Battery cell charging and discharging detection method, device and equipment and readable storage medium

Abstract

The invention discloses a battery cell charging and discharging detection method, device and equipment and a readable storage medium, and relates to the technical field of battery cells. The battery cell charging and discharging detection method comprises the following steps: acquiring test current when a target battery cell is charged and discharged in each candidate mode; the candidate modes at least comprise a constant current mode, a constant power mode, a constant resistance mode, a constant current and constant voltage mode, a constant power and constant voltage mode and a shelving mode; selecting a target test channel from the candidate test channels according to the test current value of the test current; and carrying out charging and discharging detection on the target battery cell based on the target detection channel. According to the scheme, the accuracy of charging and discharging detection of the battery cell can be improved.

Description

Technical Field

[0001] The present invention relates to the field of battery cell technology, and in particular to a battery cell charge and discharge detection method, device, equipment and readable storage medium. Background Art

[0002] With the development of science and technology and the progress of society, people's awareness of environmental protection has gradually increased. New energy has gradually begun to replace traditional energy and become the mainstream energy, such as solar energy, wind energy, tidal energy, etc. However, these new energy sources usually cannot be used directly. They usually need to be converted into electrical energy first and then used. The use of electrical energy usually requires the help of lithium batteries.

[0003] With the further improvement of manufacturing technology in the fields of new energy vehicles, robots, civil drones, aerospace, etc., the application field of lithium batteries has also developed rapidly. In order to ensure the stability of the operation of automobiles, drones, etc., it is necessary to monitor the various states of lithium battery cells in real time. However, the current monitoring methods are not stable and accurate enough to accurately grasp the real-time state of lithium battery cells during charging and discharging. Therefore, there is an urgent need for a cell charging and discharging detection method that can improve detection stability and data accuracy. Summary of the invention

[0004] The object of the present invention is to provide a method, device, equipment and readable storage medium for detecting charge and discharge of a battery cell, which achieves the effect of increasing the accuracy of charge and discharge detection by performing charge and discharge detection on a target battery cell under various candidate modes based on different channels.

[0005] In order to achieve the above object, the present invention provides the following technical solutions: In a first aspect, the present invention provides a method for detecting charging and discharging of a battery cell, the method comprising: Obtaining a test current when the target battery cell is charged and discharged in each candidate mode; the candidate modes include at least a constant current mode, a constant power mode, a constant resistance mode, a constant current constant voltage mode, a constant power constant voltage mode and a standby mode; selecting a target test channel from candidate test channels according to a test current value of the test current; Based on the target measurement channel, the target battery cell is charged and discharged.

[0006] In some embodiments, selecting a target test channel from candidate test channels according to a test current value of the test current includes: If the test current value is less than or equal to the first current threshold, determining the first test channel as the target test channel; If the test current value is greater than the first current threshold and less than or equal to the second current threshold, the second test channel is determined to be the target test channel; If the test current value is greater than the second current threshold, the third test channel is determined to be the target test channel.

[0007] In some embodiments, the first test channel is a single channel; the second test channel is a channel in which two single channels are connected in parallel; and the third test channel is a channel in which four single channels are connected in parallel.

[0008] In some embodiments, based on the target measurement channel, charging and discharging detection is performed on the target battery cell, including: Based on the target test channel, obtain the test data of the target battery cell in each candidate mode; Obtain standard data of the target battery cell under each candidate mode; Based on the test data and standard data, determine the operating conditions of the target battery cell under charging and discharging conditions.

[0009] In some embodiments, determining the operating condition of the target battery cell under the charge and discharge state according to the test data and the standard data includes: If the test data does not meet the standard data in any candidate mode, it is determined that the target battery cell is in an abnormal operating condition.

[0010] In some embodiments, the method further comprises: If the target battery cell is in an abnormal condition, the type of abnormal condition is determined based on the test data and standard data; According to the type of abnormal working condition, send abnormal working condition protection instructions.

[0011] In a second aspect, the present invention further provides a battery cell charge and discharge detection device, the device comprising: A current acquisition module, used to acquire a test current of the target cell when it is charged and discharged in each candidate mode; the candidate modes include at least a constant current mode, a constant power mode, a constant resistance mode, a constant current constant voltage mode, a constant power constant voltage mode and a standby mode; A channel selection module, used for selecting a target test channel from candidate test channels according to a test current value of the test current; The battery cell detection module is used to perform charge and discharge detection on the target battery cell based on the target measurement channel.

[0012] In a third aspect, the present invention further provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the battery cell charge and discharge detection method provided in the first aspect when executing the computer program.

[0013] In a fourth aspect, the present invention further provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the battery cell charge and discharge detection method provided in the first aspect is implemented.

[0014] In a fifth aspect, the present invention further provides a computer program product, including a computer program, which, when executed by a processor, implements the battery cell charge and discharge detection method provided in the first aspect.

[0015] The beneficial effects of the present invention are: First, obtain the test current of the target battery cell when it is charged and discharged in each candidate mode; the candidate modes include at least constant current mode, constant power mode, constant resistance mode, constant current constant voltage mode, constant power constant voltage mode and standby mode; then select the target test channel from the candidate test channels according to the test current value of the test current; finally, perform charge and discharge detection on the target battery cell based on the target test channel. The charge and discharge detection method in this scheme distinguishes the candidate modes of the target battery cell, and also selects the appropriate test channel according to the test current. Therefore, when performing battery cell charge and discharge detection in this scheme, the detection process is more refined and rigorous, thereby increasing the accuracy of battery cell charge and discharge detection.

[0016] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic flow chart of a method for detecting charging and discharging a battery cell according to an embodiment of the present invention; Figure 2 A schematic diagram of the structure of a candidate test channel according to an embodiment of the present invention; Figure 3 A structural diagram of a test system for performing charge and discharge tests on a target battery cell according to an embodiment of the present invention; Figure 4 A schematic diagram of a process for performing charge and discharge detection on a target battery cell according to an embodiment of the present invention; Figure 5 A schematic diagram of a process of sending a protection instruction according to an embodiment of the present invention; Figure 6 It is a schematic flow chart of another battery cell charge and discharge detection method shown in one embodiment of the present invention; Figure 7 It is a structural diagram of a battery cell charge and discharge detection device shown in one embodiment of the present invention; Figure 8 It is a structural diagram of another battery cell charge and discharge detection device shown in one embodiment of the present invention; Fig. 9 A structural diagram of another battery cell charge and discharge detection device shown in one embodiment of the present invention; Fig.10A schematic diagram of the structure of an electronic device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] It should be noted that references to "one embodiment", "embodiment", "example embodiment", etc. in this specification refer to the embodiment being described which may include specific features, structures or characteristics, but not every embodiment must include these specific features, structures or characteristics. In addition, such expressions do not refer to the same embodiment. Furthermore, when describing specific features, structures or characteristics in conjunction with an embodiment, whether or not there is an explicit description, it is indicated that incorporating such features, structures or characteristics into other embodiments is within the knowledge of those skilled in the art.

[0020] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0021] In some embodiments, Figure 1 As shown, a method for detecting battery cell charge and discharge is provided, comprising: S101, obtaining a test current of a target battery cell when it is charged and discharged in each candidate mode.

[0022] Among them, the candidate modes include at least constant current mode, constant power mode, constant resistance mode, constant current constant voltage mode, constant power constant voltage mode and standby mode; the constant current mode maintains a constant current during charging and discharging, the constant power mode maintains a constant power during charging and discharging, the constant resistance mode maintains a constant resistance during charging and discharging, the constant current constant voltage mode maintains both current and voltage constant during charging and discharging, the constant power constant voltage mode maintains power and voltage constant during charging and discharging, and the standby mode is a mode in which the target battery cell is not charged or discharged; the target battery cell is a battery cell that needs to be tested for charging and discharging, and the test current is the current of the target battery cell during charging and discharging testing.

[0023] Specifically, when the target battery cell is charged and discharged, the charging and discharging mode can be adjusted according to demand, and the test current of the target battery cell when it is charged and discharged in each candidate mode can be obtained through the current sensor.

[0024] Optionally, the number of target cells may be multiple. When there are multiple target cells, the test current of each target cell in each candidate mode may be acquired through a current sensor corresponding to each target cell.

[0025] S102, selecting a target test channel from candidate test channels according to a test current value of the test current.

[0026] There are many types of candidate test channels, and each candidate channel can test currents of different magnitudes.

[0027] Specifically, a relationship mapping table between the test current value and each candidate test channel can be created in advance. After the test current value of the target battery cell when charging and discharging in each candidate mode is obtained, the target test channel corresponding to the test current value can be determined by looking up the table, and then charging and discharging detection can be performed based on the target test channel.

[0028] Optionally, the method for determining the target test channel from the candidate test channels may also be: if the test current value is less than or equal to the first current threshold, the first test channel is determined to be the target test channel; if the test current value is greater than the first current threshold and less than or equal to the second current threshold, the second test channel is determined to be the target test channel; if the test current value is greater than the second current threshold, the third test channel is determined to be the target test channel.

[0029] Among them, the first test channel is a single channel; the second test channel is a channel in which two single channels are connected in parallel; and the third test channel is a channel in which four single channels are connected in parallel.

[0030] For example, Figure 2 As shown, the candidate test channel can be a test channel composed of four channels. When the test current value is less than or equal to 150A, one of the channels is enabled as the target test channel; when the test current value is greater than 150A but less than or equal to 300A, two of the channels are enabled and connected in parallel as the target test channel; when the test current is greater than 300A, four channels are enabled and connected in parallel as the target test channel. It should be noted that the test current value is usually less than 600A, so a test channel composed of four channels can basically handle most situations. If the test current value is greater than 600A, the candidate test channel can be replaced with a test channel composed of more channels, so that more channels can be connected in parallel to become the target test channel, and charge and discharge detection can be performed on test current values ​​with larger current values.

[0031] S103, performing charge and discharge detection on the target battery cell based on the target measurement channel.

[0032] Specifically, after selecting the target test channel, the charger and discharger can charge and discharge the target battery cell based on the target channel. At this time, the charger and discharger can adjust the charging and discharging mode according to demand. At this time, the various data of the target battery cell can be obtained in real time through the sensor, and then the target battery cell can be detected according to the various data of the target battery cell. It should be noted that the various data may include the charging and discharging current, charging and discharging voltage, charging and discharging power, temperature and other data of the target battery cell.

[0033] For example, Figure 3 As shown, a test system structure diagram for performing charge and discharge tests on a target battery cell is provided. Figure 3 CELL1-N in the figure corresponds to n target cells. The charger-discharger 1-N can charge and discharge N target cells through two AC control boards connected in series. The combiner cabinet can combine the currents generated by the N target cells when the target cells are discharged into one current, which is then transformed by a transformer to supply power to external devices, such as cars, drones and other equipment.

[0034] The battery cell charge and discharge detection method in the above embodiment first obtains the test current of the target battery cell when it is charged and discharged in each candidate mode; the candidate modes include at least constant current mode, constant power mode, constant resistance mode, constant current constant voltage mode, constant power constant voltage mode and standby mode; then, according to the test current value of the test current, the target test channel is selected from the candidate test channels; finally, based on the target test channel, the target battery cell is charged and discharged. The charge and discharge detection method in this scheme distinguishes the candidate modes in which the target battery cell is located, and also selects the appropriate test channel according to the test current. Therefore, when performing battery cell charge and discharge detection in this scheme, the detection process is more refined and rigorous, thereby increasing the accuracy of battery cell charge and discharge detection.

[0035] In another embodiment, Figure 4 As shown in the figure, the specific process of charging and discharging detection of the target battery cell is described in detail, and the specific method includes: S401, based on the target test channel, obtaining test data of the target battery cell in each candidate mode.

[0036] The test data is the data required for performing a charge and discharge test on the target battery cell. For example, the test data may be voltage data, current data, power data, and temperature data.

[0037] Specifically, the voltage data of the target battery cell in each candidate mode uploaded by the voltage sensor can be obtained; the current data of the target battery cell in each candidate mode uploaded by the current sensor can be obtained; the power data of the target battery cell in each candidate mode uploaded by the power sensor can be obtained; and the temperature data of the target battery cell in each candidate mode uploaded by the temperature sensor can be obtained.

[0038] S402, obtaining standard data of the target battery cell under each candidate mode; The standard data refers to various data of the target battery cell under normal working conditions. The standard data may be a range, for example, the standard data may be standard voltage, standard current, standard power, standard temperature, etc.

[0039] Specifically, the standard data of the target battery cell under each candidate mode is usually manually uploaded to the storage system of the computer. Based on the model of the target battery cell, the model of the target battery cell can be used as a keyword to search and obtain the standard data of the target battery cell under each candidate mode in the storage system of the computer.

[0040] S403, determining the operating condition of the target battery cell under the charge and discharge state according to the test data and the standard data.

[0041] Specifically, a numerical comparison is performed between the test data and the standard data. If the test data does not conform to the standard data in any candidate mode, it is determined that the target battery cell is in an abnormal operating condition.

[0042] For example, if under a certain operating condition, the test current of the target battery cell is 100A, the test voltage is 500V, the test power is 50KW, and the test temperature is 98°C, the standard current at this time is 50-150A, the standard voltage is 400-600V, the standard power is 20-90KW, and the standard temperature is below 90°C, then the test temperature in this candidate mode is not in the standard temperature range, which proves that the target battery cell is in an abnormal operating condition at this time.

[0043] In the above embodiment, the test data of the target battery cell in each candidate mode is first obtained based on the target test channel; then the standard data of the target battery cell in each candidate mode is obtained; finally, the working condition of the target battery cell in the charging and discharging state is determined based on the test data and the standard data. The working condition of the target battery cell is determined by comparing the test data with the standard data, thereby increasing the accuracy of determining the working condition of the target battery cell.

[0044] In another embodiment, Figure 5 As shown in FIG. 1 , a method for handling when the target battery cell is determined to be in an abnormal operating condition is described in detail, and the specific method includes: S501: If the target battery cell is in an abnormal operating condition, determine the type of the abnormal operating condition based on the test data and the standard data.

[0045] Exemplarily, if the test voltage in the test data is not within the range of the standard voltage in the standard data, then the abnormal operating condition type of the target battery cell is determined to be voltage abnormality; if the test current in the test data is not within the range of the standard current in the standard data, then the abnormal operating condition type of the target battery cell is determined to be current abnormality; if the test power in the test data is not within the range of the standard power in the standard data, then the abnormal operating condition type of the target battery cell is determined to be power abnormality; if the test temperature in the test data is not within the range of the standard temperature in the standard data, then the abnormal operating condition type of the target battery cell is determined to be overtemperature.

[0046] S502: Send an abnormal operating condition protection instruction according to the abnormal operating condition type.

[0047] Specifically, if the abnormal operating condition type of the target battery cell is voltage abnormality, a voltage abnormality protection instruction is sent; if the abnormal operating condition type of the target battery cell is current abnormality, a current abnormality protection instruction is sent; if the abnormal operating condition type of the target battery cell is power abnormality, a power abnormality protection instruction is sent; if the abnormal operating condition type of the target battery cell is temperature abnormality, a temperature abnormality protection instruction is sent.

[0048] For example, when the test voltage of the target battery cell exceeds the standard voltage, an overvoltage protection instruction can be sent to reduce the voltage of the target battery cell during charging and discharging, thereby protecting the entire charging and discharging system; when the test temperature of the target battery cell exceeds the standard temperature, a high temperature protection instruction can be sent to start the cooling system to reduce the temperature of the target battery cell during charging and discharging, thereby protecting the entire charging and discharging system.

[0049] In the above embodiment, when the target battery cell is in an abnormal condition, the type of abnormal condition is first determined based on the test data and the standard data, and then an abnormal condition protection instruction is sent based on the type of abnormal condition, thereby protecting the entire charging and discharging system and increasing the life and stability of the charging and discharging system and the target battery cell.

[0050] In order to more comprehensively demonstrate the present solution, this embodiment provides an optional method for detecting the charge and discharge of a battery cell, such as Figure 6 As shown: S601, obtaining a test current of a target battery cell when it is charged and discharged in each candidate mode.

[0051] The candidate modes include at least a constant current mode, a constant power mode, a constant resistance mode, a constant current constant voltage mode, a constant power constant voltage mode and a standby mode.

[0052] S602: Select a target test channel from candidate test channels according to a test current value of the test current.

[0053] Specifically, if the test current value is less than or equal to the first current threshold, the first test channel is determined to be the target test channel; if the test current value is greater than the first current threshold and less than or equal to the second current threshold, the second test channel is determined to be the target test channel; if the test current value is greater than the second current threshold, the third test channel is determined to be the target test channel.

[0054] Among them, the first test channel is a single channel; the second test channel is a channel in which two single channels are connected in parallel; and the third test channel is a channel in which four single channels are connected in parallel.

[0055] S603, based on the target test channel, obtaining test data of the target battery cell in each candidate mode.

[0056] S604, obtaining standard data of the target battery cell in each candidate mode; S605: If the test data does not meet the standard data in any candidate mode, it is determined that the target battery cell is in an abnormal operating condition.

[0057] S606: If the target battery cell is in an abnormal operating condition, determine the type of the abnormal operating condition based on the test data and the standard data.

[0058] S607: Send an abnormal operating condition protection instruction according to the abnormal operating condition type.

[0059] The specific process of the above S601-S607 can refer to the description of the above method embodiment, and its implementation principle and technical effect are similar, which will not be repeated here.

[0060] Based on the same inventive concept, the embodiment of the present application also provides a battery cell charge and discharge detection device for implementing the battery cell charge and discharge detection method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more battery cell charge and discharge detection device embodiments provided below can refer to the limitations of the battery cell charge and discharge detection method above, and will not be repeated here.

[0061] In one embodiment, Figure 7 As shown, a battery cell charge and discharge detection device is provided, the device comprising: The current acquisition module 70 is used to obtain the test current of the target battery cell when it is charged and discharged in each candidate mode; the candidate modes include at least a constant current mode, a constant power mode, a constant resistance mode, a constant current constant voltage mode, a constant power constant voltage mode and a standby mode; A channel selection module 71, for selecting a target test channel from candidate test channels according to a test current value of the test current; The battery cell detection module 72 is used to perform charge and discharge detection on the target battery cell based on the target measurement channel.

[0062] In another embodiment, the above Figure 7 The channel selection module 71 in is specifically used for: If the test current value is less than or equal to the first current threshold, the first test channel is determined to be the target test channel; if the test current value is greater than the first current threshold and less than or equal to the second current threshold, the second test channel is determined to be the target test channel; if the test current value is greater than the second current threshold, the third test channel is determined to be the target test channel.

[0063] Among them, the first test channel is a single channel; the second test channel is a channel in which two single channels are connected in parallel; and the third test channel is a channel in which four single channels are connected in parallel.

[0064] In another embodiment, Figure 8 As shown above Figure 7 The cell detection module 72 includes: A first acquisition unit 721 is used to acquire test data of a target cell in each candidate mode based on a target test channel; A second acquisition unit 722 is used to acquire standard data of the target battery cell in each candidate mode; The operating condition determination unit 723 is used to determine the operating condition of the target battery cell under the charging and discharging state according to the test data and the standard data.

[0065] In another embodiment, the above Figure 8 The working condition determination unit 723 in the embodiment is specifically used for: If the test data does not meet the standard data in any candidate mode, it is determined that the target battery cell is in an abnormal operating condition.

[0066] In another embodiment, Fig. 9 As shown above Figure 7 The battery cell charge and discharge detection device further comprises: A type determination module 73, for determining the type of abnormal operating condition according to the test data and the standard data if the target battery cell is in an abnormal operating condition; The instruction sending module 74 is used to send an abnormal operating condition protection instruction according to the type of abnormal operating condition.

[0067] The present application also provides an electronic device, in some implementations, referring to Fig.10As shown, the electronic device 700 includes an input unit 710, a memory 720, a processor 730, and an output unit 740. The memory 720 stores program instructions that can be run on the processor 730, and the processor 730 calls the program instructions to execute the battery cell charge and discharge detection method and / or technical solution based on the aforementioned embodiment. The electronic device 700 can be a mobile terminal device such as a mobile phone or a computer.

[0068] In addition, an embodiment of the present application further provides a computer-readable storage medium for storing a computer program for executing a battery cell charge and discharge detection method. For example, a computer program instruction, when executed by a computer, can call or provide a method and / or technical solution according to the present application through the operation of the computer. The program instructions for calling the method of the present application may be stored in a fixed or removable storage medium, and / or transmitted through a data stream in a broadcast or other signal-bearing medium and / or stored in a storage medium that runs according to the program instructions.

[0069] Obviously, those skilled in the art should understand that the above modules or steps of the present application can be implemented by a general computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, and optionally, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. In this way, the present application is not limited to any specific combination of hardware and software.

[0070] The technical features of the above embodiments may be arbitrarily integrated. To make the description concise, not all possible integrations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the integration of these technical features, they should be considered to be within the scope of this specification.

[0071] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A method for detecting battery charge and discharge, characterized in that: The method comprises: Obtaining a test current when the target battery cell is charged and discharged in each candidate mode; the candidate modes include at least a constant current mode, a constant power mode, a constant resistance mode, a constant current constant voltage mode, a constant power constant voltage mode and a standby mode; selecting a target test channel from candidate test channels according to a test current value of the test current; Based on the target measurement channel, charge and discharge detection is performed on the target battery cell.

2. The battery cell charge and discharge detection method according to claim 1, characterized in that: Selecting a target test channel from candidate test channels according to a test current value of the test current includes: If the test current value is less than or equal to the first current threshold, determining the first test channel as the target test channel; If the test current value is greater than the first current threshold and less than or equal to the second current threshold, the second test channel is determined to be the target test channel; If the test current value is greater than the second current threshold, the third test channel is determined to be the target test channel.

3. The battery cell charge and discharge detection method according to claim 2, characterized in that: The first test channel is a single channel; the second test channel is a channel in which two single channels are connected in parallel; and the third test channel is a channel in which four single channels are connected in parallel.

4. The battery cell charge and discharge detection method according to claim 1, characterized in that: Based on the target measurement channel, charging and discharging detection is performed on the target battery cell, including: Based on the target test channel, acquiring test data of the target battery cell in each candidate mode; Acquire standard data of the target battery cell under each candidate mode; The operating condition of the target battery cell under the charge and discharge state is determined according to the test data and the standard data.

5. The battery cell charge and discharge detection method according to claim 4, characterized in that: Determining the operating condition of the target battery cell under the charge and discharge state according to the test data and the standard data includes: If the test data does not meet the standard data in any candidate mode, it is determined that the target battery cell is in an abnormal operating condition.

6. The battery cell charge and discharge detection method according to claim 5, characterized in that: The method further comprises: If the target battery cell is in an abnormal operating condition, determining the type of the abnormal operating condition according to the test data and the standard data; According to the abnormal operating condition type, an abnormal operating condition protection instruction is sent.

7. A battery cell charge and discharge detection device, characterized in that: The device comprises: A current acquisition module, used to acquire a test current when the target battery cell is charged and discharged in each candidate mode; the candidate modes include at least a constant current mode, a constant power mode, a constant resistance mode, a constant current constant voltage mode, a constant power constant voltage mode and a standby mode; A channel selection module, used for selecting a target test channel from candidate test channels according to a test current value of the test current; A battery cell detection module is used to perform charge and discharge detection on the target battery cell based on the target measurement channel.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the battery cell charge and discharge detection method according to any one of claims 1 to 6 is implemented.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the battery cell charge and discharge detection method according to any one of claims 1 to 6 is implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the battery cell charge and discharge detection method according to any one of claims 1 to 6 is implemented.

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