| 低速电动汽车混合能源存储系统效率分析 |
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| 引用本文： | 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,2012,46(8):1304-1309. |
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| 作者姓名： | 吴志伟 张建龙 吴红杰 殷承良 |
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| 作者单位： | （上海交通大学 汽车电子控制国家工程实验室，上海 200240） |
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| 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%.
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| 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 |
Efficiency Analysis of Hybrid Energy Storage System in Light Electric Vehicles |
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| 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(8):1304-1309. |
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| Authors: | WU Zhi-wei ZHANG Jian-long WU Hong-jie YIN Cheng-liang |
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| Institution: | (National Engineering Laboratory for Automotive Electronic Control Technology， Shanghai Jiaotong University， Shanghai 200240， China) |
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| 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%. |
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| Keywords: | ultra-capacitor LiFePO4 battery hybrid energy storage system (HESS) light electric vehicles (LEVs) bidirectional DC-DC |
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