纯电动乘用车再生制动系统控制策略研究

A research of control strategy for regenerative braking system of pure electric passenger vehicle

针对电动汽车再生制动系统安全存在风险与经济性较差的现实问题,对电动汽车制动系统法规的要求、车辆动力学等进行研究,提出了一种基于制动法规要求的纯电动乘用车再生制动系统控制策略,根据制动强度的不同,对前后轴制动力进行分配,并且尽可能多地将制动力分配到驱动轮上,使用再生制动系统进行制动,这样就可以在保证制动安全性的同时,最大程度的回收再生电动汽车的制动能量,利用ADVISOR2002仿真平台,对电动汽车进行动力学仿真,并且利用实验室的轮毂台架进行实车测试。试验结果表明:该再生制动系统控制策略在ECE工况下续驶里程贡献率超过32%,在保证制动安全性的同时,提高了车辆的经济性。

In order to solve the problems of safety risk and poor economy of the electric vehicle,the braking regulation and vehicle dynamics were investigated. After the analysis of the braking regulation and vehicle dynamics,a control strategy for regenerative braking system of pure electric passenger vehicle was established,according to the different braking strength value,braking force distribution control strategy was carried out to allocate more braking force to the drive shaft to use the regenerative braking system as much as possible,so the method was presented to secure the safety of the braking system and regenerate the maximum energy in the braking process of electric vehicle,ADVISOR2002 simulation platform was used for vehicle dynamics,and a real car test was carried out on the chassis dynamometer in the laboratory. The experiment result showed that contribution rate for electric range is more than 32% in the ECE test cycle,the brake safety is secured,and the economy of the pure electric passenger vehicle is improved.