Analysis and design of a water-cooling structure for 18650 cylindrical battery

Xin Zhang; Jianchao Liu; Tong Wang; Qingli Gao; Jin Han

doi:10.1117/12.2625450

12 December 2021 Analysis and design of a water-cooling structure for 18650 cylindrical battery

Xin Zhang, Jianchao Liu, Tong Wang, Qingli Gao, Jin Han

Proceedings Volume 12127, International Conference on Intelligent Equipment and Special Robots (ICIESR 2021); 121270M (2021) https://doi.org/10.1117/12.2625450
Event: International Conference on Intelligent Equipment and Special Robots (ICIESR 2021), 2021, Qingdao, China

Abstract

Aiming at the problems of large internal heat generation and uneven heat dissipation of cylindrical power battery module of electric vehicle, a new divergent heat dissipation model of cylindrical battery is proposed. A certain type of 18650 batteries is taken as an example to simulate and analyze its temperature field. The results show that the temperature distribution law of batteries located on the same concentric circle is almost the same. For the single cell, the overall temperature distribution shows the following law: the temperature gradually decreases from inside to outside of the battery. The temperature gradually decreases from top to bottom of the battery . The temperature near the center of the flow field is low. The temperature away from the center of the flow field is high. The change rate of the maximum temperature and the maximum temperature difference of the battery pack gradually decreases with the increase of mass flow rate. The change rate of the maximum temperature and the maximum temperature difference of the battery pack gradually decreases with the increase of the center distance. And the lowest is -1.59% and -14.95%. It provides a reference for the future research on heat dissipation of cylindrical battery

Citation Download Citation

Xin Zhang, Jianchao Liu, Tong Wang, Qingli Gao, and Jin Han "Analysis and design of a water-cooling structure for 18650 cylindrical battery", Proc. SPIE 12127, International Conference on Intelligent Equipment and Special Robots (ICIESR 2021), 121270M (12 December 2021); https://doi.org/10.1117/12.2625450

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