The invention relates to a short circuit early warning method and device in a battery system, a medium, a vehicle-mounted system and a vehicle, and the method comprises the steps: obtaining the maximum voltage of a single battery and the minimum voltage of a single battery at the same moment; obtaining the temperature of the single battery with the minimum voltage; obtaining the temperature of the temperature field where the single battery with the minimum voltage is located; and based on the maximum voltage of the single battery, the minimum voltage of the single battery, the temperature of the single battery and the temperature of a temperature field, judging whether the internal short circuit exists in a battery system. Therefore, the method is realized based on the voltage and temperature of the battery system in the working process and the temperature of the temperature field, can be suitable for various working conditions, and by introducing the temperature of the temperature field into the method, the influence of the temperature change of the temperature field where the battery system is located on internal short circuit identification and early warning is avoided, the false alarm probability is reduced, the short circuit of a battery cell in the battery system can be early warned in advance easily, and the accuracy of early warning of the short circuit in the battery can be improved.

    本公开涉及电池系统内短路预警方法、装置、介质、车载系统和车辆,该方法包括:在同一时刻下,获取单体电池最大电压和单体电池最小电压;获取单体电池最小电压的单体电池的温度;获取单体电池最小电压的单体电池所处温度场的温度;基于单体电池最大电压、单体电池最小电压、单体电池的温度和温度场的温度,判断电池系统是否存在内短路。如此,基于电池系统工作过程中的自身电压、温度及其温度场的温度实现,可适用于多种工况中,且通过将温度场的温度引入该方法中,避免了电池系统所处温度场的温度变化对内短路识别和预警的影响,降低了误报概率,可以较容易地对电池系统内的电芯短路做出提前预警,且可以提高对电池内短路进行预警的准确性。


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    Title :

    Short circuit early warning method and device in battery system, medium, vehicle-mounted system and vehicle


    Additional title:

    电池系统内短路预警方法、装置、介质、车载系统和车辆


    Contributors:
    YANG JIAN (author) / LIU ZHIMIN (author) / LIU RONGFU (author)

    Publication date :

    2021-06-04


    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



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