Innovative System Design and Numerical Investigation Based on Air Cooling and Baffle Utilization in the Thermal Management of Lithium Ion Batteries
Abstract
Effective management of temperature in battery packs, which are used in a wide range of applications from portable devices to electric vehicles, plays a critical role in terms of both efficiency and safety. In this study, a new air cooling thermal management system was designed to improve the thermal management of lithium ion battery packs and was comparatively examined with a conventional system. In the developed design, front and rear air inlets along with a top outlet were implemented, and baffles were added to achieve a more homogeneous distribution of airflow between the cells. The conventional system, on the other hand, was modeled based on the principle of front inlet and rear outlet without baffles. These two designs were compared through CFD analyses in terms of maximum battery temperature and maximum temperature difference. In the analyses, three different inlet air temperatures of 299.15 K, 294.15 K, and 289.15 K were investigated. The airflow velocity at the entrance of the battery pack was set to 0.5 m/s. The analysis results showed that the developed design reduced the maximum battery temperature and maximum temperature difference by 1.82-3.38 K and 2.48-4.29 K, respectively, compared to the conventional design.
Keywords
Battery case, Baffle, Air cooling, Battery thermal management
Ethical Statement
References
- ANSYS Inc. (2022). ANSYS Fluent Theory Guide.
- Behi, H., Karimi, D., Behi, M., Ghanbarpour, M., Jaguemont, J., Sokkeh, M. A., Gandoman, F. H., Berecibar, M., Van Mierlo, J. (2020). A new concept of thermal management system in Li-ion battery using AC and heat pipe for electric vehicles. Applied Thermal Engineering, 174, 115280. https://doi.org/10.1016/j.applthermaleng.2020.115280
- Cha, H. R., Angani, A., Hwang, M. H. (2023). Thermal management of lithium-ion batteries by novel designs of wavy cold plates: Performance comparison. Journal of Energy Storage, 73, 109303. https://doi.org/10.1016/j.est.2023.109303
- Chandra, P., Jishnu, A. K., Garg, A., Panigrahi, B. K., Singh, S. (2022). Heat transfer augmentation of lithium‐ion battery packs by incorporating an interrupted fin arrangement. International Journal of Energy Research, 46(10), 14371-14395. https://doi.org/10.1002/er.8151
- Chaudhari, J., Singh, G. K., Rathod, M. K., Ali, H. M. (2024). Experimental and computational analysis on lithium-ion battery thermal management system utilizing AC with radial fins. Journal of Thermal Analysis and Calorimetry, 149, 203-218. https://doi.org/10.1007/s10973-023-12698-w
- Chen, F., Huang, R., Wang, C., Yu, X., Liu, H., Wu, Q., Qian, K., Bhagat, R. (2020). Air and PCM cooling for battery thermal management considering battery cycle life. Applied Thermal Engineering, 173, 115154. https://doi.org/10.1016/j.applthermaleng.2020.115154
- Cheng, L., Garg, A., Jishnu, A. K., Gao, L. (2020). Surrogate based multi-objective design optimization of lithium-ion battery air-cooled system in electric vehicles. Journal of Energy Storage, 31, 101645. https://doi.org/10.1016/j.est.2020.101645
- Gao, C., Sun, K., Song, K., Zhang, K., Hou, Q. (2024). Performance improvement of a thermal management system for Lithium-ion power battery pack by the combination of phase change material and heat pipe. Journal of Energy Storage, 82, 110512. https://doi.org/10.1016/j.est.2024.110512
- He, R., Song, K., Wu, X., Zhang, Q., Zhang, K., Su, M., Hou, Q. (2025). Effectiveness analysis of novel battery thermal management systems combining phase change material and air-cooled technologies. Applied Thermal Engineering, 264, 125499. https://doi.org/10.1016/j.applthermaleng.2025.125499
- Li, Z., Zhang, Y., Zhang, S., Tang, B. (2024). Phase change materials for lithium-ion battery thermal management systems: a review. Journal of Energy Storage, 80, 110259. https://doi.org/10.1016/j.est.2023.110259
