摘要
针对锂离子电池在高倍率放电下热失控的问题,提出一种基于叶脉仿生结构的液冷板电池冷却系统,通过数值模拟方法系统分析了其在1 C、3 C、5 C和7 C放电的冷却性能及流体力学特性。研究对比了叶脉形、蛇形、直形和蜂窝形四种液冷板结构,结果表明:叶脉形仿生结构在不同放电倍率下的最高温度(T_(max))显著低于其他三者,5 C放电倍率下的压降(ΔP)为31.416 Pa,综合散热性能优于其他结构。进一步优化发现:当叶脉宽度为6 mm、冷却剂入口数量为3个、入口流速为0.3 m/s时,系统的T_(max)降至300.9 K,最大温差(ΔT_(max))为2.31 K,ΔP维持在31.416 Pa。
To address the challenge of thermal runaway in lithium ion batteries during high-rate discharge,this study presents a battery cooling system incorporating a liquid cooling plate with veined flow channel(LCP-VC).Using numerical simulation,the cooling performance and fluid dynamic characteristics of the system at 5 C discharge were systematically analyzed.Four liquid cooling plate configurations-vein-shaped,serpentine,straight,and honeycomb-were compared.The results show that the maximum temperature(T_(max))of the vein-shaped biomimetic structure at different discharge rates is significantly lower than that of the other three structures.At a discharge rate of 5 C,the pressure drop(ΔP)is 31.416 Pa,and its overall heat dissipation performance is superior to that of the other structures.Further optimization showed that with a vein width of 6 mm,three coolant inlets,and an inlet flow rate of 0.3 m/s,T_(max) of the system decreased to 300.9 K,temperature difference(ΔT_(max))reached 2.31 K,and ΔP remained at 31.416 Pa.
作者
陈康
曹玉春
任赵勇
CHEN Kang;CAO Yuchun;REN Zhaoyong(School of Energy,Changzhou University,Changzhou Jiangsu 213164,China)
出处
《电源技术》
北大核心
2025年第9期1890-1898,共9页
Chinese Journal of Power Sources
关键词
锂离子电池
液冷板
仿生流道
数值模拟
lithium ion battery
liquid cooling plate
biomimetic flow channel
numerical simulation
