Battery cell synchronous linkage test method and device, electronic equipment and storage medium

Abstract

The application provides a kind of battery synchronization linkage test method, device, electronic equipment and storage medium, it is related to battery detection technical field, the method comprises: according to the test requirement information of each test channel of battery test system creates multiple-channel linkage group;Test process of multiple-channel linkage group is set, and pause identification is set for each test process;Execute test process, member channel in multiple-channel linkage group synchronously starts each test process, if there is pause identification triggered by a member channel, pause the current test process of all member channels;If all member channels are paused, all member channels continue to execute the next test process until the test is completed, and the test result is obtained.The application can realize multiple batteries simultaneously with the same process linkage test, significantly shorten the completion time of the overall task, can discover and handle abnormal conditions in time, while reducing system failure rate, accumulate multiple test cases, adapt to different application scenarios.

Description

Technical Field

[0001] This invention relates to the field of battery cell testing technology, specifically to a method, apparatus, electronic device, and storage medium for synchronous linkage testing of battery cells. Background Technology

[0002] Rigorous testing of battery cells before they leave the factory is crucial, as it not only affects battery performance but also directly impacts their safety, reliability, and lifespan. Cell testing systems are primarily used to evaluate and optimize battery cell performance by precisely controlling current and voltage to perform charge and discharge tests. This system can monitor parameters such as voltage, current, and temperature of the cells in real time and assess their performance and health status based on this data.

[0003] Currently, mainstream battery cell testing systems on the market perform charge-discharge tests on cells using single-channel or multi-channel parallel connections. Single-channel testing can only test one cell at a time, with the testing process being independent, suitable for small-scale or specific testing needs. Multi-channel testing improves testing efficiency by testing multiple cells simultaneously through multiple independent control channels, but the testing processes of each cell remain independent, making it impossible to achieve complex synchronous and coordinated testing. In certain specific application scenarios, such as the performance evaluation of battery packs or battery modules, where it is necessary to simulate the interaction and collaborative work between cells, existing battery cell testing systems cannot meet the requirements for synchronous and coordinated testing of multiple test objects. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a method, device, electronic device and storage medium for synchronous linkage testing of battery cells, which effectively solves the problem that the existing battery cell testing system cannot meet the synchronous linkage testing of multiple test objects.

[0005] In a first aspect, the present invention provides a method for synchronous linkage testing of battery cells, the method being applied to a battery cell testing system, the battery cell testing system including multiple test channels, each test channel being connected to a battery cell, the method comprising:

[0006] Create a multi-channel linkage group based on the test requirements information of each test channel of the battery cell testing system;

[0007] Set the test steps for the multi-channel linkage group, and set pause recognition for each test step;

[0008] When the test steps are executed, each test step in the member channels of the multi-channel linkage group is started synchronously. If a member channel triggers the pause recognition, the current test steps of all member channels are paused.

[0009] If all member channels are paused, all member channels will be started synchronously to continue executing the next test step until the test ends and the test results are obtained.

[0010] Furthermore, the method also includes:

[0011] Set a synchronization safety protection threshold for each of the test steps. If a member channel triggers the synchronization safety protection threshold, then pause the test of the multi-channel linkage group and troubleshoot the fault.

[0012] Furthermore, the step of creating a multi-channel linkage group based on the test requirement information of each test channel of the cell testing system includes:

[0013] Obtain the test requirement information for each of the test channels, and divide the multiple test channels that need to be tested in conjunction with each other according to the test requirement information to obtain at least one linkage group;

[0014] Set the group name for the linkage group, and each group name shall be different;

[0015] Adjust the multiple test channels in the linkage group, set a unique identifier for each test channel, and obtain the multi-channel linkage group.

[0016] Furthermore, the test steps for setting up the multi-channel linkage group include:

[0017] The test step states of the multi-channel linkage group are set, and the test step states include at least charging, discharging, pause and shelving states;

[0018] The test steps of the multi-channel linkage group are obtained by setting the state transition logic and state parameters according to the test step state.

[0019] Furthermore, setting a pause recognition for each of the test steps includes:

[0020] The pause recognition is triggered after each of the aforementioned test steps is completed;

[0021] Set a cutoff condition for each test step, and trigger the pause recognition when the cutoff condition is met.

[0022] Furthermore, the synchronous safety protection threshold includes at least the cell voltage threshold, the cell temperature threshold, and the test current threshold.

[0023] Secondly, the present invention provides a battery cell synchronous linkage testing device, the device being applied to a battery cell testing system, the battery cell testing system including multiple testing channels, each of the testing channels being connected to a battery cell, the device comprising:

[0024] The group creation module is used to create multi-channel linkage groups based on the test requirements information of each test channel of the battery cell testing system.

[0025] The step setting module is used to set the test steps of the multi-channel linkage group and set a pause recognition for each test step;

[0026] The synchronous waiting module is used to execute the test steps. In the multi-channel linkage group, each member channel starts the test steps synchronously. If a member channel triggers the pause recognition, the current test steps of all member channels are paused.

[0027] The test execution module is used to synchronously start all the member channels and continue to execute the next test step until the test ends, if all the member channels are paused, and obtain the test results.

[0028] Furthermore, the device also includes:

[0029] The synchronization protection module is used to set the synchronization safety protection threshold for each test step. If a member channel triggers the synchronization safety protection threshold, the test of the multi-channel linkage group is suspended for troubleshooting.

[0030] Thirdly, the present invention provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the cell synchronization and linkage testing method as described in the first aspect of the present invention.

[0031] Fourthly, the present invention provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the cell synchronization and linkage testing method as described in the first aspect of the present invention.

[0032] The present invention provides a method, apparatus, electronic device, and storage medium for synchronous linkage testing of battery cells. This allows for simultaneous, synchronized testing of multiple battery cells without physical series connection, effectively isolating problematic cells from other cells during testing. Furthermore, by processing multiple channels in parallel, the overall task completion time is significantly shortened. Status bit recognition enables the battery cell testing system to accurately monitor the status and progress of each test channel, allowing for timely detection and handling of anomalies and reducing system failure rates. The number of channels and grouping methods can be flexibly configured according to actual needs, allowing for the replacement of individual or multiple cells to execute different test schemes, accumulating various test cases to adapt to different application scenarios. Attached Figure Description

[0033] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a first flowchart of the battery cell synchronous linkage test method provided in the embodiment of the present invention;

[0035] Figure 2 This is the second flowchart of the cell synchronization and linkage testing method provided in the embodiment of the present invention;

[0036] Figure 3 This is the third flowchart of the battery cell synchronous linkage test method provided in the embodiment of the present invention;

[0037] Figure 4 This is the fourth flowchart of the battery cell synchronous linkage test method provided in the embodiments of the present invention;

[0038] Figure 5 This is the fifth flowchart of the battery cell synchronous linkage test method provided in the embodiment of the present invention;

[0039] Figure 6 This is a first schematic diagram of the structure of the battery cell synchronous linkage testing device provided in an embodiment of the present invention;

[0040] Figure 7 This is a second schematic diagram of the structure of the battery cell synchronous linkage testing device provided in an embodiment of the present invention;

[0041] Figure 8 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention.

[0042] Explanation of key component symbols:

[0043] 600. Cell Synchronous Linkage Testing Device; 610. Group Creation Module; 620. Process Step Setting Module; 630. Synchronous Waiting Module; 640. Synchronous Protection Module; 650. Test Execution Module; 800. Electronic Equipment; 810. Processor; 820. Communication Interface; 830. Memory; 840. Communication Bus. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be further described clearly and completely below with reference to the accompanying drawings of the embodiments of this invention. It should be noted that the described embodiments are merely some embodiments of this invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0047] Currently, mainstream battery cell testing systems on the market perform charge-discharge tests on cells using single-channel or multi-channel parallel connections. Single-channel testing can only test one cell at a time, with the testing process being independent, suitable for small-scale or specific testing needs. Multi-channel testing improves testing efficiency by testing multiple cells simultaneously through multiple independent control channels, but the testing processes of each cell remain independent, making it impossible to achieve complex synchronous and coordinated testing. In certain specific application scenarios, such as the performance evaluation of battery packs or battery modules, where it is necessary to simulate the interaction and collaborative work between cells, existing battery cell testing systems cannot meet the requirements for synchronous and coordinated testing of multiple test objects.

[0048] Example 1

[0049] This invention provides a method for synchronous and coordinated testing of battery cells, effectively solving the problem that existing battery cell testing systems cannot meet the requirements for synchronous and coordinated testing of multiple test objects. The method provided by this invention is applied to a battery cell testing system, which may include, but is not limited to, a charge / discharge machine or other battery cell testing systems. The battery cell testing system includes multiple test channels, each connected to a battery cell. Figure 1 This is a first flowchart of the cell synchronization and linkage testing method provided in the embodiments of the present invention, as follows: Figure 1 As shown, the method includes the following steps:

[0050] S100. Create a multi-channel linkage group based on the test requirements information of each test channel of the cell test system.

[0051] Figure 2 This is the second flowchart of the cell synchronization and linkage testing method provided in the embodiment of the present invention, as shown below. Figure 2 As shown, the creation of a multi-channel linkage group includes the following steps:

[0052] S110. Obtain the test requirement information for each test channel, and divide the multiple test channels that need to be tested in conjunction with each other according to the test requirement information to obtain at least one linkage group.

[0053] In a battery cell testing system, the testing requirements for each test channel are typically based on multiple aspects, including the cell's safety performance, environmental adaptability, and physical durability. Based on these requirements, multiple test channels requiring coordinated testing can be divided into one or more coordinated groups. For example, multiple test channels requiring safety performance testing can be grouped into one coordinated group to comprehensively evaluate the cell's safety performance under extreme conditions such as short circuits, internal short circuits, heavy object impacts, and drops. Test channels within this coordinated group will perform the same test steps, while test channels outside the group will maintain an independent testing mode.

[0054] S120. Set the group name for the linkage group. Each group name should be different.

[0055] In this embodiment of the invention, in order to ensure the uniqueness of the group name of the linkage group, when setting the group name of a certain linkage group, the group names of other linkage groups are read and compared at the same time. If the same group name is found, a prompt is given to avoid the duplication of group names.

[0056] Optionally, operations such as adding, deleting, querying, and modifying can be performed on each linkage group as a whole. For example, when setting up the overall group, the tester sets up 4 overall groups, but during the test, due to changes in requirements, only 2 linkage groups are needed. In this case, 2 linkage groups can be deleted.

[0057] S130. Adjust the multiple test channels in the linkage group, set a unique identifier for each test channel, and obtain a multi-channel linkage group.

[0058] The content of multiple test channels within the linkage group can be adjusted according to actual testing needs. For example, test channels can be added or deleted, and the test channels within the linkage group can be sorted. Each test channel in the linkage group needs to be assigned a unique identifier for differentiation within the group.

[0059] By rationally dividing and linking the various test channels of the battery cell testing system according to the test requirements, not only can the testing efficiency be improved, but also the performance of the battery cell in all aspects can be comprehensively evaluated.

[0060] S200, set up the test steps for multi-channel linkage groups, and set pause recognition for each test step.

[0061] Figure 3 This is the third flowchart of the cell synchronization and linkage testing method provided in the embodiments of the present invention, as shown below. Figure 3 As shown, the test steps for setting up a multi-channel linkage group include the following:

[0062] S210. Set the test step status of the multi-channel linkage group. The test step status includes at least charging, discharging, pause and shelving status.

[0063] In this embodiment of the invention, a state machine is designed for each multi-channel linkage group to set the test step states and control the state transitions of the test channels within the group. The state machine should include all possible test step states, including but not limited to charging, discharging, paused, and shelved states.

[0064] S220. Set the state transition logic and state parameters according to the test step status to obtain the test steps of the multi-channel linkage group.

[0065] Each test step is configured with specific state transition logic and state parameters, including but not limited to charging current and discharging voltage. These state parameters are ensured to be correctly applied to all test channels within the multi-channel linkage group. The multi-channel linkage grouping introduces the identification of state bits for each test channel in the group to achieve linkage. State bit identification identifies states such as charging, discharging, paused, and suspended within the test step. The state bit is the coupling between the test step state and the specific state parameters.

[0066] Figure 4 This is the fourth flowchart of the cell synchronization and linkage testing method provided in the embodiments of the present invention, as shown below. Figure 4 As shown, setting a pause recognition for each test step includes the following steps:

[0067] S230, Set to trigger pause recognition after each test step is completed.

[0068] The channels within a multi-channel linkage group can simultaneously initiate any test step for cell testing. Upon completion of any test step, a pause recognition mechanism is set to achieve multi-channel synchronous waiting functionality. This synchronous waiting function references a pause command in the cell testing system, while simultaneously overlaying the recognition of the status bits of each test channel within the multi-channel linkage group, thereby enabling the synchronous initiation of any test step.

[0069] S240. Set the cutoff condition for each test step. When the cutoff condition is met, trigger a pause in recognition.

[0070] Optionally, cutoff conditions can be set for each test step, including but not limited to cell voltage, cell capacity, test current, and test time. When any test channel in the multi-channel linkage group reaches the cutoff condition of any step, a pause identification mechanism is triggered, the test channel pauses testing, and the cell testing system simultaneously sends a pause identification command to other test channels in the multi-channel linkage group. Each test channel receives the pause identification command and pauses testing synchronously.

[0071] S300: Execute the test steps. In the multi-channel linkage group, each member channel starts the test steps synchronously. If a member channel triggers a pause recognition, the current test steps of all member channels are paused.

[0072] In this embodiment of the invention, a command is sent to the cell testing system to execute test steps. Member channels in the multi-channel linkage group start synchronously and begin executing each test step sequentially. During the execution of a test step, if a member channel triggers the pause recognition for the current test step, all member channels are paused from executing the current test step. Through software and hardware coordination, the time taken from the pause of the first test channel to the pause of all test channels in the multi-channel linkage group does not exceed 1 second. Specifically, the software design at the underlying code level needs to consider the delay in the cell testing system's identification of test channels and the issuance of commands, while the hardware design ensures that the signal connection lines between the device control computer and the intermediate unit are kept within a reasonable length.

[0073] S500: If all member channels are paused, all member channels will be started synchronously to continue executing the next test step until the test ends and the test results are obtained.

[0074] Optionally, when all member channels in the multi-channel linkage group enter the pause test, a command is sent to the cell testing system, and all member channels synchronously start to continue executing the next test step. At the same time, through the cooperation of the software and hardware, it is ensured that all member channels enter the next test step within 1 second. Steps S300 and S500 are repeated until the test ends and the test results are obtained.

[0075] As a preferred embodiment of the present invention Figure 5 This is the fifth flowchart of the cell synchronization and linkage testing method provided in the embodiments of the present invention, as shown below. Figure 5 As shown, the method also includes the following steps:

[0076] S400: Set the synchronization safety protection threshold for each test step. If a member channel triggers the synchronization safety protection threshold, pause the test of the multi-channel linkage group and troubleshoot the fault.

[0077] To ensure the safety of simultaneous testing of multiple battery cells, a synchronization safety protection threshold is set for each test step. This threshold includes, but is not limited to, cell voltage threshold, cell temperature threshold, and test current threshold. When any member channel in the multi-channel linkage group triggers the synchronization safety protection threshold, causing the test to stop, the cell testing system automatically sends a stop test command to the other member channels in the multi-channel linkage group, causing all member channels in the group to stop testing synchronously. After the protection fault is cleared, all member channels are restarted to continue testing, ensuring that all member channels continue testing under the same test step.

[0078] Optionally, member channels within a multi-channel linkage group cannot be reset during testing to ensure that the processes of each member channel are consistent, thereby preventing testing asynchrony issues caused by inconsistent processes.

[0079] The battery cell synchronous linkage testing method provided in this invention can realize the simultaneous linkage testing of multiple battery cells in the same step. When testing multiple battery cells, there is no need for physical series connection, which can effectively isolate the influence of problematic battery cells on other battery cells under testing. Furthermore, by processing multiple channels in parallel, the overall task completion time can be significantly shortened. Status bit recognition enables the battery cell testing system to accurately grasp the status and progress of each test channel, allowing for timely detection and handling of anomalies and reducing the system failure rate.

[0080] Example 2

[0081] Based on the same technical concept as the method embodiment in Example 1 above, this embodiment of the invention provides a battery cell synchronous linkage testing device. Figure 6 This is a first schematic diagram of the structure of the battery cell synchronous linkage testing device provided in an embodiment of the present invention, as shown below. Figure 6 As shown, the cell synchronous linkage testing device 600 includes:

[0082] The group creation module 610 is used to create multi-channel linkage groups based on the test requirements of each test channel of the battery cell testing system.

[0083] The step setting module 620 is used to set the test steps of the multi-channel linkage group and set the pause recognition for each test step.

[0084] The synchronous waiting module 630 is used to execute test steps. In the multi-channel linkage group, each member channel starts each test step synchronously. If a member channel triggers pause recognition, the current test steps of all member channels are paused.

[0085] The test execution module 650 is used to synchronously start all member channels and continue to execute the next test step until the test ends, if all member channels are paused, and obtain the test results.

[0086] As a preferred embodiment of the present invention Figure 7 This is a second schematic diagram of the battery cell synchronous linkage testing device provided in an embodiment of the present invention, as shown below. Figure 7 As shown, the cell synchronous linkage testing device 600 also includes:

[0087] The synchronization protection module 640 is used to set the synchronization safety protection threshold for each test step. If a member channel triggers the synchronization safety protection threshold, the test of the multi-channel linkage group is suspended for troubleshooting.

[0088] The battery cell synchronous linkage testing device provided in this embodiment of the invention can flexibly configure the number of channels and grouping methods according to actual needs, and can flexibly replace single or multiple battery cells to execute different test schemes, accumulate multiple test cases, and thus adapt to different application scenarios.

[0089] It is understood that the implementation method of the cell synchronous linkage test method described in Embodiment 1 above is also applicable to this embodiment and can achieve the same technical effect, so it will not be described again here.

[0090] Example 3

[0091] Based on the same concept, embodiments of the present invention also provide an electronic device. Figure 8 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention, such as... Figure 8 As shown, the electronic device 800 may include: a processor 810, a communication interface 820, a memory 830, and a communication bus 840, wherein the processor 810, the communication interface 820, and the memory 830 communicate with each other through the communication bus 840. The processor 810 can call logical instructions in the memory 830 to execute the steps of the cell synchronization and linkage testing method described in the above embodiments. For example, it includes:

[0092] S100. Create a multi-channel linkage group based on the test requirements information of each test channel of the battery cell testing system;

[0093] S200, set up the test steps for multi-channel linkage groups, and set pause recognition for each test step;

[0094] S300, Execute the test steps. In the multi-channel linkage group, each member channel starts the test steps synchronously. If a member channel triggers a pause recognition, the current test steps of all member channels are paused.

[0095] S400. If all member channels are paused, all member channels will be started synchronously to continue executing the next test step until the test ends and the test results are obtained.

[0096] The processor 810 can be a central processing unit (CPU). The processor can also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or combinations thereof.

[0097] Furthermore, the logical instructions in the aforementioned memory 830 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, essentially, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0098] The memory 830 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created by the processor, etc. Furthermore, the memory may include high-speed random access memory and non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some embodiments, the memory may optionally include memory remotely located relative to the processor, which can be connected to the processor via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0099] Example 4

[0100] Based on the same concept, embodiments of the present invention also provide a computer-readable storage medium storing a computer program containing at least one piece of code executable by a master control device to control the master control device to implement the steps of the cell synchronous linkage testing method described in the above embodiments. For example, it includes:

[0101] S100. Create a multi-channel linkage group based on the test requirements information of each test channel of the battery cell testing system;

[0102] S200, set up the test steps for multi-channel linkage groups, and set pause recognition for each test step;

[0103] S300, Execute the test steps. In the multi-channel linkage group, each member channel starts the test steps synchronously. If a member channel triggers a pause recognition, the current test steps of all member channels are paused.

[0104] S400. If all member channels are paused, all member channels will be started synchronously to continue executing the next test step until the test ends and the test results are obtained.

[0105] Based on the same technical concept, this embodiment of the invention also provides a computer program, which, when executed by a master control device, is used to implement the above-described method embodiments.

[0106] The computer program may be stored, in whole or in part, on a computer-readable storage medium packaged with the processor, or in part or in whole on a memory not packaged with the processor.

[0107] Based on the same technical concept, embodiments of the present invention also provide a processor for implementing the above-described method embodiments. The processor may be a chip.

[0108] In summary, the cell synchronous linkage testing method, apparatus, electronic device, and storage medium provided by this invention can achieve simultaneous linkage testing of multiple cells in the same step. When testing multiple cells, physical series connection is not required, effectively isolating the influence of problematic cells on other cells under test. Furthermore, by processing multiple channels in parallel, the overall task completion time can be significantly shortened. Status bit recognition allows the cell testing system to accurately grasp the status and progress of each test channel, enabling timely detection and handling of anomalies and reducing system failure rate. The number of channels and grouping methods can be flexibly configured according to actual needs, allowing for the flexible replacement of single or multiple cells to execute different test schemes, accumulating multiple test cases to adapt to different application scenarios.

[0109] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0110] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

[0111] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for synchronous linkage testing of battery cells, characterized in that, The method is applied to a battery cell testing system, the battery cell testing system including multiple test channels, each test channel being connected to a battery cell, the method comprising: Create a multi-channel linkage group based on the test requirements information of each test channel of the battery cell testing system; Set the test steps for the multi-channel linkage group, and set pause recognition for each test step; When the test steps are executed, each test step in the member channels of the multi-channel linkage group is started synchronously. If a member channel triggers the pause recognition, the current test steps of all member channels are paused. If all member channels are paused, all member channels will be started synchronously to continue executing the next test step until the test ends and the test results are obtained. The test steps for setting up the multi-channel linkage group, and setting a pause recognition for each test step, include: The test step states of the multi-channel linkage group are set by a state machine, and the test step states include at least charging, discharging, pausing and shelving states. Based on the test step state, set state transition logic and state parameters to obtain state bits. The state bits are the coupling between the test step state and the state parameters. Identify the state bits to obtain the test steps of the multi-channel linkage group. The pause recognition is triggered after each of the aforementioned test steps is completed; Set a cutoff condition for each test step, and trigger the pause recognition when the cutoff condition is met.

2. The cell synchronous linkage test method according to claim 1, characterized in that, The method further includes: Set a synchronization safety protection threshold for each of the test steps. If a member channel triggers the synchronization safety protection threshold, then pause the test of the multi-channel linkage group and troubleshoot the fault.

3. The cell synchronous linkage test method according to claim 1, characterized in that, The step of creating a multi-channel linkage group based on the test requirements information of each test channel of the cell testing system includes: Obtain the test requirement information for each of the test channels, and divide the multiple test channels that need to be tested in conjunction with each other according to the test requirement information to obtain at least one linkage group; Set the group name for the linkage group, and each group name shall be different; Adjust the multiple test channels in the linkage group, set unique identifiers for the multiple test channels, and obtain the multi-channel linkage group.

4. The cell synchronous linkage test method according to claim 2, characterized in that, The synchronous safety protection thresholds include at least the cell voltage threshold, the cell temperature threshold, and the test current threshold.

5. A cell synchronous linkage testing device, characterized in that, The device is applied to a battery cell testing system, which includes multiple testing channels, each of which is connected to a battery cell. The device includes: The group creation module is used to create multi-channel linkage groups based on the test requirements information of each test channel of the battery cell testing system. The step setting module is used to set the test steps of the multi-channel linkage group and set a pause recognition for each test step; The synchronous waiting module is used to execute the test steps. In the multi-channel linkage group, each member channel starts the test steps synchronously. If a member channel triggers the pause recognition, the current test steps of all member channels are paused. The test execution module is used to synchronously start all the member channels and continue to execute the next test step until the test ends, if all the member channels are paused, and obtain the test results. The test steps for setting up the multi-channel linkage group, and setting a pause recognition for each test step, include: The test step states of the multi-channel linkage group are set by a state machine, and the test step states include at least charging, discharging, pausing and shelving states. Based on the test step state, set state transition logic and state parameters to obtain state bits. The state bits are the coupling between the test step state and the state parameters. Identify the state bits to obtain the test steps of the multi-channel linkage group. The pause recognition is triggered after each of the aforementioned test steps is completed; Set a cutoff condition for each test step, and trigger the pause recognition when the cutoff condition is met.

6. The cell synchronous linkage testing device according to claim 5, characterized in that, The device further includes: The synchronization protection module is used to set the synchronization safety protection threshold for each test step. If a member channel triggers the synchronization safety protection threshold, the test of the multi-channel linkage group is suspended for troubleshooting.

7. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, The processor executes the computer program to implement the cell synchronous linkage test method as described in any one of claims 1 to 4.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the cell synchronous linkage test method as described in any one of claims 1 to 4.

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