增程式电动汽车复合式蓄能系统能量管理策略研究

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刘耕辰a,b， 张建武a,b*

(上海交通大学a.机械与动力工程学院;b.汽车电子控制技术国家工程实验室，上海200240）

摘要： 就增程式电动汽车而言，其蓄能系统配置及能量管理策略对其自身等效燃油经济性、电池组寿命和动力性能有重要作用。本研究描述了本项目开发的搭载超级电容的增程式电动汽车复合式蓄能系统配置，开发了基于模糊逻辑的能量管理策略，并基于Matlab / Simulink仿真分析了二者协同作用下车辆表现的提升与电池组循环寿命的保护。其中，能量管理策略特别关注了加速踏板加速度信息，以更好的理解驾驶员的驾驶意图，进一步优化各蓄能部件及发电部件间的功率分配，起到预判和应对突发功率需求、保护电池组寿命的作用。仿真结果显示，车辆功率响应速度和动力性能得到提高、电池组寿命得到保护。

关键词： 能量管理； 增程式电动汽车； 复合式蓄能系统； 最优控制； 锂离子电池组循环寿命

中图分类号：  U 46文献标志码：A

Investigation of Energy Management Strategy of Range extended Electric Vehicle with Hybrid Energy Storage System

LIU Gengchena,b， ZHANG Jianwua,b

 (a.School of Mechanical Engineering; b.National Engineering Laboratory for Automotive Electronic Control Technology, Shanghai Jiaotong University, Shanghai 200240, China)

Abstract: For rangeextended electric vehicles(REEV), energy storage system (ESS) configuration and energy management strategy (EMS) play crucial roles in its fuel economy, battery cycle life and power performance. In this paper, we presented the hybrid energy storage system configuration of an experimental REEV with ultracapacitor energy buffer, developed the corresponding optimal energy management strategy based on fuzzy control, and studied their combined effect in improving system performance and battery cycle life using Matlab/Simulink simulations. The energy management strategy paid special attention to accelerator pedal acceleration, which reflects the driver's driving intention, to further optimize energy split between different energy storage components. As a result, sudden power demands are better met and lithiumion battery is better protected from sudden high current discharges. Simulation results showed that by introducing a buffered hybrid energy storage system, vehicle instant power response is improved and Liion battery life is protected.

Key words: energy management; rangeextended electric vehicle; hybrid energy storage system; optimal control; lithiumion battery cycle life

收稿日期：20160406

基金项目： 山东省科技重大专项目（编号2015DXX0601C01）.

作者简介： 刘耕辰（1984—），男，博士研究生.*通信联系人.

文章编号：16726987（2016）03032207； DOI： 10.16351/j.16726987.2016.03.016