关键词: 新能源汽车；坡道起步；扭矩控制；防溜坡；防冲击

Abstract: In view of the shortcomings of the current control strategy of new energy vehicles on ramp starting that has poor effect or needs to increase costs, this paper refers to a torque control method for new energy vehicles on ramp starting. When the vehicle controller recognizes that the driver releases the brake pedal at a rate exceeding a certain rate, it applies a certain pre tightening torque in advance. This pre tightening torque is the minimum torque that the vehicle will not slide on this road slope and braking depth. When the brake pedal is released gradually, the vehicle controller calculates the target driving torque according to the braking depth. When the calculated target driving torque is greater than the pre tightening torque, the driving torque is executed according to the calculated target driving torque, effectively ensuring that the vehicle can start smoothly on the ramp without slope slipping.

Key words: New energy vehicles; Ramp start; Torque control; Anti slide slope; Anti impact