RU2775835C1 - Method for wireless charging and electronic apparatus - Google Patents

Abstract

FIELD: electrical engineering.

SUBSTANCE: method includes: transmitting a first detection signal by the electronic apparatus when the electronic apparatus is in reverse wireless charging mode; receiving, at the time of the gap between at least two adjacent times of transmission of the first detection signal, a second detection signal transmitted by the wireless charging apparatus, at the electronic apparatus; and, if the second detection signal received by the electronic apparatus satisfies the preset condition, the electronic apparatus automatically switches from the reverse wireless charging mode to the direct wireless charging mode.

EFFECT: wireless charging mode of an electronic apparatus can be switched automatically from the reverse wireless charging mode to the receiving mode so as to adaptively implement wireless charging of the electronic apparatus, increase the reliability of wireless charging, and improve the conditions of wireless charging for the user.

18 cl, 9 dwg

Description

Technical field

[0001] This application relates to the field of wireless charging technologies and, in particular, to a wireless charging method and an electronic device.

State of the art

[0002] With the development of wireless charging technologies, a user can charge an electronic device such as a mobile phone using a wireless charging method. Thus, in the charging process, it is not necessary to take into account the adaptation relationship between the data line and the electronic device and the like, thereby facilitating use by the user.

[0003] For example, the wireless charging technology may include direct wireless charging mode and reverse wireless charging mode.

[0004] For example, when electronic device A wirelessly charges electronic device B, that is, electronic device A outputs a wireless charging current to electronic device B, and electronic device B receives a wireless charging current that is output by electronic device A, electronic device A is in reverse wireless charging mode and electronic device B is in wireless direct charging mode. When electronic device A is placed on the wireless charging cradle, and electronic device A receives the wireless charging current that is output from the wireless charging cradle, electronic device A is in wireless direct charging mode.

[0005] When the electronic device A is in the direct wireless charging mode and receives the charging current that is output by the wireless charging cradle for charging, it is necessary to perform a manual setting to switch the electronic device A from the direct wireless charging mode to the reverse wireless charging mode, so that electronic device A may be outputting wireless charging current to electronic device B. Similarly, when electronic device A is in reverse wireless charging mode and outputs charging current to charge electronic device B, manual adjustment must be performed to switch electronic device A out of reverse wireless charging mode to wireless direct charging mode so that the wireless charging cradle can wirelessly charge electronic device A. When electronic device A is in reverse wireless charging mode, if electronic device A is not switched from reverse wireless charging mode to direct wireless charging mode by manual setting when electronic device A is placed on the wireless charging stand, electronic device A may still be in reverse wireless charging mode. Therefore, the electronic device A cannot receive the charging current that is output by the wireless charging cradle and cannot be charged, and the electronic device A can be mistakenly considered to be defective, thereby affecting the user's wireless charging experience.

The essence of the invention

[0006] Some embodiments of this application provide a wireless charging method and an electronic device, so that the wireless charging mode of the electronic device can be switched automatically to improve wireless charging reliability and improve the user's wireless charging experience.

[0007] To achieve the above objective, this application provides the following technical solutions:

[0008] According to a first aspect, a wireless charging method is provided, which includes: transmitting by an electronic device a first detection signal when the electronic device is in a reverse wireless charging mode, and receiving at a time between at least two adjacent times at which the first is transmitted. detection signal, the second detection signal is transmitted by the wireless charging device; and then, if the second detection signal received by the electronic device satisfies the predetermined condition, automatically switching the electronic device from the reverse wireless charging mode to the direct wireless charging mode.

[0009] According to the wireless charging method provided in this embodiment of this application, even if the electronic device is in the reverse wireless charging mode, the electronic device can receive at a time interval between the times at which the electronic device transmits the first detection signal, the second detection signal, transmitted by the wireless charging device, and when the second detection signal received by the electronic device satisfies the preset condition, the electronic device can automatically switch from the reverse wireless charging mode to the forward wireless charging mode, so that when the electronic device is in the reverse wireless charging mode, wireless charging of the electronic device is performed automatically without manual operation to improve wireless charging reliability and user convenience.

[0010] In an actual application, for cost reasons, an electronic device is typically provided with only one set of charging apparatuses, such as a charging circuit including a charging coil. In particular, at the same time, the charging equipment can only work in the direct wireless charging mode (also called the wireless charging input mode or the receiving mode. In particular, the charging equipment charges the electronic device) or the reverse wireless charging mode (also called the output mode). wireless charging or transfer mode.Specifically, an electronic device serves as a power supply side for charging another electronic device).

[0011] For example, the transmission frequency of the first acquisition signal is the first transmission frequency, and the transmission frequency of the second acquisition signal is the second transmission frequency. In an exemplary embodiment, the first transmission frequency is different from the second transmission frequency, and the first transmission frequency is not an integer multiple of the second transmission frequency. Thus, there is definitely a case where the charging apparatus of the electronic device is in standby mode (not transmitting the first detection signal) when the wireless charging device transmits the second detection signal. Therefore, the electronic device can receive, at a time interval between the times at which the electronic device transmits the first acquisition signal, the second acquisition signal transmitted by the wireless charging device.

[0012] In an exemplary embodiment, the predetermined condition may include at least one of the following: the voltage of the second detection signal received by the electronic device is greater than the first voltage threshold; the current of the second detection signal received by the electronic device is greater than the first current threshold; or the power of the second detection signal received by the electronic device is greater than the first power threshold.

[0013] It should be noted that the first voltage threshold, the first current threshold, and the first power threshold may be preset based on actual wireless charging requirements such as battery capacity or charging power. Details are not described in this application.

[0014] In order to improve the accuracy of the predetermined condition determination result and avoid misdetermination, the least number of times the predetermined condition is met at the predetermined time may be further limited. Therefore, in another possible manner of execution, the preset condition may alternatively include at least one of the following: the number of times that the voltage of the second detection signal received by the electronic device at the preset time exceeds the first voltage threshold value is greater than the threshold value of the first number of times; the number of times when the current of the second detection signal received by the electronic device at a predetermined time exceeds the first current threshold value is greater than the threshold value of the second number of times; or the number of times that the power of the second detection signal received by the electronic device at a predetermined time exceeds the first power threshold is greater than the threshold of a third number of times.

[0015] It should be noted that the preset time, the first threshold number of times, the second threshold number of times, and the third threshold number of times can be preset based on actual wireless charging requirements such as battery capacity or charging power. Details are not described in this application.

[0016] In an exemplary embodiment, if the second discovery signal received by the electronic device satisfies a predetermined condition, the wireless charging method may further include: transmitting a response signal to the wireless charging device by the electronic device; and, accordingly, the reception by the wireless charging device of the response signal transmitted by the electronic device. The response signal carries indication information, and the indication information is used to indicate that the second acquisition signal received by the electronic device satisfies a predetermined condition.

[0017] Optionally, after the wireless charger receives the response transmitted by the electronic device, the wireless charger may start charging the electronic device. For example, the wireless charging method may further include: transmitting, by the wireless charger, a charging signal to the electronic device; and receiving by the electronic device the charging signal transmitted by the wireless charging device.

[0018] Optionally, the transmission power of the charging signal is greater than the transmission power of the second detection signal; and/or the charging signal transmission frequency is greater than the second transmission frequency.

[0019] According to a second aspect, an electronic device is provided that includes a transmitting module, a receiving module, and a processing module. The transmitter module is configured to transmit the first detection signal when the electronic device is in reverse wireless charging mode. The receiving module is configured to receive, at a time interval between at least two adjacent times at which the first acquisition signal is transmitted, a second acquisition signal transmitted by the wireless charging device. The processing module is configured to: if the second detection signal received by the receiving module satisfies a predetermined condition, automatically switch the electronic device from reverse wireless charging mode to direct wireless charging mode.

[0020] For example, the transmission frequency of the first acquisition signal is the first transmission frequency, and the transmission frequency of the second acquisition signal is the second transmission frequency. In an exemplary embodiment, the first transmission frequency is different from the second transmission frequency, and the first transmission frequency is not an integer multiple of the second transmission frequency.

[0021] In an exemplary embodiment, the predetermined condition includes at least one of the following: the voltage of the second detection signal received by the electronic device is greater than the first voltage threshold; the current of the second detection signal received by the electronic device is greater than the first current threshold; or the power of the second detection signal received by the electronic device exceeds the first power threshold.

[0022] In another possible embodiment, the preset condition includes at least one of the following: the number of times that the voltage of the second detection signal received by the electronic device at the preset time exceeds the first voltage threshold value is greater than the threshold value of the first number of times ; the number of times when the current of the second detection signal received by the electronic device at a predetermined time exceeds the first current threshold value is greater than the threshold value of the second number of times; or the number of times that the power of the second detection signal received by the electronic device at a predetermined time exceeds the first power threshold is greater than the threshold of a third number of times.

[0023] In an exemplary embodiment, the transmitter module is further configured to transmit a response signal to the wireless charger. The response signal carries indication information, and the indication information is used to indicate that the second acquisition signal received by the electronic device satisfies a predetermined condition.

[0024] Optionally, the receiving module is further configured to: after the transmitting module transmits a response signal to the wireless charger, receive a charging signal transmitted by the wireless charger. Optionally, the transmission power of the charging signal is greater than the transmission power of the second detection signal; and/or the charging signal transmission frequency is greater than the second transmission frequency.

[0025] According to a third aspect, a chip is provided that includes a processor and a communication interface. The processor is configured to: read and execute a computer program stored in the memory to implement the wireless charging method according to any of the first aspect and implementations of the first aspect.

[0026] According to a fourth aspect, an electronic device is provided that includes a processor, a transceiver, and a memory. The memory is configured to store one or more programs, the one or more programs including a computer executable instruction, and when the electronic device is operated, the processor executes the computer executable instruction stored in the memory such that the electronic device controls the transceiver to perform the wireless method. charging according to any of the first aspect and implementations of the first aspect.

[0027] According to a fifth aspect, a computer-readable storage medium is provided in which computer instructions are stored. When the computer instruction is run on the computer, the computer program is enabled to perform the wireless charging method according to any one of claims 1 to 7.

[0028] According to a sixth aspect, a computer program product is provided that includes a computer program code. When the computer program code is run on the computer, the computer is enabled to perform the wireless charging method according to any of the first aspect and implementations of the first aspect.

[0029] According to a seventh aspect, a wireless charging system is provided and includes a wireless charging device and an electronic device according to any one of the second aspect and implementations of the second aspect, or an electronic device according to any one of the fourth aspect and implementations of the fourth aspect.

[0030] In this application, the names of blocks and modules in an electronic device are not a limitation for the device. In the actual implementation, these blocks and modules may have other names, provided that the functions of the modules of the blocks are similar to those in the embodiments of this application, that is, the blocks and modules fall within the protection scope of the claims of this application.

BRIEF DESCRIPTION OF THE DRAWINGS

[0031] FIG. 1A is a schematic structural diagram 1 of a wireless charging system according to an embodiment of this application;

[0032] FIG. 1B is a schematic structural diagram 2 of a wireless charging system according to an embodiment of this application;

[0033] FIG. 2A is a schematic diagram of a hardware structure of an electronic device according to an embodiment of this application;

[0034] FIG. 2B is a schematic diagram of the software structure of an electronic device according to an embodiment of this application;

[0035] FIG. 3 is a schematic flowchart of a wireless charging method according to an embodiment of this application;

[0036] FIG. 4 is a schematic diagram of a time sequence relationship between a second acquisition signal transmitted by a wireless charging device and a first acquisition signal transmitted by an electronic device according to an embodiment of this application;

[0037] FIG. 5 is a schematic structural diagram of a wireless charging circuit according to an embodiment of this application;

[0038] FIG. 6 is a schematic structural diagram 1 of an electronic device according to an embodiment of this application; and

[0039] FIG. 7 is a schematic structural diagram 2 of an electronic device according to an embodiment of this application.

Description of Embodiments

[0040] The following describes in detail, with reference to the accompanying drawings, a wireless charging method and an electronic device that are provided in some embodiments of this application.

[0041] The wireless charging method provided in the embodiments of this application can be applied to the wireless charging system shown in FIG. 1A.

[0042] As shown in FIG. 1A, the wireless charging system may include a first electronic device 101 and a wireless charging device 102. The wireless charging device 102 is mainly configured to wirelessly charge the first electronic device 101.

[0043] For example, when the wireless charger 102, such as the wireless charging base, detects that the first electronic device 101 to be charged is placed on the charging panel of the wireless charger 102, the wireless charger 102 transmits a charging signal to the first electronic device 101 to wireless charging of the first electronic device 101.

[0044] The wireless charging device 102 can detect the first electronic device 101 by transmitting a discovery signal and receiving a response signal for the discovery signal. For example, the wireless charger 102 transmits a discovery signal. When the wireless charging device 102 receives the response signal sent by the first electronic device 101 in response to the detection signal, the wireless charging device 102 can determine that the first electronic device 101 has been detected. The wireless charging device 102 can then transmit a charging signal to wirelessly charge the first electronic device 101.

[0045] A detection signal is a wireless signal that is periodically sent by the wireless charging base's transmitting coil at a specific time interval or periodically sent according to a specific rule, and is used to detect whether there is an electronic device nearby that needs to be charged.

[0046] Accordingly, the response signal is a signal sent by the first electronic device 101 to the wireless charging device 102 after the first electronic device 101 receives the detection signal. For example, when the strength such as current, voltage, or strength of the detection signal received by the first electronic device 101 exceeds a predetermined strength threshold, the first electronic device 101 and the wireless charging device 102 are deemed to meet the wireless charging condition. For example, the first electronic device 101 and the wireless charger 102 are in an "alignment" state. "Alignment" means that the distance between the receiving coil of the first electronic device 101 and the transmitting coil of the wireless charger 102 is smaller than the preset distance. Accordingly, "deviation" means that the distance between the receiving coil of the first electronic device 101 and the transmitting coil of the wireless charging device 102 is larger than the preset distance.

[0047] In the wireless charging system shown in FIG. 1A, the wireless charger 102 is a power supply side and operates in a reverse wireless charging mode (also called a wireless charging transfer mode or a wireless charging output mode). Accordingly, the first electronic device 101 is a receiver and operates in a direct wireless charging mode (also called a wireless charging receiving mode or a wireless charging input mode).

[0048] In an actual application, the first electronic device 101 may alternatively serve as a power supply side for wirelessly charging another electronic device.

[0049] FIG. 1B is another schematic diagram of a scenario of a wireless charging system to which the first electronic device 101 is applicable, according to an embodiment of this application. As shown in FIG. 1B, the first electronic device 101 serves as a power supply side for wireless charging of the second electronic device 103, such as a smart watch.

[0050] In the wireless charging system shown in FIG. 1B, the first electronic device 101 is configured to transmit a discovery signal; the second electronic device 103 is configured to: receive an acquisition signal and send a response signal for the acquisition signal; the first electronic device 101 receives a response signal sent by the second electronic device 103 in response to the discovery signal; the first electronic device 101 transmits a charging signal to the second electronic device 103; and the second electronic device 103 receives the charging signal transmitted from the first electronic device 101.

[0051] For example, the first electronic device 101 may be an electronic device that supports a wireless charging function and a wireless discharging function, such as a tablet computer (Pad), a laptop, a smartphone, a virtual reality (VR) device, an augmented reality (augmented reality, AR), in-vehicle device or smart wearable device.

[0052] It should be noted that the first electronic device 101 operates in the direct wireless charging mode in the wireless charging scenario shown in FIG. 1A and operates in reverse wireless charging mode in the wireless charging scenario shown in FIG. 1b. When the first electronic device 101 switches between the wireless charging scenario shown in FIG. 1A and the wireless charging scenario shown in FIG. 1B, the wireless charging mode of the first electronic device 101 usually needs to be switched manually, and operations are relatively cumbersome. If the first electronic device 101 in the reverse wireless charging mode is placed on the charging panel of the wireless charger 102, the first electronic device 101 is still in the reverse wireless charging mode, and the first electronic device 101 does not receive the detection signal transmitted by the wireless charger 102. Therefore, a normal wireless charging connection cannot be established and the first electronic device 101 cannot be wirelessly charged.

[0053] FIG. 2A is a schematic diagram of the hardware structure of the electronic device 101.

[0054] The electronic device 101 may include a processor 210, an external memory interface 220, an internal memory 221, a universal serial bus (USB) interface 230, a charge management module 240, a power management module 241, a battery 242, an antenna 1 , antenna 2, mobile module 250, wireless module 260, audio module 270, speaker 270A, receiver 270B, microphone 270C, headset jack 270D, sensor module 280, key 290, motor 291, indicator 292, camera 293, display 294, a subscriber identification module (SIM) card interface 295, and the like. The sensor module 280 may include a pressure sensor 280A, a gyro sensor 280B, a barometric pressure sensor 280C, a magnetic sensor 280D, an acceleration sensor 280E, a range sensor 280F, an optical proximity sensor 280G, a fingerprint sensor 280H, a temperature sensor 280J sensor, a touch sensor 280K , ambient light sensor 280L, bone conduction sensor 280M, and the like.

[0055] It can be understood that the structure illustrated in this embodiment of this application is not a specific limitation for the electronic device 101. In some other embodiments of this application, the electronic device 101 may include more or fewer components than shown in the drawing. , or combine some components, or separate some components, or have a different arrangement of components. The components in a drawing may be implemented in hardware, software, or a combination of software and hardware.

[0056] Processor 210 may include one or more processors. For example, processor 210 may include an application processor (AP), a modem processor, a graphics processing unit (GPU), an image signal processor (ISP), a controller, a memory, a video codec, a digital signals (digital signal processor, DSP), baseband processor and / or neural network processing unit (neural-network processing unit, NPU). The various processing units may be independent devices or may be integrated into one or more processors.

[0057] The controller may generate an operation control signal based on the instruction opcode and the time sequence signal to complete control of reading instructions and executing instructions.

[0058] The memory may be further located in the processor 210 and configured to store instructions and data. In some embodiments, the memory in processor 210 is a cache. The memory may hold an instruction or data that is simply used or cycled by the processor 210. If the processor 210 needs to reuse the instruction or data, the processor 210 may directly recall the instruction or data from memory to avoid re-access and reduce the processor 210's latency. increases the efficiency of the system.

[0059] In some embodiments, processor 210 may include one or more interfaces. The interface may include an inter-integrated circuit (I2C) interface, an inter-integrated circuit sound (I2S) interface, a pulse code modulation (PCM) interface, a universal asynchronous receiver/transmitter interface (universal asynchronous receiver/transmitter, UART), mobile industry processor interface (MIPI), general-purpose input/output (GPIO), subscriber identity module (SIM) interface ), a universal serial bus (USB) interface, and/or the like.

[0060] The I2C interface is a serial bus with two-way synchronization and includes a serial data line (serial data line, SDA) and a serial clock line (derail clock line, SCL). In some embodiments, processor 210 may include multiple I2C bus groups. The processor 210 may be separately connected to the touch sensor 280K, charger, flash, camera 293, or the like. using various I2C bus interfaces. For example, processor 210 may be coupled to touch sensor 280K using an I2C interface such that processor 210 communicates with touch sensor 280K using an I2C bus interface to implement the touch function of electronic device 101.

[0061] The I2S interface may be used for audio communication. In some embodiments, processor 210 may include multiple I2S bus groups. The processor 210 may be coupled to the audio module 270 using the I2S bus to enable communication between the processor 210 and the audio module 270. In some embodiments, the audio module 270 may transmit an audio signal to the wireless module 260 using the I2S interface to implement a headset call answering feature. bluetooth.

[0062] The PCM interface can also be used for audio communication and analog signal sampling, quantization, and coding. In some embodiments, the audio module 270 may be connected to the wireless module 260 via a PCM bus interface. In some embodiments, the audio module 270 may alternatively transmit an audio signal to the wireless communication module 260 using the PCM interface to implement call answering functionality using a Bluetooth headset. Both the I2S interface and the PCM interface can be used for audio communication.

[0063] The UART interface is a universal serial data bus that is used for asynchronous communication. The bus may be a talkback bus. The bus converts between serial and parallel data to be transferred. In some embodiments, the implementation of the UART interface is typically configured to connect the processor 210 and the wireless module 260. For example, the processor 210 communicates with the Bluetooth module in the wireless module 260 via the UART interface to implement the Bluetooth function. In some embodiments, the audio module 270 may send an audio signal to the wireless communication module 260 via a UART interface to enable music playback via a Bluetooth headset.

[0064] MIPI can be configured to connect the processor 210 and a peripheral component such as a display 294 or a camera 293. MIPI includes a camera serial interface (CSI), a display serial interface (DSI), etc. .P. In some embodiments, the processor 210 communicates with the camera 293 via the CSI to implement the photographing function of the electronic device 101. The processor 210 communicates with the display 294 via the DSI to implement the display function of the electronic device 101.

[0065] The GPIO interface can be configured using software. The GPIO interface can be configured as a control signal or can be configured as a data signal. In some embodiments, the GPIO interface may be configured to connect processor 210 and camera 293, display 294, wireless module 260, audio module 270, sensor module 280, and the like. Alternatively, the GPIO interface can be configured as an I2C interface, an I2S interface, a UART interface, MIPI, or the like.

[0066] The USB interface 230 is an interface that conforms to the specification of the USB standard, and may be a mini USB interface, a micro USB interface, a USB Type-C interface, or the like, in particular. The USB interface 230 may be configured to connect to a charger to charge the electronic device 101, or may be configured to perform data transfer between the electronic device 101 and a peripheral device, or may be configured to connect to a headset to play audio with the headset. Alternatively, the interface may be configured to connect to another electronic device such as an AR device.

[0067] It can be understood that the interface connection relationship between the modules illustrated in this embodiment of this application is merely an example for description and does not constitute a limitation on the structure of the electronic device 101. In some other embodiments of this application, the electronic device 101 may alternatively use the method connecting an interface other than that in the previous embodiment, or use a combination of a plurality of interface connection methods.

[0068] The charging management module 240 is configured to receive a charging input from a charger. The charger can be a wireless charger or a wired charger. In some wired charging embodiments, charge management module 240 may receive charging input from a wired charger using USB interface 230. In some wireless charging embodiments, charge management module 240 may receive wireless charging input using the wireless charging coil of electronic device 101.

[0069] For example, in this embodiment of this application, the charge management module 240 of the electronic device 101 in FIG. 1A can receive wireless charging input using the wireless charging coil of the electronic device 101 to wirelessly charge the electronic device 101.

[0070] It can be understood that when the battery 242 is being charged, the charging management module 240 may additionally supply power to another component, such as a processor or a screen of the electronic device 101, using the power management module 241 .

[0071] Power management module 241 is configured to connect battery 242, charge management module 240, and processor 210. Power management module 241 receives input from battery 242 and/or charge management module 240 and supplies power to processor 210, internal memory 221, external memory, display 294, camera 293, wireless module 260, and the like. The power management module 241 can be further configured to monitor parameters such as battery capacity, battery cycle counter, and battery health status (current leakage or impedance). In some other embodiments, power management module 241 may alternatively be located in processor 210. In some other embodiments, power management module 241 and charge management module 240 may alternatively be located in the same device.

[0072] The wireless communication function of the electronic device 101 can be implemented using antenna 1, antenna 2, mobile communication module 250, wireless communication module 260, modem processor, baseband processor, and the like.

[0073] Antenna 1 and antenna 2 are configured to transmit and receive an electromagnetic wave signal. Each antenna in electronic device 101 may be configured to cover one communication band or multiple communication bands. Various antennas can be further multiplexed to improve antenna utilization. For example, antenna 1 may be multiplexed as antenna diversity in a wireless local area network. In some other embodiments, the antenna may be used in conjunction with a tuning switch.

[0074] The mobile communication module 250 may provide a wireless communication solution that includes 2G/3G/4G/5G or the like, and which is applied to the electronic device 101. The mobile communication module 250 may include at least one filter, switch , power amplifier, low noise amplifier (LNA), etc. The mobile communication unit 250 may receive the electromagnetic wave with the antenna 1, perform processing such as filtering or amplifying the received electromagnetic wave, and transmit the electromagnetic wave to the modem processor for demodulation. The mobile communication module 250 may further amplify the signal modulated by the modem processor and convert the signal into an electromagnetic wave for radiation using the antenna 1. In some embodiments, at least some of the functional modules in the mobile communication module 250 may be located in the processor 210. In some embodiments, at least some of the functional modules in the mobile communication module 250 may be located in the same device as at least some of the modules in the processor 210.

[0075] The modem processor may include a modulator and a demodulator. The modulator is configured to modulate the low frequency baseband signal to be sent into a medium and high frequency signal. The demodulator is configured to demodulate the received electromagnetic wave signal into a low frequency baseband signal. Then, the demodulator transmits the low frequency baseband signal obtained by demodulation to the baseband processor for processing. The low frequency baseband signal is processed by the baseband processor and then transmitted to the application processor. The application processor outputs an audio signal using an audio device (not limited to speaker 270A, receiver 270B, etc.) or displays an image or video using display 294. In some embodiments, the modem processor may be an independent device. In some other embodiments, the modem processor may be independent of the processor 210 and located on the same device as the mobile communication module 250 or other functional module.

[0076] The wireless communication module 260 can provide a wireless communication solution that includes wireless local area networks (WLAN) (e.g., Wireless Fidelity, Wi-Fi), Bluetooth (Bluetooth, BT) , global navigation satellite system (GNSS), frequency modulation (FM), near field communication technology (ear field communication, NFC), infrared technology (infrared, IR), etc., which is applied to electronic device 101. Wireless communication module 260 may be one or more devices incorporating at least one communication processing module. The wireless communication module 260 receives the electromagnetic wave with the antenna 2, performs frequency modulation and filtering of the electromagnetic wave signal, and sends the processed signal to the processor 210. The wireless communication module 260 may further receive the signal to be sent from the processor 210, perform frequency modulation and amplification signal and convert the signal into an electromagnetic wave for radiation using antenna 2.

[0077] In some embodiments, antenna 1 and mobile communication module 250 in electronic device 101 are connected, and antenna 2 and wireless communication module 260 in electronic device 101 are connected so that electronic device 101 can communicate with a network and another device using technology wireless connection. Wireless technology may include global system for mobile communications (GSM), general packet radio service (GPRS), code division multiple access (CDMA), broadband access . wideband code division multiple access (WCDMA), time-division code division multiple access (TD-SCDMA), long-term evolution (LTE), BT, GNSS, WLAN, NFC, FM, IR and/or the like. GNSS can include a global positioning system (global positioning system, GPS), a global navigation satellite system (global navigation satellite system, GLONASS), a BeiDou navigation satellite system (BDS), a quasi-zenith satellite system (quasi-zenith satellite system, QZSS)) and/or satellite based augmentation systems (SBAS).

[0078] The electronic device 101 implements a display function using a graphics processor, a display 294, an application processor, or the like. The graphics processor is an image processing microprocessor connected to the display 294 and the application processor. The graphics processor is configured to perform mathematical and geometric calculations and is configured to render an image. The processor 210 may include one or more graphics processors that execute a software instruction to generate or modify display information.

[0079] The display 294 is configured to display an image, video, or the like. The display 294 includes a display panel. The display panel can use a liquid crystal display (LCD), an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode, or an active-matrix organic light-emitting diode (AMOLED). ), flexible light emitting diode (FLED), mini LED, micro LED, micro OLED, quantum dot light emitting diode (QLED) or the like. In some embodiments, electronic device 101 may include one or N displays 294, where N is a positive integer greater than 1.

[0080] The electronic device 101 may implement a photographing function using an ISP, a camera 293, a video codec, a graphics processor, a display 294, an application processor, and the like.

[0081] The ISP is configured to process the data returned by the camera 293. For example, during photography, the shutter is opened, a beam of light is transmitted to the camera photosensitive element through the lenses, the optical signal is converted to an electrical signal, the camera photosensitive element transmits the electrical signal to the ISP for processing, and the electrical signal is converted into an image that can be seen. The ISP can further optimize the algorithm for noise, brightness, and image appearance. The ISP can further optimize parameters such as exposure and color temperature of the photographic scenario. In some embodiments, the ISP may be located in chamber 293.

[0082] The camera 293 is configured to capture a still image or video. An optical image of an object is generated by a lens and projected onto a photosensitive element. The photosensitive element may be a charge coupled device (CCD) or a complementary metal oxide semiconductor (complementary metal oxide semiconductor, CMOS). The photosensitive element converts the optical signal into an electrical signal, and then transmits the electrical signal to the ISP to convert the electrical signal into a digital image signal. The ISP outputs the digital image signal to the DSP for processing. The DSP converts the digital image signal into a standard image signal in a format such as RGB or YUV. In some embodiments, the electronic device 101 may include one or N cameras 293, where N is a positive integer greater than 1.

[0083] A digital signal processor is configured to process a digital signal. In addition to the digital image signal, the digital signal processor may further process another digital signal. For example, when the electronic device 101 selects a frequency, the digital signal processor is configured to perform a Fourier transform on frequency energy, or the like.

[0084] The video codec is configured to compress or decompress digital video. Electronic device 101 may support one or more video codecs. Thus, the electronic device 101 can play back or record video in a variety of coding formats, such as moving picture experts group (MPEG)-1, MPEG-2, MPEG-3, and MPEG-4.

[0085] The NPU is a neural-network (NN) computing processor that quickly processes input information by referring to the structure of a biological neural network, such as referring to a transmission mode between human brain neurons, and can further continuously perform self-learning. The NPU can implement applications such as intelligent recognition of the electronic device 101, such as image recognition, face recognition, speech recognition, and text understanding.

[0086] The external memory interface 220 may be configured to connect to an external memory card, such as a micro SD card, to expand the storage capabilities of the electronic device 101. The external memory card communicates with the processor 210 via the external memory interface 220 to implement the storage function data, such as saving files such as music and videos on an external memory card.

[0087] The internal memory 221 may be configured to store a computer-executable program code, and the computer-executable program code includes an instruction. The processor 210 performs various functional applications of the electronic device 101 and data processing by executing an instruction stored in the internal memory 221. The internal memory 221 may include a program storage area and a data storage area. The program storage area may store an operating system, an application program required by at least one function (eg, a sound reproduction function or a picture reproduction function), and the like. The data storage area may store data (for example, audio data or an address book) created during use of the electronic device 101, or the like. In addition, internal memory 221 may include high-speed random access memory and may further include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or universal flash storage (UFS). ).

[0088] The electronic device 101 can realize an audio function such as playing or recording music using an audio module 270, a speaker 270A, a receiver 270B, a microphone 270C, a headset jack 270D, an application processor, and the like.

[0089] The audio module 270 is configured to convert digital audio information to an analog audio signal for output, and is also configured to convert an analog audio input to a digital audio signal. The audio module 270 may be further configured to encode and decode the audio signal. In some embodiments, audio module 270 may be located in processor 210, or some functional modules in audio module 270 may be located in processor 210.

[0090] A speaker 270A, also referred to as a "loudspeaker", is configured to convert an electrical audio signal into an audio signal. The electronic device 101 can listen to music or answer a call hands-free using the speaker 270A.

[0091] Receiver 270B, also referred to as a "receiver", is configured to convert an electrical audio signal into an audio signal. When the electronic device 101 answers a call or receives voice information, the receiver 270B can be placed close to the human ear to listen to the voice.

[0092] The microphone 270C, also referred to as a "microphone" or "microphone", is configured to convert an audio signal into an electrical signal. When making a call or sending voice information, the user can make a sound by bringing the person's mouth close to the microphone 270C to input an audio signal into the microphone 270C. At least one microphone 270C may be located in the electronic device 101. In some other embodiments, two microphones 270C may be located in the electronic device 101 to collect the audio signal and further implement the noise reduction function. In some other embodiments, the electronic device 101 may alternatively have three, four, or more microphones 270C for audio collection, noise reduction, audio source identification, directional recording, and the like.

[0093] The headset connector 270D is configured to connect to a wired headset. The headset jack 270D may be a USB 230 interface, or may be a 3.5 mm open mobile terminal platform (OMTP) interface or a cellular telecommunications industry association of the USA, CTIA).

[0094] The pressure sensor 280A is configured to sense a pressure signal and can convert the pressure signal into an electrical signal. In some embodiments, the pressure sensor 280A may be located on the display 294. There are many types of pressure sensors 280A, such as a resistive pressure sensor, an inductive pressure sensor, and a capacitive pressure sensor. The capacitive pressure sensor may be a parallel plate containing at least two conductive materials. The capacitance between the electrodes changes when a force is applied to the pressure sensor 280A. The electronic device 101 detects the pressure intensity based on the capacitance change. When a touch operation is performed on the display 294, the electronic device 101 detects the intensity of the touch operation based on the pressure sensor 280A. The electronic device 101 may also calculate the touch position based on the detection signal of the pressure sensor 280A. In some embodiments, touch operations that apply to the same touch position but have different intensity of touch operations may correspond to different operating instructions. For example, when a touch operation whose intensity is less than the first pressure threshold is performed on the application icon of the SMS message, an instruction to view the SMS message is executed. When a touch operation whose intensity of the touch operation is greater than or equal to the first pressure threshold value is performed on the application icon of the SMS message, an instruction for creating an SMS message is executed.

[0095] The gyro sensor 280B may be configured to determine the movement position of the electronic device 101. In some embodiments, the angular velocity of the electronic device 101 about three axes (namely the x, y, and z axes) may be determined using the gyro sensor 280B. The 280B gyro sensor can be used to stabilize the image while taking photos. For example, when the shutter is open, the gyro sensor 280B detects the angle at which the electronic device 101 oscillates, calculates the distance that the lens module must compensate for based on the angle, and allows the lens to compensate for the wobble of the electronic device 101 by reverse movement to realize image stabilization. . The gyro sensor 280B can also be used in navigation and somatic game scenarios.

[0096] The atmospheric pressure sensor 280C is designed to measure atmospheric pressure. In some embodiments, the electronic device 101 calculates the altitude using the atmospheric pressure value measured by the atmospheric pressure sensor 280C to facilitate positioning and navigation.

[0097] The magnetic sensor 280D includes a Hall effect sensor. The electronic device 101 can detect the opening and closing of the flip leather case using the magnetic sensor 280D. In some embodiments, when the electronic device 101 is a flip phone, the electronic device 101 may detect the opening and closing of the flip cover based on the magnetic sensor 280D. In addition, a function such as automatic release of the flip cover is set based on the detected open or close state of the leather case or the detected open or close state of the flip cover.

[0098] The acceleration sensor 280E can detect the amount of acceleration of the electronic device 101 in all directions (typically three axes), can detect the amount and direction of gravity when the electronic device 101 is static, and can be further configured to recognize the position of the electronic device and apply to application, such as switching between landscape mode and portrait mode, or a foot pod.

[0099] The range sensor 280F is configured to measure distance. The electronic device 101 can measure distance using infrared or laser. In some embodiments, in a photography scenario, the electronic device 101 may perform a range measurement using the range sensor 280F to implement fast focusing.

[0100] For example, the optical proximity sensor 280G may include a light emitting diode (LED) and an optical detector such as a photodiode. The light emitting diode may be an infrared light emitting diode. The electronic device 101 emits infrared light using an LED. The electronic device 101 detects infrared light reflected from a nearby object using a photodiode. When sufficient reflected light is detected, the electronic device 101 can determine that there is an object near the electronic device 101. When insufficient reflected light is detected, the electronic device 101 may determine that there is no object near the electronic device 101. The electronic device 101 can detect with the optical proximity sensor 280G that the user holds the electronic device 101 close to the ear to make a call to automatically turn off the screen to save power. The 280G optical proximity sensor can also be used in leather case mode or pocket mode to automatically unlock or lock the screen.

[0101] The ambient light sensor 280L is configured to sense the brightness of the ambient light. The electronic device 101 may adaptively adjust the brightness of the display 294 based on the sensed ambient light brightness. The ambient light sensor 280L can also be configured to automatically adjust the white balance during photography. The ambient light sensor 280L can also cooperate with the optical proximity sensor 280G to detect whether the electronic device 101 is in the pocket to prevent accidental touching.

[0102] The fingerprint sensor 280H is configured to collect a fingerprint. The electronic device 101 can use the collected fingerprint function to realize fingerprint-based unlocking, application lock access, fingerprint-based photography, fingerprint-based call answering, and the like.

[0103] The temperature sensor 280J is configured to detect temperature. In some embodiments, the electronic device 101 executes the temperature processing policy using the temperature detected by the temperature sensor 280J. For example, when the temperature reported by the temperature sensor 280J exceeds a threshold, the electronic device 101 reduces the performance of the processor located near the temperature sensor 280J to reduce power consumption to implement thermal protection. In some other embodiments, when the temperature is below another threshold, the electronic device 101 heats the battery 242 to avoid the case where the electronic device 101 shuts down abnormally due to low temperature. In some other embodiments, when the temperature is below another threshold, the electronic device 101 raises the output voltage of the battery 242 to avoid abnormal low temperature shutdown.

[0104] The touch sensor 280K is also referred to as a "touch panel". The touch sensor 280K may be located on the display 294. The touch sensor 280K and the display 294 form a touch screen, which is also referred to as a "touch screen". The touch sensor 280K is configured to detect a touch operation performed on or near the touch sensor 280K. The touch sensor may communicate the detected touch operation to the application processor to determine the type of touch event. The visual output associated with the touch control may be provided by the display 294. In some other embodiments, the touch sensor 280K may also be located on the surface of the electronic device 101 at a location other than the position of the display 294.

[0105] The bone conduction sensor 280M can receive a vibration signal. In some embodiments, the implementation of the sensor 280M bone conduction can receive a vibration signal of the bone tissue of the vocal part (speech apparatus) of the person. The bone conduction sensor 280M can also be in contact with the body pulse to receive the blood pressure beat signal. In some embodiments, the bone conduction sensor 280M may also be located in a headset for integration into a bone conduction headset. The audio module 270 can acquire the voice signal by parsing based on the vibration signal which belongs to the vibratory bone of the vocal portion and which is received by the bone conduction sensor 280M to realize the voice function. The application processor can parse the heart rate information based on the blood pressure beat signal received by the bone conduction sensor 280M to realize the heart rate detection function.

[0106] The key 290 includes a power key, a volume key, and the like. The key 290 may be a mechanical key or a touch key. The electronic device 101 can receive key input, generate a key input related to user setting and control of the functions of the electronic device 101.

[0107] The motor 291 may generate a vibration prompt. The motor 291 may be used for vibration prompting on an incoming call, or may be used for vibration touch feedback. For example, touch operations performed in different applications (such as photography and audio playback) may correspond to different vibration feedback effects. The motor 291 may also correspond to different vibration feedback effects for touch operations performed in different areas of the display 294. Different application scenarios (eg, time reminder, information reception, alarm clock, and game) may also correspond to different vibration feedback effects. Optionally, a touch vibration feedback effect setting can be supported.

[0108] The indicator 292 may be an indicator light that may be configured to indicate charging status and power change, or may be configured to indicate a message, missed call, notification, or the like.

[0109] The SIM card interface 295 is configured to connect to a SIM card. The SIM card can be inserted into the SIM card interface 295 or detached from the SIM card interface 295 to come into contact with or be separated from the electronic device 101 . The electronic device 101 may support one or N SIM card interfaces, where N is a positive integer greater than 1. The SIM card interface 295 may support a nano SIM card, a micro SIM card, a SIM card, and the like. A plurality of cards can be inserted into the same SIM card interface 295 at the same time. The plurality of cards may be of the same or different types. The SIM card interface 295 can also be compatible with various types of SIM cards. The SIM card interface 295 may also be compatible with an external memory card. The electronic device 101 communicates with the network using a SIM card to realize a calling function, a data transmission function, or the like. In some embodiments, the electronic device 101 uses an eSIM, namely an embedded SIM card. The eSIM card may be embedded in the electronic device 101 and cannot be separated from the electronic device 101.

[0110] The software system of the electronic device 101 may use a layered architecture, an event-driven architecture, a microkernel architecture, a microservices architecture, or a cloud architecture. In this embodiment of this application, the layered architecture Android system is used as an example to describe the software structure of the electronic device 101.

[0111] FIG. 2B is a schematic diagram of the software structure of an electronic device 101 according to an embodiment of this application.

[0112] In a layered architecture, the software is divided into multiple layers, and each layer has a clear role and purpose. The levels interact with each other using a software interface. In some embodiments, the Android system is divided into four levels, namely the application program level, the application structure level, the Android runtime and the system library, and the kernel level from top to bottom.

[0113] The application layer may include a number of application packages.

[0114] As shown in FIG. 2B, the application package may include applications such as camera, gallery, calendar, telephone, map, navigation, WLAN, Bluetooth, music, video, and messaging.

[0115] The application program structure layer provides an application programming interface (API) and a programming structure for an application program at the application program level. The application structure layer includes some predefined functions.

[0116] As shown in FIG. 2B, the application structure layer may include a window manager, a content provider, a browser, a phone manager, a resource manager, a notification manager, and the like.

[0117] A window manager is configured to manage a window program. The window manager can get the size of the display, determine if there is a status bar, lock the screen, take a screenshot, and so on.

[0118] The content provider is configured to: store and retrieve data and provide access to the data to the application program. The data may include video, image, audio, calls made and answered, browsing history and bookmark, address book, and the like.

[0119] The viewing system includes visual controls such as a control for displaying text and a control for displaying a picture. The viewer system may be configured to create an application program. The display interface may include one or more views. For example, the display interface including the SMS notification icon may include a view for displaying text and a view for displaying a picture.

[0120] The phone manager is configured to provide a communication function of the electronic device 101, such as managing call status (including answer or reject).

[0121] The resource manager provides various resources such as a localized character string, an icon, a picture, a layout file, and a video file for an application program.

[0122] The notification manager allows an application to display notification information in the status bar and can be configured to send a notification type message. A notification type message can automatically disappear after a short pause without user intervention. For example, the notification manager is configured to provide download completion notifications, message prompts, and the like. The notification manager can be a notification that appears on the top system status bar as a graphic or scroll bar text, such as a notification about an application running in the background, or it can be a notification that appears on the screen as a dialog box. For example, text information is displayed in the status bar, an announcement is made, an electronic device vibrates, or an indicator light flashes.

[0123] The Android runtime includes a kernel library and a virtual machine. The Android runtime is responsible for scheduling and managing the Android system.

[0124] The core library consists of two parts: a function that must be called by the Java language, and an Android core library.

[0125] The application program layer and the application structure layer operate on a virtual machine. The virtual machine executes the application program level and application structure level java files as binary files. The virtual machine is configured to perform functions such as object lifecycle administration, stack management, thread management, security and exception management, and garbage collection.

[0126] The system library may include a plurality of functional modules, for example, a surface manager, a media library (Media Libraries), a 3D graphics processing library (for example, OpenGL ES), and a 2D graphics engine (for example, SGL).

[0127] The surface manager is configured to: control the display subsystem and provide a combination of two-dimensional and three-dimensional levels for a variety of application programs.

[0128] The media library supports playback and recording of a variety of commonly used audio and video formats, still image files, and the like. The media library can support many audio and video encoding formats such as MPEG-4, H.264, MP3, AAC, AMR, JPG, and PNG.

[0129] The 3D graphics processing library is configured to implement 3D graphics drawing, image rendering, composition, level processing, and the like.

[0130] The 2D graphics engine is a drawing engine for 2D drawing.

[0131] The kernel layer is the layer between hardware and software. The kernel level includes at least a display driver, a camera driver, a sound driver, and a sensor driver.

[0132] The following describes the software and hardware workflow of the electronic device 101 using an example with reference to a photographing scenario.

[0133] When the touch sensor 280K receives a touch operation, a corresponding hardware interrupt is sent to the core layer. The kernel layer processes the touch operation into an unhandled input event (including information such as the coordinates of the touch or the timestamp of the touch operation). The raw input event is stored at the kernel level. The application structure layer receives an unhandled input event from the kernel layer and identifies the control corresponding to the input event. For example, the tap operation is a tap tap operation, and the control corresponding to the tap operation is the camera application icon control. The camera application calls an interface at the application program structure level to invoke the camera application, then invokes the camera driver by calling the kernel level, and captures a still image or video using the camera 293.

[0134] Next, with reference to the accompanying drawings, a wireless charging method and an electronic device, which are provided in some embodiments of this application, will be described.

[0135] FIG. 3 is a schematic flow diagram of a wireless charging method according to an embodiment of this application. As shown in FIG. 3, the wireless charging method includes steps S301 to S303.

[0136] Step S301: The electronic device transmits the first detection signal when the electronic device is in the reverse wireless charging mode.

[0137] The electronic device is the first electronic device 101 shown in FIG. 1A and FIG. 1b.

[0138] In actual use, the electronic device includes a wireless charging circuit with a wireless charging coil. As shown in FIG. 2A, the wireless charging circuit may include a charge control module [240], a power management module [241], and a wireless charger. The wireless charger typically includes a wireless charging coil for transmitting a first acquisition signal and receiving a response signal for the first acquisition signal. The fact that the wireless charging circuit is operating in reverse wireless charging mode means that an electronic device is attempting to wirelessly charge another electronic device.

[0139] The first detection signal is used by the electronic device in the reverse wireless charging mode, such as the electronic device 101 in FIG. 1B to detect if another electronic device, such as the smart watch in FIG. 1B, wireless charging condition. When the strength of the first detection signal received by the smart watch exceeds the preset power threshold, the smart watch transmits the first response signal for the first detection signal. After receiving the first response signal, the electronic device stops transmitting the first detection signal and transmits a charging signal to the smart watch to wirelessly charge the smart watch.

[0140] It should be noted that, in order to save power, the transmission power of the detection signal transmitted by the power supply side is generally less than the transmission power of the charging signal transmitted by the power supply side, and the transmission frequency of the detection signal transmitted by the power supply is generally less than the transmission frequency charging signal transmitted by the power supply side.

[0141] It is easy to understand that an electronic device wirelessly charges another electronic device, such as a smart watch, only when the electronic device is in the reverse wireless charging mode, for example, the electronic device is manually set to the reverse wireless charging mode.

[0142] Of course, the electronic device does not always transmit the first detection signal to avoid power loss. For example, the Qi standard specifies that a wireless charger sends a detection signal every 500 milliseconds (ms). The duration for sending the discovery signal each time is typically 90ms.

[0143] For example, the electronic device may control, with the processor of the electronic device, the charger of the electronic device to transmit a first detection signal.

[0144] Step S302: The electronic device receives, at a time interval between at least two adjacent times at which the first detection signal is transmitted, the second detection signal transmitted by the wireless charging device.

[0145] For example, the transmission frequency of the first acquisition signal is the first transmission frequency, and the transmission frequency of the second acquisition signal is the second transmission frequency.

[0146] The second detection signal is used by the wireless charging device to detect whether the electronic device, such as the electronic device 101 in FIG. 1A, wireless charging condition.

[0147] In an exemplary embodiment, the first transmission frequency is different from the second transmission frequency, and the first transmission frequency is not an integer multiple of the second transmission frequency. The electronic device receives, at a time interval between two adjacent times when the first detection signal is transmitted, the second detection signal transmitted by the wireless charging device.

[0148] FIG. 4 is a schematic diagram of a time sequence relationship between a second acquisition signal transmitted by a wireless charging device and a first acquisition signal transmitted by an electronic device, according to an embodiment of this application.

[0149] As shown in FIG. 4, the electronic device sequentially transmits the first detection signals at times t11 to t15, where the transmission frequency is f1 and the corresponding first transmission cycle is T1. The wireless charging device transmits second detection signals from t21 to t24, where the transmission frequency is f2, the corresponding first transmission cycle is T2, and T2 is greater than T1, that is, f1 is less than f2. As shown in FIG. 4, at times t22 and t23, the electronic device charger does not transmit the first detection signal, that is, the electronic device charger is in a standby state, in which case the electronic device can receive, with the electronic device charger, the second discovery signals transmitted by the device. wireless charging.

[0150] Referring to FIG. 4, t12 and t13 are two adjacent times at which the electronic device transmits the first detection signal. The electronic device receives at the time t22 of the gap between t12 and t13 the second detection signal t22 transmitted by the wireless charging device.

[0151] For example, the circuit or apparatus used by the electronic device to receive the second acquisition signal may be a wireless charging circuit of the electronic device, or may be a circuit, device or apparatus coupled to the wireless charging circuit of the electronic device.

[0152] For example, as shown in FIG. 5, the wireless charging circuit of the wireless charger includes a transmitting coil L1 and a capacitor C1, and the wireless charging circuit of an electronic device includes a receiving coil L2 and capacitors C2 and C3. The wireless charging circuit that receives the second detection signal may be a sampling circuit connected to the wireless charging circuit of the electronic device, such as the sampling circuit in FIG. 5.

[0153] It can be understood that the circuit or apparatus used by the electronic device to receive the second acquisition signal can alternatively be other circuit, device and apparatus independent of the aforementioned wireless charging circuit, such as an electromagnetic sensor (e.g. Hall Sensor) in the electronic device . This is not limited in this embodiment of the present application.

[0154] After receiving the second acquisition signal with the sampling circuit or the electromagnetic sensor, the electronic device determines, using the processor of the electronic device, whether the received second acquisition signal meets a predetermined condition.

[0155] For example, the electronic device may determine whether the power of the second acquisition signal received by the electronic device exceeds a predetermined power threshold. In an exemplary execution method, the preset condition may include at least one of the following:

the voltage of the second detection signal is greater than the first voltage threshold;

the second detection signal current is greater than the first current threshold; or

the power of the second detection signal is greater than the first power threshold.

[0156] It should be noted that the first voltage threshold, the first current threshold, and the first power threshold may be preset based on actual requirements for wireless charging.

[0157] In order to improve the accuracy of the predetermined condition determination result and avoid misdetermination, the least number of times the predetermined condition is met can also be limited. Therefore, in another possible manner of execution, the preset condition may alternatively include at least one of the following:

the number of times when the voltage of the second detection signal received by the electronic device at a predetermined time exceeds the first voltage threshold, greater than the threshold of the first number of times;

the number of times that the current of the second detection signal received by the electronic device at a predetermined time exceeds the first current threshold is greater than the threshold of the second number of times; or

the number of times that the power of the second detection signal received by the electronic device at the predetermined time exceeds the first power threshold is greater than the threshold of the third number of times.

[0158] It should be noted that the preset time, the first threshold number of times, the second threshold number of times, and the third threshold number of times can be preset based on actual wireless charging requirements such as battery capacity or charging power.

[0159] Step S303: if the second detection signal received by the electronic device meets a predetermined condition, the electronic device automatically switches from the reverse wireless charging mode to the direct wireless charging mode.

[0160] The fact that the electronic device automatically switches from reverse wireless charging mode to direct wireless charging mode means that the electronic device is ready to receive the charging signal transmitted by the wireless charger.

[0161] If the second detection signal received by the electronic device meets the predetermined condition, the wireless charging method may further include step 1 and step 2.

[0162] Step 1: The electronic device sends a response signal to the wireless charger.

[0163] The response signal carries indication information. The indication information may be used to indicate that the second acquisition signal received by the electronic device satisfies a predetermined condition. The indication information may alternatively be used to indicate that the electronic device is ready to receive a charging signal from the wireless charger. Alternatively, the indication information may be used to direct the wireless charging device to output a charging signal.

[0164] After the wireless charger receives the response signal transmitted by the electronic device, the wireless charger may transmit a charging signal to the electronic device. In other words, the wireless charging method may further include the following step:

[0165] Step 2: The electronic device receives the charging signal transmitted by the wireless charger.

[0166] It should be noted that in order to reduce the loss of excess power during the transmission of the second detection signal and improve the charging efficiency in the charging process, at least one of the following conditions is usually required when the wireless charging device transmits the second detection signal and the charging signal.

[0167] Condition 1: The transmission frequency of the second detection signal is less than the transmission frequency of the charging signal.

[0168] Condition 2: The transmission power of the second detection signal is less than the transmission power of the charging signal.

[0169] Condition 3: The wireless charging device can periodically transmit the second discovery signal, for example, transmit the second discovery signal every 500 milliseconds for 10 milliseconds. After receiving the response signal transmitted by the electronic device, the wireless charger can continuously transmit a charging signal until charging of the electronic device is completed.

[0170] It should be noted that, in order to avoid the case where electric power is wasted because the electronic device transmits the first detection signal, when the electronic device is in the direct wireless charging mode, the electronic device may not transmit the first detection signal.

[0171] According to the wireless charging method provided in this embodiment of this application, the electronic device is in reverse wireless charging mode and transmits the first detection signal. The electronic device can receive at a time interval between when the electronic device transmits the first detection signal, the second detection signal transmitted by the wireless charging device, and when the electronic device detects that the received second detection signal meets a predetermined condition, the electronic device can automatically switch from reverse wireless charging to wireless direct charging mode, in other words, the electronic device can automatically and adaptively switch from wireless direct charging mode to wireless reverse charging mode without manual operation, to improve wireless charging reliability and user convenience.

[0172] The above is described in detail with reference to FIG. 3 - fig. 5, the wireless charging method provided in the embodiments of this application. The following describes in detail the electronic device in the above method embodiments with reference to FIG. 6 and FIG. 7.

[0173] In some embodiments of this application, an electronic device may be divided into functional modules or functional blocks based on the above example methods. For example, functional modules or functional blocks can be obtained by separation based on respective functions, or two or more functions can be integrated into one processing module. The above integrated module may be implemented in hardware, or may be implemented as a software function module or function block. It should be noted that in the embodiments of this application, the division into modules or blocks is an example and is simply a logical division of functions and may be another division in the actual implementation.

[0174] FIG. 6 is a possible schematic structural diagram of the electronic device in the above embodiments. As shown in FIG. 6, the electronic device 600 includes a transmitting module 601, a receiving module 602, and a processing module 603.

[0175] The transmitter module 601 is configured to transmit a first discovery signal when the electronic device is in reverse wireless charging mode.

[0176] The receiving module 602 is configured to receive, at a time interval between at least two adjacent times at which the first acquisition signal is transmitted, the second acquisition signal transmitted by the wireless charging device.

[0177] The processing unit 603 is configured to: if the second detection signal received by the receiving unit 602 satisfies a predetermined condition, automatically switch the electronic device from reverse wireless charging mode to direct wireless charging mode.

[0178] In addition, as shown in FIG. 6, the electronic device 600 may further include a storage module 604 configured to store program instructions and data of the electronic device 600.

[0179] For example, the transmission frequency of the first acquisition signal is the first transmission frequency, and the transmission frequency of the second acquisition signal is the second transmission frequency. In an exemplary embodiment, the first transmission frequency is different from the second transmission frequency, and the first transmission frequency is not an integer multiple of the second transmission frequency.

[0180] In an exemplary embodiment, the predetermined condition includes at least one of the following:

the voltage of the second detection signal received by the electronic device exceeds the first voltage threshold;

the current of the second detection signal received by the electronic device is greater than the first current threshold; or

the power of the second detection signal received by the electronic device exceeds the first power threshold.

[0181] In another possible implementation, the predetermined condition includes at least one of the following:

the number of times when the voltage of the second detection signal received by the electronic device at a predetermined time exceeds the first voltage threshold value is greater than the threshold value of the first number of times;

the number of times that the current of the second detection signal received by the electronic device at a predetermined time exceeds the first current threshold value is greater than the threshold value of the second number of times; or

the number of times that the power of the second detection signal received by the electronic device at the predetermined time exceeds the first power threshold is greater than the threshold of the third number of times.

[0182] In an exemplary embodiment, the transmitter module 601 is further configured to transmit a response signal to the wireless charger.

[0183] The response signal carries indication information, and the indication information is used to indicate that the second acquisition signal received by the electronic device satisfies a predetermined condition.

[0184] Optionally, the receiving module 602 is further configured to: after the transmitting module 601 transmits a response signal to the wireless charger, receive the charging signal transmitted by the wireless charger.

[0185] Optionally, the transmission power of the charging signal is greater than the transmission power of the second detection signal; and/or the transmission frequency of the charging signal is greater than the second transmission frequency.

[0186] In this embodiment of this application, each of the receiving module 602 and the transmitting module 601 may be a charging circuit including a charging coil or hardware in an electronic device.

[0187] FIG. 7 is another possible schematic structural diagram of the electronic device in the above embodiments. As shown in FIG. 7, the electronic device 700 includes a processor 701 and a communication interface 702. The processor 701 is configured to: control and administer the operation of the electronic device, such as the execution of a step performed by the processing module 603. In addition, the processor 701 is further configured to control the communication interface 702 to communicate the electronic device with another network entity, such as performing steps performed by the transmitter module 601 and the receiver module 602. In addition, the electronic device may further include a memory 703 and bus 704. Memory 703 is configured to store program code and data of the electronic device.

[0188] Processor 701 may be a processor or controller in an electronic device. A processor or controller may implement or execute various exemplary logical blocks, modules, and circuits described with reference to the content disclosed in this application. The processor or controller may be a central processing unit, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field-programmable gate array or other programmable logic device, a transistorized logic device, a hardware component, or any combination thereof. The processor may implement or execute various exemplary logical blocks, modules, and circuits described with reference to the content disclosed in this application. Alternatively, the processor may be a combination of processors that implement a computing function, such as a combination of one or more microprocessors, or a combination of a digital signal processor (DSP) and a microprocessor.

[0189] The communication interface 702 may be a transceiver, a transceiver circuit, a communication interface, or the like. in an electronic device. In this embodiment of this application, communication interface 702 may be a charging circuit including a charging coil, or hardware in an electronic device.

[0190] The memory 703 may be a memory or the like in an electronic device. The memory may include volatile memory such as RAM. Alternatively, the memory may include non-volatile memory such as read-only memory, flash memory, a hard drive, or a solid state drive. Alternatively, the memory may include a combination of the above types of memory.

[0191] Bus 704 may be an extended industry standard architecture (EISA) bus or the like. Bus 704 can be classified into an address bus, a data bus, a control bus, and the like. For ease of presentation, only one thick line is used to represent tire 704 in FIG. 7, but this does not mean that there is only one bus or only one type of bus.

[0192] In addition, an embodiment of this application further provides a computer-readable storage medium. A computer-readable storage medium stores a computer instruction. When the computer instruction is executed on the computer, the computer is allowed to perform the wireless charging method provided in the embodiments of this application and the corresponding operations and/or procedures performed by the electronic device or the second device in the resource scheduling method embodiments.

[0193] An embodiment of this application further provides a computer program product. The computer program product includes computer program code. When the computer program code is run on the computer, the computer is able to perform the resource scheduling method provided in the embodiments of this application and the corresponding operations and/or procedures performed by the electronic device or the second device in the resource scheduling method embodiments.

[0194] This application also provides a chip system that can be applied to the above electronic device. The chip system includes a processor and a communication interface. The processor is configured to: read and run a computer program stored in the memory to perform the wireless charging method provided in the embodiments of this application and the corresponding operations and/or procedures performed by the electronic device in the wireless charging method embodiments. The memory is connected to the processor using a circuit or electrical wire. The processor is configured to: read and execute a computer program in memory. The communication interface is configured to receive data and/or information to be processed. The processor receives data and/or information from the communication interface and processes the data and/or information. For example, the communication interface may be a transceiver or an input/output interface.

[0195] An embodiment of this application provides a wireless charging system. The wireless charging system may include the aforementioned electronic device and the wireless charging device, and is configured to perform the wireless charging method provided in the embodiments of this application. For specific descriptions of the electronic device and wireless charging device, refer to the above method embodiments and apparatus embodiments. Details are not described here again.

[0196] It should be understood that the processor in the embodiments of this application may be a central processing unit (CPU). Alternatively, the processor may be another general purpose processor, digital signal processor (DSP), application specific integrated circuit (ASIC), field programmable gate array (FPGA), or other programmable logic device, discrete gate or transistorized logic device, discrete hardware component, or the like. A general purpose processor may be a microprocessor, or the processor may be any conventional processor or the like.

[0197] It should also be understood that the memory in embodiments of this application may be volatile memory or non-volatile memory, or may include both volatile memory and non-volatile memory. Non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically erasable programmable read-only memory (electrically EPROM, EEPROM), or flash -memory. The volatile memory can be random access memory (RAM) and used as an external cache. In an exemplary, but non-limiting description, many forms of random access memory (RAM) can be used, for example, static random access memory (static RAM, SRAM), dynamic random access memory (DRAM), synchronous dynamic memory random access (synchronous DRAM, SDRAM), synchronous dynamic random access memory with double data rate (double data rate SDRAM, DDR SDRAM), improved synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous dynamic random access memory access memory (enhanced SDRAM, ESDRAM) and direct access memory (direct rambus RAM, DR RAM).

[0198] All or some of the above embodiments may be implemented using software, hardware (eg, circuitry), firmware, or any combination thereof. When software is used to implement the embodiments, the above embodiments may be implemented in whole or in part in the form of a computer program product. A computer program product includes one or more computer instructions or computer programs. When program instructions or computer programs are downloaded and executed on a computer, procedures or functions according to embodiments of this application are generated in whole or in part. The computer may be a general purpose computer, a specialized computer, a computer network, or other programmable device. The computer instructions may be stored on a computer-readable storage medium or may be transmitted from a computer-readable storage medium. For example, computer instructions may be transmitted from a website, computer, server, or data center to another website, computer, server, or data center via a wired (eg, infrared, radio, or microwave) method. A computer-readable storage medium can be any usable medium accessible to a computer, or a storage device such as a server or data center that combines one or more usable media. The media used may be magnetic media (eg floppy disk, hard disk or magnetic tape), optical media (eg DVD) or semiconductor media. The semiconductor medium may be a solid state drive.

[0199] It should be understood that the term "and/or" in the embodiments of this application only describes an association condition for describing related objects, and represents that three conditions may exist. For example, A and/or B could represent the following three cases: only A exists, both A and B exist, and only B exists. A and B can be singular or plural. In addition, the "/" character in this specification usually represents an "or" condition between related entities, or may represent an "and/or" condition. For details, please refer to the previous and following description.

[0200] In embodiments of this application, "at least one" means one or more, and "many" means two or more. "At least one (element) of the following" or a similar expression means any combination of these elements, including any combination of individual elements (parts) or multiple elements (parts). For example, at least one of a, b, or c may represent: a, b, c, ab, ac, bc, or abc, where a, b, and c may be singular or plural.

[0201] In embodiments of this application, the terms "first", "second", etc. are intended to distinguish between different objects, or to distinguish between different processing of the same object, but do not specify the specific order of the objects.

[0202] In embodiments of this application, the terms "include", "have", and any other variation thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or blocks, is not limited to the steps or blocks listed, but additionally includes other unspecified steps or blocks in some embodiments, or further includes another integral step. or a block of a process, method, product, or device in some embodiments.

[0203] In embodiments of this application, the word "for example" or "for example" is used to represent an example, illustration, or description. Any embodiment or implementation scheme described as "for example" or "for example" in the embodiments of this application should not be explained as preferable or having more advantages than another embodiment or implementation scheme. Precisely, the use of the words "for example" or "for example" is intended to represent the related concept in a particular way.

[0204] In the embodiments of this application, "information (information)", "signal (signal)", "message (message)", "channel (channel)", "signaling (singalling)" and "message (message)" can sometimes used interchangeably. It should be noted that meanings expressed in terms are consistent when differences are not underlined. "Of(of)", "corresponding (corresponding, relevant)", and "relevant (relevant)" can sometimes be used interchangeably. It should be noted that the meanings expressed in terms are consistent when differences are not underlined.

[0205] In embodiments of this application, sometimes the subscript, for example, in W_one maybe be written in an irregular form such as W1. Expressed values are consistent when differences are not underlined.

[0206] It should be understood that the sequence numbers of the processes do not mean the sequence of execution in various embodiments of this application. Process execution sequences should be determined based on the functions and internal logic of the processes and should not be construed as any limitation on the implementation processes of the embodiments of this application.

[0207] One skilled in the art may be aware that the blocks and steps of the algorithm in the examples described with reference to the embodiments disclosed in this specification may be implemented using electronic hardware or a combination of computer software and electronic hardware. Whether the functions are performed by hardware or software depends on the specific applications and design constraints of the technical solutions. A person skilled in the art can use various methods to implement the described functions for each particular application, but such an implementation should not be considered to be outside the scope of this application.

[0208] A person skilled in the art can be clear that for the purpose of convenient and concise description for a detailed workflow of the above system, device and unit, reference can be made to the corresponding process in the embodiments of the above method. Details are not described here again.

[0209] In several embodiments presented in this application, it should be understood that the disclosed system, apparatus, and method may be implemented in a different manner. For example, the apparatus embodiment described above is merely an example. For example, block division is simply a division of logical functions and may be another division in a real implementation. For example, many blocks or components may be combined or integrated into another system, or certain features may be ignored or not implemented. In addition, the interconnections displayed or discussed or direct links or communication connections may be implemented using some interfaces. Indirect connections or communication connections between devices or units may be implemented in electronic, mechanical or other form.

[0210] Blocks described as separate parts may or may not be physically separate, and parts displayed as blocks may or may not be physical blocks and may be located in the same position or may be distributed over multiple network blocks. Some or all of the blocks may be selected based on the actual requirement to achieve the goals of the solutions of the embodiments.

[0211] In addition, the functional blocks in the embodiments of this application may be integrated into one processing unit, or each of the units may exist physically separately, or two or more units are integrated into one unit.

[0212] When the functions are implemented in the form of a software functional block and sold or used as a standalone product, the functions may be stored on a computer-readable storage medium. Based on this understanding, the technical solutions of this application per se, or part of it that contributes to the prior art, or some of the technical solutions can be implemented in the form of a computer program product. The computer program product is stored on a storage medium and includes several instructions for directing a computing device (which may be a personal computer, a server, or a network device) to perform all or some of the steps of the methods in embodiments of this application. The aforementioned storage medium includes any medium on which program code can be stored, such as a USB flash drive, removable hard disk, read-only memory (ROM), random access memory (RAM) , magnetic disk or optical disk.

[0213] The above description is only specific implementations of this application, but is not intended to limit the scope of protection of this application. Any change or replacement readily detectable by a person skilled in the art within the technical scope disclosed in this application should/should fall within the scope of this application. Therefore, the scope of this application is protected by the claims.

Claims (29)

1. A wireless charging method, comprising: transmitting, by the first electronic device, a first detection signal when the first electronic device is in the wireless charging output mode to detect whether the second electronic device meets the wireless charging condition, wherein the first electronic device attempts to wirelessly charge the second electronic device when the first electronic device is in the reverse wireless charging mode, wherein the transmission power of the first detection signal is less than the transmission power of the charging signal transmitted by the first electronic device, and the transmission frequency of the first detection signal is less than the transmission frequency of the charging signal transmitted by the first electronic device; receiving, by the first electronic device, a second detection signal transmitted by the wireless charging device, wherein the transmission frequency of the first detection signal is the first transmission frequency, the transmission frequency of the second detection signal is the second transmission frequency, and wherein the first transmission frequency is different from the second transmission frequency and the first frequency transmission is not an integer multiple of the second transmission frequency; and in response to the second detection signal, switching the first electronic device from the wireless charging output mode to the wireless charging input mode. 2. The wireless charging method according to claim 1, wherein the wireless charger is in a wireless charging output mode, wherein the second detection signal is received by the first electronic device when the first electronic device is in the wireless charging output mode and when the first electronic device does not transmit the first signal detection. 3. The wireless charging method according to claim 2, wherein the second acquisition signal is received by the first electronic device when the first electronic device is in the wireless charging output mode and when the first electronic device does not transmit the first acquisition signal, the method comprising: the second the detection signal is received by the first electronic device when the first electronic device is in the wireless charging output mode, and the second detection signal is received at a time interval between the times at which the first electronic device transmits the first detection signal. 4. The wireless charging method according to claim 2 or 3, wherein the second acquisition signal is received by the first electronic device when the first electronic device is in the wireless charging output mode and when the first electronic device does not transmit the first acquisition signal, the method comprising the step of wherein the second acquisition signal is received by the first electronic device when the first electronic device is in the wireless charging output mode, and the second acquisition signal is received at a time interval between at least two adjacent times at which the first electronic device transmits the first acquisition signal. 5. The wireless charging method according to any one of claims 1 to 4, comprising, when the first electronic device switches to the wireless charging input mode, the first electronic device receives a wireless charging signal from the wireless charger so as to receive a charging current from wireless chargers. 6. The wireless charging method according to any one of claims 1 to 5, wherein in response to the second detection signal, switching by the first electronic device from the wireless charging output mode to the wireless charging input mode comprises, in response to the second detection signal, automatically switching by the first electronic device with wireless charging output mode to wireless charging input mode. 7. The wireless charging method according to any one of claims 1 to 6, wherein in response to the second detection signal, switching by the first electronic device from the wireless charging output mode to the wireless charging input mode comprises, in response to the second detection signal, automatically switching by the first electronic device with wireless charging output mode to wireless charging input mode. 8. The wireless charging method according to any of claims 1 to 7, the method further comprising, in response to user input, setting the first electronic device to a wireless charging output mode. 9. Wireless charging method according to any one of claims 1 to 8, wherein the first detection signal is transmitted by the first electronic device through the wireless charging coil; and the second detection signal is received by the first electronic device via the wireless charging coil. 10. The wireless charging method according to any one of claims 1 to 9, wherein the transmission frequency at which the wireless charger transmits the second detection signal is the second frequency, the transmission frequency at which the wireless charger transmits the charging signal is the third frequency; wherein the second frequency is less than the third frequency, or the transmission power of the charging signal is greater than the transmission power of the second detection signal. 11. The wireless charging method according to any one of claims 1 to 10, wherein, in response to the second detection signal, switching by the first electronic device from the wireless charging output mode to the wireless charging input mode comprises, in response to the second detection signal, satisfying a predetermined condition , switching by the first electronic device from the wireless charging output mode to the wireless charging input mode, wherein the preset condition comprises at least one of the following: the voltage of the second detection signal received by the first electronic device exceeds the first voltage threshold; the current of the second detection signal received by the first electronic device is greater than the first current threshold; or the power of the second detection signal received by the first electronic device exceeds the first power threshold. 12. The wireless charging method according to any one of claims 1 or 10, wherein, in response to the second detection signal, switching by the first electronic device from the wireless charging output mode to the wireless charging input mode comprises, in response to the second detection signal satisfying a predetermined condition, switching by the first electronic device from the wireless charging output mode to the wireless charging input mode, wherein the preset condition comprises at least one of the following: the number of times when the voltage of the second detection signal received by the first electronic device at a predetermined time exceeds the first voltage threshold value is greater than the threshold value of the first number of times; the number of times when the current of the second detection signal received by the first electronic device at a predetermined time exceeds the first current threshold value is greater than the threshold value of the second number of times; or the number of times when the power of the second detection signal received by the first electronic device at a predetermined time exceeds the first power threshold is greater than the threshold of a third number of times. 13. The wireless charging method according to claim 11 or 12, further comprising transmitting a response signal to the wireless charging device by the first electronic device, wherein the response signal carries indication information, and the indication information is used to indicate that the second detection signal received by the first electronic device , satisfies the preset condition. 14. The wireless charging method according to claim 13, wherein after the first electronic device transmits a response signal to the wireless charger, the wireless charging method further comprises receiving the charging signal transmitted by the wireless charger by the first electronic device. 15. The wireless charging method according to any one of claims 1 to 14, wherein the transmission power of the charging signal is greater than the transmission power of the second detection signal; and/or the transmission frequency of the charging signal is greater than the second transmission frequency. 16. A chip comprising a processor and a communication interface, the processor configured to run a computer program stored in memory to implement the wireless charging method according to any one of claims 1-15. 17. An electronic device comprising a processor and a memory, wherein the memory is configured to store one or more programs, the one or more programs being configured to be executed by the one or more processors, the one or more programs causing the electronic device to perform a wireless charging method according to any one of claims .1-15. 18. A computer-readable storage medium storing a computer instruction, wherein, when the computer instruction is executed in the computer, the computer program executes the wireless charging method according to any one of claims 1 to 15.

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