基于Peukert模型的车用纳米磷酸铁锂电池性能研究  

Performance Study of Lithium-Ion Battery with NanoLiFePO_4 for Electric Vehicles Based on Peukert's Equation

作　　者：张宾[1] 谢永才[2] 崔忠彬[3] 

机构地区：[1]中国人民解放军93593部队 [2]中国人民解放军93507部队 [3]中国人民解放军93792部队

出　　处：《汽车工程学报》2015年第6期415-420,共6页Chinese Journal of Automotive Engineering

基　　金：国家高技术研究发展计划(863计划)(2003AA501100)

摘　　要：以纳米Li Fe PO4锂离子电池为研究对象,在50--450 A和-18~50℃范围内,对其充放电特性、Peukert模型与温度的关系进行了讨论,利用Ragone曲线对阀控式密封铅酸动力电池、镍氢动力电池及锰酸锂离子电池的能量功率特性进行了对比分析。研究表明,该纳米Li Fe PO4锂离子电池的快速放电能力和能量功率特性都得到很大改善,尤其适合于高温工况;低温性能依然还是纳米Li Fe PO4锂离子电池的弱点,亟待进一步提高。In tile range of 50 -- 450 A and -18 -- 50 ℃, the paper investigated the discharge characteristics of the lithiurn-ion battery with nano-tiFePO4 and discussed the relation between Peukert＇s equation and temperature. The capacity resistance, and efficiency of the battery were studied as well. A Ragone plot was used to analyze the relationship between energy and power of the lithium-ion battery with nano-LiFePO4, and to compare the power pertbrmance of the battery with VRLA battery NiMH battery and LiMn,O4 lithium-ion battery. The results show that for high temperature conditions, the lithium-ion battery with nano-LiFePO4 has better power performance, including more rapid discharging and better energy and power capability However, its low-temperature pertbrmances need to be further promoted.

关 键 词：电动汽车 锂离子电池 纳米磷酸铁锂 温度 Peukert 

分 类 号：TM912.9[电气工程—电力电子与电力传动]