WO2019090529A1

WO2019090529A1 - Wireless charging and discharging device

Info

Publication number: WO2019090529A1
Application number: PCT/CN2017/109994
Authority: WO
Inventors: 胡小冬; 杨必华; 赵越
Original assignee: 深圳市柔宇科技有限公司
Priority date: 2017-11-08
Filing date: 2017-11-08
Publication date: 2019-05-16
Also published as: CN110770995A

Abstract

A wireless charging and discharging device (10), comprising an energy storage unit (11), a processing unit (12), a transmission control unit (13), a reception control unit (14), a first coil (15), a second coil (16), and a magnetic core (17). The energy storage unit (11) is electrically connected to the transmission control unit (13) and the reception control unit (14). The first coil (15) is electrically connected to the processing unit (12) by means of the transmission control unit (13). The second coil (16) is electrically connected to the processing unit (12) by means of the reception control unit (14). The first coil (15) and the second coil (16) share the magnetic core (17) and do not work at the same time. When the processing unit (12) receives a discharging signal, a first control signal is output to the transmission control unit (13) and the reception control unit (14). In response to the first control signal, the transmission control unit (13) controls the first coil (15) to cooperate with the magnetic core (17) to transmit a power signal of the energy storage unit (11) to the exterior of the wireless charging and discharging device (10).

Description

Wireless charging and discharging device

Technical field

The invention relates to a wireless charging and discharging technology, and in particular to a wireless charging and discharging device with wireless charging and wireless discharging.

Background technique

With the widespread use of smart electronic products, the power consumption of smart electronic products has gradually increased with time of use or running programs. As a result, the time and frequency required to charge smart electronic products rises rapidly. Especially when the user is in an outdoor environment, there is no environment for the power output, or the charging device is forgotten, and the power of the smart electronic device cannot support the user to complete the necessary operations, which greatly affects the convenience of the user, and the wired charging device also It takes up more space, which also makes it difficult for users to carry, which reduces the user experience.

Summary of the invention

In order to solve the problem that the current wired charging device has low experience, the embodiment of the invention discloses a wireless charging and discharging device with high convenience.

The invention discloses a wireless charging and discharging device, comprising an energy storage unit, a processing unit, a transmission control unit, a receiving control unit, a first coil, a second coil and a magnetic core. The energy storage unit is electrically connected to the emission control unit and the reception control unit, the first coil is electrically connected to the processing unit by the emission control unit, and the second coil is passed through the receiving control unit The processing unit is electrically connected, the first coil and the second coil share the magnetic core and do not work at the same time, and output a first control signal to the emission control unit when the processing unit receives the discharge signal And a receiving control unit, the transmitting control unit controls the first coil operation in response to the first control signal, and the receiving control unit controls the second coil to not operate in response to the first control signal, the first The coil cooperates with the magnetic core to transmit a power signal of the energy storage unit to the outside of the wireless charging and discharging device.

Compared with the prior art, the wireless charging device can not only receive the power signal from the outside for storage, but also can output the power signal to charge other electronic devices, and simultaneously perform the two coils including the first coil and the second coil respectively. Charging or discharging, so that charging or discharging have mutual A separate electromagnetic coil prevents electromagnetic interference between the first coil and the second coil.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings to be used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without paying for creative labor.

1 is a circuit block diagram of a wireless charging and discharging device according to a first embodiment of the present invention;

2 is a schematic plan view showing the first coil and the second coil shown in FIG. 1;

3 is a schematic plan view showing the first coil and the second coil shown in FIG. 1 in a modified embodiment of the present invention;

4 is a schematic diagram showing the overall structure of a wireless charging device according to a second embodiment of the present invention;

Fig. 5 is a side view showing the structure of the first coil, the second coil and the magnetic core shown in Fig. 4.

Detailed ways

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The specific structure and working principle of the wireless charging and discharging device will be specifically described below with reference to the accompanying drawings.

Please refer to FIG. 1. FIG. 1 is a circuit block diagram of a wireless charging and discharging device 10 according to a first embodiment of the present invention. In this embodiment, the wireless charging and discharging device 10 is a mobile communication device, such as a mobile phone or a tablet computer. Among them, the wireless charging and discharging device 10 includes a display screen for image display and a rear housing that is positive with the display screen.

As shown in FIG. 1 , the wireless charging and discharging device 10 includes an energy storage unit 11 , a processing unit 12 , a transmission control unit 13 , a receiving control unit 14 , a first coil 15 , a second coil 16 , a magnetic core 17 , and a gravity sensing unit 18 . And an instruction receiving module 19.

The energy storage unit 11 is for storing externally supplied electrical energy and outputting the stored electrical energy to other electronic devices.

The processing unit 12 is electrically connected to the emission control unit 13, the receiving control unit 14, the gravity sensing unit 18, and the command receiving module 19, and the processing unit 12 is configured to receive a charging signal or a discharging signal, and output corresponding signals according to the charging signal or the discharging signal. The control signal is sent to the transmit control unit 13 and the receive control unit 14, thereby controlling the transmit control unit 13 to cooperate with the first coil 15 or to control the receive control unit 14 to cooperate with the second coil 16. The charging signal and the discharging signal may be from the self-gravity sensing unit 18 or from the command receiving module 19.

The transmitting control unit 13 is electrically connected to the first coil 15, that is, the first coil 15 is electrically connected to the processing unit 12 through the emission control unit 13; the receiving control unit 14 is electrically connected to the second coil 16, and the second coil 16 is passed through the receiving control unit. 14 is electrically connected to the processing unit 12. The first coil 15 and the second coil 16 share the magnetic core 17 and do not operate at the same time, whereby the first coil 15 cooperates with the magnetic core 17 to generate an electromagnetic effect, and the second coil 16 cooperates with the magnetic core 17 to generate an electromagnetic effect. . In this embodiment, the first coil 15 and the second coil 16 are enameled wires.

Specifically, the gravity sensing unit 18 is configured to sense the current position state of the wireless charging and discharging device 10, that is, according to the obtained value of the Z axis, it is determined that the wireless charging and discharging device 10 is currently the display screen facing up or down, or It is said that the wireless charging and discharging device 10 is currently the display screen being closer to the user or away from the user than the rear case.

The gravity sensing unit 18 outputs a corresponding charging signal or a discharging signal to the processing unit 12 according to the current position state of the wireless charging and discharging device 10 .

In this embodiment, when the display screen of the wireless charging and discharging device 10 faces downward, it indicates that the wireless charging and discharging device 10 needs to output an electrical signal to an external device for discharging to charge the external device in a discharging mode; when the wireless charging and discharging device 10 The display screen is upward, indicating that the wireless charging and discharging device 10 receives an external device output electrical signal to charge itself, in a charging mode.

Then, when the acceleration value of the Z-axis acquired by the gravity sensing unit 18 ranges from -9.5 to -10, it indicates that the current position state of the wireless charging and discharging device 10 is that the display screen faces downward, and the wireless charging and discharging device 10 is required to be represented. In the discharge mode, the acceleration value of the Z-axis at -9.5 to -10 is supplied as a discharge signal to the processing unit 12, and correspondingly, the processing unit 12 outputs the first control signal to the transmitting unit 13 and receiving according to the discharge signal. Control unit 14. Preferably, the acceleration value of the Z-axis is -9.8, indicating that the current position state of the wireless charging and discharging device 10 is that the display screen faces downward.

When the acceleration value of the Z-axis acquired by the gravity sensing unit 18 is not within the range of -9.5 to -10, then It is indicated that the current position state of the wireless charging and discharging device 10 is that the display screen is facing upward, and the wireless charging and discharging device 10 is required to be in the charging mode, whereby the acceleration value of the Z axis not within -9.5 to -10 is provided as a charging signal. To the processing unit 12, correspondingly, the processing unit 12 outputs a second control signal to the transmitting unit 13 and the receiving control unit 14 according to the charging signal.

The first control unit 13 controls the operation of the first coil 15 when receiving the first control signal sent by the processing unit 12, and the first coil 15 cooperates with the magnetic core 17 to transmit the power signal of the energy storage unit 11 to the outside of the wireless charging and discharging device 10. The purpose of the discharge is such that the external electronic device is charged. At this time, when the reception control unit 14 receives the first control signal corresponding to the discharge signal transmitted by the processing unit 12, it controls the second coil 16 to stop operating.

The receiving control unit 14 controls the second coil 16 to operate when receiving the second control signal corresponding to the charging signal sent by the processing unit 12, and the second coil 16 cooperates with the magnetic core 17 to receive an electrical signal from the outside of the wireless charging and discharging device 10 and The electrical signal is converted into an induced current and transmitted to the energy storage unit 11 for storage to achieve the purpose of charging.

The specific cooperation process between the gravity sensing unit 18 and the processing unit 12 is as follows:

The preset mode of the wireless charging and discharging device 10 is the charging mode, that is, the default state of the wireless charging and discharging device 10 is the charging mode, that is, the processing unit 12 receives the charging signal by default, and correspondingly outputs the second control signal to the emission control. The unit 13 and the receiving control unit 14, and wherein the transmitting control unit 13 controls the first coil 15 to suspend operation, and the receiving control unit 14 controls the second coil 16 to be in an operating state. At this time, if there is an external device providing an electrical signal, the second coil 16 cooperates with the magnetic core 17 to receive the electrical signal and the induced current generated by the electromagnetic induction principle is transmitted to the energy storage unit 11.

When the gravity sensing unit 18 sends the obtained sensing data to the processing unit 12, the processing unit 12 determines, according to the sensing data, that the current position of the wireless charging and discharging device 10 is in the discharge mode corresponding to the display screen facing downward, indicating that the processing unit 12 receives the discharge. The signal, the wireless charging and discharging device 10 enters the discharging mode from the charging mode, that is, the processing unit 12 outputs the first control signal corresponding to the discharging signal to the transmitting control unit 13 and the receiving control unit 14 to start the first coil 15 in the working state. The second coil 16 is controlled to suspend operation.

Preferably, the wireless charging and discharging device 10 can output a prompt message to notify the user that the current wireless charging and discharging device 10 is in the discharging mode, for example, displaying corresponding prompt information from the display screen or setting a charging indicator such as a discharging indicator to display. At the same time, the flashing frequency of the charging indicator and the discharge indicator In the same manner, the discharge indicator light is turned on when the wireless charging and discharging device 10 enters the discharge mode and blinks at a predetermined frequency, and the flashing frequency of the discharge indicator lamp can be preset.

Preferably, during the first preset time, when the gravity sensing unit 18 determines that the position state corresponding to the discharge state of the wireless charging and discharging device 10 has not changed, and the wireless charging and discharging device 10 and the electronic device to be charged meet the preset condition. When, for example, the two are located at a preset distance or the mutual authentication information is successfully verified, that is, after the handshake is successful, the wireless charging and discharging device 10 maintains the discharge mode.

Preferably, when the wireless charging and discharging device 10 and the electronic device to be charged do not meet the preset condition, the wireless charging and discharging device 10 maintains the discharging mode for a second preset time, and when the second preset time is exceeded, the wireless charging and discharging device 10, and the electronic device to be charged still does not meet the preset condition, the wireless charging and discharging device 10 switches to the charging mode; when in the second preset time, the wireless charging and discharging device 10 and the electronic device to be charged re-compliance with the preset condition Then, the wireless charging and discharging device 10 remains in the discharge mode.

Preferably, when the gravity sensing unit 18 determines that the position state corresponding to the discharge state of the wireless charging and discharging device 10 changes, for example, the display screen is turned upward, but there is no electronic device to be charged that meets the preset condition, the wireless charging The discharge device 10 maintains the discharge mode for a second predetermined time and discharges according to a preset discharge threshold. The discharge threshold can be set according to actual needs, such as 30%, 50%, 80%, 100%. If the wireless charging and discharging device 10 and the electronic device to be charged meet the aforementioned preset condition within the first preset time, the wireless charging and discharging device 10 still maintains the discharging mode. At this time, the charging indicator and the reference indicator flash at the same frequency.

The command receiving module 19 receives an operation of the user to generate an operation command corresponding to the operation, and outputs a corresponding charging signal or a discharge signal to the processing unit 12 according to the operation command. In this embodiment, the command receiving module 19 is a key switch or a touch screen.

Please refer to FIG. 2 , which is a schematic plan view of the first coil 15 and the second coil 16 as shown in FIG. 1 .

The first coil 15 and the second coil 16 are both disposed on one side of the magnetic core 17, and are all located in the same plane. The first coil 15 and the second coil 16 are insulated from each other.

At the same time, the first coil 15 includes a first conductive end 151 and a second conductive end 152. The first conductive end 151 is fixed near the central reference point O1, and then the first coil 15 is circumferentially disposed around the first conductive end 151 with respect to the central reference point O1, and then the second conductive end 152 is disposed at the first The outermost side of the coil 15.

The second coil 16 is rectangularly surrounded on the outer side of the entire first coil 15 with respect to the center reference point O1. Settings. The second coil includes a third conductive end 161 and a fourth conductive end 161. The third conductive end 161 is circumferentially disposed around the central reference point O1 from a position adjacent to the second conductive end 152, thereby being fourth. The conductive end 161 is located at the outermost side of the first coil 15 and the second coil 16 as a whole.

Thus, the first conductive end 151, the second conductive end 152 and the third conductive end 161 extend from the inside of the first coil 15 and the second coil 16 to the outside of the second coil 16 so as to be electrically connected to other units. The fourth conductive end 162 is directly outside the second coil 17.

For example, FIG. 3 is a schematic plan view showing the first coil 25 and the second coil 26 in a modified embodiment.

In this embodiment, the first coil 15 and the second coil 16 are alternately arranged around the center reference point O1.

Specifically, the first conductive end 151 of the first coil 15 and the third conductive end 161 of the second coil 16 are both fixed at a position adjacent to the center reference point O1, and the synchronization starts to be circumferentially arranged with respect to the center reference point O1. Thereby, the second conductive end 152 of the first coil 15 and the fourth conductive end 162 of the second coil 16 are located adjacent to the outermost sides of the first and

second coils

15, 16.

Compared with the prior art, the wireless charging device 30 can not only receive the power signal from the outside for storage, but also can output the power signal to charge other electronic devices. At the same time, since the first coil 15 and the second coil 16 are included, The coils are respectively charged or discharged so that the charging or discharging has mutually independent electromagnetic coils, preventing electromagnetic interference between the first coil 15 and the second coil 16.

Please refer to FIG. 4 , which is a schematic diagram of the overall structure of the wireless charging device 30 according to the second embodiment of the present invention.

As shown in FIG. 4, the wireless charging device 30 is a backpack, and the circuit power supply included therein is substantially the same as the wireless charging and discharging device in the first embodiment, except for the first coil 35, the second coil 36, and the magnetic core 37. Shape structure. The first coil 35, the second coil 36, and the magnetic core 37 are located on one side of the backpack 30.

Please refer to FIG. 5 , which is a schematic side view of the first coil 35 , the second coil 36 , and the magnetic core 37 as shown in FIG. 4 .

As shown in FIG. 5, the first coil 35 and the second coil 36 are respectively located on opposite sides of the magnetic core 37. Specifically, the magnetic core 37 includes a first sub-magnetic core 371 and a second sub-magnetic core 372 disposed adjacent to each other, and the first coil 35 is disposed on a side of the first sub-magnetic core 371 away from the second magnetic core 372, and the second coil 36 is disposed on a side of the second sub-core 372 away from the first sub-core 371.

Preferably, the wireless charging device 30 further includes a heat dissipating component 301 disposed between the first sub-core 371 and the second sub-core 372, that is, the heat dissipating component 301 is located adjacent to the first sub-core 371. One side of the two sub-cores 372, at the same time, the heat dissipating component 301 is also located on the side of the second sub-core 372 adjacent to the first sub-core 371. That is, the first sub-magnetic core 371 and the second sub-magnetic core 372 share one heat dissipating component 301.

In this way, the charging or discharging can be controlled by the command receiving module (not shown) when the backpack is out and there is no other power source. For example, when the backpack is located in an indoor environment or has a wireless charging device, charging can be performed thereon, and when the outdoor environment or other charging device is not available, the electronic device to be charged can be charged through the backpack.

The principles and embodiments of the present invention are described herein with reference to specific examples. The description of the above embodiments is only for the purpose of understanding the core idea of the present invention. At the same time, for those skilled in the art, according to the idea of the present invention, There is a change in the scope of the present invention and the scope of the application, and the contents of the present specification should not be construed as limiting the invention.

Claims

A wireless charging and discharging device, comprising: an energy storage unit, a processing unit, a transmission control unit, a receiving control unit, a first coil, a second coil, and a magnetic core, wherein the energy storage unit is electrically connected to the emission control a unit and a receiving control unit, the first coil is electrically connected to the processing unit by the transmitting control unit, and the second coil is electrically connected to the processing unit by the receiving control unit, the first The coil shares the magnetic core with the second coil and does not operate at the same time. When the processing unit receives the discharge signal, it outputs a first control signal to the emission control unit and the reception control unit, and the emission control unit responds to the The first control signal controls the first coil operation and the receiving control unit controls the second coil to be inoperative in response to the first control signal, the first coil cooperates with the magnetic core to store the energy storage unit The power signal is sent to the outside of the wireless charging and discharging device.
The wireless charging and discharging device according to claim 1, wherein when the processing unit receives the charging signal, the second control signal is outputted to the transmitting control voltage and the receiving control unit, and the receiving unit responds to the The second control signal controls the second coil to cooperate with the magnetic core to receive an electrical signal from the outside of the wireless charging and discharging device and convert it into an induced current for transmission to the energy storage unit for storage.
The wireless charging and discharging device according to claim 2, wherein the first coil is circumferentially disposed and located in a same plane with respect to a central reference point, and the second coil is circumferentially disposed on the central reference point with respect to the central reference point Outside the first coil, the first coil and the second coil are insulated from each other.
The wireless charging and discharging device according to claim 3, wherein the first coil comprises a first conductive end and a second conductive end respectively electrically connected to the transmitting control unit, and the second coil comprises respectively Electrically connected to the third conductive end of the receiving control unit and the fourth conductive end, the first conductive end, the second conductive end and the third conductive end are from the first coil and the second coil An outer side of the second coil extends from a position near the center reference point, and the fourth conductive end is located outside the second coil.
The wireless charging and discharging device according to claim 2, wherein the first coil and the second coil are alternately arranged around the central reference point and are located in the same plane, the first coil and the second coil. The coils are insulated from each other.
The wireless charging and discharging device according to claim 5, wherein the first coil comprises a first conductive end and a second conductive end electrically connected to the transmitting control unit, respectively, the second line The ring includes a third conductive end electrically connected to the receiving control unit and the fourth conductive end, wherein the first conductive end and the third conductive end extend from the position near the center reference point to the second coil The second conductive end and the fourth conductive end are located outside the second coil.
The wireless charging and discharging device according to claim 2, wherein the wireless charging and discharging device is a mobile communication device, comprising a display screen serving as an image display and a rear case facing the display screen, the wireless charging device The discharge device further includes a gravity sensing unit electrically connected to the processing unit, the gravity sensing unit is configured to sense a current position state of the wireless charging and discharging device, and the processing unit is before receiving the discharging signal Outputting a charging signal; when the gravity sensing unit senses that the current position state of the wireless charging and discharging device is that the display screen is farther away from the user than the back casing, the gravity sensing unit senses the position state Outputting to the processing unit as a discharge signal, when the gravity sensing unit senses that the current position state of the wireless charging and discharging device is that the display screen is closer to the user than the back casing, the gravity sensing unit will feel The detected position state is output as a charging signal to the processing unit.
The wireless charging and discharging device according to claim 7, wherein when the acceleration value of the Z-axis acquired by the gravity sensor ranges from -9.5 to -10, the current position state of the wireless charging and discharging device is determined as an image. The display surface is away from the user than the back facing housing.
The wireless charging and discharging device according to claim 7, wherein the wireless charging and discharging device further comprises an instruction receiving module for receiving an operation of the user, and selectively outputting the discharging signal according to a user operation. Or the charging signal to the processing unit.
The wireless charging and discharging device according to claim 1, wherein the command receiving module is a button switch or a touch screen.
The wireless charging and discharging device according to claim 1, wherein the wireless charging and discharging device is a backpack, and the first coil, the second coil, and the magnetic core are located on one side of the backpack, and the magnetic core The first sub-core and the second sub-core are disposed adjacent to each other, the first coil is disposed on a side of the first sub-core away from the second core, and the second coil is disposed on the second sub-core away from the One side of a sub-core.
The wireless charging device according to claim 11, wherein the wireless charging device further comprises a heat dissipating component disposed between the first sub-core and the second sub-core, wherein The heat dissipating component is located on a side of the first sub-core adjacent to the second sub-core and on a side of the second sub-core adjacent to the first sub-core, the first sub- Magnetic core and said first The two sub-cores share the heat dissipating component.