The invention relates to a slope sliding prevention control method and system for a new energy vehicle, and the method comprises the following steps: judging that the vehicle is in a slope parking condition according to the running duration of a drive motor in a set rotating speed range; when the vehicle is in a hill-holding condition and in a high-voltage state, the rotating speed of a driving motor is in a set rotating speed range, and a vehicle control unit does not receive a brake pedal opening signal and a hand brake pull-up signal, the vehicle control unit sends a motor hill-holding mode instruction to enter a hill-holding mode; in the hill-holding mode, whether the hill-holding mode is quitted or not is judged according to the absolute value of the rotating speed of the driving motor, the hand brake signal, the opening signal of the brake pedal and the magnitude relation between the request torque and the hill-holding torque. A slope sensor and a hill starting auxiliary system are replaced with a control logic mode, and the safety of the vehicle is improved in a low-cost mode.
本发明涉及一种新能源车辆的防溜坡控制方法及系统,其中的新能源车辆的防溜坡控制方法包括以下步骤:根据驱动电机在设定转速范围运行的持续时间,判断车辆处于驻坡条件;车辆处于驻坡条件且处于高压状态下,驱动电机转速处于设定转速范围内,并且整车控制器没有收到制动踏板开度信号和手刹拉起信号时,整车控制器发送电机驻坡模式指令,进入驻坡模式;驻坡模式中,分别根据驱动电机转速绝对值、手刹信号、制动踏板开度信号和请求扭矩与驻坡扭矩的大小关系判断是否退出驻坡模式。以控制逻辑的方式代替坡度传感器和坡道起步辅助系统,以低成本的方式提升车辆安全性。
Slope sliding prevention control method and system for new energy vehicle
一种新能源车辆的防溜坡控制方法及系统
2022-12-09
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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