An experimental study on thermal management of lithium ion battery packs using an improved passive method

作者：Wang, Wenjian; Zhang, Xuan; Xin, Chengyun; Rao, Zhonghao^*

来源：Applied Thermal Engineering, 2018, 134: 163-170.

DOI：10.1016/j.applthermaleng.2018.02.011

• Lithium ion battery pack
• Battery thermal management
• Heat transfer enhancement
• Composite phase change material

The performance and life span of the power battery are limited by its operating temperature, hence the battery thermal management (BTM) is a key technology for electric vehicle. In this study, a novel BTM system based on composite phase change materials (C-PCM) with aluminum boxes is developed. The temperature control performance of the system is tested at different discharge rates (1C, 2C) at different ambient temperature (0 degrees C, 10 degrees C, 20 degrees C and 30 degrees C). The results show that the C-PCM can significantly reduce the average temperature and improve the temperature uniformity of the lithium ion battery pack. Furthermore, the performance of the C-PCM for the thermal control starts to deteriorate after completely melting, therefore an accurate dosage estimation of the C-PCM is a key problem for its application.

• 出版日期2018-4
• 单位中国矿业大学（北京）