摘要
针对交通车辆对动力电池系统的温度控制要求,进行无相变材料强迫风冷散热效果实验研究。实验结果表明其不能满足锂电池使用要求。设计了相变材料-导热介质-强迫空气对流的锂电池复合散热系统,首先研究了1 C和2 C充放电倍率时的散热效果;再利用FLUENT软件建立了复合散热系统模型,分析了相变材料厚度、冷却风温度、冷却风速度、导热片高度对散热效果的影响;最后,拟合出了锂电池复合散热系统参数的设计参数计算公式,用于指导散热系统的工程设计。
Aiming at the temperature control requirements of electric vehicles for power battery systems,the effect of forced air-cooling of non-phase change materials was studied.The test results show that it can’t meet the requirement of power batteries.A composite heat dissipation system of lithium battery with phase change material,heat conduction medium and forced air convection was designed.Firstly,based on the composite heat dissipation system test bench,the heat dissipation effect of 1 C and 2 C charge-discharge rates was studied.Then,the composite heat dissipation system model was established by FLUENT software,and the effects of these factors including thickness of phase change material,cooling air temperature,cooling wind speed and height of thermal sheet on the heat dissipation were analyzed.Finally,the designed parameter formula in the composite thermal system of lithium batteries was fitted to guide the engineering design of the heat dissipation.
作者
左妍妍
刘楠
ZUO Yan-yan;LIU Nan(Tangshan Vocational and Technical College,Tangshan Hebei 063000,China;CRRC Tangshan Co.Ltd.,Tangshan Hebei 064000,China)
出处
《电源技术》
CAS
北大核心
2020年第4期532-536,共5页
Chinese Journal of Power Sources
基金
国家重点研发计划(2017YFB1201005)。
关键词
锂电池
热管理
相变材料
复合散热
lithium battery
thermal management
phase change material
composite heat dissipation
