The invention relates to a thermal runaway early warning method and device for a vehicle battery, equipment and a storage medium. The early warning method comprises the steps that the temperature of the vehicle battery in the sampling duration is acquired; obtaining the weight of the temperature according to the temperature, and obtaining an entropy value according to the weight; obtaining an entropy weight according to the entropy value; obtaining a first evaluation parameter according to the weight and the entropy weight; and according to the change trend of the first evaluation parameter of each temperature acquisition point, judging whether each temperature acquisition point has a temperature anomaly condition, and if so, judging that the vehicle battery has a risk of thermal runaway. According to the method, the first evaluation parameter is set through the single parameter of the obtained temperature data, so that the change trend of the temperature is obtained, whether the vehicle battery has the risk of thermal runaway or not is accurately evaluated, and the accuracy and sensitivity of thermal runaway early warning of the vehicle battery can be ensured while energy consumption is reduced.

    本申请涉及一种车辆电池的热失控预警方法、装置、设备和存储介质,预警方法包括:获取车辆电池在采样时长内的温度;根据所述温度获取所述温度的权重,并根据所述权重获取熵值;根据所述熵值获取熵权;根据所述权重以及所述熵权获取第一评价参数;根据每个所述温度采集点的所述第一评价参数的变化趋势,判断每个所述温度采集点是否存在温度异常的情况,若是,则判断所述车辆电池存在热失控的风险。本申请通过获取得到的温度数据这一单一参数设定第一评价参数,以获得温度的变化趋势,进而以准确评价车辆电池是否存在热失控的风险,可以在降低能耗的同时保证对车辆电池进行热失控预警的准确性和灵敏度。


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    Titel :

    Thermal runaway early warning method, device and equipment for vehicle battery and storage medium


    Weitere Titelangaben:

    车辆电池的热失控预警方法、装置、设备和存储介质


    Beteiligte:
    LI YUNLONG (Autor:in) / GUO SHENGCHANG (Autor:in) / YUE HONGYA (Autor:in) / SUN SHI (Autor:in) / ZHOU QIANLONG (Autor:in) / TAO XIAOBO (Autor:in)

    Erscheinungsdatum :

    11.11.2022


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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