The invention relates to a method for operating a battery system. The battery system includes parallel-connected branches. Each branch includes at least one battery module. In the at least one battery module, multiple battery cells are interconnected in a series connection and/or in a parallel connection. The branches are switchable on and off from one another. The individual battery cells and/or individual battery cell packets which each include multiple battery cells interconnected in parallel are switchable on and off from one another and are bypass-able. The method includes: recognizing a fault of a battery cell; switching off and bypassing the faulty battery cell and/or the faulty battery cell packet which includes the faulty battery cell; switching off the faulty branch, which includes the faulty battery cell and/or the faulty battery cell packet; comparing the branch voltage of the faulty branch with the branch voltage of intact branches, in which no fault was recognized; discharging the intact branches if voltage differences between the branches exceed a voltage threshold value.

    本发明涉及用于运行电池系统的方法。电池系统在此包括多个分别具有至少一个电池模块的彼此并联连接的支路。在至少一个电池模块中多个电池单池以串联电路和/或并联电路连接。支路在此能彼此接通且切断。各个电池单池和/或分别包括多个并联连接的电池单池的各个电池单池组在此能彼此接通且切断且跨接。方法至少包括下述方法步骤:识别电池单池的故障;切断和跨接有故障的电池单池和/或有故障的电池单池所处的有故障的电池单池组;切断具有有故障的电池单池和/或有故障的电池单池组的有故障的支路;比较有故障的支路的支路电压与各自的功能正常的支路的支路电压,其中未识别到故障;当支路之间的电压差超过电压阈值时,使功能正常的支路放电。


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    Title :

    Method for operating battery system


    Additional title:

    用于运行电池系统的方法


    Contributors:

    Publication date :

    2022-02-18


    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 / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung



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