混合动力轻型皮卡车能量管理策略研究

A Research on Management Strategy for Hybrid Electric Light Vehicle

以优化燃油经济性为主要目标,针对单轴并联柴油发动机-电动机混合动力轻型皮卡车开发了基于逻辑门限的能量管理策略。根据柴油机的万有特性图对需求扭矩设置了上、下门限参数,并对电池SOC设置了门限,尽可能保证发动机和电动机同时工作在高效率区域内,并对此策略进行了仿真和台架试验。结果表明:该控制策略能使转矩合理分配,并使电池的电荷状态处于平衡,优化了发动机的工作点,提高了整车的燃油经济性。经多次循环试验,得出该策略可使配套车辆节油约14.73%,排放达到国5标准。

In order to optimize fuel economy,an energy management strategy based on logical threshold is developed for the singleshaft parallel Hybrid Electric Light Vehicle（PHELV）.Combined with the universal characteristic diagram of diesel engine,the upper and lower threshold parameters of demand torque are set up,and the threshold for the battery SOC is set,to make the engine and the motor operate in high efficiency areas at the same time.The relevant simulation experiment and bench test are carried out.The results indicate that the management strategy can reasonably assign the required torques,and results in a balance of battery SOC,the working points of engine is optimized and the fuel economy of vehicle is improved.After repeated cycle tests,the results show that the matching vehicle fuel save 14.8%,and emissions reach the stage V emission regulation.