CN117200368A

CN117200368A - Battery control circuit, method, terminal device and storage medium

Info

Publication number: CN117200368A
Application number: CN202210609868.6A
Authority: CN
Inventors: 方俊伟; 潘晓佳
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2022-05-31
Filing date: 2022-05-31
Publication date: 2023-12-08

Abstract

The application is suitable for the technical field of batteries, and provides a battery control circuit, a battery control method, terminal equipment and a storage medium. The circuit comprises a charge-discharge module, a voltage regulating module and a control module, wherein the control module is used for monitoring the output voltage of the battery, sending a first discharge signal to the voltage regulating module when the output voltage of the battery is smaller than a preset output voltage, and boosting the output voltage through the voltage regulating module to obtain a boosted voltage, so that the voltage value of the boosted voltage is larger than the preset output voltage and is larger than the rated working voltage of a load, and the charge-discharge module is used for reducing the boosted voltage to obtain a first discharge voltage, so that the first discharge voltage is close to the rated working voltage of the load, the load of electric equipment can be driven to stably operate, the load is prevented from being damaged by the excessive voltage value, the stable release of the performance of the electric equipment is ensured when the discharge depth of the battery is reduced, and the integral performance, the running stability and the running safety of the electric equipment can be improved.

Description

Battery control circuit, method, terminal device and storage medium

Technical Field

The present application relates to the field of battery technologies, and in particular, to a battery control circuit, a method, a terminal device, and a storage medium.

Background

Along with the continuous improvement and development of the lithium ion battery (Lithium Lon Cells And Batteries) technology, the application of the lithium ion battery in different fields is more and more extensive, and the lithium ion battery can be applied to electronic equipment such as a mobile phone, a notebook computer, a camera and the like, and can also be applied to electric equipment such as an electric bicycle, an electric automobile, an electric airplane and the like. At present, a graphite material is generally adopted as a negative electrode of the lithium ion battery, and the graphite negative electrode has the advantages of low cost, high discharge stability and the like, while the specific capacity (Specific Capacity) of the graphite negative electrode lithium ion battery is low, so that the energy density of the lithium ion battery is limited.

Currently, various large battery manufacturers and terminal manufacturers try to select new materials as the negative electrode of the lithium ion battery, for example, silicon materials are adopted as the negative electrode of the lithium ion battery, compared with a graphite negative electrode lithium ion battery, the discharging depth of the lithium ion battery can be reduced, the silicon negative electrode lithium ion battery can release electric quantity under lower output voltage, the energy density of the lithium ion battery can be effectively improved, and accordingly larger battery capacity is achieved under the same volume. And the discharging depth of the lithium ion battery is reduced, so that the output voltage is reduced, and when the output voltage of the lithium ion battery is smaller than the rated working voltage of part of components in the electric equipment, the performance of the components is easily reduced, and the overall performance and the working stability of the electric equipment are affected. Therefore, how to ensure the stable release of the performance of the electric equipment when the depth of discharge of the lithium ion battery is reduced is a current problem to be solved.

Disclosure of Invention

In view of the above, the embodiments of the present application provide a battery control circuit, a method, a terminal device, and a storage medium, so as to solve the problem that when the depth of discharge of the existing lithium ion battery is reduced, the performance of the electric equipment is released and the stability is poor.

A first aspect of an embodiment of the present application provides a battery control circuit, applied to a terminal device, where the terminal device includes a battery and a load, and the circuit is characterized in that the circuit includes a charge-discharge module, a voltage regulation module, and a control module;

the control module is respectively connected with the charge and discharge module and the voltage regulating module;

the control module is used for being connected with the battery, and sending a first discharging signal to the voltage regulating module when the output voltage of the battery is smaller than a preset output voltage;

the voltage regulating module is used for being connected with the battery, receiving the output voltage of the battery according to the first discharging signal, boosting the output voltage to obtain boosted voltage and sending the boosted voltage to the charging and discharging module;

the charge-discharge module is used for being connected with the load, and reducing the boosted voltage when receiving the boosted voltage to obtain a first discharge voltage and outputting the first discharge voltage to the load.

According to the battery control circuit, the control module monitors the output voltage of the battery, when the output voltage of the battery is smaller than the preset output voltage, the first discharge signal is sent to the voltage regulating module, the voltage regulating module is used for boosting the output voltage to obtain the boosted voltage, the voltage value of the boosted voltage is larger than the preset output voltage and is larger than the rated working voltage of a load, the charge-discharge module is used for reducing the boosted voltage to obtain the first discharge voltage, the first discharge voltage is close to the rated working voltage of the load, the load of electric equipment can be driven to stably operate, the load is prevented from being damaged by the excessive voltage value, the stable release of the performance of the electric equipment is guaranteed when the discharge depth of the battery is reduced, and the integral performance, the running stability and the running safety of the electric equipment can be improved.

A second aspect of the embodiment of the present application provides a terminal device, which includes a battery, a load, and a battery control circuit provided in the first aspect of the embodiment of the present application, where the battery is connected to a charge/discharge module, a voltage regulation module, and a control module, and the load is connected to the battery and the charge/discharge module, respectively.

A third aspect of the embodiment of the present application provides a battery control method, which is applied to the control module of the battery control circuit provided in the first aspect of the embodiment of the present application, and the method includes:

when the output voltage of the battery is smaller than the preset output voltage, a first discharging signal is sent to the voltage regulating module;

receiving the output voltage of the battery through the voltage regulating module according to the first discharging signal, boosting the output voltage to obtain boosted voltage and sending the boosted voltage to the charging and discharging module;

and receiving the boosted voltage through the charge-discharge module, and reducing the boosted voltage to obtain a first discharge voltage and outputting the first discharge voltage to the load.

A fourth aspect of the embodiments of the present application provides a computer-readable storage medium storing a computer program which, when executed by a processor, implements the steps of the battery control method provided by the third aspect of the embodiments of the present application.

It will be appreciated that the advantages of the second to fourth aspects may be found in the relevant description of the first aspect and are not repeated here.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of a first structure of a terminal device according to an embodiment of the present application;

fig. 2 is a schematic diagram of a second structure of a terminal device according to an embodiment of the present application;

fig. 3 is a schematic diagram of a third structure of a terminal device according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a fourth terminal device according to an embodiment of the present application;

fig. 5 is a schematic diagram of a fifth structure of a terminal device according to an embodiment of the present application;

fig. 6 is a schematic diagram of a sixth structure of a terminal device according to an embodiment of the present application;

fig. 7 is a schematic diagram of a seventh structure of a terminal device according to an embodiment of the present application;

fig. 8 is an eighth structural schematic diagram of a terminal device according to an embodiment of the present application;

fig. 9 is a ninth structural schematic diagram of a terminal device according to an embodiment of the present application;

fig. 10 is a schematic diagram of a first flow of a battery control method according to an embodiment of the present application.

Detailed Description

In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, techniques, etc., in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

It should be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It should also be understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

As used in the present description and the appended claims, the term "if" may be interpreted as "when..once" or "in response to a determination" or "in response to detection" depending on the context. Similarly, the phrase "if a determination" or "if a [ described condition or event ] is detected" may be interpreted in the context of meaning "upon determination" or "in response to determination" or "upon detection of a [ described condition or event ]" or "in response to detection of a [ described condition or event ]".

Furthermore, the terms "first," "second," "third," and the like in the description of the present specification and in the appended claims, are used for distinguishing between descriptions and not necessarily for indicating or implying a relative importance.

Reference in the specification to "one embodiment" or "some embodiments" or the like means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," and the like in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments" unless expressly specified otherwise. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless expressly specified otherwise.

In application, currently, various large battery manufacturers and terminal manufacturers try to select new materials as the negative electrode of the lithium ion battery, for example, silicon materials are adopted as the negative electrode of the lithium ion battery, compared with a graphite negative electrode lithium ion battery, the discharging depth of the lithium ion battery can be reduced, the silicon negative electrode lithium ion battery can release electric quantity under lower output voltage, the energy density of the lithium ion battery can be effectively improved, and accordingly larger battery capacity is achieved under the same volume. And the discharging depth of the lithium ion battery is reduced, so that the output voltage is reduced, and when the output voltage of the lithium ion battery is smaller than the rated working voltage of part of components in the electric equipment, the performance of the components is easily reduced, and the overall performance and the working stability of the electric equipment are affected. Therefore, how to ensure the stable release of the performance of the electric equipment when the depth of discharge of the lithium ion battery is reduced is a current problem to be solved.

In view of the above technical problems, an embodiment of the present application provides a battery control circuit, in which a control module monitors an output voltage of a battery, and when the output voltage of the battery is smaller than a preset output voltage, a first discharge signal is sent to a voltage regulation module, the output voltage is boosted by the voltage regulation module to obtain a boosted voltage, so that a voltage value of the boosted voltage is larger than the preset output voltage, and is thus larger than a rated working voltage of a load, and the boosted voltage is reduced by a charge-discharge module to obtain a first discharge voltage, so that the first discharge voltage is close to the rated working voltage of the load, the load of an electric device can be driven to stably operate, the load is prevented from being damaged by an excessive voltage value, the stable release of the performance of the electric device is ensured when the discharge depth of the battery is reduced, and the overall performance, the operation stability and the operation safety of the electric device can be improved.

The battery control circuit provided by the embodiment of the application can be applied to terminal equipment provided with a battery. The terminal device may be a mobile phone, a tablet computer, a wearable device, a vehicle-mounted device, an augmented reality (augmented reality, AR)/Virtual Reality (VR) device, a notebook computer, an ultra-mobile personal computer (UMPC), a netbook, a personal digital assistant (personal digital assistant, PDA), or the like, and the embodiment of the present application does not limit the specific type of the terminal device.

Fig. 1 exemplarily shows a schematic structure of a terminal device 100, and the terminal device 100 may include a power module 110 and a load 120, the power module 110 may include a battery 111, and the load 120 may include a processor 10, a memory 20, an audio module 30, a camera module 40, a sensor module 50, an input module 60, a display module 70, a wireless communication module 80, and the like. The audio module 30 may include a speaker 31, a microphone 32, and the like, the camera module 40 may include a short-focus camera 41, a long-focus camera 42, a flash 43, and the like, the sensor module 50 may include an infrared sensor 51, an acceleration sensor 52, a position sensor 53, a fingerprint sensor 54, an iris sensor 55, and the like, the input module 60 may include a touch panel 61, an external input unit 62, and the like, and the Wireless communication module 80 may include Wireless communication units such as bluetooth, optical Wireless communication (Optical Wireless), mobile communication (Mobile Communications), wireless local area network (Wireless Local Area Network, WLAN), near field communication (Near Field Communication, NFC), and ZigBee (ZigBee).

In an application, the type of battery 111 may be a single cell battery depending on the number of cells; the battery can also be a multi-cell battery, in particular a double-cell battery; the material of the negative electrode of the battery can be a carbon material, and specifically can be an artificial graphite material or a natural graphite material; the material may be a non-carbon material, and specifically may be a silicon material, an alloy material, or the like. The embodiment of the present application does not set any limit to the specific type of the battery 111. The power module 110 may further include a fuel gauge (Coulomb Counter) that may be used to detect the remaining power of the battery 111, and may also be used to detect the output voltage of the battery 111. The power module 110 is used to supply power to the load 120 of the terminal device 100 through the battery 111.

In application, the processor 10 may be a central processing unit (Central Processing Unit, CPU), which may also be other general purpose processors, digital signal processors (Digital Signal Processor, DSPs), application specific integrated circuits (Application Specific Integrated Circuit, ASICs), off-the-shelf programmable gate arrays (Field-Programmable Gate Array, FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

In applications, the memory 20 may in some embodiments be an internal storage unit of the terminal device, such as a hard disk or a memory of the terminal device. The memory 20 may in other embodiments also be an external storage device of the terminal device, such as a plug-in hard disk provided on the terminal device, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash Card (Flash Card) or the like. Further, the memory 20 may also include both an internal storage unit of the terminal device and an external storage device. The memory 20 is used for storing an operating system, application programs, boot loader (BootLoader), data, and other programs, etc., such as program codes of computer programs, etc. The memory 20 may also be used to temporarily store data that has been output or is to be output.

It is to be understood that the structure illustrated in the embodiment of the present application does not constitute a specific limitation on the terminal device 100. In other embodiments of the application, terminal device 100 may include more or less components than shown, or may combine some components, or different components, such as may also include a graphics processor, etc. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

As shown in fig. 2, the battery control circuit 200 provided in the embodiment of the present application is applied to a terminal device 100, where the terminal device 100 includes a battery 111 and a load 120, and the battery control circuit 200 includes a charge/discharge module 210, a voltage regulation module 220, and a control module 230;

the control module 230 is respectively connected with the charge-discharge module 210 and the voltage regulating module 220;

the control module 230 is configured to connect to the battery 111, and send a first discharge signal to the voltage regulation module 220 when the output voltage of the battery 111 is less than a preset output voltage;

the voltage regulating module 220 is configured to be connected to the battery 111, receive an output voltage of the battery 111 according to the first discharge signal, boost the output voltage, obtain a boosted voltage, and send the boosted voltage to the charge/discharge module 210;

the charge-discharge module 210 is configured to be connected to the load 120, and when receiving the boost voltage, step down the boost voltage to obtain a first discharge voltage, and output the first discharge voltage to the load 120.

The following describes the hardware selection of the charge/discharge module 210, the voltage regulation module 220, and the control module 230 in the battery control circuit 200:

in application, the charge-discharge module 210 may be configured with at least one voltage reduction device, and may specifically be a voltage reduction device of different types, such as a voltage reduction DC/DC converter (Direct Current-Direct Current Converter), a voltage reduction capacitor, a resistor-capacitor voltage reducer, a Current limiting resistor, or a voltage reduction integrated chip.

In application, the voltage regulating module 220 may include at least one voltage reducing device and at least one voltage increasing device, or at least one voltage increasing and decreasing device, where the types of the voltage reducing device, the voltage increasing device and the voltage increasing and decreasing device are the same as those described above, and will not be described herein. The difference is that the voltage regulating module 220 can also select a voltage boosting and reducing Charge Pump (Charge Pump) as a voltage boosting and reducing device, so that the voltage boosting and reducing efficiency can be improved. Each buck device/boost device can realize different buck/boost multiples, or the buck/boost multiples of the buck device/boost device can be adjusted according to actual needs, so as to realize flexible buck/boost effects.

In applications, the control module 230 may be a central processing unit, but may also be other general purpose processors, digital signal processors, application specific integrated circuits, off-the-shelf programmable gate arrays or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The control module 230 may be connected to the processor 10 of the terminal device 100, or may directly multiplex the processor 10 of the terminal device 100.

In application, the battery control circuit 200 may be provided with an electricity meter, which is connected to the control module 230 and the battery 111, respectively, and the control module 230 may read the output voltage of the battery 111 collected by the electricity meter; the battery control circuit 200 may further be provided with a battery 111 management system (BatteryManagementSystem, BMS), the battery 111 management system is respectively connected with the control module 230 and the battery 111, and the control module 230 may read the output voltage of the battery 111 collected by the BMS; the control module 230 may also be integrated with an output voltage acquisition unit, and the control module 230 may read the output voltage of the battery 111 by directly connecting the battery 111.

The following describes the circuit operation principle of the charge/discharge module 210, the voltage regulation module 220, and the control module 230 in the battery control circuit 200:

in application, the output voltage of the battery 111 may fluctuate according to actual conditions, including the actual conditions such as the ambient temperature, the health of the battery 111, the remaining capacity of the battery 111, or the size of the load 120. The preset output voltage may be set according to the rated operating voltages of any one or any plurality of load 120 elements in the terminal device 100, for example, the preset output voltage may be greater than or equal to the rated operating voltages of all load 120 elements in the terminal device 100, and if the terminal device 100 is a mobile phone, the preset output voltage may be specifically 3.4V. When the output voltage of the battery 111 is less than the preset output voltage, which indicates that the actual operating voltage of the components of the terminal device 100 is less than the rated operating voltage, the control module 230 may send a first discharge signal to the voltage regulating module 220.

In application, after the voltage regulating module 220 receives the first discharge signal, the output voltage of the battery 111 may be received according to the first discharge signal, and the output voltage may be boosted to obtain a boosted voltage and sent to the charge/discharge module 210. The voltage adjusting module 220 may determine a specific boost ratio according to the output voltage of the battery 111 and the magnitude of the preset output voltage, and it should be noted that the boost voltage needs to be greater than the preset output voltage.

In application, when the charge-discharge module 210 receives the boost voltage, the boost voltage may be stepped down by a step-down device or a step-up-down device, to obtain a first discharge voltage and output to the load 120. The charge-discharge module 210 may determine a specific step-down multiple according to the step-up voltage and the magnitude of the preset output voltage, where it is noted that the first discharge voltage needs to be greater than or equal to the preset output voltage and less than the preset maximum voltage.

For example, assuming that the output voltage of the battery 111 is 3.0V, the preset output voltage is 3.4V, and the preset maximum voltage is 3.8V, the boosting rate needs to be greater than 17/15, the boosting rate may be specifically 2 times, the boosting voltage is obtained as 6.0V, the reducing rate needs to be greater than or equal to 17/30 and less than 19/30, the reducing rate may be specifically 17/30, and the first discharge voltage is obtained as 3.4V. The magnitude of the boosting multiple and the reducing multiple is not particularly limited in the embodiment of the present application.

In application, the control module 230 monitors the output voltage of the battery 111, when the output voltage of the battery 111 is smaller than a preset output voltage, a first discharge signal is sent to the voltage regulating module 220, the voltage regulating module 220 boosts the output voltage to obtain a boosted voltage, the voltage value of the boosted voltage is larger than the preset output voltage and is larger than the rated working voltage of the load 120, and the charge-discharge module 210 reduces the boosted voltage to obtain a first discharge voltage, so that the first discharge voltage is close to the rated working voltage of the load 120, the load 120 of the electric equipment can be driven to stably operate, the load 120 is prevented from being damaged by the excessive voltage value, the stable release of the performance of the electric equipment is ensured when the discharge depth of the battery 111 is reduced, and the overall performance, the operation stability and the operation safety of the electric equipment can be improved.

As shown in fig. 3, in one embodiment, based on the embodiment corresponding to fig. 2, the charge and discharge module 210 is further configured to be connected to the battery 111 and the power supply device 300, and to access a power supply voltage output by the power supply device 300;

the control module 230 is configured to:

detecting whether the power supply apparatus 300 supports a preset fast charge protocol;

when the power supply device 300 supports a preset fast charge protocol and the output voltage of the battery 111 is greater than or equal to the preset output voltage, sending a first charge signal to the voltage regulation module 220;

When the power supply device 300 does not support the preset fast charge protocol and the output voltage of the battery 111 is greater than or equal to the preset output voltage, sending a second charge signal to the charge-discharge module 210;

when the output voltage of the battery 111 is smaller than the preset output voltage, a third charging signal is sent to the charging and discharging module 210;

the voltage regulating module 220 is configured to receive a power supply voltage via the charge/discharge module 210 according to the first charging signal, step down the power supply voltage, obtain a first charging voltage, and output the first charging voltage to the battery 111;

the charge and discharge module 210 is configured to:

according to the second charging signal, the power supply voltage is reduced to obtain a second discharging voltage and output to the load 120, or the second discharging voltage is obtained and output to the load 120 and obtain a second charging voltage and output to the battery 111;

the power supply voltage is reduced according to the third charging signal, and the third charging voltage is obtained and output to the battery 111.

In application, the Power supply device 300 may be a Power Adapter (Power Adapter), a mobile Power supply (mobile Power Bank), or an external device supporting a reverse charging function. The charge and discharge module 210 may be used to connect with the power supply device 300 and access a power supply voltage output from the power supply device 300. The charge/discharge module 210 may be further configured with at least one boost device when connected to the power supply apparatus 300, and may specifically be a boost device of a different type such as a boost DC/DC converter, a boost voltage stabilizer, or a boost integrated chip, or may be configured with a boost device of a different type such as at least one boost DC/DC converter or a boost integrated chip. In addition, the charge-discharge module 210 may be further configured with an overvoltage protection unit, which is configured to step down or block voltage input when the voltage input to the charge-discharge module 210 is too large, so as to avoid damage caused by direct reception of high voltage by the voltage step-up device, the voltage step-down device or the voltage step-up/down device of the charge-discharge module 210; the charge and discharge module 210 may be further configured with a voltage stabilizing unit for stabilizing a discharge voltage or a charge voltage input to the load 120 or the battery 111, reducing interference and improving stability of charge and discharge.

In application, when the charge and discharge module 210 is connected to the power supply device 300, the control module 230 may read parameters of the power supply device 300 via the charge and discharge module 210, including whether to support a preset fast charge protocol and the magnitude of the power supply voltage; the control module 230 may determine the charging mode according to the magnitude of the output voltage of the battery 111 and whether the power supply device 300 supports a preset fast charge protocol. Specifically, when the power supply apparatus 300 supports a preset fast charge protocol and the output voltage of the battery 111 is greater than or equal to the preset output voltage, a first charging signal is sent to the voltage regulation module 220; when the power supply device 300 does not support the preset fast charge protocol and the output voltage of the battery 111 is greater than or equal to the preset output voltage, sending a second charge signal to the charge-discharge module 210; when the output voltage of the battery 111 is smaller than the preset output voltage, a third charging signal is sent to the charging/discharging module 210. The following describes the circuit operation principle of the battery control circuit 200 in three charging modes, respectively:

in application, when the power supply device 300 supports a preset fast charging protocol and the output voltage of the battery 111 is greater than or equal to the preset output voltage, it is indicated that the current battery control circuit 200 may charge the battery 111 in the fast charging mode, the control module 230 sends a first charging signal to the voltage regulating module 220, the voltage regulating module 220 receives the power supply voltage via the charging and discharging module 210 according to the first charging signal, at this time, the charging and discharging module 210 will not process the power supply voltage, the voltage regulating module 220 steps down the power supply voltage through the step-down device, and since the voltage is reduced and the current is increased when the power is kept unchanged, the fast charging of the battery 111 may be achieved in a low-voltage and high-current manner when the first charging voltage is obtained and is output to the battery 111;

When the power supply device 300 does not support the preset fast charge protocol and the output voltage of the battery 111 is greater than or equal to the preset output voltage, it is indicated that the current battery control circuit 200 may charge the battery 111 in the normal charge mode, the control module 230 sends a second charge signal to the charge-discharge module 210, the charge-discharge module 210 receives the power supply voltage according to the second charge signal and processes the power supply voltage, at this time, the voltage regulation module 220 does not receive the power supply voltage, by reducing the output voltage of the battery 111 (typically, the output voltage of the battery 111 is greater, for example, 5V,12V,18V or 20V, etc., if the output voltage is directly input into the load 120 or the battery 111 easily to cause overvoltage damage, the output voltage needs to be reduced to avoid the output voltage from being directly input into the load 120 or the battery 111), so as to obtain a second discharge voltage and output to the load 120, so that the second discharge voltage approaches the preset output voltage, or so as to obtain the second discharge voltage and output to the load 120 and output to the battery 111, so as to realize trickle charge, so as to avoid that the temperature of the battery 111 is too high during charging, and the service life of the battery 111 is affected;

when the output voltage of the battery 111 is smaller than the preset output voltage, it indicates that the current battery 111 needs to be pre-charged to increase the output voltage of the battery 111, and the control module 230 sends a third charging signal to the charging and discharging module 210, so as to charge the battery 111 in the pre-charging mode, the charging and discharging module 210 receives the power supply voltage according to the third charging signal and processes the power supply voltage, at this time, the voltage regulating module 220 does not receive the power supply voltage, and by reducing the output voltage of the battery 111, the third charging voltage is obtained and output to the battery 111, where the voltage value of the third charging voltage may be equal to the preset pre-charging voltage. It should be noted that when the output voltage of the battery 111 is smaller than the preset output voltage, the remaining capacity of the battery 111 is generally lower, and the battery 111 needs to be pre-charged until the output voltage of the battery 111 is increased to the preset output voltage, so as to avoid a decrease in the lifetime of the battery 111 caused by a direct input of a larger voltage or current into the battery 111. The magnitude of the preset precharge voltage can be set according to the preset output voltage, and the preset precharge voltage can be smaller than the preset output voltage.

In one embodiment, the charge-discharge module 210 is configured to:

detecting whether the power supply voltage is greater than or equal to a preset power supply voltage according to the second charging signal;

when the power supply voltage is greater than the preset power supply voltage, the power supply voltage is reduced to obtain a second discharge voltage and output the second discharge voltage to the load 120, and a second charge voltage is obtained and output to the battery 111;

when the power supply voltage is equal to the preset power supply voltage, the power supply voltage is reduced to obtain a second discharge voltage, and the second discharge voltage is output to the load 120;

when the power supply voltage is smaller than the preset power supply voltage, the power supply voltage is reduced to obtain a second discharge voltage, the second discharge voltage is output to the load 120, and an auxiliary discharge signal is sent to the control module 230;

the control module 230 is configured to control the battery 111 to output an auxiliary discharge voltage to the charge-discharge module 210 according to the auxiliary discharge signal, so as to increase the voltage value of the second discharge voltage.

In application, when the battery control circuit 200 charges the battery 111 in the normal charging mode, the battery control circuit further includes a first normal charging mode, a second normal charging mode and a third normal charging mode according to the magnitude relation between the power supply voltage and the preset power supply voltage, and the following three normal charging modes are described below:

In application, the charge-discharge module 210 may compare the magnitude relation between the power supply voltage and the preset power supply voltage according to the second charging signal, and determine the type of the common charging mode;

when the power supply voltage is greater than the preset power supply voltage, it indicates that the current power supply voltage is sufficiently large to simultaneously supply power to the load 120 and charge the battery 111, the battery control circuit 200 operates in the first normal charging mode, and the charge-discharge module 210 steps down and divides the power supply voltage to obtain a second discharge voltage and outputs the second discharge voltage to the load 120, and obtains a second charge voltage and outputs the second charge voltage to the load 120. It should be noted that, when the battery control circuit 200 operates in the normal charging mode, the charging and discharging module 210 may convert the power voltage into the second discharging voltage preferentially, so as to ensure the stable release of the performance of the load 120, and convert the residual voltage into the second charging voltage, where the second discharging voltage needs to be greater than or equal to the preset output voltage and less than the preset maximum voltage;

when the power supply voltage is equal to the preset power supply voltage, only the load 120 can be powered, the battery control circuit 200 works in the second normal charging mode, and the charging and discharging module 210 steps down the power supply voltage to obtain a second discharging voltage and outputs the second discharging voltage to the load 120;

When the power supply voltage is smaller than the preset power supply voltage, a sufficient voltage value cannot be provided to enable the load 120 to work under the rated working voltage, the battery control circuit 200 works in the third common charging mode, the charging and discharging module 210 steps down the power supply voltage to obtain a second discharging voltage and outputs the second discharging voltage to the load 120, meanwhile, an auxiliary discharging signal is sent to the control module 230, and the control module 230 controls the battery 111 to output the auxiliary discharging voltage to the charging and discharging module 210 according to the auxiliary discharging signal so as to improve the voltage value of the second discharging voltage, so that the second discharging voltage can reach the preset output voltage, and the stable release of the performance of the load 120 is ensured.

In application, when the battery control circuit 200 operates in the normal charging mode, the power supply voltage can be preferentially converted into the second discharging voltage, so as to ensure the stable release of the performance of the load 120, and when the power supply voltage has a margin, the residual voltage can be converted into the second discharging voltage, so that the power supply conversion efficiency is improved; when the power supply voltage is insufficient, the auxiliary discharge voltage can be supplemented by the battery 111, so that the second discharge voltage can reach the preset output voltage, and the stable release of the performance of the load 120 is ensured, thereby improving the overall performance and the working stability of the terminal device 100.

In one embodiment, the control module 230 is further configured to send a second discharge signal to the charge-discharge module 210 when the output voltage of the battery 111 is greater than or equal to the preset output voltage;

the charge-discharge module 210 is configured to process the output voltage according to the second discharge signal, obtain a third discharge voltage, and output the third discharge voltage to the load 120.

In application, the control module 230 may determine the discharge mode based on the magnitude of the output voltage of the battery 111. Specifically, when the output voltage of the battery 111 is less than the preset output voltage, the first discharging signal is sent to the voltage regulating module 220, and the battery control circuit 200 operates in the low-voltage discharging mode; when the output voltage of the battery 111 is greater than or equal to the preset output voltage, the second discharging signal is sent to the charging and discharging module 210, and the battery control circuit 200 operates in the high-voltage discharging mode. The circuit operation principle of the low-voltage discharge mode may be described with reference to the embodiment corresponding to fig. 2.

In application, when the battery control circuit 200 operates in the high-voltage discharging mode, the charge-discharge module 210 can detect whether the output voltage is greater than or equal to a preset maximum voltage according to the second discharging signal, and step down the output voltage when the output voltage is greater than or equal to the preset maximum voltage, so as to obtain a third discharging signal and output the third discharging signal to the load 120, so as to avoid overvoltage damage caused by directly outputting the excessive output voltage to the load 120; when the output voltage is smaller than the preset maximum voltage, the output voltage can be directly output to the load 120, or the output voltage can be processed by the voltage stabilizing unit to obtain a third discharge voltage and output to the load 120, so as to improve the stability of the third discharge voltage.

It should be noted that, when the output voltage of the battery 111 is greater than or equal to the preset output voltage, the battery control circuit 200 may charge the battery 111 in the fast charge mode and supply the load 120 in the high voltage discharge mode at the same time; when the output voltage of the battery 111 is greater than or equal to the preset output voltage, the battery control circuit 200 may operate in the normal charging mode at the same time, and according to the magnitude relation between the power supply voltage and the preset power supply voltage, may discharge the load 120 and charge the battery 111 at the same time, may supply power to only the load 120, and may supply power to the load 120 through the power supply voltage and the output voltage at the same time; when the output voltage of the battery 111 is less than the preset output voltage, the battery control circuit 200 may simultaneously charge the battery 111 in the precharge mode and supply power to the load 120 in the low-voltage discharge mode.

In application, the control module 230 detects whether the power supply device 300 supports a preset fast charge protocol, and detects the relationship between the output voltage of the battery 111 and the preset output voltage, and matches the best working mode under different working conditions, so as to realize flexible adjustment of the working mode of the battery control circuit 200, and improve the power supply conversion efficiency, the charging efficiency and the discharging efficiency.

As shown in fig. 4, in one embodiment, based on the embodiment corresponding to fig. 3, the voltage regulating module 220 includes a voltage boosting unit 221 and a voltage reducing unit 222;

a first end of the voltage boosting unit 221 and a first end of the voltage reducing unit 222 are connected with a first end of the charge and discharge module 210, a second end of the voltage boosting unit 221 and a second end of the voltage reducing unit 222 are connected with a second end of the charge and discharge module 210, and a control end of the voltage boosting unit 221 and a control end of the voltage reducing unit 222 are connected with the control module 230; a second terminal of the step-up unit 221 and a second terminal of the step-down unit 222 are for connection with the battery 111;

a second terminal of the step-up unit 221 is for receiving the output voltage of the battery 111, and a first terminal of the step-down unit 222 is for receiving the power supply voltage via the charge-discharge module 210;

the boost unit 221 is configured to receive the output voltage according to the first discharge signal, boost the output voltage, obtain a boosted voltage, and send the boosted voltage to the charge-discharge module 210;

the step-down unit 222 is configured to receive a power supply voltage according to the first charging signal, step down the power supply voltage, obtain a first charging voltage, and output the first charging voltage to the battery 111.

It should be noted that, the first end of the voltage boosting unit 221 and the first end of the voltage reducing unit 222 form the first end of the voltage regulating module 220, the second end of the voltage boosting unit 221 and the second end of the voltage reducing unit 222 form the second end of the voltage regulating module 220, and the control end of the voltage boosting unit 221 and the control end of the voltage reducing unit 222 are multiplexed as the control end of the voltage regulating module 220 in fig. 4.

In an application, the voltage regulating module 220 may include a voltage boosting unit 221 and a voltage reducing unit 222, where the voltage boosting unit 221 may be formed of a voltage boosting device such as a voltage boosting type DC/DC converter or a voltage boosting charge pump, and the voltage reducing unit 222 may be formed of a voltage reducing device such as a voltage reducing type DC/DC converter or a voltage reducing charge pump.

In application, the boost unit 221 is configured to, after receiving the first discharge signal, receive the output voltage of the battery 111 according to the first discharge signal, boost the output voltage, obtain a boosted voltage, and send the boosted voltage to the charge-discharge module 210. The boost ratio may be set with reference to the related description of the above embodiments, and will not be described herein.

In application, the voltage step-down unit 222 is configured to receive the power supply voltage via the charge-discharge module 210 according to the first charging signal, at this time, the charge-discharge module 210 will not process the power supply voltage, and the voltage step-down unit 222 steps down the power supply voltage, so that when the power remains unchanged, the voltage is reduced and the current is increased, and thus the first charging voltage is obtained and output to the battery 111, the battery 111 can be rapidly charged in a low-voltage and high-current manner.

In application, when the step-up unit 221 adopts a step-up voltage pump and the step-down unit 222 adopts a step-down voltage pump, the step-down voltage module 220 can select the step-up voltage pump to realize a step-up/step-down function, and compared with a step-up/step-down DC/DC converter, the step-up/step-down voltage module can improve voltage conversion efficiency, and can also reduce rated current of a power inductor in a step-up/step-down device, thereby reducing volume of the power inductor, reducing occupied area in a main board, improving wiring flexibility of the terminal device 100 and reducing voltage loss of the terminal device 100.

As shown in fig. 5, in one embodiment, based on the embodiment corresponding to fig. 3, the device further includes a protection module 240, where the protection module 240 is connected to the charge and discharge module 210 and the voltage regulation module 220, respectively;

the control module 230 is configured to:

when the output voltage of the battery 111 is smaller than the preset output voltage, sending a shutdown signal to the voltage regulating module 220;

when the output voltage of the battery 111 is greater than or equal to the preset output voltage, sending a turn-on signal to the voltage regulating module 220;

the voltage regulating module 220 is configured to:

controlling the protection module 240 to be turned off according to the turn-off signal;

controlling the protection module 240 to be turned on according to the turn-on signal;

the protection module 240 is configured to:

receiving the boosted voltage and transmitting to the charge-discharge module 210 at the time of turn-off, and blocking the boosted voltage from being transmitted to the power supply apparatus 300;

the power supply voltage outputted from the power supply device 300 is connected when turned on, and is transmitted to the charge and discharge module 210.

In application, the battery control circuit 200 may also be provided with a protection module 240, the protection module 240 being arranged between the charge-discharge module 210 and the voltage regulation module 220. The protection module 240 may include at least one electronic switch, which may be a device or circuit having an electronic switching function, for example, a transistor, a thin film field effect transistor (Thin Film Transistor, TFT) or a composite logic gate circuit, and in particular, may be a metal oxide semiconductor field effect transistor (Metal Oxide Semiconductor Field Effect Transistor, MOSFET). The circuit operation principle of the protection module 240 is described as follows:

In application, the control module 230 may detect the output voltage of the battery 111 in real time, and when the output voltage of the battery 111 is smaller than a preset output voltage, the battery control circuit 200 may operate the precharge mode and the low-voltage discharge mode at the same time, and at this time, the control module 230 may control the protection module 240 to be turned off by sending a turn-off signal to the voltage regulation module 220, and the protection module 240 may receive the boost voltage and send the boost voltage to the charge-discharge module 210 and block the boost voltage from being sent to the power supply device 300, thereby avoiding the boost voltage from being reversely output to the power supply device 300 and improving the power consumption safety. It should be noted that, when the protection module 240 is turned off, the battery control circuit 200 may receive the power voltage through the charge/discharge module 210 and charge the battery 111 in the precharge mode.

In application, when the output voltage of the battery 111 is greater than or equal to the preset output voltage, the battery control circuit 200 may operate in the fast charge mode and the high voltage discharge mode at the same time, or may operate in the normal charge mode or operate in the high voltage discharge mode only, at this time, the control module 230 may send a conducting signal to the voltage regulating module 220, the voltage regulating module 220 controls the protection module 240 to conduct, and the protection module 240 may access the power voltage output by the power device 300 and send the power voltage to the charge/discharge module 210, so that the battery control circuit 200 may be stably connected to the power voltage sent by the power device 300.

As shown in fig. 6, in one embodiment, based on the embodiment corresponding to fig. 4 and 5, the voltage regulating module 220 further includes a protection module switch 223, a first end of the protection module switch 223 is connected to the protection module 240, and a second end of the protection module switch 223 is connected to the control module 230;

the protection module switch 223 is configured to:

the protection module 240 is controlled to be turned on according to the turn-on signal.

In fig. 6, the second terminal of the protection module 240, the control terminal of the voltage boosting unit 221, and the control terminal of the voltage reducing unit 222 are multiplexed and connected to the control module 230.

In application, the voltage regulation module 220 may further include a protection module switch 223, and the protection module switch 223 may control the protection module 240 to turn off in response to the turn-off signal and control the protection module 240 to turn on in response to the turn-on signal. The protection module 240 may be turned on at a low level and turned off at a high level; or may be turned on at a high level and turned off at a low level. When the protection module switch 223 needs to output a high level to control the on-off state of the protection module 240, a high level signal may be output according to the off signal or the on signal, the voltage (for example, 12V) of the high level signal is generally higher than the maximum voltage value (for example, 5V) that the control module 230 may output, and the protection module switch 223 may generate the high level signal through the boost unit 221, and the control stability of the protection module 240 may be improved by controlling the on-off state of the protection module 240 through the protection module switch 223, thereby improving the working stability of the battery control circuit 200.

As shown in fig. 7, in one embodiment, based on the embodiment corresponding to fig. 3, the charge/discharge module 210 includes a charge port 211, a discharge port 212, a charge/discharge unit 213, and an auxiliary charge unit;

the first end of the charging port 211 is respectively connected with the first end of the charging and discharging unit 213, the first end of the auxiliary charging unit and the first end of the voltage regulating module 220, the second end of the charging and discharging unit 213 is respectively connected with the first end of the discharging port 212, the second end of the auxiliary charging unit and the second end of the voltage regulating module 220, and the control end of the charging and discharging unit 213 and the control end of the auxiliary charging unit are connected with the control module 230; a second end of the charge and discharge unit 213 and a second end of the auxiliary charge unit are connected to the battery 111, a second end of the charge port 211 is connected to the power supply device 300, and a second end of the discharge port 212 is connected to the load 120;

the second end of the charging port 211 is used for accessing the power supply voltage output by the power supply device 300, the first end of the charging port 211 is used for sending the power supply voltage to the first end of the charging and discharging unit 213, the first end of the auxiliary charging unit or the first end of the voltage regulating module 220, the control end of the charging and discharging unit 213 is used for receiving the second charging signal, and the control end of the auxiliary charging unit is used for receiving the third charging signal;

The charge-discharge unit 213 is configured to receive a power supply voltage according to the second charge signal, step down the power supply voltage to obtain a second discharge voltage and output the second discharge voltage to the load 120, or obtain a second discharge voltage and output the second discharge voltage to the load 120 and obtain a second charge voltage and output the second charge voltage to the battery 111;

the auxiliary charging unit is configured to receive the power supply voltage according to the third charging signal, step down the power supply voltage, obtain a third charging voltage, and output the third charging voltage to the battery 111.

Note that, the first end of the charge/discharge unit 213 and the first end of the auxiliary charge unit constitute a first end of the charge/discharge module 210, the second end of the charge/discharge unit 213 and the first end of the auxiliary charge unit constitute a second end of the charge/discharge module 210, and in fig. 7, the control ends of the charge/discharge unit 213 and the auxiliary discharge unit 214 are multiplexed and connected to the control module 230.

In an application, the charge-discharge module 210 may include a charge port 211, a discharge port 212, a charge-discharge unit 213, and an auxiliary discharge unit 214, where the charge port 211 is used to access a power supply voltage output by the power supply device 300; the discharge port 212 is used for outputting a second discharge voltage to the load 120; the charge-discharge unit 213 is configured to step down the power supply voltage when the normal charge mode is operated, obtain a second discharge voltage and output the second discharge voltage to the load 120, or obtain a second discharge voltage and output the second discharge voltage to the load 120 and obtain a second charge voltage and output the second charge voltage to the battery 111; the auxiliary charging unit is used for reducing the power supply voltage when the precharge mode is operated, and a third charging signal is obtained and output to the battery 111.

In one embodiment, the charge/discharge unit 213 is configured to, when receiving the boosted voltage at the first end of the charge/discharge unit 213, step down the boosted voltage to obtain a first discharge voltage and output the first discharge voltage to the discharge port 212.

In application, when the boost unit 221 sends the boost unit 221 to the charge-discharge module 210, the charge-discharge module 210 invokes the charge-discharge unit 213 to step down the boost unit 221 to execute the low-voltage discharge mode, and the specific step-down method and the step-down effect may refer to the related descriptions of the above embodiments, which are not repeated herein.

In one embodiment, the control module 230 is configured to control the battery 111 to output the auxiliary discharge voltage to the second terminal of the charge-discharge unit 213 according to the auxiliary discharge signal, so as to increase the voltage value of the second discharge voltage.

In application, when the control module 230 controls the battery 111 to output the auxiliary discharge voltage to the charge-discharge module 210 according to the auxiliary discharge signal, the charge-discharge module 210 controls the auxiliary discharge voltage to be output to the charge-discharge unit 213, so as to achieve the improvement of the voltage value of the second discharge voltage.

In application, when the output voltage is greater than or equal to the preset output voltage, the charging and discharging unit 213 is used for reducing the power supply voltage in the normal charging mode, and when the output voltage is less than the preset output voltage, the auxiliary charging unit is used for reducing the power supply voltage, so that the battery control circuit 200 can flexibly call the charging and discharging unit 213 and the auxiliary charging unit according to the magnitude of the power supply voltage, and flexible switching between the normal charging mode and the pre-charging mode is realized.

As shown in fig. 8, in one embodiment, based on the embodiment corresponding to fig. 7, a first end of the charging port 211 is connected to a first end of the protection module 240, and a first end of the charging/discharging unit 213 and a first end of the auxiliary charging unit are connected to a second end of the protection module 240;

the protection module 240 is configured to:

receiving the boosted voltage and transmitting to the charge-discharge unit 213 at the time of turn-off, and blocking the boosted voltage from being transmitted to the power supply apparatus 300;

the power supply voltage outputted from the power supply device 300 is turned on and transmitted to the charge and discharge unit 213 or the step-down unit 222.

In fig. 8, the control terminal of the voltage boosting unit 221, the control terminal of the voltage reducing unit 222, and the second terminal of the protection module switch 223 are multiplexed as the control terminal of the voltage regulating module 220, and the control terminals of the charge/discharge unit 213 and the auxiliary discharge unit 214 are multiplexed.

In application, the protection module 240 may receive the boost voltage and transmit to the charge and discharge unit 213 when turned off and block the boost voltage from being transmitted to the power supply apparatus 300 without affecting the power supply voltage input to the auxiliary discharge unit 214, so that the battery control circuit 200 may operate the precharge mode and the low voltage discharge mode at the same time.

In application, the protection module 240 may access the power voltage output by the power device 300 when turned on and send the power voltage to the charge and discharge unit 213, so that the battery control circuit 200 may operate the fast charge mode and the high voltage discharge mode at the same time.

In one embodiment, the charge-discharge unit 213 includes a charge-discharge unit 213 switch 2131, the auxiliary discharge unit 214 includes an auxiliary discharge unit 214 switch 2131, and the charge-discharge unit 213 switch 2131 and the auxiliary discharge unit 214 switch 2131 are connected to the control module 230;

the charge and discharge unit 213 switch 2131 is used to control the on-off state of the charge and discharge unit 213 and the battery 111;

the auxiliary discharge unit 214 switch 2131 is used to control the on-off state of the auxiliary discharge unit 214 and the battery 111.

In application, the switch 2131 of the charging and discharging unit 213 and the switch 2131 of the auxiliary discharging unit 214 may be electronic switches, and the electronic switches may be referred to the above related description and will not be described herein.

In application, the control module 230 may control the on-off state of the switch 2131 of the charge/discharge unit 213 to control the on-off state of the charge/discharge unit 213 and the battery 111, specifically, when the switch 2131 of the charge/discharge unit 213 is turned on, the charge/discharge unit 213 is connected to the battery 111, and when the switch 2131 of the charge/discharge unit 213 is turned off, the charge/discharge unit 213 is disconnected from the battery 111. The control module 230 may also control the on-off state of the switch 2131 of the auxiliary discharging unit 214 to control the on-off state of the auxiliary discharging unit 214 and the battery 111, specifically, when the switch 2131 of the auxiliary discharging unit 214 is turned on, the auxiliary discharging unit 214 is connected to the battery 111, and when the switch 2131 of the auxiliary discharging unit 214 is turned off, the auxiliary discharging unit 214 is disconnected from the battery 111.

In application, when the battery control circuit 200 operates in the high-voltage discharging mode and the fast charging mode, the switch 2131 of the auxiliary discharging unit 214 is turned off, so that the output voltage is prevented from being reversely output to the discharging port 212 through the auxiliary discharging unit 214 in the high-voltage discharging mode; it is also possible to avoid that the power supply voltage is output to the battery 111 via the auxiliary discharging unit 214 in the fast charge mode, affecting the efficiency of the fast charge.

In application, when the battery control circuit 200 is operated in the low-voltage discharging mode, the switch 2131 of the charging and discharging unit 213 may be turned off, so as to avoid inputting the first discharging voltage obtained by the processing to the battery 111 after the charging and discharging unit 213 receives the boosted voltage, thereby avoiding a loop that causes discharging and charging cycles of the battery 111, and improving the working stability of the battery control circuit 200.

Fig. 9 exemplarily shows a structure diagram when the charge and discharge unit 213 includes a charge and discharge unit 213 switch 2131, the auxiliary discharge unit 214 includes an auxiliary discharge unit 214 switch 2131, and the protection module 240 employs a MOS transistor.

As shown in fig. 10, the battery control method provided by the embodiment of the present application is applied to the control module of the battery control circuit provided by the above embodiment, and includes the following steps S1001 to S1003:

Step S1001, when the output voltage of the battery is smaller than a preset output voltage, a first discharging signal is sent to the voltage regulating module;

step S1002, receiving an output voltage of a battery through a voltage regulating module according to a first discharging signal, boosting the output voltage to obtain a boosted voltage, and sending the boosted voltage to a charging and discharging module;

step S1003, receiving the boosted voltage by the charge-discharge module, and reducing the boosted voltage to obtain a first discharge voltage and outputting the first discharge voltage to the load.

In application, the battery control method implemented by the control module of the battery control circuit may refer to the related description of the above embodiment, and will not be described herein.

It should be understood that the sequence number of each step in the foregoing embodiment does not mean that the execution sequence of each process should be determined by the function and the internal logic, and should not limit the implementation process of the embodiment of the present application.

Embodiments of the present application also provide a computer-readable storage medium storing a computer program that, when executed by a processor, implements steps that may be implemented in the various battery control method embodiments described above.

In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.

Those of ordinary skill in the art will appreciate that the various illustrative modules and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiments provided in the present application, it should be understood that the disclosed terminal device and method may be implemented in other manners. For example, the above-described embodiments of the terminal device are merely illustrative, and for example, the division of the modules is merely a logical function division, and there may be other manners of division in actual implementation, for example, multiple modules or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection via interfaces, devices or modules, which may be in electrical, mechanical or other forms.

The above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.

Claims

1. The battery control circuit is applied to terminal equipment, and the terminal equipment comprises a battery and a load, and is characterized by comprising a charge-discharge module, a voltage regulation module and a control module;

2. The battery control circuit of claim 1, wherein the charge-discharge module is further configured to connect to the battery and a power device and to access a power supply voltage output by the power device;

the control module is used for:

detecting whether the power supply equipment supports a preset fast charging protocol or not;

when the power supply equipment supports a preset fast charge protocol and the output voltage of the battery is greater than or equal to a preset output voltage, a first charging signal is sent to the voltage regulating module;

when the power supply equipment does not support a preset fast charge protocol and the output voltage of the battery is greater than or equal to a preset output voltage, a second charge signal is sent to the charge-discharge module;

when the output voltage of the battery is smaller than a preset output voltage, a third charging signal is sent to the charging and discharging module;

the voltage regulating module is used for receiving the power supply voltage through the charging and discharging module according to the first charging signal, reducing the power supply voltage to obtain a first charging voltage and outputting the first charging voltage to the battery;

The charging and discharging module is used for:

reducing the power supply voltage according to the second charging signal to obtain a second discharging voltage and outputting the second discharging voltage to the load, or obtaining a second discharging voltage and outputting the second discharging voltage to the load and obtaining a second charging voltage and outputting the second discharging voltage to the battery;

and according to the third charging signal, reducing the power supply voltage to obtain a third charging voltage and outputting the third charging voltage to the battery.

3. The battery control circuit of claim 2, wherein the charge-discharge module is to:

when the power supply voltage is larger than the preset power supply voltage, the power supply voltage is reduced to obtain the second discharging voltage and output the second discharging voltage to the load, and the second charging voltage is obtained and output to the battery;

when the power supply voltage is equal to the preset power supply voltage, reducing the power supply voltage to obtain a second discharge voltage and outputting the second discharge voltage to the load;

when the power supply voltage is smaller than the preset power supply voltage, the power supply voltage is reduced to obtain a second discharge voltage, the second discharge voltage is output to the load, and an auxiliary discharge signal is sent to the control module;

The control module is used for controlling the battery to output auxiliary discharge voltage to the charge-discharge module according to the auxiliary discharge signal so as to improve the voltage value of the second discharge voltage.

4. The battery control circuit of claim 2, further comprising a protection module connected to the charge and discharge module and the voltage regulation module, respectively;

the control module is used for:

when the output voltage of the battery is smaller than a preset output voltage, a turn-off signal is sent to the voltage regulating module;

when the output voltage of the battery is greater than or equal to a preset output voltage, a conduction signal is sent to the voltage regulating module;

the voltage regulating module is used for:

controlling the protection module to be turned off according to the turn-off signal;

controlling the protection module to be conducted according to the conduction signal;

the protection module is used for:

receiving the boosted voltage and sending the boosted voltage to the charge-discharge module when the power supply is turned off, and blocking the boosted voltage from being sent to the power supply equipment;

and when the power supply is conducted, the power supply voltage output by the power supply equipment is connected and sent to the charging and discharging module.

5. The battery control circuit according to any one of claims 1 to 4, wherein the voltage regulating module includes a voltage boosting unit and a voltage reducing unit;

The first end of the voltage boosting unit and the first end of the voltage reducing unit are connected with the first end of the charge-discharge module, the second end of the voltage boosting unit and the second end of the voltage reducing unit are connected with the second end of the charge-discharge module, and the control end of the voltage boosting unit and the control end of the voltage reducing unit are connected with the control module; the second end of the voltage boosting unit and the second end of the voltage reducing unit are used for being connected with the battery;

the second end of the step-up unit is used for receiving the output voltage of the battery, and the first end of the step-down unit is used for receiving the power supply voltage through the charge-discharge module;

the boosting unit is used for receiving the output voltage according to the first discharge signal, boosting the output voltage to obtain a boosted voltage and sending the boosted voltage to the charge-discharge module;

the voltage reducing unit is used for receiving the power supply voltage according to a first charging signal, reducing the power supply voltage to obtain a first charging voltage and outputting the first charging voltage to the battery.

6. The battery control circuit of claim 5, wherein the voltage regulation module further comprises a protection module switch, a first end of the protection module switch being connected to the protection module, a second end of the protection module switch being connected to the control module;

The protection module switch is used for:

controlling the protection module to be turned off according to a turn-off signal;

and controlling the conduction of the protection module according to the conduction signal.

7. The battery control circuit according to any one of claims 1 to 4, wherein the charge-discharge module includes a charge port, a discharge port, a charge-discharge unit, and an auxiliary charge unit;

the first end of the charging port is respectively connected with the first end of the charging and discharging unit, the first end of the auxiliary charging unit and the first end of the voltage regulating module, the second end of the charging and discharging unit is respectively connected with the first end of the discharging port, the second end of the auxiliary charging unit and the second end of the voltage regulating module, and the control end of the charging and discharging unit and the control end of the auxiliary charging unit are connected with the control module; the second end of the charging and discharging unit and the second end of the auxiliary charging unit are used for being connected with the battery, the second end of the charging port is used for being connected with a power supply device, and the second end of the discharging port is used for being connected with the load;

the second end of the charging port is used for accessing the power supply voltage output by the power supply device, the first end of the charging port is used for sending the power supply voltage to the first end of the charging and discharging unit, the first end of the auxiliary charging unit or the first end of the voltage regulating module, the control end of the charging and discharging unit is used for receiving a second charging signal, and the control end of the auxiliary charging unit is used for receiving a third charging signal;

The charging and discharging unit is used for receiving the power supply voltage according to the second charging signal, reducing the power supply voltage to obtain a second discharging voltage and outputting the second discharging voltage to the load, or obtaining a second discharging voltage and outputting the second discharging voltage to the load and obtaining a second charging voltage and outputting the second charging voltage to the battery;

the auxiliary charging unit is used for receiving the power supply voltage according to the third charging signal, reducing the power supply voltage to obtain a third charging voltage and outputting the third charging voltage to the battery.

8. A terminal device, comprising a battery, a load and a battery control circuit according to any one of claims 1 to 7, wherein the battery is connected to a charge-discharge module, a voltage regulation module and a control module, respectively, and the load is connected to the battery and the charge-discharge module, respectively.

9. A battery control method applied to the control module of the battery control circuit according to any one of claims 1 to 7, characterized by comprising:

10. A computer-readable storage medium storing a computer program, characterized in that the computer program, when being executed by a processor, implements the steps of the circuit control method according to claim 9.