Battery management method and device, vehicle and electronic equipment

Abstract

The invention provides a battery management method and device, a vehicle and electronic equipment, and relates to the technical field of batteries, and the main technical scheme comprises the steps: obtaining the current battery charge state of a target battery; when it is determined that the current state of charge of the battery exceeds a preset state threshold value, the standing time of the target battery maintained in the current state of charge of the battery is obtained; and when it is determined that the standing time exceeds a preset time threshold value, controlling the target battery to perform automatic discharging. Compared with the prior art, according to the embodiment of the invention, the SOC state of the target battery and the storage time of the target battery in the high SOC state are automatically reduced by judging the current battery charge state and the standing time of the current battery charge state, so that the side reaction of the electrolyte and the positive electrode material and the phase change degree of the battery material are reduced; and the cycle life of the target battery is prolonged.

Description

Technical Field

[0001] The present disclosure relates to the field of battery technology, and in particular to a battery management method and device, a vehicle, and an electronic device. Background Art

[0002] Batteries are part of our daily lives, such as mobile phone batteries, computer batteries, and batteries for many commonly used power tools, such as toy batteries, robot batteries, and especially electric vehicles, the core of their power systems includes power batteries.

[0003] Taking power batteries as an example, the high state of charge (SOC) of a power battery refers to the available state of the remaining charge in the power battery. If the power battery is stored for a long time in a high SOC state, the side reaction between the electrolyte and the positive electrode material will be intensified, and the positive electrode material will also undergo phase change. Therefore, the long-term high SOC state of the power battery will affect the cycle life of the power battery. Summary of the Invention

[0004] The present disclosure provides a battery management method and device, a vehicle, and an electronic device. Its main purpose is to solve the problem that long-term storage of power batteries at high SOC will affect the cycle life of the power batteries.

[0005] According to a first aspect of the present disclosure, a battery management method is provided, comprising:

[0006] Get the current battery state of charge of the target battery;

[0007] When it is determined that the current battery state of charge exceeds a preset state threshold, obtaining a rest time during which the target battery maintains the current battery state of charge;

[0008] When it is determined that the rest time exceeds a preset time threshold, the target battery is controlled to automatically discharge.

[0009] Optionally, before obtaining the rest time during which the target battery maintains the current battery state of charge, the method includes:

[0010] Determining whether the current battery state of charge exceeds a preset state threshold;

[0011] The step of obtaining the stationary time during which the target battery maintains the current battery state of charge includes:

[0012] When it is determined that the current battery state of charge exceeds a preset state threshold, a rest time during which the target battery maintains the current battery state of charge is obtained.

[0013] Optionally, controlling the target battery to automatically discharge includes:

[0014] Based on the resistance of the active discharge circuit, discharge at a preset discharge capacity rate and obtain discharge information;

[0015] The size of the preset discharge capacity rate is controlled according to the discharge information, wherein the size of the preset discharge capacity rate is less than or equal to a first preset rate threshold and greater than or equal to a second preset rate threshold, and the first preset rate threshold is greater than the second preset rate threshold.

[0016] Optionally, after controlling the target battery to automatically discharge, the method further includes:

[0017] Obtaining the battery voltage and released power of the target battery;

[0018] Performing a secondary differential calculation on the battery voltage and the released power to obtain a secondary differential calculation result;

[0019] When the secondary differential calculation result reaches a preset stop threshold, the target battery is controlled to stop automatic discharge.

[0020] Optionally, performing a secondary differential calculation on the battery voltage and the released power to obtain a secondary differential calculation result includes:

[0021] Performing differential calculation on the battery voltage and the released electricity to obtain differential capacity curve data of the battery voltage and the released electricity;

[0022] A secondary differential calculation is performed on the differential capacity curve data to obtain secondary differential capacity curve data of the battery voltage and the released electricity.

[0023] Optionally, controlling the target battery to stop automatic discharge includes:

[0024] When the secondary differential capacity curve data intersects the X-axis for the first time, it is determined that the target battery has passed the phase transition point, and the discharge of the target battery is stopped.

[0025] According to a second aspect of the present disclosure, a battery management device is provided, comprising:

[0026] a first acquiring unit, configured to acquire a current battery state of charge of a target battery;

[0027] a second acquiring unit, configured to acquire, when determining that the current battery state of charge exceeds a preset state threshold, a stationary time during which the target battery maintains the current battery state of charge;

[0028] The control unit is configured to control the target battery to automatically discharge when it is determined that the rest time exceeds a preset time threshold.

[0029] Optionally, the device further includes:

[0030] a judging unit, configured to judge whether the current battery state of charge exceeds a preset state threshold;

[0031] The second acquiring unit is further configured to, when it is determined that the current battery state of charge exceeds a preset state threshold, acquire a rest time during which the target battery maintains the current battery state of charge.

[0032] Optionally, the control unit includes:

[0033] A discharge module is used to discharge at a preset discharge capacity rate based on the resistance of the active discharge circuit and obtain discharge information;

[0034] The first control module is used to control the size of the preset discharge capacity rate according to the discharge information, wherein the size of the preset discharge capacity rate is less than or equal to a first preset rate threshold and greater than or equal to a second preset rate threshold, and the first preset rate threshold is greater than the second preset rate threshold.

[0035] Optionally, the device further includes:

[0036] a third acquiring unit, configured to acquire a battery voltage and a released power of the target battery after the control unit controls the target battery to automatically discharge;

[0037] a calculation unit, configured to perform a secondary differential calculation on the battery voltage and the released power to obtain a secondary differential calculation result;

[0038] The control unit is further configured to control the target battery to stop automatic discharge when the secondary differential calculation result reaches a preset stop threshold.

[0039] Optionally, the calculation unit includes:

[0040] a calculation module, configured to perform differential calculation on the battery voltage and the released power to obtain differential capacity curve data of the battery voltage and the released power;

[0041] The calculation module is further configured to perform a secondary differential calculation on the differential capacity curve data to obtain secondary differential capacity curve data of the battery voltage and the released power.

[0042] Optionally, the control unit further includes:

[0043] The second control module is configured to determine that the target battery has passed a phase change point when the secondary differential capacity curve data intersects the X-axis for the first time, and control the target battery to stop automatic discharge.

[0044] According to a third aspect of the present disclosure, a vehicle is provided, comprising the battery management device according to the second aspect of the present disclosure.

[0045] According to a fourth aspect of the present disclosure, there is provided an electronic device, including:

[0046] at least one processor; and

[0047] a memory communicatively connected to the at least one processor; wherein,

[0048] The memory stores instructions that can be executed by the at least one processor. The instructions are executed by the at least one processor to enable the at least one processor to perform the method described in the first aspect.

[0049] According to a fifth aspect of the present disclosure, a non-transitory computer-readable storage medium storing computer instructions is provided, wherein the computer instructions are used to enable the computer to execute the method described in the first aspect.

[0050] According to a sixth aspect of the present disclosure, a computer program product is provided, comprising a computer program, wherein when the computer program is executed by a processor, the computer program implements the method as described in the first aspect above.

[0051] The battery management method and device, vehicle, and electronic device provided by the present disclosure obtain the current battery state of charge of the target battery; if it is determined that the current battery state of charge exceeds a preset state threshold, obtain the rest time of the target battery to maintain the current battery state of charge; if it is determined that the rest time exceeds the preset time threshold, control the target battery to automatically discharge. Compared with the related art, the embodiment of the present disclosure automatically reduces the SOC state of the target battery and the storage time of the target battery in a high SOC state by judging the current battery state of charge and the rest time of the current battery state of charge, thereby reducing the side reactions between the electrolyte and the positive electrode material and the degree of phase change of the battery material, thereby improving the cycle life of the target battery.

[0052] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present application, nor is it intended to limit the scope of the present application. Other features of the present application will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] The accompanying drawings are provided to facilitate a better understanding of the present invention and do not constitute a limitation of the present disclosure.

[0054] Figure 1 A flowchart of a battery management method provided by an embodiment of the present disclosure;

[0055] Figure 2 A data graph showing a differential capacity curve of battery voltage and released power provided by an embodiment of the present disclosure;

[0056] Figure 3 A data graph showing a secondary differential capacity curve of battery voltage and released power provided by an embodiment of the present disclosure;

[0057] Figure 4 A schematic structural diagram of a battery management device provided in an embodiment of the present disclosure;

[0058] Figure 5 A schematic structural diagram of another battery management device provided in an embodiment of the present disclosure;

[0059] Figure 6 A schematic block diagram of an exemplary electronic device provided for an embodiment of the present disclosure. DETAILED DESCRIPTION

[0060] The following description of exemplary embodiments of the present disclosure is made in conjunction with the accompanying drawings, including various details of the embodiments of the present disclosure to facilitate understanding. These details should be considered as merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present disclosure. Similarly, for the sake of clarity and conciseness, descriptions of well-known functions and structures are omitted in the following description.

[0061] The following describes a battery management method and apparatus, a vehicle, and an electronic device according to embodiments of the present disclosure with reference to the accompanying drawings.

[0062] Figure 1 A flowchart of a battery management method provided by an embodiment of the present disclosure is provided.

[0063] like Figure 1 As shown, the method comprises the following steps:

[0064] Step 101: Obtain the current battery state of charge of the target battery.

[0065] The embodiments of the present disclosure can be applied to batteries of any device, such as vehicle power batteries, mobile phone batteries, computer batteries, and industrial equipment batteries, and are not specifically limited by the embodiments of the present disclosure. It should be noted that in the embodiments of the present disclosure, the current state of charge of the target battery is obtained continuously through the background of the battery management system (BMS), which continuously monitors the target battery.

[0066] The battery's state of charge (SOC), also known as remaining capacity, represents the ratio of the remaining dischargeable capacity of a battery after a period of use or long-term non-use to its fully charged capacity, usually expressed as a percentage.

[0067] In an embodiment of the present disclosure, a target battery is monitored by a battery management system to obtain the current battery state of charge of the target battery.

[0068] Step 102 : When it is determined that the current battery state of charge exceeds a preset state threshold, obtain the rest time during which the target battery maintains the current battery state of charge.

[0069] In the embodiment of the present disclosure, when the current battery state of charge exceeds a preset state threshold, the side reaction between the electrolyte and the positive electrode material will intensify, and the positive electrode material will also undergo a phase change. Maintaining this state for a long time will seriously affect the cycle life of the battery. Therefore, the BMS background needs to obtain the standing time of the current battery state of charge, wherein the standing time of the current battery state of charge refers to: the time when the battery state of charge exceeds the preset state threshold.

[0070] Step 103 : When it is determined that the rest time exceeds a preset time threshold, control the target battery to automatically discharge.

[0071] In the embodiment of the present disclosure, the preset time threshold refers to a manually set time threshold, which can be set by oneself according to actual application conditions, for example: 12 hours, 24 hours, etc. The specific preset time threshold is not limited by the embodiment of the present disclosure.

[0072] To facilitate understanding of the embodiments of the present disclosure, a process description is provided. When the target battery maintains the current battery state of charge for more than a preset time threshold (such as 12 hours), the battery management system controls the target battery to automatically discharge, thereby changing the battery state of charge of the target battery and reducing the static storage voltage of the target battery.

[0073] The battery management method provided by the present disclosure obtains the current battery state of charge of a target battery; if it is determined that the current battery state of charge exceeds a preset state threshold, obtains the rest time of the target battery at the current battery state of charge; if it is determined that the rest time exceeds a preset time threshold, controls the target battery to automatically discharge. Compared with related technologies, the embodiment of the present disclosure automatically reduces the state of charge (SOC) of the target battery and the storage time of the target battery at a high SOC state by judging the current battery state of charge and the rest time of the current battery state of charge, thereby reducing the side reactions between the electrolyte and the positive electrode material and the degree of phase change of the battery material, thereby improving the cycle life of the target battery.

[0074] In the disclosed embodiments, regarding the target battery, from a material mechanism perspective, long-term storage at a high state of charge can cause phase changes in the battery material, leading to changes in unit cell parameters. These atomic-level changes can escalate mechanical stress within the battery material, causing particle cracking and breakage, or material release and powdering. This can lead to an increase in the target battery's internal resistance and a significant reduction in the target battery's capacity.

[0075] Therefore, when the target battery is stored for a long time at a high battery state of charge, it will seriously affect the target battery cycle life. When the target battery is stored at a low battery state of charge, it will have little effect on the target battery cycle life. In summary, when the target battery is stored for a long time at a high battery state of charge, automatic discharge is required. When the target battery is stored at a low battery state of charge, automatic discharge is not required.

[0076] Therefore, in one possible implementation of the embodiment of the present disclosure, before obtaining the rest time during which the target battery maintains the current battery state of charge, it is necessary to judge the current battery state of charge so as to determine when to obtain the rest time of the current battery state of charge and save resources. Therefore, in order to avoid the need to continuously obtain the rest time of the current battery state of charge and reduce the waste of resources, the following method may also be adopted but is not limited to: judging whether the current battery state of charge exceeds a preset state threshold; obtaining the rest time during which the target battery maintains the current battery state of charge includes: obtaining the rest time during which the target battery maintains the current battery state of charge when it is determined that the current battery state of charge exceeds the preset state threshold.

[0077] It should be noted here that when the current battery state of charge is less than the preset state threshold, no operation is required, wherein the preset state threshold refers to a manually set state threshold, which can be set by yourself according to actual application conditions, and the preset state threshold is a threshold representing the battery state of charge, which can be expressed as a percentage, for example: 95%, 96%, etc. The specific preset state threshold can be set according to the actual situation of the target battery, and the embodiments of the present disclosure are not limited.

[0078] In one implementable manner of the embodiment of the present disclosure, when controlling the target battery to automatically discharge, a small current release is required to avoid releasing too much electricity at one time, which may lead to insufficient voltage of the target battery. Therefore, controlling the target battery to automatically discharge can be implemented by, but not limited to, the following methods: discharging at a preset discharge capacity rate based on the resistance of the active discharge circuit, and obtaining discharge information; controlling the size of the preset discharge capacity rate according to the discharge information, wherein the size of the preset discharge capacity rate is less than or equal to a first preset rate threshold, and greater than or equal to a second preset rate threshold, and the first preset rate threshold is greater than the second preset rate threshold.

[0079] In the embodiments of the present disclosure, the preset discharge capacity rate refers to a variable discharge capacity rate that can be controlled by the BMS based on actual application conditions. For example, the initial discharge stage is 0.08C, which gradually decreases as the discharge continues, ultimately decreasing to 0.01C. The specific method for controlling the discharge capacity rate is not limited in the embodiments of the present disclosure.

[0080] Among them, the first preset rate threshold and the second preset rate threshold are: custom-set thresholds, indicating that the size of the preset discharge capacity rate is between the first preset rate threshold and the second preset rate threshold, for example: the first preset rate threshold is 0.1C, and the second preset rate threshold is 0.01C, then the BMS will control the size of the preset discharge capacity rate within the range of 0.01C to 0.1C, and control the size of the preset discharge capacity rate within the range of 0.01C to 0.1C according to actual conditions. Specifically, the first preset rate threshold and the second preset rate threshold can be set according to actual conditions, and the embodiments of the present disclosure are not limited.

[0081] To facilitate understanding of the discharge capacity rate, an example is provided for explanation: a discharge capacity rate of 0.01C means that the entire capacity of the target battery is discharged in 100 hours. For example, if the target battery capacity is 48A·h and is discharged at a discharge capacity rate of 0.01C, the target battery is discharged at a current of 0.48A.

[0082] In one possible implementation of the embodiment of the present disclosure, after controlling the target battery to automatically discharge, it is necessary to determine a suitable time to stop the automatic discharge, so as to achieve the purpose of maintaining the target battery in a state of sufficient voltage and improving the cycle life of the target battery. Therefore, after controlling the target battery to automatically discharge, the following method may also be used, but is not limited to: obtaining the battery voltage and released power of the target battery; performing a secondary differential calculation on the battery voltage and the released power to obtain a secondary differential calculation result; and controlling the target battery to stop automatic discharge when the secondary differential calculation result reaches a preset stop threshold.

[0083] Among them, performing a secondary differential calculation on the battery voltage and the released power requires performing a primary differential calculation on the battery voltage and the released power. Therefore, performing a secondary differential calculation on the battery voltage and the released power to obtain a secondary differential calculation result can be achieved by, but not limited to, the following methods: performing a differential calculation on the battery voltage and the released power to obtain differential capacity curve data of the battery voltage and the released power; performing a secondary differential calculation on the differential capacity curve data to obtain secondary differential capacity curve data of the battery voltage and the released power.

[0084] Among them, the differential capacity curve data of the battery voltage and the released power can be regarded as a transition process for obtaining the secondary differential capacity curve data of the battery voltage and the released power. At the same time, in order to facilitate the understanding of the embodiment of the present disclosure, the embodiment of the present disclosure provides a differential capacity curve data diagram of the battery voltage and the released power, such as Figure 2 As shown, Figure 2 Each peak on the curve represents a reaction (such as phase change) that occurs during the entire electrochemical reaction process. Because the reaction potentials of different materials are different, the position and height of the peak on the curve will also be different. Figure 2 The first peak of the curve (starting from the right endpoint) at high voltage indicates that the positive electrode material of the target battery has undergone a phase change and the material stress has been relieved. However, the timing of stopping the automatic discharge of the target battery cannot be accurately determined by the differential capacity curve data of the battery voltage and the released power.

[0085] In order to accurately determine the timing for the target battery to stop automatic discharge, it is necessary to perform a secondary differential calculation on the battery voltage and the released power differential capacity curve data to obtain the secondary differential capacity curve data of the battery voltage and the released power, such as Figure 3 As shown, Figure 3 This is a data graph of the secondary differential capacity curve of the battery voltage and released power provided by the embodiment of the present disclosure, wherein: Figure 3 The curve (the part starting from the right segment) passes through the X-axis, indicating that the material has passed the phase change point and the automatic discharge can be stopped at this time.

[0086] At the same time, combined Figure 3 In the above step, when the second differential calculation result reaches a preset stop threshold, controlling the target battery to stop automatic discharge can be refined as follows: when the second differential capacity curve data intersects the X-axis for the first time, determining that the target battery has passed the phase change point, and controlling the target battery to stop automatic discharge.

[0087] In summary, the embodiments of the present disclosure can achieve the following effects:

[0088] 1. By monitoring the target battery through the battery management system, it is determined that the target battery is stored for a long time in a high SOC state, and the target battery is controlled to automatically discharge to reduce the SOC state of the target battery and the storage time of the target battery in the high SOC state, thereby reducing the side reaction between the electrolyte and the positive electrode material and the degree of phase change of the battery material, thereby improving the cycle life of the target battery.

[0089] 2. The timing for stopping automatic discharge of the target battery is determined by the battery voltage and the second differential capacity curve data of the released power of the target battery. This can not only ensure the target battery power but also more effectively improve the impact of battery material phase change or side reactions.

[0090] Corresponding to the above-mentioned battery management method, the present invention also provides a battery management device. Since the device embodiment of the present invention corresponds to the above-mentioned method embodiment, any details not disclosed in the device embodiment can be referred to the above-mentioned method embodiment and will not be repeated in this invention.

[0091] Figure 4 A schematic diagram of the structure of a battery management device provided in an embodiment of the present disclosure is shown in FIG. Figure 4 Shown, including:

[0092] A first acquiring unit 41 is configured to acquire a current battery state of charge of a target battery;

[0093] A second acquiring unit 42 is configured to acquire a rest time during which the target battery maintains the current battery state of charge when it is determined that the current battery state of charge exceeds a preset state threshold;

[0094] The control unit 43 is configured to control the target battery to automatically discharge when it is determined that the rest time exceeds a preset time threshold.

[0095] The battery management device provided by the present disclosure obtains the current state of charge (SOC) of a target battery; if it is determined that the current SOC exceeds a preset state threshold, obtains the time the target battery has been at rest at the current SOC; if it is determined that the rest time exceeds a preset time threshold, controls the target battery to automatically discharge. Compared with related technologies, the embodiment of the present disclosure automatically reduces the SOC of the target battery and the storage time of the target battery at a high SOC by judging the current SOC and the rest time of the current SOC, thereby reducing side reactions between the electrolyte and the positive electrode material and the degree of phase change of the battery material, thereby improving the cycle life of the target battery.

[0096] Furthermore, in a possible implementation of this embodiment, as Figure 5 As shown, the device also includes:

[0097] A determination unit 44 is configured to determine whether the current battery state of charge exceeds a preset state threshold;

[0098] The second acquiring unit 42 is further configured to, when it is determined that the current battery state of charge exceeds a preset state threshold, acquire the rest time during which the target battery maintains the current battery state of charge.

[0099] Furthermore, in a possible implementation of this embodiment, as Figure 5 As shown, the control unit 43 includes:

[0100] The discharge module 431 is used to discharge at a preset discharge capacity rate based on the resistance of the active discharge circuit and obtain discharge information;

[0101] The first control module 432 is used to control the size of the preset discharge capacity rate according to the discharge information, wherein the size of the preset discharge capacity rate is less than or equal to a first preset rate threshold and greater than or equal to a second preset rate threshold, and the first preset rate threshold is greater than the second preset rate threshold.

[0102] Furthermore, in a possible implementation of this embodiment, as Figure 5 As shown, the device also includes:

[0103] a third acquiring unit 45, configured to acquire the battery voltage and discharged power of the target battery after the control unit controls the target battery to automatically discharge;

[0104] a calculation unit 46, configured to perform a secondary differential calculation on the battery voltage and the released power to obtain a secondary differential calculation result;

[0105] The control unit 43 is further configured to control the target battery to stop automatic discharge when the secondary differential calculation result reaches a preset stop threshold.

[0106] Furthermore, in a possible implementation of this embodiment, as Figure 5 As shown, the calculation unit 46 includes:

[0107] a calculation module 461 for performing differential calculation on the battery voltage and the released power to obtain differential capacity curve data of the battery voltage and the released power;

[0108] The calculation module 461 is further configured to perform a secondary differential calculation on the differential capacity curve data to obtain the secondary differential capacity curve data of the battery voltage and the released power.

[0109] Furthermore, in a possible implementation of this embodiment, as Figure 5 As shown, the control unit 43 includes:

[0110] The second control module 433 is configured to determine that the target battery has passed a phase change point when the secondary differential capacity curve data intersects the X-axis for the first time, and control the target battery to stop automatic discharge.

[0111] In an embodiment of the present disclosure, a vehicle is further provided, wherein the vehicle is equipped with a battery management device.

[0112] It should be noted that the above explanation of the method embodiment is also applicable to the device of this embodiment, and the principles are the same, which is not limited in this embodiment.

[0113] According to an embodiment of the present disclosure, the present disclosure also provides an electronic device, a readable storage medium, and a computer program product.

[0114] Figure 6 A schematic block diagram of an example electronic device 600 that can be used to implement embodiments of the present disclosure is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital assistants, cellular phones, smartphones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are provided as examples only and are not intended to limit the implementation of the present disclosure described and / or claimed herein.

[0115] like Figure 6As shown, the device 600 includes a computing unit 601, which can perform various appropriate actions and processes according to a computer program stored in a ROM (Read-Only Memory) 602 or a computer program loaded from a storage unit 608 into a RAM (Random Access Memory) 603. Various programs and data required for the operation of the device 600 can also be stored in the RAM 603. The computing unit 601, the ROM 602, and the RAM 603 are connected to each other via a bus 604. An I / O (Input / Output) interface 605 is also connected to the bus 604.

[0116] Various components in device 600 are connected to I / O interface 605, including an input unit 606, such as a keyboard, mouse, etc.; an output unit 607, such as various types of displays, speakers, etc.; a storage unit 608, such as a magnetic disk, optical disk, etc.; and a communication unit 609, such as a network card, modem, wireless communication transceiver, etc. The communication unit 609 allows device 600 to exchange information / data with other devices via a computer network such as the Internet and / or various telecommunication networks.

[0117] The computing unit 601 can be any general-purpose and / or specialized processing component with processing and computing capabilities. Some examples of the computing unit 601 include, but are not limited to, a CPU (Central Processing Unit), a GPU (Graphic Processing Unit), various specialized AI (Artificial Intelligence) computing chips, various computing units that run machine learning model algorithms, a DSP (Digital Signal Processor), and any suitable processor, controller, microcontroller, etc. The computing unit 601 performs the various methods and processes described above, such as the battery management method. For example, in some embodiments, the battery management method can be implemented as a computer software program tangibly embodied in a machine-readable medium, such as the storage unit 608. In some embodiments, part or all of the computer program can be loaded and / or installed on the device 600 via the ROM 602 and / or the communication unit 609. When the computer program is loaded into the RAM 603 and executed by the computing unit 601, one or more steps of the method described above can be performed. Alternatively, in other embodiments, the computing unit 601 may be configured to execute the aforementioned battery management method in any other appropriate manner (for example, by means of firmware).

[0118] Various embodiments of the systems and techniques described herein can be implemented in digital electronic circuit systems, integrated circuit systems, FPGAs (Field Programmable Gate Arrays), ASICs (Application-Specific Integrated Circuits), ASSPs (Application Specific Standard Products), SOCs (System on Chips), CPLDs (Complex Programmable Logic Devices), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include being implemented in one or more computer programs that are executable and / or interpreted on a programmable system that includes at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0119] The program code for implementing the method of the present disclosure can be written in any combination of one or more programming languages. These program codes can be provided to a processor or controller of a general-purpose computer, a special-purpose computer, or other programmable data processing device so that when the program code is executed by the processor or controller, the functions / operations specified in the flow chart and / or block diagram are implemented. The program code can be executed entirely on the machine, partially on the machine, as a stand-alone software package, partially on the machine and partially on a remote machine, or entirely on a remote machine or server.

[0120] In the context of the present disclosure, a machine-readable medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, device, or apparatus. A machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or apparatus, or any suitable combination of the foregoing. More specific examples of machine-readable storage media may include an electrical connection based on one or more wires, a portable computer disk, a hard disk, RAM, ROM, EPROM (Electrically Programmable Read-Only-Memory) or flash memory, optical fiber, CD-ROM (Compact Disc Read-Only Memory), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0121] To provide interaction with a user, the systems and techniques described herein can be implemented on a computer having: a display device (e.g., a CRT (Cathode-Ray Tube) or LCD (Liquid Crystal Display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user can provide input to the computer. Other types of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, voice input, or tactile input).

[0122] The systems and techniques described herein can be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: LAN (Local Area Network), WAN (Wide Area Network), the Internet, and blockchain networks.

[0123] A computer system may include a client and a server. The client and server are generally remote from each other and typically interact via a communication network. This client-server relationship is established by computer programs running on the respective computers, establishing a client-server relationship. The server may be a cloud server, also known as a cloud computing server or cloud host, a host product within the cloud computing service ecosystem that addresses the management difficulties and limited scalability of traditional physical hosts and VPS services ("Virtual Private Servers" or simply "VPS"). The server may also be a server in a distributed system or a server integrated with blockchain.

[0124] It's important to note that artificial intelligence (AI) is the study of how computers can simulate certain human thought processes and intelligent behaviors (such as learning, reasoning, thinking, and planning). This encompasses both hardware and software technologies. AI hardware technologies generally include sensors, specialized AI chips, cloud computing, distributed storage, and big data processing. AI software technologies primarily encompass computer vision, speech recognition, natural language processing, machine learning / deep learning, big data processing, and knowledge graphs.

[0125] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in this disclosure can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solutions disclosed in this disclosure can be achieved. This is not limited herein.

[0126] The above specific embodiments do not constitute a limitation on the scope of protection of this disclosure. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this disclosure shall be included within the scope of protection of this disclosure.

Claims

1. A battery management method, characterized in that: include: Get the current battery state of charge of the target battery; When it is determined that the current battery state of charge exceeds a preset state threshold, obtaining a static time for which the target battery is maintained at the current battery state of charge; When it is determined that the standing time exceeds a preset time threshold, the target battery is controlled to automatically discharge.

2. The method according to claim 1, characterized in that Before obtaining the rest time during which the target battery maintains the current battery state of charge, the method includes: Determining whether the current battery state of charge exceeds a preset state threshold; The step of obtaining the stationary time during which the target battery is maintained at the current battery state of charge includes: When it is determined that the current battery state of charge exceeds a preset state threshold, a rest time during which the target battery maintains the current battery state of charge is obtained.

3. The method according to claim 1, characterized in that The controlling the target battery to automatically discharge comprises: Based on the resistance of the active discharge circuit, discharge is performed at a preset discharge capacity rate and discharge information is obtained; The size of the preset discharge capacity rate is controlled according to the discharge information, wherein the size of the preset discharge capacity rate is less than or equal to a first preset rate threshold and greater than or equal to a second preset rate threshold, and the first preset rate threshold is greater than the second preset rate threshold.

4. The method according to claim 1, characterized in that: After controlling the target battery to automatically discharge, the method includes: Obtaining the battery voltage and released power of the target battery; Performing a second differential calculation on the battery voltage and the released power to obtain a second differential calculation result; When the secondary differential calculation result reaches a preset stop threshold, the target battery is controlled to stop automatic discharge.

5. The method according to claim 4, characterized in that The performing of a second differential calculation on the battery voltage and the released power to obtain a second differential calculation result includes: Performing differential calculation on the battery voltage and the released electric quantity to obtain differential capacity curve data of the battery voltage and the released electric quantity; The differential capacity curve data is subjected to a secondary differential calculation to obtain the secondary differential capacity curve data of the battery voltage and the released electric quantity.

6. The method according to claim 5, characterized in that The controlling the target battery to stop automatic discharge comprises: When the secondary differential capacity curve data intersects the X-axis for the first time, it is determined that the target battery has passed a phase change point, and the target battery is controlled to stop automatic discharge.

7. A battery management device, characterized in that: include: A first acquisition unit, used to acquire a current battery state of charge of a target battery; A second acquisition unit, configured to acquire a standing time of the target battery maintaining the current battery state of charge when it is determined that the current battery state of charge exceeds a preset state threshold; The control unit is used to control the target battery to automatically discharge when it is determined that the rest time exceeds a preset time threshold.

8. A vehicle, characterized in that: The vehicle comprises the battery management device as claimed in claim 7.

9. An electronic device, characterized in that: include: at least one processor; as well as a memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the method according to any one of claims 1 to 6.

10. A non-transitory computer-readable storage medium storing computer instructions, characterized in that: The computer instructions are used to cause the computer to execute the method according to any one of claims 1-6.

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