高温脉冲工况下钛酸锂电池热特性  

Thermal characteristics of lithium titanate battery under high temperature pulse condition

作　　者：王延宁[1] 严其艳[1] 席海亮 WANG Yanning;YAN Qiyan;XI Hailiang(School of Mechanical and Electrical Engineering,Guangdong University of Science&Technology,Dongguan Guangdong 523083,China;School of Automotive Engineering,Lanzhou Institute of Technology,Lanzhou Gansu 730050,China)

机构地区：[1]广东科技学院机电工程学院,广东东莞5230832 [2]兰州工业学院汽车工程学院,甘肃兰州730050

出　　处：《电源技术》2021年第5期615-618,共4页Chinese Journal of Power Sources

摘　　要：钛酸锂电池具有可高倍率充放电特点,常用于一些需要快速充电的场景,比如大型电化学储能装置、需快速充电的电动汽车等。为避免钛酸锂电池在高温脉冲工况下容易因表面温度升高而引起爆炸等危险情况发生,研究钛酸锂电池热行为是很有必要的。按照不同充放电倍率(0.3 C、0.6 C、1.0 C)对钛酸锂电池进行实验,对高温脉冲工况下的钛酸锂电池热行为进行实时监测,以钛酸锂电池电化学过程为基础,对其生热机理、产热功率进行定性定量研究。实验结果表明,低倍率下充电生成热功率比较高倍率下充电要低些,且强制空气冷却比自然冷却降温效果好,冷板散热冷却效果最佳。Lithium titanate battery has the characteristics of high rate charging and discharging,which is often used in some scenes that need fast charging,such as large-scale electrochemical energy storage devices,electric vehicles that need fast charging,etc.It is necessary to study the thermal behavior of lithium titanate battery in order to avoid the explosion caused by the increase of surface temperature.According to different charge discharge rates(0.3 C,0.6 C,1.0 C),the thermal behavior of lithium titanate battery under high temperature pulse condition was monitored in real time.Based on the electrochemical process of lithium titanate battery,the heat generation mechanism and heat generation power were studied qualitatively and quantitatively.The experimental results show that the thermal power generated by charging at low rate is lower than that at high rate,and the cooling effect of forced air cooling is better than that of natural cooling,and the cooling effect of cooling plate is the best.

关 键 词：高温脉冲 钛酸锂电池 热行为 热功率 

分 类 号：TM912[电气工程—电力电子与电力传动]