A wireless charging method, device, terminal and storage medium

Abstract

The present disclosure provides a wireless charging device, method, terminal and storage medium, wherein the wireless charging device is applied to a first terminal, and comprises: the wireless charging device comprises: a charging circuit, a Q value detection module and a control module for detecting a quality factor Q value, wherein the charging circuit comprises: a coil; the Q value detection module comprises: a detection circuit connected to the coil, and used to detect a discharge parameter on the coil for determining the Q value when the charging circuit transmits a wireless signal; the control module is connected to the output end of the detection circuit, and is used to determine the wireless charging state entered by the first terminal based on the discharge parameter. The wireless charging device provided by the embodiment of the present disclosure does not need to manually turn on the wireless charging state, thereby improving the user's experience satisfaction and enhancing the intelligence of the first terminal. In addition, the safety of wireless charging can be improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of wireless charging, and in particular to a wireless charging method, device, terminal and storage medium. Background Art

[0002] With the efforts of wireless charging technology manufacturers and coil manufacturers, more and more smart devices, including many wearable devices and mobile smart terminals, are beginning to use wireless charging technology. In terms of the market, the Wireless Power Consortium (WPC) has been widely used.

[0003] When a smart device is wirelessly charged, the smart device also supports wireless reverse charging technology; for example, a mobile phone is wirelessly charged, and the mobile phone can also wirelessly reverse charge other smart devices such as watches and headphones. Currently, the smart device is usually wirelessly reverse charged or wirelessly forward charged by turning on a quick switch or setting item for wireless reverse charging in the user interface of the smart device; however, this method requires the user to turn on a quick switch or setting item, which brings great inconvenience to the user and is less intelligent. Summary of the invention

[0004] The present disclosure provides a wireless charging method, device, terminal and storage medium.

[0005] According to a first aspect of an embodiment of the present disclosure, a wireless charging device is provided, which is applied to a first terminal. The wireless charging device includes: a charging circuit, a Q value detection module for quality factor Q value detection, and a control module, wherein:

[0006] The charging circuit comprises: a coil;

[0007] The Q value detection module includes: a detection circuit connected to the coil, used to detect a discharge parameter on the coil for determining the Q value when the charging circuit transmits a wireless signal;

[0008] The control module is connected to the output end of the detection circuit, and is used to determine the wireless charging state entered by the first terminal based on the discharge parameter.

[0009] In the above solution, the wireless charging state includes: a wireless reverse charging state or a wireless forward charging state;

[0010] Wherein, in the wireless reverse charging state, the first terminal sends a wireless signal for discharging; in the wireless forward charging state, the first terminal receives a wireless signal for charging.

[0011] In the above solution, the wireless charging device further includes:

[0012] A control module, connected to the Q value detection module, used to send an enable signal to enable the Q value detection module;

[0013] The Q value detection module is used to enter a working state of detecting the discharge parameter when enabled by the enable signal.

[0014] In the above solution, the detection circuit includes: at least one switch tube; the switch tube is connected to the coil;

[0015] The control module is connected to the switch tube, and is used to control sending a first control signal to the switch tube to control the switch tube to be turned on, or to send a second control signal to the switch tube to control the switch tube to be turned off;

[0016] The Q value detection module is used to, after entering the working state, work in a first working period of detecting the discharge parameter on the coil when the switch tube is turned off; or, when the switch tube is turned on, work in a second working period of stopping detecting the discharge parameter on the coil.

[0017] The above scheme also includes:

[0018] A conversion circuit, connected to the output end of the detection circuit, for determining a Q value according to the discharge parameter;

[0019] The control module is connected to the output end of the conversion circuit, and is used to determine the wireless charging state entered by the first terminal based on the Q value.

[0020] According to a second aspect of an embodiment of the present disclosure, a wireless charging method is provided, which is applied to a first terminal, wherein the first terminal includes a charging circuit and a Q value detection module for quality factor Q value detection, wherein the charging circuit includes: a coil; the method includes:

[0021] Acquire the Q value detection module to detect a discharge parameter on the coil for determining the Q value when the charging circuit sends a wireless signal;

[0022] Based on the discharge parameter, determine the wireless charging state that the first terminal enters.

[0023] In the above solution, the wireless charging state includes: a wireless reverse charging state or a wireless forward charging state;

[0024] Wherein, in the wireless reverse charging state, the first terminal sends a wireless signal for discharging; in the wireless forward charging state, the first terminal receives a wireless signal for charging.

[0025] In the above scheme, the method further includes:

[0026] Generate an enable signal for enabling the Q value detection module; wherein the enable signal is used to trigger the Q value detection module to enter a working state for detecting the discharge parameter.

[0027] In the above scheme, the method further includes:

[0028] generating a first control signal;

[0029] Based on the first control signal, controlling the switch tube of the Q value detection module to be turned off, so that the Q value detection module entering the working state works in the first working period for detecting the discharge parameter on the coil;

[0030] or,

[0031] generating a second control signal;

[0032] Based on the second control signal, the switch tube is controlled to be turned on, so that the Q value detection module that enters the working state works in the second working period in which the detection of the discharge parameter on the coil is stopped.

[0033] In the above solution, determining the wireless charging state entered by the first terminal based on the discharge parameter includes:

[0034] In response to the Q value detection module being in the first working period and the detected discharge parameter being greater than a first voltage threshold, it is determined that the first terminal enters the wireless forward charging state.

[0035] In the above solution, in response to the Q value detection module being in the first working period and the detected discharge parameter being greater than the first voltage threshold, determining that the first terminal enters the wireless forward charging state includes:

[0036] In response to the Q value detection module being in the first working period and the detected discharge parameter being greater than a second voltage threshold, determining that the Q value detection module enters the second working period; wherein the second voltage threshold is greater than the first voltage threshold;

[0037] If the Q value detection module receives a first detection signal sent by a second terminal when the Q value detection module is in the second working period, it is determined that the first terminal enters the wireless forward charging state;

[0038] or,

[0039] In response to the Q value detection module being in the first working period and the detected discharge parameter being between the first voltage threshold and the second voltage threshold, determining that the Q value detection module enters the second working period after the first working period ends;

[0040] If the Q value detection module is in the second working period and receives a first detection signal sent by a second terminal, it is determined that the first terminal enters the wireless forward charging state.

[0041] In the above solution, determining the wireless charging state entered by the first terminal based on the discharge parameter includes:

[0042] In response to the Q value detection module being in the first working period and detecting that the discharge parameter is less than the first voltage threshold, determining a Q value based on the discharge parameter;

[0043] Based on the Q value, the wireless charging state entered by the first terminal is determined.

[0044] In the above solution, determining the wireless charging state entered by the first terminal based on the Q value includes:

[0045] In response to the Q value being between a first Q threshold and a second Q threshold, it is determined that the first terminal enters the wireless reverse charging state; wherein the second Q threshold is greater than the first Q threshold.

[0046] In the above scheme, the method further comprises:

[0047] sending a second detection signal;

[0048] In response to not receiving a response signal sent by the third terminal based on the second detection signal within a predetermined time, determining that the first terminal exits the wireless reverse charging state, and controlling the Q value detection module to enter the second working period.

[0049] In the above solution, determining the wireless charging state entered by the first terminal based on the Q value includes:

[0050] In response to the Q value being less than a first Q threshold, determining that the Q value detection module enters a second working period;

[0051] or,

[0052] In response to the Q value being greater than a second Q threshold, determining that the Q value detection module enters the second working period after the first working period ends; wherein the second Q threshold is greater than the first Q threshold;

[0053] If the Q value detection module is in the second working period and receives a first detection signal sent by a second terminal, it is determined that the first terminal enters the wireless forward charging state.

[0054] In the above scheme, the method further includes:

[0055] In response to the Q value detection module being in the second working period and receiving a first detection signal sent by a second terminal, it is determined that the first terminal enters the wireless forward charging state.

[0056] According to a third aspect of an embodiment of the present disclosure, a terminal is provided, including:

[0057] processor;

[0058] a memory for storing processor-executable instructions;

[0059] Wherein, the processor is configured to: implement the wireless charging method described in any embodiment of the present disclosure when executing the executable instructions.

[0060] According to a fourth aspect of an embodiment of the present disclosure, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores an executable program, wherein when the executable program is executed by a processor, the wireless charging method described in any embodiment of the present disclosure is implemented.

[0061] The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects:

[0062] In an embodiment of the present disclosure, a wireless charging device is provided, and the wireless charging device includes: a charging circuit, a Q value detection module for quality factor Q value detection, and a control module, wherein the charging circuit includes: a coil; the Q value detection module includes: a detection circuit connected to the coil, and used to detect the discharge parameter on the coil for determining the Q value when the charging circuit transmits a wireless signal; the control module is connected to the output end of the detection circuit, and is used to determine the wireless charging state entered by the first terminal based on the discharge parameter. In this way, in the embodiment of the present disclosure, the corresponding wireless charging state can be automatically entered according to the discharge parameter on the coil detected by the Q value detection module; in this way, there is no need to manually turn on the wireless charging state, which can facilitate users, improve user experience satisfaction, and enhance the intelligence of the first terminal.

[0063] Furthermore, since the discharge parameter is obtained by directly detecting the coil through a Q value detection module connected to the coil, the accuracy of detecting the discharge parameter can be improved, thereby accurately determining the current wireless forward charging or reverse charging state of the first terminal, thereby improving the safety of wireless charging.

[0064] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0066] Figure 1 The figure is a schematic diagram showing a user interface of a wireless charging device according to an exemplary embodiment.

[0067] Figure 2 is a block diagram of a wireless charging device according to an exemplary embodiment.

[0068] Figure 3 is a block diagram of a wireless charging device according to an exemplary embodiment.

[0069] Figure 4 The figure is an example diagram showing a working sequence of a wireless charging device according to an exemplary embodiment.

[0070] Figure 5 is a block diagram of a wireless charging device according to an exemplary embodiment.

[0071] Figure 6 is a block diagram of a wireless charging device according to an exemplary embodiment.

[0072] Figure 7 is a block diagram of a wireless charging device according to an exemplary embodiment.

[0073] Figure 8 is a block diagram of a wireless charging device according to an exemplary embodiment.

[0074] Fig. 9 The figure is a flow chart of a wireless charging method according to an exemplary embodiment.

[0075] Fig.10 The figure is a flow chart of a wireless charging method according to an exemplary embodiment.

[0076] Fig.11 The figure is a flow chart of a wireless charging method according to an exemplary embodiment.

[0077] Fig.12 The figure is a flow chart of a wireless charging method according to an exemplary embodiment.

[0078] Fig.13 The present invention is a flow chart showing a terminal including a wireless charging device according to an exemplary embodiment. DETAILED DESCRIPTION

[0079] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0080] like Figure 1 As shown, a schematic diagram of a user interface UI of a wireless charging device is disclosed; the option of "wireless reverse charging" is displayed on the UI. Generally, when the wireless charging device is used as a transmitting end, the user can click the option of "wireless reverse charging" to start the reverse charging function of the wireless charging device. At this time, the wireless charging device can transmit wireless signals to power other receiving devices. When the wireless charging device is used as a receiving end, the user can click the option of "wireless reverse charging" again to turn off the reverse charging function of the wireless charging device and start the forward charging function of the wireless charging device. At this time, the wireless charging device can receive wireless signals to power itself.

[0081] However, this method of enabling wireless reverse charging requires manual operation by the user, and the user experience is not high.

[0082] Based on this, the embodiments of the present disclosure provide a wireless charging device and method, which can automatically enter the wireless charging state of wireless reverse charging or wireless forward charging; in this way, the user experience satisfaction and the intelligence of the electronic device can be improved.

[0083] like Figure 2 As shown, the embodiment of the present disclosure provides a wireless charging device, which is applied to a first terminal. The wireless charging device includes: a charging circuit 11, a Q value detection module 12 for quality factor Q value detection, and a control module 13, wherein:

[0084] The charging circuit 11 includes: a coil 111;

[0085] The Q value detection module 12 includes: a detection circuit 121 connected to the coil 111, and used to detect a discharge parameter on the coil 111 for determining the Q value when the charging circuit 11 transmits a wireless signal;

[0086] The control module 13 is connected to the output end of the detection circuit 121 and is used to determine the wireless charging state entered by the first terminal based on the discharge parameter.

[0087] Here, the first terminal may be any electronic device that can receive radio frequency signals. For example, the first terminal includes but is not limited to mobile terminals such as mobile phones, tablet computers, or wearable devices, and may also be other fixed devices that can receive wireless charging.

[0088] Here, the first terminal may be a transmitting end of a wireless charging device or a receiving end of a wireless charging device. When the first terminal is the transmitting end, the coil generates electromagnetic induction for transmitting wireless signals; when the first terminal is the receiving end, the coil generates electromagnetic induction for receiving wireless signals.

[0089] Here, the wireless charging state includes: a wireless reverse charging state or a wireless forward charging state;

[0090] Wherein, in the wireless reverse charging state, the first terminal sends a wireless signal for discharging; in the wireless forward charging state, the first terminal receives a wireless signal for charging.

[0091] It is understandable that in the wireless reverse charging state, the first terminal will send a wireless signal. However, when the first terminal sends a wireless signal, the first terminal is not necessarily in the wireless reverse charging state, and the first terminal may be in the Q value detection stage. For example, the first terminal uses an external power supply, such as a 5V first power supply, to power the charging circuit so that the charging circuit coil sends a wireless signal; at this time, the first terminal does not enter the wireless reverse charging state, but uses the Q value detection module to detect the discharge parameters used to determine the Q value.

[0092] Here, the wireless reverse charging state includes at least: a Ping signal stage and a power transmission stage. In both the Ping signal stage and the power transmission stage, the coil may send a wireless signal; however, only in the power transmission stage, the coil of the first terminal sends a wireless signal to charge the receiving end (e.g., the second terminal)

[0093] Thus, in the embodiment of the present disclosure, it is possible to automatically switch between the wireless reverse charging state or the wireless forward charging state based on the discharge parameter.

[0094] In the disclosed embodiment, the control module is connected to the output end of the detection circuit in the Q value detection module, and the output end of the detection circuit is a connection point in the Q value detection module and is different from the output end of the Q value detection module. Here, the output end of the Q value detection module outputs the Q value.

[0095] In some embodiments, the control module is further connected to the output end of the Q value detection module, and the Q value detection module outputs the Q value. The output end of the detection circuit outputs the discharge parameter for determining the Q value.

[0096] Thus, in the embodiment of the present disclosure, the detection circuit for detecting the discharge parameter can be a detection circuit for detecting the Q value by the Q value detection module, that is, the embodiment of the present disclosure can reuse the discharge parameter detected by the Q value detection module to determine the wireless charging state. Thus, when the embodiment of the present disclosure detects the discharge parameter, it is unnecessary to introduce other detection circuits, which simplifies the structure of the wireless charging device and facilitates the realization of lightweight electronic equipment.

[0097] In one embodiment, the charging circuit may further include: a resonant capacitor Cs.

[0098] For example, Figure 3 As shown, the charging circuit 11 includes: a resonant subcircuit 110, and the resonant subcircuit 110 includes: a coil Ls and a resonant capacitor Cs, and the resonant capacitor Cs is connected in series with the coil Ls;

[0099] The Q value detection module 12 is connected to the resonant subcircuit 110 and is used to detect the discharge parameters on the coil for determining the Q value when the charging circuit transmits a wireless signal.

[0100] Thus, in practical applications, if the coil and the resonant capacitor are integrated into one chip, when the Q value detection module is used to detect the discharge parameters on the coil, it can be directly connected to the resonant subcircuit for detection without the need to add additional wires to connect to the coil for detection.

[0101] Of course, in other embodiments, the resonant capacitor Cs may not be included in the charging circuit, and may be connected between the coil and the Q value detection module as an independent module.

[0102] Here, the control module usually controls the overall operation of the wireless charging device, for example, controls whether the switch tube is turned on or off, controls the Q value detection module to enter the working state, etc. The control module may include one or more processors to execute instructions to complete corresponding operations.

[0103] Here, the control module may also be a control circuit with signal processing capability; the control circuit may include a control chip or a controller, etc.

[0104] In one embodiment, the discharge parameter is a voltage value. Here, the detection circuit includes at least one component for detecting voltage, such as a voltmeter.

[0105] Of course, in other embodiments, the discharge parameter may be a current value, etc.

[0106] Here, since the discharge parameter on the coil can be calculated, it is possible to determine whether the wireless charging device has a wireless charging device transmitter discharging to it, and thus it is possible to determine whether it is necessary to enter the wireless reverse charging state or the wireless forward charging state according to the size of the discharge parameter. Here, the wireless charging device transmitter is the second terminal in the subsequent embodiments.

[0107] In the disclosed embodiment, the discharge parameters on the coil can be directly detected according to the Q value detection module, and the corresponding wireless charging state can be automatically entered; in this way, there is no need to manually turn on the wireless charging state, which can facilitate users, improve user experience satisfaction, and enhance the intelligence of the first terminal.

[0108] Since the discharge parameter is obtained by directly detecting the coil through a Q value detection module connected to the coil, the accuracy of detecting the discharge parameter can be improved, so that the current wireless forward charging or reverse charging state of the first terminal can be accurately determined, thereby improving the safety of wireless charging.

[0109] In some embodiments, the control module 13 is connected to the Q value detection module 12 and is used to send an enable signal to enable the Q value detection module 12;

[0110] The Q value detection module 12 is used to enter a working state of detecting the discharge parameter when enabled by the enable signal.

[0111] In some other embodiments, the control module 13 is further used to send a disabling signal to the Q value detection module;

[0112] The Q value detection module 12 is used to exit the detection of the working state under the action of the disabling signal.

[0113] In the embodiment of the present disclosure, the control module sends an enable signal to the enable end of the Q value detection module, the enable end is activated by the enable signal, and the Q value detection module enters the working state; or,

[0114] The control module sends a disabling signal to the enabling end of the Q value detection module, and the enabling end is disabled by the disabling signal, so that the Q value detection module stops working.

[0115] Thus, in the disclosed embodiment, an enable signal is sent to trigger the Q value module to be activated and enter the working state only when the Q value detection module needs to work; thus, the Q value detection module is not always in the working state, which can save the power consumption of the wireless charging device.

[0116] In some application scenarios, when the Q value detection module enters the working state based on the enable signal, it does not always work to detect the discharge parameter of the coil in the charging circuit; the discharge parameter of the coil is detected only when the coil transmits a wireless signal. For example, in one embodiment, when the Q value detection module enters the working state, the working state can be divided into a first working period T_Q and a second working period T_RX.

[0117] Exemplarily, the control module may control the Q value detection module to poll in the first working period T_Q and the second working period T_RX. The working timing of T_Q and T_RX may be as follows: Figure 4 shown.

[0118] Here, the control module controls the Q value detection module to work at the T_Q or the T_RX after entering the working state, which can be achieved by controlling the switch tube.

[0119] For example, Figure 5 As shown, in some embodiments, the detection circuit 121 includes at least one switch tube 1211 connected to the coil 111;

[0120] The control module 13 is connected to the switch tube 1211, and is used to control sending a first control signal to the switch tube 1211 to control the switch tube 1211 to be turned on, or to send a second control signal to the switch tube 1211 to control the switch tube 1211 to be turned off;

[0121] The Q value detection module 12 is used to, after entering the working state, work in the first working period of detecting the discharge parameter on the coil 111 when the switch tube 1211 is turned off; or, when the switch tube 1211 is turned on, work in the second working period of stopping detecting the discharge parameter on the coil 111.

[0122] In practical applications, there may be two switch tubes, such as Figure 6 As shown, the wireless charging device further includes a first power source 14;

[0123] The charging circuit further includes: a resonant capacitor Cs; the resonant capacitor Cs is connected to the coil 111;

[0124] The detection circuit 121 includes two switch tubes 1211 ; one of the switch tubes 1211 is connected between the resonant capacitor Cs and the first power supply 14 ; one end of the other switch tube 1211 is connected to the coil 111 , and the other end is grounded;

[0125] The control module 13 is also connected to the two switch tubes 1211, and is used to send a first control signal to the switch tubes 1211 to control the switch tubes 1211 to be turned on, or send a second control signal to the switch tubes 1211 to control the switch tubes 1211 to be turned off;

[0126] When the switch tube 1211 is turned on, the first power supply supplies power to the resonant capacitor Cs; when the switch tube 1211 is turned off, the coil 111 transmits a wireless signal based on the discharge of the resonant capacitor Cs;

[0127] The Q value detection module 12 is used to detect the discharge parameter of the wireless signal transmitted by the coil 111 when the switch tube 1211 is turned off after entering the working state; or, when the switch tube 1211 is turned on, stop detecting the discharge parameter of the coil 111.

[0128] Here, the first power supply 14 is used to supply power to the charging circuit when the Q value detection module enters the working state. In one embodiment, the first power supply is a 5V power supply.

[0129] Here, the resonant capacitor Cs can be connected at any position between the coil and the switch tube. Figure 6 As shown, the resonant capacitor Cs can also be located at D1, D2 or D3 outside the charging circuit 11; as long as the resonant capacitor meets the requirements, it can be charged based on the power supply of the first power supply when the switch tube 1211 is turned on, and can oscillate freely with the coil Ls when the switch tube 1211 is turned off.

[0130] Here, the switch tube may be any component with a turn-on or turn-off function. For example, the switch tube may be a metal-oxide-semiconductor field-effect transistor (MOSFET).

[0131] Here, the two MOSFETs are in the detection circuit. In other embodiments, Figure 3 As shown, the two MOSFET tubes can also be outside the detection circuit as an independent module.

[0132] In the disclosed embodiment, the control module can be used to control whether the switch tube is turned on or off, so that the Q value detection module in the automatic working state enters different working time periods, thereby determining whether to detect the discharge parameters on the coil based on different time periods.

[0133] like Figure 7As shown, in some embodiments, the Q value detection module 12 further includes:

[0134] A conversion circuit 122, connected to the output end of the detection circuit 121, for determining a Q value according to the discharge parameter;

[0135] The control module 13 is connected to the output end of the conversion circuit 122, and is used to determine the wireless charging state entered by the first terminal based on the Q value.

[0136] The output end of the conversion circuit here can be used as the output end of the Q value detection module.

[0137] Here, the conversion circuit can detect the discharge parameters and determine the Q value.

[0138] Here, a method for determining the Q value based on the discharge parameters is provided. For example, in the second time period, the first voltage value Vth1 on the coil at the first moment T1 and the second voltage value Vth2 on the coil at the second moment T2 are collected; the time interval ΔT=T2-T1 between time T1 and T2 is calculated; and Calculate Among them, the Then through Calculate Wherein, W is the operating frequency; L is the coil inductance; and R is the resistance of the object placed on the first terminal.

[0139] In practical applications, it is difficult to know whether a foreign object, a receiving device that can receive wireless signals, or other objects is placed on the first terminal, and it is difficult to know the impedance of R and the inductive reactance of L, so it is impossible to Accurately obtain the Q value.

[0140] Here, based on the size of the Q value, it can be determined whether there are foreign objects or receiving devices that receive wireless signals on the current wireless charging device, and based on this, it can be determined whether to enter the wireless reverse charging state or the wireless forward charging state.

[0141] In the disclosed embodiment, the Q value can be determined directly through the discharge parameters without considering the inductive reactance of different coils on the wireless charging device or the impedance of other objects, so that the Q value can be accurately determined. Since the accuracy of detecting the Q value is improved, the accuracy of the wireless charging state to be entered based on the Q value can also be improved, thereby improving the safety of wireless charging.

[0142] The following provides a specific example of a wireless charging device in combination with any of the above wireless charging device embodiments, such as Figure 8 As shown, the wireless charging device comprises:

[0143] Charging circuit 11, Q value detection module 12, control module 13, first power supply 14, communication module 15, second power supply 16, rectifier circuit 17; wherein,

[0144] The charging circuit 11 includes: a resonant subcircuit 110; the resonant subcircuit 110 includes: a coil Ls and a resonant capacitor Cs; the charging circuit 11 is connected to the rectifier circuit 17;

[0145] The rectifier circuit 17 is connected between the charging circuit 11 and the second power source 16; the rectifier circuit includes a third switch tube Q3, a fourth switch tube Q4, a fifth switch tube Q5 and a sixth switch tube Q6;

[0146] The Q value detection module 12 includes: a detection circuit 121 and a conversion circuit 122; wherein the detection circuit 121 includes: a first switch tube Q1 and a second switch tube Q2; the input end of the detection circuit 121 is connected to the resonant subcircuit 110, and the output end of the detection circuit 121 is connected to the conversion circuit 122; wherein the first switch tube Q1 is connected between the resonant capacitor Cs and the first power supply 16; one end of the second switch tube Q2 is connected to the coil Ls, and the other end is grounded;

[0147] The control module 13 is connected to the first switch tube Q1 and the second switch tube Q2 respectively; the control module is also connected to the enable end of the Q value detection module 12 and the output end of the conversion circuit 122 respectively;

[0148] The communication module 16 is connected to the control module 13 .

[0149] Here, when the wireless charging device is in a forward charging state, the charging circuit receives a wireless signal, and the rectifier circuit converts the AC signal into a DC signal to supply power to the second power supply; when the wireless charging device is in a reverse charging state, the rectifier circuit converts the DC signal provided by the second power supply into an AC signal, which is then discharged by transmitting a wireless signal to the outside through the charging circuit.

[0150] Here, the Q value detection module is used to collect the discharge parameters on the coil when the charging circuit transmits a wireless signal; or, is suitable for collecting the discharge parameters on the coil when the charging circuit transmits a wireless signal, and determining the Q value based on the discharge parameters.

[0151] Here, the control module is used to control the overall operation of the wireless charging device. For example, the control module is used to control the on and off of the first switch tube and the second switch tube, or to control the Q value detection module to enter a working state or exit a working state.

[0152] Here, Q3, Q4, Q5 and Q6 of the rectifier circuit can all be MOS tubes; wherein the rectifier circuit of Q3, Q4, Q5 and Q6 constitutes a full-bridge rectifier circuit.

[0153] In one embodiment, the control module is an MCU module.

[0154] Here, the communication module can be used for the first terminal to communicate with the second terminal or the third terminal; wherein the second terminal is a terminal that transmits a line signal to the first terminal for charging the first terminal; and the third terminal is a terminal that receives a wireless signal transmitted by the first terminal for charging itself. For example, the communication module sends a detection signal to the third terminal, or receives a response signal returned by the third terminal based on the detection signal. Here, the first terminal can determine the type of wireless charging protocol of the third terminal based on the response signal.

[0155] In one embodiment, the rectifier circuit and the second power supply further include: at least one MOS tube for adjusting the output voltage of the rectifier circuit. Figure 8 Q7 shown in .

[0156] In one embodiment, the wireless charging device further comprises an internal power supply module, and the internal power supply module is used to supply power to each module or circuit of the wireless charging device. Of course, in other embodiments, each module or circuit of the wireless charging device may also be supplied with power by an external power supply.

[0157] In the disclosed embodiment, the wireless charging state entered by the first terminal can be determined based on the discharge parameter on the detection coil of the Q value detection module; or the wireless charging state entered by the first terminal can be determined based on the Q value determined by the discharge parameter on the detection coil of the Q value detection module. In this way, on the one hand, automatic entry into the wireless charging state can be achieved without manual operation, which can improve user satisfaction and the intelligence of electronic devices; on the other hand, the accuracy of entering the wireless charging state can be improved, thereby improving the safety of wireless charging.

[0158] It should be noted here that the following description of a wireless charging method corresponds to the description of the above-mentioned wireless charging device. For technical details not disclosed in the wireless charging method embodiment of the present disclosure, please refer to the description of the wireless charging device embodiment described in the present disclosure, and no detailed explanation is given here.

[0159] Fig. 9 is a flow chart of a wireless charging method according to an exemplary embodiment. Fig. 9 As shown, the method comprises the following steps:

[0160] Step S31: acquiring the discharge parameter for determining the Q value on the coil detected by the Q value detection module when the charging circuit sends a wireless signal;

[0161] Step S32: Based on the discharge parameter, determine the wireless charging state that the first terminal enters.

[0162] The wireless charging method provided in the embodiment of the present disclosure is applied to a first terminal; wherein the first terminal includes a charging circuit and a Q value detection module for quality factor Q value detection, and the charging circuit includes: a coil.

[0163] Here, the first terminal may be a transmitting end of a wireless charging device or a receiving end of a wireless charging device. When the first terminal is the transmitting end, the coil generates electromagnetic induction for transmitting wireless signals; when the first terminal is the receiving end, the coil generates electromagnetic induction for receiving wireless signals.

[0164] Here, the wireless charging state includes: a wireless reverse charging state or a wireless forward charging state;

[0165] Wherein, in the wireless reverse charging state, the first terminal sends a wireless signal for discharging; in the wireless forward charging state, the first terminal receives a wireless signal for charging.

[0166] Thus, in the embodiment of the present disclosure, it is possible to automatically switch between the wireless reverse charging state or the wireless forward charging state based on the discharge parameter.

[0167] Here, since the discharge parameter on the coil can be calculated, it is possible to determine whether there are other devices within a predetermined range of the first terminal discharging to it, and thus determine whether it is necessary to enter the wireless reverse charging state or the wireless forward charging state based on the size of the discharge parameter.

[0168] In the disclosed embodiment, the discharge parameters on the coil can be directly detected according to the Q value detection module, and the corresponding wireless charging state can be automatically entered; in this way, there is no need to manually turn on the wireless charging state, which can facilitate users, improve user experience satisfaction, and enhance the intelligence of the first terminal.

[0169] Furthermore, since the discharge parameters on the coil can be detected by the Q value detection module connected to the coil to determine the wireless charging state entered by the first terminal, the current charging or discharging state of the first terminal can be accurately determined, thereby improving the safety of wireless charging.

[0170] In some embodiments, the method further comprises:

[0171] Generate an enable signal for enabling the Q value detection module; wherein the enable signal is used to trigger the Q value detection module to enter a working state for detecting the discharge parameter.

[0172] In some other embodiments, the method further comprises:

[0173] Generate a disable signal; wherein, the disable signal is used to trigger the Q value detection module to exit the working state of detecting the discharge parameter.

[0174] In this way, in the embodiment of the present disclosure, the Q value detection module is not always in the working state of detecting the discharge parameters, which can save the power consumption of the wireless charging device.

[0175] In some application scenarios, when the Q value detection module enters the working state based on the enable signal, it does not always work to detect the discharge parameter of the coil in the charging circuit; the discharge parameter of the coil is detected only when the coil transmits a wireless signal. For example, in one embodiment, when the Q value detection module enters the working state, the working state can be divided into a first working period T_Q and a second working period T_RX.

[0176] Here, a control signal can be used to control the working state of the Q value detection module.

[0177] For example, in one embodiment, the method further includes:

[0178] generating a first control signal;

[0179] Based on the first control signal, controlling the switch tube of the Q value detection module to be turned off, so that the Q value detection module entering the working state works in the first working period for detecting the discharge parameter on the coil;

[0180] or,

[0181] generating a second control signal;

[0182] Based on the second control signal, the switch tube is controlled to be turned on, so that the Q value detection module that enters the working state works in the second working period in which the detection of the discharge parameter on the coil is stopped.

[0183] In the embodiment of the present disclosure, the state of the switch tube can be controlled by the control module to control the Q value detection module to enter different working periods. In this way, the embodiment of the present disclosure can realize automatic control of the working state of the Q value detection module.

[0184] In some application scenarios, the Q value detection module can be controlled by a control signal to poll in the first working period and the second working period. Figure 4 As shown, the time interval of a T_Q is 2s, the time interval of a T_RX is 4s, and the working sequence of the Q value detection module is: T_Q, T_RX, T_Q, T_RX, ... T_Q, T_RX; in this way, the Q value detection module keeps repeating T_Q and T_RX.

[0185] In more application scenarios, the Q value detection module does not poll in the first working period and the second working period. For example, when the Q value detection module is working in the first working period, if it is determined based on the detected discharge parameter or the Q value determined based on the discharge parameter that the first terminal needs to enter the wireless reverse charging state, the control module controls the Q value detection module to exit the first working period. For another example, when the Q value detection module is working in the first working period, if it is determined based on the discharge parameter or the Q value determined by the discharge parameter that the first terminal needs to enter the wireless charging state, then exit the first working period and enter the second working period; in these cases, the Q value detection module does not always poll in the first working period and the second working period, and when it determines that the first terminal needs to enter the wireless charging state, it will exit the corresponding working period.

[0186] like Fig.10 As shown, in some embodiments, step S32 includes:

[0187] Step S321: In response to the Q value detection module being in the first working period and the detected discharge parameter being greater than a first voltage threshold, determining that the first terminal enters the wireless forward charging state.

[0188] Here, the detected discharge parameter is the voltage value on the coil.

[0189] In practical applications, if a second terminal wirelessly charges the first terminal, when the Q value detection module of the first terminal is in the first working period, the voltage on the detection coil at this time is much greater than the voltage detected when there is no second terminal wirelessly charging the first terminal. In this way, it is possible to determine whether a second terminal is charging the first terminal by pre-setting this first voltage threshold. For example, when the discharge parameter is greater than the first voltage threshold, it is determined that the second terminal is charging the first terminal, thereby determining that the first terminal automatically enters the wireless forward charging state.

[0190] Here, the first voltage threshold is a voltage value on the coil detected when no second terminal charges the first terminal during historical detection, or a voltage value that differs from the voltage value within a predetermined range.

[0191] In this way, the disclosed embodiment can also automatically enter the wireless forward charging application scenario when there is a wireless charging device transmitter (i.e., the second terminal) within the predetermined range of the first terminal. At the same time, since it can automatically enter the wireless forward charging state in time, the utilization rate of wireless charging can be greatly improved.

[0192] In some application scenarios, in order to more accurately determine whether there is a foreign object that interferes with wireless charging between the second terminal and the first terminal when the second terminal charges the first terminal, such as a metal key, iron sheet, etc.; or whether the distance between the second terminal and the first terminal is relatively far. It is also necessary to further compare the detected discharge parameter with the size of the predetermined second voltage threshold to determine the distance between the first terminal and the second terminal and whether the foreign object exists. Among them, if there is a foreign object between the second terminal and the first terminal, or the distance between the first terminal and the second terminal is greater than the predetermined distance range, part of the power consumption of wireless charging will be wasted on the foreign object, resulting in a smaller discharge parameter actually detected.

[0193] Furthermore, when there is a foreign object such as a metal key, if the first terminal enters the wireless forward charging state, the foreign object will generate heat, causing interference and danger to the wireless charging.

[0194] In order to solve the above problem, in some embodiments, step S31 includes:

[0195] In response to the Q value detection module being in the first working period and the detected discharge parameter being greater than a second voltage threshold, determining that the Q value detection module enters the second working period; wherein the second voltage threshold is greater than the first voltage threshold;

[0196] If the Q value detection module receives a first detection signal sent by a second terminal when the Q value detection module is in the second working period, it is determined that the first terminal enters the wireless forward charging state;

[0197] or,

[0198] In response to the Q value detection module being in the first working period and the detected discharge parameter being between the first voltage threshold and the second voltage threshold, determining that the Q value detection module enters the second working period after the first working period ends;

[0199] If the Q value detection module is in the second working period and receives a first detection signal sent by a second terminal, it is determined that the first terminal enters the wireless forward charging state.

[0200] Thus, in the embodiment of the present disclosure, a second voltage threshold is preset to determine whether there is a foreign object that interferes with wireless charging between the second terminal and the first terminal when the second terminal charges the first terminal.

[0201] When the detected discharge parameter is greater than the second voltage threshold, it is determined that there is no foreign object between the second terminal and the first terminal. In this scenario, the Q value detection module is controlled to immediately exit the first working period of detecting the discharge parameter or detecting the Q value. In addition, if the Q value detection module enters the second working period, when the first terminal receives the first detection signal sent by the second terminal, it is determined that there is indeed a second terminal transmitting a wireless signal to the first terminal, and the first terminal automatically enters the wireless forward charging state.

[0202] When it is detected that the discharge parameter is greater than the first voltage threshold and the second voltage threshold, it is determined that there is a foreign object between the second terminal and the first terminal, or that the distance between the second terminal and the first terminal is outside the predetermined distance range; in this scenario, the Q value detection module is controlled to continue to work in the first working period. If the Q value detection module waits until the first working period ends and enters the second working time; and in the second working period, when the first terminal receives the first detection signal sent by the second terminal, it is determined that there is indeed a second terminal sending a wireless signal to the first terminal, then the first terminal automatically enters the wireless forward charging state.

[0203] In the above scenario, while the Q value detection module continues to work in the first working period and waits for the first working period to end, the wireless charging state to be entered can be determined again based on the discharge parameters detected on the coil.

[0204] Of course, if the discharge parameter is maintained between the first voltage threshold and the second voltage threshold during the time of waiting for the first working period to end, the second working period will automatically begin when the first working period ends.

[0205] In this way, in the embodiment of the present disclosure, by detecting the discharge parameters, it is possible to further determine whether there are foreign objects that interfere with wireless charging between the first terminal and the second terminal, or whether the distance between the first terminal and the second terminal is greater than a predetermined distance range, thereby being able to more accurately determine the wireless charging state entered; thereby being able to improve the safety of wireless charging while automatically entering the wireless charging state.

[0206] like Fig.11 As shown, in some embodiments, step S32 includes:

[0207] Step S322 includes:

[0208] Step S3221: in response to the Q value detection module being in the first working period and detecting that the discharge parameter is less than the first voltage threshold, determining the Q value based on the discharge parameter;

[0209] Step S3222: Based on the Q value, determine the wireless charging state entered by the first terminal.

[0210] Here, in the above step S3221, determining the Q value based on the discharge parameter includes: determining the Q value based on at least two discharge parameters sampled at a predetermined time interval. For example, a first voltage value Vth1 on the coil at a first moment T1 and a second voltage value Vth2 on the coil at a second moment T2 are collected; the Q value is calculated based on the difference between T1 and T2 and the ratio of Vth1 to Vth2.

[0211] Here, if the Q value detection module detects that the discharge parameter on the coil is less than the first voltage threshold, it is determined that no second terminal is supplying power to the first terminal. In this case, it is further possible to determine whether there is a wireless charging device receiving terminal on the first terminal that needs to be powered based on the Q value, and the wireless charging device receiving terminal can be a third terminal.

[0212] In this way, in the embodiment of the present disclosure, the Q value can also be determined based on the detected discharge parameters, thereby realizing Q value detection; and based on the Q value, the wireless charging state to be automatically entered is determined.

[0213] In some embodiments, the step S3222 includes:

[0214] In response to the Q value being less than a first Q threshold, determining that the Q value detection module enters a second working period;

[0215] or,

[0216] In response to the Q value being greater than a second Q threshold, determining that the Q value detection module enters the second working period after the first working period ends; wherein the second Q threshold is greater than the first Q threshold;

[0217] If the Q value detection module is in the second working period and receives a first detection signal sent by a second terminal, it is determined that the first terminal enters the wireless forward charging state.

[0218] Here, the magnitude of the Q value is positively correlated with the inductive reactance of the coil of the third terminal, and the magnitude of the Q value is negatively correlated with the impedance of the foreign object.

[0219] In the embodiment of the present disclosure, a predetermined first Q threshold is set; based on the magnitude of the detected Q value and the first Q threshold, it is determined whether there is a foreign object interfering with wireless charging or a third terminal within the predetermined range of the current first terminal.

[0220] In this way, when the detected Q value is less than the first Q threshold, it is determined that there is a foreign object that interferes with wireless charging within the predetermined range of the first terminal, and the first terminal does not need to perform wireless forward charging or wireless reverse charging. If charging or discharging at this time will cause the foreign object to heat up, charging or discharging will bring safety hazards. In this way, the Q value detection module can exit the first working period and enter the second working period to improve the safety of wireless charging.

[0221] In the embodiment of the present disclosure, if there are multiple third terminals within the predetermined range of the first terminal and need to be charged, the detected Q value will be greatly increased. Thus, by setting a predetermined second Q threshold, and based on the magnitude of the detected Q value and the second Q threshold, it is determined whether there are multiple third terminals within the predetermined range of the current first terminal or other factors that cause the Q value to increase, such as the influence of the surrounding environment.

[0222] In this way, when the detected Q value is greater than the second Q threshold, it is determined that there are multiple third terminals within the predetermined range of the first terminal. However, in this scenario, it is not suitable for the first terminal to charge multiple third terminals, and the first terminal does not need to enter the wireless forward charging state and the wireless reverse charging state. In this way, the Q value detection module can exit the first working period and enter the second working period, so as to automatically realize that the first terminal does not enter the wireless charging state.

[0223] In some other embodiments, the step S3222 includes:

[0224] In response to the Q value being between a first Q threshold and a second Q threshold, it is determined that the first terminal enters the wireless reverse charging state; wherein the second Q threshold is greater than the first Q threshold.

[0225] Here, if the Q value is between the first Q threshold and the second Q threshold, it is determined that there is a third terminal within the predetermined range of the first terminal, and the first terminal is determined to enter the wireless reverse charging state. In this way, it is possible to automatically enter the wireless reverse charging state, improve user experience satisfaction and electronic equipment intelligence; and also improve the safety of wireless charging.

[0226] In some embodiments, the method further comprises:

[0227] sending a second detection signal;

[0228] In response to not receiving a response signal sent by the third terminal based on the second detection signal within a predetermined time, determining that the first terminal exits the wireless reverse charging state, and controlling the Q value detection module to enter the second working period.

[0229] Here, the second detection signal is used to wake up the third terminal. Thus, when a response signal returned by the third terminal based on the second detection signal is received, it can be determined that the third terminal is a valid receiving device, and the third terminal can receive the wireless signal sent by the first terminal for charging.

[0230] In the embodiment of the present disclosure, if the response signal returned by the third terminal based on the second detection signal is not received within the predetermined time, it is determined that the third terminal has no response; in this scenario, the third terminal may not be a valid receiving device. In this way, the first terminal can exit the wireless reverse charging state, saving the energy of sending wireless signals of the first terminal.

[0231] Furthermore, by controlling the Q value detection module to enter the second working period, the power consumption of detecting the discharge parameter or the Q value in the first working period can be saved.

[0232] In some embodiments, the method further comprises:

[0233] In response to the Q value detection module being in the second working period and receiving a first detection signal sent by a second terminal, it is determined that the first terminal enters the wireless forward charging state.

[0234] Here, when the Q value detection module works in the second working period, the Q value detection module is used to detect the discharge parameter or the Q value.

[0235] Thus, in the embodiment of the present disclosure, during the second working period, the wireless forward charging state can be automatically entered according to the first detection signal sent by the second terminal; thus, user experience satisfaction and the intelligence of the electronic device can be improved.

[0236] The following provides a specific example of a wireless charging method in combination with any of the above wireless charging device embodiments. The wireless charging method is applied to a first terminal. The first terminal includes: a charging circuit and a Q value detection module for Q value detection. The charging circuit includes: a coil. Fig.12 As shown, the method comprises the following steps:

[0237] Step S51: if it is determined that the enabling terminal of the Q value detection module is enabled, the Q value detection module polls in the first working period and the second working period;

[0238] In an optional embodiment, the first terminal generates an enable signal to enable the Q value detection module, and the Q value detection module enters a working state of detecting the discharge parameter under the action of the enable signal; wherein the working state includes a first working period and a second working period.

[0239] Here, during the first working period, the Q value detection module detects the discharge parameters on the coil; during the second working period, the Q value detection module stops detecting the discharge parameters on the coil.

[0240] Step S52: determining the wireless charging state to be entered based on the detected discharge parameter and a predetermined first voltage threshold during the first working period;

[0241] Here, the wireless charging state includes: a wireless reverse charging state or a wireless forward charging state; wherein, in the wireless reverse charging state, the first terminal sends a wireless signal for discharging; and in the wireless forward charging state, the first terminal receives a wireless signal for charging.

[0242] In an optional embodiment, if the discharge parameter detected by the Q value detection module of the first terminal during the first working period is greater than a predetermined first voltage threshold, it is determined that the first terminal enters a wireless forward charging state.

[0243] Here, when the detected discharge parameter is greater than a predetermined second voltage threshold, it is determined that the Q value detection module enters a second working period;

[0244] Alternatively, when the detected discharge parameter is between the first voltage threshold and the second voltage threshold, it is determined that the Q value detection enters the second working period after the first working period ends.

[0245] Here, the second voltage threshold is greater than the first voltage threshold.

[0246] Here, during the second working period, if a first detection signal sent by the second terminal is received, it is determined that the first terminal enters the wireless charging state.

[0247] Step S53: In the first working period, if the detected discharge parameter is less than a predetermined voltage threshold, determine a Q value based on the discharge parameter; and determine the wireless charging state to be entered based on the Q value;

[0248] In an optional embodiment, if the discharge parameter detected by the Q value detection module of the first terminal is less than the first voltage threshold during the first working period, the Q value is determined based on the discharge parameter; and based on the Q value and a predetermined Q threshold, the wireless charging state entered by the first terminal is determined.

[0249] Here, determining the wireless charging state entered by the first terminal based on the Q value and a predetermined Q threshold includes one of the following:

[0250] If the Q value is less than a predetermined first Q threshold, it is determined that the Q value module enters a second working period; if a first detection signal sent by a second terminal is received during the second working period, it is determined that the first terminal enters the wireless forward charging state;

[0251] If the Q value is between the first Q threshold and the second Q threshold, determining that the first terminal enters the wireless reverse charging state;

[0252] If the Q value is greater than the second Q threshold, it is determined that the Q value detection module enters the second working period after the first working period ends; if the first detection signal sent by the second terminal is received in the second working period, it is determined that the first terminal enters the wireless forward charging state.

[0253] In an optional embodiment, when the first terminal enters the wireless reverse charging state, a second detection signal is also sent; if a response signal returned by the third terminal based on the second detection signal is not received within a predetermined time interval, it is determined that the first terminal exits the wireless reverse charging state, and the Q value detection module is controlled to enter a second working period.

[0254] Of course, in other embodiments, if the first terminal receives a response signal returned by the third terminal based on the second detection signal within the predetermined time interval after sending the second detection signal, a wireless signal is transmitted to power the third terminal.

[0255] Step S54: During the second working period, if it is determined that the first detection signal is received, it is determined to enter the wireless forward charging state.

[0256] In an optional embodiment, if the first terminal determines that the first detection signal sent by the second terminal is received during the second working period, it is determined that the first terminal enters the wireless forward charging state.

[0257] In the disclosed embodiment, the corresponding wireless charging state can be automatically entered according to the discharge parameter on the coil detected by the Q value detection module or based on the Q value; in this way, there is no need to manually turn on the wireless charging state, which can facilitate users, improve user experience satisfaction, and enhance the intelligence of the first terminal. In addition, the wireless charging state is determined based on the discharge parameter or Q value, and its discharge parameter and Q value are obtained by directly detecting the coil based on the Q value detection module connected to the coil, which can improve the accuracy of the Q value or discharge parameter, and can accurately determine the wireless charging or discharge state of the first terminal, thereby improving the safety of wireless charging.

[0258] In the embodiments of the present disclosure, the wireless charging state entered by the first terminal can be determined based on the comparison of the discharge parameter with a predetermined voltage threshold, or the comparison of the discharge parameter with the predetermined voltage threshold and the Q value determined based on the discharge parameter with the predetermined Q threshold in the first working period, thereby being able to determine the corresponding wireless charging state in various application scenarios, such as whether there is a transmitter (second terminal) within the predetermined range of the first terminal, whether there is a receiver (third terminal) within the predetermined range of the first terminal, whether there are foreign objects that interfere with wireless charging between the first terminal and the second terminal or between the first terminal and the third terminal, etc., thereby being able to more accurately determine the corresponding wireless charging state, thereby improving the safety of wireless charging.

[0259] In the embodiment of the present disclosure, when it is possible to detect the discharge parameter in the second working period, it is possible to determine whether there is a transmitter within a predetermined range of the first terminal based on whether a detection signal is received, thereby determining the wireless charging state based on this; thereby being able to determine the wireless charging state in more scenarios.

[0260] The present disclosure also provides a terminal, including:

[0261] a memory for storing processor-executable instructions;

[0262] Wherein, the processor is configured to: implement the wireless charging method described in any embodiment of the present disclosure when executing the executable instructions.

[0263] The memory may include various types of storage media, which are non-transitory computer storage media that can continue to memorize information stored thereon after the communication device loses power.

[0264] The processor may be connected to the memory through a bus or the like, and is used to read the executable program stored in the memory, for example, to implement the following Figure 9-12 At least one of the methods shown.

[0265] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0266] Fig.13 8 is a block diagram of a terminal 800 including a wireless charging device according to an exemplary embodiment. For example, the terminal 800 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0267] Reference Fig.13 The terminal 800 may include one or more of the following components: a processing component 802 , a memory 804 , a power component 806 , a multimedia component 808 , an audio component 810 , an input / output (I / O) interface 812 , a sensor component 814 , and a communication component 816 .

[0268] The processing component 802 generally controls the overall operation of the terminal 800, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 802 may include one or more processors 820 to execute instructions to complete all or part of the steps of the above-mentioned method. In addition, the processing component 802 may include one or more modules to facilitate the interaction between the processing component 802 and other components. For example, the processing component 802 may include a multimedia module to facilitate the interaction between the multimedia component 808 and the processing component 802.

[0269] The memory 804 is configured to store various types of data to support operations on the device 800. Examples of such data include instructions for any application or method operating on the terminal 800, contact data, phone book data, messages, pictures, videos, etc. The memory 804 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0270] Power component 806 provides power to various components of terminal 800. Power component 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to terminal 800.

[0271] The multimedia component 808 includes a screen that provides an output interface between the terminal 800 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front camera and / or a rear camera. When the device 800 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera may receive external multimedia data. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

[0272] The audio component 810 is configured to output and / or input audio signals. For example, the audio component 810 includes a microphone (MIC), and when the terminal 800 is in an operation mode, such as a call mode, a recording mode, and a speech recognition mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in the memory 804 or sent via the communication component 816. In some embodiments, the audio component 810 also includes a speaker for outputting audio signals.

[0273] I / O interface 812 provides an interface between processing component 802 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include but are not limited to: home button, volume button, start button, and lock button.

[0274] The sensor assembly 814 includes one or more sensors for providing various aspects of status evaluation for the terminal 800. For example, the sensor assembly 814 can detect the open / closed state of the device 800, the relative positioning of the components, such as the display and keypad of the terminal 800, and the sensor assembly 814 can also detect the position change of the terminal 800 or a component of the terminal 800, the presence or absence of the user contacting the terminal 800, the position or acceleration / deceleration of the terminal 800 and the temperature change of the terminal 800. The sensor assembly 814 can include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 814 can also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 can also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor or a temperature sensor.

[0275] The communication component 816 is configured to facilitate the communication between the terminal 800 and other devices in a wired or wireless manner. The terminal 800 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 816 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 816 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0276] In an exemplary embodiment, terminal 800 can be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors or other electronic components to perform the above methods.

[0277] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 804 including instructions, and the instructions can be executed by a processor 820 of the terminal 800 to perform the above method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0278] The embodiments of the present disclosure further provide a computer-readable storage medium, wherein the computer-readable storage medium stores an executable program, wherein the executable program, when executed by a processor, implements the wireless charging method described in any embodiment of the present disclosure. Figure 9-12 At least one of the methods shown.

[0279] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed in this disclosure. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0280] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A wireless charging device, characterized in that: Applied to the first terminal, the wireless charging device comprises: a charging circuit, a Q value detection module for quality factor Q value detection, and a control module, wherein: The charging circuit comprises: a coil; The Q value detection module includes: a detection circuit connected to the coil, used to detect a discharge parameter on the coil for determining the Q value when the charging circuit transmits a wireless signal; The control module is connected to the output end of the detection circuit, and is used to determine the wireless charging state entered by the first terminal based on the discharge parameters; wherein the wireless charging state includes: a wireless reverse charging state or a wireless forward charging state; in the wireless reverse charging state, the first terminal sends a wireless signal for discharging; in the wireless forward charging state, the first terminal receives a wireless signal for charging.

2. The wireless charging device according to claim 1, characterized in that: The wireless charging device further includes: A control module, connected to the Q value detection module, used to send an enable signal to enable the Q value detection module; The Q value detection module is used to enter a working state of detecting the discharge parameter when enabled by the enable signal.

3. The wireless charging device according to claim 2, characterized in that: The detection circuit includes: at least one switch tube; the switch tube is connected to the coil; The control module is connected to the switch tube, and is used to control sending a first control signal to the switch tube to control the switch tube to be turned on, or to send a second control signal to the switch tube to control the switch tube to be turned off; The Q value detection module is used to, after entering the working state, work in a first working period of detecting the discharge parameter on the coil when the switch tube is turned off; or, when the switch tube is turned on, work in a second working period of stopping detecting the discharge parameter on the coil.

4. The wireless charging device according to claim 1, characterized in that: The Q value detection module further includes: A conversion circuit, connected to the output end of the detection circuit, for determining a Q value according to the discharge parameter; The control module is connected to the output end of the conversion circuit, and is used to determine the wireless charging state entered by the first terminal based on the Q value.

5. A wireless charging method, characterized in that: Applied to a first terminal, the first terminal includes a charging circuit and a Q value detection module for quality factor Q value detection, the charging circuit includes: a coil; the method includes: Acquire the Q value detection module to detect a discharge parameter on the coil for determining the Q value when the charging circuit sends a wireless signal; Based on the discharge parameters, determine the wireless charging state entered by the first terminal; wherein the wireless charging state includes: a wireless reverse charging state or a wireless forward charging state; in the wireless reverse charging state, the first terminal sends a wireless signal for discharging; in the wireless forward charging state, the first terminal receives a wireless signal for charging.

6. The method according to claim 5, characterized in that The method further comprises: Generate an enable signal for enabling the Q value detection module; wherein the enable signal is used to trigger the Q value detection module to enter a working state for detecting the discharge parameter.

7. The method according to claim 6, characterized in that The method further comprises: generating a first control signal; Based on the first control signal, controlling the switch tube of the Q value detection module to be turned off, so that the Q value detection module entering the working state works in the first working period for detecting the discharge parameter on the coil; or, generating a second control signal; Based on the second control signal, the switch tube is controlled to be turned on, so that the Q value detection module that enters the working state works in the second working period in which the detection of the discharge parameter on the coil is stopped.

8. The method according to claim 7, characterized in that The determining, based on the discharge parameter, a wireless charging state entered by the first terminal includes: In response to the Q value detection module being in the first working period and the detected discharge parameter being greater than a first voltage threshold, it is determined that the first terminal enters the wireless forward charging state.

9. The method according to claim 8, characterized in that In response to the Q value detection module being in the first working period and the detected discharge parameter being greater than a first voltage threshold, determining that the first terminal enters the wireless forward charging state includes: In response to the Q value detection module being in the first working period and the detected discharge parameter being greater than a second voltage threshold, determining that the Q value detection module enters the second working period; wherein the second voltage threshold is greater than the first voltage threshold; If the Q value detection module receives a first detection signal sent by a second terminal when the Q value detection module is in the second working period, it is determined that the first terminal enters the wireless forward charging state; or, In response to the Q value detection module being in the first working period and the detected discharge parameter being between the first voltage threshold and the second voltage threshold, determining that the Q value detection module enters the second working period after the first working period ends; If the Q value detection module is in the second working period and receives a first detection signal sent by a second terminal, it is determined that the first terminal enters the wireless forward charging state.

10. The method according to claim 7, characterized in that The determining, based on the discharge parameter, a wireless charging state entered by the first terminal includes: In response to the Q value detection module being in the first working period and detecting that the discharge parameter is less than a first voltage threshold, determining a Q value based on the discharge parameter; Based on the Q value, the wireless charging state entered by the first terminal is determined.

11. The method according to claim 10, characterized in that The determining, based on the Q value, the wireless charging state entered by the first terminal includes: In response to the Q value being between a first Q threshold and a second Q threshold, it is determined that the first terminal enters the wireless reverse charging state; wherein the second Q threshold is greater than the first Q threshold.

12. The method according to claim 11, characterized in that The method further comprises: sending a second detection signal; In response to not receiving a response signal sent by the third terminal based on the second detection signal within a predetermined time, determining that the first terminal exits the wireless reverse charging state, and controlling the Q value detection module to enter the second working period.

13. The method according to claim 10, characterized in that The determining, based on the Q value, the wireless charging state entered by the first terminal includes: In response to the Q value being less than a first Q threshold, determining that the Q value detection module enters a second working period; or, In response to the Q value being greater than a second Q threshold, determining that the Q value detection module enters the second working period after the first working period ends; wherein the second Q threshold is greater than the first Q threshold; If the Q value detection module is in the second working period and receives a first detection signal sent by a second terminal, it is determined that the first terminal enters the wireless forward charging state.

14. The method according to claim 7, characterized in that The method further comprises: In response to the Q value detection module being in the second working period and receiving a first detection signal sent by a second terminal, it is determined that the first terminal enters the wireless forward charging state.

15. A terminal, characterized in that: include: processor; a memory for storing processor-executable instructions; Wherein, the processor is configured to: implement the wireless charging method described in any one of claims 5-14 when executing the executable instructions.

16. A computer-readable storage medium, characterized in that: The readable storage medium stores an executable program, wherein the executable program, when executed by a processor, implements the wireless charging method according to any one of claims 5 to 14.

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