Battery pack thermal runaway test method and device, electronic equipment and storage medium

Abstract

The invention relates to a battery pack thermal runaway test method and device, electronic equipment and a storage medium, and the method comprises the steps: matching an optimal test strategy of a current battery pack according to a thermal runaway test demand, and according to the optimal test strategy, determining battery cells meeting preset peripheral conditions around the target battery cell in the current battery pack and target electric quantities of the battery cells meeting the preset peripheral conditions, and adjusting the battery cells meeting the preset peripheral conditions according to the target electric quantities of the battery cells meeting the preset peripheral conditions. And carrying out thermal runaway test on the current battery pack after the adjustment is completed to obtain a thermal runaway test result of the current battery pack. According to the method, the battery cell electric quantity close to the target battery cell is distributed, so that the problems that the fire risk of a battery pack thermal runaway test in related technologies is high, the high-voltage connection state in a real battery pack cannot be provided, and the reliability of an experiment result is reduced are solved, the fire risk in the test process is effectively reduced, and the test efficiency is improved. Multiple thermal runaway tests can be carried out in a single battery pack on the premise that mutual interference influence is controllable.

Description

Technical Field

[0001] The present invention relates to the field of battery testing technology, and in particular to a battery pack thermal runaway test method, device, electronic equipment and storage medium. Background Art

[0002] As battery safety issues become increasingly prominent, manufacturers will verify the safety protection scheme in the battery pack through thermal runaway tests during the battery development process. During the verification process, for verification tests that need to be close to the entire pack environment but cannot affect subsequent analysis due to fire or explosion after thermal diffusion of the battery cell, the relevant technology generally adopts the method of using aluminum blocks to simulate filling the battery cell for testing, but this measure cannot verify the high-voltage connection status in the entire pack environment. Therefore, the existing test methods have the following problems:

[0003] (1) If the thermal runaway test is conducted on a normal whole pack, the risk of fire will be very high if the battery cells spread to more than one cell, which will make subsequent disassembly and analysis inconvenient. In addition, the battery pack can only complete a single-point trigger, which increases the development cost.

[0004] (2) Using aluminum blocks to simulate filling of battery cells cannot provide the high-voltage connection status in a real battery pack, artificially avoiding the risk of high-voltage failure in the test, which will reduce the credibility of the test results.

[0005] Related technologies also propose a method for detecting the spread of thermal runaway inside a battery. By establishing a corresponding relationship between each electrode layer and the different positions of a single battery cell, a thermal runaway test is performed, and the sub-voltage of each electrode layer is obtained respectively to determine the spread of thermal runaway inside the battery. However, when the battery cell spreads to more than one cell, the risk of fire is very high, which is not convenient for subsequent disassembly and analysis, increasing development costs. Summary of the invention

[0006] One of the objects of the present invention is to provide a battery pack thermal runaway test method to solve the problem in the related art that the battery pack thermal runaway test has a high fire risk and cannot provide the high-voltage connection status in the real battery pack, resulting in reduced credibility of the experimental results; the second object is to provide a battery pack thermal runaway test device; the third object is to provide an electronic device; and the fourth object is to provide a computer-readable storage medium.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0008] A battery pack thermal runaway test method comprises the following steps: obtaining a thermal runaway test requirement for a current battery pack; matching an optimal test strategy for the current battery pack according to the thermal runaway test requirement, and determining battery cells that meet preset peripheral conditions around a target battery cell in the current battery pack and a target power of the battery cells that meet the preset peripheral conditions according to the optimal test strategy; and adjusting the battery cells that meet the preset peripheral conditions according to the target power of the battery cells that meet the preset peripheral conditions, and performing a thermal runaway test on the current battery pack after the adjustment is completed, to obtain a thermal runaway test result for the current battery pack.

[0009] According to the above-mentioned technical means, by allocating the power of the target cell and the adjacent cells, the problem of high fire risk in the thermal runaway test of the battery pack in the related technology and the inability to provide the high voltage connection status in the real battery pack, which leads to reduced credibility of the experimental results, is solved. The risk of fire during the test is effectively reduced, and multiple thermal runaway tests can be carried out in a single battery pack under the premise that mutual interference and influence can be controlled, which effectively reduces the risk of fire during the test and reduces development costs.

[0010] Further, the thermal runaway test requirement includes at least one of a single-cell thermal runaway test requirement, a single-cell diffuse thermal runaway test requirement, and a dual-cell diffuse thermal runaway test requirement.

[0011] According to the above-mentioned technical means, the battery cells are tested based on different thermal runaway test requirements, and several thermal runaway tests can be arranged and completed successively in the same battery pack.

[0012] Furthermore, the optimal test strategy for matching the current battery pack according to the thermal runaway test requirement includes: if the thermal runaway test requirement is the single-cell thermal runaway test requirement, then the optimal test strategy is to adjust the target power of the cells around the target cell that meet the first preset peripheral conditions to be lower than a first preset threshold value, and the target power of the remaining cells is a preset standard power.

[0013] According to the above-mentioned technical means, when the thermal runaway test requirement is a single-cell thermal runaway test requirement, the risk of fire during the test is effectively reduced by adjusting the cells around the target cell to meet the first preset peripheral conditions and the target power, thereby reducing development costs and making the high voltage of the internal circuit of the battery pack slightly lower than the high voltage of the fully charged state. During the test, the risk of test failure caused by a short circuit in the high-voltage circuit can still be taken into account.

[0014] Furthermore, the optimal test strategy for matching the current battery pack according to the thermal runaway test requirement also includes: if the thermal runaway test requirement is the single-cell diffused thermal runaway test requirement, then the optimal test strategy is to adjust the target power of the cells around the target cell that meet the second preset peripheral conditions to be lower than a second preset threshold value, and the target power of the remaining cells is the preset standard power.

[0015] According to the above technical means, when the thermal runaway test requirement is a single-cell diffusion thermal runaway test requirement, the risk of fire during the test is effectively reduced by adjusting the cells around the target cell to meet the second preset peripheral conditions and target power, thereby reducing development costs.

[0016] Furthermore, the optimal test strategy for matching the current battery pack according to the thermal runaway test requirement also includes: if the thermal runaway test requirement is the dual-cell diffused thermal runaway test requirement, then the optimal test strategy is to adjust the target power of the cells around the target cell that meet the third preset peripheral conditions to be lower than a third preset threshold value, and the target power of the remaining cells is the preset standard power.

[0017] According to the above technical means, when the thermal runaway test requirement is a dual-cell diffusion thermal runaway test requirement, the risk of fire and development cost during the test are effectively reduced by adjusting the cells around the target cell to meet the third preset peripheral conditions and target power.

[0018] A battery pack thermal runaway test device comprises: an acquisition module for acquiring a thermal runaway test requirement of a current battery pack; a determination module for matching an optimal test strategy for the current battery pack according to the thermal runaway test requirement, and determining, according to the optimal test strategy, battery cells that meet preset peripheral conditions around a target battery cell in the current battery pack and a target power of the battery cells that meet the preset peripheral conditions; a test module for adjusting the battery cells that meet the preset peripheral conditions according to the target power of the battery cells that meet the preset peripheral conditions, and performing a thermal runaway test on the current battery pack after the adjustment is completed, to obtain a thermal runaway test result of the current battery pack.

[0019] Further, the thermal runaway test requirement includes at least one of a single-cell thermal runaway test requirement, a single-cell diffuse thermal runaway test requirement, and a dual-cell diffuse thermal runaway test requirement.

[0020] Furthermore, the determination module is also used for: if the thermal runaway test requirement is the single-cell thermal runaway test requirement, then the optimal test strategy is to adjust the target power of the cells around the target cell that meet the first preset peripheral conditions to be lower than a first preset threshold value, and the target power of the remaining cells is a preset standard power.

[0021] Furthermore, the determination module is also used for: if the thermal runaway test requirement is the single-cell diffused thermal runaway test requirement, then the optimal test strategy is to adjust the target power of the cells around the target cell that meet the second preset peripheral conditions to be lower than a second preset threshold value, and the target power of the remaining cells is the preset standard power.

[0022] Furthermore, the determination module is also used for: if the thermal runaway test requirement is the dual-cell diffused thermal runaway test requirement, then the optimal test strategy is to adjust the target power of the cells around the target cell that meet the third preset peripheral conditions to be lower than a third preset threshold value, and the target power of the remaining cells is the preset standard power.

[0023] An electronic device comprises a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement a battery pack thermal runaway test method as described in the above embodiment.

[0024] A computer-readable storage medium stores a computer program, which is executed by a processor to implement the battery pack thermal runaway test method as described in the above embodiment.

[0025] Beneficial effects of the present invention:

[0026] (1) The present invention solves the problem in the related art that the fire risk of the battery pack thermal runaway test is high and the high voltage connection state in the real battery pack cannot be provided, which reduces the credibility of the experimental results by distributing the power of the target battery cell and the adjacent battery cells. The risk of fire during the test is effectively reduced, and multiple thermal runaway tests can be performed in a single battery pack under the premise that the mutual interference and influence are controllable.

[0027] (2) The present invention effectively reduces the risk of fire during the test by adjusting the cells around the target cell to meet the preset peripheral conditions and target power. Even if the high voltage of the circuit in the battery pack is slightly lower than the high voltage in the fully charged state, the risk of test failure caused by a short circuit in the high voltage circuit can still be verified during the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a flow chart of the battery pack thermal runaway test method of the present invention;

[0029] Figure 2 It is a schematic diagram of a simple PACK structure in the present invention;

[0030] Figure 3 It is a block diagram of a thermal runaway test device for a battery pack according to the present invention;

[0031] Figure 4 It is a schematic structural diagram of the electronic device of the present invention.

[0032] Among them, 10-battery pack thermal runaway test device; 100-acquisition module; 200-determination module; 300-test module; 401-memory; 402-processor; 403-communication interface; 1-PACK box; 2-standard power battery cell; 3-copper busbar; 4-target battery cell; 5-less than 60% SOC battery cell; 6-BMS (Battery Management System); 7-BDU (Battery Disconnect Unit). DETAILED DESCRIPTION

[0033] The following will describe the embodiments of the present invention with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention, not for limiting the scope of protection of the present invention.

[0034] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0035] This embodiment proposes a battery pack thermal runaway test method, such as Figure 1 As shown, the following steps are included:

[0036] In this embodiment, the simple structure of the battery pack is as follows Figure 2 As shown, 1-PACK box, 2-standard power battery cell (using upper limit SOC), 3-copper busbar, 4-target battery cell (using upper limit SOC), 5-battery cell below 60% SOC, 6-BMS, 7-BDU.

[0037] In step S101, the thermal runaway test requirements of the current battery pack are obtained.

[0038] In some embodiments, the thermal runaway test requirement includes at least one of a single-cell thermal runaway test requirement, a single-cell diffuse thermal runaway test requirement, and a dual-cell diffuse thermal runaway test requirement.

[0039] It should be understood that there are many types of risk verification for battery packs, such as verifying the risk of thermal runaway diffusion and non-thermal runaway diffusion, verifying high-voltage circuits, short circuit risks, etc.

[0040] When the battery pack does not need to verify the risk of thermal runaway spread, this embodiment only needs to perform a single-cell thermal runaway test when the entire battery pack is in a fully charged high-voltage environment. When the battery pack needs to verify the risk of thermal runaway spread, this embodiment performs a single-cell diffusion thermal runaway test and a dual-cell diffusion thermal runaway test.

[0041] In step S102, the optimal test strategy of the current battery pack is matched according to the thermal runaway test requirements, and the cells that meet the preset peripheral conditions around the target cell in the current battery pack and the target power of the cells that meet the preset peripheral conditions are determined according to the optimal test strategy.

[0042] Among them, in some embodiments, the optimal test strategy for the current battery pack is matched according to the thermal runaway test requirements, including: if the thermal runaway test requirement is a single-cell thermal runaway test requirement, the optimal test strategy is to adjust the target power of the cells around the target cell that meet the first preset peripheral conditions to be lower than the first preset threshold, and the target power of the remaining cells is the preset standard power.

[0043] The first preset threshold may be a threshold preset by a user, a threshold obtained through a limited number of experiments, or a threshold obtained through a limited number of computer simulations. For ease of understanding, preferably, the first preset threshold is set to 60% SOC.

[0044] Among them, the target power of the cells that meet the first preset peripheral conditions around the target cell is adjusted to be lower than the first preset threshold value, and the target power of the remaining cells is the preset standard power. It can be understood that the first layer of peripheral cells of the target cell is charged to 60% SOC, and the remaining cells are charged to the preset standard power; or the first and second layers of peripheral cells of the target cell are charged to 60% SOC, and the remaining cells are charged to the preset standard power; or all peripheral cells of the target cell are charged to 60% SOC. Technical personnel in related fields can adjust the power of different layers of peripheral cells of the target cell according to different risk verifications of the battery pack.

[0045] Specifically, when the battery pack does not need to verify the diffusion risk, if the verification requirement of the battery pack is the single-cell thermal runaway test requirement, the best test strategy is to conduct a single-cell thermal runaway test on the entire battery pack under a high-voltage environment, charge the peripheral cells of the target cell to less than 60% SOC, and charge the remaining cells to the preset standard power. While reducing the risk of fire during the test, it can also take into account the risk of test failure caused by verifying the high-voltage circuit short circuit.

[0046] Further, in some embodiments, matching the optimal test strategy for the current battery pack according to the thermal runaway test requirement also includes: if the thermal runaway test requirement is a single-cell diffused thermal runaway test requirement, the optimal test strategy is to adjust the target power of the cells around the target cell that meet the second preset peripheral conditions to be lower than the second preset threshold, and the target power of the remaining cells is the preset standard power.

[0047] The cell of the second preset peripheral condition is a peripheral cell in a layer adjacent to the target cell. The second preset threshold value may be a threshold value pre-set by the user, a threshold value obtained through a limited number of experiments, or a threshold value obtained through a limited number of computer simulations. For ease of understanding, preferably, the second preset threshold value is set to 60% SOC.

[0048] Specifically, when the battery pack needs to verify the diffusion risk, if the thermal runaway diffusion is controlled to single-cell thermal runaway, the best test strategy is to charge the outer cells adjacent to the target cell to 60% SOC, and charge the remaining cells to a preset standard power. If the outer cells adjacent to the target cell have already diffused and the remaining cells are at the preset standard power, the battery pack is very likely to catch fire. Therefore, by keeping the outer cells adjacent to the target cell at a low power level, the risk of fire can be reduced, which acts as a "fire barrier".

[0049] Further, in some embodiments, matching the optimal test strategy for the current battery pack according to the thermal runaway test requirement also includes: if the thermal runaway test requirement is a dual-cell diffused thermal runaway test requirement, the optimal test strategy is to adjust the target power of the cells around the target cell that meet the third preset peripheral conditions to be lower than the third preset threshold, and the target power of the remaining cells is the preset standard power.

[0050] Among them, the battery cell of the third preset peripheral condition is the peripheral battery cell in the two layers adjacent to the target battery cell. The third preset threshold value can be a threshold value pre-set by the user, a threshold value obtained through a limited number of experiments, or a threshold value obtained through a limited number of computer simulations. For ease of understanding, preferably, the third preset threshold value is set to 60% SOC.

[0051] Specifically, if the thermal runaway spread is controlled within the dual-cell thermal runaway, the optimal test strategy is to charge the target power of the two layers of peripheral cells adjacent to the target cell to 60% SOC, and charge the remaining cells to the preset standard power. If the two layers of peripheral cells adjacent to the target cell have spread, and the remaining cells are at the preset standard power, the battery pack is very likely to catch fire. Therefore, by keeping the two layers of peripheral cells adjacent to the target cell at low power, the risk of fire can be reduced, which acts as a "fire barrier".

[0052] In step S103, the battery cells meeting the preset peripheral conditions are adjusted according to the target power of the battery cells meeting the preset peripheral conditions, and after the adjustment is completed, a thermal runaway test is performed on the current battery pack to obtain a thermal runaway test result of the current battery pack.

[0053] Since the peripheral cells of the target cell have low power, the risk of PACK fire is relatively low. By reasonably arranging the positions of the target cell and the cells with power below 60% SOC and ensuring that the degree of mutual influence is controllable, several thermal runaway tests can be arranged in the same PACK and completed successively. That is, multiple thermal runaway tests can be triggered in a single PACK to obtain the thermal runaway test results of the current battery pack.

[0054] In summary, this embodiment arranges the cells with a charge lower than 60% SOC in the target cell and the outer layer of the adjacent cells. During the test, if the cells spread, the risk of fire in the low-charge cells is very low, and it acts as a "fire barrier" to reduce the risk of fire in the battery pack; if the cells do not spread, the high voltage of the internal circuit of the battery pack is slightly lower than the high voltage of the fully charged state, and the risk of test failure caused by the short circuit of the high-voltage circuit can still be taken into account during the test.

[0055] According to the battery pack thermal runaway test method of the embodiment of the present invention, the optimal test strategy of the current battery pack is matched according to the thermal runaway test requirements, and the target power of the cells that meet the preset peripheral conditions and the cells that meet the preset peripheral conditions around the target cells in the current battery pack is determined according to the optimal test strategy, and the cells that meet the preset peripheral conditions are adjusted according to the target power of the cells that meet the preset peripheral conditions, and after the adjustment is completed, the thermal runaway test is performed on the current battery pack to obtain the thermal runaway test results of the current battery pack. Therefore, the present invention solves the problem of high fire risk in the thermal runaway test of the battery pack in the related art by allocating the power of the cells adjacent to the target cells, and the problem of reduced credibility of the experimental results caused by the inability to provide the high-voltage connection status in the real battery pack, effectively reducing the risk of fire during the test process and reducing development costs. At the same time, multiple thermal runaway tests can be performed in a single battery pack under the premise that the mutual interference and influence are controllable, thereby improving the credibility of the test results.

[0056] In this embodiment, a battery pack thermal runaway test device 10 is also proposed. Figure 3 As shown, it includes: an acquisition module 100, which is used to obtain the thermal runaway test requirements of the current battery pack; a determination module 200, which is used to match the optimal test strategy of the current battery pack according to the thermal runaway test requirements, and determine the target power of the battery cells that meet the preset peripheral conditions and the battery cells that meet the preset peripheral conditions around the target battery cells in the current battery pack according to the optimal test strategy; a test module 300, which is used to adjust the battery cells that meet the preset peripheral conditions according to the target power of the battery cells that meet the preset peripheral conditions, and perform a thermal runaway test on the current battery pack after the adjustment is completed, to obtain the thermal runaway test result of the current battery pack.

[0057] Further, in some embodiments, the thermal runaway test requirement includes at least one of a single-cell thermal runaway test requirement, a single-cell diffuse thermal runaway test requirement, and a dual-cell diffuse thermal runaway test requirement.

[0058] Further, in some embodiments, the determination module 200 is also used to: if the thermal runaway test requirement is a single-cell thermal runaway test requirement, the optimal test strategy is to adjust the target power of the cells around the target cell that meet the first preset peripheral conditions to be lower than the first preset threshold value, and the target power of the remaining cells is the preset standard power.

[0059] Further, in some embodiments, the determination module 200 is also used to: if the thermal runaway test requirement is a single-cell diffused thermal runaway test requirement, the optimal test strategy is to adjust the target power of the cells around the target cell that meet the second preset peripheral conditions to be lower than the second preset threshold value, and the target power of the remaining cells is the preset standard power.

[0060] Further, in some embodiments, the determination module 200 is also used to: if the thermal runaway test requirement is a dual-cell diffused thermal runaway test requirement, the optimal test strategy is to adjust the target power of the cells around the target cell that meet the third preset peripheral conditions to be lower than the third preset threshold, and the target power of the remaining cells is the preset standard power.

[0061] It should be noted that the aforementioned explanation of the battery pack thermal runaway test method embodiment is also applicable to the battery pack thermal runaway test device of this embodiment, and will not be repeated here.

[0062] According to the battery pack thermal runaway test device of the embodiment of the present invention, the optimal test strategy of the current battery pack is matched according to the thermal runaway test requirements, and the target power of the cells that meet the preset peripheral conditions and the cells that meet the preset peripheral conditions around the target cells in the current battery pack is determined according to the optimal test strategy, and the cells that meet the preset peripheral conditions are adjusted according to the target power of the cells that meet the preset peripheral conditions, and after the adjustment is completed, the thermal runaway test is performed on the current battery pack to obtain the thermal runaway test results of the current battery pack. Therefore, the present invention solves the problem of high fire risk in the thermal runaway test of the battery pack in the related art by allocating the power of the cells adjacent to the target cells, and cannot provide the high-voltage connection status in the real battery pack, resulting in reduced credibility of the experimental results, effectively reducing the risk of fire during the test process, reducing development costs, and at the same time, multiple thermal runaway tests can be performed in a single battery pack under the premise that the mutual interference and influence are controllable, thereby improving the credibility of the test results.

[0063] Figure 4 A schematic diagram of the structure of an electronic device provided by an embodiment of the present invention.

[0064] The electronic device may include: a memory 401 , a processor 402 , and a computer program stored in the memory 401 and executable on the processor 402 .

[0065] When the processor 402 executes the program, the battery pack thermal runaway test method provided in the above embodiment is implemented.

[0066] Furthermore, the electronic device further comprises:

[0067] The communication interface 403 is used for communication between the memory 401 and the processor 402 .

[0068] The memory 401 is used to store computer programs that can be executed on the processor 402 .

[0069] The memory 401 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

[0070] If the memory 401, the processor 402 and the communication interface 403 are implemented independently, the communication interface 403, the memory 401 and the processor 402 can be connected to each other through a bus and communicate with each other. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component (PCI) bus or an Extended Industry Standard Architecture (EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 4 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0071] Optionally, in a specific implementation, if the memory 401, the processor 402 and the communication interface 403 are integrated on a chip, the memory 401, the processor 402 and the communication interface 403 can communicate with each other through an internal interface.

[0072] The processor 402 may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present invention.

[0073] An embodiment of the present invention further provides a computer-readable storage medium having a computer program stored thereon, which implements the above-mentioned battery pack thermal runaway test method when executed by a processor.

[0074] The above embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Any equivalent substitution or change made by a person skilled in the art on the basis of the present invention is within the protection scope of the present invention.

Claims

1. A battery pack thermal runaway test method, characterized in that: The following steps are involved: Obtain the thermal runaway test requirements for the current battery pack; Matching the optimal test strategy of the current battery pack according to the thermal runaway test requirement, and determining the battery cells that meet the preset peripheral conditions around the target battery cell in the current battery pack and the target power of the battery cells that meet the preset peripheral conditions according to the optimal test strategy; and The battery cell that meets the preset peripheral conditions is adjusted according to the target power of the battery cell that meets the preset peripheral conditions, and after the adjustment is completed, a thermal runaway test is performed on the current battery pack to obtain a thermal runaway test result of the current battery pack.

2. The method according to claim 1, characterized in that The thermal runaway test requirement includes at least one of a single-cell thermal runaway test requirement, a single-cell diffuse thermal runaway test requirement, and a dual-cell diffuse thermal runaway test requirement.

3. The method according to claim 2, characterized in that The optimal test strategy for matching the current battery pack according to the thermal runaway test requirement includes: If the thermal runaway test requirement is the single-cell thermal runaway test requirement, the optimal test strategy is to adjust the target power of the cells around the target cell that meet the first preset peripheral conditions to be lower than the first preset threshold value, and the target power of the remaining cells is the preset standard power.

4. The method according to claim 2, characterized in that: The optimal test strategy for matching the current battery pack according to the thermal runaway test requirement also includes: If the thermal runaway test requirement is the single-cell diffused thermal runaway test requirement, the optimal test strategy is to adjust the target power of the cells around the target cell that meet the second preset peripheral conditions to be lower than the second preset threshold value, and the target power of the remaining cells is the preset standard power.

5. The method according to claim 2, characterized in that: The optimal test strategy for matching the current battery pack according to the thermal runaway test requirement also includes: If the thermal runaway test requirement is the dual-cell diffused thermal runaway test requirement, the optimal test strategy is to adjust the target power of the cells around the target cell that meet the third preset peripheral conditions to be lower than the third preset threshold value, and the target power of the remaining cells is the preset standard power.

6. A battery pack thermal runaway test device, characterized in that: include: The acquisition module is used to obtain the thermal runaway test requirements of the current battery pack; A determination module, used to match the optimal test strategy of the current battery pack according to the thermal runaway test requirement, and determine the battery cells that meet the preset peripheral conditions around the target battery cells in the current battery pack and the target power of the battery cells that meet the preset peripheral conditions according to the optimal test strategy; as well as A test module is used to adjust the battery cell that meets the preset peripheral conditions according to the target power of the battery cell that meets the preset peripheral conditions, and after the adjustment is completed, perform a thermal runaway test on the current battery pack to obtain the thermal runaway test result of the current battery pack.

7. The device according to claim 6, characterized in that The thermal runaway test requirement includes at least one of a single-cell thermal runaway test requirement, a single-cell diffuse thermal runaway test requirement, and a dual-cell diffuse thermal runaway test requirement.

8. The device according to claim 7, characterized in that The determining module is further used for: If the thermal runaway test requirement is the single-cell thermal runaway test requirement, the optimal test strategy is to adjust the target power of the cells around the target cell that meet the first preset peripheral conditions to be lower than the first preset threshold value, and the target power of the remaining cells is the preset standard power.

9. An electronic device, characterized in that: Including memory and processor; The processor runs a program corresponding to the executable program code by reading the executable program code stored in the memory, so as to implement the battery pack thermal runaway test method as described in any one of claims 1 to 5.

10. A computer-readable storage medium storing a computer program, characterized in that: When the program is executed by a processor, the battery pack thermal runaway test method as described in any one of claims 1 to 5 is implemented.

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