The invention provides an electric vehicle and a method for diagnosing deterioration of a vehicle battery. When a fault occurs in a PCU (inverter) of an electric vehicle, a first map in which the temperature (TB) and current (IB) of a battery are used as parameters or a second map in which the temperature (TB) and the rate of change ([Delta] VB) of the voltage (VB) of the battery are used as parameters is used to determine whether or not rapid degradation of the battery has occurred (S12, S13). When it is determined that the rapid degradation of the storage battery has occurred, a storage battery replacement warning light is turned on (S14).

    本发明提供一种电动车辆及车辆用蓄电池的劣化诊断方法。在电动车辆的PCU(逆变器)发生了故障时,使用以蓄电池的温度(TB)和电流(IB)为参数的第一映射、或者以温度(TB)和蓄电池的电压(VB)的变化速度(ΔVB)为参数的第二映射,判定是否发生了蓄电池的快速劣化(S12、S13)。在判定为发生了蓄电池的快速劣化时,将蓄电池更换警告灯点亮(S14)。


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    Title :

    Electric vehicle and method for diagnosing deterioration of vehicle battery


    Additional title:

    电动车辆及车辆用蓄电池的劣化诊断方法


    Contributors:

    Publication date :

    2024-03-26


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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