Optimization and sensitivity analysis of extended surfaces during melting and freezing of phase changing materials in cylindrical Lithium-ion battery cooling

Abstract
In this paper, the cooling of an 18,650 cylindrical lithium-ion battery is examined. This cell is evaluated by placing the fins on its surface and immersing it in the phase change material. The sensitivity analysis is performed on the dimensions of the fins and their effect on the TMax of the cylindrical lithium-ion battery and the melting rate of the phase change material is investigated. First, the equations governing are solved. Then, the sensitivity analysis of the fin dimensions is done using the response surface method. Finally, an optimal model is provided for use the heat management system. The results of this study show that the use of phase change material and placing the fins on the cylindrical lithium-ion battery reduce its surface temperature. Sensitivity analysis shows that the length of the fins has a greater effect on the reduction of surface temperature. An increment in the fin size (increasing the height and width of the fins) enhances the average amount of liquid phase change material during the charging process as well as when it is fully charged. Enhancing the distance between the fins also intensifies the amount of liquid phase change material. An increase in the fin height reduces the amount of cylindrical lithium-ion battery temperature during the charging process. Increasing the fin width, however, first decreases and then increases the temperature.

Author
Talib K. Ibrahim

DOI
https://doi.org/10.1016/j.est.2022.104545

Publisher
Journal of Energy Storage

ISSN
2352-152X

Publish Date: