摘要
以210Ah聚合物锰酸锂离子电池为研究对象,在电流（10～210A）和温度（-20～50℃）范围内,分析其Peukert温度效应.对不同电流和温度区间内Peukert模型适用性进行了讨论,并辨识出对应Peukert系数.对电池关键特性即可用电量、内阻、效率特性、比能量,与Peukert效应的对应关系进行了分析.研究表明,在温度0～50℃且电流10～210 A的区间内,Peukert模型是适用的;在20～40℃范围内Peukert系数为0.995 4,表征了优良的倍率放电特性;温度为-20℃时,Peukert模型适用电流范围变窄,但仍可释放出最大可用电量的94.6％;该型电池的关键特性和Peukert效应都与温度之间存在强相关性.
The temperature effect of Peukert model of 210 Ah polymer LiMn2O4 Li-ion battery was studied with consideration of coupling influences of current （10 - 210 A） and temperature （-20 - 50 ℃）. The applicability domains of the Peukert model for different values of current and temperature were discussed and the Peukert coefficients were identified correspondingly. The relationship between the Peukert effect and battery characteristics, which consist of available capacit3; resistance, efficiencies and specific energy, were analyzed. The results show that the Peukert model is applicable to the polymer LiMn2O4 Li-ion battery from 0 - 50℃ and 10 - 210 A. The Peukert coefficient, which is 0.995 4 from 20 - 40 ℃, demonstrates the excellent discharge performance. The current range applicable to the Peukert model narrows at -20 ℃while still achieving 94.6% of the maximum capacity. There is a strong correlation between the key characteristics and Peukert effect of the Li-ion battery.
出处
《汽车工程学报》
2014年第4期274-279,共6页
Chinese Journal of Automotive Engineering
基金
国家高技术研究发展计划(863计划)(2003 AA 501100)
