JP2013027161A - Electric vehicle charging system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric vehicle charging system integrated with a vending machine capable of being installed by replacing an existing vending machine without requiring a new installation place or a large scale power supply construction work therefore.SOLUTION: Power distribution means 2 distributes the power to a vending machine 4 and an electric vehicle charger 5 using a temperature change estimation table 23 so that, even when the power supply for the vending machine 4 is reduced, the chamber temperature of the vending machine does not exceed a predetermined range and the power required for charging an electric vehicle is supplied in a predetermined time. A power receiver 1, the capacity of which is smaller than a maximum total power required for the vending machine 4 and the electric vehicle charger 5, drives two functions of the vending machine 4 and the electric vehicle charger 5.

Description

  The present invention relates to an electric vehicle charging system that adaptively distributes power to a vending machine and an electric vehicle charger and operates them.

  Due to growing ecology and energy conservation, plug-in hybrid electric vehicles (PHEV or PHV) that can be charged from an external power source to an in-vehicle battery due to an increase in energy saving It is getting a lot of attention. In addition, the market has been activated. However, nationwide installation of electric vehicle chargers is indispensable for full-scale popularization of electric vehicles.

  When installing an electric vehicle charger, there are several problems that hinder its widespread use, such as the problem of securing the installation location, in addition to the high cost of the main body.

  In order to solve this problem, the electric vehicle charger is not installed alone, but is configured to be combined with other devices, so that various methods for promoting the spread (for example, Patent Documents 1 to 3) Technology) has been proposed. Moreover, the technique relevant to this invention is disclosed by patent document 4. FIG.

JP 2006-293803 A JP 2010-178420 A JP-A-10-28303 JP 2010-127031 A

  FIG. 13 is a configuration diagram illustrating a conventional electric vehicle charger disclosed in Patent Document 1. In FIG. In this system, a conventional vending machine 1001 is provided with a charging device 1002 that receives power from a power supply unit and is electrically connected to an electric vehicle 1003 via a charging cable 1004 for charging. With this configuration, the charging fee can be settled using the settlement function of the vending machine. Furthermore, by replacing many vending machines already installed throughout the country and using them as charging devices for electric vehicles, electric vehicle chargers can be installed at low cost and infrastructure development can be promoted.

  However, by simply combining an electric vehicle charger and a vending machine (hereinafter abbreviated as a vending machine), even if it is assumed that the electric capacity of the electric vehicle charger is equivalent to that of the vending machine, the vending machine alone Compared with, double the power capacity is required after merging. Therefore, there is a problem that the replacement work from the vending machine requires a power supply enhancement work.

  In other words, in a configuration in which an electric vehicle charger and a vending machine are simply integrated, the vending machine and the electric vehicle charger can be replaced with a normal vending machine without increasing the power capacity. It will be very difficult to satisfy both functions.

  As a similar technique, a technique disclosed in Patent Document 2 is also known. FIG. 14 is a block diagram illustrating a conventional electric vehicle charger disclosed in Patent Document 2. In FIG. In this technology, a charge control unit that performs charging by electrically connecting to a delivery box 1006 used to collect and deliver parcels or mail in an apartment house to an electric vehicle 1009 via a charge plug 1017 and a chargeable sector 1016. 1012 is provided. The delivery box 1006 is provided with a plurality of article storage boxes 1005 that are opened and closed by electric locks 1007 and 1008, and the charging control unit 1012 is provided with a control circuit 1011 for controlling the power supply circuit 1010. Then, a delivery box control unit 1015 that controls opening and closing of the electric lock of the delivery box 1006 controls opening and closing of the electric locks 1007 and 1008 of the delivery box 1006. Further, the home delivery box control unit 1015 controls the charging service of the electric vehicle 1009 via the charging control unit 1012 including the control circuit 1011 and the power supply circuit 1010.

  Since the number of apartment houses such as condominiums where delivery boxes are installed has increased in recent years, facilities to be introduced for identifying and charging each resident by sharing the delivery box control system and the electric vehicle charging control system Will be additional. As a result, cost reduction is expected.

  However, in the technique of Patent Document 2, the electric vehicle charger and other equipment (delivery box) are combined, but sharing of the power supply of the two equipment is not considered. In other words, since a large amount of power capacity is required at the time of installation compared to a conventional delivery box, there is a problem that a power supply reinforcement work is required at the time of replacement. This is the same as in the case of Patent Document 1.

  Furthermore, as a similar technique, a technique disclosed in Patent Document 3 is also known. FIG. 15 is an equipment layout plan view showing an embodiment of the electric vehicle charger disclosed in Patent Document 3. In this technique, a power feeding device 1019 and a parking meter 1020 are integrally laid in a parking lot space (one section) 1018 of a parking lot. Then, the vehicle is released at the completion of the billing by the raising and lowering operation of the tire stopper 1021 of the car as in the normal coin-type parking. The electric vehicle can be charged during parking time by the configuration in which the power feeding device 1019 and the parking meter 1020 are provided.

  In the technique of Patent Document 3, the electric vehicle charger and other equipment (parking meter) are combined, but sharing of the power supply of the two equipment is not considered. Therefore, there is a problem that a power supply enhancement work is required when replacing a normal parking meter. This is the same as the techniques of Patent Documents 1 and 2.

  Further, Patent Document 4 discloses a technique for distributing power by a computer from the viewpoint of effectively using limited power. FIG. 16 is a configuration diagram showing an overall configuration of a computer-based power distribution system disclosed in Patent Document 4. As shown in FIG.

  In FIG. 16, 1023-1 to 1023-n are servers, and power allocation priority is assigned to each device in advance. The power supply units # 1 (1024-1) to #m (1024-m) supply power consumed by the entire system (particularly, power consumed by the servers # 1 (1023-1) to #n (1023-n)). To do. Furthermore, when the power demand of a server with a high priority given in advance increases further, the power management manager 1022 forcibly reduces the power used in order from the server with the lowest priority of power distribution. Specifically, the power management manager 1022 outputs a signal (forced power consumption reduction command signal 1026) to reduce the function of the server with the lower priority and suppress the power consumption.

  In the technology of Patent Document 4, a power supply unit that already covers the total power consumed by the entire system having a plurality of devices (the number of servers) is already provided, so that a total power capacity proportional to the number of devices can be supplied. It has become. Based on such a premise configuration, it can withstand urgent high loads.

  Moreover, in the system of patent document 4, electric power is allocated based on the priority order for every apparatus allocated in advance, and it is easy to operate in a system such as a server where priority can be easily assigned with the same function. However, in a completely different combination of systems such as an electric vehicle charger and a vending machine, it is difficult to operate power distribution with simple priority. Also, power is forcibly allocated to each device, and it is unclear how the device deprived of power can ensure operation and performance. That is, when such a system is applied to a configuration in which both an electric vehicle charger and a vending machine are compatible, it is difficult to satisfy both functions and performance with a power capacity smaller than the combined power capacity of both.

  The present invention has been made in view of the above circumstances. An electric vehicle can be replaced by replacing an existing vending machine without requiring a new installation site exclusively for an electric vehicle charger or a large power supply expansion work. An object of the present invention is to provide a charging system for an electric vehicle that makes it possible to easily install a charger.

  A charging system for an electric vehicle according to the present invention includes a power receiving unit capable of inputting a predetermined amount of power, and a power distribution unit that adaptively distributes the power input to the power receiving unit to a vending machine and an electric vehicle charger. The structure which comprises is taken.

  According to the present invention, it is possible to easily install an electric vehicle charger by replacing an existing vending machine or the like without requiring a new installation site or a large power supply expansion work exclusively for the electric vehicle charger. .

1 is a block diagram of a charging system for an electric vehicle according to a first embodiment of the present invention. Functional explanatory drawing explaining the function of the temperature change prediction table of the charging system of the electric vehicle which concerns on the 1st Embodiment of this invention The time chart explaining the operation example of the electric power distribution means of the charging system of the electric vehicle which concerns on the 1st Embodiment of this invention The flowchart explaining the operation example of the electric power distribution means of the charging system of the electric vehicle which concerns on the 1st Embodiment of this invention. Flowchart for explaining the details of the condition reading process in step S2 of FIG. 4A The flowchart explaining the detail of the temperature change prediction process of step S3 of FIG. 4A. Explanatory drawing explaining the user interface of the charging system of the electric vehicle which concerns on the 1st Embodiment of this invention. A time chart for explaining an operation example of the power distribution means of the charging system for an electric vehicle according to the second embodiment of the present invention. The flowchart explaining the operation example of the electric power distribution means of the charging system of the electric vehicle which concerns on the 2nd Embodiment of this invention. Flowchart for explaining details of the detailed assignment process in step S23 of FIG. 7A Operation explanatory drawing explaining the power supply resource rough allocation operation | movement of the electric power distribution means of the charging system of the electric vehicle which concerns on the 2nd Embodiment of this invention. A time chart for explaining an operation example of the power distribution means of the charging system for an electric vehicle according to the third embodiment of the present invention. The 1st part of the flowchart explaining the operation example of the electric power distribution means of the charging system of the electric vehicle which concerns on the 3rd Embodiment of this invention The 2nd part of the flowchart explaining the operation example of the electric power distribution means of the charging system of the electric vehicle which concerns on the 3rd Embodiment of this invention FIG. 5 is a time chart for explaining an operation example of the charge reservation storage means of the electric vehicle charging system according to the fourth embodiment of the present invention. Explanatory drawing explaining the user interface of the charging system of the electric vehicle which concerns on the 4th Embodiment of this invention. Configuration diagram for explaining a conventionally proposed electric vehicle charger of the first example Configuration diagram for explaining a second example electric vehicle charger proposed in the past Plan view for explaining the equipment layout of the electric vehicle charger of the third example conventionally proposed Configuration diagram showing the overall configuration of a conventionally proposed power distribution system

  An electric vehicle charging system according to a preferred embodiment of the present invention includes a power receiving unit capable of inputting power of a predetermined capacity, and the power input to the power receiving unit is adapted to a vending machine and an electric vehicle charger. Power distribution means for allocating to each other. With this configuration, the functions of both the vending machine and the electric vehicle charger can be driven using a single power receiving unit, so that the apparatus can be downsized.

  Further, in the electric vehicle charging system according to a preferred embodiment of the present invention, the power receiving unit inputs less power than the sum of the maximum power of the vending machine and the maximum power of the electric vehicle charger. The configuration. With this configuration, it is possible to suppress the total power consumption as compared with a case where a new electric vehicle charger is additionally installed in another system.

  The electric vehicle charging system according to a preferred embodiment of the present invention further includes the vending machine and the electric vehicle charger, and the vending machine, the electric vehicle charger, and the power distribution unit. Is provided in an integrated housing. With this configuration, the apparatus can be reduced in size, so that it is possible to install an electric vehicle charger by replacing an existing vending machine, including the bottom area and power supply capacity at the time of installation.

  The electric vehicle charging system according to a preferred embodiment of the present invention further includes an internal sensor for measuring an internal temperature of the vending machine and a temperature at which data for predicting an internal temperature change is stored. The power distribution means distributes power so that the internal temperature does not deviate from a predetermined temperature range based on the measured value of the internal sensor and the data of the temperature change prediction table. The configuration. With this configuration, the combined operation with the electric vehicle charger can be performed without impairing the original heating / cooling function of the vending machine.

  Further, in the electric vehicle charging system according to a preferred embodiment of the present invention, the electric power distribution means further includes an electric power so that charging of the electric vehicle is completed according to a desired end time set by a user of the electric vehicle. It was set as the structure which distributes. With this configuration, it is possible to distribute the power amounts of the vending machine and the electric vehicle charger so that the power per unit time does not exceed the input power at the power receiving device.

  In the electric vehicle charging system according to a preferred embodiment of the present invention, the power distribution unit further distributes the electric power in accordance with the set charging reservation start time and / or charging reservation end time of the electric vehicle. It was set as the structure to do. With this configuration, when it is predicted that the capacity decline of the vending machine will fall below the specified value due to the use of power in the reserved electric vehicle charger, the hot and cold function of the vending machine will be strengthened in advance during idle time Therefore, the power usage peak can be smoothed over time.

  Further, in the electric vehicle charging system according to a preferred embodiment of the present invention, the power distribution unit is further configured to cool or overheat the vending machine before the start time based on the start time of the charge reservation. The power is distributed as described above. With this configuration, even if the temperature and cooling function of the vending machine is lowered by charging the electric vehicle, the temperature inside the vending machine can be kept optimal.

  The electric vehicle charging system according to a preferred embodiment of the present invention further includes a start command storage unit that stores a command procedure for starting charging of the electric vehicle by a user, and the power distribution unit includes the charging start unit. If it is not a condition to transfer power distribution from the vending machine to the electric vehicle charger immediately after the instruction procedure, the electric vehicle charger is based on the instruction procedure stored in the start instruction storage means. After the condition that the power distribution can be transferred, the electric vehicle charger is configured to distribute the power so that the charging operation to the electric vehicle is automatically started by the electric vehicle charger. With this configuration, the peak of the amount of power desired by the vending machine and the electric vehicle charger overlaps, and when the user desires to start charging the electric vehicle, even if the power of the vending machine cannot be distributed immediately, The charging operation with the electric vehicle charger can be automatically started as soon as preparation for power distribution is completed without waiting and without performing the procedure for starting charging again.

  Subsequently, the electric vehicle charging system according to the embodiment of the present invention will be described in detail.

[First Embodiment]
In the first embodiment, an example of performing the simplest power distribution operation will be described. That is, even when electric power is distributed only to the electric vehicle charger 5 during charging of the electric vehicle (abbreviated as EV in the figure), the internal temperature of the vending machine (hereinafter also abbreviated as vending machine) 4 side is predetermined. It is an example that is within the range of. First, the configuration will be described.

  FIG. 1 is a block diagram showing a configuration of a charging system for an electric vehicle according to a first embodiment of the present invention.

  In the electric vehicle charging system of this embodiment, two function blocks of a vending machine 4 and an electric vehicle charger 5 (hereinafter also abbreviated as an EV charger) are provided in an integrated casing 100. The vending machine 4 has a rated power consumption substantially equal to (or more than) the electric vehicle charger 5. In this way, as a vending machine with a rated power consumption almost equivalent to that of an electric vehicle charger that performs normal charging, products such as beverages and ingredients are heated or cooled to keep them warm or cold. There are vending machines.

  The charging system for an electric vehicle according to this embodiment includes a power receiving device 1, a power distribution unit 2, a vending machine 4, an electric vehicle charger 5, and the like. The vending machine 4 is provided with a product storage room 8, a product temperature / cooling means 7, a user interface means 9, an inside sensor 13, an outside air temperature sensor 14, a communication means 15, a temperature change prediction table 23, a current sensor 18, and the like. It has been. The electric vehicle charger 5 is provided with a charging outlet 20, a charging control means 22, a charging reservation storage means 3, a current sensor 19, and the like.

  The power receiving device 1 is capable of inputting a predetermined capacity of electric power, and receives electric power from the commercial power supply 6 and converts it into a voltage having a predetermined magnitude and mode (AC or DC of various frequencies). As the commercial power source 6, AC 100V, AC 200V, or the like is applied. A single-phase or three-phase commercial power supply can be applied. The power receiving device 1 may include a transformer for converting a voltage, and more preferably includes a safety device such as a fuse, a breaker, an overcurrent protection device, and a leakage breaker. In general, a power receiving device has a power capacity that represents the amount of power that can be handled.

  The power receiving device 1 in the electric vehicle charging system according to the first embodiment of the present invention has a power capacity that is less than a combined power capacity of a vending machine 4 and an electric car charger 5 described later. Consists of. More preferably, as described later, it is desirable that the power supply capacity is the same (or equivalent) as that of a general vending machine and / or a general electric vehicle charger. In general, the power capacity of current beverage vending machines is approximately 1.5 kW, but the required power capacity of a normal charger for electric vehicles is currently about 1.5 kW, which is almost the same. equal. In this case, if the power receiving apparatus 1 is configured with a power capacity of 1.5 kW instead of the combined power capacity of both, it is not necessary to perform work for increasing the capacity with respect to the external electric wiring. The system can be introduced without changing the contract.

  The power distribution unit 2 switches the power received by the power receiving device 1 to the vending machine 4 and the electric vehicle charger 5 and supplies or distributes the power distributed at a certain rate, and controls the power distributor. And an arithmetic unit. As the power distributor, a switch, a rectifier circuit that converts power from alternating current to direct current, an inverter circuit that converts power from direct current to alternating current, and the like are used in combination. In particular, a configuration using an inverter circuit capable of efficiently switching between voltage and distribution is more desirable. As a method for controlling the output voltage of the inverter circuit, pulse width control by phase shift, sine wave PWM (Pulse Width Modulation) control, hysteresis control, low-order harmonic (specific frequency) elimination (removal) method PWM control, harmonic Component control or the like is used. In particular, the PWM method is a method of generating an on / off signal by comparing the magnitude of a carrier wave and a command signal, and is more preferable because an output close to a sine wave can be obtained by changing the duty ratio for each time. The inverter circuit is particularly preferably configured as a VVVF (Variable Voltage Variable Frequency) circuit using a variable voltage variable frequency. As the switch, a power MOSFET or IGBT as a so-called power device is used. As the arithmetic unit for control, an electronic circuit, a relay circuit, or the like is used, and an electronic circuit that is particularly small and can be easily configured is preferable. As the electronic circuit, an arithmetic component that performs arithmetic processing of digital information such as a microprocessor or a digital signal processor, a comparator using analog components such as a comparator, or an arithmetic circuit or computer including them is used.

  The charge reservation storage unit 3 stores the charge reservation information input by the user information input from the user interface unit 9 or the information transmission from the communication unit 15. Then, the stored reservation information is transmitted to the power distribution means 2 as necessary. The charging reservation storage unit 3 includes an arithmetic device that transmits and controls information, and a memory in which recorded information is written or read by the arithmetic device. As the arithmetic device, like the arithmetic device of the power distribution means 2, an electronic circuit, a relay circuit or the like is used, and an electronic circuit that is particularly small and easily configured is preferable. As the electronic circuit, an arithmetic component that performs arithmetic processing of digital information such as a microprocessor or a digital signal processor, a comparator using analog components such as a comparator, or an arithmetic circuit or computer including them is used. As the memory, a read-only recording medium or a rewritable recording / reading medium can be used. For example, a semiconductor memory, a hard disk drive, a magneto-optical disk drive, a magnetic tape drive, or the like can be used. In particular, a semiconductor memory is preferable because it can be read at high speed and is small. Further, the memory may be configured to be detachable like a card type or a removable medium. In addition, it is desirable to incorporate the function into the IC or LSI together with other means, and in that case, it is desirable to be configured by a register, an internal RAM, or the like.

  The vending machine 4 is a device that automatically pays a price and delivers a desired product or changes a change automatically. Here, vending machines 4 that require particularly heating, cooling, and freezing of products such as cans, plastic bottles, bottles and cups, and beverages and foods, frozen foods, ice creams, etc., which have particularly high power consumption, are used here. Has been. The power supply voltage and the maximum power consumption (power capacity) of the vending machine 4 are equivalent to the power supply voltage and the maximum power consumption (power capacity) of the electric vehicle charger 5. In general, the power capacity of current beverage vending machines is approximately 1.5 kW, and the required power capacity of ordinary chargers for electric vehicles is currently approximately 1.5 kW. .

  The electric vehicle charger 5 is a charger for charging the electric vehicle 21. The commercial power source 6 used in the vending machine 4 and the electric vehicle charger 5 is preferably an AC power source which is a general household power source, and is mainly an AC power source (single-phase 100 volts or single-phase 200 volts). As the electric vehicle charger 5, there is a type called a power outlet type (without a cable) Mode 1, and a type called a Mode 3 with a connector cable for charging that can use a connection confirmation function between the electric vehicle charger 5 and the electric vehicle 21. Can be used. In particular, it is particularly preferable that the power supply voltage is the same as that of the vending machine 4 and the power capacity is equal to the power capacity of the vending machine 4 as described above.

  The product warming / cooling means 7 is a cooler or a heater that warms or cools the product in the product storage room 8 in which products such as cans and plastic bottles are stored. It comprises a heat exchanger 7a, an external heat exchanger 7b provided outside the storage, and a compressor 7c. That is, it is configured as a circulation circuit of a medium for performing cooling or heating. For example, in the case of the cooling operation, a gaseous refrigerant is compressed by the compressor 7c, cooled by the external heat exchanger 7b to generate a liquid having a high pressure, and the pressure is reduced by the expansion valve, and the internal heat exchanger In 7a, a thermal cycle is formed in which vaporization is performed at a low temperature and heat is taken away by the heat of vaporization. In the case of a heating operation, the direction of heat transfer is reversed. The commodity warming / cooling means 7 may be constituted by a so-called heat pump type heat exchange system. In addition, it is more desirable that the product storage room 8 has a heat insulating structure around the product storage room 8 in order to maintain the inside temperature determined without being influenced by the outside air temperature as much as possible.

  The user interface means 9 is information input / output means for the user to operate and select and to provide necessary information to the user. The user interface unit 9 includes a billing / settlement unit 10, a voice input / output unit 11, and an information input / output unit 12. As the billing / settlement means 10, for example, a coin receiving means 10a or an IC card reader / writer 10b is applied.

  The voice input / output means 11 can be configured to convert voice and electrical signals. For example, a microphone or a speaker can be used. A microphone (hereinafter abbreviated as a microphone) is used for the purpose of converting a voice into an electric signal and collecting a user's voice and sounds of the surrounding environment. A voice recognition function may be connected to the voice input / output unit 11 so as to recognize a user's voice or language and perform a prescribed operation (for example, “charge start”, “settlement”, etc.). As the microphone, a moving coil type, a ribbon type, a capacitor type, an electret capacitor type, a piezoelectric (crystal) type, a laser type, or the like can be used. The speaker also changes the electrical signal into vibration and generates sound. This speaker is used for the purpose of guiding the operation to the user or returning the response of the operation result by voice. When replying, it may be configured to play a pre-stored voice pattern, or by connecting a voice synthesis function so that words are combined and played back in a predetermined context. Also good. For example, voice guides such as “Completely accepting charging” and “The electric vehicle charger cannot be used at this time” are replied to the user so that they can be heard. As this speaker, a dynamic type, a capacitor type, a ribbon type, a discharge type, a magnetic type, a piezoelectric type, or the like can be used.

  The information input / output unit 12 includes a display unit 12a and a selection / setting unit 12b. The display means 12a is a display that displays various character strings and figures so that they can be visually recognized. As the display means 12a, liquid crystal, plasma, organic EL, FED (Field Emission Display), electronic paper, touch panel display, dot matrix fluorescent display tube, LED panel, and the like can be used, and a thin panel module is particularly desirable. In particular, liquid crystal, organic EL, electronic paper and the like are desirable. In addition, a touch panel display is most desirable because it can be used as the selection / setting unit 12b. The selection / setting unit 12b is an information input function for selecting a product or function desired by the user or performing various settings related to the electric vehicle charger. Mainly, a contact button or a touch panel can be used. As described above, it is most preferable to use a touch panel because the display unit 12a and the selection / setting unit 12b can be integrated. As the touch panel, for example, an electrostatic type, a resistance film type, a pressure sensitive type, a panel using infrared rays, a laser, or the like can be used.

  The internal sensor 13 measures the internal temperature of the product storage room 8 in the vending machine 4. Thermocouple that measures temperature using thermoelectromotive force generated according to temperature difference between two metals with different properties, or platinum resistance thermometer or semiconductor that uses electrical resistance proportional to temperature A thermistor that utilizes the temperature characteristics of The thermistor is more suitable because of its small size and good sensitivity. The temperature measurement result by the in-compartment sensor 13 is transmitted to the power distribution unit 2 and used for judgment of switching or distribution of power by the power distribution unit 2.

  The outside air temperature sensor 14 measures the internal temperature of the product storage room 8 in the vending machine 4. As the outside air temperature sensor 14, a sensor similar to the inside sensor 13 can be used, and a thermistor is more preferable. The temperature measurement result by the outside air temperature sensor 14 is transmitted to the power distribution unit 2 and used for judgment of switching or distribution of power by the power distribution unit 2 in consideration of the outside air temperature.

  The communication means 15 performs data communication via a wired or wireless external communication line 16. The communication means 15 exchanges various setting information such as reservation information related to the electric vehicle charger with a server or a communication terminal that manages the reservation information. Furthermore, information on vending machine sales and product inventory is exchanged with a point-of-sale information management system (Point of sale system: so-called POS system). As the external communication line 16, a public line network or a dedicated line network can be used. However, it is preferable to use a public line network because of charges and ease of handling. The external communication line 16 may be configured by wire or wireless, but is preferably a wireless network from the viewpoint of ease of installation work. Wireless networks such as local area wireless standards such as wireless LAN and Bluetooth and public line standards such as PHS, PDC, W-CDMA, GSM, and LTE (Long Term Evolution) can be used. is there. It is also preferable to use a wireless network based on the wireless LAN standard in that it can be easily used in a constant connection. As the wireless LAN standard, standardized standards such as IEEE802.11a, IEEE802.11b, IEEE802.11g, and original standards can be used. If a LAN wiring is laid in the vicinity and the wired network is easily used, a wired LAN connection is more preferable. The wired line may be a telephone line using dial-up.

  The timer 17 measures the current time and counts a predetermined time. As the timer, an electronic circuit clock called a so-called real-time clock (RTC) can be used. It is desirable to keep the current time even when the main power of the device is turned off. Therefore, it is desirable that the driving power is backed up by a button type battery or an electric double layer capacitor.

  The current sensor 18 measures the power supply current of the system, that is, the total current consumption of the vending machine 4 and the electric vehicle charger 5. Then, current value information is transmitted to the power distribution means 2 so that the current of the entire system does not exceed a predetermined power supply capacity. As the current sensor 18, a Hall current sensor that can detect a current in a non-contact manner using a Hall element that is a magnetoelectric conversion element, or a current sensor that uses a current transformer (CT) that can measure an AC current in a clamped manner is used. .

  The current sensor 19 measures a charging current value when charging the electric vehicle 21 via the charging outlet 20. As the current sensor 19, a hall current sensor that can detect a current in a non-contact manner using a Hall element that is a magnetoelectric conversion element as in the current sensor 18, and a current transformer (CT) that can measure an alternating current in a clamped manner. The current sensor used is used. The current sensor 19 is used for monitoring the charging current of the electric vehicle 21. Further, the current sensor 19 may be configured to be used for realizing a function called Mode 3 having a function of confirming the connection between the electric vehicle charger 5 and the electric vehicle 21 in cooperation with the power distribution unit 2. .

  The charging outlet 20 provides a physical and electrical interface for connecting the electric vehicle 21 and the electric vehicle charger 5 for charging. As described above, a type called Mode 3 with a connector cable for charging that can use a connection confirmation function between the electric vehicle charger 5 and the electric vehicle 21 can be used in addition to a type called outlet 1 (without cable) Mode 1. Also, other shapes of charging outlets may be used as necessary.

  The electric vehicle 21 is a vehicle that is equipped with a battery, travels using electricity as an energy source, and using an electric motor as a power source. As the electric vehicle 21, a battery electric vehicle, a metal-air battery vehicle, a hydrogen fuel cell vehicle, an alcohol fuel cell vehicle, or the like can be used. Further, a so-called hybrid vehicle may be used in which the internal combustion engine and the battery are used in combination, and the vehicle can be partially driven only by the battery.

  The charging control unit 22 performs control to supply the electric power distributed to the electric vehicle charger 5 by the electric power distribution unit 2 to the electric vehicle 21 based on a result of communication with the electric vehicle and user control. As the charging control means 22, a switch such as a relay that can electrically open and close a contact is used. Further, similarly to the power distribution means 2, it may be configured by a circuit using an inverter.

  The temperature change prediction table 23 is a data group used to predict changes in the internal temperature of the product storage room 8 in the vending machine 4. The arithmetic unit of the power distribution means 2 refers to the data group of the temperature change prediction table 23, the outputs of the in-compartment sensor 13 and the outside air temperature sensor 14, and the information on the ratio of the power supply to the vending machine 4. The subsequent internal temperature can be predicted. The temperature change prediction table 23 may be a data table in which predetermined values are stored. Or, by collecting data based on actual system usage, expand the population of data that can be used for temperature change prediction, and perform sequential correction to obtain a data group adapted to the actual usage environment based on this population of data It is more desirable that the method be taken. The data group of the temperature change prediction table 23 is preferably stored in a memory and can be read out when necessary, and can be recorded in a read-only recording medium or a rewritable recording medium. As a read-only recording medium or a rewritable recording medium, for example, a semiconductor memory such as a flash memory, a hard disk drive, a magneto-optical disk drive, a magnetic tape drive, or the like can be used. In particular, a semiconductor memory is preferable because it is superior in environmental resistance for use in an outdoor installation device and can be read at high speed and is small. Further, it may be configured to be detachable like a card type or a removable medium for updating or maintenance of the stored data group. In addition, it is desirable that the function as the recording medium is mounted inside the IC or LSI together with other means, and in that case, it is desirable to be configured by a register, an internal RAM, or the like.

  FIG. 2 is a functional explanatory diagram illustrating a temperature change prediction table of the charging system for the electric vehicle according to the first embodiment of the present invention. As shown in this figure, the temperature change prediction table 23 has basic data representing how the internal temperature changes depending on the value of a parameter that affects the internal temperature change of the product storage room 8. . The parameters that influence the temperature change in the product storage room 8 include time, the power supply ratio to the vending machine (heating / cooling function), the outside temperature, and the like. In addition, as the above parameters, the initial internal temperature, time, season, power supply plan such as peak cut or power saving / planned power failure, power contract amount, inverter efficiency, frequency of use, etc. may be applied. In order to reduce the amount of data to be stored and simplify the calculation, the parameters should be stored only at regular intervals or at main points. And it is desirable that the information on the value having no data can be estimated and calculated based on numerical interpolation or linear / nonlinear change prediction.

  For example, in the data table (a) of FIG. 2, the ratio of power supply to the temperature cooling function of the vending machine is 0% (off), and the ambient temperature is 10 ° C., 20 ° C., and 30 ° C. Data indicating the temperature change of the product storage room is stored. And the temperature change graph (dashed line) when the outside air temperature is 32 ° C. for which there is no data is the temperature when the outside air temperature is 32 ° C. by extracting only necessary information from the graph when the outside air temperature is 10 ° C., 20 ° C., and 30 ° C. It is possible to infer changes. Further, the data table (b) of FIG. 2 represents the equivalent characteristics under the condition that the power supply ratio to the heating / cooling function of the vending machine is 10%. The same characteristic under the condition that the power supply ratio to the thermal cooling function of the vending machine without data is 15% is the data table (a) in which the power supply ratio to the thermal cooling function of the vending machine is 0%, Necessary information can be extracted and estimated from data in the data table (b) with a power supply ratio of 10%,..., A data table (x) with a power supply ratio of 100%.

  The integrated housing 100 is a case that houses the components of the vending machine 4 and the electric vehicle charger 5, and is generally formed of a box made of a steel plate. The case of the vending machine 4 and the case of the electric vehicle charger 5 are configured separately, and may be connected to each other or may be configured to install a new case inside each case. Good. Desirably, each of the functional configurations of the vending machine 4 and the electric vehicle charger 5 is housed in one integrated housing 100.

  Of the components of the electric vehicle charging system according to the embodiment, those that can be diverted and / or commonly used are realized by diverting and / or commonly using the components already provided in the vending machine. This is very preferable. For example, the vending machine already has a standard configuration that includes a large housing that is strong and waterproof, and a power receiving device that has the same power capacity as an ordinary electric vehicle charger as described above. It is done. In addition, an approval function such as a card reader (IC method, magnetic method, etc.) or cash receipt, a user interface function such as a touch panel or button, an LED or a liquid crystal display, a server communication function for Pos information, and the like can be given. Further, as each component of the user interface means 9, a push button for selecting a product, a display for displaying a product provision status such as sold out or being prepared, a liquid crystal panel for displaying various interactive information, and voice There are speakers that guide sales of beverages. Such a component already provided in the vending machine may be configured to be compatible with the operation of charging the electric vehicle. For example, a push button for selecting the charging operation of the electric vehicle, a display for displaying whether or not the electric vehicle charger can be used, and a liquid crystal panel or speaker for displaying an announcement to the user of the electric vehicle charger may be realized. Such a configuration is very desirable because the user can perform a procedure for charging by a conventional operation and can reduce changes from a general vending machine.

  FIG. 5 is an explanatory view for explaining user interface means of the charging system for an electric vehicle according to the first embodiment of the present invention, and shows a part of the front panel of the integrated casing 100. In this example, an example of an interface that realizes the function of the electric vehicle charger by utilizing the function already provided in the vending machine is shown. On the front panel, there is an area 32 for selling electricity as an electric vehicle charger 5 on a product display shelf 31 in which samples of products sold in vending machines such as plastic bottle drinks are lined up. Further, the front panel is provided with a configuration in which a desired charge amount of the electric vehicle can be selected by a product selection push button (also a display device) 33. FIG. 5 shows a state where 100% of the electric power is distributed to the vending machine 4 and the function of the electric vehicle charger 5 is temporarily unavailable. The product selection push button (cum display) 33 of the electric vehicle is displayed as “in preparation” and does not operate even when pressed. For the merchandise display shelf 31 and the merchandise selection push button (cum display) 33, facilities provided in vending machines that sell beverages and the like are used as they are. In addition, the bill insertion slot 38, the IC card reader 39, the coin insertion slot 40, the refund lever 41, the speaker 35, the microphone 36, and the information input as the voice input / output means 11 of the user interface means 9 as the billing / settlement means 10. The product selection push button (cum display) 33 as the output means 12, the liquid crystal panel 34, the camera 37 for authenticating the user and monitoring the suspicious person, etc. are also diverted from the functions already provided in the vending machine. It has been realized.

  The operation of the electric vehicle charging system according to the first embodiment of the present invention having the above-described configuration will be described with reference to FIGS. FIG. 3 is a time chart for explaining an operation example of the power distribution means of the charging system for the electric vehicle according to the first embodiment of the present invention. FIGS. 4A and 4B are flowcharts for explaining an operation example of the power distribution unit of the charging system for the electric vehicle according to the first embodiment of the present invention. In FIG. 3, the upper graph in FIG. 3A shows the change in the temperature of the product storage room with time (time), and the middle graph in FIG. 3B shows the heating / cooling function of the vending machine 4 according to the command from the power distribution means 2. The time change of the vending machine power distribution (%) distributed to the electric vehicle charger power distribution (%) distributed to the electric vehicle charger 5 according to the command of the power distribution means 2 is shown in the lower graph of FIG. Is shown. The horizontal axes of the graphs of FIGS. 3A to 3C are the same time axis.

  The description will be made on the assumption that a cold beverage is stored in the commodity storage room 8 of the vending machine 4. The cold storage temperature of the cold beverage in the vending machine is around + 4 ° C. In the case of operation as a normal vending machine without the use of the electric vehicle charger 5, the operation amount of the product heating / cooling means 7 is adjusted based on the temperature measurement result of the in-compartment sensor 13, and is the standard temperature. Maintains around +4 degrees Celsius.

  The power distribution means 2 has a setting value when the electric vehicle charger 5 is used as a standard value of + 4 ° C. plus or minus 3 ° C., that is, a range of + 1 ° C. to + 7 ° C. is a vending machine. It is set within the allowable range of the cold temperature of the cold beverage (the temperature of the cold storage room of the vending machine). Further, in order not to exceed the upper limit of the allowable range, a temperature at which a certain margin value (margin) is seen from the upper limit of the allowable range of + 7 ° C. is set as the threshold value. In the example of FIG. 3, the threshold is set to + 6 ° C., which is 1 ° C. lower than the upper limit. In the vending machine 4, the power consumption when the product temperature cooling means 7 maintains a steady temperature is about 0.5 kW / h.

  Note that another value may be set as the temperature change threshold value during the steady operation of the vending machine 4 (when the electric vehicle charger 5 is not used). In the example of FIG. 3, the standard temperature is set to about + 0.5 ° C.

  In the example of FIG. 3, the inside temperature of 4 ° C. was maintained by the steady temperature maintenance operation (power consumption 0.5 kW / h) until about 8 o'clock in the morning. The inside temperature rises due to heating. And since the temperature change threshold value (Celsius +4.5 degreeC) in steady operation | movement was reached at about 10:00 am, the product temperature cooling means 7 has started operation | movement to the cooling side. At this time, the vending machine requires a large amount of power because of the temporary operation of the compressor and the like. Therefore, 1.5 kW / h which is the maximum power of the system total is consumed. Here, since there is no parallel operation of the electric vehicle charger 5, the power distribution means 2 gives 100% of the electric power that can be used in the system to the vending machine 4, and in the morning when the electric vehicle charger 5 is not used. The steady temperature management is performed as the vending machine 4 alone.

  In the example of FIG. 3, a procedure for an electric vehicle user to use the electric vehicle charger 5 is performed at 0:00 pm. As shown in FIG. 3, the operation of the power distribution unit 2 will be described with reference to FIGS. 4A and 4B on the assumption that the inside temperature of the commodity storage room 8 at this time is a standard value of + 4 ° C.

  FIG. 4A is a flowchart for explaining an operation example of the power distribution unit of the charging system for the electric vehicle according to the first embodiment of the present invention, FIG. 4B shows details of the condition reading process in step S2, and FIG. 4C shows step S3 in FIG. The details of the temperature change prediction process are respectively shown.

  If it is found from the information from the user interface means 9 that the user wishes to charge the electric vehicle (step S1), the power distribution means 2 reads various conditions for determination (step S2). The various conditions are, for example, the current time, charging electric energy, electric vehicle charging start / end time, internal temperature specified value, internal temperature specified value margin, current internal temperature and external temperature, etc. Information is not necessarily required. For example, if the current time and the desired amount of charging power are known, the charging end time can be estimated. In this description, it is assumed that the user desires charging with an amount of power of 6 kWh. It is assumed that the outside air temperature observed by the outside air temperature sensor 14 is 32 ° C.

  Once the various conditions have been read, the power distribution unit 2 next predicts the internal temperature change using the temperature change prediction table 23 (step S3). That is, the temperature change of the product storage chamber 8 when the cooling function of the vending machine 4 is stopped until the charging of the electric vehicle is completed is estimated using the temperature change prediction table 23. The temperature change prediction table 23 stores, for example, the following evaluation data and a data group based thereon. That is, when the cooling operation is stopped for 6 hours continuously at an outside air temperature of 32 ° C., the product temperature rises up to about + 7 ° C., and if the initial value is + 4 ° C., + 3 ° C. in 7 hours + 7 ° C. Reach ℃. From such a data group, at a temperature of 32 ° C., the temperature change in the cabinet when the cooling by the heating / cooling function of the vending machine 4 is continuously stopped (the power distribution is 0%) is approximately +0 per hour. Estimated at 5 ° C.

  The power distribution unit 2 verifies whether the internal temperature does not deviate from the specified value due to the stop of the heating / cooling function of the vending machine 4 based on the prediction result of the internal temperature change using the temperature change prediction table 23. (Step S4). For example, assuming that the cooling by the heating / cooling function of the vending machine 4 is continuously stopped and 100% electric power (1.5 kW / h) is distributed to the electric vehicle charger 5, the charge amount desired by the user (6 kWh) is obtained. Takes 4 hours. In the prediction of the internal temperature change using the information of the temperature change prediction table 23, the internal temperature after 4 hours is estimated to be + 6 ° C. and does not exceed the temperature threshold + 6 ° C. Therefore, in this case, the power distribution means 2 determines that the internal temperature does not deviate from the specified value, stops the heating / cooling function of the vending machine 4 and supplies the electric vehicle charger 5 with 100% power. The power received from the power receiving apparatus 1 is distributed (step S5). When the charging to the electric vehicle 21 is completed (step S6), the power supply to the electric vehicle charger 5 is stopped and the power supply to the vending machine 4 is resumed (step S7). Since the internal temperature of the vending machine 4 has reached the threshold value of Celsius + 6 ° C., the power distribution means 2 is set to 100 in the vending machine 4 until the internal temperature of the vending machine 4 drops to the standard value of Celsius + 4 ° C. Operates to supply% power. While the internal temperature of the vending machine 4 recovers to the standard value, the operation start of the electric vehicle charger 5 is masked (a state where it cannot start). During this time, the user is notified that the electric vehicle charger cannot be used temporarily (step S8). In addition, even if the internal temperature deviates from the specified value due to the stop of the heating / cooling function of the vending machine 4 due to the verification of the prediction result of the internal temperature change in step S4, the electric vehicle charger is temporarily provided to the user. An unusable notice is sent to the effect that it cannot be used (step S9).

  As already explained, FIG. 5 shows an example in which equipment provided in a vending machine that sells beverages is used as it is as a method of notifying the user of the unavailability. In other words, “Preparing” is displayed on the product selection push button (cum display) 33 in the item of the electric vehicle charger of the vending machine, and the operation is not accepted even when the button 33 is pressed. When the internal temperature of the vending machine 4 recovers to the standard value, the above series of power distribution operations is terminated, and the processing can be started again from step S1 in FIG. 4A.

  As described above, in the electric vehicle charging system according to the first embodiment of the present invention, the electric vehicle charger 5 and the vending machine 4 are mounted on the integrated casing 100. In addition, the power receiving apparatus 1 inputs less power (preferably only the same power as that for the vending machine 4) than the combined power for the vending machine 4 and the electric vehicle charger 5. Furthermore, by using the internal sensor 13 for measuring the internal temperature of the vending machine 4 and the temperature change prediction table 23 for predicting the internal temperature change, the internal temperature does not deviate from a predetermined temperature range. The power distribution means 2 adaptively distributes power to the vending machine and the electric vehicle charger. With such a configuration, the functions of both the vending machine 4 and the electric vehicle charger 5 can be driven by using one system of the power receiving device 1, so that the device can be downsized. . Moreover, compared with the case where an electric vehicle charger is added separately from a vending machine, the effect that total power consumption can be suppressed is acquired.

  Moreover, according to the electric vehicle charging system according to the first embodiment of the present invention, the power capacity of the power source used in the existing vending machine is not increased. That is, the effect that the power source used in the existing vending machine can be applied as it is can be obtained. And by such a power supply, both the function of the vending machine 4 and the function of the electric vehicle charger 5 can be realized. That is, the combined operation with the electric vehicle charger 5 can be performed without impairing the original heating / cooling function of the vending machine 4. In addition, it is not necessary to install a separate electric vehicle charger in addition to the existing vending machine, so that the floor area required for installing the device does not need to be significantly increased compared to a conventional vending machine alone. From the above, it becomes easy to replace the existing vending machine, and the remarkable effect that the installation and expansion of the electric vehicle charger can be promoted is obtained.

[Second Embodiment]
2nd Embodiment demonstrates the example which distributes electric power adaptively so that charge of an electric vehicle can be complete | finished by making the completion | finish desired time set by the user of the electric vehicle charger 5 into a time limit. The basic configuration is the same as the block diagram (FIG. 1) showing the configuration of the electric vehicle charging system according to the first embodiment of the present invention, and only the operation of the power distribution means 2 is different. Therefore, description of a detailed structure is abbreviate | omitted and operation | movement of the charging system of the electric vehicle which concerns on the 2nd Embodiment of this invention is demonstrated using FIGS.

  There is a recent demand for energy conservation, power demand leveling and peak cuts. Along with these, some vending machines for cans and plastic bottles have a cooling function during times of high power demand from 1 pm to 4 pm on weekdays during the three months from July to September. Some have a peak cut function that stops the operation. In this time zone, the vending machine has a request to cope with the peak cut of electric power, and of course, there is a request that the power consumption of the electric vehicle charger should be suppressed as much as possible from the gist of the peak cut. It is done.

  On the other hand, in the electric vehicle charger, particularly in the case of a charging operation by a normal charger, the more remaining power of the in-vehicle battery of the electric vehicle 21 is, the more charging time is required. Therefore, the user does not normally wait for the charging until the charging is completed, and the electric vehicle charger 5 is provided for the user to do shopping, entertainment, rest, etc. after specifying the charging end time and the charging amount. It is usual to leave the place. In this case, for the user, the charging of the electric vehicle 21 only needs to be completed by the time designated by the user or the end time taught from the system.

  In the present embodiment, even when the time restrictions related to power distribution are different between the vending machine 4 side and the electric vehicle charger 5 side as described above, the power consumption peaks overlap with each other at the same time. The power distribution means 2 performs power distribution so as not to exceed the power capacity.

  FIG. 6 is a time chart for explaining an operation example of the power distribution means of the charging system for an electric vehicle according to the second embodiment of the present invention. The contents of the vertical and horizontal axes in FIGS. 6A to 6C are the same as those in FIGS. 3A to 3C. In the example of FIG. 6, the electric vehicle charging end designated time by the user is set to 21:00, and corresponds to the peak cut of the vending machine from 13:00 to 16:00 (power supply to the heating / cooling function of the vending machine 4) 3 is mainly different from the example of FIG. In this example, the power consumption in the peak cut time zone of the vending machine 4 is minimized as a whole system (power consumption of the vending machine = 0 kW / h, power consumption of the electric vehicle charger 5 = 0.35 kW / h). h) Controlled. Furthermore, the internal temperature of the vending machine 4 is kept within the specified value, and the charging of the electric vehicle 21 with a predetermined charging amount (total charging amount 6 kWh = 1.5 kWh + 1.05 kWh + 3.45 kWh) is achieved by a predetermined time. ing.

  Details of this operation will be described with reference to FIGS. 7A and 7B. FIG. 7A is a flowchart illustrating an example of the operation of the power distribution unit of the charging system for an electric vehicle according to the second embodiment of the present invention, and FIG. 7B is a flowchart illustrating details of the detailed allocation process in step S23. In FIG. 7A, steps having the same reference numerals as those in the already-described flowchart (FIG. 4) represent the same configuration, function, and operation, and detailed description thereof is omitted. The only differences from the first embodiment are the processes of steps S21 to S24 and steps S31 to S37, which are sub-processes of step S23, and only those points will be described.

  As illustrated in FIG. 7A, the power distribution unit 2 reads the conditions in step S2, and then calculates a required power amount necessary for charging the electric vehicle (step S21). Here, the required power amount is a product (unit: kWh) of power per unit time and usage time. Next, rough allocation of power resources is performed to determine the allocation of power resources for each approximate time slot (step S22), and then detailed allocation is performed to finely adjust power allocation as necessary (step S22). Step S23). Then, it operates to distribute power based on the allocation plan determined in the detailed allocation (step S24).

  Here, first, the rough allocation operation in step S22 will be described. FIG. 8 is an operation explanatory diagram illustrating a power resource rough allocation operation of the power distribution unit of the charging system for the electric vehicle according to the second embodiment of the present invention. In the power resource rough allocation process, the power usage time zone of 24 hours a day is divided into a plurality of time zones T1 to T7, and priorities are assigned to the respective time zones T1 to T7. Here, the priority order is an order in which power should be preferentially supplied to the electric vehicle charger 5. First, the arithmetic unit of the power distribution means 2 prioritizes so that the vending machine 4 is preferentially stopped in a time zone in which the temperature change in the cabinet due to the stop of the heating / cooling function of the vending machine 4 is relatively small. . For example, in the case of a cooling function, the priority of the electric vehicle charger 5 is lowered so that the vending machine 4 is not stopped as much as possible during the daytime when the outside temperature is high, and the temperature rise is affected even if the vending machine 4 is stopped. For example, the priority for the electric vehicle charger 5 is increased in the midnight time zone when there is relatively little. The priority order may be determined in consideration of the temperature observed by the outside air temperature sensor 14, its change state, and the recent tendency of outside air temperature change, instead of simply determining the time zone. good. Furthermore, information such as temperature and weather may be acquired from a server connected through the external communication line 16 using the communication means 15, and the priority order may be determined based on this information.

  Further, the above priority determination method is a prioritization method when there is no special time limit. On the other hand, if there is a time restriction such as the peak cut of the vending machine, prioritization is performed by lowering the operation priority of the electric vehicle charger 5 and / or the vending machine 4 in the time limit. Do. The time widths of the divided time zones T1 to T7 may or may not be constant. As the division time width is smaller, finer distribution control becomes possible. However, prioritization and assignment determination become complicated, so it is desirable to divide into appropriate time widths according to the actual situation. In general, during daytime hours (morning to evening), which are frequently used and require more detailed control, the time interval is narrowed, the usage frequency is relatively low, and the demand for power demand is relatively constant. For example, it is possible to increase the time zone separation width in the late night hours (midnight to early morning).

  Next, the arithmetic unit of the power distribution means 2 allocates the charging time zone and the amount of power requested by the user from the top of the prioritized time zones T1 to T6. Here, there will be described a case where there is a charging request in FIG. 6 (charging starts at 12:00, end time designation is 21:00, charging power is 6 kWh), and time zone division and prioritization in FIG. 8 are performed. . In the time zone T1 of 1:00 to 7:00 of the first priority and the time zone T7 of 22:00 to 01:00 of the second priority, there is no time zone that matches the current request time. The distribution unit 2 does not allocate power. In the time zone T6 of 19:00 to 22:00 with the third highest priority, 2 hours of 19:00 to 21:00 coincide with the current request, and the maximum power resource that can be used during this period is 3 kWh (time 1.5 kW for 2 hours). Therefore, this allocation W1, W2 is performed. Since the current charging request is 6 kWh, supply allocation for 3 kWh is still necessary, so the algorithm continues the allocation operation. In the time zone T2 of 7:00 to 10:00, which is the fourth highest priority, there is no time zone that matches the current request time, so power allocation is not performed. In the time zone T5 of 16:00 to 19:00, which is the fifth highest priority, there is a time zone that matches the current request time, but the power is already assigned at the higher priority of 19:00 to 22:00. Is decided. Therefore, allocation is not performed in the time zone T5 from 16:00 to 19:00 in which time zones are continuous, and the priority order of this time zone is changed to the lowest order. In time zone T3 of 10:00 to 13:00 of the 6th priority of the next priority, 1 hour between 12:00 and 13:00 matches the current request time, so the maximum power per hour is A certain allocation of W3 for 1.5 kW × 1 hour = 1.5 kWh is performed. At this stage, 6 kWh, which is still the power demand, is insufficient for 1.5 kWh.

  A time zone T4 of 13; 00 to 16:00 having the seventh highest priority is a peak cut time zone of the vending machine. Here, if the power usage of the electric vehicle charger is not completely prohibited during the peak cut time zone of the vending machine, power distribution is attempted as follows. That is, as much as possible during the time zone T4 (13; 00 to 16:00) immediately before the lowest level, not the time zone T5 (16: 0 to 19:00) in which the priority is turned to the lowest level. Power distribution is attempted so that the remaining required power amount is distributed and consumed so that the peak of the amount is not concentrated. Since the remaining required electric energy is 1.5 kWh, all the allocation of the charging electric energy can be achieved by the allocations W4 to W6 allocated by 0.5 kW in 3 hours.

  With the above processing, the arithmetic unit of the power distribution means 2 makes a desired total of 6 kWh (3 kWh in the time zone T6 from 19:00 to 22:00, 1.5 kWh in the time zone T3 from 10:00 to 13:00, and In the time zone T4 from 13:00 to 16:00, rough power allocation is performed for a power amount of 0.5 kW per hour (subtotal of 1.5 kW). That is, power is roughly allocated as shown in FIG. 8 by the coarse allocation process in step S22 of FIG.

  Returning to the flowchart of FIG. If rough allocation is performed as described above, the power distribution unit 2 then performs detailed power allocation in consideration of the prediction of the internal temperature change (step S23). Thereby, the final power allocation plan is determined. Specifically, first, the internal temperature of the vending machine 4 during the operation time of the electric vehicle charger 5 in the power distribution plan by the rough allocation by the internal temperature prediction means (function of the calculation means) of the electric power distribution means 2. It is verified whether the value does not deviate from the specified value (step S32). In the power allocation plan based on rough allocation, the temperature inside the cabinet is lowered by stopping or reducing the efficiency of the heating / cooling function of the vending machine 4. As a result, if there is a time zone that deviates from the specified value, the power allocation to the vending machine 4 is increased by a certain amount during that time range (step S36), and the internal temperature is set to the specified value again in step S32. Verify that it does not come off. In this sequential iteration process, the number of power allocation changes is counted by a counter (step S34), and it is determined whether the number of changes exceeds a set value (step S35). The power distribution plan can be corrected so that the internal temperature falls within the specified value within the set number of sequential iterations, and the predicted value of the internal temperature based on the information in the temperature change prediction table 23 cannot deviate from the specified value. If so, the detailed assignment is successful, and the detailed assignment process ends (step S33).

  If the detailed allocation process is successful, the power distribution means 2 receives from the power receiving device 1 to appropriately distribute power to the heating / cooling function of the vending machine 4 and the electric vehicle charger 5 based on the determined power distribution plan. Power is distributed (step S24). The subsequent operations in steps S6 to S8 are the same as those described in FIG.

  On the other hand, in the detailed allocation process in step S23, if the power distribution plan cannot be corrected so that the internal temperature falls within the specified value within the set sequential repetition count, an error occurs (step S37). In this case, the user is notified that the electric vehicle charger 5 cannot be used under the desired conditions.

  As described above, in the electric vehicle charging system according to the second embodiment of the present invention, the power distribution unit 2 requires the amount of power required for charging the electric vehicle 21 (power and usage per unit time). Product of time). And it is comprised so that the electric power can be distributed adaptively so that charge of an electric vehicle can be complete | finished by making the completion | finish desired time set by the user into a time limit. Specifically, the power distribution unit 2 first performs rough allocation of power resources for each time period T1 to T7 (see FIG. 8), and determines the distribution of power resources for each rough time period T1 to T7. Thereafter, the power distribution is finely adjusted as necessary, and the power is distributed based on the determined allocation plan. Therefore, even when the quantitative and temporal restrictions on the power distribution are different between the vending machine 4 side and the electric vehicle charger 5 side, the power demand peaks overlap at the same time, and the power capacity of the power receiving device 1 is increased. The amount of electric power can be distributed so as not to exceed. In addition, even when the vending machine 4 side and the electric vehicle charger 5 side have different quantitative and temporal restrictions on power distribution, the power receiving device 1 (preferably automatic power supply) with one system and smaller power capacity is used. The functions of both the vending machine 4 and the electric vehicle charger 5 can be driven only by the same power receiving device as the power capacity of the vending machine alone. Therefore, it is possible to further reduce the size of the device and reduce power consumption. Further, even if the quantitative and temporal restrictions on the power distribution between the vending machine 4 and the electric vehicle charger 5 are different, it is not necessary to increase the power capacity of the power supply for the existing vending machine. As a result, problems related to floor area and power supply capacity are solved together, and installation and expansion of electric vehicle chargers becomes easy.

[Third Embodiment]
In the third embodiment, when the use of the electric vehicle charger 5 is reserved, the electric vehicle is charged so that the internal temperature does not deviate from the specified value even if the heating / cooling function of the vending machine 4 is stopped for a long time. The vending machine 4 is precooled or overheated before the reserved time of the container 5. The operation of the charging system for an electric vehicle according to the third embodiment of the present invention will be described with reference to FIGS. The basic configuration is the same as the block diagram (FIG. 1) showing the configuration of the electric vehicle charging system according to the first embodiment of the present invention, and only the operation of the power distribution means 2 is different. Description of the detailed configuration will be omitted, and description will be focused on characteristic portions related to the present embodiment.

  FIG. 9 is a time chart for explaining an operation example of the power distribution means of the charging system for an electric vehicle according to the third embodiment of the present invention. The contents of the vertical and horizontal axes in FIGS. 9A to 9C are the same as those in FIGS. 3A to 3C. In the example of FIG. 9, the electric vehicle charging reservation by the user is set from 12:00 to 20:00, and the electric energy of 12 kWh is continuously occupied by the charging of the electric vehicle. However, it is characteristic that the time zone in which this power is occupied and the amount of power are known in advance.

  The details of the operation in the case of FIG. 9 will be described with reference to the flowcharts of FIGS. 10A and 10B. 10A and 10B, the same reference numerals as those in the steps of FIGS. 4A and 7A that have already been described denote the same configurations, functions, and operations, and thus detailed description thereof will be omitted. Also, the operation is described only for the characteristic portions according to the third embodiment of the present invention (the portions surrounded by the broken lines in FIG. 10B), and other configurations, operations, and operations are the same as those in the first embodiment and the second embodiment. Since it can be described in the same manner as the embodiment, detailed description is omitted.

  In the electric vehicle charging system of this embodiment, an operation for reserving a charging operation is performed instead of an operation for starting a normal charging operation for the electric vehicle (step S101 in FIG. 10A). After that, the process of condition reading (step S2), calculation of required electric energy (step S21), rough allocation of power resources (step S22), and detailed allocation (step S23) by the internal temperature change prediction means is performed. Also, a case will be described in which power resources cannot be distributed and an error occurs.

  In this case, the power distribution unit 2 receives the current time information from the timer 17, and receives information on the charge reservation time desired by the user (input) and the desired charge power amount from the charge reservation storage unit 3. Based on these pieces of information, it is verified whether there is a predetermined time margin from the current time to the reserved charging start time (step S41). For example, it is assumed that the current time is 9:00 and the reserved charging start time of the electric vehicle is 12:00. In this case, since there is a time margin of 3 hours, the power distribution unit 2 determines that there is a time margin. And automatically sells the amount of electricity that can be pre-cooled or pre-heated within the margin from the current time to the reserved charging start time for the estimated amount of temperature change (increase or decrease) during the reserved electric vehicle charging time Temporarily assigned to the machine 4 (step S42). It is more desirable that the temperature range of pre-cooling / pre-heating does not deviate from the specified temperature range of the commodity storage chamber 8 described above even temporarily. In the case of the temporary allocation described above, as shown in FIG. 9, the power amount of 1.5 kW × 3 = 4.5 kWh can be allocated for pre-cooling or pre-heating of the vending machine 4 within 3 hours of the spare time. Is possible. Here, if the cooling capacity of the vending machine 4 is 2 kWh per 1 ° C. in the outside air temperature and the inside temperature range, for example, the inside temperature of the vending machine 4 can be lowered by about 2.3 ° C. with a power amount of 4.5 kWh. Is possible. If the internal temperature before the pre-cooling operation is around the reference value and is about 4 ° C., the internal temperature can be lowered to + 1.7 ° C.

  Subsequently, the power distribution unit 2 verifies whether the change in the internal temperature during the charging time of the electric vehicle falls within the specified value with the temporarily allocated power amount (pre-cooling preheating operation) (step S43). Here, as shown in FIG. 9, it is assumed that the power supply to the cooling / heating function of the vending machine 4 is stopped for 8 hours continuously from 12:00 to 20:00 (the power supply to the electric vehicle charger 5 is 100%). To do. Further, as information stored in the temperature change prediction table 23, the change in the internal temperature when the cooling function of the vending machine 4 is stopped under various conditions such as the outside air temperature and the internal temperature is + 0.5 ° C. per hour. Assume. If the current vending machine stops the cooling operation for 6 hours at an outdoor temperature of 32 ° C., the product temperature rises to a maximum of about + 7 ° C.

  In the case of the above assumption, an increase in the internal temperature of 4 ° C. is expected by stopping the power supply to the cooling / heating function for 8 hours. If the internal temperature just before the stop is + 4 ° C. of the reference temperature, a temperature increase of 4 ° C. will exceed the allowable temperature range threshold of 6 ° C. On the other hand, if the temperature is precooled to +1.7 degrees Celsius in advance for 3 hours, the internal temperature after 8 hours is predicted to be +5.7 degrees Celsius. Accordingly, in step S43, the evaluation is made when the internal temperature falls within the specified range.

  In this case, the power distribution means 2 temporarily stops accepting a new operation and starting the operation of the electric vehicle charger 5 (step S44), and performs the precooling / preheating operation of the vending machine 4 only for the necessary time (step S45). , S46). When the pre-cooling / pre-heating operation of the vending machine 4 is completed, the refusal to start the charging operation of the electric vehicle charger 5 is canceled (step S47), and the process waits until the charge reservation time is reached (step S48). When the reserved time is reached, the power distribution unit 2 supplies the electric power to the electric vehicle charger 5 based on the allocation plan (step S49). In addition, during the power supply in step S49, only a charging operation by a user that is assumed (reserved) is performed in advance, and after the pre-cooling / pre-heating operation, a new user interrupts and starts a new charging operation suddenly. It is desirable to make it impossible. If it is determined in step S41 that there is no margin, or if it is determined in step S43 that the temperature change does not fall within the specified value, an error occurs and the user is notified that the electric vehicle charger 5 cannot be used. (Step S50). The subsequent operations in steps S6 to S8 are the same as described above.

  As described above, the electric vehicle charging system according to this embodiment passes the product storage room of the vending machine during the spare time previously reserved when the electric vehicle charger is reserved for use. Can be cooled and overheated. And even if the temperature-cooling function of a vending machine is stopped for a long time and a bigger temperature change arises, it can prevent the internal temperature from deviating from a regulation value. Accordingly, even when the power receiving device 1 having a smaller power capacity is adopted, the vending machine 4 can be stopped for a longer time to distribute power to the electric vehicle charger 5. Even if power is distributed in this way, the function of the electric vehicle charger 5 can be satisfied without impairing the original function of the vending machine 4. Therefore, it is possible to deal with power distribution in more various use cases, and it is possible to smooth the power usage peak in terms of time.

[Fourth Embodiment]
In the fourth embodiment, even when the use of the electric vehicle charger 5 is requested during a period in which the heating / cooling function of the vending machine 4 needs to be operated exclusively in order to recover the specified internal temperature. The procedure for using the electric vehicle charger 5 by the user is not complicated.

  The basic configuration is the same as the block diagram (FIG. 1) showing the configuration of the electric vehicle charging system according to the first embodiment of the present invention, except that the charging reservation storage means 3 and the system behavior associated therewith are different. Therefore, detailed description of the same configuration and operation is omitted.

  The operation of the electric vehicle charging system according to the fourth embodiment of the present invention will be described with reference to FIGS. FIG. 11 is a time chart for explaining an operation example of the charge reservation storing means of the electric vehicle charging system according to the third embodiment of the present invention.

  In FIG. 11, it is assumed that the power distribution means 2 distributes the system power exclusively to the electric vehicle charger 5 from 12:00 to 16:00. Then, from 16:00 after the charging operation of the electric vehicle charger 5 is completed at 16:00, the power of the system is exclusively distributed to the vending machine 4 in order to recover the internal temperature of the vending machine 4. Suppose. That is, the operation of the electric vehicle charger 5 is prohibited by the power distribution means 2 during the internal temperature recovery period of the vending machine 4 (around 16:00 to 18:30).

  Here, it is assumed that the user operates the user interface means 9 during the internal temperature recovery period (from 16:00 to around 18:30) to perform a procedure for causing the electric vehicle charger 5 to perform a charging operation. For example, it is assumed that charging of 6 kWh is selected and the fee payment processing is performed using the charging / settlement means 10. Then, the charge reservation memory | storage means 3 memorize | stores the operating conditions of the electric vehicle charger 5 which the user input first. Next, the charging reservation storage means 3 reads the electric vehicle charger 5 according to the operating conditions of the electric vehicle charger 5 input by the user when the internal temperature recovery period of the vending machine 4 ends at 18:30. Issues a command to the power distribution means 2 so that the operation starts. The power distribution means 2 exchanges information with the timer 17 according to this command, and starts power distribution to the electric vehicle charger 5 at a designated time. Such a function eliminates the need for the user to wait on the spot until the electric vehicle charger 5 becomes available. That is, it is possible to go out for shopping or leisure by making only a conditional reservation and confirming the scheduled charging completion time. Since the subsequent operations of the vending machine 4 and the electric vehicle charger 5 are the same as those described so far, their details are omitted.

  FIG. 12 is an explanatory diagram illustrating a user interface of the electric vehicle charging system according to the fourth embodiment of the present invention. The basic functions and operations are the same as those shown in FIG. In the electric vehicle charging system according to the fourth embodiment, when the operation of the electric vehicle charger 5 cannot be started promptly as described above, a notification as shown in FIG. 12 is performed. That is, using the liquid crystal panel 34 and the speaker 35, the user is notified of information such as that the electric vehicle charger 5 cannot be used immediately but the reservation operation is possible, the reception of the charge reservation, and the scheduled charge end time. The With this notification, even when the use of the electric vehicle charger is temporarily prohibited, the user does not need to perform the charge start operation again after confirming the information and conditions, and the electric vehicle charger 5 The electric vehicle 21 can be charged.

  As described above, according to the electric vehicle charging system of the present invention, the following operations are performed by the charge reservation storage unit 3 that stores the charging start procedure of the user's electric vehicle. That is, in order to exclusively operate the heating / cooling function of the vending machine 4 to recover the specified internal temperature, the user can use the electric vehicle charger even during a period in which the use of the electric vehicle charger 5 is temporarily prohibited. The procedure for using the charger 5 can be performed. Then, at a time when power distribution for the electric vehicle charger 5 becomes possible, the power distribution unit 2 starts the charging operation for the electric vehicle based on the procedure stored in the charge reservation storage unit 3. Electric power is distributed. If the user of the electric vehicle charger wishes to start charging the electric vehicle during a period in which it is necessary to operate the vending machine's heating / cooling function exclusively to recover the specified internal temperature due to such an action, In addition, the procedure can be performed. That is, it is possible to automatically start the charging operation of the electric vehicle charger 5 as soon as preparation for power distribution is completed without waiting for the user to perform the operation of starting charging again. Therefore, the user can set the electric vehicle to a state where it can be charged without waiting until the time when the operation of the electric vehicle charger 5 becomes possible, and can move to other actions such as shopping.

  In the above-described embodiment, it has been described that the user directly operates the user interface unit 9 to perform a procedure for the operation of the electric vehicle charger 5. However, in the third and fourth embodiments, the electric vehicle charger 5 is connected from an information terminal such as a server computer, a personal computer, or a mobile phone connected to the charging system via the communication means 15 and the external line 16. You may comprise so that the procedure for operation | movement may be performed.

  Moreover, in all the said embodiment, the vending machine 4 and the electric vehicle charger 5 showed the example by which the function is accommodated in the same housing | casing (integrated housing | casing 100). However, the vending machine 4 and the electric vehicle charger 5 may be configured by separate casings as long as the configuration is configured to operate with the power supplied from the common power receiving device 1 and distributed by the power distribution unit 2. .

  Moreover, in all said embodiment, although the vending machine 4 illustrated and demonstrated the case where it was cooled, it is applicable similarly also when heated as what handles the food for hot. In that case, the product warming and cooling means 7 is configured in the reverse direction of the cooling and the heat moving direction. Further, the temperature change prediction table 23 is configured by a data group for predicting a drop in the internal temperature of the commodity storage room 8 in the vending machine 4. Further, in this case, the power distribution means 2 performs a control operation so that the heat retention temperature is about + 55 ° C. as a standard temperature.

  Moreover, in all said embodiment, the vending machine 4 demonstrated and demonstrated the case where it was a vending machine of drinks, such as a can and a plastic bottle. However, even in vending machines that provide various things that require cold insulation by cooling or heat insulation by heating, the present invention can be similarly applied to exhibit the same excellent effects. For example, it may be a vending machine that provides sweets, ice cream, hot snacks, oden cans, ramen cans, bread cans, frozen foods, vegetables, eggs and the like. In this case, the range of storage (or provision) temperature allowed for each food is different, the change in the internal temperature when the power distribution is changed, and the electric energy for maintaining and restoring the internal temperature to the allowable temperature. However, it is possible to cope with these differences by appropriate design changes.

  The electric vehicle charging system according to the present invention is useful for providing an electric vehicle charger by replacing an existing vending machine.

DESCRIPTION OF SYMBOLS 1 Power receiving apparatus 2 Electric power distribution means 3 Charging reservation memory means 4 Vending machine 5 Electric vehicle charger 13 In-compartment sensor 23 Temperature change prediction table 100 Integrated housing

Claims (8)

A power receiving unit capable of inputting a predetermined amount of power;
Power distribution means for adaptively distributing the power input to the power receiving unit to the vending machine and the electric vehicle charger;
An electric vehicle charging system comprising: The electric vehicle charging system according to claim 1, wherein the power receiving unit inputs electric power that is less than a total electric power of the maximum power of the vending machine and the maximum electric power of the electric vehicle charger. The vending machine;
The electric vehicle charger;
Comprising
The charging system for an electric vehicle according to claim 1, wherein the vending machine, the electric vehicle charger, and the power distribution unit are provided in an integrated housing. An in-compartment sensor for measuring the in-compartment temperature of the vending machine;
It has a temperature change prediction table storing data for predicting the temperature change in the cabinet,
The power distribution means includes
The power is distributed so that the internal temperature does not deviate from a predetermined temperature range based on the measured value of the internal sensor and the data of the temperature change prediction table. The electric vehicle charging system described. The power distribution means includes
The electric vehicle charging system according to any one of claims 1 to 4, wherein power is distributed so that charging of the electric vehicle is completed according to a desired end time set by a user of the electric vehicle. The power distribution means includes
The electric vehicle charging system according to any one of claims 1 to 4, wherein the electric power is distributed in accordance with the set charging reservation start time and / or charging reservation end time. The power distribution means includes
The electric vehicle charging system according to claim 6, wherein electric power is distributed based on a start time of the charge reservation so that the vending machine is overcooled or overheated before the start time. Having a start command storage means for storing a command procedure for starting charging of an electric vehicle by a user;
The power distribution means includes
Immediately after the charging start command procedure, if it is not a condition to transfer power distribution from the vending machine to the electric vehicle charger, the electric procedure is performed based on the command procedure stored in the start command storage means. The electric power is distributed so that the electric vehicle charger automatically starts the charging operation to the electric vehicle after the condition for transferring the electric power to the vehicle charger is satisfied. An electric vehicle charging system according to claim 1.

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