Wireless charging method and device and terminal equipment

Abstract

The invention relates to a wireless charging method and device and terminal equipment, and relates to the technical field of wireless charging. According to the specific implementation mode, the method is applied to receiving end equipment of the low-inductance wireless charging system, and the inductance value of a receiving coil of the low-inductance wireless charging system is smaller than that of a transmitting coil; the method comprises the following steps: in a charging starting stage, controlling a receiving end of the wireless charging system to work in a half-bridge mode; and when the input voltage of the receiving end reaches a first voltage threshold in the fast charging stage, the receiving end is controlled to be switched to work in a full-bridge mode. And the requirements of the low-inductance wireless charging system on the input voltage of the receiving end in the starting stage and the fast charging stage are met, so that the normal work of the low-inductance wireless charging system is ensured.

Description

Technical Field

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

[0002] Among related technologies, wireless charging is becoming increasingly popular in mobile phones and other terminal devices. Wireless charging utilizes the principle of electromagnetic induction. When a mobile phone is placed near a wireless charging station, the station's coil, acting as the transmitter, generates an electromagnetic signal. The phone's coil, acting as the receiver, senses this electromagnetic signal and generates a current, thereby charging the phone's battery.

[0003] However, in related wireless charging systems, the receiving coil in the wireless charging receiver is typically designed with a large inductance. This results in high temperatures during charging, causing internal heating of the terminal device and affecting its normal operation. Consequently, low-inductance wireless charging systems, where the inductance of the receiving coil is designed to be smaller than that of the transmitting coil, often experience problems with proper startup. Summary of the Invention

[0004] In order to overcome the problems existing in the related art, the present disclosure provides a wireless charging method, apparatus and terminal device.

[0005] According to a first aspect of an embodiment of the present disclosure, a wireless charging method is provided, the method comprising:

[0006] During the charging startup phase, controlling the receiving end of the wireless charging system to operate in a half-bridge mode;

[0007] In the fast charging stage and when the input voltage of the receiving end reaches a first voltage threshold, the receiving end is controlled to switch to the full-bridge mode.

[0008] In some implementations, controlling the receiving end to switch to the full-bridge mode includes:

[0009] The output voltage of the transmitting end of the wireless charging system is controlled to continuously increase so that the output voltage of the receiving end meets the fast charging protocol.

[0010] In some implementations, controlling the output voltage of the transmitter of the wireless charging system to continuously increase includes:

[0011] Based on the fast charging protocol, setting the output voltage of the receiving end;

[0012] Based on the output voltage of the receiving end, the output voltage of the transmitting end of the wireless charging system is controlled to continuously increase.

[0013] In some implementations, controlling the output voltage of the transmitter of the wireless charging system to continuously increase includes:

[0014] A step-up / step-down instruction is sent to the transmitter, so that the transmitter increases the output voltage of the transmitter based on the step-up / step-down instruction.

[0015] In some implementations, controlling the receiving end to switch to full-bridge mode includes:

[0016] By interrupting, the receiving end is controlled to switch to the full-bridge mode.

[0017] In some implementations, the method further includes:

[0018] When the output voltage of the receiving end is greater than the first charging voltage threshold, the output voltage upper limit value of the transmitting end is the first threshold;

[0019] When the output voltage of the receiving end is less than the second charging voltage threshold, the output voltage upper limit value of the transmitting end is the second threshold, the second charging voltage threshold is less than the first charging voltage threshold, and the second threshold is less than the first threshold.

[0020] According to a second aspect of an embodiment of the present disclosure, a wireless charging device is provided, the device comprising:

[0021] A startup control module, configured to control the receiving end of the wireless charging system to operate in a half-bridge mode during a charging startup phase;

[0022] The mode switching module is used to control the receiving end to switch to full-bridge mode when the input voltage of the receiving end reaches a first voltage threshold during the fast charging stage.

[0023] In some implementations, after controlling the receiving end to switch to the full-bridge mode, the mode switching module is further configured to:

[0024] The output voltage of the transmitting end of the wireless charging system is controlled to continuously increase so that the output voltage of the receiving end meets the fast charging protocol.

[0025] In some implementations, the mode switching module is configured to:

[0026] Based on the fast charging protocol, setting the output voltage of the receiving end;

[0027] Based on the output voltage of the receiving end, the output voltage of the transmitting end of the wireless charging system is controlled to continuously increase.

[0028] In some implementations, the mode switching module is configured to:

[0029] A step-up / step-down instruction is sent to the transmitter, so that the transmitter increases the output voltage of the transmitter based on the step-up / step-down instruction.

[0030] In some implementations, the mode switching module controls the receiving end to switch to the full-bridge mode;

[0031] By interrupting, the receiving end is controlled to switch to the full-bridge mode.

[0032] In some implementations, the apparatus satisfies the following conditions:

[0033] When the output voltage of the receiving end is greater than the first charging voltage threshold, the output voltage upper limit value of the transmitting end is the first threshold;

[0034] When the output voltage of the receiving end is less than the second charging voltage threshold, the output voltage upper limit value of the transmitting end is the second threshold, the second charging voltage threshold is less than the first charging voltage threshold, and the second threshold is less than the first threshold.

[0035] According to a third aspect of an embodiment of the present disclosure, there is provided a terminal device, comprising: a receiving end of a wireless charging system;

[0036] The receiving end is used to implement the method described in the first aspect.

[0037] According to a fourth aspect of an embodiment of the present disclosure, a terminal device is provided, including:

[0038] at least one processor; and

[0039] a memory communicatively connected to the at least one processor; wherein,

[0040] The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the method described in the first aspect.

[0041] According to a fifth aspect of an embodiment of the present disclosure, a computer-readable storage medium is provided, comprising:

[0042] The storage medium stores a computer program, which, when executed by the processor, implements the method described in the first aspect.

[0043] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: meeting the input voltage requirements of the low-inductance wireless charging system for the receiving end during the startup phase and the fast charging phase, thereby ensuring the normal operation of the low-inductance wireless charging system.

[0044] 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 disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] 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.

[0046] Figure 1 The figure is a flow chart showing a wireless charging method according to an exemplary embodiment.

[0047] Figure 2 This is a schematic diagram of the startup logic of the low-inductance wireless charging system provided in an embodiment of the present application.

[0048] Figure 3 This is a schematic diagram of the startup logic of another low-inductance wireless charging system provided in an embodiment of the present application.

[0049] Figure 4 is a block diagram of a wireless charging device according to an exemplary embodiment.

[0050] Figure 5 It is a block diagram of a device according to an exemplary embodiment. DETAILED DESCRIPTION

[0051] Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. In the following description, when referring to the drawings, like numbers in different figures represent like or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present invention, as detailed in the appended claims.

[0052] In the related art, the wireless charging system includes a transmitter and a receiver. The transmitter includes a transmitting coil, and the receiver includes a receiving coil. The terminal device with a receiving coil of the wireless charging system mostly uses electromagnetic induction to complete the charging operation during the wireless charging process, and needs to use the transmitting coil and the receiving coil to complete the mutual conversion of "electricity" and "magnetism". The transmitting coil and the receiving coil of the traditional wireless charging system are both conventional inductance coils. For example, conventional inductance can refer to the inductance of the coil in the Rx end device in the wireless charging system in the range of 8uH to 12uH, then the system gain of the T / Rx transmission system composed of the Rx device and the Tx device is approximately 1:1 (full bridge). Due to the large impedance of the high-inductance coil, the heat phenomenon is serious during the wireless charging process, causing internal heating of the terminal device, which affects the normal use of the terminal device.

[0053] Therefore, a low-inductance wireless charging system solution was proposed. This solution reduces the heat generation of the terminal device where the receiving coil is located by reducing the inductance of the receiving coil. For example, low inductance can refer to the inductance of the WPC (Wireless Power Consortium) coil in the Rx device being in the range of 3uH to 6uH. The Rx end with a low-inductance receiving coil and the Tx end with a conventional inductance transmitting coil form the T / Rx transmission system, i.e., a low-inductance wireless charging system.

[0054] It should also be noted that the Rx end includes a rectifier unit, which is used to convert the AC voltage of the receiving coil into a DC voltage. The working modes of the rectifier unit include half-bridge mode and full-bridge mode. The receiving end of the wireless charging system with conventional inductance adopts full-bridge mode in the startup phase and subsequent charging phase. The system gain ratio (full bridge) is relatively close to 1:1. The voltage constraints of the transmitting and receiving ends are close to 1:1, and the wireless charging system can start normally. The gain of the low-inductance wireless charging system is approximately 1:1 (half bridge) and 2:1 (full bridge). If it works in conventional full-bridge mode, there is a problem that the output voltage of the transmitting end cannot ensure that the input voltage of the receiving end meets the startup conditions of the Rx end.

[0055] Figure 1 FIG. 1 is a flow chart showing a wireless charging method according to an exemplary embodiment. Figure 1 As shown, the wireless charging method is used in a terminal and includes the following steps.

[0056] First, it should be noted that the wireless charging method of the embodiments of the present application is applied to the receiving device of a low-inductance wireless charging system, where the inductance of the receiving coil is less than the inductance of the transmitting coil. The receiving device can be a terminal device, which may include but is not limited to: a mobile phone, a pad, or other electronic device with a display, without limitation. In other words, the wireless charging method of the embodiments of the present application can be applied to a terminal device.

[0057] In step S101 , during the charging startup phase, the receiving end of the wireless charging system is controlled to operate in a half-bridge mode.

[0058] It can be understood that in the startup phase of the low-inductance wireless charging system, if the receiving end operates in full-bridge mode, since the gain of the low-inductance wireless charging system is about 2:1 (full bridge), which is relatively small, the system gain is insufficient. For example, the input voltage TX-VIN of the transmitter is 6V, and the input voltage Vrect of the receiver may not reach 6V, and may be only 3V or 4V. At this time, the wireless charging system may not start normally. In the embodiment of the present application, during the charging startup phase, the receiving end of the wireless charging system is controlled to operate in half-bridge mode. Since the gain of the low-inductance wireless charging system is about 1:1 (half bridge), it can make up for the lack of system gain and achieve a 1:1 state. For example, TX-VIN is 6V, and Vrect is also close to 6V, meeting the 1:1 gain requirement, and the wireless charging system starts. Therefore, through half-bridge startup, the input voltage Vrect of the receiving end is increased to meet the startup conditions of the receiving end.

[0059] That is to say, when the transmitter of the wireless charging system sends the same voltage, the receiving coil of the receiving end of the half-bridge mode can obtain a higher gain voltage and output voltage than that of the full-bridge mode.

[0060] As a possible implementation, a control unit of a receiving-end device of the wireless charging system controls the receiving end to operate in a half-bridge mode during a charging startup phase.

[0061] Exemplarily, the receiving end includes a receiving coil, a rectifier unit, a charging conversion unit, and a control unit. The rectifier unit operates in half-bridge and full-bridge modes. The rectifier unit converts the AC voltage of the receiving coil into a DC voltage, and the charging conversion unit converts the DC voltage into a charging voltage for charging the battery. The control unit controls the operating mode of the rectifier unit and the output voltage of the receiving end. In other words, the control unit can control the rectifier unit of the wireless charging system's receiving end to operate in half-bridge mode.

[0062] This step allows the low-inductance wireless charging system to increase the system gain to approximately 1:1 during startup through the half-bridge mode, thereby increasing the input voltage Vrect at the receiving end so that the voltage Vrect at the receiving end is sufficient to start the Rx end to work.

[0063] That is to say, during the startup phase of the low-inductance wireless charging system, the voltage Vrect is increased by the half-bridge mode of the receiving end to solve the problem in the prior art that the voltage Vrect is insufficient to start the Rx operation in the full-bridge mode.

[0064] In step S102 , in the fast charging stage and when the input voltage of the receiving end reaches a first voltage threshold, the receiving end is controlled to switch to the full-bridge mode.

[0065] It can be understood that after the wireless charging system's receiver successfully starts in half-bridge mode during the startup phase, as the voltage Vrect increases, it enters the fast charging phase (FC). When the voltage Vrect reaches a first voltage threshold, the receiver is controlled to switch to full-bridge mode, switching the wireless charging system to full-bridge mode to charge the battery. The fast charging phase refers to the high-power phase, which achieves fast charging through high power.

[0066] As a possible implementation manner, the control unit of the receiving end device of the wireless charging system controls the receiving end to operate in full-bridge mode when the receiving end is in a fast charging stage and the input voltage of the receiving end reaches a first voltage threshold.

[0067] As an implementation method, a method for controlling the receiving end to switch to the full-bridge mode includes: controlling the receiving end to switch to the full-bridge mode through an interrupt.

[0068] In some embodiments, after controlling the receiving end to switch to the full-bridge mode, the output voltage of the transmitting end of the wireless charging system is controlled to continue to increase so that the output voltage of the receiving end meets the fast charging protocol.

[0069] As an implementation method, a method for controlling the output voltage of the transmitter of a wireless charging system to continuously increase includes: setting the output voltage of the receiver based on a fast charging protocol; and controlling the output voltage of the transmitter of the wireless charging system to continuously increase based on the output voltage of the receiver.

[0070] Furthermore, a method for controlling the output voltage of the transmitter of the wireless charging system to continuously increase includes: sending a step-up / step-down instruction to the transmitter, so that the transmitter increases the output voltage of the transmitter based on the step-up / step-down instruction.

[0071] For example, the output voltage Rx-Vout of the receiving end is set by mobile phone software, and based on Rx-Vout, a CP (Configuration Packet) instruction is sent to the transmitting end, so that the transmitting end increases the output voltage of the transmitting end based on the CP instruction.

[0072] For example, after startup, the input Vrect of the receiving end needs to be adjusted to 11V, then the CP instruction is used to increase the input voltage Tx-VIN of the transmitting end to 11V. If the voltage Vrect needs to be further increased, the CP instruction is continued to be issued to continue to increase Tx-VIN through the CP instruction to the range of 16-19V. This range is not controlled by Vrect, and the output voltage Rx-Vout of the receiving end needs to be set for more precise voltage control. The increase and decrease of Rx-Vout drives the increase and decrease of Vrect, and then adjusts the increase and decrease of Tx-VIN.

[0073] It can be understood that after entering the fast charging stage, the receiving end switches to the full-bridge mode in time, thereby achieving the goal of meeting the voltage Vrect requirement by continuously increasing the output voltage of the transmitting end, thereby ensuring that the working efficiency of the entire wireless charging system meets the design requirements.

[0074] The wireless charging method of the embodiment of the present application, during the startup phase of the small-inductance wireless charging system, controls the receiving end to operate in half-bridge mode to increase the input voltage of the receiving end, thereby solving the problem in the prior art that the input voltage of the receiving end is insufficient to start the receiving end in full-bridge mode. At the same time, after entering the fast charging phase, the receiving end switches to full-bridge mode in a timely manner, thereby controlling the transmitting end to continuously increase the output voltage of the transmitting end, thereby ensuring that the output voltage of the receiving end meets the fast charging conditions. Compared with the startup logic of the traditional conventional inductance wireless charging system, the small-inductance wireless charging system adds the switching logic of half-bridge and full-bridge to meet the voltage Vrect voltage requirements of the small-inductance and low-gain wireless charging system during the startup phase and when entering the fast charging phase, thereby ensuring the normal operation of the small-inductance wireless charging system.

[0075] The following describes the execution process of the wireless charging method of the above embodiment in detail using specific examples. The specific examples are divided into a high-voltage transmitter (high-voltage Tx) and a low-voltage transmitter (low-voltage Tx). High-voltage Tx generally refers to a maximum output voltage of Tx that is a first threshold, illustratively, the first threshold is generally 40V; low-voltage Tx generally refers to a maximum output voltage of Tx that is a second threshold, illustratively, the second threshold is generally 20V.

[0076] Figure 2 This is a schematic diagram of the startup logic of the low-inductance wireless charging system provided in the embodiment of the present application. Figure 2As shown, the transmitter of the low-inductance wireless charging system is a high-voltage transmitter. When the output voltage of the receiving end is greater than the first charging voltage threshold (e.g., 16V), the upper limit of the output voltage of the transmitter is the first threshold (e.g., 40V). Figure 2 As shown, the startup logic of the low-inductance wireless charging system includes:

[0077] S11, after the terminal device is placed on the transmitter board, in the startup phase, the low-inductance wireless charging system increases the Vrect voltage by working in half-bridge mode and starts Rx operation.

[0078] It should be noted that the startup logic of a conventional wireless charging system includes the following: After the terminal device is placed on the transmitter, the wireless charging startup phase begins, starting with a ping test from BPP (Basic Power Profile) -6V to EPP (Extended Power Profile) -11V, and then completing private authentication. An FC_GD interrupt is issued, and the AP sets the Rx-Vout voltage. When the Rx-Vout voltage reaches the threshold for turning on the 4:1-ChargePump, the CP instruction begins to pull the load.

[0079] For the startup logic of the low-inductance wireless charging system, such as Figure 2 As shown in the figure, after the terminal device is placed on the transmitter board, the ping test is started from BPP-6V to EPP-11V, and then the private authentication is completed, and the FC is sent to the transmitter to enter the fast charging stage.

[0080] S12, the voltage Vrect continues to increase as the receiving end starts, and after entering the private fast charging stage, when the voltage Vrect reaches the first voltage threshold, the working mode of the receiving end is switched to the full-bridge mode, and the output voltage of Tx is continuously increased to ensure that the output voltage of Rx meets the conditions of private fast charging.

[0081] like Figure 2As shown, when entering the FC fast charging phase, a boost command is sent. After the voltage Vrect in the FC fast charging phase rises to the first voltage threshold of 15V+±1.5V, an FC interrupt is issued, and the receiver switches to full-bridge mode. Since the system gain of a low-inductance wireless charging system is approximately 2:1 (full-bridge), the system gain drops by nearly half, and the voltage Vrect drops from approximately 15V to approximately 8V. Then, in full-bridge mode, based on the set output voltage of the receiver (in this example, Rx-Vout is 4*Vbat+delta, where Vbat represents the battery voltage and delta represents the change, for example, approximately 16-19V), the output voltage of the transmitter is increased through boost and buck commands, causing the voltage Vrect to continue to rise. At this point, the output voltage of the TX will be higher than 20V, meeting the low system gain (2:1) condition. The voltage Vrect reaches a high voltage (for example, approximately 16-19V), ensuring that the operating efficiency of the entire wireless charging system meets the design requirements.

[0082] Figure 3 This is another schematic diagram of the startup logic of a low-inductance wireless charging system provided in an embodiment of the present application. Figure 3 As shown, the transmitter of the low-inductance wireless charging system is a low-voltage transmitter. When the output voltage of the receiving end is less than the second charging voltage threshold (e.g., 10V), the upper limit of the output voltage of the transmitter is the second threshold (e.g., 20V). Figure 2 As shown, the startup logic of the low-inductance wireless charging system includes:

[0083] S21, after the terminal device is placed on the transmitter board, in the startup phase, the low-inductance wireless charging system increases the Vrect voltage by working in half-bridge mode and starts Rx operation.

[0084] like Figure 3 As shown in the figure, after the terminal device is placed on the transmitter board, the ping test is started from BPP-6V to EPP-11V, and then the private authentication is completed, and the FC is sent to the transmitter to enter the fast charging stage.

[0085] S22, the voltage Vrect continues to increase as the receiving end starts, and after entering the private fast charging stage, when the voltage Vrect reaches the first voltage threshold, the working mode of the receiving end is switched to the full-bridge mode, and the output voltage of Tx is continuously increased to ensure that the output voltage of Rx meets the conditions of private fast charging.

[0086] like Figure 3As shown, when entering the FC fast charging stage, a boost command is sent. After the voltage Vrect in the FC fast charging stage rises to the first voltage threshold of 15V+±1.5V, an FC interrupt is issued, and the receiving end switches to full-bridge mode. Since the system gain of the low-inductance wireless charging system is approximately 2:1 (full-bridge), the system gain drops by nearly half, and the voltage Vrect drops from about 15V to about 8V. Afterwards, in full-bridge mode, according to the set output voltage of the receiving end (in this example, Rx-Vout is 2*Vbat+delta, where Vbat represents the battery voltage and delta represents the change, for example, 7.5-10V), the output voltage of the transmitting end is adjusted through the boost and buck commands, thereby adjusting the voltage Vrect to meet the Vrect voltage requirement, ensuring that the working efficiency of the entire low-inductance wireless charging system meets the design requirements. For example, if the input voltage of the transmitting end only needs 20V, the output voltage requirement of 7.5-10V of the receiving end can be met.

[0087] What needs to be explained here is that Figure 2 、 Figure 3 The process of the voltage Vrect rising to the first voltage threshold of 15V+±1.5V shown in the figure is not a direct rise process, but a gradual rise to the first voltage threshold. In addition, after switching the full bridge, if the receiving end has not received the target voltage instruction, it will continue to increase the voltage according to the protocol; after receiving the target voltage instruction, for the low-voltage Tx, since the target voltage is small, it needs to reduce the voltage again. Figure 3 After the full bridge is switched on, the voltage rises and then falls.

[0088] An embodiment of the present application further provides a terminal device, which includes a receiving end of a wireless charging system; the receiving end is used to implement the wireless charging method of the above embodiment.

[0089] Therefore, the terminal device meets the voltage Vrect requirement of the small-inductance and low-gain wireless charging system during the startup phase and the fast charging phase, thereby ensuring the normal operation of the small-inductance wireless charging system.

[0090] Figure 4 is a block diagram of a wireless charging device according to an exemplary embodiment, wherein the device is configured as a receiving end device of a low-inductance wireless charging system, wherein the inductance of the receiving coil of the low-inductance wireless charging system is smaller than the inductance of the transmitting coil; Figure 4 The device includes a startup control module 401 and a mode switching module 402.

[0091] The startup control module 401 is used to control the receiving end of the wireless charging system to operate in a half-bridge mode during the charging startup phase;

[0092] The mode switching module 402 is used to control the receiving end to switch to the full-bridge mode when the input voltage of the receiving end reaches the first voltage threshold during the fast charging stage.

[0093] In some implementations, after controlling the receiving end to switch to the full-bridge mode, the mode switching module 402 is further configured to:

[0094] The output voltage of the transmitter of the wireless charging system is controlled to continuously increase so that the output voltage of the receiver meets the fast charging protocol.

[0095] In some implementations, the mode switching module 402 is configured to:

[0096] Based on the fast charging protocol, set the output voltage of the receiving end;

[0097] Based on the output voltage of the receiving end, the output voltage of the transmitting end of the wireless charging system is controlled to continuously increase.

[0098] In some implementations, the mode switching module 402 is configured to:

[0099] Send a step-up / step-down instruction to the transmitter to cause the transmitter to increase the output voltage of the transmitter based on the step-up / step-down instruction.

[0100] In some implementations, the mode switching module 402 controls the receiving end to switch to the full-bridge mode;

[0101] Through interruption, the receiving end is controlled to switch to full-bridge mode.

[0102] In some implementations, the device satisfies the following conditions:

[0103] When the output voltage of the receiving end is greater than the first charging voltage threshold, the upper limit value of the output voltage of the transmitting end is the first threshold;

[0104] When the output voltage of the receiving end is less than the second charging voltage threshold, the output voltage upper limit of the transmitting end is the second threshold, the second charging voltage threshold is less than the first charging voltage threshold, and the second threshold is less than the first threshold.

[0105] Regarding the apparatus 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.

[0106] The wireless charging device of the present invention controls the receiving end to operate in half-bridge mode during the startup phase of the low-inductance wireless charging system to increase the receiving end's input voltage, thereby resolving the problem in existing technical solutions where the receiving end's input voltage is insufficient to start the receiving end in full-bridge mode. Furthermore, after entering the fast-charging phase, the receiving end promptly switches to full-bridge mode, thereby controlling the transmitting end to continuously increase the transmitting end's output voltage, thereby ensuring that the receiving end's output voltage meets the fast-charging conditions.

[0107] Figure 5 FIG1 is a block diagram of an apparatus 1800 for implementing wireless charging according to an exemplary embodiment. For example, apparatus 1800 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.

[0108] Reference Figure 5 , device 1800 may include one or more of the following components: a processing component 1802 , a memory 1804 , a power component 1806 , a multimedia component 1808 , an audio component 1810 , an input / output (I / O) interface 1812 , a sensor component 1814 , and a communication component 1816 .

[0109] Processing component 1802 generally controls the overall operation of device 1800, such as operations associated with display, phone calls, data communications, camera operation, and recording operations. Processing component 1802 may include one or more processors 1820 to execute instructions to perform all or part of the steps of the aforementioned methods. Furthermore, processing component 1802 may include one or more modules to facilitate interaction between processing component 1802 and other components. For example, processing component 1802 may include a multimedia module to facilitate interaction between multimedia component 1808 and processing component 1802.

[0110] The memory 1804 is configured to store various types of data to support the operations of the device 1800. Examples of such data include instructions for any application or method operating on the device 1800, contact data, phone book data, messages, pictures, videos, etc. The memory 1804 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.

[0111] The power component 1806 provides power to the various components of the device 1800. The power component 1806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the device 1800.

[0112] The multimedia component 1808 includes a screen that provides an output interface between the device 1800 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 touches, slides, and gestures on the touch panel. The touch sensor can 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 1808 includes a front camera and / or a rear camera. When the device 1800 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have a focal length and optical zoom capability.

[0113] The audio component 1810 is configured to output and / or input audio signals. For example, the audio component 1810 includes a microphone (MIC) that is configured to receive external audio signals when the device 1800 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may be further stored in the memory 1804 or transmitted via the communication component 1816. In some embodiments, the audio component 1810 further includes a speaker for outputting audio signals.

[0114] I / O interface 1812 provides an interface between processing component 1802 and peripheral interface modules, such as a keyboard, click wheel, buttons, etc. These buttons may include but are not limited to: a home button, volume buttons, a start button, and a lock button.

[0115] The sensor assembly 1814 includes one or more sensors for providing various aspects of the status assessment of the device 1800. For example, the sensor assembly 1814 can detect the open / closed state of the device 1800, the relative positioning of components, such as the display and keypad of the device 1800. The sensor assembly 1814 can also detect changes in the position of the device 1800 or a component of the device 1800, the presence or absence of user contact with the device 1800, the orientation or acceleration / deceleration of the device 1800, and changes in the temperature of the device 1800. The sensor assembly 1814 can include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 1814 can also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 1814 can also include an accelerometer, a gyroscope, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0116] The communication component 1816 is configured to facilitate wired or wireless communication between the device 1800 and other devices. The device 1800 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 1816 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 1816 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.

[0117] In an exemplary embodiment, the apparatus 1800 may 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-described methods.

[0118] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 1804 including instructions, and the instructions can be executed by the processor 1820 of the apparatus 1800 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.

[0119] Other embodiments of the present invention will readily occur to those skilled in the art 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 invention and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the invention being indicated by the following claims.

[0120] It should be understood that the present invention is not limited to the exact construction 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 method, characterized in that: The method comprises: During the charging startup phase, the receiving end of the wireless charging system is controlled to operate in half-bridge mode; In the fast charging stage and when the input voltage of the receiving end reaches a first voltage threshold, the receiving end is controlled to switch to the full-bridge mode.

2. The wireless charging method according to claim 1, wherein: After controlling the receiving end to switch to the full-bridge mode, the method includes: The output voltage of the transmitting end of the wireless charging system is controlled to continuously increase so that the output voltage of the receiving end meets the fast charging protocol.

3. The wireless charging method according to claim 2, wherein: The method of controlling the output voltage of the transmitter of the wireless charging system to continuously increase includes: Based on the fast charging protocol, setting the output voltage of the receiving end; Based on the output voltage of the receiving end, the output voltage of the transmitting end of the wireless charging system is controlled to continuously increase.

4. The wireless charging method according to claim 3, wherein: The method of controlling the output voltage of the transmitter of the wireless charging system to continuously increase includes: A step-up / step-down instruction is sent to the transmitter, so that the transmitter increases the output voltage of the transmitter based on the step-up / step-down instruction.

5. The wireless charging method according to claim 1, wherein: The controlling the receiving end to switch to full-bridge mode includes: By interrupting, the receiving end is controlled to switch to the full-bridge mode.

6. The wireless charging method according to claim 1, wherein: The method further comprises: When the output voltage of the receiving end is greater than the first charging voltage threshold, the output voltage upper limit value of the transmitting end is the first threshold; When the output voltage of the receiving end is less than the second charging voltage threshold, the output voltage upper limit value of the transmitting end is the second threshold, the second charging voltage threshold is less than the first charging voltage threshold, and the second threshold is less than the first threshold.

7. A wireless charging device, characterized in that: include: A startup control module, configured to control the receiving end of the wireless charging system to operate in a half-bridge mode during a charging startup phase; The mode switching module is used to control the receiving end to switch to full-bridge mode when the input voltage of the receiving end reaches a first voltage threshold during the fast charging stage.

8. A terminal device, characterized in that: include: The receiving end of the wireless charging system; The receiving end is used to implement the method according to any one of claims 1 to 6.

9. A terminal device, characterized in that: include: at least one processor; as well as a memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the method according to any one of claims 1 to 6.

10. A computer-readable storage medium, characterized in that include: The storage medium stores a computer program, which, when executed by a processor, implements the method according to any one of claims 1 to 6.

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