CN112018831B - A charging control method, charging control device and electronic equipment - Google Patents

Abstract

In the method, when the voltage at two ends of a battery is detected to be greater than or equal to a first voltage threshold, the battery is charged by using a current with a preset magnitude, namely, a constant current charging stage is entered. And then, continuously detecting the voltages at two ends of the battery, and when the voltages at two ends of the battery are detected to be more than or equal to a second voltage threshold, controlling the voltage value for charging the battery to be kept at the value of the second voltage threshold, namely entering a first constant voltage charging stage. After entering the first constant voltage charging stage, detecting the charging current of the battery, and when detecting that the charging current of the battery is smaller than or equal to a preset current threshold value, controlling the voltage value of the battery to be kept at the value of the charging cut-off voltage of the battery, namely entering the second constant voltage charging stage.

Description

A charging control method, charging control device and electronic equipment

technical field

The present application relates to the field of electronic technology, and in particular to a charging control method, a charging control device and electronic equipment.

Background technique

With the development of global information technology, electronic devices (such as smart phones, tablet computers, etc.) have completely penetrated into people's lives. However, these electronic devices use batteries (such as lithium batteries) for power supply, and when the power of the batteries is exhausted, the batteries need to be charged so that the batteries can restore their power supply capabilities.

The charging process of the battery generally includes a pre-charging phase (also called a trickle charging phase), a constant current charging phase and a constant voltage charging phase. The initial voltage of the battery that needs to be charged is generally low. In order to protect the life of the battery, when charging the battery, a small current will be used first to make the voltage of the battery meet certain conditions (for example, make the voltage of the battery greater than or equal to 3 Volt (volt, V)), this process is the pre-charge stage. After the pre-charging of the battery is completed, it enters the constant current charging stage, that is, the battery is charged with the set current. In this stage, the current is large (for example, 2 amps (ampere, A), so that the voltage of the battery can be quickly increased to the maximum voltage that the battery can withstand (for example, 4.4V). When the battery voltage is detected When it is the maximum voltage, it enters the constant voltage charging phase. In this phase, the voltage of the battery remains constant, but the charging current gradually decreases. When the charging current is less than or equal to the preset cut-off current (for example, 75 milliamps , mA), then stop charging the battery.

Since in the constant current charging stage, the current is larger, that is to say, at the moment of entering the constant voltage charging stage, the current is larger, therefore, in the constant voltage charging stage, the current is reduced from the larger current to the cut-off current. The longer the time, the longer the charging time of the battery will be.

Contents of the invention

Embodiments of the present application provide a charging control method, a charging control device, and an electronic device, so as to reduce the charging time of a battery.

In the first aspect, a charging control method is provided, which is applied to electronic equipment including batteries. In this method, when it is detected that the electronic equipment is currently being charged by the power supply equipment, the voltage at both ends of the battery is first detected. . When it is detected that the voltage at both ends of the battery is greater than or equal to a first voltage threshold, the battery is charged with a preset current, that is, enters a constant current charging stage, and the first voltage threshold is lower than the charging cut-off voltage of the battery. Then, continue to detect the voltage at both ends of the battery, when it is detected that the voltage at both ends of the battery is greater than or equal to the second voltage threshold, control the voltage value charged to the battery to keep at the value of the second voltage threshold, that is, enter the first constant In the voltage charging stage, the second voltage threshold is higher than the charging cut-off voltage of the battery. After entering the first constant voltage charging stage, the charging current of the battery is detected, and when it is detected that the charging current of the battery is less than or equal to the preset current threshold value, the voltage value of the battery charging is controlled to remain at The value of the charging cut-off voltage of the battery enters the second constant voltage charging stage, and the preset current threshold value is greater than the charging cut-off current of the battery.

In the above technical solution, two constant voltage charging stages are set to charge the battery, and in the first constant voltage charging stage, since the voltage threshold (that is, the second voltage threshold) is higher than the charging cut-off voltage of the battery, so that it should enter The battery in the constant voltage charging stage remains in the constant current charging stage, which is equivalent to prolonging the duration of the battery in the constant current charging stage, which can reduce the charging time of the battery. Moreover, a corresponding current threshold is also set in the first constant-voltage charging stage, and the current threshold is higher than the charging cut-off current of the battery. In this way, even if the charging voltage in the first constant-voltage charging stage is relatively high, due to the first The current threshold of the constant voltage charging stage is also increased, so it will not cause the problem of battery overcharging.

In a possible design, the second voltage threshold is a sum of the charging cut-off voltage and a preset unit voltage. The second voltage threshold can also be set according to usage requirements, which is not limited in this embodiment of the present application.

In a possible design, the preset current threshold value is the ratio between the preset unit voltage and the charging impedance, and the charging impedance is the voltage between the output terminal of the power supply device and the ground. impedance.

In the above technical solution, the preset current threshold is associated with the second voltage threshold, which can prolong the duration of the battery in the constant current charging phase as much as possible under the premise of avoiding battery overcharging, thereby reducing charging as much as possible. duration.

In a possible design, when the battery is being charged by the power supply device, it is also possible to determine the full charge of the battery according to the discharge capacity of the battery before being charged by the power supply device, so that the battery is currently When the electric quantity is greater than or equal to the reported full electric quantity, the electronic device is controlled to display that the battery is fully charged. Then, when it is detected that the charging current of the battery is less than or equal to the charging cut-off current of the battery, charging the battery is stopped.

In the above technical solution, the time required for the electronic device to display that the battery is fully charged is shortened through the full reporting mechanism, so that when the electronic device displays that the battery is fully charged, the electronic device can be disconnected from the power supply device, and the charging time can be further reduced .

In a possible design, the product of the discharge capacity of the battery before being charged by the power supply device and the preset percentage may be determined as the self-learning capacity of the battery, and then the self-learning capacity is compared with the The size relationship of the preset capacity, if the self-learning capacity is greater than or equal to the preset capacity of the battery, then it is determined that the reported full capacity of the battery is the product of the preset capacity and the preset percentage; Alternatively, if the self-learning capacity is less than the preset capacity of the battery, then determine that the reported full capacity of the battery is the product of the self-learning capacity and the preset percentage.

In the above technical solution, by comparing the self-learning power with the preset capacity, it is possible to determine a more appropriate full charge, to achieve accurate full charge, and to reduce the number of different electronic devices due to differences in battery capacity. The problem of large differences in charging time.

In the second aspect, the embodiment of the present application also provides an electronic device, the electronic device includes at least one processor and at least one memory; the memory is used to store one or more computer programs; when the memory stores one or more When a computer program is executed by the at least one processor, the electronic device can realize the technical solution of the first aspect and any possible design of the first aspect.

In the third aspect, the embodiment of the present application also provides a charging control device, the charging control device includes a module/unit for implementing the above-mentioned first aspect or any possible design method of the first aspect; for example, the charging The control device includes a detection module and a control module. The detection module is used to detect the voltage at both ends of the battery of the electronic device and the charging current. The control module controls the charging process of the battery according to the voltage at both ends of the battery and the charging current detected by the detection module. Take control. These modules/units can be realized by hardware, and can also be realized by executing corresponding software by hardware.

In the fourth aspect, the embodiment of the present application also provides a chip, the chip is coupled with the memory, and is used to call the computer program stored in the memory and execute the first aspect of the embodiment of the present application and any possible design technology of the first aspect Scheme; "Coupling" in the embodiments of the present application means that two components are directly or indirectly combined with each other.

In the fifth aspect, the embodiment of the present application further provides a computer-readable storage medium, the computer-readable storage medium includes a computer program, and when the computer program runs on the electronic device, the electronic device executes the first aspect of the embodiment of the present application Any possible design technical solution of the first aspect thereof.

In the sixth aspect, a program product in the embodiment of the present application includes instructions, and when the program product is run on the electronic device, the electronic device executes the first aspect of the embodiment of the present application and any possible design of the first aspect thereof. technical solutions.

For the beneficial effects of the above-mentioned second aspect to the sixth aspect and their implementation manners, reference may be made to the description of the beneficial effects of the method of the first aspect and its implementation manners.

Description of drawings

FIG. 1A is an example of an application scenario in which an electronic device 100 is charged by an external power supply according to an embodiment of the present application;

FIG. 1B is an example of an application scenario in which an electronic device 100 is charged by a mobile power supply according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a hardware structure of an example of an electronic device 100 provided in an embodiment of the present application;

Figure 3 is a block diagram of the current loop between the output current of the charging IC and the ground;

FIG. 4 is a flow chart of an example of a charging control method provided in an embodiment of the present application;

FIG. 5 is a flow chart of another example of a charging control method provided by an embodiment of the present application;

FIG. 6 is a schematic structural diagram of an example of a charging control device provided by an embodiment of the present application;

FIG. 7 is a schematic structural diagram of another example of a charging control device provided by the embodiment of the present application.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

In the following, some terms used in the embodiments of the present application are explained, so as to facilitate the understanding of those skilled in the art.

The embodiment of the present application involves two electronic devices, that is, a device to be charged and a power supply device. The power supply device (or called charging device, external power supply, etc., which is not limited in this embodiment of the present application) is connected to the charged device, and can provide the electric energy in the power supply device to the charged device. For convenience of description, a power supply device and an electronic device (that is, the device to be charged is referred to as an electronic device) are taken as examples for description below.

It should be noted that the terms used in the following embodiments are only for the purpose of describing specific embodiments, and are not intended to limit the application. As used in the specification and appended claims of this application, the singular expressions "a", "an", "said", "above", "the" and "this" are intended to also Expressions such as "one or more" are included unless the context clearly dictates otherwise. It should also be understood that in the embodiments of the present application, "one or more" refers to one, two or more than two; "and/or" describes the association relationship of associated objects, indicating that there may be three types of relationships; for example, A and/or B may mean: A exists alone, A and B exist simultaneously, and B exists alone, wherein A and B may be singular or plural. The character "is to generally indicate that the associated objects before and after are a kind of "or" relationship.

"Reference to one embodiment" or "reference to some embodiments" or the like described in this specification means that a particular feature, structure or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in other embodiments," etc. in various places in this specification are not necessarily All refer to the same embodiment, but mean "one or more but not all embodiments" unless specifically stated otherwise. The terms "including", "comprising", "having" and variations thereof mean "including but not limited to", unless specifically stated otherwise.

It should be noted that the technical solutions provided in this application can be applied in wired charging scenarios, and can also be applied in wireless charging scenarios. In the wireless charging scenario, the electronic device and the power supply device are connected wirelessly (such as wireless fidelity (Wi-Fi), Bluetooth, etc.); in the wired charging scenario, the electronic device and the power supply device line) connection. In the following, the application in the wired charging scenario is taken as an example for illustration. Of course, in the wireless charging scenario, its implementation principle is similar to that in the wired charging scenario, and will not be repeated here.

Refer to FIG. 1A-FIG. 1B, which are examples of two application scenarios provided by the embodiment of the present application. Certainly, the technical solutions of the embodiments of the present application are not limited to the application of these two application scenarios, and may also be applicable to other application scenarios, which are not limited by the embodiments of the present application.

In the scenario shown in FIG. 1A , the electronic device 100 (taking a mobile phone as an example) and the power supply device 200 (taking a mobile phone charger as an example) are included. In this scenario, after the electronic device 100 is connected to the power supply device 200, the power supply device 200 is connected to an external power source (for example, a mains power supply with a voltage of 220 volts (volt, V) and a frequency of 50 hertz (hertz, HZ)), and the power supply device 200 Power is obtained from an external power source and then provided to the electronic device 100 .

Different from FIG. 1A, in the scenario described in FIG. 1B, the power supply device 200 is a mobile power supply. In this scenario, after the electronic device 100 is connected to the power supply device 200 , the power supply device 200 may provide the electronic device 100 with the electric energy stored therein.

In this embodiment of the present application, the electronic device 100 may be a device that provides voice and/or data connectivity to a user, for example, may include a handheld device with a wireless connection function, or a processing device connected to a wireless modem.

The electronic device 100 may communicate with a core network via a radio access network (radio access network, RAN), and exchange voice and/or data with the RAN. The electronic device 100 may include user equipment (user equipment, UE), wireless terminal, mobile terminal, subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile station), remote station (remote station), access Access point (access point, AP), remote terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user agent (user agent), or user equipment (user device), etc. Alternatively, the electronic device 100 may include a mobile phone (or called a "cellular" phone), a computer with a mobile terminal, a portable, pocket-sized, hand-held, computer-built-in or vehicle-mounted mobile device, a smart wearable device, and the like. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs) , and other equipment. Alternatively, the electronic device 100 may also include a limited device, such as a device with low power consumption, or a device with limited storage capability, or a device with limited computing capability. For example, it includes barcodes, radio frequency identification (radiofrequency identification, RFID), sensors, global positioning system (global positioning system, GPS), laser scanners and other information sensing devices.

As an example and not a limitation, in the embodiment of this application, smart wearable devices refer to the general term for wearable devices that are intelligently designed for daily wear and developed by applying wearable technology, such as glasses, gloves, watches, clothing and shoes. wait. A smart wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Smart wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction and cloud interaction. Generalized smart wearable devices include full-featured, large-sized, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, etc., and only focus on a certain type of application functions, and need to cooperate with other devices such as smart phones Use, such as various smart bracelets, smart helmets, smart jewelry, etc. for physical sign monitoring.

Alternatively, the electronic device 100 may also be a virtual reality (virtual reality, VR) device, an augmented reality (augmented reality, AR) device, a wireless terminal in industrial control (industrial control), or a wireless terminal in driverless (driverless) , wireless terminals in remote medical surgery, wireless terminals in smart grid, wireless terminals in transportation safety, wireless terminals in smart city, smart home home) in the wireless terminal, etc.

The power supply device 200 may be a power adapter, a mobile power supply or other devices capable of charging the electronic device 100 . For example, when the power supply device 200 is a power adapter, it can convert an external power source (such as mains power) into a DC signal and output it to the electronic device 100 .

A possible structure of the above-mentioned electronic device 100 will be further described below with reference to the accompanying drawings. Please refer to FIG. 2 , which is a schematic diagram of a hardware structure of an example of an electronic device 100 provided in an embodiment of the present application. As shown in Figure 2, the electronic device 100 may include a processor 120, an internal memory 110, an external memory 111, a charging management module 121, a power management module 122, a battery 123, an audio circuit 130, a speaker 131, a microphone 132, and an input device 140 , a display device 150 , a camera 160 , a sensor 170 , a radio frequency (radio frequency, RF) circuit 180 , a wireless fidelity (wireless fidelity, Wi-Fi) module 190 and other components.

Those skilled in the art can understand that Fig. 2 is only an example of the electronic equipment, and does not constitute a limitation to the electronic equipment. part. Or, on the basis of what is shown in FIG. 2 , there may be other modified structural manners.

The processor 120 is the control center of the electronic device 100. It uses various interfaces and lines to connect various parts of the entire electronic device 100. By running or executing instructions stored in the internal memory 110 and calling data stored in the internal memory 110, the processor 120 completes Various functions and processing data of the electronic device 100, so as to monitor the electronic device as a whole. Optionally, the processor 120 may include one or more processing units. Preferably, the processor 120 may integrate an application processor (application processor, AP) and a modem processor, wherein the application processor mainly processes the operating system, User interface and application programs, etc., modem processor mainly handles wireless communication. It can be understood that the foregoing modem processor may not be integrated into the processor 120 . In some embodiments, the processor 120 and the internal memory 110 may be implemented on the same chip, and in other embodiments, the processor 120 and the internal memory 110 may also be implemented on independent chips.

Internal memory 110 may be used to store computer-executable program code, which includes instructions. The processor 120 executes various functional applications and data processing of the electronic device 100 by executing instructions stored in the internal memory 110 . The internal memory 110 may include an area for storing programs and an area for storing data. Wherein, the storage program area can store the operating system, and software codes of at least one application program (such as camera application, WeChat application, etc.). The data storage area can store data (such as images, videos, etc.) generated during the use of the electronic device 100 . In addition, the internal memory 110 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, flash memory device, universal flash storage (universal flash storage, UFS) and the like.

The external memory interface 111 can be used to connect an external memory card, such as a micro (secure digital, SD) card, to expand the storage capacity of the electronic device 100 . The external memory card communicates with the processor 120 through the external memory interface 111 to implement a data storage function. Such as saving music, video and other files in the external memory card.

The peripheral interface may include a standard micro universal serial bus (micro universal serial bus, Micro USB) interface, and may also include a variety of connectors, such as a communication interface (not shown) that can be used to connect the electronic device 100 to communicate with other devices. 2 ), another example is the charging interface 133 shown in FIG. 2 that can be used to connect a charger to charge the electronic device 100 .

It should be understood that when the electronic device 100 is connected to the power adapter through the charging interface 133, the power transmission between the electronic device 100 and the power adapter can be realized through the charging interface 133; 100 is wirelessly connected to the power adapter through a Bluetooth connection, so that the power transmission between the electronic device 100 and the power adapter can be transmitted through Bluetooth. Wherein, the power adapter and the electronic device 100 may support the same protocol, such as a charging (power delivery, PD) protocol, etc., which is not limited in this embodiment of the present application.

The power adapter is connected to an external power source (such as commercial power, etc.), obtains electric energy from the external power source (such as commercial power, etc.), and then inputs the obtained electric energy to the electronic device 100 through the charging interface 133 (for example, input into the electronic device 100 charging management module 121). The charging management module 121 is used to manage the charging process, and the charging management module 121 includes a charging integrated circuit (integrated circuit, IC) for charging and a control circuit for controlling the charging phase. For example, after the connection between the charging interface 133 of the electronic device 100 and the power supply device 200 is established, the battery 123 is powered by the charging IC, and the control circuit can detect the charging voltage and charging current at both ends of the electronic device 100, and according to the detected The charging voltage and charging current at both ends of the electronic device 100, control the charging stage of the electronic device 100 (for example, in the constant voltage charging stage or in the constant current charging stage), after determining that the battery 123 of the electronic device 100 is full, control the display device 150 or the speaker 131 generates prompt information, where the prompt information may be voice, text, etc., or may be a light emitting diode (light emitting diode, LED) signal. For example, the display panel 151 in the display device 150 displays prompt information in basic text form, and the speaker 131 of the audio circuit 130 can also send out prompt information based on audio form, or control the LED light to flash to prompt that the battery is insufficient, which will not be done here. limited. A fuel gauge can also be set in the charging management module 121 , so that the charging management module 121 can obtain information about the current remaining power of the battery 123 and the last discharge capacity of the battery through the fuel gauge. The main steps of the charging method provided by the embodiment of the present application can be executed by the charging management module 121 .

Or, the charging management module 121 stores electricity for the battery 123 on the one hand, and provides input electric energy for the power management module 122 on the other hand; Various components (eg, processor 120, internal memory 110, input device 140, display device 150, sensor 170, etc.) provide power.

The power management module 122 receives the electric energy input by the battery 123 and/or the charging management module 121 to supply power for each component. For example, when the electronic device 100 is not connected to the power adapter, the power management module 122 receives the electric energy input by the battery 123 to supply power for various components. When the electronic device 100 is connected to the power adapter and charged, the power management module 122 receives the electric energy input by the charging management module 121 to supply power for each component. Of course, when the electronic device 100 is connected to the power adapter and charged, the power management module 122 It can also receive the electric energy input by the battery 123 to supply power for each component. It should be noted that the power management module 122 can supply power to each component in a sequential order, for example, supply power to the processor 120 first, and then supply power to other components. When the power management module 122 supplies power to the processor 120 and the processor 120 starts, it can Notify the power management module 122 which parts of other components are powered, or which components are not powered, and so on.

It should be understood that, when the electronic device 100 is not connected to the power adapter, the electronic device 100 can provide power for various devices through the electric energy stored in the battery 123 .

The input device 140 can be used to receive input numbers or character information, and generate key signal input related to user settings and function control of the electronic device. Taking the electronic device supporting touch input as an example, the input device 140 may include a touch screen, and may also include other input devices. Objects on the touch screen or near the touch screen), and drive the corresponding connection device according to the preset program. The touch screen can detect the user's touch operation on the touch screen, convert the touch operation into a touch signal and send it to the processor 120, or understand that the touch information of the touch operation can be sent to the processor 120, and can receive the touch signal from the processor 120. Orders sent and executed. The touch screen may provide an input interface and an output interface between the electronic device 100 and a user. In addition, touch screens can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic waves. In addition to a touch screen, the input device 140 may also include other input devices. For example, other input devices may include, but are not limited to, one or more of physical keyboards, function keys (such as volume control buttons, switch buttons, etc.), trackballs, mice, joysticks, and the like.

The display device 150 , including a display panel, can be used to display information input by a user or information provided to the user, various menu interfaces of the electronic device 100 , and the like. Further, the touch screen can cover the display device 150. When the touch screen detects a touch operation on or near it, it is sent to the processor 120 to determine the type of the touch event. A corresponding visual output is provided at 150 . In this embodiment, the touch screen and the display device 150 can be integrated into one component to realize the input, output, and display functions of the electronic device 100, such as displaying prompt information on the touch screen through the display device 150 to prompt the current remaining power of the electronic device 100 . For ease of description, the embodiment of the present application takes the touch screen as an example to represent the function set of the touch screen and the display device 150 , of course, in some embodiments, the touch screen and the display device 150 may also be used as two independent components.

The radio frequency circuit 180 can be used for sending and receiving information or receiving and sending signals during a call. Generally, a radio frequency circuit includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier (low noise amplifier, LNA), a duplexer, and the like. In addition, the radio frequency circuit 180 can also communicate with network equipment and other equipment through wireless communication. Wireless communication can use any communication standard or protocol, including but not limited to Global System of Mobile Communication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access, CDMA), wideband code division multiple access (wideband code division multiple access, WCDMA), long term evolution (long term evolution, LTE), email, short message service (short messaging service, SMS), etc.

The audio circuit 130 , the speaker 131 , and the microphone 132 can provide an audio interface between the user and the electronic device 100 . The audio circuit 130 can transmit the electrical signal converted from the received audio data to the speaker 131, and the speaker 131 converts it into an audio signal for output. On the other hand, the microphone 132 converts the collected sound signal into an electrical signal, which is converted into audio data after being received by the audio circuit 130, and then the audio data is processed by the output processor 120, and then sent to another electronic device through the radio frequency circuit 180 , or output the audio data to the internal memory 110 for further processing, and the audio circuit 130 may also include an earphone jack for providing a connection interface between the audio circuit 130 and the earphone. In the embodiment of the present application, the audio-based prompt information can be transmitted to the speaker 131 through the audio circuit 130, and the speaker 131 converts it into a sound signal for output, so as to achieve a voice-based prompt that the electronic device 100 is low in power and needs to be charged or that the power is fully charged. Purpose.

The Wi-Fi module 190 belongs to the short-distance wireless transmission technology. The electronic device 100 can help users send and receive emails, browse webpages, and access streaming media through the Wi-Fi module 190. It provides users with wireless broadband Internet access. Although FIG. 2 shows the Wi-Fi module 190, it can be understood that it is not a necessary component of the electronic device 100, and can be completely omitted as required without changing the essence of the application.

The electronic device 100 may also include a Bluetooth module (not shown in FIG. 2 ). Bluetooth (bluetooth) is a short-distance wireless communication technology. The use of bluetooth technology can effectively simplify the communication between mobile communication electronic devices such as handheld computers, notebook computers and mobile phones, and can also successfully simplify the communication between the above-mentioned devices and the Internet. The electronic device 100 uses the bluetooth module. Data transmission between the electronic device 100 and the Internet becomes faster and more efficient, broadening the way for wireless communication. Bluetooth technology is an open solution that enables wireless transmission of voice and data. Although FIG. 2 shows a bluetooth module, it can be understood that it is not a necessary component of the electronic device 100, and can be completely omitted as required without changing the essence of the application.

The electronic device 100 also includes a camera 160 for capturing images or videos. The camera 160 may be a common camera or a focusing camera.

Although not shown in FIG. 2 , the electronic device 100 may also include other possible functional modules such as flashlights, LED lights, and various sensors, which will not be repeated here.

The charging process of the electronic device 100 in the prior art will be introduced below in combination with the hardware structure of the electronic device 100 shown in FIG. 2 .

In the current charging process, the charging process is controlled by setting cut-off voltages corresponding to different charging stages. As an example, the cut-off voltage corresponding to the pre-charging phase is set to 3V and the cut-off voltage corresponding to the constant-current charging phase is set to the maximum voltage that the battery 123 can withstand (for example, 4.4V). Then, during the charging process, the control circuit of the charging management module 121 monitors the voltage at both ends of the battery 123 in real time, so as to control the battery 123 to enter a corresponding charging stage.

When charging starts, the control circuit of the charging management module 121 first controls the battery to be in the pre-charging stage. In the constant current charging stage, the battery 123 is charged with a constant current (preset current). Continue to detect the voltage at both ends of the battery 123. When the control circuit of the charge management module 121 determines that the voltage at both ends of the battery 123 reaches the cut-off voltage corresponding to the constant current charging stage, the battery 123 is controlled to enter the constant voltage charging stage. In this stage, the voltage of the battery remains constant, and the charging current gradually decreases. When the charging current is less than or equal to the preset cut-off current, it is considered that the battery 123 is fully charged, thereby stopping charging the battery 123 .

However, in the actual charging process, the charging management module 121 uses the voltage between the output current of the charging IC and the ground as the voltage across the battery 123 . And there is some impedance between the output current of the charging IC and the ground. Please refer to FIG. 3 , which is a block diagram of the current loop between the output current of the charging IC and the ground when the charging IC is connected to the battery 123 through a connector. As shown in FIG. 3 , the output current of the charging IC first flows through the positive pole of the connector, and then the output current flows through the battery cell 123 via the positive pole of the connector. The battery 123 is provided with a cell protection device, so that the output current flows through the cell protection device, through the negative pole of the connector, and finally through the fuel gauge, to the ground.

In the current loop shown in Figure 3, there is a contact resistance of the positive pole of the connector between the charging IC and the positive pole of the connector, the battery protection device has internal resistance, and there is a negative contact of the connector between the negative pole of the connector and the battery protection device Resistors, and fuel gauges have internal resistance, etc. Due to the existence of these impedances, when the battery 123 is in the constant voltage charging phase, as the cell voltage increases, these resistances will produce a voltage drop, so that the charging current will slowly decrease. However, the current in the constant current charging stage is generally large and the preset cut-off current is small. Therefore, it takes a long time to slowly drop from a large current to a small current, which in turn results in a long charging time of the electronic device.

In view of this, an embodiment of the present application provides a charging control method, which can reduce the charging time of an electronic device. Please refer to FIG. 4 , which is a flowchart of an example of a charging control method provided in an embodiment of the present application. Hereinafter, it will be described by taking the method applied to the electronic device 100 shown in FIG. 2 as an example. It can be understood that the method can be executed by the charging management module 121 of the electronic device 100 . The flow of the method includes:

S401. The charging management module 121 determines that the electronic device 100 is in a charging state.

The charging management module 121 can determine whether the electronic device 100 is in the charging state by detecting whether the charging interface 133 is currently electrically connected to the power supply device 200 , and if so, determine that the electronic device 100 is in the charging state. Of course, if it is a wireless charging scenario, the charging management module 121 may also detect whether electric energy is received wirelessly, and if so, determine that the electronic device 100 is in a charging state.

As an example, when the charging interface 133 is not connected to the power supply device 200, it generates a first electrical signal (for example, a low level signal), and when the power supply device 200 is connected to the charging interface 133, the charging interface 133 can generate a second electrical signal. signal (for example, a high-level signal). The charging management module 121 detects the electrical signal generated by the charging interface 133 in real time, and when the charging management module 121 detects that the charging interface 133 generates the second electrical signal, it determines that the electronic device 100 is in a charging state.

S402. The charging management module 121 determines that the initial charging phase is a pre-charging phase.

Specifically, it can be seen from the foregoing description that the charging process of the battery 123 can be divided into three stages, which are the pre-charging stage, the constant current charging stage and the constant voltage charging stage. However, the pre-charging stage is usually aimed at the situation that the initial voltage of the battery is low, that is to say, when the battery 123 is charged, if the initial voltage of the battery 123 is already high, it can directly enter the constant current stage. Therefore, in In the embodiment of the present application, when the charging management module 121 determines that the electronic device 100 is in the charging state, the charging management module 121 needs to determine the corresponding initial charging time for the battery 123 according to the current remaining power of the battery 123 or the voltage at both ends of the battery 123. charging phase.

As an example, the charging management module 121 may acquire the remaining power of the battery 123 at the current moment, and then determine an initial charging stage according to the remaining power of the battery 123 . For example, if the remaining power of the battery 123 is less than 20% (when the battery is fully charged, the remaining power is 100%), then the charging management module 121 determines that the initial charging stage is the pre-charging stage; if the remaining power of the battery 123 is greater than 20%, Then the charging management module 121 determines that the initial charging phase is a constant current charging phase.

As another example, the charging management module 121 may acquire the voltage across the battery 123 after determining that the electronic device 100 is in the charging state, and then determine the initial charging stage according to the voltage across the battery 123 . For example, if the voltage across the battery 123 is less than 3V, the charging management module 121 determines that the initial charging phase is a pre-charging phase; otherwise, the charging management module 121 determines that the initial charging phase is a constant current charging phase.

It should be noted that the voltage at both ends of the battery 123 can be understood as the voltage between the output current of the charging IC and the ground, please refer to FIG. 3 for details, and details will not be repeated here.

For the convenience of description, the initial charging stage is taken as the pre-charging stage as an example in the following.

S403, the charging management module 121 charges the battery 123 according to the charging parameters corresponding to the pre-charging stage.

After the charging management module 121 determines the initial charging stage, it charges the battery 123 with a charging current (for example, 0.5A) corresponding to the pre-charging stage. The pre-charging stage is the same as that of the prior art, and will not be repeated here.

S404. The charging management module 121 determines whether the voltage across the battery 123 is greater than or equal to the first voltage threshold, and if yes, enters a constant current charging phase.

In the embodiment of the present application, the first voltage threshold is smaller than the charging cut-off voltage of the battery 123 . The charging cut-off voltage can be understood as the rated voltage of the battery 123 , which can be 4.2V or 4.4V. Since the charging current used in the pre-charging stage is relatively small, in order to reduce the total time required to fully charge the battery 123, the value of the first voltage threshold can be set to a relatively small value, for example, 3V, etc. The personnel can be set according to the actual situation, and there is no limitation here.

When the charging management module 121 is charging the battery 123, the charging management module 121 will monitor the voltage at both ends of the battery 123 in real time. When the charging management module 121 determines that the voltage at the two ends of the battery 123 is equal to the first voltage threshold, it will enter the constant current charging stage and control The output current of the charging IC is a preset current, so that the battery 123 is charged with the preset current. The preset current can be a larger current value, for example, 1A or 2A, etc., which is not limited here.

It should be noted that the charging management module 121 may also acquire the voltage across the battery 123 in other ways, for example, may acquire the voltage across the battery 123 at a preset frequency. In this case, if the voltage across the battery 123 obtained for the nth time is less than the first voltage threshold, and the voltage obtained for the n+1th time across the battery 123 is greater than the first voltage threshold, the charging management module 121 controls the charging IC The output current is the preset current. For the convenience of description, in the following, the charge management module 121 monitors the voltage across the battery 123 in real time as an example.

S405. The charging management module 121 determines whether the voltage across the battery 123 is greater than or equal to the second voltage threshold, and if yes, enters the first constant voltage charging stage.

In the embodiment of the present application, the second voltage threshold is higher than the charging cut-off voltage of the battery 123 . In this way, compared with the charging method in the prior art (that is, by judging whether the voltage at both ends of the battery is greater than or equal to the charging cut-off voltage, the charging process is controlled to enter the constant voltage charging stage), it is equivalent to prolonging the battery 123 in the constant voltage charging stage. The length of the flow charging phase can reduce the charging time.

The second voltage threshold will be described below.

There are two situations for the second voltage threshold:

In the first case, if the charging IC in the charging management module 121 has a compensation function, the second voltage threshold can be set to the sum of the charging cut-off voltage and the compensation voltage, which is the preset current and compensation resistance in the constant current charging phase The product of the impedance values. The compensation resistor can be set between the connector and the battery in the current loop as shown in FIG. 3 , and the impedance value of the compensation resistor can be set according to usage requirements.

In the second case, if the charging IC in the charging management module 122 does not have a compensation function, the second voltage threshold cannot be set to the value described in the first case, and the second voltage threshold can be set to the value equal to the charging cut-off voltage and The sum of the preset unit voltage, the preset unit voltage can be understood as the step value of the charging IC setting stop charging voltage, marked as △V, for example, △V is 0.02V or 0.03V or 0.032V, etc. Since the full charge voltage of the battery 123 in different types of electronic devices 100 may be different, in order to be able to charge batteries with different full charge voltages, the charging management module 122 can pre-set the step value for the charging IC, so that According to the full charge voltage of different batteries, the charging cut-off voltage can be adjusted adaptively, which can improve the application range of the charging IC. In the embodiment of the present application, the specific value of the step value is not limited.

In this manner, even if the charging IC has no compensation function, the duration of the battery 123 in the constant current charging phase can be extended, that is, an effect similar to that of the compensation function can be achieved.

In the embodiment of the present application, the case where the charging IC does not have a compensation function is taken as an example.

When the charging management module 121 determines that the voltage at both ends of the battery 123 is equal to the second voltage threshold, the output voltage of the charging IC is controlled to remain at the value of the second voltage threshold, so that the charging voltage of the battery 123 remains unchanged, that is, enters the first voltage threshold. Constant voltage charging stage. It should be noted that the second voltage threshold can also be understood as the charging voltage in the first constant voltage charging stage.

S406. The charging management module 121 determines whether the charging current of the battery 123 is less than or equal to a preset current threshold value, and if yes, enters a second constant voltage charging stage.

In the embodiment of the present application, the preset current threshold is greater than the charging cut-off current of the battery 123 . The preset current threshold value may be the sum of the charging cut-off current and the preset current, wherein the preset current may be the preset unit voltage and the impedance between the output current of the charging IC and the battery core. ratio. Specifically, assuming that the actual test value of the impedance between the output current of the charging IC and the battery core is R, for example, the value of R can be 0.055 ohm m (Ω m or ohm), so as to obtain the preset current ΔV/R=0.032/0.055=0.581A, where 0.032 is the preset unit voltage, then the preset current threshold value is the sum of the charging cut-off current and 0.581A.

It should be noted that the preset current threshold value can also be understood as the charging cut-off current corresponding to the first constant voltage charging stage.

It can be seen that, when the battery 123 is in the first constant voltage charging stage, the charging current of the battery 123 is higher than the preset current threshold value. However, even if the charging current of the battery 123 is higher than the preset current threshold value, due to the impedance between the output current of the charging IC and the battery cell, the battery 123 will not be overcharged. For example, assuming that the charging cut-off voltage of the battery 123 is 4.4V, the preset unit voltage is 0.032V, and the impedance between the output current of the charging IC and the battery cell is 0.055ohm, then according to Ohm's law, the voltage of the battery cell is less than the first The difference between the charging cut-off voltage corresponding to a constant voltage charging stage and the voltage across the resistor between the output current of the charging IC and the battery cell, for example, the charging cut-off voltage corresponding to the first constant voltage charging stage is 4.432V, and the charging IC’s The voltage across the resistor between the output current and the cell is (0.581A*0.055), then the voltage of the cell is less than [4.432V-(0.581*0.055)V], that is, the voltage of the cell is always less than or equal to 4.4V It can be seen that when the battery 123 is in the first constant-voltage charging stage, even if the charging management module 121 fails, the battery 123 will not have the risk of overcharging.

When the battery 123 is in the first constant voltage charging stage, the charging management module 121 will monitor the charging current of the battery 123 in real time (or it can be understood as the output current of the charging IC). When the charging management module 121 determines that the charging current is less than or equal to the preset current threshold value, the output voltage of the charging IC is controlled to be the charging cut-off voltage of the battery 123, and the charging voltage is kept unchanged, that is, the battery 123 enters the second Constant voltage charging stage. In the embodiment of the present application, the charging voltage in the second constant voltage charging stage is the charging cut-off voltage. For example, 4.2V or 4.4V.

When the battery is in the second constant-voltage charging stage, since the charging voltage in the second constant-voltage charging stage has been set as the charging cut-off voltage of the battery 123, the voltage of the battery 123 will not exceed the charging cut-off voltage. There is a risk of overcharging.

S407 , the charging management module 121 determines whether the charging current of the battery 123 is less than the charging cut-off current, and if yes, stops charging the battery 123 .

In the above technical solution, by setting two different constant-voltage charging stages, and the charging voltage in the first constant-voltage charging stage is higher than the charging cut-off voltage of the battery, the duration of the battery in the constant-current charging stage can be extended, Can reduce charging time. Moreover, since the charging cut-off current in the first constant-voltage charging stage is also greater than the charging cut-off current of the battery, the risk of overcharging of the battery can be avoided.

In the above-mentioned embodiment, when charging the battery 123, a new constant voltage charging stage with a higher charge cut-off voltage and a larger charge cut-off current is set. The new constant-voltage charging stage is similar to the constant-voltage charging stage, so as to prolong the duration of the battery in the constant-current charging stage as far as possible, and the number of the new constant-voltage charging stage is not limited here.

In the embodiment shown in FIG. 4 , the charging management module 121 determines whether the battery is fully charged through the charging current of the charging IC, so as to decide whether to stop charging the battery. In another embodiment, it is also possible to determine whether to stop charging the battery by determining the capacity of the battery. For example, the full capacity of the battery can be set. When the charging management module 121 determines that the battery capacity reaches the full capacity, Then it is determined to stop charging the battery. It can be seen that the full capacity of the battery is also a factor that affects the charging time. In order to reduce the charging time of the battery, in actual use, a mechanism for reporting full in advance can be used. Specifically, the charging management module 121 can obtain the last discharge capacity of the battery 123 through the fuel gauge, and use 98% or 97% of the last discharge capacity of the battery 123 as the reported full capacity for the next charge. This reported full capacity is called "Self-learning capacity". When charging next time, when the charging management module 121 determines that the charging capacity of the battery 123 reaches the full capacity through the fuel gauge, the full capacity will be implemented, that is, the user interface of the electronic device 100 can be controlled by the processor to display the power as 100%.

Due to the individual differences in the capacity of batteries, the discharge capacity of different batteries is also different, so that the reported full capacity of different batteries at the next charge is different, resulting in differences in the charging time of different electronic devices, for example, there may be about 10 minutes difference. Therefore, determining the appropriate full capacity of the battery can also achieve the technical effect of reducing the charging time. Next, please refer to FIG. 5 , which introduces a flow chart of another example of the charging control method provided by the embodiment of the present application. In the embodiment, the charging time is reduced by improving the accuracy of battery full report.

S501. The charging management module 121 determines that the electronic device 100 is in a charging state.

Step S501 is similar to step S401 and will not be repeated here.

S502 , the charging management module 121 determines the self-learning capacity of the battery 123 .

Specifically, the fuel gauge can count the discharge capacity of the battery 123 last time, and when the charging management module 121 determines that the electronic device is in a charging state, it can obtain the discharge capacity from the fuel gauge. Then determine the self-learning capacity of the battery according to the discharge capacity obtained from the fuel gauge. As an example, 98% or 97% of the discharge capacity can be used as the self-learning capacity of the battery 123 . For example, the charging management module 121 determines that the self-learning capacity of the battery 123 is 3050 milliampere hours (mAh) or 2800 mAh.

S503 , the charging management module 121 compares the determined self-learning capacity with the preset capacity of the battery 123 , and determines whether the self-learning capacity is greater than the preset capacity of the battery 123 . If yes, execute step S504, and if no, execute step S505.

As an example, the preset capacity of the battery 123 may be the capacity of the battery 123 set by a technician when the electronic device 100 leaves the factory, for example, it may be 3000mAh. The preset capacity may be pre-stored in the memory of the charging management module. Of course, the charging management module 121 may also acquire the preset capacity in a manner, for example, from the memory 110 in the electronic device 100, which is not limited in this embodiment of the present application.

S504 , the charging management module 121 determines that the product of the preset capacity of the battery 123 and the preset percentage is taken as the reported full capacity of the battery 123 .

In the embodiment of the present application, the preset percentage may be 98% or 97%, or other values, which are not limited herein. As an example, if the charging management module 121 determines that the self-learning capacity of the battery 123 is 3050mAh, and the preset capacity of the battery 123 is 3000mAh, since the self-learning capacity of the battery 123 is greater than the preset capacity of the battery 123, the charging management module 121 determines to use 98% of the preset capacity as the reported full capacity of the battery 123 .

S505 , the charging management module 121 determines that the product of the determined self-learning capacity of the battery 123 and a preset percentage is taken as the reported full capacity of the battery 123 .

The preset percentage is similar to the preset percentage in step S504 and will not be repeated here. As an example, if the charging management module 121 determines that the self-learning capacity of the battery 123 is 2800mAh, and the preset capacity of the battery 123 is 3000mAh, since the self-learning capacity of the battery 123 is smaller than the preset capacity of the battery 123, the charging management module 121 determines that 98% of the self-learning capacity is taken as the reported full capacity of the battery 123 .

It should be noted that, in the embodiment of the present application, the execution order of step S501 and step S502 to step S505 is not limited. For example, step S501 may be performed before step S502, or step S502-step S505 may be performed before step S501, or step S501 and step S502-step S505 may be performed simultaneously. In FIG. 5 , it takes step S501 to be executed first, and then steps S502 to S505 to be executed as an example.

S506. The charging management module 121 determines that the initial charging phase is a pre-charging phase.

S507, the charging management module 121 charges the battery 123 according to the charging parameters corresponding to the pre-charging stage.

S508. The charging management module 121 determines that the voltage across the battery 123 is greater than or equal to the first voltage threshold, and enters a constant current charging phase.

S509. The charging management module 121 determines that the voltage across the battery 123 is greater than or equal to the second voltage threshold, and enters the first constant voltage charging stage.

S510, the charging management module 121 determines that the charging current of the battery 123 is less than or equal to a preset current threshold value, and then enters a second constant voltage charging stage.

Steps S506 to S510 are similar to steps S402 to S406 and will not be repeated here.

S511. When the charging management module 121 determines that the charging power of the battery 123 reaches the reported full capacity, control the display screen of the electronic device 100 to display that the power is 100%. Alternatively, it is also possible to indicate that the power is 100% by controlling the blinking of the LED light or changing the color of the LED, which is not limited here.

S512 , the charging management module 121 determines that the charging current of the battery 123 is less than the charging cut-off current, and stops charging the battery 123 .

In the above technical solution, on the basis of the embodiment shown in Fig. 4, by comparing the self-learning capacity with the preset capacity of the battery, the optimal full capacity of the battery can be determined, and the rate of battery full can be improved. Accuracy, which in turn can shorten the time difference in charging the batteries of different electronic devices.

It should be noted that the steps performed by the charging management module 121 can be written in the charging management module 121 in the form of instructions or programs, so that when the charging management module 121 is in the running state, it will execute the steps according to the instructions or programs. Apply the method in the examples.

In the above-mentioned embodiments provided in the present application, the method provided in the embodiments of the present application is introduced from the perspective of an electronic device serving as an execution subject. In order to realize the various functions in the method provided by the above embodiments of the present application, the electronic device may include a hardware structure and/or a software module, and realize the above-mentioned functions in the form of a hardware structure, a software module, or a hardware structure plus a software module. Whether one of the above-mentioned functions is executed in the form of a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and design constraints of the technical solution.

The following describes the devices provided by the embodiments of the present application with reference to the accompanying drawings, so as to implement the above-mentioned method embodiments of the present application.

Based on the same inventive concept as the method embodiment, the embodiment of the present application provides a charging control device 600, which is specifically used to implement the method executed by the charging management module 121 in the embodiment described in Fig. 4 and Fig. 5 , the charging control device 600 The structure shown in FIG. 6 includes a detection module 601 and a control module 602. When the charging control device 600 executes the method shown in FIG. 4, the detection module 601 can be used to obtain the charging current and /or the charging voltage across the battery 123, and/or other processes used to support the techniques described in the embodiments of this application. The control module 602 may be used to execute steps S401 to S407 in the embodiment shown in FIG. 4 , and/or to support other processes of the technologies described in the embodiments of this application. Wherein, all relevant content of each step involved in the above-mentioned method embodiment can be referred to the function description of the corresponding function module, and will not be repeated here.

When implemented by hardware, the hardware implementation of the charging control device can also refer to FIG. 7 and related descriptions.

As shown in FIG. 7 , it is a structural diagram of another example of a charging control device. The charging control device 700 may include: one or more processors 701, memory 702, and one or more computer programs 703; The connection is via one or more communication buses 704 . Wherein, the one or more computer programs 703 are stored in the memory 702 and configured to be executed by the one or more processors 701, the one or more computer programs 703 include instructions, and the instructions are executed by one or more When executed by each processor 701, all or part of the steps described in the foregoing method embodiment shown in FIG. 4 or FIG. 5 may be implemented.

Wherein, the processor 701 may be a central processing unit (central processing unit, CPU), or a specific application integrated circuit (application-specific integrated circuit, ASIC), may be one or more integrated circuits for controlling program execution, may be Baseband chips, and so on. The number of the memory 702 may be one or more, and the memory 702 may be a read-only memory (read-only memory, ROM), a random access memory (random access memory, RAM), or a disk memory, and so on.

The electronic device shown in FIG. 7 may be a mobile phone, an ipad, a notebook computer, a smart TV, a wearable device (such as a smart watch, a smart helmet or a smart bracelet, etc.) and the like. When the electronic device shown in FIG. 7 is a mobile phone, its structure can be referred to in FIG. 2 , for example, the memory 702 is the internal memory 110 in FIG. 2 .

An embodiment of the present application also provides a computer storage medium, the computer-readable storage medium includes a computer program, and when the computer program runs on the electronic device, the electronic device executes the method shown in Figure 4 or Figure 5 All the steps performed by the charging management module 121 described in the embodiments.

The embodiment of the present application also provides a computer program product, which, when the computer program product runs on the electronic device, causes the electronic device to execute the charging management module described in the method embodiment shown in Figure 4 or Figure 5 All the steps performed by 121.

The embodiment of the present application also provides a chip system, the chip system includes a processor, used to support the charging control device to implement the method shown in the embodiment shown in Figure 4 or Figure 5, such as generating or processing Figure 4 or Figure 5 The illustrated embodiments provide data and/or information involved in the methods. The chip system also includes a memory, the memory is used to save the necessary program instructions and data of the charging control device, and the processor in the chip system can call the program instructions and data stored in the memory in the chip system to make the chip system The functions that can be realized by the charging management module 121 described above can be realized. The system-on-a-chip may consist of chips, or may include chips and other discrete devices.

In the above embodiments, all or part of them may be implemented by software, hardware, firmware or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application will be generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website, computer, server or data center Transmission to another website site, computer, server, or data center by wired (eg, coaxial cable, optical fiber, DSL) or wireless (eg, infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server or a data center integrated with one or more available media. The available media may be magnetic media (eg, floppy disk, hard disk, magnetic tape), optical media (eg, DVD), or semiconductor media (eg, solid state hard disk), etc.

The foregoing description, for purposes of explanation, has been described with reference to specific embodiments. However, the exemplary discussions above are not intended to be exhaustive or to limit the application to the precise forms disclosed. Many modifications and variations are possible in light of the above teaching. The embodiment was chosen and described in order to fully explain the principles of the application and its practical application, to thereby enable others skilled in the art to fully utilize the application and various implementations with various modifications as are suited to the particular use contemplated. example.

Claims (6)

1. A charge control method applied to an electronic device including a battery, comprising:

detecting that the electronic equipment is currently in a state of being charged by power supply equipment;

when the voltage at the two ends of the battery is detected to be larger than or equal to a first voltage threshold, charging the battery by using a current with a preset size; the first voltage threshold is less than a charge cutoff voltage of the battery;

when the voltage at the two ends of the battery is detected to be more than or equal to a second voltage threshold, controlling the voltage value for charging the battery to be kept at the value of the second voltage threshold; the second voltage threshold is higher than a charge cutoff voltage of the battery; the second voltage threshold is the sum of the charging cut-off voltage and a preset unit voltage;

When detecting that the charging current of the battery is smaller than or equal to a preset current threshold value, controlling the voltage value for charging the battery to be kept at the value of the charging cut-off voltage of the battery; the preset current threshold value is larger than the charging cut-off current of the battery; the preset current threshold value is a ratio between the preset unit voltage and charging impedance, and the charging impedance is an impedance between an output end of the power supply equipment and ground;

determining the full charge of the battery according to the discharge amount of the battery before the battery is charged by the power supply equipment; when the current electric quantity of the battery is larger than or equal to the full charge, controlling the electronic equipment to display that the battery is in a full charge state; stopping charging the battery when detecting that the charging current of the battery is less than or equal to the charging cut-off current of the battery;

wherein, according to the discharge amount of the battery before being charged by the power supply equipment, determining the full charge of the battery comprises: comparing the magnitude relation between the self-learning capacitance and the preset capacitance of the battery; the self-learning capacitance is the product of the discharge amount of the battery before being charged by the power supply equipment and a preset percentage; and if the self-learning electric capacity is larger than or equal to the preset electric capacity of the battery, determining that the full charge of the battery is the product of the preset electric capacity and the preset percentage.

2. The method of claim 1, wherein determining the full charge of the battery based on the discharge of the battery prior to charging by the power supply device, further comprises:

and if the self-learning electric capacity is smaller than the preset electric capacity of the battery, determining that the full charge of the battery is the product of the self-learning electric capacity and the preset percentage.

3. A charging control device applied to an electronic apparatus including a battery, comprising a detection module and a control module, wherein:

the detection module is used for detecting that the electronic equipment is in a state of being charged by power supply equipment currently, and detecting the voltage and charging current at two ends of the battery when the electronic equipment is charged by the power supply equipment;

the control module is used for charging the battery by using a current with a preset size when the voltage at the two ends of the battery is larger than or equal to a first voltage threshold; the first voltage threshold is less than a charge cutoff voltage of the battery; when the voltage at the two ends of the battery is larger than or equal to a second voltage threshold, controlling the voltage value for charging the battery to be kept at the value of the second voltage threshold; the second voltage threshold is higher than a charge cutoff voltage of the battery; and when the charging current of the battery is smaller than or equal to a preset current threshold value, controlling the voltage value for charging the battery to be kept at the value of the charging cut-off voltage of the battery; the preset current threshold value is larger than the charging cut-off current of the battery; the second voltage threshold is the sum of the charging cut-off voltage and a preset unit voltage;

The control module is further configured to: determining the full charge of the battery according to the discharge amount of the battery before the battery is charged by the power supply equipment; when the current electric quantity of the battery is larger than or equal to the full charge, controlling the electronic equipment to display that the battery is in a full charge state; stopping charging the battery when the detection module detects that the charging current of the battery is less than or equal to the charging cut-off current of the battery; the preset current threshold value is a ratio between the preset unit voltage and charging impedance, and the charging impedance is an impedance between an output end of the power supply equipment and ground;

the control module determines the full charge of the battery according to the discharge amount of the battery before being charged by the power supply equipment, and is specifically used for: comparing the magnitude relation between the self-learning capacitance and the preset capacitance of the battery; the self-learning capacitance is the product of the discharge amount of the battery before being charged by the power supply equipment and a preset percentage; and if the self-learning electric capacity is larger than or equal to the preset electric capacity of the battery, determining that the full charge of the battery is the product of the preset electric capacity and the preset percentage.

4. The apparatus of claim 3, wherein the control module is further configured to determine a full charge of the battery based on an amount of discharge of the battery prior to charging by the power supply device, and further configured to:

and if the self-learning electric capacity is smaller than the preset electric capacity of the battery, determining that the full charge of the battery is the product of the self-learning electric capacity and the preset percentage.

5. An electronic device comprising at least one processor and at least one memory, wherein;

the memory is used for storing one or more computer programs;

the one or more computer programs, when executed by the at least one processor, enable the electronic device to implement the method of any one of claims 1-2.

6. A computer readable storage medium, characterized in that the computer readable storage medium comprises a computer program which, when run on an electronic device, causes the electronic device to perform the method according to any of claims 1-2.

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