Cylindrical battery thermal runaway detection method and device

Abstract

The application relates to battery detection and provides a cylindrical battery thermal runaway detection method and device, which is used for detecting the thermal runaway of a cylindrical battery after the normal wakeup of a whole vehicle and after the power-off hibernation. The method comprises the following steps: in a current inspection cycle, the cylindrical battery is inspected, and each detection data of the cylindrical battery is obtained; the detection data is matched with each detection condition, the target detection condition triggered by the detection data is obtained from each detection condition, the target detection condition set is generated according to the obtained each target detection condition; the target detection condition set is matched with each preset detection condition set, and the thermal runaway detection result of the cylindrical battery is determined; wherein each detection data comprises the temperature of the cylindrical battery, the voltage of the cylindrical battery, the pressure of the cylindrical battery and the insulation data of the cylindrical battery. The cylindrical battery thermal runaway detection method provided in the application can improve the detection accuracy of the thermal runaway of the cylindrical battery.

Description

Technical Field

[0001] This application relates to battery testing, specifically to a method and apparatus for detecting thermal runaway of cylindrical batteries. Background Technology

[0002] To ensure the safety of cylindrical batteries, thermal runaway detection is typically required. Currently, thermal runaway detection for cylindrical batteries usually involves monitoring the temperature of the battery module to determine if thermal runaway has occurred. However, because the explosion-proof valve of a cylindrical battery sprays water to the bottom and may even spray water a second time, abnormal temperatures may not be caused by thermal runaway, making it difficult to accurately detect whether thermal runaway has occurred. Summary of the Invention

[0003] This application aims to address at least one of the technical problems existing in the related art. To this end, this application proposes a method for detecting thermal runaway of cylindrical batteries, which can improve the accuracy of detecting thermal runaway of cylindrical batteries.

[0004] This application also proposes a cylindrical battery thermal runaway detection device.

[0005] This application also proposes an electronic device.

[0006] This application also proposes a computer-readable storage medium.

[0007] The method for detecting thermal runaway of a cylindrical battery according to the first aspect of this application includes:

[0008] During the current inspection cycle, the cylindrical batteries are inspected, and various test data of the cylindrical batteries are obtained.

[0009] The detection data is matched with each detection condition, and the target detection condition triggered by the detection data is obtained from each detection condition, so as to generate a target detection condition set based on the obtained target detection conditions.

[0010] The target detection condition set is matched with each preset detection condition set to determine the thermal runaway detection result of the cylindrical battery;

[0011] The detection data include the temperature of the cylindrical battery, the voltage of the cylindrical battery, the pressure of the cylindrical battery, and the insulation data of the cylindrical battery.

[0012] By matching the various detection data of cylindrical batteries acquired during the current inspection cycle with various detection conditions, the target detection conditions triggered by the detection data are obtained from each detection condition. Based on these target detection conditions, a target detection condition set is generated. The matching result of the target detection condition set with each preset detection condition set is then used to determine the thermal runaway detection result of the cylindrical battery. This allows for the use of multi-dimensional detection data to judge the thermal runaway of cylindrical batteries, thereby improving the accuracy of thermal runaway detection.

[0013] According to one embodiment of this application, during the current inspection cycle, the cylindrical battery is inspected, including:

[0014] The voltage of the cylindrical battery is determined to be within a preset voltage range, and the cylindrical battery is inspected within the current inspection cycle.

[0015] According to one embodiment of this application, it also includes:

[0016] If the target detection condition is triggered within the current inspection cycle and the thermal runaway detection result of the cylindrical battery is not out of control, the duration of the current inspection cycle is extended to a first duration.

[0017] According to one embodiment of this application, determining that the target detection condition is triggered within the current inspection cycle, and extending the duration of the current inspection cycle to a first duration, includes:

[0018] If the target detection condition is determined to be triggered within the current inspection cycle, and the thermal runaway detection result of the cylindrical battery is not in control, then the target detection condition triggered within the current inspection cycle is detected.

[0019] If the target detection condition triggered in the current inspection cycle is different from the target detection condition triggered in the previous inspection cycle, the duration of the current inspection cycle is extended to a first duration.

[0020] According to one embodiment of this application, it also includes:

[0021] If the target detection condition is triggered at the end of the current inspection cycle, and the thermal runaway detection result of the cylindrical battery is not out of control, the duration of the current inspection cycle is extended to a second duration.

[0022] According to one embodiment of this application, matching the target detection condition set with each preset detection condition set to determine the thermal runaway detection result of the cylindrical battery includes:

[0023] If the target detection condition set is determined to be mismatched with each of the preset detection condition sets, the thermal runaway detection result of the cylindrical battery is recorded as not runaway.

[0024] If a preset detection condition set is found that matches the target detection condition set, the thermal runaway detection result of the cylindrical battery is recorded as thermal runaway.

[0025] According to one embodiment of this application, it also includes:

[0026] If the thermal runaway detection result is confirmed as thermal runaway, the duration of the current inspection cycle is extended to a third duration.

[0027] A cylindrical battery thermal runaway detection device according to a second aspect embodiment of this application includes:

[0028] The detection data acquisition module is used to inspect the cylindrical battery during the current inspection cycle and acquire various detection data of the cylindrical battery.

[0029] The detection condition acquisition module is used to match the detection data with each detection condition, and obtain the target detection condition triggered by the detection data from each detection condition, so as to generate a target detection condition set based on the obtained target detection conditions.

[0030] The thermal runaway detection module is used to match the target detection condition set with each preset detection condition set to determine the thermal runaway detection result of the cylindrical battery.

[0031] The detection data include the temperature of the cylindrical battery, the voltage of the cylindrical battery, the pressure of the cylindrical battery, and the insulation data of the cylindrical battery.

[0032] An electronic device according to a third aspect of this application includes a processor and a memory storing a computer program, wherein the processor executes the computer program to implement the cylindrical battery thermal runaway detection method described in any of the above embodiments.

[0033] A computer-readable storage medium according to a fourth aspect of this application stores a computer program thereon, which, when executed by a processor, implements the cylindrical battery thermal runaway detection method described in any of the above embodiments.

[0034] A vehicle according to a fifth aspect of this application includes an accelerator pedal and electronic devices as described in the above embodiments.

[0035] The above-described one or more technical solutions in the embodiments of this application have at least one of the following technical effects:

[0036] By matching the various detection data of cylindrical batteries acquired during the current inspection cycle with various detection conditions, the target detection conditions triggered by the detection data are obtained from each detection condition. Based on these target detection conditions, a target detection condition set is generated. The matching result of the target detection condition set with each preset detection condition set is then used to determine the thermal runaway detection result of the cylindrical battery. This allows for the use of multi-dimensional detection data to judge the thermal runaway of cylindrical batteries, thereby improving the accuracy of thermal runaway detection. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a schematic flowchart of the cylindrical battery thermal runaway detection method provided in the embodiments of this application;

[0039] Figure 2 This is a schematic diagram illustrating the setting of the detection conditions provided in the embodiments of this application;

[0040] Figure 3 This is a schematic diagram of the inspection duration of the normal inspection cycle provided in the embodiments of this application;

[0041] Figure 4 This is a schematic diagram of the inspection duration when the target detection condition is triggered within the current inspection cycle, provided in an embodiment of this application.

[0042] Figure 5 This is a schematic diagram of the inspection duration when the target detection condition is triggered within the current inspection cycle, provided in another embodiment of this application;

[0043] Figure 6 This is a schematic diagram of the inspection duration when the target detection condition is triggered within the current inspection cycle, provided by another embodiment of this application;

[0044] Figure 7 This is a schematic diagram of the inspection duration when the target detection condition is triggered within the current inspection cycle, provided by another embodiment of this application;

[0045] Figure 8 This is a schematic diagram of the inspection duration when the target detection condition is triggered at the end of the current inspection cycle, provided in an embodiment of this application.

[0046] Figure 9 This is a schematic diagram of the inspection duration triggered when thermal runaway of a cylindrical battery is detected, provided in an embodiment of this application.

[0047] Figure 10 This is a schematic diagram of the structure of the cylindrical battery thermal runaway detection device provided in the embodiments of this application;

[0048] Figure 11 This is a schematic diagram of the structure of the electronic device provided in the embodiments of this application. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0050] The following will provide a detailed description and explanation of the cylindrical battery thermal runaway detection method and apparatus provided in this application through several specific embodiments.

[0051] In one embodiment, a method for detecting thermal runaway of a cylindrical battery is provided. This method is applied to a controller for performing thermal runaway inspections on the cylindrical battery after the vehicle is normally awakened and after power-down hibernation. The controller can be a terminal device or a server. The terminal device can be a desktop or portable terminal, such as a desktop computer or laptop computer, or an in-vehicle terminal. The server can be a standalone server or a server cluster composed of multiple servers. It can also be a cloud server providing basic cloud computing services such as cloud services, cloud message databases, cloud computing, cloud functions, cloud storage, network services, cloud communication, middleware services, domain name services, security services, CDN, and large message data and artificial intelligence sampling point devices.

[0052] like Figure 1 As shown, the method for detecting thermal runaway of a cylindrical battery provided in this embodiment includes:

[0053] Step 101: During the current inspection cycle, inspect the cylindrical battery and obtain various test data of the cylindrical battery.

[0054] Step 102: Match the detection data with each detection condition, and obtain the target detection condition triggered by the detection data from each detection condition, so as to generate a target detection condition set based on the obtained target detection conditions;

[0055] Step 103: Match the target detection condition set with each preset detection condition set to determine the thermal runaway detection result of the cylindrical battery;

[0056] The detection data include the temperature of the cylindrical battery, the voltage of the cylindrical battery, the pressure of the cylindrical battery, and the insulation data of the cylindrical battery.

[0057] By matching the various detection data of cylindrical batteries acquired during the current inspection cycle with various detection conditions, the target detection conditions triggered by the detection data are obtained from each detection condition. Based on these target detection conditions, a target detection condition set is generated. The matching result of the target detection condition set with each preset detection condition set is then used to determine the thermal runaway detection result of the cylindrical battery. This allows for the use of multi-dimensional detection data to judge the thermal runaway of cylindrical batteries, thereby improving the accuracy of thermal runaway detection.

[0058] In one embodiment, the terminal device pre-stores a thermal runaway detection strategy table that records various detection conditions. For example, the detection strategy table may be as follows:

[0059]

[0060]

[0061]

[0062] After obtaining the thermal runaway detection strategy table, the cylindrical battery can be inspected according to the detection conditions in the table within the current inspection cycle to obtain various detection data. The thermal runaway inspection can be triggered during normal vehicle wake-up or during power-down hibernation. For example, when the vehicle stops, the BMS main control board (i.e., the controller) enters hibernation. If the pressure sensor (or pressure chip) detects an abnormal pressure at this time, the BMS main control board is woken up to perform thermal runaway detection.

[0063] To ensure effective inspection, the voltage of the 12V battery must be checked before inspecting the cylindrical batteries. If the 12V battery voltage is less than 10.5V or greater than 16V, it indicates an abnormal voltage that does not meet the BMS inspection requirements, and inspection should not be performed. If the 12V battery voltage is detected between 10.5V and 16V, inspection should proceed. Similarly, during the inspection process, if the 12V battery voltage is detected to be less than 10.5V or greater than 16V, the inspection should be stopped.

[0064] When inspecting cylindrical batteries, taking detection condition A in the table above as an example, the terminal device records 10 sets (5 seconds) of temperature data, including the current moment, at 0.5-second intervals within the current inspection cycle. The current temperature is compared with the previous 9 temperature data points. If the current temperature is 2°C higher than any of the previous temperatures, the detection condition is considered valid. Otherwise, the detection condition is considered invalid. If the detection condition is valid, it can be set to a new setting for easier subsequent inspections. If subsequent detection conditions remain valid, the setting is delayed.

[0065] Taking detection condition A in the table above as an example, such as... Figure 2 As shown, assuming that a certain detection data at time T2 meets the judgment condition of detection condition A, then detection condition A is set at time T2. At time T3, detection condition A is no longer met, so the setting of detection condition A continues until time T4 (T3+10s), after which the setting is cleared.

[0066] For other detection conditions in the thermal runaway detection strategy table, such as detection condition BE, they can be set immediately when the detection condition is met and cleared immediately when the detection condition disappears. The specific setting method for each detection condition can be set according to the actual situation.

[0067] When inspecting each piece of data, if all inspection conditions are not met, it indicates that there are no abnormalities in this inspection. If a certain inspection condition is determined to be met, this inspection condition is recorded as the target inspection condition triggered by the inspection data. Thus, all triggered target inspection conditions can be obtained from the various inspection conditions to form a target inspection condition set.

[0068] After obtaining the target detection condition set, it can be matched with the thermal runaway total condition table that records each preset detection condition set. If there is a preset detection condition set in the thermal runaway total condition table that is the same as the target detection condition set, it can be determined that the cylindrical battery has experienced thermal runaway; otherwise, it can be determined that the cylindrical battery has not runaway.

[0069] For example, the overall thermal runaway condition table can be shown in the following table:

[0070]

[0071]

[0072] Among them, AQ in the preset detection condition set corresponds to the detection condition AQ in the thermal runaway detection strategy table, that is, A&B&C represents the preset detection condition set composed of detection condition A, detection condition B and detection condition C.

[0073] To improve the accuracy of thermal runaway detection, the inspection duration of the current inspection cycle can be adjusted based on the inspection results.

[0074] Specifically, it can detect the trigger time of target detection conditions. If no target detection condition is triggered within the current inspection cycle, the inspection will proceed according to the preset duration of the current inspection cycle. For example, such as... Figure 3 As shown, if no target detection condition is triggered within the current inspection cycle, the system will normally wake up and inspect for 20 seconds. During this period, no messages will be sent out, but internal CAN messages will be exchanged normally. 20 seconds is defined as the wake-up duration, the effective detection duration is not less than 18 seconds, and the operating current time does not exceed 25 seconds.

[0075] In one embodiment, if the target detection condition is detected to be triggered within the current inspection cycle, and the thermal runaway detection result of the cylindrical battery is not out of control, then the duration of the current inspection cycle is extended to a first duration.

[0076] In one embodiment, it is assumed that the target detection condition triggered in the current inspection cycle is any one or more of the detection conditions AG, I, and J in the thermal runaway detection strategy table. That is, any one or more of the detection conditions AG, I, and J are triggered in the current inspection cycle, and subsequent triggers disappear before the end of the current inspection cycle. At the same time, the cylindrical battery is detected to be not runaway in the current inspection cycle. Then the current inspection cycle can be extended by 40 seconds, that is, it enters hibernation after a total time of 60 seconds.

[0077] For example, such as Figure 4 As shown, assuming the original duration of the current inspection cycle is T1-T4, and one of the detection conditions AG, I, and J is met at time T2, but this detection condition disappears at time T3, T3 < T4, and the detection condition is not met at time T4, then the current inspection cycle can be extended by 40 seconds, meaning it enters sleep mode after a total time of 60 seconds. Here, T1 represents the start time of the inspection, T2 represents the time when a detection condition is met during the inspection process (i.e., the time when the target detection condition is determined), T3 represents the time when the target detection condition disappears, and T4 represents the time when the time interval from T1 is a preset interval, such as 20 seconds.

[0078] In one embodiment, such as Figure 5As shown, assuming the target detection condition triggered within the current inspection cycle is detection condition H in the thermal runaway detection strategy table, i.e., an insulation fault is detected within the current inspection cycle, two additional insulation checks are performed, and the corresponding inspection time is extended to time T10. If all three insulation checks are abnormal, it is determined that there is an internal insulation fault in the battery, and the inspection time is extended to time T11 (i.e., 60 seconds). Data upload is triggered at time T10 and ends at time T11. Here, T9 represents the end time of the first insulation detection cycle, T10 represents the end time of the three insulation detection cycles, and T11 represents 60 seconds from T1. Alternatively, it can also be as follows: Figure 6 As shown, if the first insulation test fails at time T9, two additional insulation tests are performed, extending the inspection time to time T10 to satisfy three insulation test cycles. If one of the latter two insulation tests is normal, the battery's internal insulation is considered normal, no data is uploaded, and the battery enters sleep mode at time T10.

[0079] In one embodiment, such as Figure 7 As shown, assuming that the target detection condition triggered in the current inspection cycle is any one or more of the detection conditions LQ in the thermal runaway detection strategy table, that is, any one or more of the detection conditions LQ are triggered in the current inspection cycle, and the cylindrical battery is not detected to be runaway in the current inspection cycle, then the cycle is extended to 5 minutes to enter hibernation.

[0080] If the target detection conditions triggered within the current inspection cycle simultaneously include one or more of detection conditions AG, I, and J, and one or more of detection conditions LQ, and the thermal runaway detection result of the cylindrical battery is not in control, then the longer of the time period is used to extend the duration of the current inspection cycle to the first duration. If detection conditions A and L are triggered, then the current inspection cycle is extended to 5 minutes.

[0081] To avoid excessively long inspection cycles due to multiple triggers of a single fault, which could affect the power supply of the cylindrical battery, in one embodiment, the target detection condition is determined to be triggered within the current inspection cycle, and the duration of the current inspection cycle is extended to a first duration, including:

[0082] If the target detection condition is determined to be triggered within the current inspection cycle, and the thermal runaway detection result of the cylindrical battery is not in control, then the target detection condition triggered within the current inspection cycle is detected.

[0083] If the target detection condition triggered in the current inspection cycle is different from the target detection condition triggered in the previous inspection cycle, the duration of the current inspection cycle is extended to a first duration.

[0084] In one embodiment, when a target detection condition is detected to be triggered within the current inspection cycle, and the thermal runaway detection result of the cylindrical battery is not in control, the system checks whether the target detection condition triggered within the current inspection cycle is different from the target detection condition triggered in the previous inspection cycle. If they are the same, it indicates that the target detection condition has been triggered, and its impact on the current inspection cycle can be ignored. For example, if only detection condition A is triggered within the current inspection cycle, and detection condition A was triggered in the previous inspection cycle, the inspection duration of the current inspection cycle will not be modified.

[0085] If the target detection conditions triggered in the current inspection cycle are different from those triggered in the previous inspection cycle, it means that the target detection conditions triggered in the current inspection cycle are not repeated. In this case, the duration of the current inspection cycle is extended to the first duration to avoid multiple triggers of a single fault, which would cause the current inspection cycle to become too long and result in the 12V battery being depleted.

[0086] If the trigger time of the target detection condition is detected at the end of the current inspection cycle and the thermal runaway detection result of the cylindrical battery is not out of control, then the duration of the current inspection cycle will be extended to a second duration.

[0087] For example, such as Figure 8 As shown, the current inspection cycle is T1-T4. At time T4, at least one target detection condition is triggered. If at least one of the detection conditions AG is triggered and the thermal runaway detection result of the cylindrical battery is not out of control, then the current inspection cycle will be extended to 5 minutes.

[0088] In one embodiment, if the thermal runaway detection result is determined to be thermal runaway, the duration of the current inspection cycle is extended to a third duration.

[0089] For example, such as Figure 9 As shown, if it is determined that there is a preset detection condition set that matches the target detection condition set in the preset detection condition set, it means that the thermal runaway detection result is thermal runaway. At this time, the thermal runaway fault is triggered, and the system maintains a 5-hour wake-up state from the start of the thermal runaway determination, that is, the duration of the current inspection cycle is extended by 5 hours, until the current inspection cycle ends or the 12V battery voltage is less than 7V, and enters a hibernation state.

[0090] Meanwhile, when the thermal runaway detection result is confirmed as thermal runaway, an alarm message indicating thermal runaway of the cylindrical battery can be generated and sent to an external terminal to issue a thermal runaway alarm for the battery.

[0091] The cylindrical battery thermal runaway detection device provided in this application is described below. The cylindrical battery thermal runaway detection device described below can be referred to in correspondence with the cylindrical battery thermal runaway detection method described above.

[0092] In one embodiment, such as Figure 10 As shown, a cylindrical battery thermal runaway detection device is provided, comprising:

[0093] The detection data acquisition module 210 is used to inspect the cylindrical battery during the current inspection cycle and acquire various detection data of the cylindrical battery.

[0094] The detection condition acquisition module 220 is used to match the detection data with each detection condition, and obtain the target detection condition triggered by the detection data from each detection condition, so as to generate a target detection condition set based on the obtained target detection conditions.

[0095] The thermal runaway detection module 230 is used to match the target detection condition set with each preset detection condition set to determine the thermal runaway detection result of the cylindrical battery.

[0096] The detection data include the temperature of the cylindrical battery, the voltage of the cylindrical battery, the pressure of the cylindrical battery, and the insulation data of the cylindrical battery.

[0097] By matching the various detection data of cylindrical batteries acquired during the current inspection cycle with various detection conditions, the target detection conditions triggered by the detection data are obtained from each detection condition. Based on these target detection conditions, a target detection condition set is generated. The matching result of the target detection condition set with each preset detection condition set is then used to determine the thermal runaway detection result of the cylindrical battery. This allows for the use of multi-dimensional detection data to judge the thermal runaway of cylindrical batteries, thereby improving the accuracy of thermal runaway detection.

[0098] In one embodiment, the detection data acquisition module 210 is specifically used for:

[0099] The voltage of the cylindrical battery is determined to be within a preset voltage range, and the cylindrical battery is inspected within the current inspection cycle.

[0100] In one embodiment, the thermal runaway detection module 230 is further configured to:

[0101] If the target detection condition is triggered within the current inspection cycle and the thermal runaway detection result of the cylindrical battery is not out of control, the duration of the current inspection cycle is extended to a first duration.

[0102] In one embodiment, the thermal runaway detection module 230 is specifically used for:

[0103] If the target detection condition is determined to be triggered within the current inspection cycle, and the thermal runaway detection result of the cylindrical battery is not in control, then the target detection condition triggered within the current inspection cycle is detected.

[0104] If the target detection condition triggered in the current inspection cycle is different from the target detection condition triggered in the previous inspection cycle, the duration of the current inspection cycle is extended to a first duration.

[0105] In one embodiment, the thermal runaway detection module 230 is further configured to:

[0106] If the target detection condition is triggered at the end of the current inspection cycle, and the thermal runaway detection result of the cylindrical battery is not out of control, the duration of the current inspection cycle is extended to a second duration.

[0107] In one embodiment, the thermal runaway detection module 230 is specifically used for:

[0108] If the target detection condition set is determined to be mismatched with each of the preset detection condition sets, the thermal runaway detection result of the cylindrical battery is recorded as not runaway.

[0109] If a preset detection condition set is found that matches the target detection condition set, the thermal runaway detection result of the cylindrical battery is recorded as thermal runaway.

[0110] In one embodiment, the thermal runaway detection module 230 is further configured to:

[0111] If the thermal runaway detection result is confirmed as thermal runaway, the duration of the current inspection cycle is extended to a third duration.

[0112] Figure 11 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 11 As shown, the electronic device 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 via the communication bus 840. The processor 810 can call a computer program in the memory 830 to execute a cylindrical battery thermal runaway detection method, such as including:

[0113] During the current inspection cycle, the cylindrical batteries are inspected, and various test data of the cylindrical batteries are obtained.

[0114] The detection data is matched with each detection condition, and the target detection condition triggered by the detection data is obtained from each detection condition, so as to generate a target detection condition set based on the obtained target detection conditions.

[0115] The target detection condition set is matched with each preset detection condition set to determine the thermal runaway detection result of the cylindrical battery;

[0116] The detection data include the temperature of the cylindrical battery, the voltage of the cylindrical battery, the pressure of the cylindrical battery, and the insulation data of the cylindrical battery.

[0117] 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 this application, in essence, 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 of the various embodiments of this application. 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.

[0118] On the other hand, embodiments of this application also provide a storage medium, which includes a computer program. The computer program can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the cylindrical battery thermal runaway detection method provided in the above embodiments, for example including:

[0119] During the current inspection cycle, the cylindrical batteries are inspected, and various test data of the cylindrical batteries are obtained.

[0120] The detection data is matched with each detection condition, and the target detection condition triggered by the detection data is obtained from each detection condition, so as to generate a target detection condition set based on the obtained target detection conditions.

[0121] The target detection condition set is matched with each preset detection condition set to determine the thermal runaway detection result of the cylindrical battery;

[0122] The detection data include the temperature of the cylindrical battery, the voltage of the cylindrical battery, the pressure of the cylindrical battery, and the insulation data of the cylindrical battery.

[0123] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0124] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0125] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application 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. Such 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 this application.

Claims

1. A method for detecting thermal runaway in a cylindrical battery, characterized in that, include: During the current inspection cycle, the cylindrical batteries are inspected, and various test data of the cylindrical batteries are obtained. The detection data is matched with each detection condition, and the target detection condition triggered by the detection data is obtained from each detection condition, so as to generate a target detection condition set based on the obtained target detection conditions. The target detection condition set is matched with each preset detection condition set to determine the thermal runaway detection result of the cylindrical battery; The detection data include the temperature of the cylindrical battery, the voltage of the cylindrical battery, the pressure of the cylindrical battery, and the insulation data of the cylindrical battery. If the target detection conditions in the target detection condition set contain insulation faults, the duration of the current inspection cycle is increased.

2. The method for detecting thermal runaway of a cylindrical battery according to claim 1, characterized in that, During the current inspection cycle, the cylindrical batteries will be inspected, including: The voltage of the cylindrical battery is determined to be within a preset voltage range, and the cylindrical battery is inspected within the current inspection cycle.

3. The method for detecting thermal runaway of a cylindrical battery according to claim 1 or 2, characterized in that, Also includes: If the target detection condition is triggered within the current inspection cycle and the thermal runaway detection result of the cylindrical battery is not out of control, the duration of the current inspection cycle is extended to a first duration.

4. The method for detecting thermal runaway of a cylindrical battery according to claim 3, characterized in that, Determining that the target detection condition is triggered within the current inspection cycle, and extending the duration of the current inspection cycle to a first duration, includes: If the target detection condition is determined to be triggered within the current inspection cycle, and the thermal runaway detection result of the cylindrical battery is not in control, then the target detection condition triggered within the current inspection cycle is detected. If the target detection condition triggered in the current inspection cycle is different from the target detection condition triggered in the previous inspection cycle, the duration of the current inspection cycle is extended to a first duration.

5. The method for detecting thermal runaway of a cylindrical battery according to claim 1, characterized in that, Also includes: If the target detection condition is triggered at the end of the current inspection cycle, and the thermal runaway detection result of the cylindrical battery is not out of control, the duration of the current inspection cycle is extended to a second duration.

6. The method for detecting thermal runaway of a cylindrical battery according to claim 1, characterized in that, Matching the target detection condition set with each preset detection condition set to determine the thermal runaway detection result of the cylindrical battery includes: If the target detection condition set is determined to be mismatched with each of the preset detection condition sets, the thermal runaway detection result of the cylindrical battery is recorded as not runaway. If a preset detection condition set is found that matches the target detection condition set, the thermal runaway detection result of the cylindrical battery is recorded as thermal runaway.

7. The method for detecting thermal runaway of a cylindrical battery according to claim 6, characterized in that, Also includes: If the thermal runaway detection result is confirmed as thermal runaway, the duration of the current inspection cycle is extended to a third duration.

8. A cylindrical battery thermal runaway detection device, characterized in that, include: The detection data acquisition module is used to inspect the cylindrical battery during the current inspection cycle and acquire various detection data of the cylindrical battery. The detection condition acquisition module is used to match the detection data with each detection condition, and obtain the target detection condition triggered by the detection data from each detection condition, so as to generate a target detection condition set based on the obtained target detection conditions. The thermal runaway detection module is used to match the target detection condition set with each preset detection condition set to determine the thermal runaway detection result of the cylindrical battery. The detection data include the temperature of the cylindrical battery, the voltage of the cylindrical battery, the pressure of the cylindrical battery, and the insulation data of the cylindrical battery. The thermal runaway detection module is also used for: If the target detection conditions in the target detection condition set contain insulation faults, the duration of the current inspection cycle is increased.

9. An electronic device comprising a processor and a memory storing a computer program, characterized in that, When the processor executes the computer program, it implements the cylindrical battery thermal runaway detection method according to any one of claims 1 to 7.

10. 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 cylindrical battery thermal runaway detection method according to any one of claims 1 to 7.

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