A charging control method and related device

Abstract

The present application provides a charging control method and related devices, which relate to the field of terminal technology. The method includes: when the battery charging of the electronic device is cut off and the charger is in place, the parameters collected by the power meter connected to the two ends of the BTB connector of the battery are monitored; when the recharging condition is met, the charging IC chip of the electronic device is controlled to recharge the battery; the recharging condition includes: the interval between the time when the voltage collected by the power meter is less than the first preset threshold or the power collected by the power meter is less than the second preset threshold and the time when the charging is cut off is a preset time length, and the preset time length can be obtained by measuring the change of the power over time after the battery charging is cut off. By introducing the preset time length, the battery power failure of the electronic device can be detected in time, and then the battery can be recharged as soon as possible, so that the battery power is more fully charged, thereby extending the battery life and improving the user experience.

Description

[0001] This application is a divisional application of the invention patent application with application number 202210704814.8 submitted to the China Patent Office, application date June 21, 2022, and invention name “A charging control method and related devices”. Technical Field

[0002] The present application relates to the field of terminal technology, and more specifically, to a charging control method and related devices. Background Art

[0003] In daily life, people use a variety of electronic devices, many of which are powered by batteries, so they need to be charged. Electronic devices measure the voltage of the battery to determine whether the battery is fully charged.

[0004] However, after charging is terminated, the battery power may drop in a short period of time. For example, actual measurements of electronic devices show that after charging is terminated, the battery power drops from 100% to 97% in five minutes when the charger is unplugged and the electronic device is not in use. This is equivalent to charging to 97% when charging is terminated, which affects the battery life and the user experience.

[0005] Therefore, it is hoped to provide a method to extend the battery life and improve the user experience. Summary of the invention

[0006] The present application provides a charging control method and related devices to extend the battery life and improve the user experience.

[0007] In a first aspect, a charging control method is provided. The method can be executed by a charging control device. The charging control device can be deployed in an electronic device, for example, a chip, a chip system, etc., to realize the functions of the charging control device.

[0008] Exemplarily, the method includes: when charging of a battery of an electronic device is cut off and a charger is in place, monitoring parameters collected by a fuel gauge at both ends of a board-to-board (BTB) connector connected to the battery; when a recharging condition is met, controlling a charging integrated circuit (IC) chip of the electronic device to recharge the battery; wherein the recharging condition includes: the interval between the time when the voltage collected by the fuel gauge is less than a first preset threshold or the amount of electricity collected by the fuel gauge is less than a second preset threshold and the time when charging is cut off is a preset time length.

[0009] Among them, the parameters collected by the fuel gauge connected to both ends of the BTB connector may include voltage, current, power, etc. Since the BTB connector is closer to the battery, the parameters collected by the fuel gauge connected to both ends of the BTB connector are closer to the actual condition of the battery than the parameters collected by the charging IC. Therefore, it is more reasonable to judge whether the recharging conditions are met based on the parameters collected by the fuel gauge, and it can also more accurately judge whether the battery needs to be recharged.

[0010] Due to the chemical characteristics of the battery, the battery will generate polarization impedance during the charging process. Polarization impedance will make the measured battery voltage greater than the voltage corresponding to its current power. This will result in the battery not being fully charged when charging is stopped. Once charging is stopped, the current drops, the polarization impedance of the battery drops, and the polarization voltage caused by the polarization impedance also drops, and the power drops from 100%.

[0011] Therefore, the preset duration in the recharging condition proposed in the present application can be obtained by measuring the change of the battery power over time after the battery charging is cut off. For example, if the battery starts to lose power 3 minutes after the charging is cut off, the preset duration can be set to 3 minutes. After waiting for 3 minutes after the charging is cut off, if the voltage is less than the first preset threshold or the power is less than the second preset threshold, it can be considered that the recharging condition is met. In this way, the battery power loss can be detected in a shorter time after the charging is cut off, and the battery can be recharged as soon as possible to make the battery charge more fully, thereby extending the battery life and improving the user experience.

[0012] On the contrary, if the time between the voltage being less than the first preset threshold or the power being less than the second preset threshold and the charging cutoff is longer than the preset time, such as more than 3 minutes, it can be considered that the recharging condition is not met. This can avoid repeated recharging of the battery, reduce damage to the battery, and help extend the battery life.

[0013] In combination with the first aspect, in some possible implementations of the first aspect, when the recharging condition is met, the difference between the voltage collected from the charging IC chip and the charging cut-off voltage is less than 100 millivolts.

[0014] In existing electronic devices, the battery will not be recharged until the difference between the voltage collected by the charging IC chip and the cut-off voltage reaches 100 millivolts or 200 millivolts. This means that it takes a long time to recharge the battery, that is, the interval between charging cut-off and recharging is long. In this solution, the difference between the voltage collected by the charging IC chip and the cut-off voltage can be less than 100 millivolts. In other words, the interval between charging cut-off and recharging is shorter, in other words, the recharging condition is reached faster, which is conducive to the battery being fully charged as soon as possible.

[0015] In combination with the first aspect, in some possible implementations of the first aspect, the method further includes: receiving a charging termination notification from a charging IC chip, where the charging termination notification is used to indicate that charging of the battery is terminated.

[0016] The charging IC chip of the electronic device can control the disconnection or closing of the charging circuit, so when the charging reaches the cut-off condition, the charging IC chip can determine the charging cut-off, disconnect the charging circuit, and stop charging the battery. The charging IC chip can send a charging cut-off notification to the charging control device. In this way, the charging control device can start to monitor the parameters measured by the fuel gauge connected to both ends of the BTB connector after charging is cut off, so as to timely control the charging IC chip to recharge the battery when the recharging conditions are met.

[0017] In combination with the first aspect, in some possible implementations of the first aspect, the parameters collected by the power meter at both ends of the BTB connector connected to the battery are monitored, including: acquiring the parameters collected by the power meter from the power meter at both ends of the BTB connector connected to the battery in real time to monitor the acquired parameters.

[0018] Real-time acquisition of parameters is helpful for knowing the battery condition in real time, and making quick judgments and taking actions when the battery condition changes.

[0019] In combination with the first aspect, in some possible implementations of the first aspect, controlling the charging IC chip of the electronic device to recharge the battery includes: sending a recharging instruction to the charging IC chip of the electronic device to trigger the charging IC chip to recharge the battery until the battery reaches the charging cut-off condition again.

[0020] The charging IC chip of the electronic device can control the disconnection or closing of the charging circuit. Therefore, if the battery needs to be recharged, a recharging instruction can be sent to the charging IC chip to trigger the charging IC chip to close the charging circuit and recharge the battery.

[0021] In combination with the first aspect, in some possible implementations of the first aspect, the current used to recharge the battery is a minimum cutoff current of the battery.

[0022] The minimum cutoff current is the minimum cutoff current used to charge the battery. The minimum cutoff current can be determined based on the parameters in the battery specification. For example, the minimum cutoff current can be 0.025C, where C represents the current of the nominal capacity of the battery. For example, when the battery capacity is 5000 mAh, the current of the nominal capacity of the battery is 5000 mAh, and the minimum cutoff current can be 125 mAh.

[0023] It should be understood that the minimum cut-off current of the battery is a relatively small current. Using the minimum cut-off current of the battery for recharging can reduce the polarization voltage caused by the polarization impedance of the battery as much as possible, so that the battery can be truly fully charged after this replenishment.

[0024] In addition, using the minimum cutoff current for recharging, that is, using a current of substantially constant magnitude for recharging, makes it easier to calculate the amount of electricity charged into the battery during the recharging process, thereby making it easier to calculate the amount of electricity collected by the fuel meter, which is beneficial for knowing the battery charging status.

[0025] In combination with the first aspect, in some possible implementations of the first aspect, a current I for recharging the battery satisfies: 50 mA<I<800 mA.

[0026] The polarization impedance of the battery is related to the charging current. In order to minimize the polarization impedance generated by the battery, the current for recharging the battery should be relatively small compared to the normal charging current. For different electronic devices, the value of the current for recharging the battery can be different. For electronic devices with smaller battery capacity, such as smart wearable devices such as smart bracelets or smart watches, the cut-off current, cut-off voltage and pre-set maximum charging current are all small, so the current for recharging the battery is also small; while for electronic devices with larger battery capacity, such as tablets or laptops, the cut-off current, cut-off voltage and pre-set maximum charging current are all large, so the current for recharging the battery is also large. In the range of 50 mA to 800 mA, the current for recharging most electronic devices can be adapted.

[0027] In combination with the first aspect, in some possible implementations of the first aspect, the current used to recharge the battery is related to a parameter configuration of a charging IC chip of the electronic device.

[0028] The parameters here may include: cut-off current, cut-off voltage and a preset maximum charging current, etc.

[0029] In a second aspect, the present application provides a charging control device, which includes a processor and a memory communicatively connected to the processor; the memory is used to store computer instructions; the processor is used to execute the computer instructions stored in the memory to implement the first aspect and any possible implementation method of the first aspect.

[0030] In a third aspect, the present application provides an electronic device, comprising a charging control device, a charging IC chip, and a battery board with a battery installed; wherein the charging control device is used to implement the first aspect and any possible implementation method of the first aspect.

[0031] In a fourth aspect, the present application provides a computer-readable storage medium, comprising a computer program, which, when executed on a computer, enables the computer to execute the method in the first aspect and any possible implementation of the first aspect.

[0032] In a fifth aspect, the present application provides a computer program product, including a computer program, which, when executed on a computer, enables the computer to execute the method in the first aspect and any possible implementation manner of the first aspect.

[0033] It should be understood that the second to fifth aspects of the present application correspond to the technical solutions of the first aspect of the present application, and the beneficial effects achieved by each aspect and the corresponding feasible implementation methods are similar and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application;

[0035] Figure 2 It is a structural schematic diagram of an electronic device applicable to the charging control method provided in this application;

[0036] Figure 3 is a schematic flow chart of a charging control method provided in an embodiment of the present application;

[0037] Figure 4 is a schematic diagram of a possible embodiment of the charging control method provided by the embodiment of the present application;

[0038] Figure 5 It is a schematic diagram of the hardware structure of the charging control device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0039] In order to facilitate the clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, the words "first" and "second" are used to distinguish the same items or similar items with basically the same functions and effects. For example, the first chip and the second chip are only used to distinguish different chips, and their order is not limited. Those skilled in the art can understand that the words "first" and "second" do not limit the quantity and execution order, and the words "first" and "second" do not necessarily limit them to be different.

[0040] It should be noted that in the embodiments of the present application, words such as "exemplarily" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplarily" or "for example" in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplarily" or "for example" is intended to present related concepts in a specific way.

[0041] In the embodiments of the present application, "at least one" refers to one or more, and "plurality" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple.

[0042] The file sharing method provided in the embodiment of the present application can be applied to electronic devices with display functions and file transfer functions. The electronic device can be a mobile phone, a smart TV, a wearable device, a tablet computer (pad), a computer with wireless transceiver function, a virtual reality (VR) electronic device, an augmented reality (AR) electronic device, a wireless terminal in industrial control (industrial control), a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in a smart city (smart city), a wireless terminal in a smart home (smart home), etc. The embodiment of the present application does not limit the specific technology and specific device form adopted by the electronic device.

[0043] In order to better understand the embodiments of the present application, the structure of the electronic device provided in the embodiments of the present application is introduced below:

[0044] Figure 1 It is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application.

[0045] Figure 1The electronic device 100 shown may include a processor 110, an external memory interface 120, an internal memory 121, a universal serial bus (USB) interface 130, a charging management module 140, a power management module 141, a battery 142, an antenna 1, an antenna 2, a mobile communication module 150, a wireless communication module 160, an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, an earphone interface 170D, a sensor module 180, a button 190, a motor 191, an indicator 192, a camera 193, a display screen 194, and a subscriber identification module (SIM) card interface 195, etc. The sensor module 180 may include a pressure sensor 180A, a gyroscope sensor 180B, an air pressure sensor 180C, a magnetic sensor 180D, an acceleration sensor 180E, a distance sensor 180F, a proximity light sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, an ambient light sensor 180L, a bone conduction sensor 180M, etc.

[0046] It is to be understood that the structure illustrated in the embodiment of the present application does not constitute a specific limitation on the electronic device 100. In other embodiments of the present application, the electronic device 100 may include more or fewer components than shown in the figure, or combine some components, or split some components, or arrange the components differently. The components shown in the figure may be implemented in hardware, software, or a combination of software and hardware.

[0047] The processor 110 may include one or more processing units, for example, the processor 110 may include an application processor (AP), a modem processor, a graphics processor (GPU), an image signal processor (ISP), a controller, a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural-network processing unit (NPU), etc. Different processing units may be independent devices or integrated into one or more processors.

[0048] The controller can generate operation control signals according to the instruction operation code and timing signal to complete the control of instruction fetching and execution.

[0049] The processor 110 may also be provided with a memory for storing instructions and data. In some embodiments, the memory in the processor 110 is a cache memory. The memory may store instructions or data that the processor 110 has just used or cyclically used. If the processor 110 needs to use the instruction or data again, it may be directly called from the memory. This avoids repeated access, reduces the waiting time of the processor 110, and thus improves the efficiency of the system.

[0050] In some embodiments, the processor 110 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 (UART) interface, a mobile industry processor interface (MIPI), a general-purpose input / output (GPIO) interface, a subscriber identity module (SIM) interface, and / or a universal serial bus (USB) interface, etc.

[0051] The I2C interface is a bidirectional synchronous serial bus, including a serial data line (SDA) and a serial clock line (SCL). In some embodiments, the processor 110 may include multiple groups of I2C buses. The processor 110 may be coupled to the touch sensor 180K, the charger, the flash, the camera 193, etc. through different I2C bus interfaces. For example: the processor 110 may be coupled to the touch sensor 180K through the I2C interface, so that the processor 110 communicates with the touch sensor 180K through the I2C bus interface, thereby realizing the touch function of the electronic device 100.

[0052] The I2S interface can be used for audio communication. In some embodiments, the processor 110 can include multiple I2S buses. The processor 110 can be coupled to the audio module 170 via the I2S bus to achieve communication between the processor 110 and the audio module 170. In some embodiments, the audio module 170 can transmit an audio signal to the wireless communication module 160 via the I2S interface to achieve the function of answering a call through a Bluetooth headset.

[0053] The PCM interface can also be used for audio communication, sampling, quantizing and encoding analog signals. In some embodiments, the audio module 170 and the wireless communication module 160 can be coupled via a PCM bus interface. In some embodiments, the audio module 170 can also transmit audio signals to the wireless communication module 160 via the PCM interface to realize the function of answering calls via a Bluetooth headset. Both the I2S interface and the PCM interface can be used for audio communication.

[0054] The UART interface is a universal serial data bus for asynchronous communication. The bus can be a bidirectional communication bus. It converts the data to be transmitted between serial communication and parallel communication. In some embodiments, the UART interface is generally used to connect the processor 110 and the wireless communication module 160. For example, the processor 110 communicates with the Bluetooth module in the wireless communication module 160 through the UART interface to implement the Bluetooth function. In some embodiments, the audio module 170 can transmit an audio signal to the wireless communication module 160 through the UART interface to implement the function of playing music through a Bluetooth headset.

[0055] The MIPI interface can be used to connect the processor 110 with peripheral devices such as the display screen 194 and the camera 193. The MIPI interface includes a camera serial interface (CSI), a display serial interface (DSI), etc. In some embodiments, the processor 110 and the camera 193 communicate via the CSI interface to implement the shooting function of the electronic device 100. The processor 110 and the display screen 194 communicate via the DSI interface to implement the display function of the electronic device 100.

[0056] The GPIO interface can be configured by software. The GPIO interface can be configured as a control signal or as a data signal. In some embodiments, the GPIO interface can be used to connect the processor 110 with the camera 193, the display 194, the wireless communication module 160, the audio module 170, the sensor module 180, etc. The GPIO interface can also be configured as an I2C interface, an I2S interface, a UART interface, a MIPI interface, etc.

[0057] The USB interface 130 is an interface that complies with the USB standard specification, and specifically can be a Mini USB interface, a Micro USB interface, a USB Type C interface, etc. The USB interface 130 can be used to connect a charger to charge the electronic device 100, and can also be used to transfer data between the electronic device 100 and a peripheral device. It can also be used to connect headphones to play audio through the headphones. The interface can also be used to connect other electronic devices, such as AR devices, etc.

[0058] It is understandable that the interface connection relationship between the modules illustrated in the embodiment of the present application is only a schematic illustration and does not constitute a structural limitation on the electronic device 100. In other embodiments of the present application, the electronic device 100 may also adopt different interface connection methods in the above embodiments, or a combination of multiple interface connection methods.

[0059] The charging management module 140 is used to receive charging input from a charger. The charger may be a wireless charger or a wired charger. In some wired charging embodiments, the charging management module 140 may receive charging input from a wired charger through the USB interface 130. In some wireless charging embodiments, the charging management module 140 may receive wireless charging input through a wireless charging coil of the electronic device 100. While the charging management module 140 is charging the battery 142, it may also power the electronic device through the power management module 141.

[0060] The power management module 141 is used to connect the battery 142, the charging management module 140 and the processor 110. The power management module 141 receives input from the battery 142 and / or the charging management module 140, and supplies power to the processor 110, the internal memory 121, the display screen 194, the camera 193, and the wireless communication module 160. The power management module 141 can also be used to monitor parameters such as battery capacity, battery cycle number, battery health status (leakage, impedance), etc. In some other embodiments, the power management module 141 can also be set in the processor 110. In other embodiments, the power management module 141 and the charging management module 140 can also be set in the same device.

[0061] The wireless communication function of the electronic device 100 can be implemented through the antenna 1, the antenna 2, the mobile communication module 150, the wireless communication module 160, the modem processor and the baseband processor.

[0062] Antenna 1 and antenna 2 are used to transmit and receive electromagnetic wave signals. Each antenna in electronic device 100 can be used to cover a single or multiple communication frequency bands. Different antennas can also be reused to improve the utilization of antennas. For example, antenna 1 can be reused as a diversity antenna for a wireless local area network. In some other embodiments, the antenna can be used in combination with a tuning switch.

[0063] The mobile communication module 150 can provide solutions for wireless communications including 2G / 3G / 4G / 5G, etc., applied to the electronic device 100. The mobile communication module 150 may include at least one filter, a switch, a power amplifier, a low noise amplifier (LNA), etc. The mobile communication module 150 can receive electromagnetic waves from the antenna 1, and filter, amplify, and process the received electromagnetic waves, and transmit them to the modulation and demodulation processor for demodulation. The mobile communication module 150 can also amplify the signal modulated by the modulation and demodulation processor, and convert it into electromagnetic waves for radiation through the antenna 1. In some embodiments, at least some of the functional modules of the mobile communication module 150 can be set in the processor 110. In some embodiments, at least some of the functional modules of the mobile communication module 150 can be set in the same device as at least some of the modules of the processor 110.

[0064] The modem processor may include a modulator and a demodulator. Among them, the modulator is used to modulate the low-frequency baseband signal to be sent into a medium-high frequency signal. The demodulator is used to demodulate the received electromagnetic wave signal into a low-frequency baseband signal. The demodulator then transmits the demodulated low-frequency baseband signal to the baseband processor for processing. After the low-frequency baseband signal is processed by the baseband processor, it is passed to the application processor. The application processor outputs a sound signal through an audio device (not limited to a speaker 170A, a receiver 170B, etc.), or displays an image or video through a display screen 194. In some embodiments, the modem processor may be an independent device. In other embodiments, the modem processor may be independent of the processor 110 and be set in the same device as the mobile communication module 150 or other functional modules.

[0065] The wireless communication module 160 can provide wireless communication solutions including wireless local area networks (WLAN) (such as wireless fidelity (Wi-Fi) networks), bluetooth (BT), global navigation satellite system (GNSS), frequency modulation (FM), near field communication (NFC), infrared (IR), etc., which are applied to the electronic device 100. The wireless communication module 160 can be one or more devices integrating at least one communication processing module. The wireless communication module 160 receives electromagnetic waves via the antenna 2, modulates the frequency of the electromagnetic wave signal and performs filtering, and sends the processed signal to the processor 110. The wireless communication module 160 can also receive the signal to be sent from the processor 110, modulate the frequency of it, amplify it, and convert it into electromagnetic waves for radiation through the antenna 2.

[0066] In some embodiments, the antenna 1 of the electronic device 100 is coupled to the mobile communication module 150, and the antenna 2 is coupled to the wireless communication module 160, so that the electronic device 100 can communicate with the network and other devices through wireless communication technology. The wireless communication technology may include global system for mobile communications (GSM), general packet radio service (GPRS), code division multiple access (CDMA), wideband code division multiple access (WCDMA), time-division code division multiple access (TD-SCDMA), long term evolution (LTE), BT, GNSS, WLAN, NFC, FM, and / or IR technology. The GNSS may include a global positioning system (GPS), a global navigation satellite system (GLONASS), a Beidou navigation satellite system (BDS), a quasi-zenith satellite system (QZSS) and / or a satellite based augmentation system (SBAS).

[0067] The electronic device 100 implements the display function through a GPU, a display screen 194, and an application processor. The GPU is a microprocessor for image processing, which connects the display screen 194 and the application processor. The GPU is used to perform mathematical and geometric calculations for graphics rendering. The processor 110 may include one or more GPUs that execute program instructions to generate or change display information.

[0068] The display screen 194 is used to display images, videos, etc. The display screen 194 includes a display panel. The display panel can be 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), a flexible light-emitting diode (FLED), Miniled, MicroLed, Micro-oLed, a quantum dot light-emitting diode (QLED), etc. In some embodiments, the electronic device 100 may include 1 or N display screens 194, where N is a positive integer greater than 1.

[0069] The electronic device 100 can realize the shooting function through ISP, camera 193, video codec, GPU, display screen 194 and application processor.

[0070] ISP is used to process the data fed back by camera 193. For example, when taking a photo, the shutter is opened, and the light is transmitted to the camera photosensitive element through the lens. The light signal is converted into an electrical signal, and the camera photosensitive element transmits the electrical signal to ISP for processing and converts it into an image visible to the naked eye. ISP can also perform algorithm optimization on the noise, brightness, and skin color of the image. ISP can also optimize the exposure, color temperature and other parameters of the shooting scene. In some embodiments, ISP can be set in camera 193.

[0071] The camera 193 is used to capture still images or videos. The object generates an optical image through the lens and projects it onto the photosensitive element. The photosensitive element can be a charge coupled device (CCD) or a complementary metal-oxide-semiconductor (CMOS) phototransistor. The photosensitive element converts the optical signal into an electrical signal, and then passes the electrical signal to the ISP to be converted 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 an image signal in a standard RGB, YUV or other format. In some embodiments, the electronic device 100 may include 1 or N cameras 193, where N is a positive integer greater than 1.

[0072] The digital signal processor is used to process digital signals, and can process not only digital image signals but also other digital signals. For example, when the electronic device 100 is selecting a frequency point, the digital signal processor is used to perform Fourier transform on the frequency point energy.

[0073] Video codecs are used to compress or decompress digital videos. The electronic device 100 may support one or more video codecs. Thus, the electronic device 100 may play or record videos in a variety of coding formats, such as Moving Picture Experts Group (MPEG) 1, MPEG2, MPEG3, MPEG4, etc.

[0074] NPU is a neural network (NN) computing processor. By drawing on the structure of biological neural networks, such as the transmission mode between neurons in the human brain, it can quickly process input information and can also continuously self-learn. Through NPU, applications such as intelligent cognition of electronic device 100 can be realized, such as image recognition, face recognition, voice recognition, text understanding, etc.

[0075] The external memory interface 120 can be used to connect an external memory card, such as a Micro SD card, to expand the storage capacity of the electronic device 100. The external memory card communicates with the processor 110 through the external memory interface 120 to implement a data storage function, such as storing music, video and other files in the external memory card.

[0076] The internal memory 121 can be used to store computer executable program codes, which include instructions. The internal memory 121 may include a program storage area and a data storage area. Among them, the program storage area may store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc. The data storage area may store data created during the use of the electronic device 100 (such as audio data, a phone book, etc.), etc. In addition, the internal memory 121 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, a universal flash storage (UFS), etc. The processor 110 executes various functional applications and data processing of the electronic device 100 by running instructions stored in the internal memory 121, and / or instructions stored in a memory provided in the processor.

[0077] The electronic device 100 can implement audio functions such as music playing and recording through the audio module 170, the speaker 170A, the receiver 170B, the microphone 170C, the headphone jack 170D, and the application processor.

[0078] The audio module 170 is used to convert digital audio information into analog audio signal output, and is also used to convert analog audio input into digital audio signals. The audio module 170 can also be used to encode and decode audio signals. In some embodiments, the audio module 170 can be arranged in the processor 110, or some functional modules of the audio module 170 can be arranged in the processor 110.

[0079] The speaker 170A, also called a "speaker", is used to convert an audio electrical signal into a sound signal. The electronic device 100 can listen to music or listen to a hands-free call through the speaker 170A.

[0080] The receiver 170B, also called a "earpiece", is used to convert audio electrical signals into sound signals. When the electronic device 100 receives a call or voice message, the voice can be received by placing the receiver 170B close to the human ear.

[0081] Microphone 170C, also called "microphone" or "microphone", is used to convert sound signals into electrical signals. When making a call or sending a voice message, the user can speak by putting their mouth close to microphone 170C to input the sound signal into microphone 170C. The electronic device 100 can be provided with at least one microphone 170C. In other embodiments, the electronic device 100 can be provided with two microphones 170C, which can not only collect sound signals but also realize noise reduction function. In other embodiments, the electronic device 100 can also be provided with three, four or more microphones 170C to collect sound signals, reduce noise, identify the sound source, realize directional recording function, etc.

[0082] The earphone interface 170D is used to connect a wired earphone and can be a USB interface 130 or a 3.5 mm open mobile terminal platform (OMTP) standard interface or a cellular telecommunications industry association of the USA (CTIA) standard interface.

[0083] The pressure sensor 180A is used to sense the pressure signal and can convert the pressure signal into an electrical signal. In some embodiments, the pressure sensor 180A can be set on the display screen 194. There are many types of pressure sensors 180A, such as resistive pressure sensors, inductive pressure sensors, capacitive pressure sensors, etc. The capacitive pressure sensor can be a parallel plate including at least two conductive materials. When a force acts on the pressure sensor 180A, the capacitance between the electrodes changes. The electronic device 100 determines the intensity of the pressure according to the change in capacitance. When a touch operation acts on the display screen 194, the electronic device 100 detects the touch operation intensity according to the pressure sensor 180A. The electronic device 100 can also calculate the touch position according to the detection signal of the pressure sensor 180A. In some embodiments, touch operations acting on the same touch position but with different touch operation intensities can correspond to different operation instructions. For example: when a touch operation with a touch operation intensity less than the first pressure threshold acts on the short message application icon, an instruction to view the short message is executed. When a touch operation with a touch operation intensity greater than or equal to the first pressure threshold acts on the short message application icon, an instruction to create a new short message is executed.

[0084] The gyro sensor 180B can be used to determine the motion posture of the electronic device 100. In some embodiments, the angular velocity of the electronic device 100 around three axes (i.e., x, y, and z axes) can be determined by the gyro sensor 180B. The gyro sensor 180B can be used for anti-shake shooting. For example, when the shutter is pressed, the gyro sensor 180B detects the angle of the electronic device 100 shaking, calculates the distance that the lens module needs to compensate based on the angle, and allows the lens to offset the shaking of the electronic device 100 through reverse movement to achieve anti-shake. The gyro sensor 180B can also be used for navigation and somatosensory game scenes.

[0085] The air pressure sensor 180C is used to measure air pressure. In some embodiments, the electronic device 100 calculates the altitude through the air pressure value measured by the air pressure sensor 180C to assist positioning and navigation.

[0086] The magnetic sensor 180D includes a Hall sensor. The electronic device 100 can use the magnetic sensor 180D to detect the opening and closing of the flip leather case. In some embodiments, when the electronic device 100 is a flip phone, the electronic device 100 can detect the opening and closing of the flip cover according to the magnetic sensor 180D. Then, according to the detected opening and closing state of the leather case or the opening and closing state of the flip cover, the flip cover can be automatically unlocked.

[0087] The acceleration sensor 180E can detect the magnitude of the acceleration of the electronic device 100 in all directions (generally three axes). When the electronic device 100 is stationary, the magnitude and direction of gravity can be detected. It can also be used to identify the posture of the electronic device and is applied to applications such as horizontal and vertical screen switching and pedometers.

[0088] The distance sensor 180F is used to measure the distance. The electronic device 100 can measure the distance by infrared or laser. In some embodiments, when shooting a scene, the electronic device 100 can use the distance sensor 180F to measure the distance to achieve fast focusing.

[0089] The proximity light sensor 180G may include, for example, a light emitting diode (LED) and a light detector, such as a photodiode. The light emitting diode may be an infrared light emitting diode. The electronic device 100 emits infrared light outward through the light emitting diode. The electronic device 100 uses a photodiode to detect infrared reflected light from nearby objects. When sufficient reflected light is detected, it can be determined that there is an object near the electronic device 100. When insufficient reflected light is detected, the electronic device 100 can determine that there is no object near the electronic device 100. The electronic device 100 can use the proximity light sensor 180G to detect that the user holds the electronic device 100 close to the ear to talk, so as to automatically turn off the screen to save power. The proximity light sensor 180G can also be used in leather case mode and pocket mode to automatically unlock and lock the screen.

[0090] The ambient light sensor 180L is used to sense the ambient light brightness. The electronic device 100 can adaptively adjust the brightness of the display screen 194 according to the perceived ambient light brightness. The ambient light sensor 180L can also be used to automatically adjust the white balance when taking pictures. The ambient light sensor 180L can also cooperate with the proximity light sensor 180G to detect whether the electronic device 100 is in a pocket to prevent accidental touches.

[0091] The fingerprint sensor 180H is used to collect fingerprints. The electronic device 100 can use the collected fingerprint characteristics to implement fingerprint unlocking, access application locks, fingerprint photography, fingerprint call answering, etc.

[0092] The temperature sensor 180J is used to detect temperature. In some embodiments, the electronic device 100 uses the temperature detected by the temperature sensor 180J to execute a temperature processing strategy. For example, when the temperature reported by the temperature sensor 180J exceeds a threshold, the electronic device 100 reduces the performance of a processor located near the temperature sensor 180J to reduce power consumption and implement thermal protection. In other embodiments, when the temperature is lower than another threshold, the electronic device 100 heats the battery 142 to avoid abnormal shutdown of the electronic device 100 due to low temperature. In other embodiments, when the temperature is lower than another threshold, the electronic device 100 performs a boost on the output voltage of the battery 142 to avoid abnormal shutdown caused by low temperature.

[0093] The touch sensor 180K is also called a "touch control device". The touch sensor 180K can be set on the display screen 194. The touch sensor 180K and the display screen 194 form a touch screen, also called a "touch control screen". The touch sensor 180K is used to detect touch operations acting on or near it. The touch sensor can pass the detected touch operation to the application processor to determine the type of touch event. Visual output related to the touch operation can be provided through the display screen 194. In other embodiments, the touch sensor 180K can also be set on the surface of the electronic device 100, which is different from the position of the display screen 194.

[0094] The bone conduction sensor 180M can obtain a vibration signal. In some embodiments, the bone conduction sensor 180M can obtain a vibration signal of a vibrating bone block of the vocal part of the human body. The bone conduction sensor 180M can also contact the human pulse to receive a blood pressure beat signal. In some embodiments, the bone conduction sensor 180M can also be set in an earphone and combined into a bone conduction earphone. The audio module 170 can parse out a voice signal based on the vibration signal of the vibrating bone block of the vocal part obtained by the bone conduction sensor 180M to realize a voice function. The application processor can parse the heart rate information based on the blood pressure beat signal obtained by the bone conduction sensor 180M to realize a heart rate detection function.

[0095] The key 190 includes a power key, a volume key, etc. The key 190 may be a mechanical key or a touch key. The electronic device 100 may receive key input and generate key signal input related to user settings and function control of the electronic device 100.

[0096] Motor 191 can generate vibration prompts. Motor 191 can be used for incoming call vibration prompts, and can also be used for touch vibration feedback. For example, touch operations acting on different applications (such as taking pictures, audio playback, etc.) can correspond to different vibration feedback effects. For touch operations acting on different areas of the display screen 194, motor 191 can also correspond to different vibration feedback effects. Different application scenarios (for example: time reminders, receiving messages, alarm clocks, games, etc.) can also correspond to different vibration feedback effects. The touch vibration feedback effect can also support customization.

[0097] Indicator 192 may be an indicator light, which may be used to indicate charging status, power changes, messages, missed calls, notifications, etc.

[0098] The SIM card interface 195 is used to connect a SIM card. The SIM card can be connected to and separated from the electronic device 100 by inserting it into the SIM card interface 195 or pulling it out from the SIM card interface 195. The electronic device 100 can support 1 or N SIM card interfaces, where N is a positive integer greater than 1. The SIM card interface 195 can support Nano SIM cards, Micro SIM cards, SIM cards, and the like. Multiple cards can be inserted into the same SIM card interface 195 at the same time. The types of the multiple cards can be the same or different. The SIM card interface 195 can also be compatible with different types of SIM cards. The SIM card interface 195 can also be compatible with external memory cards. The electronic device 100 interacts with the network through the SIM card to implement functions such as calls and data communications. In some embodiments, the electronic device 100 uses an eSIM, i.e., an embedded SIM card. The eSIM card can be embedded in the electronic device 100 and cannot be separated from the electronic device 100.

[0099] Figure 2 Schematic diagram of the structure of an electronic device applicable to the charging control method provided in this application. Figure 2 As shown, the electronic device includes a power supply bus, a charging IC chip, a charging control device, a fuel gauge, a current sensing resistor and a battery. The battery is mounted on a battery board, and the battery is connected to other parts of the circuit through a BTB connector.

[0100] Figure 2 The charging IC chip in the embodiment may be, for example, a buck charger IC. Figure 2 The charging control device in the embodiment may be, for example, a system on chip (SoC). It should be understood that the buck charger IC is only one possible form of a charging IC chip, and the SoC is only one possible form of a charging control device, and the present application includes but is not limited to the above.

[0101] The voltage on the power bus can be measured with V bus To express, the battery voltage measured by the charging IC chip can be expressed as V bat_buck To express it, the voltage measured by the fuel gauge across the battery’s BTB connector can be expressed as V bat_btb The actual voltage of the battery can be expressed as V bat_real To express.

[0102] When the device is charging, the charger will first transmit the power to the charging IC chip through the power bus. The charging IC chip will divide the power into two parts, one for charging the battery and the other for maintaining the operation of the SoC. During the charging process, the fuel gauge is connected to the BTB connector of the battery to monitor the voltage across the BTB connector of the battery; at the same time, the fuel gauge is also connected to the two ends of the current sensing resistor, which is a resistor with a certain resistance value. The fuel gauge monitors the voltage across the current sensing resistor, calculates the charging current of the battery through the voltage across the current sensing resistor, and comprehensively judges the battery power based on the integral of the voltage and current across the BTB connector of the battery. The fuel gauge is connected to the SoC to notify the SoC of charging information including the battery voltage, power, and charging current.

[0103] When the device is charging, due to the chemical characteristics of the battery, the battery will generate polarization impedance. This polarization impedance will cause the battery to generate polarization voltage, making the voltage monitored by the charging IC chip greater than the actual voltage of the battery. When the battery charging reaches the cut-off condition, the charging will stop. Since there is no charging current, the polarization voltage of the battery will gradually disappear, causing the voltage measured at both ends of the BTB connector to drop. Since the voltage measured at both ends of the BTB connector is the input parameter used by the fuel gauge to calculate the power, the voltage drop will cause the power calculated by the voltage gauge to drop. Users may think that the battery power drops too quickly and the battery life is not long, which may reduce the user's experience of using the device.

[0104] In view of this, the present application provides a charging control method, which monitors the parameters collected by the fuel meter connected to both ends of the BTB connector after the fuel meter determines that the battery is full, and controls the charging IC chip to recharge the battery when the voltage collected by the fuel meter is less than the first preset threshold or the interval between the time when the power collected by the fuel meter is less than the second preset threshold and the time when charging is cut off is a preset time. By introducing a preset time, the preset time can be obtained by measuring the change of the power over time after the battery charging is cut off, so that the battery power failure of the electronic device can be detected in time, and then the battery can be recharged as soon as possible to make the battery charge more fully, thereby extending the battery life and improving the user experience.

[0105] Figure 3 is a schematic flow chart of a charging control method provided in an embodiment of the present application. The method may include steps 310 to 320, which may be performed by a charging control device, for example, Figure 1 The processor 110 or Figure 2 The SoC in the method 300 (ie, an example of a charging control device) is not limited in the present application. The following is a detailed description of each step in the method 300.

[0106] In step 310, when charging of the battery of the electronic device is terminated and the charger is in place, the parameters collected by the power meter connected to both ends of the BTB connector of the battery are monitored.

[0107] It should be understood that this solution is a charging control method, so it should be executed under the premise that the charger is in place. Whether the charger is in place can be determined based on the following conditions: Figure 2 The voltage V on the power bus is shown in bus To judge. If the voltage V bus is zero, the charger is not in place; if the voltage V bus If not zero, the charger is in place.

[0108] During the battery charging process, the charging IC chip will monitor the battery voltage and charging current in real time. The voltage monitored at the charging IC chip will gradually rise, and the charging current will gradually decrease. When the battery is nearly full, the voltage monitored at the charging IC chip will be close to the cut-off voltage, and the charging current will be close to the cut-off current. The voltage monitored at the charging IC chip includes the voltage of the battery itself, the voltage caused by the impedance of a part of the wire, and the polarization voltage caused by the polarization impedance inside the battery. The cut-off voltage and cut-off current here can be used to determine the preset values ​​for charging cut-off.

[0109] However, whether the charging cutoff is determined solely by the cutoff voltage or solely by the cutoff current, there will be a large error. Therefore, optionally, the charging cutoff condition is that the voltage monitored at the charging IC chip rises to the cutoff voltage and the charging current drops to the cutoff current, and both conditions are met at the same time.

[0110] In one example, the cut-off voltage is 4.45 volts and the cut-off current is 200 milliamperes. When the voltage monitored at the charging IC chip rises to 4.45 volts and the charging current drops to 200 milliamperes, the cut-off condition for charging the electronic device is reached.

[0111] Optionally, when charging reaches the cut-off condition, the charging IC chip will send a cut-off notification to indicate that charging of the battery is cut off. The charging control device can receive the charging cut-off notification from the charging IC chip and then stop charging according to the instruction of the charging cut-off notification.

[0112] The charging IC chip of the electronic device can control the disconnection or closing of the charging circuit, so when the charging reaches the cut-off condition, the charging IC chip can determine the charging cut-off, disconnect the charging circuit, and stop charging the battery. Here, the charging IC chip can also send a charging cut-off notification to the charging control device, and the charging control device further controls the charging cut-off according to the charging cut-off notification. In existing electronic devices, the charging IC chip will also send a charging cut-off notification to the charging control device after determining that the charging is cut-off, but the charging cut-off can be controlled by the charging IC chip itself. After the charging is cut-off, the electricity entering the electronic device from the charger can be used to power the rest of the parts except the battery.

[0113] After determining that the battery charging is terminated, the parameters collected by the fuel gauge are monitored. The parameters collected by the fuel gauge may include: the voltage across the BTB connector of the battery, the charging current of the battery, and the battery power.

[0114] Optionally, monitoring the parameters collected by the electricity meter includes: acquiring the parameters from the electricity meter to monitor the acquired parameters.

[0115] The charging control device may obtain parameters from the electricity meter in real time, or may obtain parameters from the electricity meter periodically, for example, by using a timed polling method. This application does not limit this.

[0116] By monitoring the parameters collected by the fuel gauge, changes in the battery can be discovered in a timely manner, and the battery can be recharged in a timely manner when the recharging conditions are met.

[0117] The parameters collected by the above monitoring power meter can be used to determine whether the recharging conditions are met.

[0118] In step 320, when the recharging condition is met, the charging IC chip of the electronic device is controlled to recharge the battery.

[0119] Since the polarization impedance generated by the battery during the charging process will cause the fuel gauge to judge the battery power to deviate, it is necessary to wait until the polarization impedance of the battery is eliminated as much as possible before recharging the battery. Here, whether the polarization impedance of the battery is eliminated can be judged by the recharging conditions.

[0120] The recharging condition includes: the interval between the time when the voltage collected by the power meter is less than the first preset threshold or the power collected by the power meter is less than the second preset threshold and the time when charging is cut off is a preset time length.

[0121] In a specific implementation, the charging control device can determine whether the voltage collected by the power meter is less than the first preset threshold after waiting for a preset time from the end of charging; or whether the power collected by the power meter is less than the second preset threshold. If the voltage collected by the power meter is less than the first preset threshold, or the power collected by the power meter is less than the second preset threshold, it can be considered that the recharging condition is met.

[0122] The preset duration here can be obtained by measuring the change of battery power over time after the battery charging is terminated. If the battery power drops rapidly in a short period of time, it may be due to the drop in polarization voltage caused by polarization impedance. The period of rapid power drop can be determined as the preset duration.

[0123] For example, Table 1 shows the parameters measured by the fuel gauge connected to both ends of the BTB connector within 5 minutes after the charging reaches the cut-off condition.

[0124] Table 1

[0125]

[0126]

[0127] From Table 1, it can be seen that within 5 minutes after the charging is cut off, the charging current is 0A. The battery voltage is 4.45V at 0 minutes, 4.44V at 1 minute, 4.43V at 2 minutes and 3 minutes, and 4.42V at 4 minutes and 5 minutes. The battery capacity is 100% at 0 minutes, 99% at 1 minute, 98% at 2 minutes, and 97% at 3 minutes to 5 minutes.

[0128] As can be seen from Table 1, the battery power drops rapidly in the first 3 minutes and stabilizes at 97% after 3 minutes. This may be due to the fact that the polarization impedance of the battery drops rapidly in the first 3 minutes, while the polarization impedance remains stable and no longer drops after 3 minutes. Therefore, the preset time can be set to 3 minutes.

[0129] If the battery starts to lose power 3 minutes after charging is cut off, the preset time can be set to 3 minutes. After waiting for 3 minutes after charging is cut off, if the voltage collected by the power meter is less than the first preset threshold or the power collected by the power meter is less than the second preset threshold, it can be considered that the recharging condition is met. In this way, the battery power loss can be detected in a shorter time after charging is cut off, and the battery can be recharged as soon as possible to make the battery charge more fully, thereby extending the battery life and improving the user experience.

[0130] It should be understood that the data shown in Table 1 are only examples. The power consumption of devices of different brands and models may decrease over time in different ways. Device manufacturers can set the above preset time by measuring the device before the device leaves the factory, so that the electronic device can recharge the battery as soon as possible when the power consumption decreases due to the decrease of polarization impedance.

[0131] For different electronic devices, the characteristics of their batteries, such as power, charging current, battery impedance or battery voltage, are not necessarily exactly the same. Therefore, the polarization impedance generated by different batteries when charging is not necessarily the same, and the time required for the polarization impedance of the battery to be eliminated is not necessarily the same. Before leaving the factory, the electronic device can determine the time required for the polarization impedance to be eliminated through charging tests, and then determine the preset time based on the time required for the polarization impedance to be eliminated.

[0132] After the battery charging is cut off, if you do not wait for this preset time and directly start to determine whether to recharge, the following situation may occur: after the battery charging is cut off, the polarization impedance drops quickly, and the voltage collected by the fuel gauge, that is, the voltage at both ends of the BTB connector of the battery, will drop, and soon it will be less than the first preset threshold, and the battery will start to be recharged. After the recharging starts, the polarization impedance will soon start to rise, and the voltage monitored at the charging IC chip will rise, and soon it will reach the cutoff condition. In this way, the battery may frequently switch back and forth between charging and discharging over a period of time, which may easily cause damage to the battery. Therefore, the recharging condition requires waiting for a preset time after the charging is cut off, which can avoid the above situation and minimize damage to the battery.

[0133] In addition, setting a preset time length makes software implementation relatively simple, making it easier for the charging control device to determine whether to recharge.

[0134] The recharging conditions, in addition to waiting for a preset time after the charging is cut off, also include that the voltage collected by the fuel meter is less than the first preset threshold, or the amount of electricity collected by the fuel meter is less than the second preset threshold. If the voltage collected by the fuel meter, that is, the voltage at both ends of the BTB connector of the battery is less than the first preset threshold, it can represent that a part of the polarization impedance has been eliminated, and the voltage collected by the fuel meter will also decrease accordingly. The amount of electricity collected by the fuel meter can be obtained by measuring the charging current and integrating the charging current. If the amount of electricity collected by the fuel meter is less than the second preset threshold, it can represent that the battery was not fully charged before the charging was cut off.

[0135] In one example, the preset duration is 3 minutes. When the battery is fully charged, the voltage across the BTB connector of the battery is 4.45 volts, the first preset threshold is 4.42 volts, and when the battery is fully charged, the battery capacity is 5000 mAh, and the second preset threshold is 4800 mAh. After waiting for 3 minutes after the charging is cut off, if the voltage collected by the fuel gauge, that is, the voltage across the BTB connector of the battery is less than 4.42 volts, it can be said that the polarization voltage that has been eliminated at this time is greater than 30 millivolts. After waiting for 3 minutes after the charging is cut off, if the power collected by the fuel gauge is less than 4800 mAh, it can be said that before the charging is cut off, the power charged in the battery has not reached the level that can fully charge the battery. If any of the above two conditions is met, the battery can be recharged.

[0136] Optionally, when the recharging condition is met, the difference between the voltage collected from the charging IC chip and the charging cut-off voltage is less than 100 millivolts.

[0137] The voltage collected by the charging IC chip here is different from the voltage collected by the above-mentioned fuel gauge, that is, the voltage at both ends of the BTB connector of the battery. The voltage collected by the charging IC chip has a voltage caused by the impedance of the wire compared to the voltage collected by the fuel gauge. Therefore, the voltage collected by the charging IC chip is generally slightly larger than the voltage collected by the fuel gauge. However, because the impedance of the wire is very small, the two are very close in magnitude.

[0138] In existing electronic devices, when the recharging condition is met, the difference between the voltage collected by the charging IC chip and the cut-off voltage is generally 100 millivolts or 200 millivolts. In this solution, the difference between the voltage collected by the charging IC chip and the cut-off voltage can be less than 100 millivolts. This difference is smaller, the time interval between the charging cut-off and the recharging is shorter, and the recharging condition can be met faster, which is conducive to the battery being fully charged as soon as possible.

[0139] Controlling the charging IC chip of the electronic device to recharge the battery may be to send a recharging instruction to the charging IC chip of the electronic device to trigger the charging IC chip to turn on the charging path connected to the battery to recharge the battery until the battery reaches the charging cut-off condition again.

[0140] The charging IC chip of the electronic device can control the disconnection or closing of the charging circuit. Therefore, if the battery needs to be recharged, a recharging instruction can be sent to the charging IC chip to trigger the charging IC chip to close the charging circuit and recharge the battery.

[0141] It should be understood that the cut-off condition for recharging is the same as the cut-off condition for normal charging, and will not be described in detail here.

[0142] The charging current during normal charging will gradually decrease, that is, it will gradually decrease from a larger current to a current close to the cut-off current, for example, from 1A to 200mA. However, unlike normal charging, the current used to recharge the battery is a small current. For example, the current used to recharge the battery is the minimum cut-off current of the battery. This can reduce the polarization voltage caused by the polarization impedance of the battery as much as possible, so that the battery can be truly fully charged after this recharging.

[0143] It should be understood that the minimum cut-off current of the battery can be determined according to the battery specification. For example, the minimum cut-off current of the battery is 0.025C, where C represents the current of the nominal capacity of the battery. For example, when the battery capacity is 5000 mAh, the current of the nominal capacity of the battery is 5000 mAh, and the minimum cut-off current can be 125 mAh.

[0144] It can be seen that the current used to recharge the battery is a current of substantially constant magnitude. Using a current of substantially constant magnitude for recharging facilitates calculation of the amount of electricity charged into the battery during the recharging process, thereby facilitating calculation of the amount of electricity collected by the electricity meter, and facilitating knowledge of the battery charging status.

[0145] For different electronic devices, the current size for recharging the battery may be different. This current size may be related to the parameter configuration of the charging IC chip of the electronic device. The parameters may include: cut-off current, cut-off voltage and pre-set maximum charging current, etc.

[0146] As an example, the parameter configuration of the charging IC chip 1 is that the cut-off current is 50 mA, the cut-off voltage is 3.9 V, and the preset maximum charging current is 1 A. For the charging IC chip 1, the current for recharging the battery can be 50 mA.

[0147] As another example, the parameters of the charging IC chip 2 are configured as follows: the cut-off current is 100 mA, the cut-off voltage is 3.9 V, and the preset maximum charging current is 2 A. For the charging IC chip 1, the current for recharging the battery can be 100 mA.

[0148] As another example, the parameters of the charging IC chip 3 are configured as follows: the cut-off current is 60 mA, the cut-off voltage is 3.8 V, and the preset maximum charging current is 3 A. For this charging IC chip, the current for recharging the battery can be 60 mA.

[0149] The polarization impedance of the battery is related to the charging current. In order to minimize the polarization impedance of the battery, the current used to recharge the battery should be relatively small compared to the current used to charge normally. The current used to recharge the battery may be different for different electronic devices. For electronic devices with smaller battery capacity, such as smart wearable devices such as smart bracelets or smart watches, the cut-off current and cut-off voltage are both small, so the current used to recharge the battery is also small. For electronic devices with larger battery capacity, such as tablets or laptops, the cut-off current and cut-off voltage are both large, so the current used to recharge the battery is also large.

[0150] Generally speaking, the current for recharging the battery is between greater than 50 mA and less than 800 mA. Within this range, the current for recharging most electronic devices can be adapted.

[0151] Based on the above method, after charging is cut off, wait for a preset period of time, and then further determine whether the recharging condition is met. If the recharging condition is met, control the charging IC chip of the electronic device to recharge the battery. The recharging condition includes: the interval between the time when the voltage collected by the power meter is less than the first preset threshold or the time when the power collected by the power meter is less than the second preset threshold and the time when charging is cut off is a preset period of time. By introducing the preset period of time, the power failure of the electronic device can be detected in a shorter time after charging is cut off, and the battery can be recharged as soon as possible to make the battery charge more fully, thereby extending the battery life and improving the user experience. Therefore, the impact of battery polarization can be minimized, so that the battery can be charged more fully.

[0152] Figure 4 It is a schematic diagram of a possible embodiment of the charging control method provided in the embodiment of the present application.

[0153] When the charging of the electronic device reaches the cut-off condition, it is determined in real time whether the charger is in place. If the charger is not in place, the current charging is stopped; if the charger is always in place, it is determined whether the recharging condition is met.

[0154] In this embodiment, the preset time is 3 minutes, the first preset threshold is 4.42V, and the second preset threshold is 4800mAh. The recharging condition is: the time interval between the time when the voltage collected by the power meter is less than 4.42V or the power collected by the power meter is less than 4800mAh and the charging cutoff is 3 minutes.

[0155] If the recharging condition is not met, the charging is terminated; if the recharging condition is met, the recharging current is used for charging, and the recharging current may be 500 mA, for example. The charging is terminated until the termination condition is met.

[0156] Figure 5 A schematic diagram of the hardware structure of the charging control device provided in an embodiment of the present application.

[0157] like Figure 5 As shown, the device includes: a memory 501, a processor 502 and an interface circuit 503. The device may also include a display screen 504, wherein the memory 501, the processor 502, the interface circuit 503 and the display screen 504 can communicate; illustratively, the memory 501, the processor 502, the interface circuit 503 and the display screen 504 can communicate through a communication bus, the memory 501 is used to store computer execution instructions, the execution is controlled by the processor 502, and the communication is performed by the interface circuit 503, so as to realize the charging control method provided in the embodiment of the present application.

[0158] Optionally, the interface circuit 503 may also include an input circuit and / or an output circuit. Optionally, the processor 502 may include one or more CPUs, or other general-purpose processors, DSPs, application-specific integrated circuits (ASICs), etc. A general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc. The steps of the method disclosed in the present application may be directly embodied as being executed by a hardware processor, or may be executed by a combination of hardware and software modules in the processor.

[0159] In possible implementations, the computer-executable instructions in the embodiments of the present application may also be referred to as application code, which is not specifically limited in the embodiments of the present application.

[0160] The charging control device provided in the embodiment of the present application is used to execute the charging control method of the above embodiment. The technical principles and technical effects are similar and will not be repeated here.

[0161] The present application embodiment provides an electronic device, the structure of which is shown in FIG. Figure 1 The memory of the electronic device can be used to store at least one program instruction, and the processor can be used to execute at least one program instruction to implement the technical solution of the above method embodiment. Its implementation principle and technical effect are similar to those of the above method related embodiments, and will not be repeated here.

[0162] The embodiment of the present application provides a chip. The chip includes a processor, and the processor is used to call a computer program in a memory to execute the technical solution in the above embodiment. Its implementation principle and technical effect are similar to those of the above related embodiments, and will not be repeated here.

[0163] The embodiment of the present application provides a computer program product, when the computer program product is run on an electronic device, the electronic device executes the technical solution in the above embodiment. Its implementation principle and technical effect are similar to those of the above related embodiments, and will not be repeated here.

[0164] The embodiment of the present application provides a computer-readable storage medium on which program instructions are stored. When the program instructions are executed by an electronic device, the electronic device executes the technical solution of the above embodiment. Its implementation principle and technical effect are similar to those of the above related embodiments, and will not be repeated here.

[0165] The above specific implementation methods further illustrate the purpose, technical solutions and beneficial effects of the present application in detail. It should be understood that the above are only specific implementation methods of the present application and are not used to limit the protection scope of the present application. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the present application should be included in the protection scope of the present application.

Claims

1. A method for charging an electronic device, applied to a charging control device, wherein the electronic device is in a charger-in-place state, characterized in that: include: Charging a battery of the electronic device; After the charging is performed for a period of time, when the voltage monitored by the charging IC chip of the electronic device rises to a cut-off voltage and the charging current drops to a cut-off current, the charging of the battery is stopped; After charging of the battery is stopped for a period of time, the battery is recharged when a recharging condition is met, and when the recharging is turned on, the difference between the voltage of the battery collected by the charging IC chip and the charging cut-off voltage of the battery is less than 100mV; wherein the recharging condition includes: the interval between the time when the voltage collected by the power meter is less than a first preset threshold and the time when charging is cut off is a preset time length, or the interval between the time when the power collected by the power meter is less than a second preset threshold and the time when charging is cut off is a preset time length, and the preset time length is determined based on the time required for polarization impedance elimination.

2. The method according to claim 1, characterized in that The method further comprises: After charging of the battery is stopped, the parameters collected by the power meter at both ends of the board-to-board (BTB) connector connected to the battery are monitored.

3. The method according to claim 1, characterized in that The recharging of the battery comprises: Control the charging IC chip to recharge the battery.

4. The method according to claim 2, characterized in that The monitoring of the parameters collected by the power meter at both ends of the board-to-board (BTB) connector connected to the battery includes: The parameters collected by the power meter are obtained in real time from the power meter connected to both ends of the board-to-board (BTB) connector of the battery, so as to monitor the obtained parameters.

5. The method according to claim 4, characterized in that The charging IC chip controlling the electronic device to recharge the battery includes: A recharging instruction is sent to the charging IC chip of the electronic device to trigger the charging IC chip to recharge the battery until the battery reaches the charging cut-off condition again.

6. The method according to claim 1, characterized in that The current used to recharge the battery is related to the parameter configuration of the charging IC chip.

7. The method according to any one of claims 1 to 6, characterized in that The current used to recharge the battery is the minimum cutoff current of the battery.

8. The method according to claim 7, characterized in that The current I used to recharge the battery satisfies: 50 mA < I < 800 mA.

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