Battery parameter consistency detection method, electronic device and storage medium

Abstract

The embodiments of the present application disclose a method, device, electronic device and storage medium for detecting battery parameter consistency, including: determining pulse boundary parameters of a sample battery; constructing a pulse charge and discharge strategy corresponding to the pulse boundary parameters; performing a parameter consistency test on the sample battery based on the pulse charge and discharge strategy; outputting a consistency benchmark according to the test results, and detecting the parameter consistency of the battery to be tested according to the consistency benchmark. This scheme can not only improve the accuracy of battery parameter consistency detection, but also improve the efficiency of battery parameter consistency detection.

Description

Technical Field

[0001] The present application relates to the technical field of battery charging, and in particular to a method for detecting battery parameter consistency, an electronic device, and a storage medium. Background Art

[0002] At present, lithium-ion batteries have incomparable advantages over other energy storage batteries, such as high energy density, light weight, and good safety performance. They have been successfully used in various electronic products, communication equipment, automation instruments and various power tools. They have also been widely used in electric bicycles and electric vehicles. They are also very attractive to military fields such as aerospace, aviation, and field warfare.

[0003] The current mainstream battery parameter consistency detection solution is based on static pressure difference, but the static pressure difference can only characterize the discreteness of voltage, and does not characterize the discreteness of other indicators such as the tolerance and internal resistance extreme difference of battery consistency. That is, the current battery parameter consistency detection results are inaccurate. Summary of the invention

[0004] The embodiments of the present application provide a method, device, electronic device and storage medium for detecting battery parameter consistency, which can improve the accuracy of detecting battery parameter consistency.

[0005] The present application provides a method for detecting battery parameter consistency, including:

[0006] Determine pulse boundary parameters of sample cells;

[0007] Constructing a pulse charge and discharge strategy corresponding to the pulse boundary parameters;

[0008] Performing parameter consistency test on the sample battery based on the pulse charge and discharge strategy;

[0009] A consistency benchmark is output according to the test result, and parameter consistency of the battery to be tested is detected according to the consistency benchmark.

[0010] Optionally, in some embodiments of the present application, the step of constructing a pulse charge and discharge strategy corresponding to the pulse boundary parameter includes:

[0011] Extracting charging boundary information and discharging boundary information of the sample battery from the pulse boundary parameters;

[0012] A pulse charge and discharge strategy corresponding to the pulse boundary parameters is constructed according to the charge boundary information and the discharge boundary information.

[0013] Optionally, in some embodiments of the present application, constructing a pulse charge and discharge strategy corresponding to the pulse boundary parameter according to the charging boundary information and the discharging boundary information includes:

[0014] Determine, according to the charging boundary information and the discharging boundary information, the charging upper limit and the charging lower limit corresponding to the pulse charging, and the discharging upper limit and the discharging lower limit corresponding to the pulse discharging;

[0015] Based on the charging upper limit, charging lower limit, discharging upper limit and discharging lower limit, a pulse charging and discharging strategy corresponding to the pulse boundary parameters is constructed.

[0016] Optionally, in some embodiments of the present application, constructing a pulse charge and discharge strategy corresponding to the pulse boundary parameter based on the charging upper limit, the charging lower limit, the discharging upper limit and the discharging lower limit includes:

[0017] Determining the current magnitude of the pulse current according to the charging upper limit, the charging lower limit, the discharging upper limit and the discharging lower limit;

[0018] Get the preset pulse width;

[0019] According to the current magnitude and pulse width, a pulse charge and discharge strategy corresponding to the pulse boundary parameters is constructed.

[0020] Optionally, in some embodiments of the present application, the performing parameter consistency test on the sample battery based on the pulse charge and discharge strategy includes:

[0021] Determining the charge and discharge parameters corresponding to the pulse charge and discharge strategy;

[0022] Charging the sample battery to a preset state;

[0023] A parameter consistency test is performed on the sample battery charged to a preset state according to the charge and discharge parameters.

[0024] Optionally, in some embodiments of the present application, after performing parameter consistency test on the sample battery charged to a preset state according to the charge and discharge parameters, the method further includes:

[0025] Obtaining voltage changes of the sample battery during pulse charge and discharge, and;

[0026] Obtaining the change in internal resistance of the sample battery during pulse charge and discharge, and;

[0027] Obtaining temperature changes of the sample battery during pulse charge and discharge;

[0028] The parameter consistency of the sample battery is quantified according to the voltage change, internal resistance change and temperature change.

[0029] Optionally, in some embodiments of the present application, determining the pulse boundary parameters of the sample battery includes:

[0030] Determine the charge current boundary, discharge current boundary, and temperature boundary of the sample battery.

[0031] Optionally, in some embodiments of the present application, outputting a consistency benchmark according to the test result, and detecting parameter consistency of the battery to be tested according to the consistency benchmark, includes:

[0032] Obtaining test results of each of the sample batteries;

[0033] Performing statistical analysis on the test results of each of the sample batteries to obtain a consistency benchmark;

[0034] A parameter consistency test is performed on the battery to be tested, and the test result of the battery to be tested is compared with the consistency reference cell to detect the parameter consistency of the battery to be tested.

[0035] Correspondingly, the present application also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the steps of the method for detecting battery parameter consistency as described above are performed.

[0036] The present application also provides a computer-readable storage medium, wherein the storage medium stores a computer program, and when the computer program is executed by a processor, the steps of any of the above-mentioned methods for detecting consistency of battery parameters are implemented.

[0037] The embodiment of the present application provides a method for detecting battery parameter consistency, an electronic device, and a storage medium. After determining the pulse boundary parameters of a sample battery, a pulse charge and discharge strategy corresponding to the pulse boundary parameters is constructed. Then, a parameter consistency test is performed on the sample battery based on the pulse charge and discharge strategy. Finally, a consistency benchmark is output according to the test results, and the parameter consistency of the battery to be tested is detected according to the consistency benchmark. The battery parameter consistency detection scheme provided in the present application performs a parameter consistency test on the sample battery based on the pulse charge and discharge strategy corresponding to the pulse boundary parameters, thereby obtaining a consistency benchmark, which can more accurately evaluate the performance and consistency of the battery. Subsequently, the parameter consistency of the battery to be tested can be detected according to the consistency benchmark. Therefore, the battery parameter consistency detection scheme provided in the present application can not only improve the accuracy of battery parameter consistency detection, but also improve the efficiency of battery parameter consistency detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0039] Figure 1 It is a flowchart of a method for detecting battery parameter consistency provided in an embodiment of the present application;

[0040] Figure 2 It is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0042] Embodiments of the present application provide a method, device, electronic device, and storage medium for detecting battery parameter consistency.

[0043] Among them, the battery parameter consistency detection device can be specifically integrated in a terminal, the terminal can include a tablet computer or a personal computer (PC), the terminal can establish a wired or wireless connection with a server, the server can include an independently running server or a distributed server, and can also include a server cluster composed of multiple servers.

[0044] It should be noted that the order of description of the following embodiments is not intended to limit the priority order of the embodiments.

[0045] A method for detecting battery parameter consistency includes: determining pulse boundary parameters of a sample battery; constructing a pulse charge and discharge strategy corresponding to the pulse boundary parameters; performing parameter consistency testing on the sample battery based on the pulse charge and discharge strategy; outputting a consistency benchmark according to the test results, and detecting parameter consistency of the battery to be tested according to the consistency benchmark.

[0046] See also Figure 1 , Figure 1 A schematic diagram of a flow chart of a method for detecting battery parameter consistency provided in an embodiment of the present application. The specific flow chart of the method for detecting battery parameter consistency may be as follows:

[0047] 101. Determine the pulse boundary parameters of the sample battery.

[0048] Pulse boundary parameters refer to a series of parameter limits that need to be set when performing pulse charge and discharge tests on batteries in order to ensure battery safety and test effectiveness. Pulse boundary parameters define the maximum or minimum value that a battery can withstand during pulse charge and discharge to prevent battery damage and ensure the reliability of test results. Sample batteries refer to a portion of batteries randomly selected from a battery production batch for various tests and analyses to evaluate the performance, safety, and consistency of the entire batch of batteries.

[0049] Among them, the pulse boundary parameters may include maximum charging voltage, minimum charging voltage, maximum discharge current, minimum discharge voltage and maximum charging current, etc. For example, you can obtain the battery specification sheet from the battery manufacturer to understand the basic information of the battery such as nominal voltage, rated capacity, maximum charge and discharge current, charging cut-off voltage, and discharging cut-off voltage.

[0050] Optionally, in some embodiments of the present application, the step of “determining the pulse boundary parameters of the sample battery” may specifically include:

[0051] Determine the charge current boundary, discharge current boundary, and temperature boundary of the sample battery.

[0052] 102. Construct a pulse charging and discharging strategy corresponding to the pulse boundary parameters.

[0053] The pulse charge and discharge strategy is a test method used to evaluate battery performance and consistency. The pulse charge and discharge strategy detects the dynamic response of the sample battery by simulating the working conditions of the sample battery in actual applications.

[0054] For example, the amplitude (current or power), width (duration), interval (time interval between pulses) and number (total number of pulse cycles) of pulse charge and discharge can be defined according to the pulse boundary parameters of the battery. Then, based on the amplitude (current or power), width (duration), interval (time interval between pulses) and number (total number of pulse cycles) of pulse charge and discharge, a specific charge and discharge mode is constructed, including constant current charge and discharge, constant voltage charge and discharge, or constant power charge and discharge. At the same time, protection measures such as overcharge, over discharge, and overheating are constructed to ensure that the charge and discharge process can be stopped immediately once the safety threshold is reached or exceeded during the test. Based on this, a pulse charge and discharge strategy corresponding to the pulse boundary parameters is generated.

[0055] Optionally, in some embodiments of the present application, the step of “constructing a pulse charge and discharge strategy corresponding to the pulse boundary parameters” may specifically include:

[0056] Extracting charging boundary information and discharging boundary information of the sample battery from the pulse boundary parameters;

[0057] According to the charging boundary information and the discharging boundary information, a pulse charging and discharging strategy corresponding to the pulse boundary parameters is constructed.

[0058] The charge boundary information includes the maximum charge voltage, the minimum charge voltage and the maximum charge current, where the maximum charge voltage is the maximum voltage that the battery can withstand during charging; the minimum charge voltage is the minimum voltage that the battery should reach during charging, which is usually related to the battery's discharge cut-off voltage; the maximum charge current is the maximum current that the battery can withstand during charging. The discharge boundary information includes the maximum discharge voltage, the minimum discharge voltage and the maximum discharge current, where the discharge boundary information is that the maximum discharge voltage is the maximum voltage that the battery can withstand during discharge; the minimum discharge voltage is the minimum voltage that the battery should avoid being lower than during discharge to prevent over-discharge; the maximum discharge current is the maximum current that the battery can withstand during discharge.

[0059] For example, specifically, if the maximum charge and discharge current in the charging boundary information is determined to be 2A, first, the constant current charge and discharge mode (CC) can be selected for pulse testing, because the constant current charge and discharge mode is simple and easy to control. Then, 1.5A is selected as the current for pulse charge and discharge, which is less than the maximum charge and discharge current (2A) to ensure safety. Next, the duration of each pulse is set to 10 seconds, which is enough to simulate the dynamic response of the battery while avoiding overheating. Set the pulse interval to 5 seconds so that the battery has time to cool and the voltage recovers. Set the total number of pulse cycles to 100 to evaluate the battery's cycle performance and consistency. Then, construct a specific charging strategy: Start from 3.0V and charge the battery at a current of 1.5A. Continue charging for 10 seconds until the battery voltage reaches 4.2V or the pulse time ends. Stop charging for 5 seconds to allow the battery voltage and temperature to recover. Repeat the above process until 100 pulse cycles are completed. Construct a specific discharge strategy: Start from 4.2V and discharge the battery at a current of 1.5A. Continue discharging for 10 seconds until the battery voltage drops to 2.5V or the pulse time ends. Stop discharging for 5 seconds to allow the battery voltage and temperature to recover. Repeat the above process until 100 pulse cycles are completed.

[0060] Optionally, in some embodiments of the present application, the step of “constructing a pulse charge and discharge strategy corresponding to the pulse boundary parameters based on the charging upper limit, the charging lower limit, the discharging upper limit and the discharging lower limit” may specifically include:

[0061] Determine the current magnitude of the pulse current according to the charging upper limit, the charging lower limit, the discharging upper limit and the discharging lower limit;

[0062] Get the preset pulse width;

[0063] According to the current size and pulse width, a pulse charging and discharging strategy corresponding to the pulse boundary parameters is constructed.

[0064] The upper charge limit refers to the maximum voltage that the battery can withstand during the charging process; the lower charge limit refers to the minimum voltage that the battery should reach during charging; the upper discharge limit refers to the maximum voltage that the battery can withstand during the discharge process; the lower discharge limit refers to the minimum voltage that the battery should avoid falling below during discharge.

[0065] For example, based on the maximum charge current and the maximum discharge current, determine the current range that can be used for pulse testing. Select a pulse current value within this current range, which is usually less than or equal to the maximum charge and discharge current to ensure safety and battery life. For example, if the maximum charge current is 2A and the maximum discharge current is 2A, you can select 1.5A or 1A as the pulse current.

[0066] Pulse width refers to the duration of each pulse charge and discharge cycle. This value should be preset according to the battery's charge and discharge characteristics and the purpose of the test. For example, if the preset pulse width is 10 seconds, then each pulse will last for 10 seconds. Construct a charge pulse strategy: Start charging from the lower limit of charge. Charge the battery with a preset pulse current for the time set by the pulse width. Stop the charge pulse when the battery voltage reaches the upper limit of charge. Set an interval between two consecutive charge pulses to allow the battery voltage and temperature to recover. Construct a discharge pulse strategy: Start discharging from the upper limit of charge. Discharge the battery with a preset pulse current for the time set by the pulse width. Stop the discharge pulse when the battery voltage reaches the lower limit of discharge.

[0067] 103. Perform parameter consistency test on sample batteries based on pulse charge and discharge strategy.

[0068] Parameter consistency testing is a test used to evaluate whether the key performance parameters of each battery cell in a battery batch are consistent. The purpose of parameter consistency testing is to ensure the consistency of battery cells in key parameters such as voltage, capacity, internal resistance, etc., thereby ensuring the stability and safety of the battery system in long-term operation.

[0069] For example, pulse charge and discharge can be applied to the sample battery according to the set pulse charge and discharge strategy. Key parameters such as voltage, current, internal resistance and temperature of the sample battery during the pulse charge and discharge process are recorded. Statistical analysis is performed on the collected data to calculate statistical parameters such as mean value, standard deviation, coefficient of variation, etc. to quantify the consistency of battery parameters.

[0070] Optionally, in some embodiments of the present application, the step of “performing parameter consistency test on sample batteries based on pulse charge and discharge strategy” may specifically include:

[0071] Determine the charge and discharge parameters corresponding to the pulse charge and discharge strategy;

[0072] charging the sample battery to a preset state;

[0073] Perform parameter consistency test on sample batteries charged to a preset state according to the charge and discharge parameters.

[0074] The preset state refers to a specific voltage or charge level that the battery should reach before the pulse test. For example, the charge and discharge parameters corresponding to the pulse charge and discharge strategy are determined, and the charge and discharge parameters include pulse current, pulse voltage, pulse width, pulse interval, and number of pulses, etc. Then, the sample battery is charged to the preset state, such as charging the sample battery to a near minimum charging voltage. Then, according to the pulse charge and discharge strategy, the sample battery is subjected to a pulse charge and discharge test. During the test, key parameters such as battery voltage, current, internal resistance, and temperature are monitored and recorded in real time. The data acquisition system is used to record the response data of the battery during the pulse charge and discharge process. The voltage changes of the battery during the pulse charge and discharge process are analyzed, and the voltage platform, rise and fall rates, etc. are checked to evaluate the voltage consistency. Through the pulse charge and discharge test, the internal resistance changes of the battery are evaluated, and the consistency of the internal resistance can reflect the consistency of the battery health. The collected data is statistically analyzed, including calculating statistical parameters such as the mean, standard deviation, and coefficient of variation to quantify the consistency of the battery parameters.

[0075] Optionally, in some embodiments of the present application, after the step of “performing a parameter consistency test on a sample battery charged to a preset state according to the charge and discharge parameters”, the following may also be specifically included:

[0076] Obtain the voltage change of the sample battery during the pulse charge and discharge process, and;

[0077] Obtain the change in internal resistance of the sample battery during pulse charge and discharge, and;

[0078] Obtain the temperature change of the sample battery during the pulse charge and discharge process;

[0079] Quantify the parameter consistency of the sample battery based on voltage change, internal resistance change, and temperature change.

[0080] For example, specifically, obtain the voltage change in each pulse cycle, including the peak value, valley value and average value of the voltage; obtain the internal resistance change in each pulse cycle, which can be calculated by the ratio of voltage to current; obtain the temperature change in each pulse cycle, including the highest temperature and the lowest temperature. Calculate the statistical parameters of voltage change, such as the mean, standard deviation and coefficient of variation. Determine which batteries have voltage changes within an acceptable range. Calculate the statistical parameters of internal resistance change, such as the mean, standard deviation and coefficient of variation. Evaluate the consistency of internal resistance changes and determine which batteries have internal resistance changes within an acceptable range. Calculate the statistical parameters of temperature changes, such as the mean, standard deviation and coefficient of variation. Evaluate the consistency of temperature changes and determine which batteries have temperature changes within an acceptable range. Finally, combine the changes in voltage, internal resistance and temperature to comprehensively evaluate the parameter consistency of the sample batteries, such as using statistical tools to visualize data distribution and consistency.

[0081] 104. Output a consistency benchmark according to the test results, and detect parameter consistency of the battery to be tested according to the consistency benchmark.

[0082] A consistency benchmark is a set of reference values ​​or ranges used to determine whether battery performance parameters meet preset standards during battery testing and evaluation. These benchmarks are usually based on statistical analysis of test results of sample batteries and are intended to ensure the consistency and reliability of batteries during production, use, and testing. The consistency benchmark can include multiple key performance parameters, such as voltage changes during charging and discharging; changes in the battery's internal resistance during charging and discharging; the actual available capacity of the battery; and temperature changes during charging and discharging.

[0083] For example, specifically, the test data of the sample battery is analyzed in detail, including changes in voltage, internal resistance and temperature. Calculate statistical indicators of key parameters, such as mean, standard deviation, coefficient of variation, etc. Based on the results of statistical analysis, determine the consistency benchmark range of each parameter. For example, set the acceptable range of voltage change to ±5%. When testing the battery to be tested, the same pulse charge and discharge strategy as the sample battery can be applied to the battery to be tested. Record the voltage, internal resistance and temperature changes of the battery to be tested during the pulse charge and discharge process in real time. Compare the test results of the battery to be tested with the consistency benchmark to determine whether the parameters of each battery are within an acceptable range. Identify battery cells whose parameters exceed the consistency benchmark, and these batteries require further inspection or are excluded from qualified products.

[0084] Optionally, in some embodiments of the present application, the step of “outputting a consistency benchmark according to the test result, and detecting parameter consistency of the battery to be tested according to the consistency benchmark” may specifically include:

[0085] Obtaining test results of each sample battery;

[0086] Perform statistical analysis on the test results of each sample battery to obtain a consistency benchmark;

[0087] Perform parameter consistency test on the battery to be tested, and compare the test result of the battery to be tested with the consistency reference cell to detect the parameter consistency of the battery to be tested.

[0088] For example, specifically, statistical analysis is performed on the test data of the sample battery to calculate statistical parameters such as the mean, standard deviation, maximum value, and minimum value. Based on the statistical parameters, the consistency range of voltage, internal resistance, and temperature is determined. For example, a threshold value of the standard deviation or coefficient of variation can be set to define the consistency range. Then, the same pulse charge and discharge test process is repeated for the battery to be tested. Parameters such as voltage, internal resistance, and temperature of the battery to be tested during the test are recorded. The test results of the battery to be tested are compared with the established consistency benchmark. Determine whether the parameters of the battery to be tested fall within the range of the consistency benchmark. Identify the batteries to be tested whose test results exceed the consistency benchmark and mark them as abnormal batteries.

[0089] The embodiment of the present application provides a method for detecting battery parameter consistency. After determining the pulse boundary parameters of the sample battery, a pulse charge and discharge strategy corresponding to the pulse boundary parameters is constructed. Then, a parameter consistency test is performed on the sample battery based on the pulse charge and discharge strategy. Finally, a consistency benchmark is output according to the test results, and the parameter consistency of the battery to be tested is detected according to the consistency benchmark. The battery parameter consistency detection scheme provided in the present application performs a parameter consistency test on the sample battery based on the pulse charge and discharge strategy corresponding to the pulse boundary parameters, thereby obtaining a consistency benchmark, which can more accurately evaluate the performance and consistency of the battery. Subsequently, the parameter consistency of the battery to be tested can be detected according to the consistency benchmark. Therefore, the battery parameter consistency detection scheme provided in the present application can not only improve the accuracy of battery parameter consistency detection, but also improve the efficiency of battery parameter consistency detection.

[0090] In addition, the present application also provides an electronic device, such as Figure 2 As shown, it shows a schematic diagram of the structure of the electronic device involved in the embodiment of the present application, specifically:

[0091] The electronic device may include components such as a processor 301 with one or more processing cores, a memory 302 with one or more computer-readable storage media, a power supply 303, and an input unit 304. Those skilled in the art will appreciate that Figure 2 The electronic device structure shown in the figure does not constitute a limitation on the electronic device, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0092] The processor 301 is the control center of the electronic device. It uses various interfaces and lines to connect various parts of the entire electronic device. By running or executing software programs and / or modules stored in the memory 302, and calling data stored in the memory 302, it executes various functions of the electronic device and processes data, thereby monitoring the electronic device as a whole. Optionally, the processor 301 may include one or more processing cores; preferably, the processor 301 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, and application programs, and the modem processor mainly processes wireless communications. It is understandable that the above-mentioned modem processor may not be integrated into the processor 301.

[0093] The memory 302 can be used to store software programs and modules. The processor 301 executes various functional applications and battery parameter consistency detection by running the software programs and modules stored in the memory 302. The memory 302 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area may store data created according to the use of the electronic device, etc. In addition, the memory 302 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices. Accordingly, the memory 302 may also include a memory controller to provide the processor 301 with access to the memory 302.

[0094] The electronic device also includes a power supply 303 for supplying power to each component. Preferably, the power supply 303 can be logically connected to the processor 301 through a power management system, so that the power management system can manage charging, discharging, power consumption and other functions. The power supply 303 can also include one or more DC or AC power supplies, recharging systems, power failure detection circuits, power converters or inverters, power status indicators and other arbitrary components.

[0095] The electronic device may further include an input unit 304, which may be used to receive input digital or character information and generate keyboard, mouse, joystick, optical or trackball signal input related to user settings and function control.

[0096] Although not shown, the electronic device may further include a display unit, etc., which will not be described in detail herein. Specifically in this embodiment, the processor 301 in the electronic device will load the executable files corresponding to the processes of one or more application programs into the memory 302 according to the following instructions, and the processor 301 will run the application programs stored in the memory 302, thereby realizing various functions, as follows:

[0097] Determine the pulse boundary parameters of the sample battery; construct a pulse charge and discharge strategy corresponding to the pulse boundary parameters; perform parameter consistency test on the sample battery based on the pulse charge and discharge strategy; output a consistency benchmark based on the test results, and detect the parameter consistency of the battery to be tested based on the consistency benchmark.

[0098] The specific implementation of the above operations can be found in the previous embodiments, which will not be described in detail here.

[0099] After determining the pulse boundary parameters of the sample battery, the embodiment of the present application constructs a pulse charge and discharge strategy corresponding to the pulse boundary parameters, then performs a parameter consistency test on the sample battery based on the pulse charge and discharge strategy, and finally outputs a consistency benchmark according to the test results, and detects the parameter consistency of the battery to be tested according to the consistency benchmark. The battery parameter consistency detection scheme provided in the present application performs a parameter consistency test on the sample battery based on the pulse charge and discharge strategy corresponding to the pulse boundary parameters, thereby obtaining a consistency benchmark, which can more accurately evaluate the performance and consistency of the battery, and subsequently the parameter consistency of the battery to be tested can be detected according to the consistency benchmark. Therefore, the battery parameter consistency detection scheme provided in the present application can not only improve the accuracy of battery parameter consistency detection, but also improve the efficiency of battery parameter consistency detection.

[0100] A person of ordinary skill in the art will appreciate that all or part of the steps in the various methods of the above embodiments may be completed by instructions, or by controlling related hardware through instructions. The instructions may be stored in a computer-readable storage medium and loaded and executed by a processor.

[0101] To this end, an embodiment of the present application provides a storage medium in which a plurality of instructions are stored, and the instructions can be loaded by a processor to execute the steps in any of the battery parameter consistency detection methods provided in the embodiments of the present application. For example, the instructions can execute the following steps:

[0102] Determine the pulse boundary parameters of the sample battery; construct a pulse charge and discharge strategy corresponding to the pulse boundary parameters; perform parameter consistency test on the sample battery based on the pulse charge and discharge strategy; output a consistency benchmark based on the test results, and detect the parameter consistency of the battery to be tested based on the consistency benchmark.

[0103] The specific implementation of the above operations can be found in the previous embodiments, which will not be described in detail here.

[0104] The storage medium may include: a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0105] Since the instructions stored in the storage medium can execute the steps in any one of the battery parameter consistency detection methods provided in the embodiments of the present application, the beneficial effects that can be achieved by any one of the battery parameter consistency detection methods provided in the embodiments of the present application can be achieved. For details, please refer to the previous embodiments and will not be repeated here.

[0106] The above is a detailed introduction to a battery parameter consistency detection method, device, electronic device and storage medium provided in an embodiment of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A method for detecting battery parameter consistency, characterized in that: include: Determine pulse boundary parameters of sample cells; Constructing a pulse charge and discharge strategy corresponding to the pulse boundary parameters; Performing parameter consistency test on the sample battery based on the pulse charge and discharge strategy; A consistency benchmark is output according to the test result, and parameter consistency of the battery to be tested is detected according to the consistency benchmark.

2. The detection method according to claim 1, characterized in that: The constructing of the pulse charge and discharge strategy corresponding to the pulse boundary parameter includes: Extracting charging boundary information and discharging boundary information of the sample battery from the pulse boundary parameters; A pulse charge and discharge strategy corresponding to the pulse boundary parameters is constructed according to the charge boundary information and the discharge boundary information.

3. The detection method according to claim 2, characterized in that: The constructing a pulse charge and discharge strategy corresponding to the pulse boundary parameter according to the charging boundary information and the discharging boundary information includes: Determine, according to the charging boundary information and the discharging boundary information, the charging upper limit and the charging lower limit corresponding to the pulse charging, and the discharging upper limit and the discharging lower limit corresponding to the pulse discharging; Based on the charging upper limit, charging lower limit, discharging upper limit and discharging lower limit, a pulse charging and discharging strategy corresponding to the pulse boundary parameters is constructed.

4. The detection method according to claim 3, characterized in that: The constructing a pulse charge and discharge strategy corresponding to the pulse boundary parameter based on the charging upper limit, the charging lower limit, the discharging upper limit and the discharging lower limit includes: Determining the current magnitude of the pulse current according to the charging upper limit, the charging lower limit, the discharging upper limit and the discharging lower limit; Get the preset pulse width; According to the current magnitude and pulse width, a pulse charge and discharge strategy corresponding to the pulse boundary parameters is constructed.

5. The monitoring method according to any one of claims 1 to 4, characterized in that: The performing parameter consistency test on the sample battery based on the pulse charge and discharge strategy includes: Determining the charge and discharge parameters corresponding to the pulse charge and discharge strategy; Charging the sample battery to a preset state; A parameter consistency test is performed on the sample battery charged to a preset state according to the charge and discharge parameters.

6. The detection method according to claim 5, characterized in that: After performing parameter consistency test on the sample battery charged to a preset state according to the charge and discharge parameters, the method further includes: Obtaining voltage changes of the sample battery during pulse charge and discharge, and; Obtaining the change in internal resistance of the sample battery during pulse charge and discharge, and; Obtaining temperature changes of the sample battery during pulse charge and discharge; The parameter consistency of the sample battery is quantified according to the voltage change, internal resistance change and temperature change.

7. The detection method according to claim 1, characterized in that: The step of determining the pulse boundary parameters of the sample battery comprises: Determine the charge current boundary, discharge current boundary, and temperature boundary of the sample battery.

8. The detection method according to claim 1, characterized in that: Outputting a consistency benchmark according to the test result, and detecting parameter consistency of the battery to be tested according to the consistency benchmark, includes: Obtaining test results of each of the sample batteries; Performing statistical analysis on the test results of each of the sample batteries to obtain a consistency benchmark; A parameter consistency test is performed on the battery to be tested, and the test result of the battery to be tested is compared with the consistency reference cell to detect the parameter consistency of the battery to be tested.

9. An electronic device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, the steps of the method for detecting battery parameter consistency as described in any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium, characterized in that: A computer program is stored thereon, wherein when the computer program is executed by a processor, the steps of the method for detecting battery parameter consistency as described in any one of claims 1 to 7 are implemented.

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