期刊
JOURNAL OF POWER SOURCES
卷 255, 期 -, 页码 9-15出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2014.01.006
关键词
Thermal management; Lithium ion battery; Metal foam; Phase change materials
资金
- National Excellent Doctoral Dissertation Foundation of China [201041]
- National Key Basic Research Program of China (973 Project) [2011CB610306]
- Fok Ying Tung Education Foundation of China [131054]
- National Natural Science Foundation of China [51322604]
A highly efficient thermal strategy to manage a high-powered Li-ion battery package within the required safe temperature range is of great demand for electric vehicles (EVs) applications. A sandwiched cooling structure using copper metal foam saturated with phase change materials was designed. The thermal efficiency of the system was experimentally evaluated and compared with two control cases: a cooling mode with pure phase change materials and an air-cooling mode. The results showed that the thermal management with air natural convection cannot fulfill the safety demand of the Li-ion battery. The use of pure PCM can dramatically reduce the surface temperature and maintain the temperature within an allowable range due to the latent heat absorption and the natural convection of the melted PCM during the melting process. The foam-paraffin composite further reduced the battery's surface temperature and improved the uniformity of the temperature distribution caused by the improvement of the effective thermal conductivity. Additionally, the battery surface temperature increased with an increase in the porosity and the pore density of the metal foam. (C) 2014 Elsevier B.V. All rights reserved.
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