The invention relates to the field, in particular to a battery leakage assessment method and device, a medium and a BMS system. The evaluation method comprises the following steps: acquiring charging data of a to-be-evaluated battery in two charging processes; dividing into a plurality of same charging segments; comparing all monomer voltages of the same charging segment, and determining an electric leakage monomer; calculating the electric leakage amount of the electric leakage monomer; calculating average leakage current, and evaluating the electric leakage state of the battery according to the average leakage current. According to the method, two times of charging are compared, the electric leakage amount is calculated through the difference of the two times of charging, then the average electric leakage current is calculated, and electric leakage evaluation is completed; the difference between two charging and discharging processes is compared in a fragment division mode, the comparison time is shorter compared with a traditional mode, the anti-interference performance is high, and the calculation accuracy of the electric leakage amount is higher. Compared with a traditional mode, ampere-hour integration does not need to be carried out on the whole charging process of each monomer, only voltage data at two specific moments need to be compared, and the method is simpler and more efficient.

    本发明涉及领域,特别涉及一种电池漏电评估方法、装置、介质及BMS系统。评估方法包括:获取待评估电池两次充电过程中充电数据;将划分为若干相同充电片段;比较相同充电片段的所有单体电压,确定漏电单体;计算漏电单体的漏电量;计算平均漏电流,根据平均漏电流评估电池漏电状态。本发明将两次充电作为对比,通过两次充电的差异计算漏电量,进而计算平均漏电电流,完成漏电评估;采用了划分片段的方式对比两次充、放电过程的差异,对比时间相较于传统方式更短,抗干扰性强,漏电量计算准确度更高。相较于传统方式,不需要对每个单体的充电全过程进行安时积分,只需要比较两个特定时刻的电压数据,方法更加简单高效。


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    Title :

    Battery electric leakage evaluation method and device, medium and BMS (Battery Management System)


    Additional title:

    一种电池漏电评估方法、装置、介质及BMS系统


    Contributors:
    XIE HUISI (author) / LIU JIALIN (author) / KANG YANG (author) / WU NA (author) / ZHANG JUNFENG (author)

    Publication date :

    2024-04-09


    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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