CN113054691A

CN113054691A - Wireless charging method of mobile terminal and mobile terminal

Info

Publication number: CN113054691A
Application number: CN201911369466.8A
Authority: CN
Inventors: 谭细金; 苏丹; 孙士友
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2021-06-29
Also published as: WO2021129128A1

Abstract

The application provides a wireless charging method of a mobile terminal and the mobile terminal, relates to the technical field of communication and wireless charging, and can realize automatic wireless charging between the mobile terminals. The specific scheme comprises the following steps: the first mobile terminal has the function of receiving wireless charging input of other equipment through a wireless charging coil and the reverse wireless charging function; the reverse wireless charging function is a function that the first mobile terminal wirelessly charges other mobile terminals through a wireless charging coil; wherein the first mobile terminal detects a wireless signal from the second mobile terminal; if the wireless signal meets the preset condition, the first mobile terminal automatically starts the reverse wireless charging function to wirelessly charge the second mobile terminal.

Description

Wireless charging method of mobile terminal and mobile terminal

Technical Field

The embodiment of the application relates to the technical field of communication and wireless charging, in particular to a wireless charging method of a mobile terminal and the mobile terminal.

Background

The battery is an indispensable device on the mobile terminal and is a tool capable of providing power and energy storage for the mobile terminal. In which a battery of the mobile terminal may store power by charging and then supply power to the mobile terminal by discharging.

Currently, a mobile terminal can charge a battery through two ways, namely wired charging and wireless charging. The mobile terminal (such as a mobile phone) can use the wireless charging base to perform wireless charging; and can also be used for wirelessly charging another mobile terminal (such as a mobile phone or a smart watch).

In a scenario that the mobile terminal wirelessly charges another mobile terminal, the mobile terminal can wirelessly charge the other mobile terminal only by manually starting a wireless charging function of the mobile terminal by a user. For example, taking the mobile phone 1 as the mobile phone 2 for wireless charging, the mobile phone 1 may start the wireless charging function in response to the user operation, and then wirelessly charge the mobile phone 2.

To sum up, the current wireless charging scheme cannot realize that one mobile terminal is the automatic wireless charging of another mobile terminal.

Disclosure of Invention

The embodiment of the application provides a wireless charging method of a mobile terminal and the mobile terminal, which can realize automatic wireless charging between the mobile terminals.

In a first aspect, the present application provides a wireless charging method for a mobile terminal, which may be applied to a first mobile terminal. The first mobile terminal not only has the function of receiving wireless charging input of other equipment through a wireless charging coil, but also has the reverse wireless charging function. The reverse wireless charging function is a function that the first mobile terminal wirelessly charges other mobile terminals through the wireless charging coil.

The method may include: the first mobile terminal detecting a wireless signal (e.g., a short-range wireless signal) from the second mobile terminal; the first mobile terminal may determine whether the wireless signal satisfies a predetermined condition. If the wireless signal meets the preset condition, the first mobile terminal can automatically start the reverse wireless charging function to wirelessly charge the second mobile terminal.

For example, the wireless signal satisfying the preset condition may include: the signal intensity of the wireless signal is greater than a preset intensity threshold; or the time when the first mobile terminal receives the wireless signal is within a preset time range. From the position relationship between the first mobile terminal and the second mobile terminal, when the distance between the first mobile terminal and the second mobile terminal is smaller than the preset distance threshold, the first mobile terminal may receive a wireless signal from the second mobile terminal, and the wireless signal may satisfy the preset condition. Generally, when a user wants to wirelessly charge a second mobile terminal using a first mobile terminal, the second mobile terminal is placed around the first mobile terminal (e.g., on the first mobile terminal) for a long time, so that the distance between the first mobile terminal and the second mobile terminal is less than a preset distance threshold. Therefore, if the wireless signal meets the preset condition, the user is indicated that the first mobile terminal is required to be used for wirelessly charging the second mobile terminal. In this case, the first mobile terminal may automatically turn on the reverse wireless charging function to wirelessly charge the second mobile terminal. In summary, by the method of the present application, automatic wireless charging between mobile terminals can be achieved.

With reference to the first aspect, in one possible design, the wireless signal is a bluetooth paging signal. The detecting, by the first mobile terminal, a wireless signal from the second mobile terminal may include: a first mobile terminal scans a Bluetooth paging signal; after receiving the bluetooth paging signal from the second mobile terminal, a Received Signal Strength Indication (RSSI) of the bluetooth paging signal from the second mobile terminal is detected.

In this design, the wireless signal meeting the preset condition may specifically include: the RSSI of the Bluetooth paging signal received by the first mobile terminal from the second mobile terminal is greater than a preset intensity threshold.

The RSSI of the Bluetooth paging signal is used for representing the signal strength of the first mobile terminal receiving the Bluetooth paging signal. The RSSI of the bluetooth paging signal is inversely proportional to the distance between the mobile terminals. The farther the distance is, the smaller the RSSI of the Bluetooth paging signal is; the closer the distance, the greater the RSSI of the bluetooth paging signal. Therefore, if the RSSI of the bluetooth paging signal received by the first mobile terminal from the second mobile terminal is greater than the preset strength threshold, which indicates that the first mobile terminal is closer to the second mobile terminal, the user may have a need to wirelessly charge the second mobile terminal by using the first mobile terminal. In this case, the first mobile terminal may automatically turn on the reverse wireless charging function to wirelessly charge the second mobile terminal.

With reference to the first aspect, in another possible design manner, the wireless signal is a bluetooth signal from the second mobile terminal after the first mobile terminal establishes a bluetooth connection with the second mobile terminal. The detecting, by the first mobile terminal, the wireless signal from the second mobile terminal may specifically include: the first mobile terminal receives the Bluetooth signal from the second mobile terminal and detects the RSSI of the Bluetooth signal from the second mobile terminal.

In this design, the wireless signal meeting the preset condition may specifically include: the RSSI of the Bluetooth signal received by the first mobile terminal from the second mobile terminal is greater than the preset intensity threshold.

As can be seen from the above description in one design: if the RSSI of the bluetooth signal received by the first mobile terminal from the second mobile terminal is greater than the preset strength threshold, it indicates that the first mobile terminal is closer to the second mobile terminal, and the user may have a need to wirelessly charge the second mobile terminal by using the first mobile terminal. In this case, the first mobile terminal may automatically turn on the reverse wireless charging function to wirelessly charge the second mobile terminal.

With reference to the first aspect, in another possible design, the second mobile terminal may send a wireless signal (e.g., a broadcast bluetooth paging signal) multiple times. Thus, the first mobile terminal may receive a plurality of bluetooth signals from the second mobile terminal over a period of time. If the RSSI of the bluetooth signal received by the first mobile terminal from the second mobile terminal within a period of time (e.g., a first predetermined time) is greater than the predetermined strength threshold, the probability that the user wants to wirelessly charge the second mobile terminal using the first mobile terminal is high.

Based on this, the wireless signal satisfies the preset condition, which may include: the RSSI of the wireless signal received by the first mobile terminal from the second mobile terminal is greater than a preset strength threshold value within a first preset time. Therefore, misjudgment of whether the first mobile terminal is wirelessly charged by the second mobile terminal or not can be reduced, and the wireless charging efficiency can be improved.

With reference to the first aspect, in another possible design manner, to avoid a misjudgment on whether the first mobile terminal wirelessly charges the second mobile terminal due to the following reasons, the wireless signal meeting the preset condition includes: the RSSI of N wireless signals received by the first mobile terminal from the second mobile terminal is greater than the preset intensity threshold within a first preset time; wherein, N is a preset positive integer.

The reason for causing the misjudgment of whether the first mobile terminal is wirelessly charged by the second mobile terminal may be: the distance between the first mobile terminal and the second mobile terminal is relatively short, so that the RSSI of 1 or 2 bluetooth paging signals received by the first mobile terminal from the second mobile terminal within a first preset time (for example, 2s) is greater than a preset intensity threshold. Then, the distance between the first mobile terminal and the second mobile terminal becomes large, so that the first mobile terminal cannot receive the bluetooth paging signal from the second mobile terminal.

In this design, when the RSSI of the N wireless signals received from the second mobile terminal is greater than the preset strength threshold within the first preset duration, the first mobile terminal may automatically start the reverse wireless charging function. Therefore, misjudgment of whether the first mobile terminal is wirelessly charged by the second mobile terminal or not can be reduced, and the wireless charging efficiency can be improved.

With reference to the first aspect, in another possible design manner, the wireless signal is a feedback signal of a Near Field Communication (NFC) probe signal. The detecting, by the first mobile terminal, a wireless signal from a second mobile terminal may include: the first mobile terminal periodically sends the NFC detection signal and detects a feedback signal of the NFC detection signal. Wherein, the wireless signal satisfies the preset condition and includes: and the first mobile terminal receives the feedback signal within a second preset time period from the sending of the NFC detection signal.

It can be understood that if the first mobile terminal receives the feedback signal within the second preset time period from the sending of the NFC probe signal, it indicates that the second mobile terminal is closer to the first mobile terminal, and the user has a need to wirelessly charge the second mobile terminal by using the first mobile terminal. In this case, the first mobile terminal may automatically turn on the reverse wireless charging function to wirelessly charge the second mobile terminal.

With reference to the first aspect, in another possible design manner, the periodically transmitting, by the first mobile terminal, an NFC probe signal by using a near field communication technology may include: the method comprises the steps that a first mobile terminal periodically sends an NFC detection signal according to a first preset period in a bright screen scene; and the first mobile terminal periodically sends the NFC detection signal according to a second preset period in the screen-off scene. The first preset period is smaller than the second preset period.

With reference to the first aspect, in another possible design manner, the NFC antenna of the first mobile terminal and the wireless charging coil of the first mobile terminal are disposed at different positions of the first mobile terminal. Before the first mobile terminal automatically starts the reverse wireless charging function and wirelessly charges the second mobile terminal, the method of the application further includes: and the first mobile terminal sends out prompt information. The prompt message is used for prompting a user to place the second mobile terminal at the position of the wireless charging coil of the first mobile terminal.

It can be understood that under the condition that the NFC antenna and the wireless charging coil are disposed at different positions of the first mobile terminal, if the second mobile terminal is not disposed at the position of the wireless charging coil of the first mobile terminal, the first mobile terminal cannot wirelessly charge the second mobile terminal. First mobile terminal sends above-mentioned prompt message, can indicate the user to place second mobile terminal in first mobile terminal's wireless charging coil position department, can promote wireless efficiency of charging like this.

With reference to the first aspect, in another possible design manner, the automatically starting, by the first mobile terminal, the reverse wireless charging function to wirelessly charge the second mobile terminal may include: if the first mobile terminal determines that no metal object is placed on the wireless charging coil of the first mobile terminal, the first mobile terminal automatically starts a reverse wireless charging function to wirelessly charge the second mobile terminal.

It can be understood that, in the case that there is a metallic foreign object around the first mobile terminal, the alternating electromagnetic field generated by the wireless charging coil of the first mobile terminal causes the metallic foreign object to generate heat. If the amount of heat generated by the metal foreign matter is large, inflammable matter around the metal foreign matter may be burned, and there is a potential safety hazard. By the method of the design mode, the potential safety hazards can be eliminated.

With reference to the first aspect, in another possible design manner, the automatically starting, by the first mobile terminal, a reverse wireless charging function to wirelessly charge the second mobile terminal may include: the first mobile terminal transmits an Internet packet detector ping message through a wireless charging coil; if the first mobile terminal receives a signal strength message from the second mobile terminal through the wireless charging coil within a third preset time length, the first mobile terminal enters an identification and configuration stage to wait for receiving a configuration message from the second mobile terminal; the configuration message is used for indicating the maximum power required by the second mobile terminal for wireless charging; the first mobile terminal receives the configuration message from the second mobile terminal through the wireless charging coil, the output parameters of the wireless charging coil of the first mobile terminal are configured according to the configuration message, and the second mobile terminal is wirelessly charged through the wireless charging coil.

With reference to the first aspect, in another possible design, after the first mobile terminal enters the identification and configuration stage, the method of the present application further includes: the first mobile terminal receives an Identification (ID) message from the second mobile terminal through a wireless charging coil of the first mobile terminal. The ID message includes a Vendor ID (VID) and a product serial number of the second mobile terminal; the first mobile terminal judges whether the second mobile terminal is a pre-configured mobile terminal according to the ID message; and if the second mobile terminal is a pre-configured mobile terminal, the first mobile terminal wirelessly charges the second mobile terminal through the wireless charging coil.

By the method of the design mode, the first mobile terminal can selectively wirelessly charge the pre-configured mobile terminal. In this way, the current consumption of the first mobile terminal can be reduced.

In a second aspect, an embodiment of the present application provides a mobile terminal, which is the first mobile terminal. The first mobile terminal includes a wireless charging coil, a wireless communication module, a memory, and one or more processors. The wireless charging coil, the wireless communication module, the memory and the processor are coupled.

The wireless charging coil is used for receiving wireless charging input of other equipment and charging the first mobile terminal. The wireless charging coil is also used for transmitting wireless charging signals to other mobile terminals to realize the reverse wireless charging function of the first mobile terminal. The memory is for storing computer program code. The computer program code includes computer instructions. When the computer instructions are executed by the processor, the mobile terminal (i.e. the first mobile terminal) performs the method as described in the first aspect and any one of its possible designs.

In a third aspect, an embodiment of the present application provides a chip system, where the chip system is applied to a mobile terminal including a wireless charging coil, a wireless communication module, and a memory, such as the mobile terminal according to the second aspect. The system-on-chip includes one or more interface circuits and one or more processors. The interface circuit and the processor are interconnected by a line. The interface circuit is used for receiving signals from the memory of the mobile terminal and sending the received signals to the processor. The signal may comprise computer instructions stored in a memory. The mobile terminal may perform the method according to the first aspect and any of its possible designs when the processor executes the computer instructions.

In a fourth aspect, embodiments of the present application provide a computer-readable storage medium including computer instructions, which, when executed on a mobile terminal, cause the mobile terminal to perform the method according to the first aspect and any one of the possible design manners thereof.

In a fifth aspect, embodiments of the present application provide a computer program product, which when run on a computer, causes the computer to perform the method according to the first aspect and any one of its possible designs.

It should be understood that beneficial effects that can be achieved by the electronic device according to the second aspect and any possible design manner thereof, the chip system according to the third aspect, the computer-readable storage medium according to the fourth aspect, and the computer program product according to the fifth aspect can be referred to as the beneficial effects of the first aspect and any possible design manner thereof, and are not repeated herein.

Drawings

Fig. 1 is a schematic architecture diagram of a wireless charging system according to an embodiment of the present disclosure;

fig. 2A is a schematic diagram of a wireless charging terminal interface provided in the prior art;

fig. 2B is a schematic diagram illustrating a wireless charging principle according to an embodiment of the present disclosure;

fig. 3 is a schematic diagram of a hardware structure of a mobile phone according to an embodiment of the present disclosure;

fig. 4A is a flowchart of a wireless charging method for a mobile terminal according to an embodiment of the present disclosure;

fig. 4B is a flowchart of a wireless charging method for a mobile terminal according to an embodiment of the present disclosure;

fig. 5 is a schematic diagram of bluetooth signal transmission according to an embodiment of the present application;

fig. 6 is a flowchart of another wireless charging method for a mobile terminal according to an embodiment of the present disclosure;

fig. 7A is a flowchart of another wireless charging method for a mobile terminal according to an embodiment of the present disclosure;

fig. 7B is a schematic diagram of a wireless charging terminal interface according to an embodiment of the present disclosure;

fig. 8 is a flowchart of another wireless charging method for a mobile terminal according to an embodiment of the present disclosure;

fig. 9A is a flowchart of another wireless charging method for a mobile terminal according to an embodiment of the present disclosure;

fig. 9B is a flowchart of another wireless charging method for a mobile terminal according to an embodiment of the present disclosure;

fig. 10 is a flowchart of another wireless charging method for a mobile terminal according to an embodiment of the present disclosure;

fig. 11 is a schematic view of another wireless charging terminal interface according to an embodiment of the present disclosure;

fig. 12 is a schematic waveform diagram of a ping signal provided in an embodiment of the present application;

fig. 13 is a schematic structural diagram of a chip system according to an embodiment of the present disclosure.

Detailed Description

The embodiment of the application provides a wireless charging method of a mobile terminal, which can be applied to the wireless charging process of one mobile terminal for another mobile terminal. For example, please refer to fig. 1, which shows a schematic structural diagram of a wireless charging system according to an embodiment of the present application. As shown in fig. 1, the wireless charging system 100 may include a first mobile terminal 110 and a second mobile terminal 120. Wherein, the first mobile terminal 110 may automatically wirelessly charge the second mobile terminal 120.

In the embodiment of the present application, the wireless charging coil of the first mobile terminal 110 is coupled to the wireless charging coil of the second mobile terminal 120, and the first mobile terminal 110 may transmit a wireless charging signal to the second mobile terminal 120 through the wireless charging coil to wirelessly charge the second mobile terminal 120. In the embodiment of the present application, a function of the first mobile terminal 110 wirelessly charging the second mobile terminal 120 through the wireless charging coil is referred to as a "reverse wireless charging function".

Of course, the first mobile terminal 110 may also receive a wireless charging input of another device through the wireless charging coil. For example, the other device may be a wireless charging base of the first mobile terminal 110; alternatively, the other device may be another mobile terminal (e.g., a third mobile terminal) that supports wireless charging.

The first mobile terminal 110 may support wired charging. The wired charging described in the embodiments of the present application refers to: the charging interface of the first mobile terminal 100 may be connected to a wired charger (also referred to as a power adapter) to receive a charging input of the wired charger. For example, the charging interface may be a Universal Serial Bus (USB) interface.

It should be noted that the method of the embodiment of the present application is applied to the process of wirelessly charging the second mobile terminal 120 by the first mobile terminal 110.

For example, the first mobile terminal 110 in the embodiment of the present application may be a mobile phone, a tablet computer, a desktop computer, a laptop computer, a handheld computer, a notebook computer, an ultra-mobile personal computer (UMPC), a netbook, a cellular phone, a Personal Digital Assistant (PDA), an Augmented Reality (AR) \ Virtual Reality (VR) device, a vehicle-mounted device, or the like, which can wirelessly charge other mobile terminals, and the embodiment of the present application does not particularly limit the specific form of the first mobile terminal 110.

The second mobile terminal 120 in this embodiment may be a mobile phone, a wearable device (e.g., a smart watch, etc.), a True Wireless Stereo (TWS) headset, a tablet computer, a laptop, a handheld computer, a notebook computer, an ultra-mobile personal computer (UMPC), a netbook, a mobile terminal that can receive wireless charging input of other devices, such as a cellular phone, a Personal Digital Assistant (PDA), an Augmented Reality (AR) Virtual Reality (VR) device, etc., and the embodiment of this application does not specially limit the specific form of the second mobile terminal 120.

For convenience of understanding, in the embodiment of the present application, with reference to the drawings, taking as an example that the first mobile terminal 110 shown in fig. 1 is a mobile phone 210, and the second mobile terminal 120 shown in fig. 1 is a smart watch 220, a principle of wirelessly charging the second mobile terminal 120 by the first mobile terminal 110 is described.

Please refer to fig. 2B, which illustrates a schematic diagram of a charging circuit structure of a mobile phone 210 and a smart watch 220 according to an embodiment of the present disclosure.

As shown in fig. 2B, the handset 210 includes: processor 211, battery 212, charging control module 213, wireless charging control module 214, wireless charging coil 215, and charging interface 216. As shown in fig. 2B, the smart watch 220 includes: processor 221, battery 222, charging control module 223, wireless charging control module 224, wireless charging coil 225, and charging interface 226.

In the embodiment of the present application, the mobile phone 210 serves as a transmitting end of the wireless charging signal, the smart watch 220 serves as a receiving end of the wireless charging signal, and the mobile phone 210 wirelessly charges the smart watch 220. Thus, as shown in fig. 2B, the wireless charging coil 215 of the cell phone 210 may be referred to as a transmit (Tx) coil and the wireless charging coil 225 of the smart watch 220 may be referred to as a receive (Rx) coil.

Generally, the reverse wireless charging function of the handset 210 is off by default. The cell phone 210 may receive a user's click operation on the "battery" option 201 in the setting interface shown in (a) in fig. 2A, and in response to the click operation, the cell phone 210 may display the battery interface 202 shown in (b) in fig. 2A. The battery interface 202 includes a "wireless reverse charging" switch 203. In response to the user's on operation of the "wireless reverse charging" switch 203, the cell phone 210 may start a reverse wireless charging function.

After the reverse wireless charging function of the mobile phone 210 is turned on, the processor 221 of the mobile phone 210 may control the charging control module 213 to receive the input of the battery 212 and input the dc signal to the wireless charging control module 214. The wireless charging control module 214 may convert the direct current signal into an alternating electrical signal and then input the alternating electrical signal to the wireless charging coil 215. The wireless charging coil 215 may generate an alternating electromagnetic field in response to the alternating electrical signal.

Wireless charging coil 225 of smart watch 220 is coupled with wireless charging coil 215 of cell phone 210. After the wireless charging function of the smart watch 220 is turned on, the processor 221 of the smart watch 220 may control the wireless charging coil (i.e., Rx coil) 225 to start operating. The wireless charging coil (i.e., Rx coil) 225 induces an alternating electromagnetic field emitted from the wireless charging coil (i.e., Tx coil) 215, may generate an alternating electrical signal, and inputs the alternating electrical signal to the wireless charging control module 224. The wireless charging control module 224 may rectify the alternating current signal into a direct current signal and input the direct current signal to the charging control module 223. The charging control module 223 may charge the battery 222 according to the dc signal.

The wireless charging control module 214 and the wireless charging control module 224 may include matching circuits. The matching circuit may comprise a combination of capacitors. The matching circuit in the wireless charging control module 214 is used to form LC resonance with the wireless charging coil 215 to improve the transmission efficiency of the wireless charging coil 215. The matching circuit in the wireless charging control module 224 is used to form an LC resonance with the wireless charging coil 225 to improve the reception efficiency of the wireless charging coil 225.

Of course, the mobile phone 210 may also receive a wireless charging input from another device through the wireless charging coil 215, that is, the mobile phone 210 supports forward wireless charging. The forward wireless charging principle of the mobile phone 210 may refer to a wireless charging principle of the smart watch 220 in a wireless charging process of the smart watch 220 by the mobile phone 210. The handset 210 may also support wired charging. For example, as shown in fig. 2B, the processor 211 of the mobile phone 210 is connected to the charging interface 216 for detecting whether there is a charging input (i.e., a wired charging input) on the charging interface 216. It is appreciated that when power adapter 217 (i.e., a wired charger) connected to a power source is connected to charging interface 216, processor 211 may detect that there is a charging input on charging interface 216. At this time, the processor 211 may communicate with the charging control module 213, and perform parameter configuration on the charging control module 213, so that the charging control module 213 charges the battery 212 according to the parameter configuration. Specifically, the charging control module 213 is connected to the charging interface 216, and is configured to receive a charging input from the power adapter 217 through the charging interface 216 to charge the battery 212. For example, the charging interface 216 may be a USB interface.

The smart watch 220 may also support wired charging. For example, as shown in fig. 2B, processor 221 of smart watch 220 is connected to charging interface 226. The charging interface 226 is used for connecting the power adapter 227 to charge the smart watch 220 in a wired manner. When the power adapter 227 connected to the power supply is connected to the charging interface 226, the principle that each device in the smart watch 220 charges the battery 222 alternately may refer to the wired charging principle of the mobile phone 210, which is not described herein again in this embodiment of the present application.

It should be noted that fig. 2B only shows a schematic diagram of a charging circuit structure of the mobile phone 210 and the smart watch 220. The charging circuit structure of the mobile terminal in the embodiment of the present application includes, but is not limited to, the structure shown in fig. 2B. For example, the functions of the charging control module 213 and the wireless charging control module 214 shown in fig. 2B may be implemented by being integrated into one charging management module. Also, the charging circuit structures of the cell phone 210 and the smart watch 220 may be different.

Please refer to fig. 3, which is a schematic structural diagram of a mobile terminal (e.g., the first mobile terminal 110 or the second mobile terminal 120) according to an embodiment of the present disclosure. As shown in fig. 3, the mobile terminal 300 may include a processor 310, an external memory interface 320, an internal memory 321, a Universal Serial Bus (USB) interface 330, a charging management module 340, a battery 341, a wireless charging coil 342, an antenna 1, an antenna 2, a mobile communication module 350, a wireless communication module 360, an audio module 370, a speaker 370A, a receiver 370B, a microphone 370C, an earphone interface 370D, a sensor module 380, a button 390, a motor 391, an indicator 392, a camera 393, a display 394, and a Subscriber Identification Module (SIM) card interface 395, etc.

The sensor module 380 may include a pressure sensor, a gyroscope sensor, an air pressure sensor, a magnetic sensor, an acceleration sensor, a distance sensor, a proximity light sensor, a fingerprint sensor, a temperature sensor, a touch sensor, an ambient light sensor, a bone conduction sensor, and the like.

The mobile terminal 300 shown in fig. 3 may be, for example, the handset 210 shown in fig. 2B. When the mobile terminal 300 is the mobile phone 210, the processor 310 shown in fig. 3 is the processor 211 of the mobile phone 210, the battery 341 is the battery 212 of the mobile phone 210, the charging management module 340 includes the charging control module 213 and the wireless charging control module 214 of the mobile phone 210, the wireless charging coil 342 is the wireless charging coil 215 of the mobile phone 210, and the USB interface 330 is the charging interface 216 of the mobile phone 210.

For example, the mobile terminal 300 shown in fig. 3 may be the smart watch 220 shown in fig. 2B. When the mobile terminal 300 is the smart watch 220, the processor 310 shown in fig. 3 is the processor 221 of the smart watch 220, the battery 341 is the battery 222 of the smart watch 220, the charging management module 340 includes the charging control module 223 and the wireless charging control module 224 of the smart watch 220, the wireless charging coil 342 is the wireless charging coil 225 of the smart watch 220, and the USB interface 330 is the charging interface 226 of the smart watch 220.

It is to be understood that the illustrated structure of the embodiment of the present invention does not specifically limit the mobile terminal 300. In other embodiments of the present application, the mobile terminal 300 may include more or fewer components than shown, or some components may be combined, some components may be split, or a different arrangement of components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

Processor 310 may include one or more processing units, such as: the processor 310 may include an Application Processor (AP), a modem processor, a Graphics Processing Unit (GPU), an Image Signal Processor (ISP), a controller, a memory, a video codec, a Digital Signal Processor (DSP), a baseband processor, and/or a neural-Network Processing Unit (NPU), etc. The different processing units may be separate devices or may be integrated into one or more processors. For example, in the embodiment of the present application, the processor 310 (i.e., the processor 211 or the processor 221 shown in fig. 2B) may be an application processor AP.

The controller may be, among other things, a neural center and a command center of the mobile terminal 300. The controller can generate an operation control signal according to the instruction operation code and the timing signal to complete the control of instruction fetching and instruction execution.

A memory may also be provided in the processor 310 for storing instructions and data. In some embodiments, the memory in the processor 310 is a cache memory. The memory may hold instructions or data that have just been used or recycled by the processor 310. If the processor 310 needs to reuse the instruction or data, it can be called directly from the memory. Avoiding repeated accesses reduces the latency of the processor 310, thereby increasing the efficiency of the system.

In some embodiments, processor 310 may include one or more interfaces. The interface may include an integrated circuit (I2C) interface, an integrated circuit built-in audio (I2S) interface, a Pulse Code Modulation (PCM) interface, a universal asynchronous receiver/transmitter (UART) interface, a Mobile Industry Processor Interface (MIPI), a general-purpose input/output (GPIO) interface, a Subscriber Identity Module (SIM) interface, and/or a USB interface, etc.

The USB interface 330 is an interface conforming to the USB standard specification, and may specifically be a Mini USB interface, a Micro USB interface, a USB Type C interface, or the like. The USB interface 330 may be used to connect a charger (e.g., the voltage adapter 217 shown in fig. 2B) to charge the mobile terminal 300, and may also be used to transmit data between the mobile terminal 300 and peripheral devices. And the earphone can also be used for connecting an earphone and playing audio through the earphone. The interface may also be used to connect other electronic devices or mobile terminals, such as AR devices and the like.

It should be understood that the connection relationship between the modules according to the embodiment of the present invention is only illustrative, and is not limited to the structure of the mobile terminal 300. In other embodiments of the present application, the mobile terminal 300 may also adopt different interface connection manners or a combination of multiple interface connection manners in the above embodiments.

The charging management module 340 is configured to receive charging input from a charger. The charger may be a wireless charger (such as a wireless charging cradle of the mobile terminal 300 or other devices capable of wirelessly charging the mobile terminal 300), or may be a wired charger (such as the voltage adapter 217 or the voltage adapter 227 shown in fig. 2B).

In some embodiments, the mobile terminal 300 may support wired charging. Specifically, the charging management module 340 may receive a charging input of the wired charger through the USB interface 330.

In other embodiments, the mobile terminal 300 may support forward wireless charging. The charging management module 340 may receive a wireless charging input through the wireless charging coil 342 of the mobile terminal 300. Specifically, the charging management module 340 is connected to the wireless charging coil 342 via the matching circuit 443. Wireless charging coil 342 may be coupled to the wireless charging coil of the wireless charger to induce an alternating electromagnetic field emitted by the wireless charging coil of the wireless charger to produce an alternating electrical signal. The alternating electrical signal generated by the wireless charging coil 342 is transmitted to the charging management module 340 through the matching circuit 443 to wirelessly charge the battery 341.

The charging management module 340 may also supply power to the mobile terminal 300 while charging the battery 341. The charge management module 340 receives input from the battery 341 and supplies power to the processor 310, the internal memory 321, the external memory, the display 394, the camera 393, and the wireless communication module 360. The charge management module 340 may also be used to monitor parameters of the battery 341, such as battery capacity, battery cycle number, and battery state of health (leakage, impedance). In some other embodiments, the charging management module 340 may also be disposed in the processor 310.

In other embodiments, the mobile terminal 300 may support wireless charging. Specifically, the charging management module 340 may further receive an input of the battery 341, and convert a dc signal input by the battery 341 into an ac signal. The ac power signal is transmitted to the wireless charging coil 342 through the matching circuit 443. The receipt of the alternating current signal by wireless charging coil 342 may generate an alternating electromagnetic field. The wireless charging coils of other mobile terminals induce the alternating electromagnetic field, and wireless charging can be carried out. That is, the mobile terminal 300 may also wirelessly charge other mobile terminals.

The mobile terminal 300 performs the detailed description of the wired charging, the forward wireless charging, and the wireless charging, which may refer to the introduction of the wired charging, the forward wireless charging, and the wireless charging principle of the mobile phone 210 in the above example, and the embodiment of the present application is not described herein again.

The wireless communication function of the mobile terminal 300 may be implemented by the antenna 1, the antenna 2, the mobile communication module 350, the wireless communication module 360, a modem processor, a baseband processor, and the like.

The antennas 1 and 2 are used for transmitting and receiving electromagnetic wave signals. Each antenna in the mobile terminal 300 may be used to cover a single or multiple communication bands. Different antennas can also be multiplexed to improve the utilization of the antennas. For example: the antenna 1 may be multiplexed as a diversity antenna of a wireless local area network. In other embodiments, the antenna may be used in conjunction with a tuning switch.

The mobile communication module 350 may provide a solution including 2G/3G/4G/5G wireless communication applied on the mobile terminal 300. The wireless communication module 360 may provide a solution for wireless communication applied to the mobile terminal 300, including Wireless Local Area Networks (WLANs) (e.g., wireless fidelity (Wi-Fi) networks), Bluetooth (BT), Global Navigation Satellite System (GNSS), Frequency Modulation (FM), NFC, Infrared (IR), and the like. In some embodiments, antenna 1 of the mobile terminal 300 is coupled to the mobile communication module 350 and antenna 2 is coupled to the wireless communication module 360 such that the mobile terminal 300 can communicate with networks and other devices through wireless communication techniques.

The mobile terminal 300 implements a display function through the GPU, the display 394, and the application processor, etc. The GPU is an image processing microprocessor coupled to a display 394 and an application processor. The GPU is used to perform mathematical and geometric calculations for graphics rendering. The processor 310 may include one or more GPUs that execute program instructions to generate or alter display information.

The display screen 394 is used to display images, video, and the like. The display screen 394 includes a display panel. In some embodiments, the mobile terminal 300 may include 1 or N display screens 394, N being a positive integer greater than 1.

The mobile terminal 300 may implement a photographing function through the ISP, the camera 393, the video codec, the GPU, the display 394, the application processor, and the like. The ISP is used to process the data fed back by the camera 393. In some embodiments, the ISP may be located in camera 393. Camera 393 is used to capture still images or video. In some embodiments, the mobile terminal 300 may include 1 or N cameras 393, N being a positive integer greater than 1.

The external memory interface 320 may be used to connect an external memory card, such as a Micro SD card, to extend the memory capability of the mobile terminal 300. The external memory card communicates with the processor 310 through the external memory interface 320 to implement a data storage function. For example, files such as music, video, etc. are saved in an external memory card.

The internal memory 321 may be used to store computer-executable program code, which includes instructions. The processor 310 executes various functional applications of the mobile terminal 300 and data processing by executing instructions stored in the internal memory 321. In addition, the internal memory 321 may include a high-speed random access memory, and may further include a nonvolatile memory, such as at least one magnetic disk storage device, a flash memory device, a universal flash memory (UFS), and the like.

The mobile terminal 300 may implement an audio function through the audio module 370, the speaker 370A, the receiver 370B, the microphone 370C, the earphone interface 370D, and the application processor. Such as music playing, recording, etc.

The audio module 370 is used to convert digital audio information into an analog audio signal output and also to convert an analog audio input into a digital audio signal. In some embodiments, the audio module 370 may be disposed in the processor 310, or some functional modules of the audio module 370 may be disposed in the processor 310. The speaker 370A, also called a "horn", is used to convert the audio electrical signal into an acoustic signal. The receiver 370B, also called "earpiece", is used to convert the electrical audio signal into an acoustic signal. Microphone 370C, also known as a "microphone," is used to convert sound signals into electrical signals. The mobile terminal 300 may be provided with at least one microphone 370C. The headphone interface 370D is used to connect wired headphones. The headset interface 370D may be the USB interface 330, or may be a 3.5mm open mobile electronic device platform (OMTP) standard interface, a cellular telecommunications industry association (cellular telecommunications industry association of the USA, CTIA) standard interface.

Keys 390 include a power-on key, a volume key, etc. The keys 390 may be mechanical keys. Or may be touch keys. The mobile terminal 300 may receive a key input, and generate a key signal input related to user setting and function control of the mobile terminal 300. The motor 391 may generate a vibration cue. The motor 391 may be used for both incoming call vibration prompting and touch vibration feedback. Indicator 392 may be an indicator light that may be used to indicate a state of charge, a change in charge, or a message, missed call, notification, etc. The SIM card interface 395 is for connecting a SIM card. The SIM card can be brought into and out of contact with the mobile terminal 300 by being inserted into and pulled out of the SIM card interface 395. The mobile terminal 300 may support 1 or N SIM card interfaces, where N is a positive integer greater than 1. The SIM card interface 195 may support a Nano SIM card, a Micro SIM card, a SIM card, etc. In some embodiments, the mobile terminal 300 employs eSIM, namely: an embedded SIM card. The eSIM card may be embedded in the mobile terminal 300 and may not be separated from the mobile terminal 300.

The embodiment of the present application provides a wireless charging method for a mobile terminal, which may be applied to a process in which a first mobile terminal 110 wirelessly charges a second mobile terminal 120 shown in fig. 1. For example, in the embodiment of the present application, the first mobile terminal 110 shown in fig. 1 is taken as a mobile phone 210, and the second mobile terminal 120 is taken as a smart watch 220, so as to describe a wireless charging method for a mobile terminal provided in the embodiment of the present application.

In this method, the cell phone 210 may detect a wireless signal (such as a bluetooth signal or a feedback signal of an NFC probe signal transmitted by the cell phone 210) from the smart watch 220; if the wireless signal from the smart watch 220 meets the preset condition, the mobile phone 210 may automatically start the reverse wireless charging function of the mobile phone 210 to wirelessly charge the smart watch 220. The mobile phone 210 may wirelessly charge the smart watch 220 according to a wireless charging protocol.

Illustratively, the bluetooth signal of the wireless signal; the wireless signal received by the mobile phone 210 from the smart watch 220 satisfies a preset condition, which may specifically be: the RSSI of the bluetooth signal is greater than a preset strength threshold. Alternatively, the wireless signal may be a feedback signal of an NFC probe signal; the wireless signal received by the mobile phone 210 from the smart watch 220 satisfies a preset condition, which may specifically be: the handset 210 receives the feedback signal within a preset time (e.g., a second preset time) from transmitting the NFC probe signal.

It is understood that, from the position relationship between the mobile phone 210 and the smart watch 220, when the distance between the mobile phone 210 and the smart watch 220 is smaller than the preset distance threshold, the mobile phone 210 may receive the wireless signal from the smart watch 220, and the wireless signal may satisfy the preset condition.

Generally, when a user wants to wirelessly charge the smart watch 220 using the cell phone 210, the smart watch 220 is placed on the cell phone 210 for a long time, so that the distance between the cell phone 210 and the smart watch 220 is smaller than a preset distance threshold. Therefore, if the distance between the mobile phone 210 and the smart watch 220 is less than the preset distance threshold within the first preset time period, it indicates that the user has a need to wirelessly charge the smart watch 220 using the mobile phone 210. At this time, the mobile phone 210 may automatically start the wireless power supply function, and wirelessly charge the smart watch 220 according to the wireless charging protocol. By the method, automatic wireless charging between the mobile terminals can be achieved.

For example, in a first application scenario, the method of the embodiment of the present application is described by taking the example that the wireless signal is a bluetooth paging signal and the bluetooth connection between the mobile phone 210 and the smart watch 220 is not established.

In the first application scenario, the condition that the wireless signal (i.e., the bluetooth paging signal) satisfies the preset condition includes: the RSSI of the bluetooth paging signal received by the cell phone 210 from the smart watch 220 is greater than the preset strength threshold. Specifically, as shown in fig. 4A, the wireless charging method for a mobile terminal provided in the embodiment of the present application may include steps 401 to 404.

Step 401, the smart watch 220 broadcasts a bluetooth paging signal.

After the bluetooth function of the smart watch 220 is turned on, the smart watch 220 may broadcast a bluetooth paging signal (i.e., page) in a frequency modulation manner. The bluetooth paging signal includes the bluetooth address of the smart watch 220. For example, the bluetooth address may be a Media Access Control (MAC) address. The bluetooth paging signal may further include a bluetooth name of the smart watch 220.

Step 402, the mobile phone 210 scans the bluetooth paging signal broadcast by other devices, and detects a Received Signal Strength Indication (RSSI) of the bluetooth paging signal.

Wherein the handset 210 may periodically scan (scan) bluetooth paging signals (i.e., pages) broadcast by other devices. The handset 210 may scan for bluetooth paging signals broadcast by other devices in a frequency modulated manner. When the handset 210 and the smart watch 220 synchronize to the same frequency hopping pattern (hopping pattern), the handset 210 scans for (i.e., receives) the bluetooth paging signal broadcast by the smart watch 220.

After the mobile phone 210 receives each bluetooth paging signal, the RSSI of the bluetooth paging signal may be calculated according to the signal power of the bluetooth paging signal received by the mobile phone 210. The RSSI of the bluetooth paging signal is used to characterize the signal strength of the bluetooth paging signal received by the mobile phone 210.

It is understood that when a bluetooth paging signal is transmitted from a transmitting end (e.g., the smart watch 220) and received by a receiving end (e.g., the cell phone 210), the signal power of the bluetooth paging signal may be attenuated. For example, the distance between the receiving end and the transmitting end affects the degree of attenuation of the signal power of the bluetooth paging signal. The larger the distance between the receiving end and the transmitting end is, the larger the attenuation of the signal power of the Bluetooth paging signal is; the smaller the distance between the receiving end and the transmitting end is, the smaller the attenuation of the signal power of the Bluetooth paging signal is.

The RSSI of the bluetooth paging signal received by the mobile phone 210 from the smart watch 220 is: 10 × logP. P represents the signal power of the bluetooth paging signal received by the handset 210. RSSI is in decibel milliwatts (dBm).

Assume that the smart watch 220 transmits the bluetooth paging signal at a transmission power of 1 milliwatt (mw). Then, ideally, i.e. the bluetooth paging signal is not attenuated, the signal power of the bluetooth paging signal received by the handset 210 is also 1 mw. The RSSI of the bluetooth paging signal is zero. However, the above ideal state does not exist in practical use; therefore, the RSSI value is substantially negative. The closer the receiving end is to the transmitting end, the larger the RSSI of the Bluetooth paging signal received by the receiving end is, and the closer the RSSI is to zero.

For example, as shown in fig. 5 (a), the cell phone 210 (i.e., the receiving end) may receive a bluetooth paging signal from the smart watch 220 (i.e., the transmitting end). The receiving end (e.g., the mobile phone 210) may calculate the distance d between the receiving end and the transmitting end according to the RSSI of the bluetooth paging signal received from the transmitting end (e.g., the smart watch 220) by using the following formula (1).

Wherein n is an environmental attenuation factor. The absolute value of the RSSI of the Bluetooth paging signal received by the receiving end from the transmitting end is represented by | RSSI |; k is the absolute value of RSSI of the Bluetooth paging signal received by the receiving terminal from the transmitting terminal when the distance between the transmitting terminal and the receiving terminal is 1 meter.

It should be noted that, after receiving the bluetooth paging signal broadcast by the smart watch 220, the mobile phone 210 may send a bluetooth response signal to the smart watch 220, so as to establish an asynchronous connection-oriented link (ACL) link with the smart watch 220. Handset 210 may then interact with smart watch 220 via an ACL link with control commands to configure a data Channel (Channel) between handset 210 and smart watch 220. Finally, the handset 210 may transmit bluetooth data (e.g., audio data, video data, or text data) with the smart watch 220 via a data channel.

From the above description it follows that: the RSSI of the bluetooth paging signal received by the handset 210 may characterize the distance between the handset 210 and the transmitting end of the bluetooth paging signal. It can be appreciated that the user may not place the smart watch 220 on the cell phone 210 for a long time until the user wants to wirelessly charge the smart watch 220 using the cell phone 210. Therefore, the distance between the mobile phone 210 and the smart watch 220 is short, and the mobile phone 210 is convenient for wirelessly charging the smart watch 220. Therefore, if the RSSI of the bluetooth paging signal received by the cell phone 210 from the smart watch 220 is large (e.g., greater than the preset strength threshold), which indicates that the cell phone 210 is close to the smart watch 220, the user may have a need to wirelessly charge the smart watch 220 using the cell phone 210.

In step 403, the mobile phone 210 determines whether the RSSI of the bluetooth paging signal received from the smart watch 220 is greater than a preset strength threshold.

Specifically, if the RSSI of the bluetooth paging signal received by the mobile phone 210 from the smart watch 220 is greater than the preset strength threshold, step 404 is executed; if the RSSI of the bluetooth paging signal received by the cell phone 210 from the smart watch 220 is less than or equal to the preset strength threshold, step 402 is performed.

Further, the smart watch 220 may broadcast the bluetooth paging signal multiple times. Therefore, the handset 210 may receive a plurality of bluetooth paging signals broadcast by the smart watch 220 during a period of time. If the RSSI of the bluetooth paging signals received by the mobile phone 210 from the smart watch 220 within a period of time (e.g., a first preset duration) is greater than a preset strength threshold, the possibility that the user wants to wirelessly charge the smart watch 220 using the mobile phone 210 is high. For example, as shown in fig. 4B, after step 402 described above, the method of the embodiment of the present application may include step 403 a. I.e. step 403 above may be replaced with step 403 a.

In step 403a, the mobile phone 210 determines whether the RSSI of the bluetooth paging signals received from the smart watch 220 within the first preset time period is greater than a preset strength threshold.

Specifically, if the RSSI of the bluetooth paging signal received by the mobile phone 210 from the smart watch 220 within the first preset duration is greater than the preset strength threshold, step 404 is executed; if the RSSI of any bluetooth paging signal received by the cell phone 210 from the smart watch 220 within the first preset time period is less than or equal to the preset strength threshold, step 402 is executed.

For example, the first preset time period may be any time length such as 2 seconds(s), 3s or 5 s. The mobile phone 210 may determine whether the RSSI of each received bluetooth paging signal is greater than a preset strength threshold, so as to determine whether the RSSI of the bluetooth paging signal received by the mobile phone 210 from the smart watch 220 within a first preset time period is greater than the preset strength threshold.

For example, in this embodiment of the application, a specific implementation process of step 403a is described by taking as an example that the mobile phone 210 determines whether the RSSI of the bluetooth paging signal received from the smart watch 220 is greater than a preset strength threshold. After the bluetooth function of the mobile phone 210 is turned on, bluetooth paging signals broadcast by other devices can be scanned; handset 210 may then perform steps a-e to implement the functionality of step 403 a. For example, step 403a may include steps a-e shown in FIG. 6.

Step a: if the mobile phone 210 receives the bluetooth paging signal from the smart watch 220, it is determined whether the RSSI of the bluetooth paging signal is greater than a preset strength threshold.

If the RSSI of the Bluetooth paging signal received in the step a is greater than a preset intensity threshold value, executing a step b; and if the RSSI of the Bluetooth paging signal received in the step a is less than or equal to the preset intensity threshold value, continuing to execute the step a.

Step b: the cell phone 210 starts a timer for the smart watch 220, causing the timer to start timing.

The initial value of the timer may be 00:00: 00. After step b, the handset 210 may perform step c.

Step c: if the mobile phone 210 receives the bluetooth paging signal from the smart watch 220, it is determined whether the RSSI of the bluetooth paging signal is greater than a preset strength threshold.

If the RSSI of the Bluetooth paging signal received in the step c is greater than the preset intensity threshold value, continuing to execute the step d; and e, if the RSSI of the Bluetooth paging signal received in the step c is less than or equal to the preset intensity threshold, executing the step e.

Step d: the mobile phone 210 determines whether the timing duration of the timer is greater than or equal to a first preset duration.

Specifically, if the timing duration of the timer is less than a first preset duration, continuing to execute the step c; if the timing length of the timer is greater than or equal to the first preset length, step 404 is executed. Optionally, if the timed duration of the timer is greater than or equal to the first preset duration, the mobile phone 210 may further execute step e.

Step e: the handset 210 clears the timer.

After step e, the cell phone 210 may receive the bluetooth paging signal from the smart watch 220 again. For this case, the handset 210 may continue with steps a-e.

In some embodiments, the following may exist: the distance between the smart watch 220 and the mobile phone 210 is relatively short, so that the RSSI of 1 or 2 bluetooth paging signals received by the mobile phone 210 from the smart watch 220 within the first preset time period (e.g., 2s) is greater than the preset strength threshold. Then, the distance between the smart watch 220 and the cell phone 210 becomes large, so that the cell phone 210 cannot receive the bluetooth paging signal from the smart watch 220. Thus, the above-mentioned schemes of steps a to e may cause the mobile phone 210 to misjudge whether to wirelessly charge the smart watch 220.

For this case, if the RSSI of the N bluetooth paging signals received by the cell phone 210 from the smart watch 220 within the first preset time period is greater than the preset strength threshold, the cell phone 210 executes step 404. Wherein, N is a preset positive integer. N may be the number of bluetooth paging signals received from the transmitting end by the receiving end, which is obtained through multiple statistics under the following conditions. For example, N may be a positive integer greater than 2, such as N-3, N-5, or N-6. The above-mentioned situation is specifically: and within the first preset duration, the distance between the receiving end and the transmitting end is smaller than a preset distance threshold.

The above step 403a may include steps a to H shown in fig. 7A.

And B: the mobile phone 210 starts a timer for the smart watch 220, so that the timer starts to time; and starts a counter, the initial count value of which is 0 or 1.

And C: if the mobile phone 210 receives the bluetooth paging signal from the smart watch 220, it is determined whether the RSSI of the bluetooth paging signal is greater than a preset strength threshold.

If the RSSI of the Bluetooth paging signal received in the step C is larger than the preset intensity threshold value, continuing to execute the step D and the step E; and G and H are executed if the RSSI of the Bluetooth paging signal received in the step C is less than or equal to the preset intensity threshold value.

Step D: the count value of the counter is incremented by 1.

Step E: the mobile phone 210 determines whether the timing duration of the timer is greater than or equal to a first preset duration.

Specifically, if the timing duration of the timer is less than a first preset duration, continuing to execute the step C; and if the timing duration of the timer is greater than or equal to the first preset duration, executing the step F.

Step F: the handset 210 determines whether the counter value of the counter is equal to N.

After step F, if the count value of the counter is equal to N, the handset 210 may execute step 404; if the count value of the counter is not equal to N (e.g., less than N), the handset 210 may perform step C. Optionally, if the count value of the counter is equal to N, the handset 210 may further perform step G and step H.

Step G: the handset 210 clears the timer.

Step H: and the mobile phone clears the counter.

After steps G and H, the cell phone 210 may receive the bluetooth paging signal from the smart watch 220 again. For this case, the handset 210 may continue with steps a-H.

It should be noted that, as shown in fig. 5 (b), the mobile phone 210 may receive the bluetooth paging signal from the smart phone 220 through a straight line transmission, and may also receive the bluetooth paging signal from the smart phone 220 through an obstacle reflection transmission. Wherein the degree of attenuation of the bluetooth paging signal transmitted by reflection is greater than that of the bluetooth paging signal transmitted by straight line. That is, the parameters affecting the RSSI of the bluetooth paging signal include not only the distance between the receiving end and the transmitting end, but also the transmission mode (e.g., linear transmission or reflection transmission) of the bluetooth paging signal. Also, the RSSI of a bluetooth paging signal may be affected by the channel over which the bluetooth paging signal is transmitted. In summary, the parameters affecting the RSSI of the bluetooth paging signal include: the distance between the receiving end and the transmitting end, the transmission mode of the Bluetooth paging signal, the channel and other factors.

In this embodiment, the influence of the above factors on the RSSI of the bluetooth paging signal is considered comprehensively, and the mobile phone 210 may detect the RSSI of the plurality of bluetooth paging signals within the first preset duration, and use the average value of the RSSI of the plurality of bluetooth paging signals, and then compare whether the average value is greater than the preset intensity threshold. Alternatively, the handset 210 may detect the RSSI of the bluetooth paging signal on a fixed channel. Thus, the accuracy of the RSSI detected by the mobile phone 210 can be improved.

In some embodiments, after step 403a, if the RSSI of the bluetooth paging signals received by the cell phone 210 from the smart watch 220 within the first preset time period is greater than the preset strength threshold, the cell phone 210 may issue the first prompt message. The first prompt is used to request the user to confirm whether to wirelessly charge the smart watch 220. For example, as shown in fig. 7B, the smart watch 220 is close to the cell phone 210, and the distance between the smart watch 220 and the cell phone 210 is less than the preset distance threshold. The mobile phone 210 may display a first prompt 701 as shown in fig. 7B, such as "please confirm whether to wirelessly charge the smart watch using the mobile phone |)! ". The first prompt message 701 further includes a "yes" button and a "no" button.

In response to a first operation by the user, the handset 210 can perform step 404. In response to the second operation of the user, the mobile phone 210 may not perform steps 403a to 404 for a fourth preset duration. The first operation is used to trigger the mobile phone 210 to wirelessly charge the smart watch 220. For example, the first operation is a single-click operation of the yes button shown in fig. 7B by the user. The second operation is for triggering the cell phone 210 not to need to wirelessly charge the smart watch 220. For example, the second operation is a single-click operation of the user on the "no" button shown in fig. 7B. For example, the fourth preset time period may be any time period such as 1 hour, 2 hours, 3 hours, 6 hours or 24 hours.

Optionally, in order to remind the user to input the first operation or the second operation in time, the mobile phone 210 may send the second prompt information while sending the first prompt information. The second prompt message may be a preset ring tone or a vibration prompt.

In other embodiments, if the mobile phone 210 does not receive the first operation or the second operation within the fifth preset time period since the first prompt message is sent, the mobile phone 210 may not perform steps 403a to 404 within the fourth preset time period.

Step 404, the mobile phone 210 starts a reverse wireless charging function to wirelessly charge the smart watch 220.

The mobile phone 210 may start a reverse wireless charging function, and wirelessly charge the smart watch 220 according to a wireless charging protocol. Currently, Wireless charging technology (Wireless charging technology) may conform to any of Qi protocol, (Power matrices Alliance, PMA) protocol, or (Alliance for Wireless Power, A4WP) protocol. For example, in the embodiment of the present application, the wireless charging of the mobile terminal may follow the Qi protocol described above.

Illustratively, the mobile phone 210 starts a reverse wireless charging function to wirelessly charge the smart watch 220 (i.e., step 404), which may specifically include steps 801 to 808. For example, as shown in FIG. 8, step 404 may include steps 801-808.

Step 801: the mobile phone 210 determines whether a metal object is placed on the wireless charging coil of the mobile phone 210.

As can be seen from the above embodiments, the wireless charging control module 214 of the mobile phone 210 may include a matching circuit, and the matching circuit may include a capacitor combination. If a metal object is placed on the wireless charging coil of the mobile phone 210, the mobile phone 210 can detect that the voltage across the capacitor in the matching circuit changes. The metal object may be a wireless charging coil of the smart watch 220, or may be another metal foreign object. For example, the metallic foreign matter may be a coin.

Specifically, if the cell phone 210 determines that a metal object is placed on the wireless charging coil of the cell phone 210, the cell phone 210 can perform step 802. If the cell phone 210 determines that no metal object is placed on the wireless charging coil of the cell phone 210, then step 801 continues.

Step 802, the handset 210 transmits an Internet Packet detector (ping) message through the wireless charging coil.

The metal object may be a wireless charging coil of the smart watch 220, or may be another metal foreign object. The above ping message is used for foreign object detection. If the metal object is a wireless charging coil of the smart watch 220, the smart watch 220 may reply a response message of the ping message, such as a Signal Strength (Signal Strength) message, to the mobile phone 210. If the metal object is a metal foreign object, the mobile phone 210 will not receive the response message of the ping message.

It can be understood that, when there is a metal foreign object around the mobile phone 210, the metal foreign object generates heat by the alternating electromagnetic field generated by the wireless charging coil of the mobile phone 210. If the amount of heat generated by the metal foreign matter is large, inflammable matter around the metal foreign matter may be burned, and there is a potential safety hazard. To eliminate safety concerns, in some embodiments, the handset 210 may perform foreign object detection prior to wirelessly charging other devices.

Step 803, the smart watch 220 receives the ping message through the wireless charging coil.

Step 804, the smart watch 220 replies a Signal Strength message to the mobile phone 210 through the wireless charging coil.

The Signal Strength message may indicate a coupling degree between the wireless charging coil of the smart watch 220 and the wireless charging coil of the mobile phone 210, that is, whether the placement positions of the wireless charging coil of the smart watch 220 and the wireless charging coil of the mobile phone 210 are correct. The Signal Strength message may be referred to as a Signal Strength message.

Step 805, if the mobile phone 210 receives the Signal Strength message from the smart watch 220 within the third preset time period, the mobile phone enters an identification and Configuration (ID & Configuration) stage, and waits for receiving the ID message and the Configuration (Configuration) message from the smart watch 220.

The ID message may include the VID and the product serial number of the smart watch 220. The Configuration message is used to indicate the maximum power required for the smart watch 220 to wirelessly charge. The cell phone 210 may receive a Signal Strength message from the smart watch 220 through the wireless charging coil. The smart watch 220 may send an ID message and a Configuration message to the cell phone 210 through the wireless charging coil.

Step 806, the mobile phone 210 receives the ID message and the Configuration message from the smart watch 220 through the wireless charging coil, and adjusts the output parameter of the wireless charging coil of the mobile phone 210 according to the Configuration message to wirelessly charge the smart watch 220.

Wherein, the cell phone 210 may receive the ID message and the Configuration message from the smart watch 220 through the wireless charging coil. The ID message is used to indicate identity information such as a product model and a MAC address of the smart watch 220. The mobile phone 210 may recognize the product model and the MAC address of the smart watch 220 according to the ID message of the smart watch 220. In some embodiments, to avoid the mobile phone 210 consuming power for wirelessly charging other electronic products; the mobile phone 210 may identify the identity information of the smart watch 220 through the ID message, and may wirelessly charge the smart watch 220 if the smart watch 220 is a preconfigured mobile terminal; if the smart watch 220 is not a pre-configured mobile terminal, the cell phone 210 will not wirelessly charge the smart watch 220. The mobile phone 210 may compare the identity information of the smart watch 220 with the identity information of the preconfigured mobile terminal to determine whether the smart watch 220 is the preconfigured mobile terminal. The preconfigured identity information of the mobile terminal may include: product model, MAC address, and the like. It should be noted that the ID message is optional. In this case, the cell phone 210 may wirelessly charge the smart watch 220 as long as the distance between the cell phone 210 and the smart watch 220 is less than the preset distance threshold.

Step 807, the smart watch 220 sends a charging state (Charge Status) message to the mobile phone 210 during the wireless charging process. The Charge Status message is used to indicate the current power of the smart watch 220 and the maximum power required for wireless charging.

Step 808, the mobile phone 210 adjusts an output parameter of a wireless charging coil of the mobile phone 210 according to the Charge Status message, so as to wirelessly Charge the smart watch 220.

For example, the Charge Status message may indicate that the power of the smart watch 220 has reached a preset power threshold (e.g., 100% or 95%), and the cell phone 210 may stop wirelessly charging the smart watch 220.

It should be noted that, the method for the mobile phone 210 to wirelessly charge the smart watch 220 according to the wireless charging protocol includes, but is not limited to, the methods described in steps 801 to 808. For other methods for the mobile phone 210 to wirelessly charge the smart watch 220 according to the wireless charging protocol, reference may be made to detailed descriptions in the conventional technologies, which are not repeated herein in this embodiment of the present application.

The embodiment of the application provides a wireless charging method for a mobile terminal, and if RSSI of bluetooth paging signals received by a mobile phone 210 from a smart watch 220 within a first preset time is greater than a preset intensity threshold, the mobile phone 210 may automatically wirelessly charge the smart watch 220 according to a wireless charging protocol. In this way, automatic wireless charging between mobile terminals can be achieved.

In the process that the mobile phone 210 wirelessly charges the smart watch 220 according to the wireless charging protocol, the mobile phone 210 may interact with the smart watch 220 to complete foreign object detection, coil position confirmation, charging parameter negotiation, and the like. In the embodiment of the present application, the foreign object detection, the coil position confirmation, and the charging parameter negotiation may be referred to as secondary confirmation of wireless charging; the RSSI judgment of the bluetooth paging signal is referred to as a primary judgment of wireless charging. In the embodiment of the application, automatic wireless charging between the mobile terminals can be realized through the double judgment of the primary judgment and the secondary confirmation.

In a second application scenario, the method of the embodiment of the present application is described by taking an example that the wireless signal is a bluetooth signal and the mobile phone 210 and the smart watch 220 have established a bluetooth connection.

After the bluetooth connection is established between the mobile phone 210 and the smart watch 220, the mobile phone 210 and the smart watch 220 can communicate through the bluetooth connection. Through the bluetooth connection, the mobile phone 210 and the smart watch 220 may transmit service data such as audio data, video data, or text data. Moreover, even if there is no traffic data transmission between the mobile phone 210 and the smart watch 220, the mobile phone 210 and the smart watch 220 may transmit bluetooth control information, such as a bluetooth signal for detecting a quality parameter of a bluetooth connection. In the embodiment of the present application, the service data and the bluetooth control information are collectively referred to as a bluetooth signal.

As shown in fig. 9A, the wireless charging method for a mobile terminal provided in the embodiment of the present application may include steps 901 to 904.

Step 901, the smart watch 220 sends a bluetooth signal to the cell phone 210.

Step 902, the mobile phone receives the bluetooth signal from the smart watch 220 and detects the RSSI of the bluetooth signal.

The RSSI of the bluetooth signal is used to characterize the signal strength of the bluetooth signal received by the mobile phone 210. It will be appreciated that the bluetooth paging signal is transmitted from the transmitting end (e.g., smart watch 220) and received by the receiving end (e.g., cell phone 210), and the signal power of the bluetooth signal is attenuated. For example, the distance between the receiving end and the transmitting end affects the degree of attenuation of the signal power of the bluetooth signal. The larger the distance between the receiving end and the transmitting end is, the larger the attenuation of the signal power of the Bluetooth signal is; the smaller the distance between the receiving end and the transmitting end is, the smaller the attenuation of the signal power of the Bluetooth signal is.

It should be noted that, the influence of the distance between the receiving end and the transmitting end on the bluetooth signal may refer to the influence of the distance between the receiving end and the transmitting end on the bluetooth paging signal in the foregoing embodiment, and this embodiment of the present application is not described herein again.

In conjunction with the first application scenario, it can be seen that: if the RSSI of the bluetooth signals received by the mobile phone 210 from the smart watch 220 within a period of time (e.g., a first preset duration) is greater than a preset strength threshold, the possibility that the user wants to wirelessly charge the smart watch 220 using the mobile phone 210 is high. Specifically, the method according to the embodiment of the present application may further include step 903.

In step 903, the mobile phone 210 determines whether the RSSI of the bluetooth signals received from the smart watch 220 are all greater than a preset strength threshold.

Specifically, if the RSSI of the bluetooth signal received by the mobile phone 210 from the smart watch 220 is greater than the preset strength threshold, step 904 is executed; if the RSSI of the bluetooth signal received by the handset 210 from the smart watch 220 is less than or equal to the preset strength threshold, step 902 is executed. Optionally, as shown in fig. 9B, after step S902, the method of the embodiment of the present application may include step 903a, that is, step 903a may be replaced with step 903 a.

In step 903a, the mobile phone 210 determines whether the RSSI of the bluetooth signals received from the smart watch 220 in the first preset time period is greater than a preset strength threshold.

Specifically, if the RSSI of the bluetooth signal received by the mobile phone 210 from the smart watch 220 within the first preset time period is greater than the preset strength threshold, step 904 is executed; if the RSSI of any bluetooth signal received by the handset 210 from the smart watch 220 within the first preset time period is less than or equal to the preset strength threshold, step 902 is executed.

For example, the first preset time period may be any time length such as 2 seconds(s), 3s or 5 s. It should be noted that, in the step 903a, reference may be made to the detailed description of the step 403, and details are not described herein in this embodiment of the present application.

In some embodiments, after the step 903a, if the RSSI of the bluetooth signals received by the cell phone 210 from the smart watch 220 within the first preset time period is greater than the preset strength threshold, the cell phone 210 may send out the first prompt message. In response to a first operation of the first prompt by the user, the handset 210 can perform step 904. In response to the second operation of the user, the handset 210 may not perform any more steps 903 a-904 for a fourth preset duration.

It should be noted that, for the detailed description of the first prompt information, the first operation, and the second operation, reference may be made to related descriptions in the foregoing embodiments, and details are not repeated herein in this embodiment of the application.

In other embodiments, if the mobile phone 210 does not receive the first operation or the second operation within the fifth preset time period since the first prompt message is sent, the mobile phone 210 may not perform steps 903a to 904 within the fourth preset time period.

Step 904, the mobile phone 210 automatically starts the reverse wireless charging function to wirelessly charge the smart watch 220.

The mobile phone 210 may automatically start a reverse wireless charging function, and wirelessly charge the smart watch 220 according to a wireless charging protocol. It should be noted that, in step 904, reference may be made to the detailed description of step 404, which is not described herein again in this embodiment of the application.

The embodiment of the application provides a wireless charging method for a mobile terminal, and if RSSI of bluetooth signals received by a mobile phone 210 from a smart watch 220 within a first preset time is greater than a preset intensity threshold, the mobile phone 210 may automatically wirelessly charge the smart watch 220 according to a wireless charging protocol. In this way, automatic wireless charging between mobile terminals can be achieved.

In the process that the mobile phone 210 wirelessly charges the smart watch 220 according to the wireless charging protocol, the mobile phone 210 may interact with the smart watch 220 to complete foreign object detection, coil position confirmation, charging parameter negotiation, and the like. In the embodiment of the present application, the foreign object detection, the coil position confirmation, and the charging parameter negotiation may be referred to as secondary confirmation of wireless charging; the RSSI determination of the bluetooth signal is referred to as a primary determination of wireless charging. In the embodiment of the application, automatic wireless charging between the mobile terminals can be realized through the double judgment of the primary judgment and the secondary confirmation.

In a third application scenario, the method of the embodiment of the present application is described by taking the above-mentioned wireless signal as an NFC probe signal as an example. As shown in fig. 10, the wireless charging method for a mobile terminal according to the embodiment of the present application may include steps 1001 to 1003.

Step 1001, the mobile phone 210 periodically sends an NFC probe signal.

For example, the mobile phone 210 may send the NFC probe signal according to a first preset period in a bright screen scene. For example, the bright screen scene may be any scene in which the mobile phone 210 displays a lock screen interface, the mobile phone 210 displays a main interface (i.e., a desktop), or the mobile phone 210 displays any application interface. The mobile phone 210 may send the NFC probe signal according to a second preset period in the screen-off scene (i.e., the mobile phone 210 is blank).

For example, the first preset period may be any time length such as 500 milliseconds (ms), 400ms, 600ms, or 450 ms. The second predetermined period may be any time length such as 2 seconds(s), 3s, 1s or 1.5 s.

Step 1002, the mobile phone 210 detects a feedback signal of the NFC probe signal.

For example, in the embodiment of the present application, the mobile phone 210 is an active NFC device, and the smart watch 220 is an active NFC device or a passive NFC device. Wherein, the active NFC device may activate itself to send signals or data to other NFC devices. The passive NFC equipment cannot activate the passive NFC equipment to actively send signals or data to other NFC equipment; however, the feedback may be generated in response to a signal transmitted by the active NFC device.

For example, the mobile phone 210 is an active NFC device and the smart watch 220 is a passive NFC device. It is understood that in the case that the mobile phone 210 is close enough to the smart watch 220, for example, the distance between the mobile phone 210 and the smart watch 220 is less than a preset distance threshold (for example, 10 centimeters (cm)), when the mobile phone 210 sends the NFC detection signal, the smart watch 220 that passively receives the NFC detection signal may sense the NFC detection signal. In the rf electromagnetic field of the cell phone 210, both the cell phone 210 and the smart watch 220 may feel the corresponding feedback. The feedback signal of the NFC probe signal is a signal level change detected by the mobile phone 210.

After the mobile phone 210 sends the NFC probe signal, the feedback signal of the NFC probe signal may be detected. If a feedback signal of the NFC probe signal is detected within a second preset time period from the sending of the NFC probe signal, step 1003 is executed. And if the feedback signal of the NFC probe signal is not detected within the second preset time period from the sending of the NFC probe signal, re-executing the steps 1001 to 1002.

For example, in a bright screen scene, the second preset time period may be equal to or less than the first preset period. In the screen-off scene, the second preset duration may be equal to or less than a second preset period.

In some embodiments, after step 1002, if a feedback signal of the NFC probe signal is detected within a second preset time period from the sending of the NFC probe signal, the mobile phone 210 may send a first prompt message. In response to the first operation of the first prompt message by the user, the mobile phone 210 may execute step 1003. In response to the second operation of the user, the mobile phone 210 may not perform steps 1001 to 1003 within the fourth preset time period.

In other embodiments, if the mobile phone 210 does not receive the first operation or the second operation within the fifth preset time period since the first prompt message is sent, the mobile phone 210 may not perform steps 1001 to 1003 within the fourth preset time period.

Step 1003, the mobile phone 210 starts a reverse wireless charging function to wirelessly charge the smart watch 220.

The mobile phone 210 may start a reverse wireless charging function, and wirelessly charge the smart watch 220 according to a wireless charging protocol. It should be noted that, in step 1003, reference may be made to the detailed description of step 404, which is not described herein again in this embodiment of the present application.

The embodiment of the application provides a wireless charging method for a mobile terminal, wherein a mobile phone 210 can periodically transmit an NFC detection signal; if the feedback signal of the NFC probe signal is detected within the second preset duration, the mobile phone 210 may automatically wirelessly charge the smart watch 220 according to the wireless charging protocol. In this way, automatic wireless charging between mobile terminals can be achieved.

In the process that the mobile phone 210 wirelessly charges the smart watch 220 according to the wireless charging protocol, the mobile phone 210 may interact with the smart watch 220 to complete foreign object detection, coil position confirmation, charging parameter negotiation, and the like. In the embodiment of the present application, the foreign object detection, the coil position confirmation, and the charging parameter negotiation may be referred to as secondary confirmation of wireless charging; the feedback signal of whether the NFC probe signal is received is referred to as a primary determination of wireless charging. In the embodiment of the application, automatic wireless charging between the mobile terminals can be realized through the double judgment of the primary judgment and the secondary confirmation.

In the first case of the third scenario, the NFC antenna of the cell phone 210 is located at the same location as the wireless charging coil of the cell phone 210. In this case, after step 1002, if a feedback signal of the NFC probe signal is detected within a second preset time period from the beginning of the sending of the NFC probe signal by the mobile phone 210, step 1003 may be directly executed to wirelessly charge the smart watch 220 according to the wireless charging protocol.

In the second case of the third scenario, the NFC antenna of the cell phone 210 is not co-located with the wireless charging coil of the cell phone 210. In this case, after step 1002, if a feedback signal of the NFC probe signal is detected within a second preset time period from the time when the mobile phone 210 sends the NFC probe signal, the mobile phone 210 may send a prompt 1101 (e.g., a third prompt) shown in fig. 11. This third prompt is used to prompt the user to place the smart watch 220 at the location of the wireless charging coil of the cell phone 210. In this way, the mobile phone 210 may perform step 1003 to wirelessly charge the smart watch 220 according to the wireless charging protocol.

Fig. 11 shows only one example of the third guidance information. In the embodiment of the present application, specific ways of sending the third prompt message by the mobile phone 210 include, but are not limited to, the ways shown in fig. 11. Other ways for the mobile phone 210 to send the third prompt message are not described herein in detail in this embodiment of the present application.

In this embodiment, in order to enable the mobile phone 210 to wirelessly charge the smart watch 220, the mobile phone 210 periodically sends a ping message, i.e., a Digital ping message, when performing step 404, step 904, and step 1003.

For example, as shown in fig. 12, it is a waveform diagram of a ping message sent by the handset 210 measured by experiment. As can be seen from fig. 12: the ping message is a periodic pulse signal. The handset 210 sends a ping message every 10s, i.e. the transmission period T of the ping message is 10 s. The signal amplitude I (e.g., average current) of the ping message is about 30 milliamps (mA). 5 ping messages are sent at a time. These 5 ping messages take 90ms, and the period of these 5 ping messages is 1.5 hertz (Hz).

The energy consumed by the mobile phone 210 to transmit the ping message according to the parameters shown in fig. 12 is converted into the power consumption of the battery of the mobile phone 210, which specifically includes: the total consumed power of 312mA is accumulated in the whole day (24 hours). And, by experimental measurements: by using the method of the embodiment of the application, it takes 1s for the mobile phone 210 to execute step 806 to wirelessly charge the smart watch 220 after the mobile phone 210 determines to wirelessly charge the smart watch 220 through the wireless signal.

From the above experimental parameters: the power consumption for wireless charging detection by the method of the embodiment of the application is low, and the power consumption for wireless charging detection can be reduced. Moreover, the time consumption for wireless charging detection is short, and the efficiency of automatic wireless charging between mobile terminals can be improved.

Other embodiments of the present application provide a mobile terminal (e.g., the mobile terminal 300 shown in fig. 3), which may include: the wireless charging coil, the wireless communication module, the memory and the one or more processors. The wireless charging coil, the wireless communication module, the memory and the processor are coupled. The memory is for storing computer program code comprising computer instructions. When the processor executes the computer instructions, the mobile terminal may perform various functions or steps performed by the handset 210 in the above-described method embodiments. The structure of the mobile terminal may refer to the structure of the mobile terminal 300 shown in fig. 3.

An embodiment of the present application further provides a chip system, as shown in fig. 13, where the chip system includes at least one processor 1301 and at least one interface circuit 1302. The processor 1301 and the interface circuit 1302 may be interconnected by wires. For example, the interface circuit 1302 may be used to receive signals from other devices, such as a memory of a mobile terminal. Also for example, the interface circuit 1302 may be used to transmit signals to other devices, such as the processor 1301. Illustratively, the interface circuit 1302 may read instructions stored in a memory and send the instructions to the processor 1301. The instructions, when executed by the processor 1301, may cause a mobile terminal (such as the mobile terminal 300 shown in fig. 3) to perform the various steps in the embodiments described above. Of course, the chip system may further include other discrete devices, which is not specifically limited in this embodiment of the present application.

An embodiment of the present application further provides a computer-readable storage medium, where the computer-readable storage medium includes computer instructions, and when the computer instructions are executed on the mobile terminal (e.g., the mobile terminal 300 shown in fig. 3), the mobile terminal is caused to perform various functions or steps performed by the mobile phone in the foregoing method embodiment.

The embodiment of the present application further provides a computer program product, which when running on a computer, causes the computer to execute each function or step executed by the mobile phone in the above method embodiments.

Through the description of the above embodiments, it is clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the device may be divided into different functional modules to complete all or part of the above described functions.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the modules or units is only one logical functional division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another device, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may be one physical unit or a plurality of physical units, that is, may be located in one place, or may be distributed in a plurality of different places. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application may be essentially or partially contributed to by the prior art, or all or part of the technical solutions may be embodied in the form of a software product, where the software product is stored in a storage medium and includes several instructions to enable a device (which may be a single chip, a chip, or the like) or a processor (processor) to execute all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only an embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A wireless charging method of a mobile terminal is characterized in that the method is applied to a first mobile terminal, and the first mobile terminal has a function of receiving wireless charging input of other equipment and a reverse wireless charging function through a wireless charging coil; the reverse wireless charging function is a function that the first mobile terminal wirelessly charges other mobile terminals through the wireless charging coil, and the method comprises the following steps:

the first mobile terminal detecting a wireless signal from a second mobile terminal, the wireless signal being a short-range wireless signal;

and if the wireless signal meets a preset condition, the first mobile terminal automatically starts the reverse wireless charging function to wirelessly charge the second mobile terminal.

2. The method of claim 1, wherein the wireless signal is a bluetooth paging signal;

the first mobile terminal detecting a wireless signal from the second mobile terminal, comprising:

the first mobile terminal scans the Bluetooth paging signal;

the first mobile terminal receives a Bluetooth paging signal from the second mobile terminal, and detects a Received Signal Strength Indicator (RSSI) of the Bluetooth paging signal from the second mobile terminal;

wherein, the wireless signal satisfying the preset condition comprises: and the RSSI of the Bluetooth paging signal received by the first mobile terminal from the second mobile terminal is greater than a preset intensity threshold value.

3. The method of claim 1, wherein the wireless signal is a bluetooth signal from the second mobile terminal after the first mobile terminal establishes a bluetooth connection with the second mobile terminal;

the first mobile terminal receives a Bluetooth signal from the second mobile terminal and detects the RSSI of the Bluetooth signal from the second mobile terminal;

wherein, the wireless signal satisfying the preset condition comprises: and the RSSI of the Bluetooth signal received by the first mobile terminal from the second mobile terminal is greater than a preset strength threshold value.

4. The method according to claim 2 or 3, wherein the wireless signal satisfying the preset condition comprises: and the RSSI of the wireless signal received by the first mobile terminal from the second mobile terminal is greater than the preset intensity threshold value within a first preset time.

5. The method according to any one of claims 2-4, wherein the wireless signal satisfying a preset condition comprises: the RSSI of the N wireless signals received by the first mobile terminal from the second mobile terminal is greater than the preset intensity threshold within a first preset time length; wherein, N is a preset positive integer.

6. The method of claim 1, wherein the wireless signal is a feedback signal of a proximity wireless communication technology (NFC) probe signal;

the first mobile terminal periodically sends the NFC detection signal and detects a feedback signal of the NFC detection signal;

wherein, the wireless signal satisfying the preset condition comprises: and the first mobile terminal receives the feedback signal within a second preset time period from the sending of the NFC detection signal.

7. The method of claim 6,

the first mobile terminal periodically sends a Near Field Communication (NFC) detection signal, and the method comprises the following steps:

the first mobile terminal periodically sends an NFC detection signal according to a first preset period in a bright screen scene;

the first mobile terminal periodically sends an NFC detection signal according to a second preset period in a screen-off scene;

wherein the first preset period is less than the second preset period.

8. The method of claim 6 or 7, wherein the NFC antenna of the first mobile terminal and the wireless charging coil are disposed at different locations of the first mobile terminal;

before the first mobile terminal automatically starts the reverse wireless charging function and wirelessly charges the second mobile terminal, the method further includes:

the first mobile terminal sends prompt information, and the prompt information is used for prompting a user to place the second mobile terminal at the position of the wireless charging coil.

9. The method according to any of claims 1-8, wherein the first mobile terminal automatically turns on the reverse wireless charging function to wirelessly charge the second mobile terminal, comprising:

if the first mobile terminal determines that no metal object is placed on the wireless charging coil, the first mobile terminal automatically starts the reverse wireless charging function to wirelessly charge the second mobile terminal.

10. The method according to any of claims 1-9, wherein the first mobile terminal automatically turns on the reverse wireless charging function to wirelessly charge the second mobile terminal, comprising:

the first mobile terminal transmits an Internet packet detector ping message through the wireless charging coil;

if the first mobile terminal receives a signal strength message from the second mobile terminal through the wireless charging coil within a third preset time length, the first mobile terminal enters an identification and configuration stage to wait for receiving a configuration message from the second mobile terminal; the configuration message is used for indicating the maximum power required by the second mobile terminal for wireless charging;

the first mobile terminal receives the configuration message from the second mobile terminal through the wireless charging coil, configures the output parameters of the wireless charging coil according to the configuration message, and wirelessly charges the second mobile terminal through the wireless charging coil.

11. The method of claim 10, wherein after the first mobile terminal enters an identification and configuration phase, the method further comprises:

the first mobile terminal receives an Identification (ID) message from the second mobile terminal through the wireless charging coil; the ID message comprises a manufacturer identification VID and a product serial number of the second mobile terminal;

the first mobile terminal judges whether the second mobile terminal is a pre-configured mobile terminal according to the identification ID message;

wherein, for the wireless charging of second mobile terminal includes:

if the second mobile terminal is the preconfigured mobile terminal, the first mobile terminal wirelessly charges the second mobile terminal through the wireless charging coil.

12. A mobile terminal, wherein the mobile terminal is a first mobile terminal comprising a wireless charging coil, a wireless communication module, a memory, and one or more processors; the wireless charging coil, the wireless communication module, the memory and the processor are coupled; the wireless charging coil is used for receiving wireless charging input of other equipment and charging the first mobile terminal; the wireless charging coil is also used for transmitting a wireless charging signal to other mobile terminals to realize the reverse wireless charging function of the first mobile terminal;

wherein the memory is to store computer program code comprising computer instructions; the computer instructions, when executed by the processor, cause the first mobile terminal to:

detecting a wireless signal from a second mobile terminal, the wireless signal being a short-range wireless signal;

and if the wireless signal meets a preset condition, automatically starting the reverse wireless charging function to wirelessly charge the second mobile terminal.

13. The mobile terminal of claim 12, wherein the wireless communication module is a bluetooth module, and the wireless signal is a bluetooth paging signal;

the computer instructions, when executed by the processor, cause the first mobile terminal to further perform the steps of:

scanning the bluetooth paging signal;

receiving a Bluetooth paging signal from the second mobile terminal, and detecting a Received Signal Strength Indication (RSSI) of the Bluetooth paging signal from the second mobile terminal;

14. The mobile terminal of claim 12, wherein the wireless communication module is a bluetooth module;

establishing Bluetooth connection with the second mobile terminal; the wireless signal is a Bluetooth signal received from the second mobile terminal after the Bluetooth connection is established with the second mobile terminal;

receiving a Bluetooth signal from the second mobile terminal, and detecting RSSI of the Bluetooth signal from the second mobile terminal;

15. The mobile terminal according to claim 13 or 14, wherein the wireless signal satisfying a preset condition comprises: and the RSSI of the wireless signal received by the first mobile terminal from the second mobile terminal is greater than the preset intensity threshold value within a first preset time.

16. The mobile terminal according to any of claims 13-15, wherein the wireless signal satisfying a preset condition comprises: the RSSI of the N wireless signals received by the first mobile terminal from the second mobile terminal is greater than the preset intensity threshold within a first preset time length; wherein, N is a preset positive integer.

17. The mobile terminal of claim 12, wherein the wireless communication module is a proximity wireless communication technology (NFC) antenna, and the wireless signal is a feedback signal of an NFC probe signal;

periodically sending the NFC detection signal, and detecting a feedback signal of the NFC detection signal;

18. The mobile terminal of claim 17,

in a bright screen scene, periodically sending an NFC detection signal according to a first preset period;

in a screen-off scene, periodically sending an NFC detection signal according to a second preset period;

wherein the first preset period is less than the second preset period.

19. The mobile terminal of claim 17 or 18, wherein the NFC antenna is disposed at a different location than the wireless charging coil in the first mobile terminal;

and sending prompt information, wherein the prompt information is used for prompting a user to place the second mobile terminal at the position of the wireless charging coil.

20. The mobile terminal according to any of claims 12-19,

and if no metal object is placed on the wireless charging coil, automatically starting the reverse wireless charging function to wirelessly charge the second mobile terminal.

21. The mobile terminal according to any of claims 12-20,

transmitting an internet packet detector ping message through the wireless charging coil;

if the signal strength message from the second mobile terminal is received through the wireless charging coil within a third preset time length, entering an identification and configuration stage to wait for receiving a configuration message from the second mobile terminal; the configuration message is used for indicating the maximum power required by the second mobile terminal for wireless charging;

receiving the configuration message from the second mobile terminal through the wireless charging coil, configuring the output parameters of the wireless charging coil according to the configuration message, and wirelessly charging the second mobile terminal through the wireless charging coil.

22. The mobile terminal of claim 21,

receiving, by the wireless charging coil, an Identification (ID) message from the second mobile terminal during the identification and configuration phase; the ID message comprises a manufacturer identification VID and a product serial number of the second mobile terminal;

judging whether the second mobile terminal is a pre-configured mobile terminal or not according to the identification ID message;

and if the second mobile terminal is the preconfigured mobile terminal, wirelessly charging the second mobile terminal through the wireless charging coil.

23. The chip system is applied to a mobile terminal comprising a wireless charging coil, a wireless communication module and a memory; the chip system includes one or more interface circuits and one or more processors; the interface circuit and the processor are interconnected through a line; the interface circuit to receive signals from the memory and to send the signals to the processor, the signals including computer instructions stored in the memory; the mobile terminal, when executing the computer instructions, performs the method of any of claims 1-11.

24. A computer readable storage medium comprising computer instructions which, when run on a mobile terminal, cause the mobile terminal to perform the method of any one of claims 1-11.

25. A computer program product, characterized in that, when the computer program product is run on a computer, it causes the computer to perform the method according to any of claims 1-11.