Design and Optimization of a Thermal Management Structure for EV-based Lithium-ion Battery Arrays

DOI: https://doi.org/10.62517/jes.202502216

Author(s)

Lepeng Wang*, Yajie Jiang

Affiliation(s)

School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore *Corresponding Author

Abstract

A thermal structure was designed and optimized in this study to minimize the thermal interaction between individual batteries, thus mitigating temperature distribution gradients and potential hotspots. the proposed structure achieved a 35% reduction in the maximum inter-cell temperature difference and maintained every cell below 40℃ during a 4C discharge pulse, demonstrating its practical effectiveness for EV duty cycles.

Keywords

Thermal Management; Multi-Battery System; Temperature Differences

References

[1] C. Y. Wang, W. B. Gu, and B. Y. Liaw, J. Electrochem. Soc., 145, 3407(1998). [2] W. B. Gu, C. Y. Wang, S. L. Li, B. Y. Liaw, and M. M. Geng, Electrochim. Acta, 44, 4525(1999). [3] Gu, W. B., & Wang, C. Y. (2000). Thermal‐electrochemical modeling of battery systems. Journal of the Electrochemical Society, 147(8), 2910. [4] Hu, Y., Yurkovich, S., Guezennec, Y., & Yurkovich, B. J. (2011). Electro-thermal battery model identification for automotive applications. Journal of Power Sources, 196(1), 449-457. [5] Zhu, J., Knapp, M., Darma, M. S. D., Fang, Q., Wang, X., Dai, H., & Ehrenberg, H. (2019). An improved electro-thermal battery model complemented by current dependent parameters for vehicular low temperature application. Applied Energy, 248, 149-161.