The invention provides an electric vehicle discharging control method, a vehicle control unit and an electric vehicle. The electric vehicle discharging control method comprises the steps: when the electric vehicle is powered off at high voltage, sending a work stopping instruction to a high-voltage controller of the electric vehicle; after the high-voltage controller stops working, controlling a power battery to stop supplying power to the high-voltage circuit; after the power battery stops supplying power to the high-voltage circuit, sending a discharging instruction to a DC power supply voltage converter DCDC; and enabling the DC power supply voltage converter DCDC to perform discharging through a bus capacitor DC-Link according to the discharging instruction. According to the electric vehicle discharging control method, the design of a discharging control circuit or a discharging resistor is omitted, the cost of the whole vehicle is reduced, meanwhile, the electric energy of the bus capacitor DC-Link is converted into the electric energy of the low-voltage storage battery, and the electric energy of the whole vehicle is saved.
本发明提供了一种电动汽车放电控制方法、整车控制器及电动汽车。该电动汽车放电控制方法包括,电动汽车高压下电时,向所述电动汽车的高压控制器发送停止工作指令;在所述高压控制器停止工作后,控制动力电池停止对高压电路供电;在动力电池停止对高压电路供电后,向直流电源电压变换器DCDC发送放电指令;所述直流电源电压变换器DCDC根据所述放电指令,通过母线电容DC‑Link进行放电。本发明实施例的电动汽车放电控制方法节省了放电控制电路或放电电阻的设计,减少了整车的成本,同时又将母线电容DC‑Link的电能转化为低压蓄电池的电能,节约了整车电能。
Electric vehicle discharging control method, vehicle control unit and electric vehicle
一种电动汽车放电控制方法、整车控制器及电动汽车
2021-11-30
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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