The invention relates to the technical field of electric vehicle control, in particular to a wet and slippery road surface recognition and torque control method for an electric vehicle, which specifically comprises the following steps: a vehicle body controller (BCM) detects a rainfall sensor signal in real time and transmits the rainfall sensor signal to a vehicle control unit (VCU) through a CAN bus in real time; the rainfall sensors are divided into five grades according to rainfall magnitude signals; when the vehicle is parked outdoors, the rainfall sensor can automatically wake up the BCM as long as it rains, if the whole vehicle does not have an ON electric signal at the moment, the BCM does not wake up the whole vehicle controller, and meanwhile the BCM can automatically time and calculate the raining time; after the vehicle is started, the VCU is awakened to work, and the working condition of the BCM about the raining time period is received; according to the working conditions of different rain sections, the VCU can intelligently switch the energy recovery torque MAP and the driving torque map, and the problem that at the present stage, starting of the energy recovery function of the electric vehicle is equivalent to dragging braking, the ABS function is likely to be triggered on some wet and slippery road surfaces, and vehicle safety accidents are caused is solved.
本发明涉及电动汽车控制技术领域,具体地说,本发明涉及一种电动汽车湿滑路面识别与扭矩控制方法,具体包括以下步骤:车辆车身控制器BCM实时检测雨量传感器信号并且实时通过CAN总线传递给整车控制器VCU;雨量传感器根据雨量的大小信号将其分为五个等级;当车辆停置在户外时,只要下雨雨量传感器就会自动唤醒BCM,若此时整车没有ON电信号,则BCM不会唤醒整车控制器,同时BCM会自动计时计算下雨时间;当启动车辆后,VCU会唤醒工作,接收BCM关于下雨时间段的工况;根据不同雨段的工况,VCU会智能切换能量回收扭矩MAP和驱动扭矩map,解决了现阶段电动汽车能量回收功能开启相当于拖拽制动,在一些湿滑的路面极有可能触发ABS功能,造成车辆安全事故问题。
Wet and slippery road surface recognition and torque control method for electric automobile
一种电动汽车湿滑路面识别与扭矩控制方法
2024-12-06
Patent
Electronic Resource
Chinese
IPC: | 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 / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
METHOD FOR TORQUE CONTROL OF ELECTRIC VEHICLE ON SLIPPERY ROAD SURFACE, AND TERMINAL DEVICE
European Patent Office | 2023
|TORQUE CONTROL METHOD AND APPARATUS FOR SLIPPERY ROAD SURFACE, AND TERMINAL DEVICE
European Patent Office | 2024
|TORQUE CONTROL METHOD AND APPARATUS FOR SLIPPERY ROAD SURFACE, AND TERMINAL DEVICE
European Patent Office | 2022
|Electric cart that is easy to slippery road escape and slippery road escaping method using the same
European Patent Office | 2021
|Engineering Index Backfile | 1952
|