低速电动汽车混合能源存储系统效率分析

上海交通大学学报（自然版） ›› 2012, Vol. 46 ›› Issue (08): 1304-1309.

低速电动汽车混合能源存储系统效率分析

吴志伟，张建龙，吴红杰，殷承良

（上海交通大学汽车电子控制国家工程实验室，上海 200240）

出版日期:2012-08-31 发布日期:2012-08-31

Efficiency Analysis of Hybrid Energy Storage System in Light Electric Vehicles

WU Zhi-Wei, ZHANG Jian-Long, WU Hong-Jie, YIN Cheng-Liang

(National Engineering Laboratory for Automotive Electronic Control Technology， Shanghai Jiaotong University， Shanghai 200240， China)

Online:2012-08-31 Published:2012-08-31

摘要/Abstract

摘要： 利用超级电容的高功率密度特性和磷酸铁锂电池的高能量密度特性，设计了低速电动车主动并联混合储能系统方案.采用实验方法分析磷酸铁锂电池的效率，并通过理论公式分析了双向直流功率变换器的效率.探讨了将超级电容和磷酸铁锂电池结合使用，结果发现，采用双向直流变换器的混合能量存储系统能提高效率.通过实验验证，双向直流变换器的实际效率为90.5%，接近理论公式计算得到的效率91.6%.

关键词: 超级电容, 磷酸铁锂电池, 混合储能系统, 低速电动汽车, 双向直流功率变换器

Abstract: The design of active parallel hybrid energy storage system (HESS) for light electric vehicles (LEVs) was presented by the use of high power density ultracapacitor and high energy density LiFePO4 battery. The battery efficiency was analyzed based on the experiment, and the theoretical efficiency of the bidirectional DC-DC power converter was derived. The combination of ultra-capacitor and LiFePO4 battery was discussed. The result demonstrates that the HESS with the bidirectional DC-DC power converter can improve the efficiency. The experimental result shows that the average efficiency of DC-DC is 90.5% in the HESS bench test, which is close to the theoretical efficiency 91.6%.

Key words: ultra-capacitor, LiFePO4 battery, hybrid energy storage system (HESS), light electric vehicles (LEVs), bidirectional DC-DC

中图分类号:

U 469.72

吴志伟, 张建龙, 吴红杰, 殷承良. 低速电动汽车混合能源存储系统效率分析 [J]. 上海交通大学学报（自然版）, 2012, 46(08): 1304-1309.

WU Zhi-Wei, ZHANG Jian-Long, WU Hong-Jie, YIN Cheng-Liang. Efficiency Analysis of Hybrid Energy Storage System in Light Electric Vehicles[J]. Journal of Shanghai Jiaotong University, 2012, 46(08): 1304-1309.