WO2021129128A1 - 一种移动终端的无线充电方法及移动终端 - Google Patents

一种移动终端的无线充电方法及移动终端 Download PDF

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Publication number
WO2021129128A1
WO2021129128A1 PCT/CN2020/124775 CN2020124775W WO2021129128A1 WO 2021129128 A1 WO2021129128 A1 WO 2021129128A1 CN 2020124775 W CN2020124775 W CN 2020124775W WO 2021129128 A1 WO2021129128 A1 WO 2021129128A1
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WIPO (PCT)
Prior art keywords
mobile terminal
wireless charging
signal
wireless
preset
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PCT/CN2020/124775
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English (en)
French (fr)
Inventor
谭细金
苏丹
孙士友
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华为技术有限公司
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Publication of WO2021129128A1 publication Critical patent/WO2021129128A1/zh

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/90—Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries

Definitions

  • the embodiments of the present application relate to the field of communication technology and wireless charging technology, and in particular, to a wireless charging method of a mobile terminal and a mobile terminal.
  • the battery is an indispensable device on the mobile terminal and a tool that can provide power and energy storage for the mobile terminal.
  • the battery of the mobile terminal can store power through charging, and then power the mobile terminal through discharging.
  • mobile terminals can charge batteries in two ways, wired charging and wireless charging.
  • a mobile terminal such as a mobile phone
  • a mobile terminal wirelessly charges another mobile terminal
  • the user needs to manually activate the wireless charging function of the mobile terminal before the mobile terminal can wirelessly charge other mobile terminals.
  • the mobile phone 1 can only wirelessly charge the mobile phone 2 after the mobile phone 1 activates the wireless charging function in response to the user's operation.
  • the current wireless charging scheme cannot realize automatic wireless charging of one mobile terminal for another mobile terminal.
  • the embodiments of the present application provide a wireless charging method for a mobile terminal and a mobile terminal, which can realize automatic wireless charging between mobile terminals.
  • this application provides a wireless charging method for a mobile terminal, which can be applied to a first mobile terminal.
  • the first mobile terminal not only has the function of receiving wireless charging input from other devices through the wireless charging coil, but also has the function of reverse wireless charging.
  • the reverse wireless charging function is a function for the first mobile terminal to wirelessly charge other mobile terminals through the wireless charging coil.
  • the above method may include: the first mobile terminal detects a wireless signal (such as a short-range wireless signal) from the second mobile terminal; the first mobile terminal may determine whether the wireless signal satisfies a preset condition. If the wireless signal meets the preset condition, the first mobile terminal can automatically turn on the above reverse wireless charging function to wirelessly charge the second mobile terminal.
  • a wireless signal such as a short-range wireless signal
  • the foregoing wireless signal satisfies the preset condition may include: the signal strength of the wireless signal is greater than a preset strength threshold; or, the time when the first mobile terminal receives the wireless signal is within a preset time range. From the perspective of the positional 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 less than the preset distance threshold, the first mobile terminal may receive the signal from the second mobile terminal. Only the wireless signal of the terminal can satisfy the preset condition.
  • the second mobile terminal when the user wants to use the first mobile terminal to wirelessly charge the second mobile terminal, the second mobile terminal will be placed around the first mobile terminal (such as 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. It can be seen that if the wireless signal meets the preset condition, it means that the user has a need to use the first mobile terminal to wirelessly charge the second mobile terminal. In this case, the first mobile terminal can automatically turn on the above reverse wireless charging function to wirelessly charge the second mobile terminal. In summary, through the method of the present application, automatic wireless charging between mobile terminals can be realized.
  • the above-mentioned wireless signal is a Bluetooth paging signal.
  • the first mobile terminal detecting the wireless signal from the second mobile terminal may include: the first mobile terminal scans the Bluetooth paging signal; after receiving the Bluetooth paging signal from the second mobile terminal, detecting the wireless signal from the second mobile terminal Received signal strength indication (RSSI) of the Bluetooth paging signal.
  • RSSI Received signal strength indication
  • the above-mentioned wireless signal satisfies the preset condition, which may specifically include: the RSSI of the Bluetooth paging signal received from the second mobile terminal by the first mobile terminal is greater than the preset intensity threshold.
  • the RSSI of the Bluetooth paging signal is used to characterize the signal strength of the Bluetooth paging signal received by the first mobile terminal.
  • the RSSI of the Bluetooth paging signal is inversely proportional to the distance between the mobile terminal. The farther the distance, the smaller the RSSI of the Bluetooth paging signal; 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 intensity threshold, it means that the distance between the first mobile terminal and the second mobile terminal is relatively close, and the user may want to use the first mobile terminal.
  • the mobile terminal is required for wireless charging of the second mobile terminal. In this case, the first mobile terminal can automatically turn on the above reverse wireless charging function to wirelessly charge the second mobile terminal.
  • the above-mentioned 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 detecting 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.
  • the above-mentioned wireless signal satisfies the preset condition, which may specifically include: the RSSI of the Bluetooth signal received from the second mobile terminal by the first mobile terminal is greater than the preset intensity threshold.
  • the RSSI of the Bluetooth signal received by the first mobile terminal from the second mobile terminal is greater than the preset intensity threshold, it means that the distance between the first mobile terminal and the second mobile terminal is relatively close, and the user There may be a need to use the first mobile terminal to wirelessly charge the second mobile terminal.
  • the first mobile terminal can automatically turn on the above reverse wireless charging function to wirelessly charge the second mobile terminal.
  • the above-mentioned second mobile terminal may send wireless signals (such as broadcasting a Bluetooth paging signal) multiple times. Therefore, the first mobile terminal may receive multiple Bluetooth signals from the second mobile terminal within a period of time. If the first mobile terminal receives the RSSI of the Bluetooth signal from the second mobile terminal within a period of time (such as the first preset duration) and the RSSI is greater than the preset intensity threshold, the user wants to use the first mobile terminal as the second mobile terminal The possibility of wireless charging is higher.
  • the above-mentioned wireless signal satisfies the preset condition, which may include: the RSSI of the wireless signal received from the second mobile terminal within the first preset time period of the first mobile terminal is greater than the preset intensity threshold. In this way, the misjudgment of whether the second mobile terminal is wirelessly charged by the first mobile terminal can be reduced, and the wireless charging efficiency can be improved.
  • the above-mentioned wireless signal satisfies the preset conditions including: The RSSI of the N wireless signals received by the terminal from the second mobile terminal within the first preset time period are all greater than the preset intensity threshold; where N is a preset positive integer.
  • the reason for the first mobile terminal's misjudgment of whether the second mobile terminal is wirelessly charged may be: the distance between the first mobile terminal and the second mobile terminal is relatively short, so that the first mobile terminal is in the first preset
  • the RSSI of 1 or 2 Bluetooth paging signals received from the second mobile terminal within a time period (for example, 2s) is greater than a preset intensity threshold. Then, the distance between the first mobile terminal and the second mobile terminal becomes larger, so that the first mobile terminal cannot receive the Bluetooth paging signal from the second mobile terminal.
  • the first mobile terminal when the RSSI of the N wireless signals received from the second mobile terminal is greater than the preset intensity threshold within the first preset period of time, the first mobile terminal will The reverse wireless charging function can be automatically turned on. In this way, the misjudgment of whether the second mobile terminal is wirelessly charged by the first mobile terminal can be reduced, and the wireless charging efficiency can be improved.
  • the above-mentioned wireless signal is a feedback signal of a near field communication technology (near field communication, NFC) detection signal.
  • the detection of the wireless signal from the second mobile terminal by the first mobile terminal may include: the first mobile terminal periodically sends an NFC detection signal and detects a feedback signal of the NFC detection signal.
  • the wireless signal satisfies the preset condition includes: the first mobile terminal receives the feedback signal within the second preset time period from the sending of the NFC detection signal.
  • the first mobile terminal receives the feedback signal within the second preset period of time since sending the NFC detection signal, it means that the second mobile terminal is relatively close to the first mobile terminal, and the user is using the first mobile terminal as the first mobile terminal. 2.
  • the above-mentioned first mobile terminal periodically sending a short-range wireless communication technology NFC detection signal may include: the first mobile terminal in a bright screen scenario, according to the first preset The NFC detection signal is periodically sent periodically; the first mobile terminal periodically sends the NFC detection signal according to the second preset period when the screen is off. Wherein, the first preset period is less than the second preset period.
  • the NFC antenna of the first mobile terminal and the wireless charging coil of the first mobile terminal are arranged at different positions of the first mobile terminal.
  • the method of the present application further includes: the first mobile terminal sends out a prompt message.
  • the prompt information is used to prompt the user to place the second mobile terminal at the position where the wireless charging coil of the first mobile terminal is located.
  • the NFC antenna and the wireless charging coil are set at different positions of the first mobile terminal, if the second mobile terminal is not placed at the position where the wireless charging coil of the first mobile terminal is located, the first mobile terminal cannot be The second mobile terminal is wirelessly charged.
  • the first mobile terminal sends out the above-mentioned prompt information, which can prompt the user to place the second mobile terminal at the position of the wireless charging coil of the first mobile terminal, so that the efficiency of wireless charging can be improved.
  • the above-mentioned first mobile terminal automatically turns on the reverse wireless charging function to wirelessly charge the second mobile terminal, which may include: if the first mobile terminal determines that there is no The metal object is placed on the wireless charging coil of the first mobile terminal, and the first mobile terminal automatically turns on the reverse wireless charging function to wirelessly charge the second mobile terminal.
  • the alternating electromagnetic field generated by the wireless charging coil of the first mobile terminal causes the metal foreign objects to generate heat. If the metal foreign body generates a lot of heat, it may cause the combustible materials around the metal foreign body to burn, posing a safety hazard. Through this design method, the above-mentioned safety hazards can be eliminated.
  • the above-mentioned first mobile terminal automatically turns on the reverse wireless charging function to wirelessly charge the second mobile terminal, which may include: the first mobile terminal transmits an Internet packet through the wireless charging coil Probe ping message; if the first mobile terminal receives the signal strength message from the second mobile terminal through the wireless charging coil within the third preset time period, the first mobile terminal enters the identification and configuration phase to wait for the reception from the second mobile terminal
  • the configuration message of the terminal is used to indicate 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, and configures the first mobile terminal according to the configuration message
  • the output parameters of the wireless charging coil are used to wirelessly charge the second mobile terminal through the wireless charging coil.
  • the method of the present application further includes: the first mobile terminal uses wireless charging of the first mobile terminal
  • the coil receives an identification (ID) message from the second mobile terminal.
  • the ID message includes the vendor ID (VID) of the second mobile terminal and the product serial number; the first mobile terminal judges whether the second mobile terminal is a pre-configured mobile terminal according to the identification ID message; if the second mobile terminal It is a pre-configured mobile terminal.
  • the first mobile terminal wirelessly charges the second mobile terminal through a wireless charging coil.
  • 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.
  • an embodiment of the present application provides a mobile terminal, and the mobile terminal is the above-mentioned 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, wireless communication module, memory and processor are coupled.
  • the above-mentioned wireless charging coil is used to receive wireless charging input from other devices to charge the first mobile terminal.
  • the above-mentioned wireless charging coil is also used to transmit wireless charging signals to other mobile terminals to realize the reverse wireless charging function of the first mobile terminal.
  • the above-mentioned memory is used to store computer program codes.
  • the computer program code includes computer instructions. When the foregoing processor executes the computer instruction, the mobile terminal (ie, the first mobile terminal) executes the method described in the first aspect and any one of its possible design manners.
  • embodiments of the present application provide a chip system, which is applied to a mobile terminal including a wireless charging coil, a wireless communication module, and a memory, such as the mobile terminal described in the second aspect.
  • the chip system includes one or more interface circuits and one or more processors.
  • the interface circuit and the processor are interconnected by wires.
  • the interface circuit is used to receive signals from the memory of the mobile terminal and send the received signals to the processor.
  • the signal may include computer instructions stored in the memory.
  • an embodiment of the present application provides a computer-readable storage medium, which includes computer instructions that, when the computer instructions are executed on a mobile terminal, cause the mobile terminal to perform operations as in the first aspect and its Any one of the possible design methods.
  • embodiments of the present application provide a computer program product, which when the computer program product runs on a computer, causes the computer to execute the method described in the first aspect and any of its possible design methods.
  • the electronic device described in the second aspect and any one of its possible design methods provided above the chip system described in the third aspect, the computer-readable storage medium described in the fourth aspect, and the electronic device described in the fifth aspect
  • the beneficial effects that can be achieved by the computer program product described above please refer to the beneficial effects in the first aspect and any of its possible design methods, which will not be repeated here.
  • FIG. 1 is a schematic diagram of the architecture of a wireless charging system provided by an embodiment of the application
  • 2A is a schematic diagram of a wireless charging terminal interface provided in the prior art
  • 2B is a schematic diagram of a wireless charging principle provided by an embodiment of the application.
  • FIG. 3 is a schematic diagram of the hardware structure of a mobile phone provided by an embodiment of the application.
  • 4A is a flowchart of a wireless charging method for a mobile terminal provided by an embodiment of the application.
  • 4B is a flowchart of a wireless charging method for a mobile terminal provided by an embodiment of the application.
  • FIG. 5 is a schematic diagram of Bluetooth signal transmission provided by an embodiment of the application.
  • FIG. 6 is a flowchart of another wireless charging method for a mobile terminal according to an embodiment of the application.
  • FIG. 7A is a flowchart of another wireless charging method for a mobile terminal according to an embodiment of the application.
  • FIG. 7B is a schematic diagram of a wireless charging terminal interface provided by an embodiment of the application.
  • FIG. 8 is a flowchart of another wireless charging method for a mobile terminal according to an embodiment of the application.
  • FIG. 9A is a flowchart of another wireless charging method for a mobile terminal according to an embodiment of the application.
  • FIG. 9B is a flowchart of another wireless charging method for a mobile terminal according to an embodiment of the application.
  • FIG. 10 is a flowchart of another wireless charging method for a mobile terminal according to an embodiment of the application.
  • FIG. 11 is a schematic diagram of another wireless charging terminal interface provided by an embodiment of the application.
  • FIG. 12 is a schematic diagram of a waveform of a ping signal provided by an embodiment of this application.
  • FIG. 13 is a schematic structural diagram of a chip system provided by an embodiment of the application.
  • the embodiment of the present application provides a wireless charging method for a mobile terminal, which can be applied in a process of wireless charging for another mobile terminal by one mobile terminal.
  • FIG. 1 shows a schematic structural diagram of a wireless charging system provided by an embodiment of the present application.
  • the wireless charging system 100 may include a first mobile terminal 110 and a second mobile terminal 120. Among them, the first mobile terminal 110 can automatically wirelessly charge the second mobile terminal 120.
  • the wireless charging coil of the first mobile terminal 110 is coupled with the wireless charging coil of the second mobile terminal 120.
  • the first mobile terminal 110 can transmit a wireless charging signal to the second mobile terminal 120 through the wireless charging coil, which is the first 2.
  • the mobile terminal 120 is wirelessly charged.
  • the function of wirelessly charging the second mobile terminal 120 by the first mobile terminal 110 through the wireless charging coil is referred to as the "reverse wireless charging function".
  • the aforementioned first mobile terminal 110 may also receive wireless charging input from other devices through a wireless charging coil.
  • the other device may be a wireless charging base of the first mobile terminal 110; or, the other device may be another mobile terminal that supports wireless charging (such as a third mobile terminal).
  • the aforementioned first mobile terminal 110 may also support wired charging.
  • the wired charging described in the embodiments of the present application means that the charging interface of the first mobile terminal 100 can be connected to a wired charger (also referred to as a power adapter) to receive the charging input of the wired charger.
  • a wired charger also referred to as a power adapter
  • the aforementioned charging interface may be a universal serial bus (USB) interface.
  • the method of the embodiment of the present application is applied to a process in which the first mobile terminal 110 wirelessly charges the second mobile terminal 120.
  • the first mobile terminal 110 in the embodiment of the present application may be a mobile phone, a tablet computer, a desktop type, a laptop, a handheld computer, a notebook computer, an ultra-mobile personal computer (UMPC), or a netbook.
  • mobile terminals that can wirelessly charge other mobile terminals such as cellular phones, personal digital assistants (PDA), augmented reality (AR) ⁇ virtual reality (VR) devices, and vehicle-mounted devices.
  • PDA personal digital assistants
  • AR augmented reality
  • VR virtual reality
  • vehicle-mounted devices vehicle-mounted devices.
  • the application embodiment does not impose special restrictions on the specific form of the first mobile terminal 110.
  • the second mobile terminal 120 in the embodiment of the application may be a mobile phone, a wearable device (such as a smart watch, etc.), a true wireless stereo (TWS) headset, a tablet computer, a laptop, a handheld computer, a notebook computer, Ultra-mobile personal computer (UMPC), netbook, cell phone, personal digital assistant (PDA), augmented reality (AR) ⁇ virtual reality (VR) equipment, etc.
  • TWS true wireless stereo
  • UMPC Ultra-mobile personal computer
  • netbook cell phone
  • PDA personal digital assistant
  • AR augmented reality
  • VR virtual reality
  • the specific form of the second mobile terminal 120 is not particularly limited in the embodiment of the present application.
  • FIG. 2B shows a schematic diagram of a charging circuit structure of a mobile phone 210 and a smart watch 220 provided by an embodiment of the present application.
  • the mobile phone 210 includes a processor 211, a battery 212, a charging control module 213, a wireless charging control module 214, a wireless charging coil 215, and a charging interface 216.
  • the smart watch 220 includes a processor 221, a battery 222, a charging control module 223, a wireless charging control module 224, a wireless charging coil 225, and a charging interface 226.
  • the mobile phone 210 is used as the transmitter of the wireless charging signal
  • the smart watch 220 is used as the receiver of the wireless charging signal
  • the mobile phone 210 is the smart watch 220 for wireless charging. Therefore, as shown in FIG. 2B, the wireless charging coil 215 of the mobile phone 210 may be referred to as a transmitting (Tx) coil, and the wireless charging coil 225 of the smart watch 220 may be referred to as a receiving (Rx) coil.
  • Tx transmitting
  • Rx receiving
  • the reverse wireless charging function of the mobile phone 210 is turned off by default.
  • the mobile phone 210 can receive a user's click operation on the "battery" option 201 in the setting interface shown in FIG. 2A (a), and in response to the click operation, the mobile phone 210 can display the battery interface shown in FIG. 2A (b) 202.
  • the battery interface 202 includes a “wireless reverse charging” switch 203. In response to the user's turning on the "wireless reverse charging” switch 203, the mobile phone 210 can activate the reverse wireless charging function.
  • the processor 221 of the mobile phone 210 can control the charging control module 213 to receive the input of the battery 212 and input the direct current signal to the wireless charging control module 214.
  • the wireless charging control module 214 can convert the direct current signal into an alternating electric signal, and then input the alternating electric signal to the wireless charging coil 215.
  • the wireless charging coil 215 can generate an alternating electromagnetic field in response to the alternating electric signal.
  • the wireless charging coil 225 of the smart watch 220 is coupled with the wireless charging coil 215 of the mobile phone 210. After the wireless charging function of the smart watch 220 is turned on, the processor 221 of the smart watch 220 can control the wireless charging coil (that is, the Rx coil) 225 to start working.
  • the wireless charging coil (ie, Rx coil) 225 induces the alternating electromagnetic field emitted by the wireless charging coil (ie, Tx coil) 215 to generate an alternating electrical signal, and input the alternating electrical signal to the wireless charging control module 224.
  • the wireless charging control module 224 can rectify the alternating electric signal into a direct current signal, and input the direct current signal to the charging control module 223.
  • the charging control module 223 can charge the battery 222 according to the direct current signal.
  • the wireless charging control module 214 and the wireless charging control module 224 may include a matching circuit.
  • the matching circuit may include a combination of capacitances.
  • the matching circuit in the wireless charging control module 214 is used to form an 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 receiving efficiency of the wireless charging coil 225.
  • the aforementioned mobile phone 210 can also receive wireless charging input from other devices through the wireless charging coil 215, that is, the mobile phone 210 supports forward wireless charging.
  • the principle of forward wireless charging of the mobile phone 210 reference may be made to the principle of wireless charging of the smart watch 220 when the mobile phone 210 is wirelessly charging the smart watch 220.
  • the mobile phone 210 may also support wired charging.
  • the processor 211 of the mobile phone 210 is connected to the charging interface 216 for detecting whether there is a charging input (ie, a wired charging input) on the charging interface 216.
  • the processor 211 can detect that there is a charging input on the charging interface 216. At this time, the processor 211 may communicate with the charging control module 213 to configure the parameters of the charging control module 213, so that the charging control module 213 is configured to charge the battery 212 according to the parameters. Specifically, the charging control module 213 is connected to the charging interface 216 for receiving the charging input from the power adapter 217 through the charging interface 216 to charge the battery 212.
  • the charging interface 216 may be a USB interface.
  • the smart watch 220 may also support wired charging.
  • the processor 221 of the smart watch 220 is connected to the charging interface 226.
  • the charging interface 226 is used to connect the power adapter 227 to charge the smart watch 220 by wire.
  • the principle of each device in the smart watch 220 interacting to charge the battery 222 can refer to the wired charging principle of the mobile phone 210, which is not repeated in the embodiment of the present application.
  • FIG. 2B only shows a schematic diagram of the charging circuit structure of a mobile phone 210 and a 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.
  • the functions of the charging control module 213 and the wireless charging control module 214 shown in FIG. 2B can be integrated into one charging management module.
  • the charging circuit structure of the mobile phone 210 and the smart watch 220 may be different.
  • FIG. 3 is a schematic structural diagram of a mobile terminal (such as a first mobile terminal 110 or a second mobile terminal 120) provided by an embodiment of this application.
  • 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, and a wireless charging coil 342, antenna 1, antenna 2, mobile communication module 350, wireless communication module 360, audio module 370, speaker 370A, receiver 370B, microphone 370C, earphone interface 370D, sensor module 380, buttons 390, motor 391, indicator 392, camera 393, a display screen 394, a subscriber identification module (SIM) card interface 395, and so on.
  • SIM subscriber identification module
  • 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, etc.
  • the mobile terminal 300 shown in FIG. 3 may be the mobile phone 210 shown in FIG. 2B.
  • 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 wireless charging control of the mobile phone 210.
  • the wireless charging coil 342 is the wireless charging coil 215 of the mobile phone 210
  • the USB interface 330 is the charging interface 216 of the mobile phone 210.
  • the mobile terminal 300 shown in FIG. 3 may be the smart watch 220 shown in FIG. 2B.
  • 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 charge management module 340 includes the charge control module 223 of the smart watch 220
  • the wireless charging control module 224 is the wireless charging coil 225 of the smart watch 220
  • the USB interface 330 is the charging interface 226 of the smart watch 220.
  • the structure illustrated in the embodiment of the present invention does not constitute a specific limitation on the mobile terminal 300.
  • the mobile terminal 300 may include more or fewer components than shown, or combine certain components, or split certain components, or arrange different components.
  • the illustrated components can be implemented in hardware, software, or a combination of software and hardware.
  • the processor 310 may include one or more processing units.
  • the processor 310 may include an application processor (AP), a modem processor, a graphics processing unit (GPU), and an image signal processor. (image signal processor, ISP), controller, memory, video codec, digital signal processor (digital signal processor, DSP), baseband processor, and/or neural-network processing unit (NPU) Wait.
  • the different processing units may be independent devices or integrated in one or more processors.
  • the processor 310 (that is, the processor 211 or the processor 221 shown in FIG. 2B) may be an application processor AP.
  • the controller may be the nerve center and command center of the mobile terminal 300.
  • the controller can generate operation control signals according to the instruction operation code and timing signals to complete the control of fetching instructions and executing instructions.
  • a memory may also be provided in the processor 310 to store instructions and data.
  • the memory in the processor 310 is a cache memory.
  • the memory can store instructions or data that the processor 310 has just used or used cyclically. If the processor 310 needs to use the instruction or data again, it can be directly called from the memory. Repeated accesses are avoided, the waiting time of the processor 310 is reduced, and the efficiency of the system is improved.
  • the processor 310 may include one or more interfaces.
  • the interface may include an integrated circuit (inter-integrated circuit, I2C) interface, an integrated circuit built-in audio (inter-integrated circuit sound, I2S) interface, a pulse code modulation (pulse code modulation, PCM) interface, and a universal asynchronous transceiver (universal asynchronous) interface.
  • I2C integrated circuit
  • I2S integrated circuit built-in audio
  • PCM pulse code modulation
  • PCM pulse code modulation
  • UART universal asynchronous transceiver
  • MIPI mobile industry processor interface
  • GPIO general-purpose input/output
  • SIM subscriber identity module
  • Or USB interface etc.
  • the USB interface 330 is an interface that complies with the USB standard specification, and specifically may be a Mini USB interface, a Micro USB interface, a USB Type C interface, and so on.
  • the USB interface 330 can be used to connect a charger (the voltage adapter 217 shown in FIG. 2B) to charge the mobile terminal 300, and can also be used to transfer data between the mobile terminal 300 and peripheral devices. It can also be used to connect earphones and play audio through earphones.
  • the interface can also be used to connect other electronic devices or mobile terminals, such as AR devices.
  • the interface connection relationship between the modules illustrated in the embodiment of the present invention is merely a schematic description, and does not constitute a structural limitation of the mobile terminal 300.
  • the mobile terminal 300 may also adopt different interface connection modes in the foregoing embodiments, or a combination of multiple interface connection modes.
  • the charging management module 340 is used to receive charging input from the charger.
  • the charger can be a wireless charger (such as a wireless charging base of the mobile terminal 300 or other devices that can wirelessly charge the mobile terminal 300), or a wired charger (such as a voltage adapter 217 or a voltage adapter as shown in FIG. 2B). 227).
  • the mobile terminal 300 may support wired charging.
  • the charging management module 340 may receive the charging input of the wired charger through the USB interface 330.
  • the mobile terminal 300 may support forward wireless charging.
  • the charging management module 340 may receive the wireless charging input through the wireless charging coil 342 of the mobile terminal 300.
  • the charging management module 340 and the wireless charging coil 342 are connected through a matching circuit 443.
  • the wireless charging coil 342 may be coupled with the wireless charging coil of the above-mentioned wireless charger, and induce the alternating electromagnetic field emitted by the wireless charging coil of the wireless charger to generate an alternating electric signal.
  • the alternating electric signal generated by the wireless charging coil 342 is transmitted to the charging management module 340 through the matching circuit 443 so as to wirelessly charge the battery 341.
  • the charging management module 340 can also supply power to the mobile terminal 300 while charging the battery 341.
  • the charging management module 340 receives the input of the battery 341, and supplies power to the processor 310, the internal memory 321, the external memory, the display screen 394, the camera 393, and the wireless communication module 360.
  • the charging management module 340 can also be used to monitor the battery capacity of the battery 341, the number of battery cycles, and the battery health status (leakage, impedance) and other parameters.
  • the charging management module 340 may also be provided in the processor 310.
  • the mobile terminal 300 may support wireless charging.
  • the charging management module 340 may also receive an input from the battery 341, and convert the direct current signal input from the battery 341 into an alternating current signal.
  • the alternating current signal is transmitted to the wireless charging coil 342 through the matching circuit 443.
  • the wireless charging coil 342 can generate an alternating electromagnetic field upon receiving the alternating current signal.
  • the wireless charging coils of other mobile terminals induce the alternating electromagnetic field to perform wireless charging. That is, the mobile terminal 300 can also wirelessly charge other mobile terminals.
  • wired charging For a detailed description of the wired charging, forward wireless charging, and wireless charging performed by the mobile terminal 300, reference may be made to the introduction of the principles of wired charging, forward wireless charging, and wireless charging of the mobile phone 210 in the above examples. To repeat.
  • the wireless communication function of the mobile terminal 300 can be implemented by the antenna 1, the antenna 2, the mobile communication module 350, the wireless communication module 360, the modem processor, and the baseband processor.
  • the antenna 1 and the antenna 2 are used to transmit and receive electromagnetic wave signals.
  • Each antenna in the mobile terminal 300 can be used to cover a single or multiple communication frequency bands. Different antennas can also be reused to improve antenna utilization.
  • Antenna 1 can be multiplexed as a diversity antenna of a wireless local area network.
  • the antenna can be used in combination with a tuning switch.
  • the mobile communication module 350 can provide a wireless communication solution including 2G/3G/4G/5G and the like applied to the mobile terminal 300.
  • the wireless communication module 360 can provide applications on the mobile terminal 300 including wireless local area networks (WLAN) (such as wireless fidelity (Wi-Fi) networks), bluetooth (BT), and global navigation satellites. System (global navigation satellite system, GNSS), frequency modulation (FM), NFC, infrared technology (infrared, IR) and other wireless communication solutions.
  • WLAN wireless local area networks
  • BT wireless fidelity
  • BT wireless fidelity
  • BT wireless fidelity
  • BT global navigation satellites.
  • System global navigation satellite system, GNSS
  • FM frequency modulation
  • NFC infrared technology
  • IR infrared technology
  • the antenna 1 of the mobile terminal 300 is coupled with the mobile communication module 350
  • the antenna 2 is coupled with the wireless communication module 360, so that the mobile terminal 300 can communicate with the network and other devices through wireless communication technology.
  • the mobile terminal 300 implements a display function through a GPU, a display screen 394, and an application processor.
  • the GPU is an image processing microprocessor, which is connected to the display screen 394 and the application processor.
  • the GPU is used to perform mathematical and geometric calculations and is used for graphics rendering.
  • the processor 310 may include one or more GPUs that execute program instructions to generate or change display information.
  • the display screen 394 is used to display images, videos, and the like.
  • the display screen 394 includes a display panel.
  • the mobile terminal 300 may include one or N display screens 394, and N is a positive integer greater than one.
  • the mobile terminal 300 can implement a shooting function through an ISP, a camera 393, a video codec, a GPU, a display screen 394, and an application processor.
  • the ISP is used to process the data fed back by the camera 393.
  • the ISP may be provided in the camera 393.
  • the camera 393 is used to capture still images or videos.
  • the mobile terminal 300 may include 1 or N cameras 393, and N is 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, so as to expand the storage capacity of the mobile terminal 300.
  • the external memory card communicates with the processor 310 through the external memory interface 320 to realize the data storage function. For example, save music, video and other files in an external memory card.
  • the internal memory 321 may be used to store computer executable program code, where the executable program code includes instructions.
  • the processor 310 executes various functional applications and data processing of the mobile terminal 300 by running instructions stored in the internal memory 321.
  • the internal memory 321 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, a universal flash storage (UFS), and the like.
  • the mobile terminal 300 can implement audio functions through an audio module 370, a speaker 370A, a receiver 370B, a microphone 370C, a headset interface 370D, and an application processor. For example, music playback, recording, etc.
  • the audio module 370 is used to convert digital audio information into an analog audio signal for output, and also used to convert an analog audio input into a digital audio signal.
  • the audio module 370 may be provided in the processor 310, or part of the functional modules of the audio module 370 may be provided in the processor 310.
  • the speaker 370A also called a "speaker” is used to convert audio electrical signals into sound signals.
  • the receiver 370B also called “earpiece”, is used to convert audio electrical signals into sound signals.
  • Microphone 370C also called “microphone”, “microphone”, is used to convert sound signals into electrical signals.
  • the mobile terminal 300 may be provided with at least one microphone 370C.
  • the earphone interface 370D is used to connect wired earphones.
  • the earphone interface 370D may be a USB interface 330, or a 3.5mm open mobile terminal platform (OMTP) standard interface, or a cellular telecommunications industry association (cellular telecommunications industry association of the USA, CTIA) standard interface.
  • OMTP open mobile terminal platform
  • CTIA cellular telecommunications industry association
  • the button 390 includes a power button, a volume button, and so on.
  • the button 390 may be a mechanical button. It can also be a touch button.
  • the mobile terminal 300 may receive key input, and generate key signal input related to user settings and function control of the mobile terminal 300.
  • the motor 391 can generate vibration prompts.
  • the motor 391 can be used for incoming call vibration notification, and can also be used for touch vibration feedback.
  • the indicator 392 may be an indicator light, which may be used to indicate the charging status, power change, and may also be used to indicate messages, missed calls, notifications, and so on.
  • the SIM card interface 395 is used to connect to the SIM card. The SIM card can be inserted into the SIM card interface 395 or pulled out from the SIM card interface 395 to achieve contact and separation with the mobile terminal 300.
  • the mobile terminal 300 may support 1 or N SIM card interfaces, and N is a positive integer greater than 1.
  • the SIM card interface 195 can support Nano SIM cards, Micro SIM cards, SIM cards, etc.
  • the mobile terminal 300 adopts an eSIM, that is, an embedded SIM card.
  • the eSIM card can be embedded in the mobile terminal 300 and cannot be separated from the mobile terminal 300.
  • the embodiment of the present application provides a wireless charging method for a mobile terminal, which can be applied to the process of wireless charging for the second mobile terminal 120 by the first mobile terminal 110 shown in FIG. 1.
  • the embodiment of the present application uses the first mobile terminal 110 shown in FIG. 1 as a mobile phone 210 and the second mobile terminal 120 as a smart watch 220 as an example to introduce a wireless charging method for a mobile terminal provided by the embodiment of the present application. .
  • the mobile phone 210 can detect the wireless signal from the smart watch 220 (such as a Bluetooth signal or the feedback signal of the NFC detection signal transmitted by the mobile phone 210); if the wireless signal from the smart watch 220 meets the preset conditions, the mobile phone 210 can The reverse wireless charging function of the mobile phone 210 is automatically turned on to wirelessly charge the smart watch 220. Among them, the mobile phone 210 can wirelessly charge the smart watch 220 according to the wireless charging protocol.
  • the wireless signal from the smart watch 220 such as a Bluetooth signal or the feedback signal of the NFC detection signal transmitted by the mobile phone 210.
  • the Bluetooth signal of the above-mentioned wireless signal satisfies the preset condition, which may specifically be: the RSSI of the Bluetooth signal is greater than the preset intensity threshold.
  • the above-mentioned wireless signal may be a feedback signal of the NFC detection signal; the wireless signal received by the mobile phone 210 from the smart watch 220 satisfies a preset condition, which may specifically be: the mobile phone 210 starts from transmitting the NFC detection signal and starts at the preset duration (such as The feedback signal is received within the preset duration).
  • the mobile phone 210 may receive the wireless signal from the smart watch 220.
  • the wireless signal may meet the preset conditions.
  • the smart watch 220 when the user wants to use the mobile phone 210 to wirelessly charge the smart watch 220, the smart watch 220 will be placed on the mobile phone 210 for a long time, so that the distance between the mobile phone 210 and the smart watch 220 is less than the 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 means that the user needs to use the mobile phone 210 to wirelessly charge the smart watch 220. At this time, the mobile phone 210 can automatically start the wireless power supply function, and wirelessly charge the smart watch 220 according to the wireless charging protocol. Through the method of the embodiments of the present application, automatic wireless charging between mobile terminals can be realized.
  • the above-mentioned wireless signal is a Bluetooth paging signal
  • the mobile phone 210 and the smart watch 220 have not established a Bluetooth connection as an example to introduce the method of the embodiment of the present application.
  • the above-mentioned wireless signal (ie, the Bluetooth paging signal) meeting the preset condition includes: the RSSI of the Bluetooth paging signal received by the mobile phone 210 from the smart watch 220 is greater than the preset intensity threshold.
  • the wireless charging method for a mobile terminal provided in an embodiment of the present application may include steps 401 to 404.
  • Step 401 The smart watch 220 broadcasts a Bluetooth paging signal.
  • the smart watch 220 may broadcast a Bluetooth paging signal (ie, page) in a frequency modulation manner.
  • the Bluetooth paging signal includes the Bluetooth address of the smart watch 220.
  • the aforementioned Bluetooth address may be a media access control (media access control, MAC) address.
  • the aforementioned Bluetooth paging signal may also include the Bluetooth name of the smart watch 220.
  • Step 402 The mobile phone 210 scans the Bluetooth paging signal broadcast by other devices, and detects the received signal strength indication (RSSI) of the Bluetooth paging signal.
  • RSSI received signal strength indication
  • the mobile phone 210 can periodically scan Bluetooth paging signals (ie, page) broadcast by other devices.
  • the mobile phone 210 can scan Bluetooth paging signals broadcast by other devices in a frequency modulation manner.
  • the mobile phone 210 and the smart watch 220 synchronize to the same hopping pattern, the mobile phone 210 scans (ie receives) the Bluetooth paging signal broadcast by the smart watch 220.
  • the RSSI of the Bluetooth paging signal can 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.
  • the signal power of the Bluetooth paging signal will be attenuated when the Bluetooth paging signal is sent from the transmitting end (such as the smart watch 220) to the receiving end (such as the mobile phone 210).
  • the distance between the receiving end and the transmitting end will affect the attenuation of the signal power of the Bluetooth paging signal.
  • the signal strength 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 mobile phone 210.
  • the unit of RSSI is decibel relative to one milliwatt (dBm).
  • the transmission power of the smart watch 220 to transmit the above-mentioned Bluetooth paging signal is 1 milliwatt (mw).
  • the signal power of the Bluetooth paging signal received by the mobile phone 210 is also 1 mW.
  • the RSSI of the Bluetooth paging signal is zero.
  • the above ideal state does not exist in practical applications; therefore, the value of RSSI is basically a negative number. The closer the distance between the receiving end and the transmitting end, the larger the RSSI of the Bluetooth paging signal received by the receiving end, and the closer it is to zero.
  • the mobile phone 210 can receive the Bluetooth paging signal from the smart watch 220 (ie, the transmitting end).
  • the receiving end (such as the mobile phone 210) can use the following formula (1) to 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 (such as the smart watch 220).
  • n is the environmental attenuation factor.
  • represents the absolute value of RSSI of the Bluetooth paging signal received by the receiving end from the transmitting end; K is the absolute value of the RSSI of the Bluetooth paging signal received by the receiving end from the transmitting end when the distance between the transmitting end and the receiving end is 1 meter.
  • the mobile phone 210 can send a Bluetooth response signal to the smart watch 220 to establish an asynchronous connection-oriented link (ACL) link with the smart watch 220 . Then, the mobile phone 210 can exchange control commands with the smart watch 220 through the ACL link to configure a data channel (Channel) between the mobile phone 210 and the smart watch 220. Finally, the mobile phone 210 can transmit Bluetooth data (such as audio data, video data, or text data, etc.) to the smart watch 220 through the data channel.
  • ACL asynchronous connection-oriented link
  • the mobile phone 210 can exchange control commands with the smart watch 220 through the ACL link to configure a data channel (Channel) between the mobile phone 210 and the smart watch 220.
  • Bluetooth data such as audio data, video data, or text data, etc.
  • the RSSI of the Bluetooth paging signal received by the mobile phone 210 can represent the distance between the mobile phone 210 and the transmitting end of the Bluetooth paging signal. It can be understood that when the user wants to use the mobile phone 210 to wirelessly charge the smart watch 220, the smart watch 220 will be placed on the mobile phone 210 for a long time. As a result, the distance between the mobile phone 210 and the smart watch 220 is relatively close, so that the mobile phone 210 can wirelessly charge the smart watch 220.
  • the RSSI of the Bluetooth paging signal received by the mobile phone 210 from the smart watch 220 is large (for example, greater than the preset intensity threshold), it means that the distance between the mobile phone 210 and the smart watch 220 is relatively close, and the user may want to use the mobile phone 210.
  • the demand for wireless charging of the smart watch 220 is large (for example, greater than the preset intensity threshold).
  • 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 intensity threshold.
  • step 404 is executed; if the RSSI of the Bluetooth paging signal received by the mobile phone 210 from the smart watch 220 is less than or equal to the preset intensity Threshold, then step 402 is executed.
  • the smart watch 220 may broadcast the Bluetooth paging signal multiple times. Therefore, the mobile phone 210 may receive multiple Bluetooth paging signals broadcast by the smart watch 220 within a period of time. If the mobile phone 210 receives the Bluetooth paging signal from the smart watch 220 within a period of time (such as the first preset duration), the RSSI of the Bluetooth paging signal is greater than the preset intensity threshold, the user wants to use the mobile phone 210 to wirelessly charge the smart watch 220 High sex.
  • the method of the embodiment of the present application may include step 403a. That is, the above step 403 can be replaced with step 403a.
  • Step 403a The mobile phone 210 determines whether the RSSI of the Bluetooth paging signal received from the smart watch 220 within the first preset time period is greater than a preset intensity threshold.
  • step 404 is executed; if the mobile phone 210 receives the RSSI from the smart watch within the first preset time period If the RSSI of any Bluetooth paging signal of the watch 220 is less than or equal to the preset intensity threshold, step 402 is executed.
  • the aforementioned first preset duration may be any duration such as 2 seconds (s), 3s, or 5s.
  • the mobile phone 210 can determine whether the RSSI of each received Bluetooth paging signal is greater than a preset intensity 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 the first preset period of time is greater than Preset intensity threshold.
  • step 403a taking the mobile phone 210 to determine whether the RSSI of the Bluetooth paging signal received from the smart watch 220 is greater than the preset intensity threshold, the specific implementation process of step 403a is introduced.
  • the Bluetooth function of the mobile phone 210 After the Bluetooth function of the mobile phone 210 is turned on, it can scan for Bluetooth paging signals broadcast by other devices; then, the mobile phone 210 can perform step a to step e to implement the function of step 403a.
  • the above step 403a may include step a to step e shown in FIG. 6.
  • Step a If the mobile phone 210 receives a Bluetooth paging signal from the smart watch 220, it is determined whether the RSSI of the Bluetooth paging signal is greater than a preset intensity threshold.
  • step b is executed; if the RSSI of the Bluetooth paging signal received in step a is less than or equal to the preset strength threshold, then continue to execute step a.
  • Step b The mobile phone 210 starts a timer for the smart watch 220 to start the timer.
  • the initial value of the timer can be 00:00:00.
  • the mobile phone 210 can 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 the preset intensity threshold.
  • step c If the RSSI of the Bluetooth paging signal received in step c is greater than the preset strength threshold, then continue to step d; if the RSSI of the Bluetooth paging signal received in step c is less than or equal to the preset strength threshold, then step e is executed.
  • Step d The mobile phone 210 determines whether the timing duration of the timer is greater than or equal to the first preset duration.
  • step c is continued; if the timing duration of the timer is greater than or equal to the first preset duration, step 404 is executed.
  • the mobile phone 210 may also perform step e.
  • Step e The mobile phone 210 resets the timer.
  • the mobile phone 210 may receive the Bluetooth paging signal from the smart watch 220 again. In response to this situation, the mobile phone 210 can continue from step a to step e.
  • the following situation may exist: the distance between the smart watch 220 and the mobile phone 210 is relatively short, so that the mobile phone 210 receives 1 or 2 Bluetooth of the smart watch 220 within the first preset time period (for example, 2s).
  • the RSSI of the paging signal is greater than the preset intensity threshold.
  • the distance between the smart watch 220 and the mobile phone 210 becomes longer, so that the mobile phone 210 cannot receive the Bluetooth paging signal from the smart watch 220.
  • adopting the above-mentioned solution of step a to step e will cause the mobile phone 210 to misjudge whether the smart watch 220 is wirelessly charged.
  • N is a preset positive integer.
  • N may be the number of Bluetooth paging signals received by the receiving end from the transmitting end obtained through multiple statistics in the following cases.
  • the above situation is specifically: within the first preset time period, the distance between the receiving end and the transmitting end is less than the preset distance threshold.
  • the above step 403a may include step A to step H shown in FIG. 7A.
  • 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 the preset intensity threshold.
  • step B is executed; if the RSSI of the Bluetooth paging signal received in step A is less than or equal to the preset strength threshold, then step A is continued.
  • Step B The mobile phone 210 starts a timer for the smart watch 220 to start the timer; and starts a counter, the initial count value of the counter is 0 or 1.
  • the initial value of the timer can be 00:00:00.
  • the mobile phone 210 can 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 the preset intensity threshold.
  • step C If the RSSI of the Bluetooth paging signal received in step C is greater than the preset strength threshold, then continue to perform steps D and E; if the RSSI of the Bluetooth paging signal received in step C is less than or equal to the preset strength threshold, then perform step G and step H.
  • Step D Add 1 to the count value of the counter.
  • Step E The mobile phone 210 determines whether the timing duration of the timer is greater than or equal to the first preset duration.
  • step C if the timing duration of the timer is less than the first preset duration, step C is continued; if the timing duration of the timer is greater than or equal to the first preset duration, step F is executed.
  • Step F The mobile phone 210 judges whether the count value of the counter is equal to N.
  • step F if the count value of the counter is equal to N, the mobile phone 210 can perform step 404; if the count value of the counter is not equal to N (for example, less than N), the mobile phone 210 can perform step C. Optionally, if the count value of the counter is equal to N, the mobile phone 210 may also perform step G and step H.
  • Step G The mobile phone 210 resets the timer.
  • Step H The mobile phone clears the counter.
  • the mobile phone 210 may receive the Bluetooth paging signal from the smart watch 220 again. In response to this situation, the mobile phone 210 can continue step A to step H.
  • the mobile phone 210 may receive the Bluetooth paging signal from the smart phone 220 through a straight line transmission, or it may receive the reflection transmission from the smart phone 220 through obstacles.
  • Bluetooth paging signal the attenuation degree of the Bluetooth paging signal transmitted through reflection is greater than that of the Bluetooth paging signal transmitted through a straight line.
  • the RSSI parameters that affect the Bluetooth paging signal include not only the distance between the receiving end and the transmitting end, but also the transmission mode of the Bluetooth paging signal (such as linear transmission or reflective transmission).
  • the RSSI of the Bluetooth paging signal is also affected by the channel through which the Bluetooth paging signal is transmitted.
  • the parameters that affect 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, and the influence of various factors such as the channel.
  • the mobile phone 210 can detect the RSSI of multiple Bluetooth paging signals within the first preset period of time, and use the multiple Bluetooth paging signals. The average value of the RSSI of the signal, and then compare whether the average value is greater than the preset intensity threshold.
  • the mobile phone 210 can detect the RSSI of the Bluetooth paging signal on a fixed channel. In this way, the accuracy of the RSSI detected by the mobile phone 210 can be improved.
  • the mobile phone 210 may send the first prompt message.
  • the first prompt information is used to request the user to confirm whether the smart watch 220 is wirelessly charged. For example, as shown in FIG. 7B, the smart watch 220 is close to the mobile phone 210, and the distance between the smart watch 220 and the mobile phone 210 is less than the preset distance threshold.
  • the mobile phone 210 can display the first prompt message 701 shown in FIG. 7B, such as "Please confirm whether to use this phone to wirelessly charge the smart watch!.
  • the first prompt message 701 also includes a "Yes" button and a "No" button.
  • the mobile phone 210 may execute step 404.
  • the mobile phone 210 may no longer perform step 403a to step 404 within the fourth preset time period.
  • the first operation is used to trigger the mobile phone 210 to wirelessly charge the smart watch 220.
  • the first operation is the user's click operation on the "Yes" button shown in FIG. 7B.
  • the second operation is used to trigger the mobile phone 210 to not need to wirelessly charge the smart watch 220.
  • the second operation is the user's click operation on the "No" button shown in FIG. 7B.
  • the foregoing fourth preset duration may be any duration such as 1 hour, 2 hours, 3 hours, 6 hours, or 24 hours.
  • the mobile phone 210 may also send a second prompt message at the same time when the mobile phone 210 sends out the first prompt message.
  • the second prompt information may be a preset ring tone or vibration prompt.
  • the mobile phone 210 may not receive the first operation or the second operation within the fourth preset time period. Perform step 403a-step 404.
  • Step 404 The mobile phone 210 activates the reverse wireless charging function to wirelessly charge the smart watch 220.
  • the mobile phone 210 can activate the reverse wireless charging function, and wirelessly charge the smart watch 220 according to the wireless charging protocol.
  • wireless charging technology can follow any protocol such as Qi protocol, (Power Matters Alliance, PMA) protocol, or (Alliance for Wireless Power, A4WP) protocol.
  • Qi protocol Power Matters Alliance
  • PMA Power Matters Alliance
  • A4WP Alliance for Wireless Power
  • the wireless charging of the mobile terminal may follow the above-mentioned Qi protocol.
  • the mobile phone 210 activates the reverse wireless charging function to wirelessly charge the smart watch 220 (that is, step 404), which may specifically include step 801 to step 808.
  • step 404 may include step 801 to step 808.
  • Step 801 The mobile phone 210 determines whether a metal object is placed on the wireless charging coil of the mobile phone 210.
  • the wireless charging control module 214 of the mobile phone 210 may include a matching circuit, and the matching circuit may include a combination of capacitors. If a metal object is placed on the wireless charging coil of the mobile phone 210, the mobile phone 210 can detect a change in the voltage across the capacitor in the matching circuit.
  • the aforementioned metal object may be the wireless charging coil of the smart watch 220, or may be other metal foreign objects.
  • the metal foreign object may be a coin.
  • the mobile phone 210 may perform step 802. If the mobile phone 210 determines that no metal objects are placed on the wireless charging coil of the mobile phone 210, step 801 is continued.
  • Step 802 The mobile phone 210 transmits an Internet packet detector (Packet Internet Groper, ping) message through the wireless charging coil.
  • an Internet packet detector Packet Internet Groper, ping
  • the aforementioned metal object may be the wireless charging coil of the smart watch 220, or may be other metal foreign objects.
  • the above ping message is used for foreign object detection. If the aforementioned metal object is the wireless charging coil of the smart watch 220, the smart watch 220 may reply to the mobile phone 210 a response message of the ping message, such as a signal strength (Signal Strength) message. If the metal object is a metal foreign object, the mobile phone 210 will not receive the response message of the ping message.
  • the alternating electromagnetic field generated by the wireless charging coil of the mobile phone 210 causes the metal foreign objects to generate heat. If the metal foreign body generates a lot of heat, it may cause the combustible materials around the metal foreign body to burn, posing a safety hazard. In order to eliminate potential safety hazards, in some embodiments, the mobile phone 210 may perform foreign object detection before 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 the Signal Strength message to the mobile phone 210 through the wireless charging coil.
  • the Signal Strength message may indicate the degree of coupling between the wireless charging coil of the smart watch 220 and the wireless charging coil of the mobile phone 210, that is, whether the wireless charging coil of the smart watch 220 and the wireless charging coil of the mobile phone 210 are placed correctly. Among them, the Signal Strength message may be called a signal strength message.
  • Step 805 The mobile phone 210 receives the Signal Strength message from the smart watch 220 within the third preset time period, and then enters the identification and configuration (ID&Configuration) phase, and waits to receive the ID message and configuration (Configuration) message from the smart watch 220.
  • ID&Configuration identification and configuration
  • the aforementioned ID message may include the VID of the smart watch 220 and the product serial number.
  • the Configuration message is used to indicate the maximum power required by the smart watch 220 for wireless charging.
  • the mobile phone 210 may receive the Signal Strength message from the smart watch 220 through the wireless charging coil.
  • the smart watch 220 may send the ID message and the Configuration message to the mobile 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 parameters of the wireless charging coil of the mobile phone 210 according to the Configuration message to wirelessly charge the smart watch 220.
  • the mobile phone 210 can 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 the product model and MAC address of the smart watch 220.
  • the mobile phone 210 can identify the product model and MAC address of the smart watch 220 according to the ID message of the smart watch 220.
  • the mobile phone 210 in order to prevent the mobile phone 210 from consuming the power of the mobile phone 210 by wirelessly charging other's electronic products; the mobile phone 210 can identify the identity information of the smart watch 220 through the ID message.
  • the smart watch 220 can be wirelessly charged; if the smart watch 220 is not a pre-configured mobile terminal, the mobile phone 210 will not wirelessly charge the smart watch 220.
  • the mobile phone 210 can compare the identity information of the smart watch 220 with the identity information of the pre-configured mobile terminal to determine whether the smart watch 220 is a pre-configured mobile terminal.
  • the identity information of the pre-configured mobile terminal may include identity information such as product model and MAC address. It should be noted that the ID message is optional. In this case, as long as the distance between the mobile phone 210 and the smart watch 220 is less than the preset distance threshold, the mobile phone 210 can wirelessly charge the smart watch 220.
  • Step 807 The smart watch 220 sends a charge status (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 the output parameters of the wireless charging coil of the mobile phone 210 according to the Charge Status message to wirelessly charge the smart watch 220.
  • the Charge Status message may indicate that the power of the smart watch 220 has reached a preset power threshold (such as 100% or 95%, etc.), and the mobile phone 210 may stop wireless charging the smart watch 220.
  • a preset power threshold such as 100% or 95%, etc.
  • 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 step 801 to step 808.
  • the method for wirelessly charging the smart watch 220 by the mobile phone 210 according to the wireless charging protocol reference may be made to the detailed description in the conventional technology, which will not be repeated in the embodiment of the present application.
  • the embodiment of the present application provides a wireless charging method for a mobile terminal. If the RSSI of the Bluetooth paging signal received from the smart watch 220 by the mobile phone 210 within the first preset period of time is greater than the preset intensity threshold, the mobile phone 210 can automatically follow the wireless charging method.
  • the charging protocol is wireless charging of the smart watch 220. In this way, automatic wireless charging between mobile terminals can be realized.
  • the mobile phone 210 can interact with the smart watch 220 to complete foreign object detection, coil position confirmation, and charging parameter negotiation.
  • the aforementioned foreign object detection, coil position confirmation, and charging parameter negotiation may be referred to as the secondary confirmation of wireless charging; the RSSI judgment of the aforementioned Bluetooth paging signal is referred to as the primary judgment of wireless charging.
  • automatic wireless charging between mobile terminals can be realized through the above-mentioned double judgment of the first judgment and the second confirmation.
  • the mobile phone 210 and the smart watch 220 can communicate through the Bluetooth connection.
  • the mobile phone 210 and the smart watch 220 can transmit service data such as audio data, video data, or text data.
  • the mobile phone 210 and the smart watch 220 will also transmit Bluetooth control information, such as a Bluetooth signal used to detect the quality parameters of the Bluetooth connection.
  • Bluetooth signals are collectively referred to as Bluetooth signals.
  • the wireless charging method for a mobile terminal may include steps 901 to 904.
  • Step 901 The smart watch 220 sends a Bluetooth signal to the mobile 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 can be understood that when the Bluetooth paging signal is sent from the transmitting end (such as the smart watch 220) to the receiving end (such as the mobile phone 210) receiving the Bluetooth signal, the signal power of the Bluetooth signal will be attenuated. For example, the distance between the receiving end and the transmitting end will affect the attenuation of the signal power of the Bluetooth signal. The greater the distance between the receiving end and the transmitting end, the greater the attenuation of the signal power of the Bluetooth signal; the smaller the distance between the receiving end and the transmitting end, the smaller the attenuation of the signal power of the Bluetooth signal.
  • the mobile phone 210 receives the Bluetooth signal from the smart watch 220 within a period of time (such as the first preset duration) and the RSSI of the Bluetooth signal is greater than the preset intensity threshold, the user wants to use the mobile phone 210 as smart
  • the possibility of wireless charging of the watch 220 is higher.
  • the method of the embodiment of the present application may further include step 903.
  • Step 903 The mobile phone 210 determines whether the RSSI of the Bluetooth signal received from the smart watch 220 is greater than a preset intensity threshold.
  • step 904 is executed; if the RSSI of the Bluetooth signal received by the mobile phone 210 from the smart watch 220 is less than or equal to the preset intensity threshold, then Step 902 is executed.
  • the method in this embodiment of the present application may include step 903a, that is, the above step 903 may be replaced with step 903a.
  • Step 903a The mobile phone 210 determines whether the RSSI of the Bluetooth signal received from the smart watch 220 within the first preset time period is greater than a preset intensity threshold.
  • step 904 is performed; if the mobile phone 210 is received from the smart watch 220 within the first preset time period If the RSSI of any Bluetooth signal is less than or equal to the preset intensity threshold, step 902 is executed.
  • the aforementioned first preset duration may be any duration such as 2 seconds (s), 3s, or 5s. It should be noted that, for step 903a, reference may be made to the detailed description of step 403, which will not be repeated in this embodiment of the present application.
  • step 903a if the RSSI of the Bluetooth signal received from the smart watch 220 by the mobile phone 210 within the first preset time period is greater than the preset intensity threshold, the mobile phone 210 may send the first prompt message. In response to the user's first operation on the first prompt message, the mobile phone 210 may perform step 904. In response to the second operation of the user, the mobile phone 210 may no longer perform step 903a to step 904 within the fourth preset time period.
  • the mobile phone 210 may also send a second prompt message at the same time when the mobile phone 210 sends out the first prompt message.
  • the second prompt information may be a preset ring tone or vibration prompt.
  • Step 903a-step 904 are executed.
  • Step 904 The mobile phone 210 automatically turns on the reverse wireless charging function to wirelessly charge the smart watch 220.
  • the mobile phone 210 can automatically turn on the reverse wireless charging function, and wirelessly charge the smart watch 220 according to the wireless charging protocol. It should be noted that, for step 904, reference may be made to the detailed description of step 404 above, which is not repeated here in the embodiment of the present application.
  • the embodiment of the application provides a wireless charging method for a mobile terminal. If the RSSI of the Bluetooth signal received by the mobile phone 210 from the smart watch 220 within the first preset period of time is greater than the preset intensity threshold, the mobile phone 210 can automatically follow the wireless charging protocol Wirelessly charge the smart watch 220. In this way, automatic wireless charging between mobile terminals can be realized.
  • the mobile phone 210 can interact with the smart watch 220 to complete foreign object detection, coil position confirmation, and charging parameter negotiation.
  • the aforementioned foreign object detection, coil position confirmation, and charging parameter negotiation may be referred to as the secondary confirmation of wireless charging; the RSSI judgment of the aforementioned Bluetooth signal is referred to as the primary judgment of wireless charging.
  • automatic wireless charging between mobile terminals can be realized through the above-mentioned double judgment of the first judgment and the second confirmation.
  • the wireless charging method for a mobile terminal provided in an embodiment of the present application may include steps 1001 to 1003.
  • Step 1001 the mobile phone 210 periodically sends an NFC detection signal.
  • the mobile phone 210 may send the NFC detection signal according to the first preset period when the screen is on.
  • the bright screen scene may be any scene where the mobile phone 210 displays a lock screen interface, the mobile phone 210 displays a main interface (ie desktop), or the mobile phone 210 displays any application interface.
  • the mobile phone 210 may send the NFC detection signal according to the second preset period when the screen of the mobile phone 210 is off (ie, the mobile phone 210 is black).
  • the foregoing first preset period may be any time length such as 500 milliseconds (ms), 400 ms, 600 ms, or 450 ms.
  • the second preset period can be any time length such as 2 seconds (s), 3s, 1s, or 1.5s.
  • Step 1002 the mobile phone 210 detects the feedback signal of the aforementioned NFC detection signal.
  • the mobile phone 210 is an active NFC device
  • the smart watch 220 is an active NFC device or a passive NFC device.
  • the active NFC device can activate itself to send signals or data to other NFC devices.
  • Passive NFC devices cannot activate themselves to actively send signals or data to other NFC devices; however, they can generate feedback in response to signals emitted by active NFC devices.
  • the smart watch 220 can sense the NFC detection signal.
  • a preset distance threshold such as 10 centimeters (cm)
  • the smart watch 220 that passively receives the NFC detection signal can sense the NFC detection signal.
  • both the mobile phone 210 and the smart watch 220 can feel the corresponding feedback.
  • the feedback signal of the aforementioned NFC detection signal is that the mobile phone 210 detects a signal level change.
  • step 1003 is executed. If the feedback signal of the NFC detection signal is not detected within the second preset period of time since sending the NFC detection signal, then step 1001 to step 1002 are executed again.
  • the second preset duration may be equal to or less than the foregoing first preset period.
  • the second preset duration may be equal to or less than the second preset period.
  • the mobile phone 210 may send the first prompt message. In response to the user's first operation on the first prompt information, the mobile phone 210 may perform step 1003. In response to the second operation of the user, the mobile phone 210 may no longer perform step 1001 to step 1003 within the fourth preset time period.
  • the mobile phone 210 may also send a second prompt message at the same time when the mobile phone 210 sends out the first prompt message.
  • the second prompt information may be a preset ring tone or vibration prompt.
  • Step 1001 to step 1003 are performed.
  • Step 1003 The mobile phone 210 turns on the reverse wireless charging function to wirelessly charge the smart watch 220.
  • the mobile phone 210 can turn on the reverse wireless charging function, and wirelessly charge the smart watch 220 according to the wireless charging protocol. It should be noted that, for step 1003, reference may be made to the detailed description of step 404, which is not repeated in the embodiment of the present application.
  • the embodiment of the application provides a wireless charging method for a mobile terminal.
  • the mobile phone 210 can periodically transmit an NFC detection signal; if the feedback signal of the NFC detection signal is detected within a second preset time period, the mobile phone 210 can automatically charge according to the wireless charging.
  • the agreement is for the smart watch 220 to charge wirelessly. In this way, automatic wireless charging between mobile terminals can be realized.
  • the mobile phone 210 can interact with the smart watch 220 to complete foreign object detection, coil position confirmation, and charging parameter negotiation.
  • the aforementioned foreign object detection, coil position confirmation, and charging parameter negotiation may be referred to as the second confirmation of wireless charging; whether the feedback signal of the NFC detection signal is received is referred to as the first determination of wireless charging.
  • automatic wireless charging between mobile terminals can be realized through the above-mentioned double judgment of the first judgment and the second confirmation.
  • step 1003 can be directly executed, and the smart watch is based on the wireless charging protocol. 220 wireless charging.
  • the NFC antenna of the mobile phone 210 and the wireless charging coil of the mobile phone 210 are not set at the same position.
  • the mobile phone 210 can send out the prompt message 1101 shown in FIG. 11 (such as The third prompt message).
  • the third prompt information is used to prompt the user to place the smart watch 220 at the position where the wireless charging coil of the mobile phone 210 is located. In this way, the mobile phone 210 can perform step 1003 to wirelessly charge the smart watch 220 according to the wireless charging protocol.
  • FIG. 11 only shows an example of the third prompt information.
  • the specific manner in which the mobile phone 210 sends out the third prompt message includes but is not limited to the manner shown in FIG. 11. Other ways for the mobile phone 210 to send out the third prompt message will not be repeated here in this embodiment of the application.
  • the mobile phone 210 in order to realize the wireless charging of the smart watch 220 by the mobile phone 210, the mobile phone 210 periodically sends a ping message, that is, a digital (digital) ping message, when performing step 404, step 904, and step 1003.
  • a ping message that is, a digital (digital) ping message
  • FIG. 12 it is a waveform diagram of the ping message sent by the mobile phone 210 measured through experiments.
  • the ping message is a periodic pulse signal.
  • the mobile phone 210 sends a ping message every 10s, that is, the transmission period T of the ping message is 10s.
  • the signal amplitude I (such as average current) of the ping message is about 30 milliamps (mA).
  • 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 is specifically: the cumulative power consumption of 312 mA throughout the day (24 hours).
  • the power consumption of the battery of the mobile phone 210 is specifically: the cumulative power consumption of 312 mA throughout the day (24 hours).
  • it is measured through experiments that using the method of the embodiment of the present application, it takes 1 second from the mobile phone 210 to determine that the smart watch 220 is wirelessly charged through a wireless signal to the mobile phone 210 performing step 806 for the smart watch 220 to wirelessly charge.
  • the power consumption of wireless charging detection by the method of the embodiment of the present application is low, and the power consumption of wireless charging detection can be reduced. In addition, it takes less time to perform wireless charging detection, which can improve the efficiency of automatic wireless charging between mobile terminals.
  • the mobile terminal may include: a wireless charging coil, a wireless communication module, a memory, and one or more processors.
  • the wireless charging coil, wireless communication module, memory and processor are coupled.
  • the memory is used to store computer program code, and the computer program code includes computer instructions.
  • the processor executes the computer instructions, the mobile terminal can execute various functions or steps executed by the mobile phone 210 in the foregoing method embodiment.
  • the structure of the mobile terminal can refer to the structure of the mobile terminal 300 shown in FIG. 3.
  • the embodiment of the present application also provides a chip system.
  • 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.
  • the interface circuit 1302 can be used to receive signals from other devices (such as the memory of a mobile terminal).
  • the interface circuit 1302 may be used to send signals to other devices (such as the processor 1301).
  • the interface circuit 1302 may read instructions stored in the memory, and send the instructions to the processor 1301.
  • the mobile terminal such as the mobile terminal 300 shown in FIG.
  • the chip system may also include other discrete devices, which are not specifically limited in the embodiment of the present application.
  • the embodiment of the present application also provides a computer-readable storage medium, which includes computer instructions, when the computer instructions run on the above-mentioned mobile terminal (the mobile terminal 300 shown in FIG. 3), the The mobile terminal executes various functions or steps performed by the mobile phone in the above method embodiments.
  • the embodiments of the present application also provide a computer program product, which when the computer program product runs on a computer, causes the computer to execute each function or step performed by the mobile phone in the above method embodiment.
  • the disclosed device and method can be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the modules or units is only a logical function division. In actual implementation, there may be other division methods, for example, multiple units or components may be divided. It can be combined or integrated into another device, or some features can be omitted or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate parts may or may not be physically separate.
  • the parts displayed as units may be one physical unit or multiple physical units, that is, they may be located in one place, or they may be distributed to multiple different places. . Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit can be implemented in the form of hardware or software functional unit.
  • the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium.
  • the technical solutions of the embodiments of the present application are essentially or the part that contributes to the prior art, or all or part of the technical solutions can be embodied in the form of a software product, and the software product is stored in a storage medium. It includes several instructions to make a device (which may be a single-chip microcomputer, a chip, etc.) or a processor (processor) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the foregoing storage media include: U disk, mobile hard disk, read only memory (read only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disk and other media that can store program codes.

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Abstract

本申请提供一种移动终端的无线充电方法及移动终端，涉及通信技术领域和无线充电技术领域，可以实现移动终端之间的自动无线充电。具体方案包括：第一移动终端具备通过无线充电线圈接收其他设备的无线充电输入的功能和反向无线充电功能；该反向无线充电功能是第一移动终端通过无线充电线圈为其他移动终端无线充电的功能；其中，第一移动终端检测来自第二移动终端的无线信号；如果该无线信号满足预设条件，第一移动终端自动开启反向无线充电功能，为第二移动终端无线充电。

Description

一种移动终端的无线充电方法及移动终端
本申请要求于2019年12月26日提交国家知识产权局、申请号为201911369466.8、发明名称为“一种移动终端的无线充电方法及移动终端”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请实施例涉及通信技术领域和无线充电技术领域，尤其涉及一种移动终端的无线充电方法及移动终端。
背景技术
电池是移动终端上必不可少的器件，是一种可以为移动终端提供电力储能的工具。其中，移动终端的电池可以通过充电储存电力，然后通过放电为移动终端供电。
目前，移动终端可以通过有线充电和无线充电两种方式为电池充电。其中，移动终端(如手机)不仅可以使用无线充电底座进行无线充电；还可以为另一个移动终端(如手机或智能手表)无线充电。
在移动终端为另一个移动终端无线充电的场景下，需要用户手动启动移动终端的无线充电功能，该移动终端才可以为其他移动终端无线充电。例如，以手机1为手机2无线充电为例，手机1响应于用户的操作启动无线充电功能后，才可以为手机2无线充电。
综上所述，目前的无线充电方案，无法实现一个移动终端为另一个移动终端的自动无线充电。
发明内容
本申请实施例提供一种移动终端的无线充电方法及移动终端，可以实现移动终端之间的自动无线充电。
第一方面，本申请提供一种移动终端的无线充电方法，该方法可以应用于第一移动终端。该第一移动终端不仅具备通过无线充电线圈接收其他设备的无线充电输入的功能，还具备反向无线充电功能。该反向无线充电功能为第一移动终端通过无线充电线圈为其他移动终端无线充电的功能。
上述方法可以包括：第一移动终端检测来自第二移动终端的无线信号(如短距离无线信号)；第一移动终端可以判断该无线信号是否满足预设条件。如果该无线信号满足预设条件，第一移动终端可以自动开启上述反向无线充电功能，为第二移动终端无线充电。
示例性的，上述无线信号满足预设条件可以包括：无线信号的信号强度大于预设强度阈值；或者，第一移动终端接收到无线信号的时间在预设的时间范围内。从第一移动终端与第二移动终端的位置关系来看，当第一移动终端与第二移动终端之间的距离小于预设距离阈值时，第一移动终端才可能会接收到来自第二移动终端的无线信号，该无线信号才可能满足预设条件。一般而言，当用户想要使用第一移动终端为第二移动终端无线充电时，才会长时间的将第二移动终端放置在第一移动终端的周围(如第 一移动终端上)，使得第一移动终端和第二移动终端之间的距离小于预设距离阈值。由此可见，如果无线信号满足预设条件，则表示用户存在使用第一移动终端为第二移动终端无线充电的需求。在这种情况下，第一移动终端可以自动开启上述反向无线充电功能，为第二移动终端无线充电。综上所述，通过本申请的方法，可以实现移动终端之间的自动无线充电。
结合第一方面，在一种可能的设计方式中，上述无线信号是蓝牙寻呼信号。上述第一移动终端检测来自所述第二移动终端的无线信号，可以包括：第一移动终端扫描蓝牙寻呼信号；接收到来自第二移动终端的蓝牙寻呼信号后，检测来自第二移动终端的蓝牙寻呼信号的接收信号强度指示(received signal strength indication，RSSI)。
在这种设计方式中，上述无线信号满足预设条件，具体可以包括：第一移动终端接收自第二移动终端的蓝牙寻呼信号的RSSI大于预设强度阈值。
其中，蓝牙寻呼信号的RSSI用于表征第一移动终端接收到该蓝牙寻呼信号的信号强度。蓝牙寻呼信号的RSSI与移动终端之间的距离成反比。距离越远，蓝牙寻呼信号的RSSI越小；距离越近，蓝牙寻呼信号的RSSI越大。因此，如果第一移动终端接收自第二移动终端的蓝牙寻呼信号的RSSI大于预设强度阈值，则表示第一移动终端与第二移动终端的距离较近，用户可能存在想要使用第一移动终端为第二移动终端无线充电的需求。在这种情况下，第一移动终端可以自动开启上述反向无线充电功能，为第二移动终端无线充电。
结合第一方面，在另一种可能的设计方式中，上述无线信号是第一移动终端与第二移动终端建立蓝牙连接后，来自第二移动终端的蓝牙信号。上述第一移动终端检测来自第二移动终端的无线信号，具体可以包括：第一移动终端接收来自所述第二移动终端的蓝牙信号，并检测来自第二移动终端的蓝牙信号的RSSI。
在这种设计方式中，上述无线信号满足预设条件，具体可以包括：第一移动终端接收自第二移动终端的蓝牙信号的RSSI大于预设强度阈值。
由上述一种设计方式中的描述可知：如果第一移动终端接收自第二移动终端的蓝牙信号的RSSI大于预设强度阈值，则表示第一移动终端与第二移动终端的距离较近，用户可能存在想要使用第一移动终端为第二移动终端无线充电的需求。在这种情况下，第一移动终端可以自动开启上述反向无线充电功能，为第二移动终端无线充电。
结合第一方面，在另一种可能的设计方式中，上述第二移动终端可以多次发送无线信号(如广播蓝牙寻呼信号)。因此，第一移动终端在一段时间内，可能会接收到来自第二移动终端多个蓝牙信号。如果第一移动终端在一段时间(如第一预设时长)内接收到来自第二移动终端的蓝牙信号的RSSI均大于预设强度阈值，则用户想要使用第一移动终端为第二移动终端无线充电的可能性较高。
基于此，上述无线信号满足预设条件，可以包括：第一移动终端在第一预设时长内、接收自第二移动终端的无线信号的RSSI均大于预设强度阈值。如此，可以降低第一移动终端对是否为第二移动终端无线充电的误判，可以提升无线充电效率。
结合第一方面，在另一种可能的设计方式中，为了避免由于以下原因导致第一移动终端对是否为第二移动终端无线充电的误判，上述无线信号满足预设条件包括：第一移动终端在第一预设时长内、接收自所述第二移动终端的N个无线信号的RSSI均大 于所述预设强度阈值；其中，N为预先设定的正整数。
其中，导致第一移动终端对是否为第二移动终端无线充电的误判的原因可以为：第一移动终端与第二移动终端之间的距离较近，使得第一移动终端在第一预设时长(如2s)内接收到第二移动终端的1或2个蓝牙寻呼信号的RSSI大于预设强度阈值。然后，第一移动终端与第二移动终端之间的距离变大，使得第一移动终端无法接收到来自第二移动终端的蓝牙寻呼信号。
在这种设计方式中，当第一移动终端在第一预设时长内、接收自所述第二移动终端的N个无线信号的RSSI均大于所述预设强度阈值时，第一移动终端才可以自动开启反向无线充电功能。这样，可以降低第一移动终端对是否为第二移动终端无线充电的误判，可以提升无线充电效率。
结合第一方面，在另一种可能的设计方式中，上述无线信号是距离无线通信技术(near field communication，NFC)探测信号的反馈信号。上述第一移动终端检测来自第二移动终端的无线信号，可以包括：第一移动终端周期性发送NFC探测信号，并检测NFC探测信号的反馈信号。其中，无线信号满足预设条件包括：第一移动终端在从发送NFC探测信号开始的第二预设时长内接收到反馈信号。
可以理解，如果第一移动终端在从发送NFC探测信号开始的第二预设时长内接收到反馈信号，则表示第二移动终端距离第一移动终端较近，用户存在使用第一移动终端为第二移动终端无线充电的需求。在这种情况下，第一移动终端可以自动开启上述反向无线充电功能，为第二移动终端无线充电。
结合第一方面，在另一种可能的设计方式中，上述第一移动终端周期性发送近距离无线通信技术NFC探测信号，可以包括：第一移动终端在亮屏场景下，按照第一预设周期周期性发送NFC探测信号；第一移动终端在灭屏场景下，按照第二预设周期周期性发送NFC探测信号。其中，第一预设周期小于第二预设周期。
结合第一方面，在另一种可能的设计方式中，上述第一移动终端的NFC天线与第一移动终端的无线充电线圈设置在第一移动终端的不同位置。在第一移动终端自动开启所述反向无线充电功能，为所述第二移动终端无线充电之前，本申请的方法还包括：第一移动终端发出提示信息。该提示信息用于提示用户将第二移动终端放置在第一移动终端的无线充电线圈所在位置处。
可以理解，在NFC天线与无线充电线圈设置在第一移动终端的不同位置的情况下，如果第二移动终端没有放置在第一移动终端的无线充电线圈所在位置处，第一移动终端则无法为第二移动终端无线充电。第一移动终端发出上述提示信息，可以提示用户将第二移动终端放置在第一移动终端的无线充电线圈所在位置处，这样可以提升无线充电的效率。
结合第一方面，在另一种可能的设计方式中，上述第一移动终端自动开启所述反向无线充电功能，为所述第二移动终端无线充电，可以包括：如果第一移动终端确定没有金属物体放置在第一移动终端的无线充电线圈上，第一移动终端自动开启反向无线充电功能，为第二移动终端无线充电。
可以理解，在第一移动终端周围有金属异物的情况下，第一移动终端的无线充电线圈所产生的交变电磁场则使上述金属异物产生热量。如果该金属异物所产生的热量 较多，则可能会引发该金属异物周围的易燃物品燃烧，存在安全隐患。通过该设计方式的方法，可以排除上述安全隐患。
结合第一方面，在另一种可能的设计方式中，上述第一移动终端自动开启反向无线充电功能，为第二移动终端无线充电，可以包括：第一移动终端通过无线充电线圈发射因特网包探测器ping消息；如果第一移动终端在第三预设时长内通过无线充电线圈接收到来自第二移动终端的信号强度消息，第一移动终端进入标识和配置阶段，以等待接收来自第二移动终端的配置消息；配置消息用于指示第二移动终端进行无线充电所需的最大功率；第一移动终端通过无线充电线圈接收来自第二移动终端的配置消息，根据配置消息配置第一移动终端的无线充电线圈的输出参数，通过无线充电线圈为第二移动终端无线充电。
结合第一方面，在另一种可能的设计方式中，在第一移动终端进入标识和配置阶段之后，本申请的方法还包括：所述第一移动终端通过所述第一移动终端的无线充电线圈接收来自所述第二移动终端的标识(identify，ID)消息。该ID消息中包括第二移动终端的生产厂商标识(vendor ID，VID)和产品序列号；第一移动终端根据标识ID消息判断第二移动终端是否为预配置的移动终端；如果第二移动终端是预配置的移动终端，第一移动终端通过无线充电线圈为第二移动终端无线充电。
通过该设计方式的方法，第一移动终端可以选择性的为预配置的移动终端无线充电。这样，可以减少第一移动终端的电流损耗。
第二方面，本申请实施例提供一种移动终端，该移动终端是上述第一移动终端。该第一移动终端包括无线充电线圈、无线通信模块、存储器和一个或多个处理器。该无线充电线圈、无线通信模块、存储器与处理器耦合。
其中，上述无线充电线圈用于接收其他设备的无线充电输入，为第一移动终端充电。上述无线充电线圈还用于向其他移动终端发射无线充电信号实现第一移动终端的反向无线充电功能。上述存储器用于存储计算机程序代码。该计算机程序代码包括计算机指令。当上述处理器执行该计算机指令时，移动终端(即第一移动终端)执行如第一方面及其任一种可能的设计方式所述的方法。
第三方面，本申请实施例提供一种芯片系统，该芯片系统应用于包括无线充电线圈、无线通信模块和存储器的移动终端，如第二方面所述的移动终端。该芯片系统包括一个或多个接口电路和一个或多个处理器。该接口电路和处理器通过线路互联。该接口电路用于从移动终端的存储器接收信号，并向处理器发送接收到的信号。该信号可以包括存储器中存储的计算机指令。当上述处理器执行该计算机指令时，上述移动终端可以执行如第一方面及其任一种可能的设计方式所述的方法。
第四方面，本申请实施例提供一种计算机可读存储介质，该计算机可读存储介质包括计算机指令，当所述计算机指令在移动终端上运行时，使得该移动终端执行如第一方面及其任一种可能的设计方式所述的方法。
第五方面，本申请实施例提供一种计算机程序产品，当所述计算机程序产品在计算机上运行时，使得所述计算机执行如第一方面及其任一种可能的设计方式所述的方法。
可以理解地，上述提供的第二方面及其任一种可能的设计方式所述的电子设备， 第三方面所述的芯片系统，第四方面所述的计算机可读存储介质，第五方面所述的计算机程序产品所能达到的有益效果，可参考如第一方面及其任一种可能的设计方式中的有益效果，此处不再赘述。
附图说明
图1为本申请实施例提供的一种无线充电系统的架构示意图；
图2A为现有技术提供的一种无线充电的终端界面示意图；
图2B为本申请实施例提供的一种无线充电原理示意图；
图3为本申请实施例提供的一种手机的硬件结构示意图；
图4A为本申请实施例提供的一种移动终端的无线充电方法流程图；
图4B为本申请实施例提供的一种移动终端的无线充电方法流程图；
图5为本申请实施例提供的一种蓝牙信号传输示意图；
图6为本申请实施例提供的另一种移动终端的无线充电方法流程图；
图7A为本申请实施例提供的另一种移动终端的无线充电方法流程图；
图7B为本申请实施例提供的一种无线充电的终端界面示意图；
图8为本申请实施例提供的另一种移动终端的无线充电方法流程图；
图9A为本申请实施例提供的另一种移动终端的无线充电方法流程图；
图9B为本申请实施例提供的另一种移动终端的无线充电方法流程图；
图10为本申请实施例提供的另一种移动终端的无线充电方法流程图；
图11为本申请实施例提供的另一种无线充电的终端界面示意图；
图12为本申请实施例提供的一种ping信号的波形示意图；
图13为本申请实施例提供的一种芯片系统的结构示意图。
具体实施方式
本申请实施例提供一种移动终端的无线充电方法，可以应用于一个移动终端为另一个移动终端无线充电过程中。示例性的，请参考图1，其示出本申请实施例提供的一种无线充电系统的架构示意图。如图1所示，该无线充电系统100可以包括第一移动终端110和第二移动终端120。其中，第一移动终端110可以自动为第二移动终端120无线充电。
本申请实施例中，第一移动终端110的无线充电线圈与第二移动终端120的无线充电线圈耦合，第一移动终端110可以通过无线充电线圈向第二移动终端120发射无线充电信号，为第二移动终端120无线充电。其中，本申请实施例中，第一移动终端110通过无线充电线圈为第二移动终端120无线充电的功能称为“反向无线充电功能”。
当然，上述第一移动终端110也可以通过无线充电线圈接收其他设备的无线充电输入。例如，该其他设备可以为第一移动终端110的无线充电底座；或者，该其他设备可以为其他支持无线充电的移动终端(如第三移动终端)。
上述第一移动终端110也可以支持有线充电。本申请实施例中所述的有线充电是指：第一移动终端100的充电接口可以连接有线充电器(也称为电源适配器)，接收有线充电器的充电输入。例如，上述充电接口可以是通用串行总线(universal serial bus，USB)接口。
需要说明的是，本申请实施例的方法应用于第一移动终端110为第二移动终端120 无线充电的过程中。
示例性的，本申请实施例中的第一移动终端110可以是手机、平板电脑、桌面型、膝上型、手持计算机、笔记本电脑、超级移动个人计算机(ultra-mobile personal computer，UMPC)、上网本，以及蜂窝电话、个人数字助理(personal digital assistant，PDA)、增强现实(augmented reality，AR)\虚拟现实(virtual reality，VR)设备、车载设备等可以为其他移动终端无线充电的移动终端，本申请实施例对该第一移动终端110的具体形态不作特殊限制。
本申请实施例中的第二移动终端120可以是手机、可穿戴设备(如智能手表等)、真无线立体声(true wireless stereo，TWS)耳机、平板电脑、膝上型、手持计算机、笔记本电脑、超级移动个人计算机(ultra-mobile personal computer，UMPC)、上网本，以及蜂窝电话、个人数字助理(personal digital assistant，PDA)、增强现实(augmented reality，AR)\虚拟现实(virtual reality，VR)设备等可以接收其他设备的无线充电输入的移动终端，本申请实施例对该第二移动终端120的具体形态不作特殊限制。
为了便于理解，本申请实施例结合附图，以图1所示的第一移动终端110是手机210，图1所示的第二移动终端120是智能手表220为例，对第一移动终端110为第二移动终端120无线充电的原理进行说明。
请参考图2B，其示出本申请实施例提供的一种手机210和智能手表220的充电电路结构示意图。
如图2B所示，手机210包括：处理器211、电池212、充电控制模块213、无线充电控制模块214、无线充电线圈215和充电接口216。如图2B所示，智能手表220包括：处理器221、电池222、充电控制模块223、无线充电控制模块224、无线充电线圈225和充电接口226。
其中，本申请实施例中，手机210作为无线充电信号的发射端，智能手表220作为无线充电信号的接收端，手机210为智能手表220无线充电。因此，如图2B所示，手机210的无线充电线圈215可以称为发射(Tx)线圈，智能手表220的无线充电线圈225可以称为接收(Rx)线圈。
一般而言，手机210的反向无线充电功能是默认关闭的。手机210可以接收用户对图2A中的(a)所示的设置界面中“电池”选项201的点击操作，响应于该点击操作，手机210可以显示图2A中的(b)所示的电池界面202。电池界面202包括“无线反向充电”开关203。响应于用户对“无线反向充电”开关203的开启操作，手机210可以启动反向无线充电功能。
手机210的反向无线充电功能开启后，手机210的处理器221可以控制充电控制模块213接收电池212的输入，向无线充电控制模块214输入该直流电信号。无线充电控制模块214可以将该直流电信号转换为交变电信号，然后向无线充电线圈215输入该交变电信号。无线充电线圈215响应于该交变电信号，可以产生交变电磁场。
智能手表220的无线充电线圈225与手机210的无线充电线圈215耦合。智能手表220的无线充电功能开启后，智能手表220的处理器221可以控制无线充电线圈(即Rx线圈)225开始工作。无线充电线圈(即Rx线圈)225感应无线充电线圈(即Tx 线圈)215发出的交变电磁场，可以产生交变电信号，并向无线充电控制模块224输入该交变电信号。无线充电控制模块224可以将该交变电信号整流成直流电信号，并向充电控制模块223输入该直流电信号。充电控制模块223可以根据该直流电信号为电池222充电。
其中，上述无线充电控制模块214和无线充电控制模块224可以包括匹配电路。该匹配电路可以包括电容组合。无线充电控制模块214中的匹配电路用于与无线充电线圈215形成LC谐振，以提升无线充电线圈215的发射效率。无线充电控制模块224中的匹配电路用于与无线充电线圈225形成LC谐振，以提升无线充电线圈225的接收效率。
当然，上述手机210也可以通过无线充电线圈215接收其他设备的无线充电输入，即手机210支持正向无线充电。手机210的正向无线充电原理，可以参考手机210为智能手表220无线充电过程中，智能手表220的无线充电原理。手机210也可以支持有线充电。例如，如图2B所示，手机210的处理器211连接充电接口216，用于检测充电接口216上是否有充电输入(即有线充电输入)。可以理解，当连接了电源的电源适配器217(即有线充电器)连接充电接口216时，处理器211可以检测到充电接口216上有充电输入。此时，处理器211可以与充电控制模块213通信，对充电控制模块213进行参数配置，使得充电控制模块213按照该参数配置为电池212充电。具体的，充电控制模块213连接充电接口216，用于接收由电源适配器217通过充电接口216的充电输入，为电池212充电。例如，该充电接口216可以是USB接口。
智能手表220也可以支持有线充电。例如，如图2B所示，智能手表220的处理器221连接充电接口226。充电接口226用于连接电源适配器227为智能手表220有线充电。其中，当连接了电源的电源适配器227连接充电接口226时，智能手表220中各个器件交互为电池222充电的原理，可以参考手机210的有线充电原理，本申请实施例这里不予赘述。
需要说明的是，图2B仅示出一种手机210和智能手表220的充电电路结构示意图。本申请实施例中移动终端的充电电路结构包括但不限于图2B所示的结构。例如，图2B所示的充电控制模块213和无线充电控制模块214的功能可以集成在一个充电管理模块中实现。并且，手机210和智能手表220的充电电路结构可以不同。
请参考图3，为本申请实施例提供的一种移动终端(如第一移动终端110或第二移动终端120)的结构示意图。如图3所示，该移动终端300可以包括处理器310，外部存储器接口320，内部存储器321，通用串行总线(universal serial bus，USB)接口330，充电管理模块340，电池341，无线充电线圈342，天线1，天线2，移动通信模块350，无线通信模块360，音频模块370，扬声器370A，受话器370B，麦克风370C，耳机接口370D，传感器模块380，按键390，马达391，指示器392，摄像头393，显示屏394，以及用户标识模块(subscriber identification module，SIM)卡接口395等。
其中，传感器模块380可以包括压力传感器，陀螺仪传感器，气压传感器，磁传感器，加速度传感器，距离传感器，接近光传感器，指纹传感器，温度传感器，触摸传感器，环境光传感器，骨传导传感器等。
示例性的，图3所示的移动终端300可以是图2B所示的手机210。当移动终端300是手机210时，图3所示的处理器310是手机210的处理器211，电池341是手机210的电池212，充电管理模块340包括手机210的充电控制模块213和无线充电控制模块214，无线充电线圈342是手机210的无线充电线圈215，USB接口330是手机210的充电接口216。
示例性的，图3所示的移动终端300可以是图2B所示的智能手表220。当移动终端300是智能手表220时，图3所示的处理器310是智能手表220的处理器221，电池341是智能手表220的电池222，充电管理模块340包括智能手表220的充电控制模块223和无线充电控制模块224，无线充电线圈342是智能手表220的无线充电线圈225，USB接口330是智能手表220的充电接口226。
可以理解的是，本发明实施例示意的结构并不构成对移动终端300的具体限定。在本申请另一些实施例中，移动终端300可以包括比图示更多或更少的部件，或者组合某些部件，或者拆分某些部件，或者不同的部件布置。图示的部件可以以硬件，软件或软件和硬件的组合实现。
处理器310可以包括一个或多个处理单元，例如：处理器310可以包括应用处理器(application processor，AP)，调制解调处理器，图形处理器(graphics processing unit，GPU)，图像信号处理器(image signal processor，ISP)，控制器，存储器，视频编解码器，数字信号处理器(digital signal processor，DSP)，基带处理器，和/或神经网络处理器(neural-network processing unit，NPU)等。其中，不同的处理单元可以是独立的器件，也可以集成在一个或多个处理器中。例如，在本申请实施例中，处理器310(即图2B所示的处理器211或处理器221)可以是应用处理器AP。
其中，控制器可以是移动终端300的神经中枢和指挥中心。控制器可以根据指令操作码和时序信号，产生操作控制信号，完成取指令和执行指令的控制。
处理器310中还可以设置存储器，用于存储指令和数据。在一些实施例中，处理器310中的存储器为高速缓冲存储器。该存储器可以保存处理器310刚用过或循环使用的指令或数据。如果处理器310需要再次使用该指令或数据，可从所述存储器中直接调用。避免了重复存取，减少了处理器310的等待时间，因而提高了系统的效率。
在一些实施例中，处理器310可以包括一个或多个接口。接口可以包括集成电路(inter-integrated circuit，I2C)接口，集成电路内置音频(inter-integrated circuit sound，I2S)接口，脉冲编码调制(pulse code modulation，PCM)接口，通用异步收发传输器(universal asynchronous receiver/transmitter，UART)接口，移动产业处理器接口(mobile industry processor interface，MIPI)，通用输入输出(general-purpose input/output，GPIO)接口，用户标识模块(subscriber identity module，SIM)接口，和/或USB接口等。
USB接口330是符合USB标准规范的接口，具体可以是Mini USB接口，Micro USB接口，USB Type C接口等。USB接口330可以用于连接充电器(如图2B所示的电压适配器217)为移动终端300充电，也可以用于移动终端300与外围设备之间传输数据。也可以用于连接耳机，通过耳机播放音频。该接口还可以用于连接其他电子设备或移动终端，例如AR设备等。
可以理解的是，本发明实施例示意的各模块间的接口连接关系，只是示意性说明，并不构成对移动终端300的结构限定。在本申请另一些实施例中，移动终端300也可以采用上述实施例中不同的接口连接方式，或多种接口连接方式的组合。
充电管理模块340用于从充电器接收充电输入。其中，充电器可以是无线充电器(如移动终端300的无线充电底座或者其他可以为移动终端300无线充电的设备)，也可以是有线充电器(如图2B所示的电压适配器217或电压适配器227)。
在一些实施例中，移动终端300可以支持有线充电。具体的，充电管理模块340可以通过USB接口330接收有线充电器的充电输入。
在另一些实施例中，移动终端300可以支持正向无线充电。充电管理模块340可以通过移动终端300的无线充电线圈342接收无线充电输入。具体的，充电管理模块340与无线充电线圈342通过匹配电路443连接。无线充电线圈342可以与上述无线充电器的无线充电线圈耦合，感应无线充电器的无线充电线圈发出的交变电磁场，产生交变电信号。无线充电线圈342产生的交变电信号经过匹配电路443传输至充电管理模块340，以便为电池341无线充电。
其中，充电管理模块340为电池341充电的同时，还可以为移动终端300供电。充电管理模块340接收电池341的输入，为处理器310，内部存储器321，外部存储器，显示屏394，摄像头393，和无线通信模块360等供电。充电管理模块340还可以用于监测电池341的电池容量，电池循环次数，电池健康状态(漏电，阻抗)等参数。在其他一些实施例中，充电管理模块340也可以设置于处理器310中。
在另一些实施例中，移动终端300可以支持无线充电。具体的，充电管理模块340还可以接收电池341的输入，将电池341输入的直流电信号转换为交流电信号。该交流电信号经过匹配电路443传输至无线充电线圈342。无线充电线圈342接收到该交流电信号可以产生交变电磁场。其他移动终端的无线充电线圈感应该交变电磁场，可以进行无线充电。即移动终端300还可以为其他移动终端无线充电。
其中，移动终端300进行有线充电、正向无线充电和无线充电的详细描述，可以参考上述实例中对手机210的有线充电、正向无线充电和无线充电的原理的介绍，本申请实施例这里不予赘述。
移动终端300的无线通信功能可以通过天线1，天线2，移动通信模块350，无线通信模块360，调制解调处理器以及基带处理器等实现。
天线1和天线2用于发射和接收电磁波信号。移动终端300中的每个天线可用于覆盖单个或多个通信频带。不同的天线还可以复用，以提高天线的利用率。例如：可以将天线1复用为无线局域网的分集天线。在另外一些实施例中，天线可以和调谐开关结合使用。
移动通信模块350可以提供应用在移动终端300上的包括2G/3G/4G/5G等无线通信的解决方案。无线通信模块360可以提供应用在移动终端300上的包括无线局域网(wireless local area networks，WLAN)(如无线保真(wireless fidelity，Wi-Fi)网络)，蓝牙(bluetooth，BT)，全球导航卫星系统(global navigation satellite system，GNSS)，调频(frequency modulation，FM)，NFC，红外技术(infrared，IR)等无线通信的解决方案。在一些实施例中，移动终端300的天线1和移动通信模块350 耦合，天线2和无线通信模块360耦合，使得移动终端300可以通过无线通信技术与网络以及其他设备通信。
移动终端300通过GPU，显示屏394，以及应用处理器等实现显示功能。GPU为图像处理的微处理器，连接显示屏394和应用处理器。GPU用于执行数学和几何计算，用于图形渲染。处理器310可包括一个或多个GPU，其执行程序指令以生成或改变显示信息。
显示屏394用于显示图像，视频等。显示屏394包括显示面板。在一些实施例中，移动终端300可以包括1个或N个显示屏394，N为大于1的正整数。
移动终端300可以通过ISP，摄像头393，视频编解码器，GPU，显示屏394以及应用处理器等实现拍摄功能。ISP用于处理摄像头393反馈的数据。在一些实施例中，ISP可以设置在摄像头393中。摄像头393用于捕获静态图像或视频。在一些实施例中，移动终端300可以包括1个或N个摄像头393，N为大于1的正整数。
外部存储器接口320可以用于连接外部存储卡，例如Micro SD卡，实现扩展移动终端300的存储能力。外部存储卡通过外部存储器接口320与处理器310通信，实现数据存储功能。例如将音乐，视频等文件保存在外部存储卡中。
内部存储器321可以用于存储计算机可执行程序代码，所述可执行程序代码包括指令。处理器310通过运行存储在内部存储器321的指令，从而执行移动终端300的各种功能应用以及数据处理。此外，内部存储器321可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件，闪存器件，通用闪存存储器(universal flash storage，UFS)等。
移动终端300可以通过音频模块370，扬声器370A，受话器370B，麦克风370C，耳机接口370D，以及应用处理器等实现音频功能。例如音乐播放，录音等。
音频模块370用于将数字音频信息转换成模拟音频信号输出，也用于将模拟音频输入转换为数字音频信号。在一些实施例中，音频模块370可以设置于处理器310中，或将音频模块370的部分功能模块设置于处理器310中。扬声器370A，也称“喇叭”，用于将音频电信号转换为声音信号。受话器370B，也称“听筒”，用于将音频电信号转换成声音信号。麦克风370C，也称“话筒”，“传声器”，用于将声音信号转换为电信号。移动终端300可以设置至少一个麦克风370C。耳机接口370D用于连接有线耳机。耳机接口370D可以是USB接口330，也可以是3.5mm的开放移动电子设备平台(open mobile terminal platform，OMTP)标准接口，美国蜂窝电信工业协会(cellular telecommunications industry association of the USA，CTIA)标准接口。
按键390包括开机键，音量键等。按键390可以是机械按键。也可以是触摸式按键。移动终端300可以接收按键输入，产生与移动终端300的用户设置以及功能控制有关的键信号输入。马达391可以产生振动提示。马达391可以用于来电振动提示，也可以用于触摸振动反馈。指示器392可以是指示灯，可以用于指示充电状态，电量变化，也可以用于指示消息，未接来电，通知等。SIM卡接口395用于连接SIM卡。SIM卡可以通过插入SIM卡接口395，或从SIM卡接口395拔出，实现和移动终端300的接触和分离。移动终端300可以支持1个或N个SIM卡接口，N为大于1的正整数。SIM卡接口195可以支持Nano SIM卡，Micro SIM卡，SIM卡等。在一些实施例中， 移动终端300采用eSIM，即：嵌入式SIM卡。eSIM卡可以嵌在移动终端300中，不能和移动终端300分离。
本申请实施例提供一种移动终端的无线充电方法，该方法可以应用于图1所示的第一移动终端110为第二移动终端120无线充电的过程中。示例性的，本申请实施例以图1所示的第一移动终端110为手机210，第二移动终端120为智能手表220为例，介绍本申请实施例提供的一种移动终端的无线充电方法。
在该方法中，手机210可以检测来自智能手表220的无线信号(如蓝牙信号或手机210发射的NFC探测信号的反馈信号)；如果来自智能手表220的无线信号满足预设条件，手机210则可以自动开启手机210的反向无线充电功能，为智能手表220无线充电。其中，手机210可以依据无线充电协议为智能手表220无线充电。
示例性的，上述无线信号的蓝牙信号；手机210接收自智能手表220的无线信号满足预设条件，具体可以为：该蓝牙信号的RSSI大于预设强度阈值。或者，上述无线信号可以为NFC探测信号的反馈信号；手机210接收自智能手表220的无线信号满足预设条件，具体可以为：手机210从发射NFC探测信号开始，在预设时长(如第二预设时长)内接收到反馈信号。
可以理解，从手机210与智能手表220的位置关系来看，当手机210和智能手表220之间的距离小于预设距离阈值时，手机210才可能会接收到来自智能手表220的无线信号，该无线信号才可能满足预设条件。
一般而言，当用户想要使用手机210为智能手表220无线充电时，才会长时间的将智能手表220放置在手机210上，使得手机210和智能手表220之间的距离小于预设距离阈值。因此，如果手机210和智能手表220之间的距离在第一预设时长内均小于预设距离阈值，则表示用户存在使用手机210为智能手表220无线充电的需求。此时，手机210可以自动启动无线供电功能，依据无线充电协议为智能手表220无线充电。通过本申请实施例的方法，可以实现移动终端之间的自动无线充电。
示例性的，在第一种应用场景中，以上述无线信号是蓝牙寻呼信号，手机210与智能手表220未建立蓝牙连接为例，介绍本申请实施例的方法。
在该第一种应用场景中，上述无线信号(即蓝牙寻呼信号)满足预设条件包括：手机210接收自智能手表220的蓝牙寻呼信号的RSSI大于预设强度阈值。具体的，如图4A所示，本申请实施例提供的移动终端的无线充电方法可以包括步骤401-步骤404。
步骤401、智能手表220广播蓝牙寻呼信号。
其中，智能手表220的蓝牙功能开启后，智能手表220可以以调频的方式广播蓝牙寻呼信号(即page)。该蓝牙寻呼信号中包括智能手表220的蓝牙地址。例如，上述蓝牙地址可以为媒体访问控制(media access control，MAC)地址。上述蓝牙寻呼信号中还可以包括智能手表220的蓝牙名称。
步骤402、手机210扫描其他设备广播的蓝牙寻呼信号，检测蓝牙寻呼信号的接收信号强度指示(received signal strength indication，RSSI)。
其中，手机210可以周期性扫描(scan)其他设备广播的蓝牙寻呼信号(即page)。手机210可以以调频的方式扫描其他设备广播的蓝牙寻呼信号。当手机210和智能手表220同步到同一个跳频图案(hopping pattern)时，手机210便扫描到(即接收到) 智能手表220广播的蓝牙寻呼信号。
手机210接收到每个蓝牙寻呼信号后，可以根据手机210接收到该蓝牙寻呼信号的信号功率，计算该蓝牙寻呼信号的RSSI。其中，蓝牙寻呼信号的RSSI用于表征手机210接收到该蓝牙寻呼信号的信号强度。
可以理解，从发射端(如智能手表220)发送蓝牙寻呼信号，到接收端(如手机210)接收到该蓝牙寻呼信号，该蓝牙寻呼信号的信号功率会发生衰减。例如，接收端与发射端的距离的远近，会影响蓝牙寻呼信号的信号功率的衰减程度。接收端与发射端的距离越大，蓝牙寻呼信号的信号功率的衰减越大；接收端与发射端的距离越小，蓝牙寻呼信号的信号功率的衰减越小。
其中，手机210接收到来自智能手表220的蓝牙寻呼信号的信号强度RSSI为：10×logP。P表示手机210接收到的蓝牙寻呼信号的信号功率。RSSI的单位是分贝毫瓦(decibel relative to one milliwatt，dBm)。
假设智能手表220发射上述蓝牙寻呼信号的发射功率为1毫瓦(mw)。那么，在理想状态下，即蓝牙寻呼信号不发生衰减的情况下，手机210接收到该蓝牙寻呼信号的信号功率也是1mw。该蓝牙寻呼信号的RSSI为零。但是，实际应用中不会存在上述理想状态；因此，RSSI的值基本都为负数。接收端与发射端的距离越近，接收端接收到蓝牙寻呼信号的RSSI越大，越接近于零。
例如，如图5中的(a)所示，手机210(即接收端)可以接收到来自智能手表220(即发射端)的蓝牙寻呼信号。接收端(如手机210)可以采用以下公式(1)，根据接收自发射端(如智能手表220)的蓝牙寻呼信号的RSSI，计算接收端与发射端之间的距离d。
Figure PCTCN2020124775-appb-000001
其中，n为环境衰减因子。|RSSI|表示接收端接收来自发射端的蓝牙寻呼信号的RSSI的绝对值；K为发射端与接收端距离1米时，接收端接收自发射端的蓝牙寻呼信号的RSSI的绝对值。
需要说明的是，手机210接收到智能手表220广播的蓝牙寻呼信号后，可以向智能手表220发送蓝牙响应信号，以与智能手表220建立异步面向连接(asynchronous connection-oriented link，ACL)链路。然后，手机210可以通过ACL链路与智能手表220交互控制命令，以配置手机210与智能手表220之间的数据信道(Channel)。最后，手机210可以通过数据信道与智能手表220传输蓝牙数据(如音频数据、视频数据或者文本数据等)。
由上述描述可知：手机210接收到的蓝牙寻呼信号的RSSI可以表征手机210与该蓝牙寻呼信号的发射端之间的距离。可以理解，用户想要使用手机210为智能手表220无线充电时，才会长时间的将智能手表220放置在手机210上。从而使得手机210与智能手表220的距离较近，方便手机210为智能手表220无线充电。因此，如果手机210接收到来自智能手表220的蓝牙寻呼信号的RSSI较大(如大于预设强度阈值)，则表示手机210与智能手表220的距离较近，用户可能存在想要使用手机210为智能手表220无线充电的需求。
步骤403、手机210判断接收自智能手表220的蓝牙寻呼信号的RSSI是否大于预 设强度阈值。
具体的，如果手机210接收自智能手表220的蓝牙寻呼信号的RSSI大于预设强度阈值，则执行步骤404；如果手机210接收自智能手表220的蓝牙寻呼信号的RSSI小于或等于预设强度阈值，则执行步骤402。
进一步的，智能手表220可以多次广播蓝牙寻呼信号。因此，手机210在一段时间内，可能会接收到智能手表220广播的多个蓝牙寻呼信号。如果手机210在一段时间(如第一预设时长)内接收到来自智能手表220的蓝牙寻呼信号的RSSI均大于预设强度阈值，则用户想要使用手机210为智能手表220无线充电的可能性较高。例如，如图4B所示，在上述步骤402之后，本申请实施例的方法可以包括步骤403a。即上述步骤403可以替换为步骤403a。
步骤403a、手机210判断在第一预设时长内接收自智能手表220的蓝牙寻呼信号的RSSI是否均大于预设强度阈值。
具体的，如果手机210在第一预设时长内接收自智能手表220的蓝牙寻呼信号的RSSI均大于预设强度阈值，则执行步骤404；如果手机210在第一预设时长内接收自智能手表220的任一蓝牙寻呼信号的RSSI小于或等于预设强度阈值，则执行步骤402。
例如，上述第一预设时长可以为2秒(s)，3s或者5s等任一时间长度。其中，手机210可以判断接收到的每个蓝牙寻呼信号的RSSI是否大于预设强度阈值，以判断手机210在第一预设时长内接收自智能手表220的蓝牙寻呼信号的RSSI是否均大于预设强度阈值。
示例性的，本申请实施例中，以手机210判断接收自智能手表220的蓝牙寻呼信号的RSSI是否大于预设强度阈值为例，介绍步骤403a的具体实现过程。手机210的蓝牙功能开启后，可以扫描其他设备广播的蓝牙寻呼信号；然后，手机210可以执行步骤a-步骤e，以实现步骤403a的功能。例如，上述步骤403a可以包括图6所示的步骤a-步骤e。
步骤a：如果手机210接收到来自智能手表220的蓝牙寻呼信号，则判断该蓝牙寻呼信号的RSSI是否大于预设强度阈值。
如果步骤a中接收的蓝牙寻呼信号的RSSI大于预设强度阈值，则执行步骤b；如果步骤a中接收的蓝牙寻呼信号的RSSI小于或等于预设强度阈值，则继续执行步骤a。
步骤b：手机210针对智能手表220启动计时器，使计时器开始计时。
其中，该计时器的初始值可以为00:00:00。步骤b之后，手机210可以执行步骤c。
步骤c：如果手机210接收到来自智能手表220的蓝牙寻呼信号，则判断该蓝牙寻呼信号的RSSI是否大于预设强度阈值。
如果步骤c中接收的蓝牙寻呼信号的RSSI大于预设强度阈值，则继续执行步骤d；如果步骤c中接收的蓝牙寻呼信号的RSSI小于或等于预设强度阈值，则执行步骤e。
步骤d：手机210判断计时器的计时时长是否大于或等于第一预设时长。
具体的，如果计时器的计时时长小于第一预设时长，则继续执行步骤c；如果计时器的计时时长大于或等于第一预设时长，则执行步骤404。可选的，如果计时器的计时时长大于或等于第一预设时长，手机210还可以执行步骤e。
步骤e：手机210将计时器清零。
其中，在步骤e之后，手机210可能会再次接收到来自智能手表220的蓝牙寻呼信号。针对这种情况，手机210可以继续步骤a-步骤e。
在一些实施例中，可能会存在如下情况：智能手表220与手机210之间的距离较近，使得手机210在第一预设时长(如2s)内接收到智能手表220的1或2个蓝牙寻呼信号的RSSI大于预设强度阈值。然后，智能手表220与手机210之间的距离变大，使得手机210无法接收到来自智能手表220的蓝牙寻呼信号。如此，采用上述步骤a-步骤e的方案，则会导致手机210对是否为智能手表220无线充电的误判。
针对这种情况，如果手机210在第一预设时长内接收自智能手表220的N个蓝牙寻呼信号的RSSI均大于预设强度阈值，手机210则执行步骤404。其中，N为预先设定的正整数。N可以为在以下情况下经过多次统计得到的、接收端接收自发射端的蓝牙寻呼信号的数量。例如，N可以为大于2的正整数，如N＝3，N＝5或者N＝6等。上述情况具体为：上述第一预设时长内，接收端与发射端距离小于预设距离阈值。
上述步骤403a可以包括图7A所示的步骤A-步骤H。
步骤A：如果手机210接收到来自智能手表220的蓝牙寻呼信号，则判断该蓝牙寻呼信号的RSSI是否大于预设强度阈值。
如果步骤A中接收的蓝牙寻呼信号的RSSI大于预设强度阈值，则执行步骤B；如果步骤A中接收的蓝牙寻呼信号的RSSI小于或等于预设强度阈值，则继续执行步骤A。
步骤B：手机210针对智能手表220启动计时器，使计时器开始计时；并启动计数器，计数器的初始计数值为0或1。
其中，该计时器的初始值可以为00:00:00。步骤B之后，手机210可以执行步骤C。
步骤C：如果手机210接收到来自智能手表220的蓝牙寻呼信号，则判断该蓝牙寻呼信号的RSSI是否大于预设强度阈值。
如果步骤C中接收的蓝牙寻呼信号的RSSI大于预设强度阈值，则继续执行步骤D和步骤E；如果步骤C中接收的蓝牙寻呼信号的RSSI小于或等于预设强度阈值，则执行步骤G和步骤H。
步骤D：计数器的计数值加1。
步骤E：手机210判断计时器的计时时长是否大于或等于第一预设时长。
具体的，如果计时器的计时时长小于第一预设时长，则继续执行步骤C；如果计时器的计时时长大于或等于第一预设时长，则执行步骤F。
步骤F：手机210判断计数器的计数值是否等于N。
步骤F之后，如果计数器的计数值等于N，手机210则可以执行步骤404；如果计数器的计数值不等于N(如小于N)，手机210则可以执行步骤C。可选的，如果计数器的计数值等于N，手机210还可以执行步骤G和步骤H。
步骤G：手机210将计时器清零。
步骤H：手机将计数器清零。
其中，在步骤G和步骤H之后，手机210可能会再次接收到来自智能手表220的蓝牙寻呼信号。针对这种情况，手机210可以继续步骤A-步骤H。
需要注意的是，如图5中的(b)所示，手机210可能会通过直线传输接收到来自智能手机220的蓝牙寻呼信号，也可能会接收到来自智能手机220经过障碍物反射传输的蓝牙寻呼信号。其中，相比于通过直线传输的蓝牙寻呼信号，通过反射传输的蓝牙寻呼信号的衰减程度更大。也就是说，影响蓝牙寻呼信号的RSSI的参数不仅包括接收端与发射端之间的距离，还包括蓝牙寻呼信号的传输方式(如直线传输或者反射传输)。并且，蓝牙寻呼信号的RSSI还会受到传输该蓝牙寻呼信号的信道的影响。综上所述，影响蓝牙寻呼信号的RSSI的参数包括：接收端与发射端之间的距离、蓝牙寻呼信号的传输方式，以及信道等多种因素的影响。
本申请实施例中，综合考虑上述多种因素对蓝牙寻呼信号的RSSI的影响，手机210可以检测第一预设时长内的多个蓝牙寻呼信号的RSSI，并采用该多个蓝牙寻呼信号的RSSI的平均值，然后再对比该平均值是否大于预设强度阈值。或者，手机210可以在固定信道，检测蓝牙寻呼信号的RSSI。这样，可以提升手机210检测得到RSSI的准确性。
在一些实施例中，在步骤403a之后，如果手机210在第一预设时长内接收自智能手表220的蓝牙寻呼信号的RSSI均大于预设强度阈值，手机210可以发出第一提示信息。该第一提示信息用于请求用户确认是否为智能手表220无线充电。例如，如图7B所示，智能手表220靠近手机210，智能手表220与手机210的距离小于预设距离阈值。手机210可以显示图7B所示的第一提示信息701，如“请确认是否使用本机为智能手表无线充电！”。该第一提示信息701还包括“是”按钮和“否”按钮。
响应于用户的第一操作，手机210可以执行步骤404。响应于用户的第二操作，手机210在第四预设时长内可以不再执行步骤403a-步骤404。其中，第一操作用于触发手机210为智能手表220无线充电。例如，第一操作是用户对图7B所示的“是”按钮的单击操作。第二操作用于触发手机210不需要为智能手表220无线充电。例如，第二操作是用户对图7B所示的“否”按钮的单击操作。例如，上述第四预设时长可以为1小时、2小时、3小时、6小时或者24小时等任一时长。
可选的，为了提醒用户及时输入上述第一操作或第二操作，手机210发出第一提示信息的同时，还可以发出第二提示信息。该第二提示信息可以为预设铃音或者振动提示。
在另一些实施例中，如果从发出上述第一提示信息开始，手机210在第五预设时长内未接收到上述第一操作或第二操作，手机210在第四预设时长内可以不再执行步骤403a-步骤404。
步骤404、手机210启动反向无线充电功能，为智能手表220无线充电。
其中，手机210可以启动反向无线充电功能，依据无线充电协议为智能手表220无线充电。目前无线充电技术(Wireless charging technology)可以遵循Qi协议、(Power Matters Alliance，PMA)协议或者(Alliance for Wireless Power，A4WP)协议等任一协议。例如，本申请实施例中，移动终端的无线充电可以遵循上述Qi协议。
示例性的，手机210启动反向无线充电功能，为智能手表220无线充电(即步骤404)，具体可以包括步骤801-步骤808。例如，如图8所示，步骤404可以包括步骤801-步骤808。
步骤801：手机210判断是否有金属物体放置在手机210的无线充电线圈上。
其中，由上述实施例可知，手机210的无线充电控制模块214可以包括匹配电路，该匹配电路可以包括电容组合。如果有金属物体放置在手机210的无线充电线圈上时，手机210可以检测到匹配电路中电容两端电压发生变化。其中，上述金属物体可能是智能手表220的无线充电线圈，也可能是其他的金属异物。例如，该金属异物可以为硬币。
具体的，如果手机210确定有金属物品放置在手机210的无线充电线圈上，手机210可以执行步骤802。如果手机210确定没有金属物品放置在手机210的无线充电线圈上，则继续执行步骤801。
步骤802、手机210通过无线充电线圈发射因特网包探测器(Packet Internet Groper，ping)消息。
其中，上述金属物体可能是智能手表220的无线充电线圈，也可能是其他的金属异物。上述ping消息用于进行异物检测。如果上述金属物体是智能手表220的无线充电线圈，智能手表220则可以向手机210回复该ping消息的响应消息，如信号强度(Signal Strength)消息。如果上述金属物体是金属异物，则手机210不会收到上述ping消息的响应消息。
可以理解，在手机210周围有金属异物的情况下，手机210的无线充电线圈所产生的交变电磁场则使上述金属异物产生热量。如果该金属异物所产生的热量较多，则可能会引发该金属异物周围的易燃物品燃烧，存在安全隐患。为了排除安全隐患，在一些实施例中，手机210在为其他设备无线充电之前，可以进行异物检测。
步骤803、智能手表220通过无线充电线圈接收ping消息。
步骤804、智能手表220通过无线充电线圈向手机210回复Signal Strength消息。
其中，Signal Strength消息可以指示智能手表220的无线充电线圈与手机210的无线充电线圈的耦合程度，即智能手表220的无线充电线圈与手机210的无线充电线圈的放置位置是否正确。其中，Signal Strength消息可以称为信号强度消息。
步骤805、手机210在第三预设时长内接收到来自智能手表220的Signal Strength消息，则进入标识和配置(ID&Configuration)阶段，等待接收来自智能手表220的ID消息和配置(Configuration)消息。
其中，上述ID消息中可以包括智能手表220的VID和产品序列号。Configuration消息用于指示智能手表220进行无线充电所需要的最大功率。手机210可以通过无线充电线圈接收来自智能手表220的Signal Strength消息。智能手表220可以通过无线充电线圈向手机210发送ID消息和Configuration消息。
步骤806、手机210通过无线充电线圈接收来自智能手表220的ID消息和Configuration消息，根据Configuration消息调整手机210的无线充电线圈的输出参数，为智能手表220无线充电。
其中，手机210可以通过无线充电线圈接收来自智能手表220的ID消息和Configuration消息。该ID消息用于指示智能手表220的产品型号和MAC地址等身份信息。手机210可以根据智能手表220的ID消息识别出智能手表220的产品型号和 MAC地址等身份信息。在一些实施例中，为了避免手机210为他人的电子产品无线充电而消耗手机210的电量；手机210可以通过ID消息识别智能手表220的身份信息，如果智能手表220是预配置的移动终端，则可以为智能手表220无线充电；如果智能手表220不是预配置的移动终端，则手机210不会为智能手表220无线充电。其中，手机210可以对比智能手表220的身份信息与预配置的移动终端的身份信息，以判断智能手表220是否为预配置的移动终端。预配置的移动终端的身份信息可以包括：产品型号和MAC地址等身份信息。需要说明的是，ID消息是可选的。在这种情况下，只要手机210与智能手表220的距离小于预设距离阈值，手机210便可以为智能手表220无线充电。
步骤807、智能手表220在无线充电的过程中，向手机210发送充电状态(Charge Status)消息。该Charge Status消息用于指示智能手表220的当前电量和进行无线充电所需要的最大功率。
步骤808、手机210根据Charge Status消息调整手机210的无线充电线圈的输出参数，为智能手表220无线充电。
例如，Charge Status消息可以指示智能手表220的电量已达到预设电量阈值(如100％或95％等)，手机210则可以停止为智能手表220无线充电。
需要说明的是，手机210依据无线充电协议为智能手表220无线充电的方法，包括但不限于步骤801-步骤808所述的方法。手机210依据无线充电协议为智能手表220无线充电的其他方法可以参考常规技术中的详细描述，本申请实施例这里不予赘述。
本申请实施例提供一种移动终端的无线充电方法，如果手机210在第一预设时长内接收自智能手表220的蓝牙寻呼信号的RSSI均大于预设强度阈值，手机210则可以自动依据无线充电协议为智能手表220无线充电。这样，可以实现移动终端之间的自动无线充电。
其中，手机210依据无线充电协议为智能手表220无线充电的过程中，手机210可以与智能手表220交互，以完成异物检测、线圈位置确认和充电参数协商等。本申请实施例中，可以将上述异物检测、线圈位置确认和充电参数协商称为无线充电的二次确认；将上述蓝牙寻呼信号的RSSI判断称为无线充电的一次判断。本申请实施例中，可以通过上述一次判断和二次确认的双重判定，实现移动终端之间的自动无线充电。
在第二种应用场景中，以上述无线信号是蓝牙信号，手机210与智能手表220已建立蓝牙连接为例，介绍本申请实施例的方法。
其中，手机210与智能手表220建立蓝牙连接后，手机210与智能手表220便可以通过该蓝牙连接通信。通过该蓝牙连接，手机210与智能手表220可以传输音频数据、视频数据或者文本数据等业务数据。并且，即使手机210与智能手表220之间没有业务数据传输，手机210与智能手表220也会传输蓝牙控制信息，如用于检测蓝牙连接的质量参数的蓝牙信号。本申请实施例中，将上述业务数据和蓝牙控制信息统称为蓝牙信号。
如图9A所示，本申请实施例提供的移动终端的无线充电方法可以包括步骤901-步骤904。
步骤901、智能手表220向手机210发送蓝牙信号。
步骤902、手机接收来自智能手表220的蓝牙信号，检测蓝牙信号的RSSI。
其中，蓝牙信号的RSSI用于表征手机210接收到该蓝牙信号的信号强度。可以理解，从发射端(如智能手表220)发送蓝牙寻呼信号，到接收端(如手机210)接收到该蓝牙信号，该蓝牙信号的信号功率会发生衰减。例如，接收端与发射端的距离的远近，会影响蓝牙信号的信号功率的衰减程度。接收端与发射端的距离越大，蓝牙信号的信号功率的衰减越大；接收端与发射端的距离越小，蓝牙信号的信号功率的衰减越小。
需要说明的是，接收端与发射端的距离对蓝牙信号的影响，可以参考上述实施例中接收端与发射端的距离对蓝牙寻呼信号的影响，本申请实施例这里不再赘述。
结合第一种应用场景可知：如果手机210在一段时间(如第一预设时长)内接收到来自智能手表220的蓝牙信号的RSSI均大于预设强度阈值，则用户想要使用手机210为智能手表220无线充电的可能性较高。具体的，本申请实施例的方法还可以包括步骤903。
步骤903、手机210判断接收自智能手表220的蓝牙信号的RSSI是否均大于预设强度阈值。
具体的，如果手机210接收自智能手表220的蓝牙信号的RSSI均大于预设强度阈值，则执行步骤904；如果手机210接收自智能手表220的蓝牙信号的RSSI小于或等于预设强度阈值，则执行步骤902。可选的，如图9B所示，在上述步骤S902之后，本申请实施例的方法可以包括步骤903a，即上述步骤903可以替换为步骤903a。
步骤903a、手机210判断在第一预设时长内接收自智能手表220的蓝牙信号的RSSI是否均大于预设强度阈值。
具体的，如果手机210在第一预设时长内接收自智能手表220的蓝牙信号的RSSI均大于预设强度阈值，则执行步骤904；如果手机210在第一预设时长内接收自智能手表220的任一个蓝牙信号的RSSI小于或等于预设强度阈值，则执行步骤902。
例如，上述第一预设时长可以为2秒(s)，3s或者5s等任一时间长度。需要说明的是，步骤903a可以参考上述步骤403的详细描述，本申请实施例这里不再赘述。
在一些实施例中，在步骤903a之后，如果手机210在第一预设时长内接收自智能手表220的蓝牙信号的RSSI均大于预设强度阈值，手机210可以发出第一提示信息。响应于用户对第一提示信息的第一操作，手机210可以执行步骤904。响应于用户的第二操作，手机210在第四预设时长内可以不再执行步骤903a-步骤904。
需要说明的是，第一提示信息、第一操作和第二操作的详细描述，可以参考上述实施例中的相关介绍，本申请实施例这里不予赘述。
可选的，为了提醒用户及时输入上述第一操作或第二操作，手机210发出第一提示信息的同时，还可以发出第二提示信息。该第二提示信息可以为预设铃音或者振动提示。
在另一些实施例中，如果从发出上述第一提示信息开始，手机210在第五预设时长内未接收到上述第一操作或第二操作，手机210在第四预设时长内可以不再执行步骤903a-步骤904。
步骤904、手机210自动开启反向无线充电功能，为智能手表220无线充电。
其中，手机210可以自动开启反向无线充电功能，依据无线充电协议为智能手表220无线充电。需要说明的是，步骤904可以参考上述步骤404的详细描述，本申请实施例这里不再赘述。
本申请实施例提供一种移动终端的无线充电方法，如果手机210在第一预设时长内接收自智能手表220的蓝牙信号的RSSI均大于预设强度阈值，手机210则可以自动依据无线充电协议为智能手表220无线充电。这样，可以实现移动终端之间的自动无线充电。
其中，手机210依据无线充电协议为智能手表220无线充电的过程中，手机210可以与智能手表220交互，以完成异物检测、线圈位置确认和充电参数协商等。本申请实施例中，可以将上述异物检测、线圈位置确认和充电参数协商称为无线充电的二次确认；将上述蓝牙信号的RSSI判断称为无线充电的一次判断。本申请实施例中，可以通过上述一次判断和二次确认的双重判定，实现移动终端之间的自动无线充电。
在第三种应用场景中，以上述无线信号是NFC探测信号为例，介绍本申请实施例的方法。如图10所示，本申请实施例提供的移动终端的无线充电方法可以包括步骤1001-步骤1003。
步骤1001、手机210周期性发送NFC探测信号。
示例性的，手机210在亮屏场景下，可以按照第一预设周期发送NFC探测信号。例如，亮屏场景可以为手机210显示锁屏界面的场景，手机210显示主界面(即桌面)的场景，或者手机210显示任一应用界面的场景等任一场景。手机210在灭屏场景(即手机210黑屏)下，可以按照第二预设周期发送NFC探测信号。
例如，上述第一预设周期可以为500毫秒(ms)、400ms、600ms或者450ms等任一时间长度。第二预设周期可以为2秒(s)，3s、1s或者1.5s等任一时间长度。
步骤1002、手机210检测上述NFC探测信号的反馈信号。
示例性的，在本申请实施例中，手机210为有源NFC设备，智能手表220为有源NFC设备或者无源NFC设备。其中，有源NFC设备可以激活自身发送信号或者数据给其他NFC设备。无源NFC设备不能激活自身主动发送信号或者数据给其他NFC设备；但是，可以响应有源NFC设备发射的信号产生反馈。
例如，以手机210是有源NFC设备，智能手表220是无源NFC设备为例。可以理解，在手机210与智能手表220足够接近，如手机210与智能手表220之间的距离小于预设距离阈值(如10厘米(cm))的情况下，当手机210发出上述NFC探测信号，被动接受NFC探测信号的智能手表220可以感应该NFC探测信号。在手机210的射频电磁场中，手机210和智能手表220都可以感受到对应的反馈。上述NFC探测信号的反馈信号为手机210检测到信号电平变化。
其中，手机210发送NFC探测信号后，便可以检测NFC探测信号的反馈信号。如果从发送该NFC探测信号开始，第二预设时长内检测到该NFC探测信号的反馈信号，则执行步骤1003。如果从发送该NFC探测信号开始，第二预设时长内未检测到该NFC探测信号的反馈信号，则重新执行步骤1001-步骤1002。
示例性的，在亮屏场景下，第二预设时长可以等于或者小于上述第一预设周期。在灭屏场景下，第二预设时长可以等于或者小于第二预设周期。
在一些实施例中，在步骤1002之后，如果从发送该NFC探测信号开始，第二预设时长内检测到该NFC探测信号的反馈信号，手机210可以发出第一提示信息。响应于用户对第一提示信息的第一操作，手机210可以执行步骤1003。响应于用户的第二操作，手机210在第四预设时长内可以不再执行步骤1001-步骤1003。
需要说明的是，第一提示信息、第一操作和第二操作的详细描述，可以参考上述实施例中的相关介绍，本申请实施例这里不予赘述。
可选的，为了提醒用户及时输入上述第一操作或第二操作，手机210发出第一提示信息的同时，还可以发出第二提示信息。该第二提示信息可以为预设铃音或者振动提示。
在另一些实施例中，如果从发出上述第一提示信息开始，手机210在第五预设时长内未接收到上述第一操作或第二操作，手机210在第四预设时长内可以不再执行步骤1001-步骤1003。
步骤1003、手机210开启反向无线充电功能，为智能手表220无线充电。
其中，手机210可以开启反向无线充电功能，依据无线充电协议为智能手表220无线充电。需要说明的是，步骤1003可以参考上述步骤404的详细描述，本申请实施例这里不再赘述。
本申请实施例提供一种移动终端的无线充电方法，手机210可以周期性发射NFC探测信号；如果在第二预设时长内检测到该NFC探测信号的反馈信号，手机210则可以自动依据无线充电协议为智能手表220无线充电。这样，可以实现移动终端之间的自动无线充电。
其中，手机210依据无线充电协议为智能手表220无线充电的过程中，手机210可以与智能手表220交互，以完成异物检测、线圈位置确认和充电参数协商等。本申请实施例中，可以将上述异物检测、线圈位置确认和充电参数协商称为无线充电的二次确认；将是否接收到NFC探测信号的反馈信号称为无线充电的一次判断。本申请实施例中，可以通过上述一次判断和二次确认的双重判定，实现移动终端之间的自动无线充电。
在第三种场景的第一种情况下，手机210的NFC天线与手机210的无线充电线圈设置在同一位置。在这种情况下，步骤1002之后，如果从手机210发送NFC探测信号开始，第二预设时长内检测到该NFC探测信号的反馈信号，则可以直接执行步骤1003，依据无线充电协议为智能手表220无线充电。
在第三种场景的第二种情况下，手机210的NFC天线与手机210的无线充电线圈设置不在同一位置。在这种情况下，步骤1002之后，如果从手机210发送NFC探测信号开始，第二预设时长内检测到该NFC探测信号的反馈信号，手机210可以发出图11所示的提示信息1101(如第三提示信息)。该第三提示信息用于提示用户将智能手表220放置在手机210的无线充电线圈所在位置处。这样，手机210便可以执行步骤1003，依据无线充电协议为智能手表220无线充电。
需要说明的是，图11仅示出第三提示信息的一种实例。本申请实施例中，手机210发出第三提示信息的具体方式包括但不限于图11所示的方式。手机210发出第三提示信息的其他方式本申请实施例这里不予赘述。
在本申请实施例中，为了实现手机210为智能手表220无线充电，手机210执行步骤404、步骤904和步骤1003时，会周期性发送ping消息，即数字(Digi tal)ping消息。
例如，如图12所示，为通过实验测得的手机210发送的ping消息的波形图。由图12可知：ping消息为周期性脉冲信号。手机210每10s发送一次ping消息，即ping消息的发射周期T为10s。ping消息的信号幅值I(如平均电流)约为30毫安(mA)。每次发送5个ping消息。这5个ping消息耗时90ms，这5个ping消息的周期为1.5赫兹(Hz)。
其中，手机210按照图12所示的参数发射ping消息所需要消耗的能量，换算为手机210的电池的电量消耗，具体为：全天(24小时)累计耗费电量312mA。并且，通过实验测得：采用本申请实施例的方法，从手机210通过无线信号确定为智能手表220无线充电，到手机210执行步骤806为智能手表220无线充电耗时1s。
由上述实验参数可知：通过本申请实施例的方法进行无线充电检测的功耗较低，可以降低进行无线充电检测的功耗。并且，进行无线充电检测的耗时较短，可以提高移动终端之间自动无线充电的效率。
本申请另一些实施例提供了一种移动终端(如图3所示的移动终端300)，该移动终端可以包括：无线充电线圈、无线通信模块、存储器和一个或多个处理器。该无线充电线圈、无线通信模块、存储器与处理器耦合。该存储器用于存储计算机程序代码，该计算机程序代码包括计算机指令。当处理器执行计算机指令时，移动终端可执行上述方法实施例中手机210执行的各个功能或者步骤。该移动终端的结构可以参考图3所示的移动终端300的结构。
本申请实施例还提供一种芯片系统，如图13所示，该芯片系统包括至少一个处理器1301和至少一个接口电路1302。处理器1301和接口电路1302可通过线路互联。例如，接口电路1302可用于从其它装置(例如移动终端的存储器)接收信号。又例如，接口电路1302可用于向其它装置(例如处理器1301)发送信号。示例性的，接口电路1302可读取存储器中存储的指令，并将该指令发送给处理器1301。当所述指令被处理器1301执行时，可使得移动终端(如图3所示的移动终端300)执行上述实施例中的各个步骤。当然，该芯片系统还可以包含其他分立器件，本申请实施例对此不作具体限定。
本申请实施例还提供一种计算机可读存储介质，该计算机可读存储介质包括计算机指令，当所述计算机指令在上述移动终端(如图3所示的移动终端300)上运行时，使得该移动终端执行上述方法实施例中手机执行的各个功能或者步骤。
本申请实施例还提供一种计算机程序产品，当所述计算机程序产品在计算机上运行时，使得所述计算机执行上述方法实施例中手机执行的各个功能或者步骤。
通过以上实施方式的描述，所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将装置的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。
在本申请所提供的几个实施例中，应该理解到，所揭露的装置和方法，可以通过 其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述模块或单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个装置，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是一个物理单元或多个物理单元，即可以位于一个地方，或者也可以分布到多个不同地方。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个可读取存储介质中。基于这样的理解，本申请实施例的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该软件产品存储在一个存储介质中，包括若干指令用以使得一个设备(可以是单片机，芯片等)或处理器(processor)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(read only memory，ROM)、随机存取存储器(random access memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上内容，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何在本申请揭露的技术范围内的变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (25)

  1. 一种移动终端的无线充电方法，其特征在于，应用于第一移动终端，所述第一移动终端具备通过无线充电线圈接收其他设备的无线充电输入的功能和反向无线充电功能；所述反向无线充电功能是所述第一移动终端通过所述无线充电线圈为其他移动终端无线充电的功能，所述方法包括：
    所述第一移动终端检测来自第二移动终端的无线信号，所述无线信号是短距离无线信号；
    如果所述无线信号满足预设条件，所述第一移动终端自动开启所述反向无线充电功能，为所述第二移动终端无线充电。
  2. 根据权利要求1所述的方法，其特征在于，所述无线信号是蓝牙寻呼信号；
    所述第一移动终端检测来自所述第二移动终端的无线信号，包括：
    所述第一移动终端扫描所述蓝牙寻呼信号；
    所述第一移动终端接收到来自所述第二移动终端的蓝牙寻呼信号，检测来自所述第二移动终端的蓝牙寻呼信号的接收信号强度指示RSSI；
    其中，所述无线信号满足预设条件包括：所述第一移动终端接收自所述第二移动终端的蓝牙寻呼信号的RSSI大于预设强度阈值。
  3. 根据权利要求1所述的方法，其特征在于，所述无线信号是所述第一移动终端与所述第二移动终端建立蓝牙连接后，来自所述第二移动终端的蓝牙信号；
    所述第一移动终端检测来自所述第二移动终端的无线信号，包括：
    所述第一移动终端接收来自所述第二移动终端的蓝牙信号，并检测来自所述第二移动终端的蓝牙信号的RSSI；
    其中，所述无线信号满足预设条件包括：所述第一移动终端接收自所述第二移动终端的蓝牙信号的RSSI大于预设强度阈值。
  4. 根据权利要求2或3所述的方法，其特征在于，所述无线信号满足预设条件包括：所述第一移动终端在第一预设时长内、接收自所述第二移动终端的无线信号的RSSI均大于所述预设强度阈值。
  5. 根据权利要求2-4中任一项所述的方法，其特征在于，所述无线信号满足预设条件包括：所述第一移动终端在第一预设时长内、接收自所述第二移动终端的N个无线信号的RSSI均大于所述预设强度阈值；其中，N为预先设定的正整数。
  6. 根据权利要求1所述的方法，其特征在于，所述无线信号是距离无线通信技术NFC探测信号的反馈信号；
    所述第一移动终端检测来自所述第二移动终端的无线信号，包括：
    所述第一移动终端周期性发送所述NFC探测信号，并检测所述NFC探测信号的反馈信号；
    其中，所述无线信号满足预设条件包括：所述第一移动终端在从发送所述NFC探测信号开始的第二预设时长内接收到所述反馈信号。
  7. 根据权利要求6所述的方法，其特征在于，
    所述第一移动终端周期性发送近距离无线通信技术NFC探测信号，包括：
    所述第一移动终端在亮屏场景下，按照第一预设周期周期性发送NFC探测信号；
    所述第一移动终端在灭屏场景下，按照第二预设周期周期性发送NFC探测信号；
    其中，所述第一预设周期小于所述第二预设周期。
  8. 根据权利要求6或7所述的方法，其特征在于，所述第一移动终端的NFC天线与所述无线充电线圈设置在所述第一移动终端的不同位置；
    在所述第一移动终端自动开启所述反向无线充电功能，为所述第二移动终端无线充电之前，所述方法还包括：
    所述第一移动终端发出提示信息，所述提示信息用于提示用户将所述第二移动终端放置在所述无线充电线圈所在位置处。
  9. 根据权利要求1-8中任一项所述的方法，其特征在于，所述第一移动终端自动开启所述反向无线充电功能，为所述第二移动终端无线充电，包括：
    如果所述第一移动终端确定没有金属物体放置在所述无线充电线圈上，所述第一移动终端自动开启所述反向无线充电功能，为所述第二移动终端无线充电。
  10. 根据权利要求1-9中任一项所述的方法，其特征在于，所述第一移动终端自动开启所述反向无线充电功能，为所述第二移动终端无线充电，包括：
    所述第一移动终端通过所述无线充电线圈发射因特网包探测器ping消息；
    如果所述第一移动终端在第三预设时长内通过所述无线充电线圈接收到来自所述第二移动终端的信号强度消息，所述第一移动终端进入标识和配置阶段，以等待接收来自所述第二移动终端的配置消息；所述配置消息用于指示所述第二移动终端进行无线充电所需的最大功率；
    所述第一移动终端通过所述无线充电线圈接收来自所述第二移动终端的所述配置消息，根据所述配置消息配置所述无线充电线圈的输出参数，通过所述无线充电线圈为所述第二移动终端无线充电。
  11. 根据权利要求10所述的方法，其特征在于，在所述第一移动终端进入标识和配置阶段之后，所述方法还包括：
    所述第一移动终端通过所述无线充电线圈接收来自所述第二移动终端的标识ID消息；所述ID消息中包括所述第二移动终端的生产厂商标识VID和产品序列号；
    所述第一移动终端根据所述标识ID消息判断所述第二移动终端是否为预配置的移动终端；
    其中，为所述第二移动终端无线充电，包括：
    如果所述第二移动终端是所述预配置的移动终端，所述第一移动终端通过所述无线充电线圈为所述第二移动终端无线充电。
  12. 一种移动终端，其特征在于，所述移动终端是第一移动终端，所述第一移动终端包括无线充电线圈、无线通信模块、存储器和一个或多个处理器；所述无线充电线圈、所述无线通信模块、所述存储器与所述处理器耦合；其中，所述无线充电线圈用于接收其他设备的无线充电输入，为所述第一移动终端充电；所述无线充电线圈还用于向其他移动终端发射无线充电信号实现所述第一移动终端的反向无线充电功能；
    其中，所述存储器用于存储计算机程序代码，所述计算机程序代码包括计算机指令；当所述计算机指令被所述处理器执行时，使得所述第一移动终端执行以下操作：
    检测来自第二移动终端的无线信号，所述无线信号是短距离无线信号；
    如果所述无线信号满足预设条件，自动开启所述反向无线充电功能，为所述第二移动终端无线充电。
  13. 根据权利要求12所述的移动终端，其特征在于，所述无线通信模块是蓝牙模块，所述无线信号是蓝牙寻呼信号；
    当所述计算机指令被所述处理器执行时，使得所述第一移动终端还执行以下步骤：
    扫描所述蓝牙寻呼信号；
    接收到来自所述第二移动终端的蓝牙寻呼信号，检测来自所述第二移动终端的蓝牙寻呼信号的接收信号强度指示RSSI；
    其中，所述无线信号满足预设条件包括：所述第一移动终端接收自所述第二移动终端的蓝牙寻呼信号的RSSI大于预设强度阈值。
  14. 根据权利要求12所述的移动终端，其特征在于，所述无线通信模块是蓝牙模块；
    当所述计算机指令被所述处理器执行时，使得所述第一移动终端还执行以下步骤：
    与所述第二移动终端建立蓝牙连接；其中，所述无线信号是与所述第二移动终端建立所述蓝牙连接后，接收自所述第二移动终端的蓝牙信号；
    接收来自所述第二移动终端的蓝牙信号，并检测来自所述第二移动终端的蓝牙信号的RSSI；
    其中，所述无线信号满足预设条件包括：所述第一移动终端接收自所述第二移动终端的蓝牙信号的RSSI大于预设强度阈值。
  15. 根据权利要求13或14所述的移动终端，其特征在于，所述无线信号满足预设条件包括：所述第一移动终端在第一预设时长内、接收自所述第二移动终端的无线信号的RSSI均大于所述预设强度阈值。
  16. 根据权利要求13-15中任一项所述的移动终端，其特征在于，所述无线信号满足预设条件包括：所述第一移动终端在第一预设时长内、接收自所述第二移动终端的N个无线信号的RSSI均大于所述预设强度阈值；其中，N为预先设定的正整数。
  17. 根据权利要求12所述的移动终端，其特征在于，所述无线通信模块是距离无线通信技术NFC天线，所述无线信号是NFC探测信号的反馈信号；
    当所述计算机指令被所述处理器执行时，使得所述第一移动终端还执行以下步骤：
    周期性发送所述NFC探测信号，并检测所述NFC探测信号的反馈信号；
    其中，所述无线信号满足预设条件包括：所述第一移动终端在从发送所述NFC探测信号开始的第二预设时长内接收到所述反馈信号。
  18. 根据权利要求17所述的移动终端，其特征在于，
    当所述计算机指令被所述处理器执行时，使得所述第一移动终端还执行以下步骤：
    在亮屏场景下，按照第一预设周期周期性发送NFC探测信号；
    在灭屏场景下，按照第二预设周期周期性发送NFC探测信号；
    其中，所述第一预设周期小于所述第二预设周期。
  19. 根据权利要求17或18所述的移动终端，其特征在于，所述NFC天线与所述无线充电线圈设置在所述第一移动终端的不同位置；
    当所述计算机指令被所述处理器执行时，使得所述第一移动终端还执行以下步骤：
    发出提示信息，所述提示信息用于提示用户将所述第二移动终端放置在所述无线充电线圈所在位置处。
  20. 根据权利要求12-19中任一项所述的移动终端，其特征在于，
    当所述计算机指令被所述处理器执行时，使得所述第一移动终端还执行以下步骤：
    如果确定没有金属物体放置在所述无线充电线圈上，自动开启所述反向无线充电功能，为所述第二移动终端无线充电。
  21. 根据权利要求12-20中任一项所述的移动终端，其特征在于，
    当所述计算机指令被所述处理器执行时，使得所述第一移动终端还执行以下步骤：
    通过所述无线充电线圈发射因特网包探测器ping消息；
    如果在第三预设时长内通过所述无线充电线圈接收到来自所述第二移动终端的信号强度消息，则进入标识和配置阶段，以等待接收来自所述第二移动终端的配置消息；所述配置消息用于指示所述第二移动终端进行无线充电所需的最大功率；
    通过所述无线充电线圈接收来自所述第二移动终端的所述配置消息，根据所述配置消息配置所述无线充电线圈的输出参数，通过所述无线充电线圈为所述第二移动终端无线充电。
  22. 根据权利要求21所述的移动终端，其特征在于，
    当所述计算机指令被所述处理器执行时，使得所述第一移动终端还执行以下步骤：
    在所述标识和配置阶段，通过所述无线充电线圈接收来自所述第二移动终端的标识ID消息；所述ID消息中包括所述第二移动终端的生产厂商标识VID和产品序列号；
    根据所述标识ID消息判断所述第二移动终端是否为预配置的移动终端；
    如果所述第二移动终端是所述预配置的移动终端，通过所述无线充电线圈为所述第二移动终端无线充电。
  23. 一种芯片系统，其特征在于，所述芯片系统应用于包括无线充电线圈、无线通信模块和存储器的移动终端；所述芯片系统包括一个或多个接口电路和一个或多个处理器；所述接口电路和所述处理器通过线路互联；所述接口电路用于从所述存储器接收信号，并向所述处理器发送所述信号，所述信号包括所述存储器中存储的计算机指令；当所述处理器执行所述计算机指令时，所述移动终端执行如权利要求1-11中任一项所述的方法。
  24. 一种计算机可读存储介质，其特征在于，包括计算机指令，当所述计算机指令在移动终端上运行时，使得所述移动终端执行如权利要求1-11中任一项所述的方法。
  25. 一种计算机程序产品，其特征在于，当所述计算机程序产品在计算机上运行时，使得所述计算机执行如权利要求1-11中任一项所述的方法。
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