热管用于锂离子电池组散热性能的研究

Research on Heat Pipe Used for Heat Dissipation Performance of Lithium-Ion Battery Pack

将风冷散热与热管技术结合,设计一组三并四串的21700型锂离子电池散热模块,通过实验研究该电池散热模块的散热性能,并与模拟散热模块研究性能结果进行对比。结果表明:当热管长度为50mm时,在不同环境温度(15,25,30℃)和不同放电倍率(1C,2C,3C)下,均能满足电池散热性能要求。实验与模拟结果对比两者温度变化趋势基本相似,确保了电池组散热模型的准确性,为未来的模拟优化测试提供了依据。

This article combines air-cooled heat dissipation with heat pipe technology to design a set of 21700 lithium-ion battery heat dissipation modules in three-parallel four series.The heat dissipation performance of the battery heat dissipation module is experimentally studied and compared with the research performance results of the simulation heat dissipation module.The results show that when the length of the heat pipe is 50 mm,it can meet the requirements of battery heat dissipation performance under different ambient temperatures(15,25,30℃)and different discharge rates(1C,2C,3C).The experimental and simulation results are compared,and the temperature change trends of the two are similar,which ensures the accuracy of the battery pack heat dissipation model and provides a basis for future simulation optimization tests.