基于CPS的新型电动汽车液压再生制动能量回收系统研究

摘要

In order to improve efficiency of recovering braking energy in electrical vehicle, a constant pressure hydraulic regenerative braking system with flywheel has been designed after comparing several hydraulic regenerative braking schemes. Then the joint braking and CEC-15 driving condition simulation based are processed. The results of simulation indicate positive correlation between displacement of pump/motor and efficiency of energy recovering under a certain value of displacement and driving range of electrical has been prolonged by 24%.%针对纯电动汽车能量利用率低的问题，提出对电动汽车进行制动能量回收，通过比较多种液压制动能量回收方案与储能方式，认为定压源飞轮液压再生制动系统较合理，且对该系统分别进行汽车联合制动工况和城市循环工况仿真，分析系统制动能量回收利用率和节能效果，仿真结果显示，泵/马达排量在一定范围内，制动能量回收效率与排量大小呈正相关，续驶里程能提高24%左右。