Study on effect of diverse air inlet arrangement on thermal management of cylindrical lithium-ion cells |
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Authors: | Abhinav Sharma Yashodhan Patil Ravi Krishnaiah PhD B. Ashok PhD Akhil Garg PhD Liang Gao PhD |
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Affiliation: | 1. School of Mechanical Engineering, Vellore Institute of Technology, Vellore, Tamil Nadu, India;2. State Key Laboratory of Digital Manufacturing Equipment and Technology, Huazhong University of Science and Technology, Wuhan, Hubei, China |
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Abstract: | Lithium-ion cells are preferred in the electrical powertrain due to high-power density, compactness, and modularity. In real driving conditions, the cells undergo discharge rates as high as 4 C resulting in high heat generation affecting the performance. To obtain the maximum performance the pack construction and thermal management of cells are crucial parameters. In our work, air-cooled technique with diverse air inlet and staggered scheme with a two-channel partition approach for thermal management of the cylindrical lithium-ion cells are studied in computational fluid dynamics. The simulation model is validated with experimental results. The obtained results demonstrate that the cells in the dual-directional air inlet arrangement had low maximum temperature difference among and within the cells and required least fan work. This arrangement required least fan work to generate optimal air inlet velocity of 2 m/s for 1, 2, and 3 C and 4 m/s for 4 C discharge rates. There is a reduction of 50% and 33% fan work for 3 and 4 C discharge rates, which are the majority operating points. Also, it shows that the temperature uniformity within the cells has improved. The results of this study can used to optimize parameters for designing an enhanced thermal management system. |
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Keywords: | air cooling battery thermal management inlet configurations lithium-ion battery |
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