插电式混合动力汽车车载复合电源功率分配策略研究

将原有插电式混合动力汽车单一电源系统改造成复合电源系统，根据整车性能要 求及所用循环工况对车载电源的能量和功率需求解耦，完成动力电池和超级电容的参数匹配； 在Matlab/simulink 中建立复合电源功率分配策略，仿真结果表明，采用复合电源能减少动力电 池循环充电次数，有效避免大电流对动力电池的冲击，充分发挥超级电容的高比功率特性，与 改造前相比，燃油经济性提高3.4%，纯电动行驶里程增加1.3%。

The Power Allocation Strategy for Plug-in Hybrid ElectricVehicle Hybrid Power System

According to the vehicle performance requirements and driving cycle, the original single power system of a plug-in hybrid electric vehicle is transformed into hybrid power system which is consist of battery and super-capacitor that are matched by decoupling the requirement of energy and power. The power allocation strategy of hybrid power is built in Matlab/simulink. The simulation results show that the hybrid power system can reduce the battery charge cycles, effectively avoid the impact of battery from the large current and can give full play to high power characteristics of super-capacitor. Comparing with the former, the fuel economy and pure electric mileage are increased by 3.4% and 1.3%.