热管强化动力电池散热技术研究进展

Research progress of heat pipe enhanced power battery heat dissipation technology

动力电池是新能源汽车的重要组成部分,散热系统设计决定其安全性及使用寿命,如何强化动力电池充放电过程快速均匀散热成为研究热点。文中从优化热管设计和改善传统散热方式角度,归纳了热管与风冷、液冷和相变材料冷却耦合3种系统强化动力电池散热过程的发展脉络,对比了耦合系统在电池热管理中的应用研究现状。热管/风冷系统结构简单、设计难度低;热管/液冷系统降温性能更优;热管/相变材料冷却系统不仅具有较好的降温性能,且表现出良好的热均匀性,该系统辅加风冷或液冷能够进一步提升降温性能。文章对热管强化动力电池技术规模化应用具有参考价值。

Power battery is an important part of new energy vehicles.The heat removal system′s design has an impact on the power battery′s safety and service life.It was discussed how to improve speedy and uniform heat dissipation during the charging and discharging of power batteries.From the standpoint of optimizing heat pipe design and improving traditional heat dissipation methods,the development of three systems summarizes to enhance the heat dissipation process of power batteries,namely heat pipe coupled with air cooling,liquid cooling,and phase change material cooling.A comparison is made of the present status of research on the use of coupled systems in battery temperature control.The heat pipe/air cooling system is easy to assemble and has a simplistic design.For optimum cooling performance,a heat pipe/liquid cooling system was used.Heat pipe/phase change material cooling systems have superior cooling performance and thermal homogeneity,and it can be combined with air or liquid cooling to boost cooling even further.This evaluation will considerably help the large-scale deployment of heat pipe enhanced power battery technology.