基于浸没冷却的锂离子电池热管理性能研究  

Research on thermal management performance of Li-ion battery based on immersion cooling

作　　者：王国阳 赵路遥 孔庆红 张思雨 陈明毅 WANG Guoyang;ZHAO Luyao;KONG Qinghong;ZHANG Siyu;CHEN Mingyi(School of Environment and Safety Engineering,Jiangsu University,Zhenjiang Jiangsu 212013,China)

机构地区：[1]江苏大学环境与安全工程学院,江苏镇江212013

出　　处：《电源技术》2022年第4期408-411,共4页Chinese Journal of Power Sources

基　　金：应急管理部消防救援局科技计划(2020XFCX33);中国博士后科学基金资助项目(2020M681512);火灾科学国家重点实验室开放课题(HZ2020-KF08)。

摘　　要：锂离子电池热管理系统是控制其在合理温度范围内工作的重要手段,其中浸没冷却是十分有效的锂电池热管理方式。开展了不同绝缘冷却液和不同充放电倍率下18650型锂离子电池浸没冷却热管理的实验研究。详细分析了浸没冷却对锂离子电池表面最高温度、表面温度均匀性及各项电学性能的影响。研究结果表明,三种绝缘冷却液都有较好的降温效果。其中变压器油对锂离子电池浸没冷却效果显著,在2 C充放电循环中可将最高温度控制在38.8℃,最高温度下降29.2℃,降温幅度达到42.9%,表面温度差异可控制在2℃以内。浸没冷却使温度大幅下降的同时会伴随有充放电时间的缩短和总容量的下降。Lithium-ion battery thermal management system is an important means to control its work within a reasonable temperature range.The immersion cooling is a very effective way of thermal management for lithium batteries.This paper carried out an experimental study on the immersion cooling heat management of the ternary 18650 lithium-ion battery under different insulating coolants and different charge-discharge rates.The effects of immersion cooling on the maximum surface temperature,surface temperature uniformity and various electrical properties of lithium-ion batteries were analyzed in detail.The results show that the three kinds of insulation coolant have good cooling effect.The maximum temperature can be controlled at 38.8℃at 2 C charge-discharge cycles.The maximum temperature drops by 29.2℃,and the cooling range reaches 42.9%.The surface temperature difference can be controlled within 2℃.The submersion cooling causes the temperature to drop significantly,which is accompanied by the shortening of charge and discharge time and the decrease of total capacity.

关 键 词：锂离子电池 浸没冷却 热管理 温度 电学性能 

分 类 号：TM912.9[电气工程—电力电子与电力传动]