储能科学与技术 ›› 2013, Vol. 2 ›› Issue (5): 451-459.doi: 10.3969/j.issn.2095-4239.2013.05.002

• 特约评述 • 上一篇    下一篇

相变材料用于锂离子电池热管理系统的研究进展

凌子夜1, 方晓明1, 汪双凤1, 张正国1, 刘晓红2   

  1. 1 华南理工大学传热强化与过程节能教育部重点实验室,广东 广州 510640;
    2 广东轻工职业技术学院汽车系, 广东 广州 510300
  • 收稿日期:2013-05-22 出版日期:2013-10-19 发布日期:2013-10-19
  • 通讯作者: 通信联系人:张正国,教授,研究方向为相变储热与强化传热,E-mail:cezhang@scut.edu.cn.
  • 作者简介:凌子夜(1989--),男,硕士研究生
  • 基金资助:
    广东省教育部产学研结合项目(2012B091100142),广东省自然科学基金(S2011010001403)及国际科技合作计划项目(2013DFG60080)

Thermal management of lithium-ion batteries using phase change materials

LING Ziye1, FANG Xiaoming1, WANG Shuangfeng1, ZHANG Zhengguo1, LIU Xiaohong2   

  1. 1 Key Laboratory of Enhanced Heat Transfer and Energy Conservation,The Ministry of Education,South China University of Technology,Guangzhou 510640,Guangdong,China;
    2 Automotive Department, Guangdong Industry Technical College,Guangzhou 510300,Guangdong,China
  • Received:2013-05-22 Online:2013-10-19 Published:2013-10-19

摘要: 良好的热管理系统是电池安全及高效使用的保证,电池的热管理需要确保电池温度在安全温度范围以及电池组内最大温差不超过5 ℃.传统的热管理方式,如空气冷却,不仅需要额外的动力输入,而且越来越不能满足高能量密度的新型锂离子电池的热管理需要.使用相变材料的电池热管理系统,利用相变材料的相变潜热吸收电池产生的热量,在不使用外界功耗的条件下,可以长时间保持电池的温度在适宜的范围内.通过与膨胀石墨,金属泡沫复合,相变材料的热导率可以大大提高,电池组内体系温度均匀性可以满足工作要求.而且,相变材料的形状不固定,可以使用在任意形状的电池上.被动式热管理是应用于电池热管理系统中最具前景的技术.

关键词: 锂离子电池, 热管理系统, 相变材料

Abstract: Good battery thermal management systems (BTMSs) are essential for Li­ion batteries for safe, reliability and efficiency. A BTMS needs to ensure not only the temperature of all battery cells within a safe range, but also the maximum temperature difference between different cells within battery pack below 5 ℃. Conventional BTMSs such as active air cooling and liquid cooling require extra power and fail to cope with high density of heat generation. Passive BTMSs make use of latent heat of phase change materials (PCMs) to absorb the heat generated by batteries are proved to be an effective way to maintain the battery temperature within their safety range without the use of extra energy. If combined with expanded graphite or metal foams, thermal conductivity of PCMs could be improved significantly. This can minimize the battery pack temperature difference and achieve an uniform temperature difference between different cells. As it is relatively easy to make PCMs into different shapes, they can be applied to batteries of different shapes and battery systems with a variety of configurations.

Key words: lithium-ion battery, thermal management system, phase change material

中图分类号: