基于浸没式冷却的锂离子电池实验研究  

Experimental study of lithium-ion battery based on immersion cooling

作　　者：吴成会 梁才航[1] WU Chenghui;LIANG Caihang(School of Mechanical and Electrical Engineering,Guilin University of Electronic Technology,Guilin Guangxi 541000,China)

机构地区：[1]桂林电子科技大学机电工程学院,广西桂林541000

出　　处：《电源技术》2023年第11期1409-1413,共5页Chinese Journal of Power Sources

基　　金：国家自然科学基金项目(51566002);广西自然科学基金项目(2018GXNSFAA281347);柳州市科技重大专项(2019AA20210)。

摘　　要：针对锂离子电池在高倍率放电下的散热问题,设计了以SF33为冷却工质的浸没式冷却实验系统,并进行相关的实验研究,且与风速为2 m/s的强制风冷实验进行对比分析,最后对沸腾过程进行可视化研究。结果表明:单体电池分别以3 C、5 C倍率放电时,浸没式冷却比强制风冷最大温升分别低2.36和6.45℃;在5 C倍率动态放电策略下,浸没式冷却条件下电池温度稳定在34~36℃波动,而在强制风冷条件下电池温度波动上升;沸腾过程强化了传热,带走了更多的热量;浸没式冷却电池组的温度控制在36℃,且电池之间温差较小。Aiming at the problem of heat dissipation of lithium-ion batteries under high rate discharge,an immersion cooling experimental system with SF33 as the cooling medium was designed and related experimental studies were carried out.Then compared with the forced air cooling experiment with a wind speed of 2 m/s analysis.Finally visualization of boiling process was studied.The results show that when the single battery is discharged at the rate of 3 C and 5 C,the maximum temperature rise of immersion cooling is 2.36℃and 6.45℃lower than that of forced air cooling,respectively.The temperature of the battery fluctuates from 34 to 36℃,and the temperature of the battery fluctuates under the condition of forced air cooling.The boiling process strengthens the heat transfer and takes away more heat.The temperature of the submerged cooled battery pack is controlled at 36℃and there is a small temperature difference between the cells.

关 键 词：锂离子动力电池 浸没式冷却 强制风冷 可视化 

分 类 号：TM912[电气工程—电力电子与电力传动]