基于相变材料的锂离子电池组热管理研究进展

Progress in applied research of phase change materials on thermal management for Li-ion battery pack

介绍了相变储能材料的特性及分类,分析了锂离子电池组的产热机理及对其进行热管理的必要性。总结了近几年来采用风冷、液冷等热管理系统的研究进展,重点介绍了基于相变材料的热管理系统的优势、存在的问题及其改进方法。针对石蜡等相变材料的导热系数小等缺点,提出了几种强化传热的方案,展望了电池组热管理系统的应用前景。

The properties and categories of phase change materials were introduced; the mechanism of heat generation of Li-ion battery was analyzed with the emphasis on the necessity of thermal management. Application progress of air-cooling and liquid-cooling on thermal management systems in recent years were summarized. Advantages, disadvantages and improvement methods of thermal management system with PCM were elaborated. As for the low thermal conductivity of paraffin, some schemes to improve its heat transfer performance were proposed, and application of thermal management system for Li-ion battery was prospected.