The present invention relates to a method for operating a battery pack system with a plurality of battery pack modules connected in parallel for an electric vehicle. A rated current is specified for each battery pack module; for each battery pack module, the working current is calculated according to the specified rated current; a sensor current of each battery pack module is measured by the current sensor assigned to the battery pack module; and the measured sensor currents of multiple battery pack modules are compared with each other. When the lowest sensor current in the measured sensor currents deviates from at least one sensor current of other battery pack modules by at least the threshold value, the steps are implemented: comparing the operating current of the battery module with thelowest sensor current with the lowest sensor current; and, when the operating current deviates from the minimum sensor current by a limit value at most, recognizing that there is a fault in the battery module with the lowest sensor current. The invention also relates to a battery pack system of an electric vehicle, which is set up to implement the method according to the invention.

    本发明涉及运行电动车辆的具有多个并联的电池组模块的电池组系统的方法,其中向每个电池组模块规定额定电流;对每个电池组模块,根据规定额定电流计算工作电流;流经每个电池组模块的传感器电流分别由分配给电池组模块的电流传感器测量;将多个电池组模块的所测量传感器电流彼此比较;其中当所测量传感器电流中最低传感器电流与其它电池组模块的至少一个传感器电流至少偏差了阈值时,实施步骤:将具有最低传感器电流的电池组模块的工作电流与所述最低传感器电流比较;当工作电流与所述最低传感器电流至多偏差了极限值时,识别出在具有最低传感器电流的电池组模块中有故障。本发明也涉及电动车辆的电池组系统,其设立用于实施按照本发明的方法。


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    Title :

    Battery pack system and method for operating battery pack system


    Additional title:

    电池组系统和用于运行电池组系统的方法


    Contributors:
    DEMIR OZAN (author) / WOLL CHRISTOPH (author)

    Publication date :

    2020-07-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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