The invention relates to an electric vehicle and a brake control method thereof, and belongs to the technical field of brake control of pure electric vehicles and hybrid new energy vehicles. According to the method, the current vehicle speed and the current pedal opening degree of the electric vehicle are obtained, the target deceleration corresponding to the current vehicle speed and the current pedal opening degree is extracted according to the corresponding relation among the pedal opening degree, the vehicle speed and the target deceleration which are obtained in advance, and the target deceleration serves as the control target of braking control. And then calculating the vehicle sliding resistance according to the current vehicle speed, calculating the required braking torque according to the vehicle sliding resistance and the target deceleration value, and controlling the driving motor to output the required braking torque. By the adoption of the method and device, the target deceleration serves as the braking control target, the required braking torque output by the driving motor is adjusted in a self-adaptive mode, the driving motor outputs the required braking torque, and the driving feeling is optimized.
本发明涉及一种电动汽车及其制动控制方法,属于纯电动车和混动新能源车的制动控制技术领域。通过获取电动汽车的当前车速和当前踏板的开度,根据预先获取的踏板开度、车速与目标减速度之间的对应关系,提取出对应当前车速和当前踏板开度的目标减速度,将目标减速度作为制动控制的控制目标,然后根据当前车速计算车辆滑行阻力,并根据车辆滑行阻力和目标减速度值,计算需求制动扭矩,控制驱动电机输出需求制动扭矩。采用本发明,通过将目标减速度作为制动控制目标,自适应调整请求驱动电机输出的需求制动扭矩,驱动电机采用需求制动扭矩输出,优化了驾驶感受。
Electric automobile and brake control method thereof
一种电动汽车及其制动控制方法
2023-06-13
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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