电缓速控制系统、控制方法及纯电动汽车
By coordinating the vehicle controller and the electronic braking system and utilizing the dynamic torque distribution of the motor controller, the problems of brake pedal free travel and abrupt intervention of air brake caused by electric brake saturation under electric retarding function are solved, achieving a smooth transition of braking force and improving the driving experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HUNAN CSR TIMES ELECTRIC VEHICLE
- Filing Date
- 2025-09-03
- Publication Date
- 2026-07-17
AI Technical Summary
When the electric retarder function is activated and the motor braking capacity is close to its limit, the driver may experience a feeling of free travel in the brake pedal due to the saturation of the electric braking system, followed by a sudden increase in braking force caused by the abrupt intervention of the air brake.
The vehicle controller calculates the target deceleration in real time, and utilizes the external braking request function of the electronic braking system and the dynamic torque distribution of the motor controller to reserve electric braking capacity to form a smooth braking force rise curve before the air pressure braking intervenes, thus eliminating the braking force step phenomenon.
It achieves a smooth transition between electric braking and air braking, significantly improving driving smoothness and handling experience, and avoiding problems such as brake pedal free travel and abrupt changes in braking force.
Smart Images
Figure CN121179992B_ABST