温度对LiFePO_4锂离子动力电池的影响  

Influence of temperature on LiFePO_4 Li-ion power battery

作　　者：桂长清[1] 

机构地区：[1]中国船舶重工集团公司第712研究所,湖北武汉430064

出　　处：《电池》2011年第2期88-91,共4页Battery Bimonthly

摘　　要：磷酸铁锂(LiFePO4)锂离子电池的性能受环境温度的影响较大,在环境温度低于0℃时,电池的内阻迅速增加,比能量和比功率迅速下降,电动汽车的起动性能受到影响。为了使电池组能正常运行,需要采取保温措施。由于LiFePO4锂离子电池的内阻较高,电池组运行时温度升高,为保证安全运行,要提供冷却系统。The performance of lithium iron phosphate（LiFePO4） Li-ion battery was influenced obviously by ambient temperature.When ambient temperature was lower than 0 ℃,the internal resistance of the battery increased rapidly,the specific energy and specific power decreased rapidly,the start performance of electrical vehicle would be effected.In order to make battery group operating normally,it was necessary to assemble a thermal barrier.The internal resistance of LiFePO4 Li-ion battery was higher,which would make internal temperature of battery group being higher during working.In order to guarantee the safety operating,the cooling system would be necessary.

关 键 词：动力电池 锂离子电池 放电容量 内阻 比能量 比功率 

分 类 号：TM912.9[电气工程—电力电子与电力传动]