The invention discloses a power battery abnormity identification and early warning method. The method comprises the following steps: acquiring voltage data of each battery monomer in a charging state of a vehicle power battery in a battery swap station; performing line data cleaning processing; obtaining a current sliding window and parameters of a box chart of each type of monitoring data corresponding to the current sliding window; calculating to obtain each type of monitoring data of each battery cell in the current sliding window; comparing with the upper and lower limit values of the corresponding box chart; if the comparison result is that at least one type of monitoring value of the battery list in the current sliding window exceeds the upper limit value and the lower limit value of the corresponding box diagram, early warning processing is carried out; otherwise, moving the sliding window by a sliding step length, and continuing calculation, comparison and judgment until the charging process of the power battery is completed. The invention also discloses a corresponding system and a battery swap station. According to the invention, abnormal detection can be rapidly and accurately carried out on the voltage of the on-line power battery, and safety early warning can be carried out.

    本发明公开了一种动力电池异常识别预警方法包括:采集换电站内车辆动力电池充电状态下各个电池单体的电压数据;行数据清洗处理;获得当前滑动窗口以及当前滑动窗口所对应的每类监控数据的箱形图的参数;计算获得当前滑动窗口内的每一电池单体的每一类监控数据;与对应的箱形图的上下限值进行比较;如果比较结果为当前滑动窗口中存在电池单的至少一类监控数值超出对应的箱形图的上下限值,则进行预警处理;否则,将滑动窗口移动一个滑动步长,继续进行计算比较判断,直至完成动力电池充电过程。本发明还公开了相应的系统以及换电站。实施本发明,快速且准确地对在线动力电池的电压进行异常检测,并进行安全预警。


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    Title :

    Abnormity recognition and early warning method and system during charging of power battery and battery swap station


    Additional title:

    一种动力电池充电时异常识别预警方法、系统及换电站


    Contributors:
    HE SHAN (author) / ZHAO YUMING (author) / LI YAN (author) / DU JINQIAO (author) / LEI NANLIN (author)

    Publication date :

    2022-11-15


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung



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