CN102170159B - Solar-Based Mobile Wireless Charging System - Google Patents
Solar-Based Mobile Wireless Charging System Download PDFInfo
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Abstract
本发明是一种基于太阳能的移动式无线充电系统，包括太阳能蓄电模块、前处理模块、发射模块、接收模块和后处理模块组成。本发明中的太阳能蓄电模块在传感器网络无需充电时工作，将太阳辐射的能量转换为电能储存在蓄电池中。在传感器网络需要充电时，蓄电池与太阳能电池和太阳能控制器分离，将蓄电池和前处理模块和发射模块一起移动到不同的传感器终端处对其充电。发射模块和接收模块采用磁共振方式进行无线能量传输。本发明利用太阳能这种清洁能源，采取发射模块可移动的方式，对传感器网络中数量多、分布广的传感器终端分别进行无线充电，具有传输效率高、传输距离远、实现灵活、成本低等优点。
The invention is a mobile wireless charging system based on solar energy, which comprises a solar power storage module, a pre-processing module, a transmitting module, a receiving module and a post-processing module. The solar power storage module in the present invention works when the sensor network does not need to be charged, and converts the energy of solar radiation into electric energy and stores it in the storage battery. When the sensor network needs to be charged, the storage battery is separated from the solar cell and the solar controller, and the storage battery, the pre-processing module and the transmitting module are moved to different sensor terminals for charging. The transmitting module and the receiving module adopt the magnetic resonance method for wireless energy transmission. The invention utilizes solar energy as a clean energy source, adopts a movable transmission module, and wirelessly charges a large number of widely distributed sensor terminals in the sensor network, which has the advantages of high transmission efficiency, long transmission distance, flexible implementation, and low cost. .
Description
Technical field
The present invention relates to the wireless power technical field, relate in particular to a kind of Mobile wireless charging system based on solar energy.
Background technology
Present wireless energy transmission technology can be divided into several kinds according to transmission mechanism, range of application and efficient.Far field utilization electromagnetic wave propagation theory, the mode Propagation of Energy that namely the radio propagation signal is identical.This technology has been successfully applied to UHF RFID label, also the studied satellite solar power station that is applied to.The efficiency of transmission of this technology can still must accurately be aimed at up to 90%, can only carry out the transmission of point-to-point form of straight lines.And the RF broadcast mode is a kind of method of omnirange transmitting energy, in the overlay area Anywhere all can the wireless transmission energy.But, because power density is pressed 1/r
2Reduce, cause little several orders of magnitude of energy of the energy Ratios emission that receives, efficiency of transmission is low.The near field electromagnetic induction technology does not rely on Electromagnetic Wave Propagation, and efficient is higher, but transmission range is very near, only has about 1 centimetre.The near field RFID technology then improves transmission range by sacrificing efficient, and its transmission range can reach tens centimetres, but efficient only has 1%-2%.
Along with the rise of ubiquitous service, cloud computing and Internet of Things, supported the development of a collection of new industry, such as intelligent communication, intelligent grid, intelligent transportation, Smart Home and size intelligent healthcare etc.These new industries depend on sensor network mostly, and these number of sensors are many, distribute wide, can't or be inconvenient to use the wire power supply or change the battery maintenance high cost, therefore need the unconventional power supply technique of development.Adopt the wireless power technology, can make people take leave of persistant various power lines and the electric power cabling of cobweb formula, can save wiring used a large amount of copper, plastic or other material, and the quantity that reduces waste battery, reduction is to the pollution of environment, improve people's living environment, have great using value.
Summary of the invention
Technical problem for above existence, the purpose of this invention is to provide a kind of Mobile wireless charging system based on solar energy, utilize this clean energy resource of solar energy, the mode of taking transmitter module to move is carried out respectively wireless charging to many, the widespread sensor terminals of quantity in the sensor network.
For achieving the above object, the present invention adopts following technical scheme: a kind of Mobile wireless charging system based on solar energy, comprise an electric supply installation and one or above charging device, each charging device is arranged on sensor terminal places different in the sensor network, electric supply installation comprises solar energy power accumulating module, pre-processing module and transmitter module, each charging device comprises receiver module and post-processing module
The solar energy power accumulating module includes solar module, controller for solar and storage battery, when carrying out solar energy power accumulating, the output of solar module links to each other with the input of controller for solar, the output of controller for solar links to each other with storage battery, and pre-processing module, transmitter module and each charging device are not worked; When charging for sensor network, the output of controller for solar and storage battery disconnect, storage battery links to each other with pre-processing module, and storage battery and pre-processing module, transmitter module move near the sensor terminal together, by set charging device sensor terminal are charged;
Pre-processing module includes Frequency generated module and power amplifier module, the input of the output access Frequency generated module of storage battery and the input of power amplifier module, the output of Frequency generated module links to each other with the input of power amplifier module, and the frequency that the Frequency generated module produces is operating frequency;
Transmitter module includes drive coil L3-1, transmitting coil L3-2 and tuning capacitance C3-1, C3-2, drive coil L3-1 links to each other with the output of power amplifier module, drive coil L3-1 and tuning capacitance C3-1 compose in parallel resonant tank, and resonance is in the operating frequency place, the output signal of drive coil L3-1 through free-space propagation to transmitting coil L3-2; Transmitting coil L3-2 and tuning capacitance C3-2 compose in parallel resonant tank, and resonance is in the operating frequency place, the output signal of transmitting coil L3-2 through free-space propagation near charging device;
If total n charging device, wherein the receiver module of i charging device includes receiving coil L4-i-1, loading coil L4-i-2 and tuning capacitance C4-i-1, C4-i-2, and i gets 1～n; Receiving coil L4-i-1 and tuning capacitance C4-i-1 compose in parallel resonant tank, and resonance is in the operating frequency place, and receiving coil L4-i-1 receives transmitting coil L3-2 through the output signal of free-space propagation; Loading coil L4-i-2 and tuning capacitance C4-i-2 compose in parallel resonant tank, and resonance is in the operating frequency place, the output signal of receiving coil L4-i-1 through free-space propagation to loading coil L4-i-2;
The post-processing module of each charging device includes high-frequency rectification module and Voltage stabilizing module, the output of loading coil is connected to the input of high-frequency rectification module in the corresponding receiver module, the output of high-frequency rectification module is connected to the input of Voltage stabilizing module, and the output of Voltage stabilizing module is connected to load.
The present invention is applicable to that sensor terminal quantity is many, the charging of widespread sensor network.When sensor terminal need not to charge, by solar energy to charge in batteries.When sensor terminal need to charge, by one movably transmitter module a plurality of sensor terminals are carried out wireless charging, transmitter module then by be full of the electricity storage battery power supply.Transmitter module and receiver module adopt the magnetic resonance mode to carry out wireless energy transfer, have that efficiency of transmission is high, long transmission distance, realization flexibly, low cost and other advantages.
Description of drawings
Fig. 1 is the system block diagram of the embodiment of the invention;
Fig. 2 is the block diagram of solar energy power accumulating module in the embodiment of the invention;
Fig. 3 is the block diagram of pre-processing module in the embodiment of the invention;
Fig. 4 is the block diagram of transmitter module and receiver module in the embodiment of the invention;
Fig. 5 is the block diagram of post-processing module in the embodiment of the invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
Referring to Fig. 1, the embodiment of the invention comprises an electric supply installation 100 and one or above charging device, establishes total n charging device 200-1,200-2 ... 200-n.Each charging device 200-1,200-2 ... 200-n is arranged on sensor terminal places different in the sensor network, electric supply installation 100 comprises solar energy power accumulating module 1, pre-processing module 2 and transmitter module 3, each charging device comprises receiver module and post-processing module, be that charging device 200-1 comprises receiver module 4-1 and post-processing module 5-1, charging device 200-2 comprises receiver module 4-2 and post-processing module 5-2 ... charging device 200-n comprises receiver module 4-n and post-processing module 5-n.
Solar energy power accumulating module 1 includes solar module 11, controller for solar 12 and storage battery 13, when carrying out solar energy power accumulating, the output of solar module 11 links to each other with the input of controller for solar 12, the output of controller for solar 12 links to each other with storage battery 13, with the power conversion of solar radiation be electrical power storage in storage battery 13, pre-processing module 2, transmitter module 3 and each charging device 200-1,200-2 ... 200-n does not work.When charging for sensor network, the output of controller for solar 12 and storage battery 13 disconnect, and storage battery 13 separates with controller for solar 12 with solar module 11, and storage battery 13 links to each other with pre-processing module 2.Particularly, the output of storage battery 13 links to each other with the input of pre-processing module 2, and the output of pre-processing module 2 links to each other with the input of transmitter module 3.Storage battery 13 moves to together different sensor terminal places with pre-processing module 2, transmitter module 3 and charges.Realize the wireless energy transfer of charging based on the magnetic resonance principle, transmitter module 3 and receiver module 4-1,4-2 ... 4-n resonates at the operating frequency place that pre-processing module 2 produces.
Referring to Fig. 2, the solar energy power accumulating module 1 in the embodiment of the invention comprises solar module 11, controller for solar 12, storage battery 13.When carrying out solar energy power accumulating, the output of solar module 11 links to each other with the input of controller for solar 12, and the output of controller for solar 12 links to each other with the input of storage battery 13.Described solar module 11 is converted to electric energy with the emittance of the sun, according to power demand, can adopt monocrystaline silicon solar cell, polysilicon solar cell or amorphous silicon thin-film solar cell.Described controller for solar 12 can adopt MCU to realize, controls the operating state of whole solar energy power accumulating module 1 by MCU, and storage battery (group) 13 is played the effect of charge protection, over.During implementation, can adopt the WS-MPPT series of Wei Ershi company.Described storage battery 13 need it's time to offer follow up device with the electrical power storage that solar module 11 provides again, and generally adopts lead-acid battery.The battery pack that can adopt a plurality of storage batterys to consist of during implementation is so that the more electric energy of storage.
Referring to Fig. 3, the pre-processing module 2 in the embodiment of the invention comprises that Frequency generated module 21 and power amplifier module 22 form.When charging for sensor network, the input of Frequency generated module 21 links to each other with the output of storage battery 13, and the input of power amplifier module 22 links to each other with the output of Frequency generated module 21 and the output of storage battery 13.Described Frequency generated module 21 is mainly finished the generation of oscillator signal, for the transmission of energy provides a tranmitting frequency, the i.e. operating frequency of native system.Can adopt the Kao Bizi oscillating circuit to consist of during implementation, form oscillation circuit by inductance, electric capacity, produce the sine wave signal of fixed frequency according to the transmission range needs.Operating frequency is generally about 10MHz, also can adopt other big or small frequencies.The operating frequency of the embodiment of the invention adopts 10MHz.The direct current that the power acquisition of Frequency generated module 21 directly provides with storage battery 13.Described power amplifier module 22 can adopt two stage power to amplify, and providing under the necessary power level, guarantees frequency accuracy.The direct current that the power supply of power amplifier module 22 also adopts storage battery 13 directly to provide.
Referring to Fig. 4, the transmitter module 3 in the embodiment of the invention comprises drive coil L3-1, tuning capacitance C3-1, transmitting coil L3-2 and tuning capacitance C3-2.Drive coil L3-1 links to each other with the output of power amplifier module 22, and the output signal of drive coil L3-1 arrives transmitting coil L3-2 through free-space propagation.Drive coil L3-1 and tuning capacitance C3-1 compose in parallel resonant tank, and resonance frequency is 10MHz.Transmitting coil L3-2 and tuning capacitance C3-2 compose in parallel resonant tank, and resonance frequency is 10MHz.The output signal of transmitting coil L3-2 arrives near charging device through free-space propagation.Among the embodiment, drive coil L3-1 and transmitting coil L3-2 are circular coil, and diameter is 50cm.The distance of drive coil L3-1 and transmitting coil L3-2 is about 10cm.Tuning capacitance C3-1, C3-2 are variable capacitance, conveniently resonance frequency are adjusted to 10MHz.
Total n charging device in the embodiment of the invention, wherein the receiver module 4-i of i charging device 200-i includes receiving coil L4-i-1, loading coil L4-i-2 and tuning capacitance C4-i-1, C4-i-2, and i gets 1～n; Receiving coil L4-i-1 and tuning capacitance C4-i-1 compose in parallel resonant tank, and resonance is in operating frequency 10MHz place, and receiving coil L4-i-1 receives transmitting coil L3-2 through the output signal of free-space propagation; Loading coil L4-i-2 and tuning capacitance C4-i-2 compose in parallel resonant tank, and resonance is in operating frequency 10MHz place, the output signal of receiving coil L4-i-1 through free-space propagation to loading coil L4-i-2.Specifically referring to Fig. 4, receiver module 4-1 in the embodiment of the invention comprises receiving coil L4-1-1, tuning capacitance C4-1-1, loading coil L4-1-2, tuning capacitance C4-1-2, and receiver module 4-2 comprises receiving coil L4-2-1, tuning capacitance C4-2-1, loading coil L4-2-2, tuning capacitance C4-2-2 ... receiver module 4-n comprises receiving coil L4-n-1, tuning capacitance C4-n-1, loading coil L4-n-2, tuning capacitance C4-n-2.Move to together sensor terminal place, charging device 200-1 place as example take storage battery 13 and pre-processing module 2, transmitter module 3, the course of work of receiver module 4-1 is, receive the output signal of the transmitting coil L3-2 that comes through free-space propagation as receiving coil L4-1-1, its output signal arrives loading coil L4-1-2 through free-space propagation.The operation principle of other receiver modules is identical.Among the embodiment, receiving coil L4-1-1, L4-2-1 ... L4-n-1 and loading coil L4-1-2, L4-2-2 ... L4-n-2 is circular coil, and diameter is about 2cm, and the number of turn is 20 circles.Receiving coil L4-1-1 and loading coil L4-1-2, receiving coil L4-2-1 and loading coil L4-2-2 ... the distance of receiving coil L4-n-1 and loading coil L4-n-2 is about respectively 10cm.Tuning capacitance C4-1-1, C4-2-1 ... C4-n-1 and C4-1-2, C4-2-2 ..., C4-n-2 is variable capacitance, convenient resonance frequency is adjusted to 10MHz.
Referring to Fig. 5, the post-processing module 5-i of i charging device 200-i in the embodiment of the invention is comprised of high-frequency rectification module 5-i-1 and Voltage stabilizing module 5-i-2.The output of receiver module 4-i (being the output of loading coil L4-i-2) is connected to the input of high-frequency rectification module 5-i-1, the output of high-frequency rectification module 5-i-1 is connected to the input of Voltage stabilizing module 5-i-2, and the output of Voltage stabilizing module 5-i-2 is connected to the sensor terminal place as load.High-frequency rectification module 5-i-1 carries out high-frequency rectification to the output signal of receiver module 4-i, and output can be adopted diode rectification for the direct current signal of load; Voltage stabilizing module 5-i-2 carries out voltage stabilizing to the output signal of high-frequency rectification module 5-i-1, and the voltage of stable output can adopt 7805 modules to realize for sensor terminal.
The course of work of the embodiment of the invention is: solar energy power accumulating module 1 is worked when sensor network need not to charge, and is that electrical power storage is in storage battery 13 with the power conversion of solar radiation.When sensor network need to charge, storage battery 13 separated with controller for solar 12 with solar cell 11, storage battery 13 and pre-processing module 2 and transmitter module 3 is moved to the sensor terminal place together it is charged.Each sensor terminal place all is furnished with a cover and receives module and post-processing module.Storage battery 13, pre-processing module 2 are connected with transmitter module and are at first moved to receiver module 4-1 place to the load of its connection charging.Transmitter module 3 and receiver module 4-1 resonate at the operating frequency place that Frequency generated module 21 produces.Drive coil L3-1, transmitting coil L3-2, receiving coil L4-1-1, loading coil L4-1-2 retainer shaft symmetry, distance between transmitting coil L3-2 and the receiving coil L4-1-1 is different with operating frequency and different according to coil diameter, is about 1 ~ 2 meter under 10MHz.Transmitter module 3 and receiver module 4-1 carry out wireless energy transfer based on magnetic resonance, thereby wireless charging is carried out in load.After being full of electricity, storage battery 13, pre-processing module 2 are connected with transmitter module and are moved to receiver module 4-2 place to the load of its connection charging.Transmitter module 3 and receiver module 4-1 resonate at the operating frequency 10MHz place that Frequency generated module 21 produces.Drive coil L3-1, transmitting coil L3-2, receiving coil L4-2-1, loading coil L4-2-2 retainer shaft symmetry, the distance between transmitting coil L3-2 and the receiving coil L4-2-1 is about 1 ~ 2 meter.Transmitter module 3 and receiver module 4-2 carry out wireless energy transfer based on magnetic resonance, thereby wireless charging is carried out in load.The rest may be inferred ... storage battery 13, pre-processing module 2 are connected with transmitter module by moved by hand load charging to its connection to receiver module 4-n place.Transmitter module 3 and receiver module 4-n resonate at the operating frequency 10MHz place that Frequency generated module 21 produces.Drive coil L3-1, transmitting coil L3-2, receiving coil L4-n-1, loading coil L4-n-2 retainer shaft symmetry, the distance between transmitting coil L3-2 and the receiving coil L4-n-1 is about 1 ~ 2 meter.Transmitter module 3 and receiver module 4-n carry out wireless energy transfer based on magnetic resonance, thereby wireless charging is carried out in load.Like this, just can carry out wireless charging to many, the widespread all the sensors terminals of quantity in the sensor network by a transmitter module 3.
Above content is the present invention to be said the further description of doing in conjunction with optimum implementation, can not assert that implementation of the present invention is only limited to these explanations.It should be appreciated by those skilled in the art, limit in the situation that do not break away from by appended claims, can carry out in detail various modifications, all should be considered as belonging to protection scope of the present invention.
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| CN102386686A (en) * | 2011-11-08 | 2012-03-21 | 中国矿业大学 | Motion type wireless electric energy transmission system |
| CN103915658B (en) * | 2013-01-05 | 2016-08-03 | 陈彩惠 | Wireless charging method and device thereof |
| CN103368751B (en) * | 2013-07-01 | 2016-06-22 | 杭州电子科技大学 | A kind of contactless charge node dispositions method of facing sensing device network |
| CN104135088B (en) * | 2014-08-08 | 2016-06-08 | 哈尔滨工业大学 | Be applied to wireless power transmission suppressed frequency splitting non-equal dispatch coil to and manufacture method |
| CN106026343A (en) * | 2016-06-30 | 2016-10-12 | 珠海德光源集团有限公司 | Solar wireless charging device |
| CN106488587A (en) * | 2016-11-03 | 2017-03-08 | 国网安徽省电力公司信息通信分公司 | A kind of wireless sensing net node device based on wireless charging and wireless charging method |
| TW201836235A (en) * | 2017-03-23 | 2018-10-01 | 捷佳科技股份有限公司 | Wireless charging device |
| CN108039780B (en) * | 2018-01-30 | 2024-03-08 | 国网江苏省电力有限公司电力科学研究院 | A laser energy supply system for substations |
| CN108964284A (en) * | 2018-07-12 | 2018-12-07 | 深圳市谷粒科技有限公司 | A kind of power supply unit and method |
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| CN101924399A (en) * | 2010-04-12 | 2010-12-22 | 武汉大学 | Relay wireless power supply system based on magnetic resonance |
| CN101964551A (en) * | 2009-07-22 | 2011-02-02 | 索尼公司 | Power receiving apparatus, electrical power transmission system, charging device and electric power transfer method |
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| JP5238420B2 (en) * | 2008-09-11 | 2013-07-17 | 矢崎総業株式会社 | Wireless charging system for vehicles |
| JP5533856B2 (en) * | 2009-03-30 | 2014-06-25 | 富士通株式会社 | Wireless power supply system, wireless power transmitting apparatus, and wireless power receiving apparatus |
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| CN101964551A (en) * | 2009-07-22 | 2011-02-02 | 索尼公司 | Power receiving apparatus, electrical power transmission system, charging device and electric power transfer method |
| CN101924399A (en) * | 2010-04-12 | 2010-12-22 | 武汉大学 | Relay wireless power supply system based on magnetic resonance |
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