The invention provides a battery self-discharge abnormity detection method and device, electronic equipment and a storage medium. The method comprises the steps of judging whether a target vehicle meets an equalization starting condition of a battery management system or not based on a battery pack internal pressure difference parameter and a battery pack capacity parameter in target vehicle data corresponding to a current period; if not, judging whether the battery of the target vehicle has a self-discharge abnormal condition or not according to the voltage difference value change trend between the voltages of multiple battery cells in the battery pack in the target vehicle data and the highest battery cell voltage and the voltage change trend of the multiple battery cells; and if yes, determining the balance capacity value of each battery cell in each period, and judging whether the battery of the target vehicle has a self-discharge abnormal condition or not based on the consistency of the balance capacity values of the battery cells and the change trend of the balance capacity values of the battery cells. The self-discharge is detected through the balance capacity value, and the self-discharge size and the self-discharge change trend are quantified, so that the detection efficiency of the short circuit in the battery cell is improved.

    本申请提供了电池自放电异常的检测方法、装置、电子设备及存储介质,方法包括:基于当前周期相对应的目标车辆数据中的电池包内压差参数以及电池包容量参数判断目标车辆是否满足电池管理系统的均衡开启条件;若否,则通过目标车辆数据中的电池包内多个电芯电压与最高电芯电压之间的电压差值变化趋势以及多个电芯的电压变化趋势判断出目标车辆的电池是否出现自放电异常情况;若是,则确定出在每个周期内每个电芯的均衡容量值,基于每个电芯的均衡容量值的一致性以及每个电芯的均衡容量值的变化趋势判断出目标车辆的电池是否出现自放电异常情况。通过均衡容量值检测自放电,并量化自放电的大小及自放电的变化趋势,提高了电芯内短路的检测效率。


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    Title :

    Battery self-discharge abnormity detection method and device, electronic equipment and storage medium


    Additional title:

    电池自放电异常的检测方法、装置、电子设备及存储介质


    Contributors:
    ZHENG HEXING (author) / WANG YUAN (author) / YANG HONGXIN (author) / ZHANG JIANBIAO (author) / GAO PANLONG (author)

    Publication date :

    2023-07-04


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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