期刊
ENERGY CONVERSION AND MANAGEMENT
卷 176, 期 -, 页码 131-146出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.enconman.2018.09.025
关键词
PCM; Fin; PCM-fin structure; Li-ion battery; Thermal management; High temperature
资金
- National Natural Science Foundation of China [51604297]
- European Commission's Marie Curie Action
- Key Research and Development Program of Shandong Province [2018GSF120011]
- Fundamental Research Funds for the Central Universities [18CX07005A]
- European Commission's Marie Curie Incoming International Fellowship grant [656582]
The safety, performance and durability of the Li-ion battery module are limited by the operating temperature especially in the hot temperature regions, hence the thermal management system is essential for battery module. In this paper a novel phase change material (PCM) and fin structure was proposed for the thermal management system of LiFePO4 battery module to reduce the maximum temperature and improve the temperature uniformity in high-temperature environment (40 degrees C). Carefully designed experiments were performed for model validation. The effects of PCM species, fin thickness, fin spacing and PCM thickness on the cooling performance of battery module were investigated numerically. The results showed that PCM-fin structure thermal management system with optimized design exhibited good thermal performance, keeping the maximum temperature of the battery surface under 51 degrees C at relatively high discharge rate of 3C. Moreover, by investigating the thermal behavior of PCM during discharge process and cycle test, it has been found that PCM-fin structure has the advantage of improving natural convection and heat conduction within the PCM structure, and as a result enhances heat dissipation efficiency and reduces failure risk in passive thermal management systems using PCMs.
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