摘要
以三元锂电池21700为研究对象,对锂电池的热特性模型进行简化验证,确定了简化模型的可靠性。选取四串三并的锂电池模块,建立强制风冷散热模型以及风冷铝翅片强化散热模型,进行数值模拟,并对散热结果分析。结果表明,风冷翅片在环境温度为35℃,放电倍率为2C的恶劣工况下,通过调节风速和翅片数可以满足电池散热目标:温度范围是25~45℃,温差在5℃以下。
Taking the ternary lithium battery 21700 as the research object,the thermal characteristic model of lithium battery is simplified and verified,and the reliability of the simplified model is confirmed.Four series and three parallel lithium battery modules are selected to establish forced air cooling heat dissipation model and air-cooled aluminum fin enhanced heat dissipation model,conduct numerical simulation,and analyze the heat dissipation results.The results show that under the harsh working conditions of 35℃and 2C discharge rate,the cooling target of the battery can be met by adjusting the wind speed and the number of fins:the temperature range is 25~45℃,and the temperature difference is below 5℃.
作者
刘业凤
孙伟
荆岩岩
Liu Yefeng;Sun Wei;Jing Yanyan(School of Energy and Power Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering,Shanghai 200093,China)
出处
《农业装备与车辆工程》
2021年第12期66-70,共5页
Agricultural Equipment & Vehicle Engineering
关键词
锂电池
热特性模型
风冷
铝翅片
数值模拟
lithium battery
thermal characteristic model
wind cooling
aluminum fin
numerical simulation
