Battery management method and device, computer equipment and computer readable storage medium

Abstract

The invention provides a battery management method and device, computer equipment and a computer readable storage medium. The method comprises the steps of obtaining operation data of a target battery; comparing the difference between the operation data and the reference data; determining a management strategy based on the difference, and managing the target battery according to the management strategy; wherein the reference data and the management strategy are obtained according to the following steps: carrying out aging experiments on a plurality of reference batteries under different working conditions; cyclically disassembling at least one of the reference batteries every a preset number, and analyzing the change of the structure and composition of the disassembled battery; and when the disassembled battery meets a preset condition, obtaining reference data of the disassembled battery, and determining a management strategy corresponding to the preset condition. Therefore, the whole life cycle of the battery can be managed by combining the operation data of the battery.

Description

Technical Field

[0001] The present application belongs to the field of power batteries and computers, and specifically relates to a battery management method and apparatus, computer equipment, and computer-readable storage media. Background Art

[0002] In recent years, the new energy industry has been booming. As an important component of new energy equipment (such as automobiles, aircraft, etc.), power battery packs (hereinafter referred to as batteries) have also received widespread attention. At present, the management of batteries generally stays at monitoring certain parameters to control the battery usage process in real time, such as monitoring the battery's state of charge (State of Charge, referred to as SOC) to adjust the battery's real-time charging strategy, or monitoring the battery's state of health (State Of Health, referred to as SOH) to adjust the battery's charging current, etc.

[0003] However, after research, the inventors found that the current technology does not use the battery's operating data to manage the battery throughout its life cycle. Summary of the invention

[0004] The technical problem to be solved by the present application is how to provide a battery management method to manage the battery throughout its life cycle based on the battery's operating data.

[0005] In order to solve or improve the above technical problems to a certain extent, according to a first aspect of the present application, a battery management method is provided, the method comprising: acquiring operating data of a target battery; comparing the difference between the operating data and reference data; determining a management strategy based on the difference, and managing the target battery according to the management strategy;

[0006] Among them, the reference data and management strategy are obtained according to the following steps: subjecting multiple reference batteries to aging experiments under different working conditions; disassembling at least one of the reference batteries every preset number of cycles, and analyzing the changes in the structure and composition of the disassembled battery; when the disassembled battery meets preset conditions, obtaining the reference data of the disassembled battery, and determining the management strategy corresponding to the preset conditions.

[0007] Optionally, the management strategy includes at least one of the following: changing the usage strategy of the target battery; repairing the target battery; recycling the target battery according to a preset recycling method.

[0008] Optionally, when the management strategy is to recycle the target battery according to a preset recycling method, the preset conditions include that the structural damage to the positive electrode and / or the negative electrode reaches 10% to 20% of the initial amount, and the management strategies corresponding to the preset conditions include: recycling the target battery according to a wet chemical method; the preset conditions also include that the structural damage to the positive electrode and / or the negative electrode reaches more than 20% of the initial amount, and the management strategies corresponding to the preset conditions include: recycling the target battery according to a pyrometallurgical method.

[0009] Optionally, when the management strategy is to change the usage strategy of the target battery, the preset condition includes that the content of effective ingredients in the electrolyte is less than 90% of the initial content, and the management strategy corresponding to the preset condition includes: reducing the charging rate of the target battery, and / or adjusting the DOD range of the target battery.

[0010] Optionally, when the management strategy is to repair the target battery, the preset condition includes that the content of active ingredient in the electrolyte is less than 90% of the initial content, and the management strategy corresponding to the preset condition includes: replenishing the electrolyte in the target battery.

[0011] Optionally, the operating data includes at least one of the following: rate of change of capacity with voltage, DCR, capacity, depolarization speed, and health status.

[0012] Optionally, the method further includes: calculating a comprehensive benefit of management strategies for a plurality of the target batteries; and adjusting the management strategy according to the comprehensive benefit.

[0013] According to a second aspect of the present application, a battery management device is provided, the device comprising: a data acquisition module, used to acquire operating data of a target battery; a comparison module, used to compare the difference between the operating data and reference data; a management module, used to determine a management strategy based on the difference, and manage the target battery according to the management strategy;

[0014] Among them, the reference data and management strategy are obtained according to the following steps: subjecting multiple reference batteries to aging experiments under different working conditions; disassembling at least one of the reference batteries every preset number of cycles, and analyzing the changes in the structure and composition of the disassembled battery; when the disassembled battery meets preset conditions, obtaining the reference data of the disassembled battery, and determining the management strategy corresponding to the preset conditions.

[0015] According to a third aspect of the present application, a computer device is provided, which includes a memory and a processor, wherein the memory stores a computer program, and when the program is executed by the processor, the steps of any one of the above-mentioned battery management methods can be implemented.

[0016] According to a fourth aspect of the present application, a computer-readable storage medium is provided for storing a computer program, wherein the program, when executed by a computer or a processor, implements the steps of the battery management method as described in any one of the above.

[0017] Compared with the prior art, the present application has obvious advantages and beneficial effects. By means of the above technical solution, the battery management method and device, computing equipment, and storage medium of the present application can achieve considerable technical advancement and practicality, and have wide industrial utilization value, and have at least the following advantages:

[0018] Through the battery management method of the present application, it is possible to obtain the changes in the structure and composition of the battery at different periods in the entire life cycle based on the aging experiment of the reference battery, and obtain the reference data of each period to formulate a management strategy for the battery in this period. During the use of the target battery, based on the comparison results of the target battery's operating data and reference data, the target battery's life cycle is understood, and the target battery is managed based on the formulated management strategy. In this way, the target battery can be managed throughout its life cycle based on its operating data.

[0019] Furthermore, through the battery management method of the present application, the external characteristic parameters of the battery at different stages of its entire life cycle are calibrated through aging experiments, and different management strategies are developed in combination with material analysis methods. The characteristic values ​​of the external characteristics are processed into a server-side algorithm, and the characteristic values ​​of the target batteries being used in the market are calculated based on the after-sales data on the market side. The ability to accurately identify batteries that need to be recycled or repaired on the market can greatly improve the utilization efficiency of the battery and avoid safety problems in the subsequent recycling process of the battery.

[0020] Furthermore, this application also utilizes economic models and takes into account current market variables and policy variables, and uses an optimization process to comprehensively determine whether the battery meets the recycling or repair standards, and through different management strategies, maximizes the total benefits of recycling or repairing the battery.

[0021] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following specifically cites the preferred embodiments and describes them in detail with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of a battery management method according to an embodiment of the present application;

[0023] Figure 2 A flowchart of a method for obtaining reference data and management strategies according to an embodiment of the application;

[0024] Figure 3 A schematic diagram of the structure of a battery management device according to an embodiment of the present application. DETAILED DESCRIPTION

[0025] As mentioned in the background technology, the current management of batteries generally stays at monitoring certain parameters to control the battery usage process in real time, and does not combine the battery operation data to manage the battery throughout its life cycle.

[0026] Specifically, there is currently no unified recycling standard for lithium batteries, and the industry generally only considers SOH characteristics or only recycles accident battery packs.

[0027] At present, the recycling method is generally based on system crushing, material recycling and reuse (lithium, nickel, cobalt, manganese, graphite, etc.), supplemented by cascade utilization. The environmental protection and economic efficiency of material recycling are poor, and it is impossible to maximize the recycling value. The cascade utilization simply relies on capacity (SOH) data as an indicator. Cells with SOH above 80% are recycled, and cells with SOH below 80% are recycled. Simply relying on SOH as an indicator has low confidence, resulting in waste of resources and potential safety risks.

[0028] In order to further explain the technical means and effects adopted by the present application to achieve the predetermined application purpose, the specific implementation methods and effects of the battery management method, computing device, and computer-readable storage medium proposed in the present application are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0029] According to the first aspect of this application, see Figure 1 , Figure 1 This is a flow chart of a first battery management method. The method includes the following steps S101, S102 and S103. Each step is described in detail below.

[0030] Step S101, obtaining operating data of a target battery.

[0031] The target battery is one or more batteries to be tested.

[0032] The operating data is the data reflecting the operating status of the battery during its operation.

[0033] In an optional embodiment, the operating data includes at least one of the following: capacity change rate with voltage (dQ / dV), direct current resistance (DCR), capacity, depolarization speed, and state of health (SOH). Where Q is the capacity of the battery and V is the voltage of the battery.

[0034] It should be noted that the operating data includes but is not limited to the above embodiments, and may also include the voltage, current, temperature, SOH, ampere-hour integration, etc. of the battery, which will not be repeated here.

[0035] Step S102, comparing the difference between the operating data and the reference data.

[0036] The reference data is used to determine whether the operating data meets the conditions corresponding to the policy, and the data type corresponding to the reference data should be the same as the data type of the operating data.

[0037] In an optional embodiment, the operating data includes five types of data: dQ / dV, DCR, capacity, depolarization speed, and SOH, and the reference data also includes the same five types of data.

[0038] Step S103: determining a management strategy based on the difference, and managing the target battery according to the management strategy.

[0039] The management strategy includes one or more management strategies such as controlling, repairing, and recycling the target battery during its entire life cycle.

[0040] In an optional embodiment, the management strategy includes at least one of the following: changing the use strategy of the target battery; repairing the target battery; recycling the target battery according to a preset recycling method.

[0041] In an optional embodiment, determining the management strategy based on the difference may include: when the difference value is less than a preset threshold, executing the corresponding management strategy on the target battery.

[0042] Wherein, the reference data and management strategy are based on Figure 2 The steps in get:

[0043] Step S201, performing aging experiments (also referred to as "degradation experiments") on a plurality of reference batteries under different operating conditions.

[0044] The reference battery is a battery used for aging experiments. The reference battery and the target battery should be of the same type to ensure that the aging test results of the reference battery can reflect the situation of the target battery.

[0045] Different working conditions may include: charging conditions, discharging conditions, static conditions, etc. The purpose of conducting aging experiments on reference batteries under different working conditions is to simulate the normal application scenarios of the batteries.

[0046] Step S202: dismantle at least one of the reference batteries every preset number of cycles, and analyze changes in the structure and composition of the dismantled batteries.

[0047] Step S203: when the disassembled battery meets a preset condition, obtain reference data of the disassembled battery and determine a management strategy corresponding to the preset condition.

[0048] In an optional embodiment, the preset conditions may include: effective components of the positive electrode, negative electrode, electrolyte, separator and other structures in the disassembled battery meet certain conditions.

[0049] In another optional embodiment, the preset condition may also include that the amount of damage to the positive electrode, negative electrode, electrolyte, diaphragm and other structures in the disassembled battery meets certain conditions.

[0050] It should be noted that the preset conditions include but are not limited to the above embodiments, which will not be repeated here.

[0051] Through the above-mentioned battery management method, the changes in the structure and composition of the battery at different periods in the whole life cycle can be obtained based on the aging experiment of the reference battery, and the reference data of each period can be obtained to formulate a management strategy for the battery in this period. During the use of the target battery, based on the comparison results of the target battery's operating data and reference data, the target battery's life cycle is understood, and the target battery is managed based on the formulated management strategy. In this way, the target battery can be managed throughout its life cycle based on its operating data.

[0052] In an optional embodiment, when the management strategy is to recycle the target battery according to a preset recycling method, the preset condition includes that the structural damage of the positive electrode and / or the negative electrode reaches 10% to 20% of the initial amount, and the management strategy corresponding to the preset condition includes: recycling the target battery according to a wet chemical method;

[0053] The preset conditions also include that the amount of structural damage to the positive electrode and / or the negative electrode reaches more than 20% of the initial amount. The management strategy corresponding to the preset conditions includes: recycling the target battery according to a pyrometallurgical method.

[0054] In an optional embodiment, when the management strategy is to change the usage strategy of the target battery, the preset condition includes that the content of effective ingredients in the electrolyte is less than 90% of the initial content, and the management strategy corresponding to the preset condition includes: reducing the charging rate of the target battery, and / or adjusting the depth of discharge (Depth of Discharge, DOD for short) interval of the target battery.

[0055] In an optional embodiment, when the management strategy is to repair the target battery, the preset condition includes that the content of active ingredient in the electrolyte is less than 90% of the initial content, and the management strategy corresponding to the preset condition includes: replenishing the electrolyte in the target battery.

[0056] In an alternative embodiment, Figure 1 The battery management method may further include: calculating the comprehensive benefits of the management strategies of the plurality of target batteries; and adjusting the management strategy according to the comprehensive benefits.

[0057] Among them, the management strategy of multiple target batteries may include: electrolyte repair of the target battery (such as replenishing the electrolyte of the target battery); recycling the target battery according to the wet chemical method; recycling the target battery according to the pyrometallurgical method.

[0058] The comprehensive benefits can be decomposed into three parts: the net benefits of electrolyte remediation, the net benefits of wet chemical method and the net benefits of pyrometallurgical method.

[0059] The comprehensive benefit equation can be written as: Πtotal = Πreuse + Πchem + Πpyro. The comprehensive benefit Πtotal is the sum of different management strategies under a given target battery state, which is used to evaluate the overall benefit under all available recycling technologies. Adjusting the management strategies of multiple target batteries based on the comprehensive benefit can maximize the overall benefit.

[0060] In the comprehensive benefit equation, the net benefit of electrolyte remediation Πreuse can be expressed as formula (1):

[0061] Πreuse=α(SOH,R,λ,E)×(Vreuse(SOH,R,λ,E)-Creuse(E,λ,))

[0062] In formula (1), α is the electrolyte repair suitability function, which is used to determine whether the battery is suitable for repair by the electrolyte repair method. α(SOH, R, λ, E) means that α is related to the four parameters SOH, R, λ, and E of the target battery in the brackets; Vreuse(SOH, R, λ, E) means that the four parameters in the Vreuse brackets are related, which will not be repeated below; SOH is the health status of the target battery; R is the internal resistance of the target battery; λ is the degree of lithium plating of the target battery; E is the electrolyte content of the target battery; Vreuse is the market value of the battery after electrolyte repair, which is determined based on the state of the target battery after repair; Creuse is the cost of the repair process, which is mainly related to the repair and reprocessing of the electrolyte.

[0063] In the comprehensive benefit equation, the net benefit of pyrometallurgy Πpyro can be expressed as formula (2):

[0064] Πpyro=γ(SOH,R,λ,E)×(Vpyro(SOH,R,λ,E)-Cpyro(SOH,R,λ,E));

[0065] In formula (2), γ(SOH, R, λ, E) is the suitability function of the pyrometallurgical method, which determines whether the target battery is suitable for recycling by pyrometallurgical method; Vpyro is the value of the material recovered after pyrometallurgical treatment, which depends on the current state of the target battery and the market price of metals and other materials; Cpyro is the total cost of the pyrometallurgical method, including high-temperature treatment, equipment maintenance and environmental governance costs.

[0066] In the comprehensive benefit equation, the net benefit of the wet chemical method Πchem can be expressed as formula (3):

[0067] Πchem=β(SOH,R,λ,E)×(Vchem(SOH,R,λ,E)-Cchem(SOH,R,λ,E))

[0068] In formula (3), β(SOH, R, λ, E) is the wet chemical method applicability function, which evaluates the applicability of the battery in wet chemical treatment; Vchem is the value of materials extracted by wet chemical methods, based on the content of extractable materials (such as valuable metals) under the current technological state; Cchem is the total cost of wet chemical treatment, including costs such as solvents, waste disposal and energy consumption.

[0069] Among them, the suitability functions (α, β, γ) are the key to the calculation of each benefit. They determine the management strategy to be adopted according to the state of the target battery (SOH, R, λ, E), and calculate the potential benefits of the target battery after recycling or repair according to the management strategy.

[0070] Through the above embodiment, an economic model of battery management is constructed through the above multiple formulas, and the cost and benefit of recycling and repairing the target battery can be simulated according to the economic model to adjust the corresponding management strategy, thereby making battery management more in line with economic needs.

[0071] against Figure 2 The following is a specific solution for obtaining reference data and management strategies, and a practical application solution for managing the target battery based on the management strategy.

[0072] Step 1: Perform aging tests on 100 reference batteries under different working conditions. The type of the reference batteries is consistent with the target batteries, and can be lithium-ion batteries, etc.

[0073] Step 2: disassemble a reference battery every 100 cycles to perform material level characterization and characterize the changes in the microstructure of the positive and negative electrode materials and the composition of the electrolyte.

[0074] Step 3. When it is observed that the content of effective components in the electrolyte of the disassembled battery is less than 90% of the initial content, the number of cycles of the currently disassembled battery is recorded as X1. The external characteristic data set Y1 (dv / dq, DCR, capacity, depolarization rate, SOH, etc.) of the battery disassembled at this time is recorded as reference data. At this time, other reference batteries can continue to be used by changing the use strategy, such as reducing the charging rate, adjusting the DOD interval, etc., without recycling. At this time, changing the strategy to continue using the reference battery can simulate the actual application scenario of the battery, and the control of the battery by the battery management system (Battery Management System, referred to as BMS) can more accurately determine the management strategy.

[0075] Step 4. When it is observed that the content of effective components in the electrolyte of the disassembled battery is less than 70% of the initial content, the number of cycles of the currently disassembled battery is recorded as X2. The external characteristic data set Y2 (dv / dq, DCR, capacity, depolarization rate, SOH, etc.) of the disassembled battery is recorded as reference data. When the difference between the operating data of the target battery and the reference data Y2 is small, the target battery can be repaired by electrolyte repair. After the whole package is recycled, gradient utilization can be achieved by supplementing the electrolyte without the need for next-level recycling.

[0076] Step 5, when it is observed that the structural damage of the positive electrode and / or negative electrode of the disassembled battery reaches 10% of the initial value, the cycle number of the currently disassembled battery is recorded as X3, and the external characteristic data set Y3 (dv / dq, DCR, capacity, depolarization speed, SOH, etc.) of the disassembled battery at this time is recorded as reference data. When the difference between the operating data of the target battery and the reference data Y3 is small, the target battery can be recycled by wet chemical method.

[0077] Step 6. When it is observed that the structural damage of the positive and / or negative electrode of the disassembled battery reaches 20% of the initial value, the number of cycles of the currently disassembled battery is recorded as X4, and the external characteristic data set Y4 (dv / dq, DCR, capacity, depolarization rate, SOH, etc.) of the disassembled battery is recorded as reference data. When the difference between the operating data of the target battery and the reference data Y4 is small, the target battery can be recycled by pyrometallurgical method.

[0078] Step 7: Screen the characteristic values ​​of batteries running in the market. Screen out target batteries that meet the reference data of Y1, Y2, Y3 and Y4 respectively, and manage each target battery according to the corresponding management strategy.

[0079] Step 8, simulating the cost and benefit of recycling multiple target batteries based on the economic model, and adjusting the management strategy for one or more of the target batteries, such as taking inventory of whether to recycle one or more of the target batteries.

[0080] In an optional embodiment, the battery management method provided in the present application can be applied to a server (such as a cloud server), the server communicates with the BMS of the target battery, obtains the operating data of the target battery from the BMS, and determines the management strategy for the target battery based on the operating data. When the management strategy is to change the usage strategy of the target battery, the server can issue instructions to the BMS of the target battery so that the BMS controls the target battery according to the changed usage strategy. When the management strategy is to recycle or repair the target battery, the target battery needs to be recalled.

[0081] Through the battery management method of this application, the external characteristic parameters of the battery at different stages of its entire life cycle are calibrated through aging experiments, and different management strategies are developed in combination with material analysis methods. The characteristic values ​​of the external characteristics are processed into a server-side algorithm, and the characteristic values ​​of the target batteries being used in the market are calculated based on the after-sales data on the market side. The ability to accurately identify batteries that need to be recycled or repaired on the market can greatly improve the utilization efficiency of the battery and avoid safety problems in the subsequent recycling process of the battery.

[0082] Furthermore, this application also utilizes economic models and takes into account current market variables and policy variables, and uses an optimization process to comprehensively determine whether the battery meets the recycling or repair standards, and through different management strategies, maximizes the total benefits of recycling or repairing the battery.

[0083] See also Figure 3 , Figure 3 A schematic structural diagram of a battery management device 30 is provided, and the battery management device 30 may include:

[0084] A data acquisition module 301 is used to acquire the operating data of the target battery;

[0085] A comparison module 302, used to compare the difference between the operating data and the reference data;

[0086] A management module 303, configured to determine a management strategy based on the difference, and manage the target battery according to the management strategy;

[0087] The reference data and management strategy are obtained according to the following steps:

[0088] Aging experiments were performed on multiple reference batteries under different working conditions;

[0089] disassembling at least one of the reference batteries every a preset number of cycles and analyzing changes in the structure and composition of the disassembled batteries;

[0090] When the disassembled battery meets the preset conditions, reference data of the disassembled battery is obtained, and a management strategy corresponding to the preset conditions is determined.

[0091] In an optional embodiment, the management strategy includes at least one of the following: changing the use strategy of the target battery; repairing the target battery; recycling the target battery according to a preset recycling method.

[0092] In an optional embodiment, when the management strategy is to recycle the target battery according to a preset recycling method, the preset conditions include that the structural damage to the positive electrode and / or the negative electrode reaches 10% to 20% of the initial amount, and the management strategies corresponding to the preset conditions include: recycling the target battery according to a wet chemical method; the preset conditions also include that the structural damage to the positive electrode and / or the negative electrode reaches more than 20% of the initial amount, and the management strategies corresponding to the preset conditions include: recycling the target battery according to a pyrometallurgical method.

[0093] In an optional embodiment, when the management strategy is to change the usage strategy of the target battery, the preset condition includes that the content of effective ingredients in the electrolyte is less than 90% of the initial content, and the management strategy corresponding to the preset condition includes: reducing the charging rate of the target battery, and / or adjusting the DOD range of the target battery.

[0094] In an optional embodiment, when the management strategy is to repair the target battery, the preset condition includes that the content of active ingredient in the electrolyte is less than 90% of the initial content, and the management strategy corresponding to the preset condition includes: replenishing the electrolyte in the target battery.

[0095] In an optional embodiment, the operating data includes at least one of the following: rate of change of capacity with voltage, DCR, capacity, depolarization speed, and health status.

[0096] In an alternative embodiment, Figure 3 The battery management method may further include:

[0097] A benefit calculation module, used to calculate the comprehensive benefits of the management strategies of the target batteries;

[0098] An adjustment module is used to adjust the management strategy according to the comprehensive income.

[0099] It should be noted that Figure 3 For relevant definitions, see Figure 1 and Figure 2 The description of the battery management method in will not be elaborated here.

[0100] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0101] According to another embodiment of the present application, a computing device is provided, which includes a memory and a processor, wherein the memory stores a computer program, and the program can implement the steps of the battery management method in any of the above embodiments when executed by the processor. The computing device may refer to a device such as a car or an aircraft, or may refer to a BMS or other controller, a server, etc.

[0102] The computing device may include a processor, a memory, an input / output interface, a communication interface, a display unit and an input device. The processor, the memory and the input / output interface are connected via a system bus, and the communication interface, the display unit and the input device are connected to the system bus via the input / output interface. The processor of the computing device is used to provide computing and control capabilities. The memory of the computing device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the computing device is used to exchange information between the processor and an external device. The communication interface of the computing device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be implemented through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. When the computer program is executed by the processor, a battery management method is implemented. The display unit of the computing device is used to form a visually visible picture, which can be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computing device can be a touch layer covering the display screen, or a button, trackball or touchpad set on the computing device shell, or an external keyboard, touchpad or mouse.

[0103] According to another embodiment of the present application, a storage medium is provided, which may be a computer-readable storage medium for storing a computer program, which, when executed by a computer or a processor, implements the steps of the battery management method in any of the above-mentioned embodiments.

[0104] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but are not limited to this.

[0105] Those skilled in the art will appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described herein may be implemented as electronic hardware, computer software, or a combination of both.

[0106] In order to show the interchangeability between hardware and software, various schematic components, blocks, modules, circuits and steps are generally described above according to their functionality. Such functionality is implemented in hardware form or software form depending on the specific application and the design restrictions imposed on the overall system. Those skilled in the art can implement the described functionality in a variable manner for specific specific applications, but such implementation decisions should not be understood as causing deviations from the scope of the present application.

[0107] Although only some of the specific embodiments of the present application are described, it should be understood by those skilled in the art that the present application can be implemented in many other forms without departing from its subject matter and scope. Therefore, the examples and embodiments shown are considered to be illustrative rather than restrictive, and the present application may include various modifications and substitutions without departing from the spirit and scope of the present application as defined in the appended claims.

[0108] The above is only a preferred embodiment of the present application and does not constitute any form of limitation to the present application. Although the present application has been disclosed as a preferred embodiment as above, it is not intended to limit the present application. Any technician familiar with the profession can make some changes or modifications to the equivalent embodiments of the above disclosed technical contents without departing from the scope of the technical solution of the present application. However, any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A battery management method, characterized in that: The method comprises: Obtaining the operating data of the target battery; comparing differences between the operating data and reference data; determining a management strategy based on the difference, and managing the target battery according to the management strategy; The reference data and management strategy are obtained according to the following steps: Aging experiments were performed on multiple reference batteries under different working conditions; disassembling at least one of the reference batteries every a preset number of cycles and analyzing changes in the structure and composition of the disassembled batteries; When the disassembled battery meets the preset conditions, reference data of the disassembled battery is obtained, and a management strategy corresponding to the preset conditions is determined.

2. The method according to claim 1, characterized in that: The management strategy includes at least one of the following: changing the use strategy of the target battery; repairing the target battery; recycling the target battery according to a preset recycling method.

3. The method according to claim 2, characterized in that When the management strategy is to recycle the target battery according to a preset recycling method, the preset condition includes that the structural damage of the positive electrode and / or the negative electrode reaches 10% to 20% of the initial value, and the management strategy corresponding to the preset condition includes: recycling the target battery according to a wet chemical method; The preset conditions also include that the amount of structural damage to the positive electrode and / or the negative electrode reaches more than 20% of the initial amount. The management strategy corresponding to the preset conditions includes: recycling the target battery according to a pyrometallurgical method.

4. The method according to claim 2, characterized in that: When the management strategy is to change the usage strategy of the target battery, the preset condition includes that the content of effective ingredients in the electrolyte is less than 90% of the initial value, and the management strategy corresponding to the preset condition includes: reducing the charging rate of the target battery, and / or adjusting the discharge depth range of the target battery.

5. The method according to claim 2, characterized in that: When the management strategy is to repair the target battery, the preset condition includes that the content of active ingredients in the electrolyte is less than 90% of the initial content, and the management strategy corresponding to the preset condition includes: replenishing the electrolyte in the target battery.

6. The method according to any one of claims 1 to 5, characterized in that: The operating data includes at least one of the following: rate of change of capacity with voltage, DC impedance, capacity, depolarization speed, and health status.

7. The method according to any one of claims 1 to 5, characterized in that: The method further comprises: Calculating the comprehensive benefits of the management strategies of the plurality of target batteries; Adjust the management strategy based on the comprehensive benefits.

8. A battery management device, characterized in that: The device comprises: A data acquisition module, used to acquire the operating data of the target battery; A comparison module, used for comparing the difference between the operating data and the reference data; A management module, configured to determine a management strategy based on the difference, and manage the target battery according to the management strategy; The reference data and management strategy are obtained according to the following steps: Aging experiments were performed on multiple reference batteries under different working conditions; disassembling at least one of the reference batteries every a preset number of cycles and analyzing changes in the structure and composition of the disassembled batteries; When the disassembled battery meets the preset conditions, reference data of the disassembled battery is obtained, and a management strategy corresponding to the preset conditions is determined.

9. A computer device comprising a memory and a processor, characterized in that: The memory stores a computer program, and when the program is executed by the processor, the program can implement the steps of the battery management method according to any one of claims 1 to 7.

10. A computer-readable storage medium for storing a computer program, characterized in that: When the program is executed by a computer or a processor, the program implements the steps of the battery management method according to any one of claims 1 to 7.

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