热特性方法在动力电池快充性能研究中的应用  

Application of thermal characteristics method in study of rapid charging performance of batteries

作　　者：刘磊[1] 王芳[1] 樊彬[1] 何兴[1] 任山[1] LIU Lei;WANG Fang;FAN Bin;HE Xing;REN Shan(China Automotive Technology and Research Center,Tianjin 300300,China)

机构地区：[1]中国汽车技术研究中心,天津300300

出　　处：《电源技术》2018年第3期365-366,372,共3页Chinese Journal of Power Sources

摘　　要：提出了使用热特性研究的方法研究动力电池快速充电性能。对比了不同充电方法下电压曲线的不同,发现充电电流越大,电池极化越严重,当在恒流充电中添加间歇或者反向脉冲时,能够一定程度上降低电池极化。使用加速绝热量热仪研究了不同充电方法下电池的温升情况,发现温升曲线能够比电压曲线更清晰地反映出不同充电方法的差异。电池的极化以及副反应的热效应都能够反映在电池充电过程中的温升曲线以及放热速率曲线中。The thermal characteristics method was applied to study the rapid charging performance of batteries.It's found that the polarization becomes more serious with the current increase by comparing the different voltage curves under different charging methods.The intermittent or reverse pulse in the charging process could reduce the polarization.Accelerating rate calorimetry(ARC)was used to study the thermal characteristics under different charging methods.The temperature rise curves could more clearly reflect the differences of different charging methods than the different voltage curves.The thermal performance curves contain the information of polarization and the side reactions,which exactly influence the performance and cycle life of batteries.

关 键 词：动力电池 加速绝热量热仪 快速充电 热特性 

分 类 号：TM911.16[电气工程—电力电子与电力传动]