电动汽车用锂离子电池组温度均匀性试验研究  

Thermal Uniformity and Enhanced Thermal Transfer of Rectangular Lithium-ion Power Batteries

作　　者：林春景[1] 许思传[1] 常国峰[1] 蔡飞龙[1] 

机构地区：[1]同济大学

出　　处：《汽车技术》2014年第10期55-58,共4页Automobile Technology

基　　金：国家"973"高科技资助项目(2011CB711203);上海市科学技术委员会资助(11DZ2260400)

摘　　要：以电动汽车用方形磷酸铁锂电池为研究对象,通过分析恒流放电过程中有/无高导热石墨片的电池单体表面以及电池模块不同位置间温差的变化情况,研究了高导热石墨片对提高锂离子电池温度均匀性的作用。试验结果表明,高导热石墨片作为强化传热措施,能够有效提高电池单体表面以及电池模块内部的热均匀性,进而提高电动汽车用动力电池热管理系统的性能。In this paper, we take the rectangular LiFePO4 batteries for EV as the research object to study the effect of high conductive graphite sheets on the temperature uniformity in lithium-ion battery packs through comparing temperature difference changes on battery cell surface and between different cells with or without graphite sheets in the process of constant-current discharge. Experiment result shows that this high conductive graphite sheets, as the enhanced heat transfer method, can effectively increase the thermal uniformity on cell surfaces and between different cells, which means that it is helpful to enhance the performance of thermal management system（TMS） for battery packs in battery electric vehicle（BEV）.

关 键 词：锂离子电池 温度均匀性 强化传热 高导热石墨片 

分 类 号：U463.6[机械工程—车辆工程]