摘要
采用复合相变材料热管理方式研究了热管类型、环境温度、放电倍率、热管数量以及复合相变材料等对动力电池热性能的影响。通过改变复合相变材料和导热铜管的机械结构,增强对动力电池热性能的影响,针对面向复合相变材料与导热铜管耦合热性能进行实验研究。结果表明,在不同环境温度(30,35℃)下动力电池组高倍率(4,5C,瞬态)放电的散热效果并没有随着用量的增加而提高,降温效果具有不确定性因素,其工况下动力电池组的温度普遍高于PCM(265.9g)工况下的温度。在改变PCM/泡沫铜/多孔热管复合相变材料用量的情况下,当PCM/泡沫铜/多孔热管复合相变材料的耦合模块用量为343.7g时,提高了相变材料的导热系数,能够缩小其内部温差,提高散热效率,优于其它耦合模块,具有较好的循环散热工作性能,所构造的导热铜管与复合相变材料耦合是可行的。
In this paper,this paper studies the thermal management of composite phase change materials on the thermal performance of power batteries,Including the type of heat pipe,environmental temperature,discharge rate,number of heat pipes and composite phase change materials,etc.By changing the mechanical structure of the composite phase change material and the heat conducting copper tube,the influence of the thermal performance of the power battery was enhanced.In this paper,the thermal performance of the composite phase change material and the heat conduction copper tube was experimentally investigated.The results show that the heat dissipation effect of the high-rate（4,5 C,transient）discharge of the power battery pack at different ambient temperatures（30,35 ℃）does not increase with the increase of the usage,and the cooling effect has uncertainties.The temperature of the power battery pack under its operating conditions is higher than the temperature of the PCM（265.9 g）operating conditions generally.In the case of changing the amount of PCM/foamed copper/porous heat pipe composite phase change material,when the coupling module of PCM/foamed copper/porous heat pipe composite phase change material is 343.7 g in different ambient temperature and different working conditions under experimental verification,the thermal conductivity of the phase change material is improved,the internal temperature difference can be reduced,and the heat dissipation efficiency is improved.It is superior to other coupling modules and has good heat dissipation performance.The coupling of the thermally conductive copper tube and the composite phase change material is feasible.
作者
刘军
卓威
张文灿
托尼.薛
LIU Jun;ZHOU Wei;ZHANG Wencan;TONY Shay(Foshan University Key I.aboratory of New Energy Vehicles,Foshan 528231,China;School of Engineering Technology,Eastern Michigan University,Ypsilanti MI 48107)
出处
《功能材料》
EI
CAS
CSCD
北大核心
2018年第7期7070-7075,7081,共7页
Journal of Functional Materials
基金
国家自然科学基金青年科学基金资助项目(51405082)
佛山市科技局项目科技发展专项资金资助项目(20141200014)
关键词
动力电池
复合相变材料
耦合
热管
power battery
coupling
heat pipe
composite phase change material
