The invention relates to a limping control method of an electric automobile, which comprises the following steps that: when a high-voltage interlocking fault occurs, a vehicle control unit judges whether the connection of a high-voltage loop is effective or not by detecting the voltage values of a main drive high-voltage loop and an auxiliary drive high-voltage loop, judges the intention of a driver by judging whether a danger alarm flash lamp (double-flash signal) is enabled or not, and controls the limping of the electric automobile under the condition of ensuring safety; the VCU enables the vehicle to enter the fault driving mode in the mode of limiting the vehicle speed and the limiting torque, and therefore inconvenience caused by the fact that the vehicle cannot be driven due to high-voltage interlocking misinformation is avoided.
本发明涉及一种电动汽车的跛行控制方法,是在高压互锁故障发生时,整车控制器通过检测主驱、辅驱高压回路电压值判断高压回路连接是否有效,通过危险报警闪光灯(双闪信号)是否使能判断驾驶员意图,在保证安全的情况下,VCU通过限值车速、限值扭矩的形式使车辆进入故障行车模式,从而避免高压互锁误报导致无法行车带来的不便。
Limp control method for electric automobile
一种电动汽车的跛行控制方法
2022-05-17
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion |
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