摘要：The application of phase change materials (PCMs) in battery thermal management system (BTMS) is restricted by their low thermal conductivity and the challenge of heat-storage saturation after latent heat depletion, particularly in conditions with high ambient temperature and discharge rate. To enhance the performance of thermal management, this study firstly evaluates the thermal behaviors of two designs, Batteries-PCM and Batteries-PCMFins, under discharge rates of 3C and 5C, in conjunction with ambient temperatures of 25 degrees C and 40 degrees C. Building on this foundation, a hybrid thermal management system that incorporates snowflake fins and liquid cooling is proposed. The cooling efficiency of five different liquid cooling plate configurations (Design I -V) is compared, and the impact of coolant flow rate is explored. The results indicate that the snowflake fins in the Batteries-PCMFins design effectively reduce battery temperatures at a 3C discharge rate, maintaining a max temperature difference below 3 degrees C. However, at a 5C discharge rate and 40 degrees C ambient temperature, there is a noticeable increase in the peak temperature of the battery module across numerous cycles. Among the tested designs, Design IV shows the best performance. Specifically, when the coolant flow rate is 0.1 m/s, the discharge rate is 5C, and the ambient temperatures are 25 degrees C and 40 degrees C, compared to the design lacking a liquid cooling plate, the maximum temperature of the battery module decreases by 17.40 % and 21.36 % respectively, with respective decreases of 42.53 % and 55.77 % in the maximum temperature difference.

关键字：Battery thermal management system; Phase change materials; Snowflake fins; Liquid cooling

ISSN号：2352-152X

卷、期、页：卷90子辑A

发表日期：2024-06-15

影响因子：0.000000

期刊分区（SCI为中科院分区）：二区

收录情况：SCI（科学引文索引印刷版）,EI（工程索引）,SCIE（科学引文索引网络版）

发表期刊名称：JOURNAL OF ENERGY STORAGE

参与作者：鲁博辉

通讯作者：罗孟熙,牛尧雨

第一作者：张永学,王志浩,朱建军,张金亚,王科

论文类型：期刊论文

论文概要：罗孟熙,张永学,王志浩,牛尧雨,鲁博辉,朱建军,张金亚,王科，Thermal performance enhancement with snowflake fins and liquid cooling in PCM-based battery thermal management system at high ambient temperature and high discharge rate，JOURNAL OF ENERGY STORAGE，2024，卷90子辑A

论文题目：Thermal performance enhancement with snowflake fins and liquid cooling in PCM-based battery thermal management system at high ambient temperature and high discharge rate