串联混合动力汽车能量管理策略研究

Research on Energy Management Strategy of Series Hybrid Electric Vehicle

本文针对当前混合动力汽车能量管理的恒温器式控制策略和功率跟随式控制策略存在的问题,介绍了基于规则的能量管理策略。首先,依据发动机的负荷特性和电池固有的充放电特性分别为它们选择运行范围,设计实验方案并分析数据;其次,根据工程经验和试验数据确定控制规则;最后,根据汽车行驶过程中的功率需求与动力电池荷电状态(SOC)控制发动机、动力电池和电动机的工作。试验结果表明,基于规则的能量管理策略能够高效运行,从而使得整车的效率得以提高。

Aiming at the problems existing in the thermostat control strategy and power following control strategy of automobile energy management,this paper introduces a rule-based energy management strategy.Firstly,according to the load characteristics of the engine and the inherent charge and discharge characteristics of the battery,the operation range is selected for them respectively the experimental plan is designed and the experimental data is analyzed.Secondly,some control rules are determined according to engineering experience and test.Finally,control the operation of the engine,power battery and motor according to the power demand and the state of charge of the power battery during the driving process.The experimental results show that the rule-based energy management strategy can operate efficiently,so as to improve the efficiency of the whole vehicle.