Abstract: With environment degradation and energy source depletion，high energy density lithium-ion power battery has attracted more and more attention. However，its wide use is still limited by characteristics，longevity and safety of lithium-ion. Lithium-ion can only work safely and effectively in a reasonable temperature period between 25℃ to 40 ℃，that requires a feasible thermal management system. This paper reviews the research progress of several cooling technologies used for lithium-ion battery，including air-cooling，liquid-cooling，phase change material cooling and heat pipe cooling. The applied lithium-ion thermal management system nowadays is complicated in structure，huge in size，heavy in weight and requires extra energy consumption. Hence，ultra-thin heat pipe is proposed as one of the solutions，and coupling of ultra-thin heat pipe with phase change material will meet the demand of heat dissipation and storage for lithium-ion power battery thermal management system.

Key words: lithium-ion power battery, thermal management, heat pipe, ultra-thin, phase change material

摘要： 近年来，锂离子动力型电动汽车炙手可热，但它的广泛应用还受限于电池性能、寿命及使用安全等问题。锂离子电池在25～40℃内可高效安全运行，这就需要配备高效的热管理系统以保障整车安全。本文针对锂离子电池，主要综述了包括风冷、液冷、相变材料冷却和热管冷却等热管理技术的研究进展。通过分析研究发现，目前应用的热管理技术不仅在极端条件下冷却能力不足，而且存在结构复杂、体积及质量过大等缺点，既增加了电池的额外能耗，也与汽车轻量化的发展方向相悖。针对于此，本文提出开发超薄型热管的冷却技术，并认为热管和相变材料耦合的热管理技术将有效解决锂离子电池的散热与蓄热问题。

关键词: 锂离子电池, 热管理, 热管技术, 超薄型, 相变材料