摘要
针对电动车辆锂离子电池在放电过程中温度过高的问题,设计了不同的锂离子电池液冷板,研究微型管道数以及冷却液流量对锂离子电池温度分布的影响。同时采用微型管道和PCM相变材料相结合的方式来控制电池的温差,研究PCM的相变温度以及热导率对锂离子电池温度分布一致性的影响。结果表明:增加微型管道数和冷却液流量可以降低电池表面最高温度,当微型管道数为5、冷却液流量为1.5×10^(-3) kg/s时电池表面最高温度为44.3℃,温差7.6℃;使用PCM可以有效控制电池的温差,PCM的相变温度为308.15 K、热导率为0.6 W/(m·K)时,电池表面最高温度为39.56℃,温差2.71℃,一致性良好。
Aiming at the problem of high temperature distribution of lithium-ion battery during electric vehicle discharge,different liquid cooling plates were designed,and the influence of the number of mini-channel and coolant flow rate on the temperature distribution of lithium-ion battery were studied.At the same time,a cooling method that combines mini-channel and phase change materials was used to control the temperature difference of the battery,and the influence of the phase change temperature and the thermal conductivity was studied.The results show that increasing the number of mini-channel and the flow rate of the coolant can reduce the maximum temperature of the battery surface.And the maximum temperature(T_(max))and temperature difference(T_(dif))are up to 44.3℃and 7.6℃when liquid cooling is close to saturation with the number of channels is 5 and mass flow rate is 1.5×10^(-3) kg/s.Moreover,the optimal phase change temperature and thermal conductivity of PCM are 308.15 K and 0.6 W/(m·K),the T_(max) and T_(dif) of battery are 39.56℃and 2.71℃.
作者
尚文斌
张峻霞
朱曰莹
付弘历
SHANG Wenbin;ZHANG Junxia;ZHU Yueying;FU Hongli(College of Mechanical Engineering,Tianjin University of Science&Technology,Tianjin 300222,China;Tianjin Key Laboratory of Integrated Design and On-line Monitoring for Light Industry&Food Machinery and Equipment,Tianjin 300222,China)
出处
《电源技术》
CAS
北大核心
2022年第3期267-270,共4页
Chinese Journal of Power Sources
基金
国家重点研发计划资助项目(2016YFD-0701000)。
