The invention discloses a power battery fault diagnosis method and system, a vehicle and a storage medium, and the method comprises the steps: obtaining power battery data in a preset time period, the power battery data comprises terminal voltages of a plurality of single batteries, the terminal voltages of the plurality of single batteries form a voltage data cluster, and the terminal voltages of the plurality of single batteries form the voltage data cluster; the preset time period comprises a plurality of calculation moments; for each calculation moment, outlier detection is carried out on the voltage data cluster, and voltage outliers are determined; according to the voltage outlier corresponding to each calculation moment, determining the voltage outlier fault frequency of a plurality of single batteries in the power battery in a preset time period; and outputting a fault diagnosis result according to the voltage outlier fault frequency. According to the invention, the technical problems of large calculated amount and difficulty in real-time online application of a diagnosis method for the power battery in the prior art are solved.

    本发明公开了一种动力电池故障诊断方法、系统、车辆及存储介质,其中,动力电池故障诊断方法包括:获取预设时间段内的动力电池数据,其中,动力电池数据中包括多个单体电池的端电压,多个单体电池的端电压构成电压数据集群,预设时间段包括多个计算时刻;针对每个计算时刻,对电压数据集群进行离群点检测,确定电压离群点;根据每个计算时刻对应的电压离群点,确定预设时间段内动力电池中多个单体电池的电压离群故障频率;根据电压离群故障频率,输出故障诊断结果。本发明解决了现有技术中针对动力电池的诊断方法存在计算量大,难以实时在线应用的技术问题。


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    Title :

    Power battery fault diagnosis method and system, vehicle and storage medium


    Additional title:

    动力电池故障诊断方法、系统、车辆及存储介质


    Contributors:
    MA SHAODONG (author) / SUN HUANLI (author) / WANG SHUYANG (author) / PAN CHUIYU (author) / LI XUE (author)

    Publication date :

    2023-08-15


    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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