The invention relates to a battery pack thermal runaway detection method and system, a vehicle and a storage medium, a battery pack comprises a plurality of battery cell modules connected in parallel, and each battery cell module comprises a plurality of battery cells connected in series. The method comprises the following steps: judging whether a battery pack accords with a thermal runaway detection scene or not; under the condition of conforming to the thermal runaway detection scene, determining an abnormal battery cell with a thermal runaway risk based on the voltage change condition of each battery cell in the battery pack, and determining the confidence coefficient of a thermal runaway event of the abnormal battery cell based on the plurality of battery cell modules and the voltage change condition of the battery cells therein; determining a conditional coefficient about a thermal runaway event according to an external event associated with the abnormal cell; and determining whether a thermal runaway event occurs according to the confidence coefficient and the conditional coefficient.
本申请涉及电池包热失控检测方法和系统、车辆、存储介质,电池包中包括并联的多个电芯模组,并且每一个电芯模组包括串联的多个电芯。所述方法包括:判断电池包是否符合热失控检测场景;在符合热失控检测场景的情况下,基于电池包中的各个电芯的电压变化情况确定存在热失控风险的异常电芯,其中,基于多个电芯模组及其中电芯的电压变化情况确定异常电芯发生热失控事件的置信度;根据与异常电芯关联的外部事件确定关于热失控事件的条件系数;以及根据置信度和条件系数确定是否发生热失控事件。
Battery pack thermal runaway detection method and system, vehicle and storage medium
电池包热失控检测方法和系统、车辆、存储介质
2024-03-01
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY |
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