CN117394481A

CN117394481A - Wireless charging circuit, chip, device, charging method, apparatus, and storage medium

Info

Publication number: CN117394481A
Application number: CN202311310648.4A
Authority: CN
Inventors: 商永艺; 陈强; 周超; 金哲卿; 苟格; 沈旭江; 蒋键峰
Original assignee: Zhejiang Geoforcechip Technology Co Ltd
Current assignee: Zhejiang Geoforcechip Technology Co Ltd
Priority date: 2023-10-08
Filing date: 2023-10-08
Publication date: 2024-01-12

Abstract

The invention provides a wireless charging circuit, a chip, equipment, a charging method, a device and a storage medium, and relates to the technical field of wireless charging. The circuit comprises a control module and a resonance circuit, wherein the control module is communicated with equipment to be charged, and is used for identifying the equipment model of the equipment to be charged and generating a driving signal for driving the resonance circuit based on the equipment model; each model of equipment to be charged is provided with a charging mode corresponding to each other, and the charging mode is used for indicating the communication carrier frequency when the equipment to be charged is charged; and the resonant circuit receives the driving signal, turns on a target capacitor device based on the driving signal, forms a target resonant circuit corresponding to the charging mode, and charges the equipment to be charged based on the target resonant circuit. The invention can realize the charging compatibility of different electronic devices through one wireless charging circuit, and reduce the circuit cost.

Description

Wireless charging circuit, chip, device, charging method, apparatus, and storage medium

Technical Field

The present invention relates to the field of wireless charging technologies, and in particular, to a wireless charging circuit, chip, device, charging method, apparatus, and storage medium.

Background

The wireless charging technology (wireless charging technology, WCT) uses conductive media such as an electric field, a magnetic field, microwaves or laser to realize wireless transmission of electric energy, and has the advantages of no wire limitation, no plugging and the like, so that the application of the wireless charging technology to electronic equipment is increasingly widespread.

Currently, more and more electronic devices use wireless charging devices to wirelessly charge the electronic devices, for example, the electronic devices may be mobile phones, wearable devices, and the like. Conventional wireless charging devices can only charge one type of electronic device with one charger, and cannot charge different electronic devices. If the mobile phone wireless charging device can only charge the mobile phone, but can not charge the watch or the wireless earphone, although the multi-in-one charging device appears in the market, the multi-in-one charging device only simply packages the plurality of charging devices in one, the internal essence of the multi-in-one charging device is still a plurality of sets of charging devices, each set of charging device is provided with a respective charging circuit, and the problems of complex circuit and high cost exist.

Disclosure of Invention

In view of the above, the present invention aims to provide a wireless charging circuit, a chip, a device, a charging method, a device and a storage medium, which can solve the problems of complex charging circuit and high cost of the existing charging device.

Based on the above object, in a first aspect, the present invention proposes a wireless charging circuit, including a control module and a resonance circuit, where the control module is in communication with a device to be charged, and is configured to identify a device model of the device to be charged, and generate a driving signal for driving the resonance circuit based on the device model; each model of equipment to be charged is provided with a charging mode corresponding to each other, and the charging mode is used for indicating the communication carrier frequency when the equipment to be charged is charged; and the resonant circuit receives the driving signal, turns on a target capacitor device based on the driving signal, forms a target resonant circuit corresponding to the charging mode, and charges the equipment to be charged based on the target resonant circuit.

Optionally, the resonant circuit includes a transmitting coil and at least one resonant switching circuit; the resonance switching circuit comprises a switch component and a resonance capacitor, and the switch component controls the connection of the resonance capacitor based on the driving signal so as to form the target resonance circuit; the transmitting coil is used for charging the equipment to be charged based on the target resonant circuit.

Optionally, the transmitting coil includes a first transmitting coil and a second transmitting coil, where the first transmitting coil and the second transmitting coil are stacked and sealed, and a first end of the first transmitting coil and a first end of the second transmitting coil are connected with a PWM driving signal; the second end of the first transmitting coil and the second end of the second transmitting coil are connected with the resonant circuit.

Optionally, the resonant switching circuit includes a first resonant switching circuit, a second resonant switching circuit, and a third resonant switching circuit, and the target resonant circuit includes one or more of the first resonant switching circuit, the second resonant switching circuit, and the third resonant switching circuit; the first end of the first resonant switching circuit, the first end of the second resonant switching circuit and the first end of the third resonant switching circuit are respectively connected with the control module; the second end of the first resonant switching circuit and the second end of the third resonant switching circuit are connected with the second end of the first transmitting coil, and the second end of the second resonant switching circuit is connected with the second end of the second transmitting coil.

Optionally, the transmitting coil includes a first transmitting coil, the resonant switching circuit includes a first resonant switching circuit, the target resonant circuit includes the first resonant switching circuit, and the resonant circuit further includes a first capacitor; the first end of the first transmitting coil is connected with a PWM driving signal, the first end of the first resonance switching circuit is connected with the first end of the first capacitor, and the second end of the first resonance switching circuit and the second end of the first capacitor are both connected with the second end of the first transmitting coil.

Optionally, the first resonant switching circuit includes a plurality of resonant capacitors, and each resonant capacitor is connected in parallel and then connected in the first resonant switching circuit.

Optionally, the switch component of the resonant switching circuit is a dual NMOS switch.

Optionally, the control module comprises a driving source providing module and at least one path of IO conversion circuit; the driving source providing module is used for providing a driving source for a switch assembly of the resonant circuit; the IO conversion circuit is used for sending the driving signal to the resonance circuit.

Optionally, the number of the IO conversion circuits is the same as the number of the resonance switching circuits in the resonance circuit.

Optionally, the driving source providing module includes a unidirectional conduction diode and a bootstrap capacitor, a first end of the unidirectional conduction diode is connected with a first power supply, a second end of the unidirectional conduction diode is connected with a second power supply, a first end of the bootstrap capacitor is connected with a second end of the unidirectional conduction diode, and a second end of the bootstrap capacitor is connected with the resonant circuit.

Optionally, the IO conversion circuit includes a voltage stabilizing resistor, a driving switch and a current limiting resistor, wherein a first end of the voltage stabilizing resistor is connected between an input end of the IO conversion circuit and a first end of the driving switch, and a second end of the voltage stabilizing resistor is grounded; the first end of the current limiting resistor is connected to a driving power supply, and the second end of the current limiting resistor is connected between the second end of the driving switch and the output end of the IO conversion circuit.

In a second aspect, the present invention proposes a chip comprising: the wireless charging circuit of any one of the first aspects.

In a third aspect, the present invention proposes a wireless charging device comprising: the wireless charging circuit of any one of the first aspects.

In a fourth aspect, the present invention proposes a wireless charging method applied to the wireless charging circuit in any one of the first aspects, wherein the method includes: receiving a data packet sent by equipment to be charged, and identifying the model of the equipment to be charged according to the data packet; generating a driving signal for driving a resonant circuit in the wireless charging circuit based on the equipment model, wherein the driving signal is used for switching on a target capacitor device to form a target resonant circuit corresponding to the charging mode, and charging the equipment to be charged; the charging mode is used for indicating the communication carrier frequency when the equipment to be charged is charged.

In a fifth aspect, the present invention proposes a wireless charging device, the device comprising: the identification module is used for receiving a data packet sent by the equipment to be charged and identifying the model of the equipment to be charged according to the data packet; the driving module is used for generating a driving signal for driving the resonant circuit in the wireless charging circuit based on the equipment model, wherein the driving signal is used for switching on a target capacitor device to form a target resonant circuit corresponding to the charging mode, and charging the equipment to be charged; the charging mode is used for indicating the communication carrier frequency when the equipment to be charged is charged.

In a sixth aspect, there is also provided a wireless charging device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor running the computer program to implement the wireless charging method according to the fourth aspect.

In a seventh aspect, there is also provided a computer readable storage medium having stored thereon a computer program, wherein the program is executed by a processor to implement the wireless charging method according to the fourth aspect.

In general, the present invention has at least the following benefits:

according to the wireless charging circuit, the control module is communicated with the equipment to be charged to identify the equipment model of the equipment to be charged, a driving signal for driving the resonant circuit is generated based on the equipment model, the resonant circuit is used for connecting the target capacitor device based on the driving signal to form a target resonant circuit corresponding to the charging mode, and the equipment to be charged is charged based on the target resonant circuit. The charging mode is used for indicating the communication carrier frequency when the equipment to be charged is charged, so that the charging mode corresponding to the electronic equipment is switched according to different models of the electronic equipment, the communication carrier frequency matched with the electronic equipment is determined, the charging compatibility of different electronic equipment can be realized through a wireless charging circuit, and the circuit cost is reduced.

Drawings

In the drawings, the same reference numerals refer to the same or similar parts or elements throughout the several views unless otherwise specified. The figures are not necessarily drawn to scale. It is appreciated that these drawings depict only some embodiments according to the disclosure and are not therefore to be considered limiting of its scope.

Fig. 1 is a schematic diagram of a wireless charging circuit according to a first embodiment of the present invention;

fig. 2 is a schematic circuit diagram of a resonant circuit according to a first embodiment of the present invention;

fig. 3 is a schematic circuit diagram of a resonant circuit according to a first embodiment of the present invention;

fig. 4 shows a schematic diagram of a resonant capacitor structure of a resonant circuit according to a first embodiment of the present invention;

FIG. 5 is a schematic diagram of a resonant circuit according to a first embodiment of the present invention;

fig. 6 is a schematic circuit diagram of a control module according to a first embodiment of the present invention;

fig. 7 shows a schematic structural diagram of a chip according to a second embodiment of the present invention;

fig. 8 is a schematic structural diagram of a wireless charging device according to a third embodiment of the present invention;

fig. 9 is a schematic diagram showing steps of a wireless charging method according to a fourth embodiment of the present invention;

Fig. 10 is a schematic structural diagram of a wireless charging device according to a fifth embodiment of the present invention;

fig. 11 is a schematic structural diagram of a wireless charging device according to a sixth embodiment of the present invention;

fig. 12 is a schematic structural diagram of a computer-readable storage medium according to a seventh embodiment of the present invention.

Detailed Description

The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.

In order to make the technical personnel in the technical field more clearly understand the scheme of the application, the application scenario of the technical scheme of the application is first described below.

The embodiment is applied to a wireless charging scene, the wireless charging circuit of the embodiment can be arranged in the wireless charging equipment, and the electronic equipment to be charged is used for receiving magnetic field energy emitted by the wireless charging equipment within a preset range of the wireless charging equipment. When wireless charging is performed between the wireless charging device and the electronic device, the Qi protocol of wireless charging is applied, and the Qi protocol specifies that the stage of wireless charging includes: ping phase (start Ping phase), identification and configuration phase, and power transfer phase. When the wireless charging device and the electronic device enter a ping stage, the wireless charging device and the electronic device are indicated to be located in a communicable area, namely a ping starting area. When the wireless charging device and the electronic device are located in the non-communication area, the wireless charging device and the electronic device cannot enter the ping starting area, which is also called a non-realization of the ping starting area, the non-power transmission area and the non-signal strength packet detection area.

The wireless charging standard Qi recommends that the control signal and the charging data are transmitted by in-band communication, and the control signal is carried on the transmission of wireless power, so that the control signal can be transmitted on the premise that the alternating magnetic field generated by the current of the transmitting coil can establish enough induced voltage in the receiving coil to form power transmission. In the Qi protocol, the wireless charging device successfully establishes communication with the electronic device after recognizing the signal strength packet returned by the electronic device in the Ping phase. Wireless connection can be realized between the Wireless charging device and the electronic device through out-of-band communication modes such as Bluetooth (Bluetooth), wireless-broadband (WiFi), zigbee (Zigbee), radio frequency identification (Radio Frequency Identification, RFID), long range (Lora) Wireless technology or near field communication (Near Field Communication, NFC) and the like, so that Wireless communication can be established between the Wireless charging device and the electronic device.

The embodiment of the application is not particularly limited to the type of the electronic device to be charged, and the electronic device may be a mobile phone (mobile phone), a tablet computer (pad), a computer with a wireless transceiver function, an intelligent wearable product (for example, an intelligent watch, an intelligent bracelet, an earphone, etc.), a Virtual Reality (VR) terminal device, an augmented Reality (Augmented Reality, AR) terminal device, etc. with a wireless device. The electronic equipment can also be electronic products such as wireless charging electric automobiles, wireless charging household appliances (such as soymilk machines and sweeping robots), unmanned aerial vehicles and the like.

The communication carrier frequencies when charging different electronic devices are also different, such as a mobile phone with a first communication carrier frequency, a real wireless stereo (True Wireless Stereo, TWS) earphone, a smart watch with a second communication carrier frequency, a fast charging mobile phone with a third communication carrier frequency, and the like. If the same charging equipment is adopted to charge different electronic equipment, different carrier frequencies need to be switched, in the related art, a plurality of complete sets of circuits matched with different electronic equipment are integrated in the same wireless charging equipment, the circuit structure is complex, and different circuits are mutually influenced.

Based on this, the embodiment provides a wireless charging circuit, which can switch charging modes corresponding to electronic equipment according to different models of the electronic equipment, determine a communication carrier frequency matched with the electronic equipment, and realize charging compatibility of different electronic equipment through one wireless charging circuit.

Example 1

Fig. 1 shows a schematic structural diagram of a wireless charging circuit provided in this embodiment, specifically, referring to fig. 1, a wireless charging circuit 100 provided in this embodiment includes a control module 110 and a resonance circuit 120, where the control module 110 communicates with a device to be charged, and is configured to identify a device model of the device to be charged, and generate a driving signal for driving the resonance circuit based on the device model; the charging mode is used for indicating the communication carrier frequency when the equipment to be charged is charged.

In this embodiment, the control module 110 may be a single chip microcomputer control module, or may be an integrated circuit or a chip with a device model identification function and a function of generating a driving signal.

In this embodiment, the charging mode is used to indicate a communication carrier frequency when the device to be charged is charged, for example, the 101 charging mode indicates that the communication carrier frequency in the charging mode is within a first frequency range, where the first frequency range may be 100K to 200K, for example, the 101 charging mode indicates that the communication carrier frequency in the charging mode is 100K or 127K or 128K or 150K or 200K. For example, the 010 charge mode indicates that the communication carrier frequency in the charge mode is within a second frequency range, wherein the second frequency range may be 300K-350K, e.g., the 010 charge mode indicates that the communication carrier frequency in the charge mode is 300K or 325K or 340K or 350K or 200K. For another example, a 001 charging mode indicates that the communication carrier frequency in the charging mode is within a third frequency range, which may be 355K to 500K, e.g., a 001 charging mode indicates that the communication carrier frequency in the charging mode is 355K or 360K or 400K or 450K or 500K. The specific communication carrier frequency may be adapted according to the specific requirements of the charging device.

The charging modes of the to-be-charged devices of each model are one-to-one, and different charging devices can correspond to the same charging mode, and also can correspond to different charging modes, for example, the charging modes of the to-be-charged device of the model A and the charging mode of the to-be-charged device of the model B are 101 charging modes, and the charging mode of the to-be-charged device of the model B is 010 charging mode.

In this embodiment, the resonant circuit 120 is configured to receive a driving signal sent by the control module 110, and switch on a target capacitor device based on the driving signal, so as to form a target resonant circuit corresponding to the charging mode, and charge a device to be charged based on the target resonant circuit.

In a possible example, the resonant circuit 120 includes one or more branches provided with capacitive devices, and by switching on or off the branches, the capacitive devices can be switched on, and the connected capacitive devices can be coupled to obtain different combined capacitance values so as to adapt to different electronic devices to be charged.

In a possible example, the types of the charging modes may be increased or decreased according to the communication carrier frequency required by the electronic device, and the branches provided with the capacitor devices in the resonant circuit may be increased or decreased at the same time, which may be specifically set according to the actual requirements, and is not limited herein.

Fig. 2 shows a schematic circuit structure of a resonant circuit provided in this embodiment, referring to fig. 2, in this embodiment, the resonant circuit 120 includes a transmitting coil 122 and at least one resonant switching circuit 121, the resonant switching circuit 121 includes a switch component 1211 and a resonant capacitor 1212, the switch component 1211 controls the switching-in of the resonant capacitor 1212 based on a driving signal to form a target resonant circuit, and the transmitting coil 122 is used for charging a device to be charged based on the target resonant circuit.

In this embodiment, the transmitting coil 122 is connected to the resonant switching circuit 121, the switch component 1211 may be a MOS transistor, and the control end of the MOS transistor receives the driving signal sent by the control module 110 to control the conduction of the MOS transistor, so as to control the resonant capacitor 1212 connected in series with the switch component to be connected to the circuit. The resonant switching circuit 121 may be one-way, two-way or three-way, and the specific number of resonant switching circuits 121 may be determined according to the type of charging mode required.

In this embodiment, after the resonant capacitor is connected according to the driving signal, a target resonant circuit including one or more resonant switching circuits may be obtained, so as to charge the device to be charged by using the target resonant circuit and the transmitting coil.

Fig. 3 shows a schematic circuit structure of a resonant circuit provided in this embodiment, in order to use different transmission powers, the transmission coil may include one or more transmission coils, and in one example, referring to fig. 3, the transmission coil includes a first transmission coil L1 and a second transmission coil L2, where the first transmission coil L1 and the second transmission coil L2 are stacked, a first end of the first transmission coil L1 and a first end of the second transmission coil L2 are connected to a power supply, and a second end of the first transmission coil L1 and a second end of the second transmission coil L2 are connected to the resonant circuit.

The first transmitting coil L1 and the second transmitting coil L2 may use coils with different thicknesses and different turns to emit different powers. The first end (terminal 2 in fig. 3) of the first transmitting coil L1 and the first end (terminal 4 in fig. 3) of the second transmitting coil L2 are connected to the PWM driving signal through the SW1 end, so that the wireless charging device supplies the transmitting power to the device to be charged.

In the embodiment, the transmitting coil and the SW1 end are also connected with the resistors R7 and C2 to form an EMC absorption circuit, so that interference can be resisted, and the circuit stability is improved.

In the case where the transmitting coil includes the first transmitting coil L1 and the second transmitting coil L2, the resonance switching circuit includes a first resonance switching circuit, a second resonance switching circuit, and a third resonance switching circuit, and at this time, the target resonance circuit includes one or more of the first resonance switching circuit, the second resonance switching circuit, and the third resonance switching circuit, for example, the target resonance circuit includes the first resonance switching circuit and the third resonance switching circuit, or the target resonance circuit includes the second resonance switching circuit.

Referring to fig. 3, the first end of the first resonant switching circuit, the first end of the second resonant switching circuit, and the first end of the third resonant switching circuit are respectively connected to the control module to receive the driving signals c1_sel, c2_sel, and c3_sel transmitted by the control module. The second end of the first resonant switching circuit and the second end of the third resonant switching circuit are connected to the second end of the first transmitting coil L1 (terminal 1 in fig. 3), so that the resonant capacitor of the first resonant switching circuit and/or the resonant capacitor of the third resonant switching circuit can be combined with the first transmitting coil to form an LC resonant circuit, and power transmission is performed through the first transmitting coil, and the second end of the second resonant switching circuit is connected to the second end of the second transmitting coil L2 (terminal 3 in fig. 3), so that the resonant capacitor of the second resonant switching circuit can be combined with the second transmitting coil to form an LC resonant circuit, and power transmission is performed through the second transmitting coil.

Fig. 5 shows another circuit schematic diagram of a resonant circuit provided in this embodiment, referring to fig. 5, in this embodiment, the transmitting coil includes a first transmitting coil L1, the resonant switching circuit includes a first resonant switching circuit, the target resonant circuit includes a first resonant switching circuit, that is, the wireless charging circuit adopts a single-coil circuit, at this time, the resonant circuit further includes a first capacitor C8, the first capacitor C8 is used as a normal-access capacitor, and the access of the capacitor device in the first resonant switching circuit is achieved by controlling the on and off of the switch component in the first resonant switching circuit.

In this embodiment, the first end of the first transmitting coil L1 is connected to the power supply through the SW1 end, the first end of the first resonant switching circuit is connected to the first end of the first capacitor C8, and the second end of the first resonant switching circuit and the second end of the first capacitor C8 are both connected to the second end of the first transmitting coil L1.

It should be noted that, for the wireless charging circuit of the single coil circuit, since the resonance switching circuit thereof includes only one first resonance switching circuit, the charging mode thereof may be represented as a 0 charging mode and a 1 charging mode. Wherein a 0 charge mode may indicate that the communication carrier frequency in the charge mode is within the second frequency range or the third frequency range, e.g., a 0 charge mode may indicate that the communication carrier frequency in the charge mode is 325K or 360K, a 1 charge mode may indicate that the communication carrier frequency in the charge mode is within the first frequency range, e.g., a 1 charge mode may indicate that the communication carrier frequency in the charge mode is 128K.

In this embodiment, fig. 4 is a schematic diagram showing the resonant capacitor structure of the resonant circuit in this embodiment in an example, and referring to fig. 4, the resonant capacitors of the first resonant switching circuit may include a plurality of resonant capacitors, and each resonant capacitor is connected in parallel and then in the first resonant switching circuit. For example, the first resonant switching circuit includes 4 resonant capacitors C3, C4, C5, and C6 connected in parallel, where the resonant capacitors are connected in parallel in the first resonant switching circuit, so that the capacitance can be increased, and the circuit stability can be improved.

In this embodiment, the switch component of the resonant switching circuit is a dual NMOS switch, which has a good voltage stabilizing effect, and has a high power efficiency and a low static power consumption, so that the reliability and stability of the circuit can be improved. Referring to fig. 3, the switch components of the first resonant switching circuit include Q2A, R and U1, the switch components of the second resonant switching circuit include Q3B, R and U2, the switch components of the third resonant switching circuit include Q4B, R and U3, the control module provides on power to the switch components through SW2, SW2 is respectively connected to the drain of Q2A, the drain of Q3B and the drain of Q4B, the source of Q2A is connected to the source of U1, the gate of Q2A is connected to the gate of U1, and the drain of U1 is connected to the resonant capacitors C3, C4, C5 and C6 of the first resonant switching circuit. Similarly, the source of Q3B is connected with the source of U2, the gate of Q3B is connected with the gate of U2, the drain of U2 is connected with the resonance capacitor C7 of the second resonance switching circuit, the source of Q4B is connected with the source of U3, the gate of Q4B is connected with the gate of U3, and the drain of U3 is connected with the resonance capacitor C8 of the third resonance switching circuit.

The grid electrode of the Q2A is used for receiving a driving signal C1_SEL sent by the control module, the grid electrode of the Q3B is used for receiving a driving signal C2_SEL sent by the control module, and the grid electrode of the Q4B is used for receiving a driving signal C3_SEL sent by the control module, so that the on and off of the switch assembly can be controlled through different voltage values of the driving signals.

The third resonant switching circuit of the embodiment is further connected with resistors R10 and C9 to form an EMC absorption circuit, which is resistant to interference and increases circuit stability.

Fig. 6 shows a schematic circuit structure of a control module provided in this embodiment, and referring to fig. 6, in this embodiment, a control module 110 includes a driving source providing module and at least one path of IO conversion circuit, where the driving source providing module is configured to provide a driving source for a switch component of a resonant circuit, and the IO conversion circuit is configured to send a driving signal to the resonant circuit. In this embodiment, the number of IO conversion circuits is the same as the number of resonance switching circuits in the resonance circuit.

For example, in the case where the resonance circuit includes the first resonance switching circuit, the second resonance switching circuit, and the third resonance switching circuit, the control module includes three paths of IO conversion circuits for converting the IO signals sel_c1, sel_c2, sel_c3 into the above-described driving signals c1_sel, c2_sel, c3_sel, respectively. In the case that the resonant circuit includes only the first resonant switching circuit, the control module includes only one path of IO conversion circuit for converting the IO signal sel_c1 into the driving signal c1_sel. The IO signals sel_c1, sel_c2, sel_c3 may be issued by the processor of the control module when detecting the device to be charged.

In this embodiment, the IO conversion circuit includes a voltage stabilizing resistor, a driving switch and a current limiting resistor, where a first end of the voltage stabilizing resistor is connected between an input end of the IO conversion circuit and a first end of the driving switch, a second end of the voltage stabilizing resistor is grounded, a first end of the current limiting resistor is connected to the driving power supply VIN, and a second end of the current limiting resistor is connected between a second end of the driving switch and an output end of the IO conversion circuit.

For example, the IO conversion circuit corresponding to the driving signal c1_sel includes a voltage stabilizing resistor R2, a driving switch Q1A, and a current limiting resistor R1, the IO conversion circuit corresponding to the driving signal c2_sel includes a voltage stabilizing resistor R4, a driving switch Q1B, and a current limiting resistor R3, and the IO conversion circuit corresponding to the driving signal c3_sel includes a voltage stabilizing resistor R6, a driving switch Q2B, and a current limiting resistor R5.

In this embodiment, the voltage stabilizing resistor R2, the voltage stabilizing resistor R4, and the voltage stabilizing resistor R6 have the function of stabilizing the circuit, so that the influence on the output driving signal caused by the unstable signal at the input end of the IO conversion circuit can be reduced.

In this embodiment, when the input end sel_c of the IO conversion circuit is 5V, the driving switch is in an off state, the output c_sel signal is VIN, and when the input end sel_c is 0, the driving switch is turned on, and the c_sel signal is approximately 0.

Therefore, when the control module comprises three paths of IO conversion circuits, if the three paths of IO conversion circuits output high level, low level and high level respectively, the charging mode corresponds to 101, if the three paths of IO conversion circuits output low level, low level and high level respectively, the charging mode corresponds to 001, and if the three paths of IO conversion circuits output low level, high level and low level respectively, the charging mode corresponds to 011, and then the on-off of the three paths of resonance switching circuits can be controlled.

Referring to fig. 6, in this embodiment, the driving source providing module includes a unidirectional conduction diode D1 and a bootstrap capacitor C1, a first end of the unidirectional conduction diode D1 is connected to the first power source Vboost, a second end of the unidirectional conduction diode D1 is connected to the second power source VIN, a first end of the bootstrap capacitor C1 is connected to the second end of the unidirectional conduction diode D1, and a second end of the bootstrap capacitor C1 is connected to the resonant circuit. In this way, when Vboost is input, the bootstrap capacitor C1 may be charged by the unidirectional conduction diode D1, so as to form a bootstrap circuit, and provide a driving source for the switching component of the resonant circuit.

The wireless charging circuit provided in this embodiment is configured to identify a device model of a device to be charged by communicating with the device to be charged through a control module, generate a driving signal for driving the resonant circuit based on the device model, turn on a target capacitor device based on the driving signal through the resonant circuit, form a target resonant circuit corresponding to a charging mode, and charge the device to be charged based on the target resonant circuit. The charging mode is used for indicating the communication carrier frequency when the equipment to be charged is charged, so that the charging mode corresponding to the electronic equipment is switched according to different models of the electronic equipment, the communication carrier frequency matched with the electronic equipment is determined, the charging compatibility of different electronic equipment can be realized through a wireless charging circuit, and the circuit cost is reduced.

Example two

Based on the same concept as the wireless charging circuit, the present embodiment also provides a chip, as shown in fig. 7, and the wireless charging circuit 10 according to any one of the embodiments described above, for example, the circuit shown in fig. 1 is integrated on the chip 60.

Specifically, the chip 60 may be a dedicated chip including the above discrete devices, or may be an MCU integrated chip, as long as the above function of the wireless charging circuit can be achieved.

The chip provided in this embodiment is based on the same concept as the wireless charging circuit, so at least the beneficial effects that the wireless charging circuit can achieve can be achieved, and any implementation of the wireless charging circuit can be applied to the chip provided in this embodiment, which is not described herein.

Example III

Based on the same concept as the wireless charging circuit, the present embodiment also provides a wireless charging device, as shown in fig. 8, in which the wireless charging circuit 10 according to any of the embodiments described above, for example, the circuit shown in fig. 1, is integrated on the wireless charging device 70.

Specifically, the wireless charging device 70 is a wireless charging transmitting terminal, and is capable of identifying a device model of a device to be charged, generating a driving signal for driving the resonant circuit based on the device model, switching on the target capacitor device through the resonant circuit based on the driving signal, forming a target resonant circuit corresponding to a charging mode, and charging the device to be charged based on the target resonant circuit.

The wireless charging device 70 provided in this embodiment is based on the same concept as the wireless charging circuit, so at least the beneficial effects that the wireless charging circuit can achieve can be achieved, and any implementation of the wireless charging circuit can be applied to the wireless charging device provided in this embodiment, which is not described herein.

Example IV

Based on the same concept of the wireless charging circuit, the present embodiment also provides a wireless charging method, which is applied to the wireless charging circuit of the first embodiment, where the execution main body of the first embodiment is a control module, and in one example, the control module may be a single chip microcomputer, an integrated circuit or other control units with processing capability. The control module may be disposed in the wireless charging device.

In this embodiment, referring to fig. 9, the wireless charging method includes the following steps S1 to S2:

s1, receiving a data packet sent by equipment to be charged, and identifying the model of the equipment to be charged according to the data packet.

In this embodiment, the data packet sent by the device to be charged is a Ping data packet, where the Ping data packet includes a model of the device to be charged, and a charging demand power and a maximum power corresponding to the model.

S2, generating a driving signal for driving a resonant circuit in the wireless charging circuit based on the equipment model, wherein the driving signal is used for switching on a target capacitor device to form a target resonant circuit corresponding to a charging mode, and charging equipment to be charged.

The charging mode is used for indicating the communication carrier frequency when the equipment to be charged is charged.

In the case that the transmitting coil of the wireless charging circuit includes a first transmitting coil and a second transmitting coil, the resonance switching circuit includes a first resonance switching circuit, a second resonance switching circuit and a third resonance switching circuit, and the control module includes a three-way IO conversion circuit, the charging mode includes a 101 charging mode, a 001 charging mode and a 010 charging mode, the 101 charging mode indicates that a communication carrier frequency in the charging mode is in a first frequency range, and the first frequency range may be 100K to 200K, for example, the 101 charging mode indicates that the communication carrier frequency in the charging mode is 100K or 127K or 128K or 150K or 200K. For example, the 010 charge mode indicates that the communication carrier frequency in the charge mode is within a second frequency range, wherein the second frequency range may be 300K-350K, e.g., the 010 charge mode indicates that the communication carrier frequency in the charge mode is 300K or 325K or 340K or 350K or 200K. For another example, a 001 charging mode indicates that the communication carrier frequency in the charging mode is within a third frequency range, which may be 355K to 500K, e.g., a 001 charging mode indicates that the communication carrier frequency in the charging mode is 355K or 360K or 400K or 450K or 500K. The specific communication carrier frequency may be adapted according to the specific requirements of the charging device.

The wireless charging method of the present embodiment is described below by way of an example:

in the starting stage of the wireless charging process, an interface of the control module is powered on, a chip sink is electrified to generate a decoy voltage of 5V, the control module can automatically start 101 a charging mode after the verification is completed, foreign matter detection, namely Q value detection, is performed by detecting the power transmission efficiency between the wireless charging equipment and equipment to be charged, for example, after two foreign matter detections, an energy packet is sent at a communication carrier frequency in a first frequency range to start the communication function of the equipment to be charged, the equipment to be charged senses the current energy packet, after the equipment to be charged receives the energy packet, a power supply signal is maintained, information parameters such as the required maximum output power are sent to the wireless charging equipment, the wireless charging equipment enters a power setting stage, the final transmission power is determined through negotiation, and after configuration is completed, the power transmission stage is entered.

The control module detects whether the device to be charged is in the wireless charging field of the wireless charging device by using a detection signal (ping signal) in the ping stage, and uses analog ping (analog ping) and digital ping (digital ping) as the detection signal of the device to be charged based on Qi wireless charging protocol.

For example, taking the communication carrier frequency 127K in the 101 charging mode as an example, after the 101 charging mode is automatically started, the flow of ping detection (hereinafter referred to as flow a) is:

(1) half-bridge drive T1ms 127K 25% duty cycle ping

(2) Stopping PWM transmission T2ms

(3) Half-bridge drive T1ms 127K 50% duty cycle ping

(4) Stopping PWM transmission for T3ms

(5) Half-bridge drive T1ms 127K 25% duty cycle ping

(6) Stopping PWM transmission T2ms

(7) Half-bridge drive T1ms 127K 50% duty cycle ping

(8) Stopping PWM transmission for T3ms

The half-bridge driving T1ms refers to the driving time of the H-bridge driving circuit in the control module to generate the PWM signal, and the values of T1, T2 and T3 may be set according to practical requirements, for example, T1 is 90, T2 is 30, T3 is 70, and 25% and 50% are duty ratios. The control module performs ping detection according to the above flow, and if no ping is performed, that is, no wireless charging device is detected, the following flow of Q value detection from no ping to (the following flow B) is performed:

(1) judging whether the Q Value Q_Value is less than or equal to Q_Min and less than or equal to Q_Max within a preset range, if so, performing the Ping detection flow of the flow A, if Ping is up, executing the flow from Ping to (hereinafter referred to as flow C), if Ping is not up, waiting for T4ms in idle mode, and then switching to another charging mode 010 mode, wherein the Value of T4 can be set according to actual requirements, for example, T4 is 500.

(2) If Q is not in range, then idle waits T4ms before switching to another charging mode 010 mode.

The procedure C from Ping in this embodiment includes:

(1) discriminating Qi 71 command parameters, identifying the machine type of the equipment, and setting a machine type mark

(2) Judging Qi 51 command parameters, and acquiring device required power and maximum power

(3) Stopping PWM transmission for T5s, and entering a wireless charging device power setting stage

If the required power= 5w, the sink voltage remains unchanged

If the required power > = 10w, sink spoofs 9V voltage

The value of T5 may be set according to practical requirements, for example, T5 is 2.5. At this time, the first resonance switching circuit and the third resonance switching circuit are turned on, the target resonance circuit includes the first resonance switching circuit and the third resonance switching circuit, and if the charging mode corresponding to the equipment model of the equipment to be charged is a 001 charging mode, a driving signal corresponding to the 001 charging mode is sent out through the IO switching circuit, at this time, the third resonance switching circuit is turned on, and the target resonance circuit includes the third resonance switching circuit.

(4) Restarting transmission of wireless signals

(5) Performing power negotiation to charge the equipment to be charged

Thus, the 101 charging mode may charge a handset with a communication carrier frequency in a first frequency range and a real wireless stereo (True Wireless Stereo, TWS) headset, and the 001 charging mode may charge a fast-charging handset with a communication carrier frequency in a third frequency range.

In this embodiment, if the self-started charging mode is a 010 charging mode, and the communication carrier frequency 325K in the 010 charging mode is taken as an example, the detection flow (hereinafter referred to as flow D) is:

(1) ping detection

(1) Periodic 200ms transmission of T6ms frequency 325K duty cycle 50% ping

(2) Cyclically send 12 times

(2) ping to

(1) Communication with a smart watch

(2) Normally charge for smart watch

(3) Not ping to

The charging mode is started 101 and the above-described flow a, flow B and flow C are performed.

As such, the 010-charging mode described above may charge a smart watch at communication carrier frequency 325K. The value of T6 may be set according to practical requirements, for example, a period of 200ms, and a transmission period of 120ms.

In the case that the transmitting coil of the wireless charging circuit includes the first transmitting coil, the resonance switching circuit includes the first resonance switching circuit, and the control module includes one path of IO conversion circuit, the charging mode includes a 0 charging mode and a 1 charging mode, where the 0 charging mode may indicate that the communication carrier frequency in the charging mode is within the second frequency range or the third frequency range, for example, the 0 charging mode may indicate that the communication carrier frequency in the charging mode is 325K or 360K, and the 1 charging mode may indicate that the communication carrier frequency in the charging mode is within the first frequency range, for example, the 1 charging mode may indicate that the communication carrier frequency in the charging mode is 128K.

The same principle as the 101 charging mode, the 001 charging mode and the 010 charging mode, when the control module is self-started, the control module may first start the 1 charging mode, execute the ping detection process of the above-mentioned flow a, and if the ping is not completed, that is, the wireless charging device is not detected, execute the Q value detection flow of the following flow E:

(1) judging whether the Q Value Q_Min is less than or equal to Q_Value and less than or equal to Q_Max within a preset range, if so, performing the Ping detection flow of the flow A, if Ping arrives, executing the flow C, identifying the equipment model, performing power matching, conducting a first resonance switching circuit at the moment, and enabling a target resonance circuit to comprise the first resonance switching circuit, wherein if the charging mode corresponding to the equipment model of the equipment to be charged is a 0 charging mode, sending a driving signal corresponding to the 0 charging mode through an IO (input/output) switching circuit, and enabling the first resonance switching circuit to be switched off and enabling the target resonance circuit to comprise a first capacitor. Thus, the 101 charging mode described above may charge a cell phone and a real wireless stereo (True Wireless Stereo, TWS) headset with a communication carrier frequency in a first frequency range.

In this embodiment, if the self-starting charging mode is the 0 charging mode, the communication frequency of the ping data packet sent by the control module is in the second frequency range or the third frequency range, so that the smart watch with the communication carrier frequency 325K can be charged or the fast charging mobile phone with the communication carrier frequency 360K can be charged.

The wireless charging method provided by the embodiment can identify the type of the equipment to be charged through the data packet sent by the equipment to be charged, and generate the driving signal for driving the resonant circuit in the wireless charging circuit based on the equipment type, wherein the driving signal is used for connecting the target capacitor device to form a target resonant circuit corresponding to the charging mode, so as to charge the equipment to be charged; the charging mode is used for indicating the communication carrier frequency when the equipment to be charged is charged, and charging compatibility of different electronic equipment can be achieved through a wireless charging circuit.

Example five

Based on the same concept as the wireless charging method described above, the present embodiment also provides a wireless charging device, and referring to fig. 10, the wireless charging device 90 includes:

the identifying module 901 is used for receiving a data packet sent by equipment to be charged, and identifying the model of the equipment to be charged according to the data packet;

the driving module 902 is configured to generate a driving signal for driving a resonant circuit in the wireless charging circuit based on the device model, where the driving signal is used to turn on a target capacitor device to form a target resonant circuit corresponding to the charging mode, so as to charge the device to be charged; the charging mode is used for indicating the communication carrier frequency when the equipment to be charged is charged.

The wireless charging device provided in this embodiment is based on the same concept as the wireless charging device method, so at least the beneficial effects that the wireless charging method can achieve can be achieved, and any implementation of the wireless charging method can be applied to the wireless charging device provided in this embodiment, which is not described herein.

Example six

Based on the same concept as the wireless charging method, the present embodiment further provides a wireless charging device, and referring to fig. 11, the wireless charging device includes a memory, a processor, and a computer program stored in the memory and capable of running on the processor, where the processor runs the computer program to implement the method described in the fourth embodiment.

Referring to fig. 11, a schematic diagram of a wireless charging device according to some embodiments of the present invention is shown. As shown in fig. 11, the wireless charging device 20 includes: a processor 200, a memory 201, a bus 202 and a communication interface 203, the processor 200, the communication interface 203 and the memory 201 being connected by the bus 202; the memory 201 stores a computer program executable on the processor 200, and the processor 200 executes the method according to any of the foregoing embodiments of the present invention when the computer program is executed.

The memory 201 may include a high-speed random access memory (RAM: random Access Memory), and may further include a non-volatile memory (non-volatile memory), such as at least one disk memory. The communication connection between the system network element and at least one other network element is implemented via at least one communication interface 203 (which may be wired or wireless), the internet, a wide area network, a local network, a metropolitan area network, etc. may be used.

Bus 202 may be an ISA bus, a PCI bus, an EISA bus, or the like. The buses may be classified as address buses, data buses, control buses, etc. The memory 201 is configured to store a program, and the processor 200 executes the program after receiving an execution instruction, and the wireless charging method disclosed in any of the foregoing embodiments of the present invention may be applied to the processor 200 or implemented by the processor 200.

The processor 200 may be an integrated circuit chip with signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in the processor 200 or by instructions in the form of software. The processor 200 may be a general-purpose processor, including a central processing unit (Central Processing Unit, CPU for short), a network processor (Network Processor, NP for short), etc.; but may also be a Digital Signal Processor (DSP), application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be embodied directly in the execution of a hardware decoding processor, or in the execution of a combination of hardware and software modules in a decoding processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in the memory 201, and the processor 200 reads the information in the memory 201, and in combination with its hardware, performs the steps of the above method.

The electronic equipment provided by the embodiment of the invention and the wireless charging method provided by the embodiment of the invention have the same beneficial effects as the method adopted, operated or realized by the electronic equipment and the wireless charging method provided by the embodiment of the invention due to the same inventive concept.

Example seven

Based on the same concept as the wireless charging method described above, the present embodiment also provides a computer-readable storage medium having a computer program stored thereon, the program being executed by a processor to implement the method described in the fourth embodiment.

Referring to fig. 12, a computer readable storage medium is shown as an optical disc 30, on which a computer program (i.e., a program product) is stored, which when executed by a processor, performs the wireless charging method according to any of the foregoing embodiments.

It should be noted that examples of the computer readable storage medium may also include, but are not limited to, a phase change memory (PRAM), a Static Random Access Memory (SRAM), a Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), a Read Only Memory (ROM), an Electrically Erasable Programmable Read Only Memory (EEPROM), a flash memory, or other optical or magnetic storage medium, which will not be described in detail herein.

The computer readable storage medium provided by the above embodiment of the present invention has the same advantageous effects as the method adopted, operated or implemented by the application program stored therein, because of the same inventive concept as the wireless charging method provided by the embodiment of the present invention.

It should be noted that:

in the above text, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present invention is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present invention.

The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, which are merely illustrative, not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are to be protected by the present invention.

Claims

1. A wireless charging circuit is characterized by comprising a control module and a resonance circuit,

the control module is communicated with equipment to be charged, and is used for identifying the equipment model of the equipment to be charged and generating a driving signal for driving the resonant circuit based on the equipment model; each model of equipment to be charged is provided with a charging mode corresponding to each other, and the charging mode is used for indicating the communication carrier frequency when the equipment to be charged is charged;

and the resonant circuit receives the driving signal, turns on a target capacitor device based on the driving signal, forms a target resonant circuit corresponding to the charging mode, and charges the equipment to be charged based on the target resonant circuit.

2. The wireless charging circuit of claim 1, wherein the resonant circuit comprises a transmit coil and at least one resonant switching circuit;

the resonance switching circuit comprises a switch component and a resonance capacitor, and the switch component controls the connection of the resonance capacitor based on the driving signal so as to form the target resonance circuit;

the transmitting coil is used for charging the equipment to be charged based on the target resonant circuit.

3. The wireless charging circuit of claim 2, wherein the wireless charging circuit comprises,

the transmitting coil comprises a first transmitting coil and a second transmitting coil, the first transmitting coil and the second transmitting coil are arranged in a stacked mode, and a first end of the first transmitting coil and a first end of the second transmitting coil are connected with PWM driving signals; the second end of the first transmitting coil and the second end of the second transmitting coil are connected with the resonant circuit.

4. The wireless charging circuit of claim 3, wherein the resonant switching circuit comprises a first resonant switching circuit, a second resonant switching circuit, and a third resonant switching circuit, the target resonant circuit comprising one or more of the first resonant switching circuit, the second resonant switching circuit, and the third resonant switching circuit;

The first end of the first resonant switching circuit, the first end of the second resonant switching circuit and the first end of the third resonant switching circuit are respectively connected with the control module;

the second end of the first resonant switching circuit and the second end of the third resonant switching circuit are connected with the second end of the first transmitting coil, and the second end of the second resonant switching circuit is connected with the second end of the second transmitting coil.

5. The wireless charging circuit of claim 2, wherein the transmit coil comprises a first transmit coil, the resonant switching circuit comprises a first resonant switching circuit, the target resonant circuit comprises the first resonant switching circuit, and the resonant circuit further comprises a first capacitor;

the first end of the first transmitting coil is connected with a PWM driving signal, the first end of the first resonance switching circuit is connected with the first end of the first capacitor, and the second end of the first resonance switching circuit and the second end of the first capacitor are both connected with the second end of the first transmitting coil.

6. The wireless charging circuit of any of claims 3-5, wherein,

the first resonance switching circuit comprises a plurality of resonance capacitors, and each resonance capacitor is connected in parallel and then connected in the first resonance switching circuit.

7. The wireless charging circuit of any of claims 3-5, wherein the switching component of the resonant switching circuit is a dual NMOS switch.

8. The wireless charging circuit of claim 1, wherein the control module comprises a drive source providing module and at least one path of IO conversion circuit;

the driving source providing module is used for providing a driving source for a switch assembly of the resonant circuit;

the IO conversion circuit is used for sending the driving signal to the resonance circuit.

9. The wireless charging circuit of claim 8, wherein the battery charger is configured to receive the battery charger,

the number of the IO conversion circuits is the same as the number of the resonance switching circuits in the resonance circuit.

10. The wireless charging circuit of claim 8, wherein the battery charger is configured to receive the battery charger,

the driving source providing module comprises a unidirectional conduction diode and a bootstrap capacitor, wherein a first end of the unidirectional conduction diode is connected with a first power supply, a second end of the unidirectional conduction diode is connected with a second power supply, a first end of the bootstrap capacitor is connected with a second end of the unidirectional conduction diode, and a second end of the bootstrap capacitor is connected with the resonant circuit.

11. The wireless charging circuit of claim 8, wherein the battery charger is configured to receive the battery charger,

The IO conversion circuit comprises a voltage stabilizing resistor, a driving switch and a current limiting resistor, wherein a first end of the voltage stabilizing resistor is connected between an input end of the IO conversion circuit and a first end of the driving switch, and a second end of the voltage stabilizing resistor is grounded;

the first end of the current limiting resistor is connected to a driving power supply, and the second end of the current limiting resistor is connected between the second end of the driving switch and the output end of the IO conversion circuit.

12. A chip, comprising: the wireless charging circuit of any one of claims 1-11.

13. A wireless charging device, comprising: the wireless charging circuit of any one of claims 1-11.

14. A wireless charging method applied to the wireless charging circuit of any one of claims 1-11, the method comprising:

receiving a data packet sent by equipment to be charged, and identifying the model of the equipment to be charged according to the data packet;

generating a driving signal for driving a resonant circuit in the wireless charging circuit based on the equipment model, wherein the driving signal is used for switching on a target capacitor device to form a target resonant circuit corresponding to the charging mode, and charging the equipment to be charged; the charging mode is used for indicating the communication carrier frequency when the equipment to be charged is charged.

15. A wireless charging apparatus, the apparatus comprising:

the identification module is used for receiving a data packet sent by the equipment to be charged and identifying the model of the equipment to be charged according to the data packet;

the driving module is used for generating a driving signal for driving the resonant circuit in the wireless charging circuit based on the equipment model, wherein the driving signal is used for switching on a target capacitor device to form a target resonant circuit corresponding to the charging mode, and charging the equipment to be charged; the charging mode is used for indicating the communication carrier frequency when the equipment to be charged is charged.

16. A wireless charging device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor running the computer program to implement the wireless charging method of claim 14.

17. A computer-readable storage medium having stored thereon a computer program, wherein the program is executed by a processor to implement the wireless charging method of claim 14.