基于空气冷却技术的动力电池散热方式研究现状

Research Status of Power Battery Heat Dissipation Based on Air Cooling Technology

电池温度是影响电池组性能的重要因素,高温会严重影响电池的容量和寿命,并对电池的结构产生不可逆的破坏,甚至会导致安全事故的发生,所以对电池组的散热是必要的。描述锂离子电池的热特性,阐述温度对动力电池的影响以及散热对于动力电池的重要性。介绍了动力电池常见的散热方式,重点介绍空冷散热方式的研究现状,并对强制冷却与主动冷却进行了对比。分析了强制冷却中的串行通风与并行通风,结果表明并行通风优于串行通风。

Battery temperature is an important factor affecting the performance of the battery pack.High temperature will seriously affect the capacity and life of the battery,and cause irreversible damage to the structure of the battery,and even lead to safety accidents,so cooling the battery pack is necessary.The thermal characteristics of lithium-ion batteries,the influence of temperature on power batteries and the importance of heat dissipation to power batteries were described.The common ways of heat dissipation of power battery were introduced,and the research status of air cooling heat dissipation was mainly introduced.Forced cooling and active cooling were compared,the serial ventilation and parallel ventilation in forced cooling were analyzed.The results show that parallel ventilation is superior to serial ventilation.