The embodiment of the invention provides an insulation fault detection method and device, a whole vehicle high-voltage loop and an electric vehicle, and relates to the field of vehicle engineering. The method is applied to a whole vehicle controller in a whole vehicle high-voltage loop, and the whole vehicle high-voltage loop further comprises a compressor, a first relay, a second relay and a power distribution device. According to the method, a first relay and a second relay are added to a positive electrode and a negative electrode of a compressor respectively, when a whole vehicle controller learns that a whole vehicle high-voltage loop has an insulation fault, the first relay and the second relay are controlled to be disconnected firstly so as to move the compressor out of the whole vehicle high-voltage loop, and then whether the whole vehicle high-voltage loop returns to a normal state or not is judged; if the whole vehicle high-voltage loop returns to the normal state, it is determined that the compressor has an insulation fault; if the whole vehicle high-voltage loop is still in the insulation fault state, it is determined that the compressor does not have the insulation fault, and therefore the insulation fault detection precision is improved.

    本发明的实施例提供了绝缘故障检测方法、装置、整车高压回路及电动汽车,涉及车辆工程领域。该方法应用于整车高压回路中的整车控制器,整车高压回路还包括:压缩机、第一继电器、第二继电器和配电装置。该方法在压缩机的正极和负极分别增加第一继电器和第二继电器,当整车控制器获悉整车高压回路发生绝缘故障时,首先控制第一继电器和第二继电器断开,以将压缩机移出整车高压回路,然后判断整车高压回路是否恢复正常状态,若整车高压回路恢复正常状态,则确定压缩机发生绝缘故障;若整车高压回路仍处于绝缘故障状态,则确定压缩机未发生绝缘故障,从而提高了绝缘故障检测的精度。


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    Title :

    Insulation fault detection method and device, finished automobile high-voltage loop and electric automobile


    Additional title:

    绝缘故障检测方法、装置、整车高压回路及电动汽车


    Contributors:
    LIU YUN (author)

    Publication date :

    2022-03-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES



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