The invention discloses a high-voltage discharge method and device, a vehicle control unit and a new energy electric vehicle. The method comprises the following steps: detecting whether a control switch of a power battery is switched off or not; when it is detected that the control switch of the power battery is switched off, detecting whether a motor controller and/or a driving motor break down or not; and when it is detected that no fault exists, controlling the driving motor to work and controlling one or more high-voltage loads in a high-voltage loop to work at the same time via the motor controller so as to jointly discharge residual electric quantity in the high-voltage loop of the new energy electric vehicle, or when a fault is detected, controlling one or more high-voltage loads in the high-voltage loop to work. Therefore, the technical problems that timely voltage relief cannot be guaranteed and the safety is reduced in the prior art since only the driving motor is used for voltage relief, and only a voltage relief resistor is used for passive voltage relief or even voltage relief cannot be carried out once the driving motor breaks down are solved.

    本申请公开了一种高压泄放方法、装置、整车控制器及新能源电动汽车,其中,方法包括:检测动力电池的控制开关是否断开;在检测到动力电池的控制开关断开时,检测电机控制器和/或驱动电机是否故障;在检测到无故障时,利用电机控制器控制驱动电机工作的同时,控制高压回路中一个或多个高压负载工作,以共同泄放新能源电动汽车的高压回路中残余电量,在检测到故障时,控制高压回路中一个或多个高压负载工作。由此,解决了相关技术中只利用驱动电机泄压,一旦驱动电机故障,只能利用泄压电阻被动泄压,甚至无法进行泄压,导致无法保证及时泄压,降低安全性等技术问题。


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    Title :

    High-voltage discharge method and device, vehicle control unit and new energy electric vehicle


    Additional title:

    高压泄放方法、装置、整车控制器及新能源电动汽车


    Contributors:
    TAO WENYONG (author) / SHA WENHAN (author) / WANG YING (author) / QIAN ZHAOGANG (author) / WANG XIAOHUI (author) / LIU XINCHAO (author) / FANG LEI (author) / FENG ZHIMIN (author)

    Publication date :

    2021-06-18


    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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