The invention relates to a voltage fault judgment method and device, a storage medium, a controller and a vehicle, the method is applied to an electric vehicle, the electric vehicle comprises a motor controller and a voltage converter, and the motor controller and the voltage converter are connected to the same voltage bus in parallel. The method comprises the following steps: detecting whether the bus voltage of the motor controller is under-voltage; detecting whether the bus voltage of the voltage converter is under-voltage or not under the condition that the bus voltage of the motor controller is under-voltage; and under the condition that the bus voltage of the voltage converter is also under-voltage, judging that the motor controller is in an under-voltage fault state. According to the embodiment of the invention, the risk that the motor controller misreports an undervoltage fault can be reduced, the vehicle is prevented from losing power due to misreporting of the fault of the motor controller in the driving process, and the possibility of driving accidents is reduced.

    本公开涉及一种电压故障判断方法、装置、存储介质、控制器及车辆,所述方法应用于电动车辆,所述电动车辆包括电机控制器和电压转换器,所述电机控制器和所述电压转换器并联连接于同一条电压母线,所述方法包括:检测所述电机控制器的母线电压是否欠压;在所述电机控制器的母线电压欠压的情况下,检测所述电压转换器的母线电压是否欠压;在所述电压转换器的母线电压也欠压的情况下,判定所述电机控制器处于欠压故障状态。本公开实施例可以降低电机控制器误报欠压故障的风险,防止车辆在行驶过程中因误报电机控制器故障而失去动力,降低行车事故发生的可能性。


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    Title :

    Voltage fault judgment method and device, storage medium, controller and vehicle


    Additional title:

    电压故障判断方法、装置、存储介质、控制器及车辆


    Contributors:
    HU XUEQING (author)

    Publication date :

    2023-08-04


    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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