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Design, development and thermal analysis of reusable Li-ion battery module for future mobile and stationary applications

Divakaran, A.M., Hamilton, D., Manjunatha, K.N. and Minakshi, M.ORCID: 0000-0001-6558-8317 (2020) Design, development and thermal analysis of reusable Li-ion battery module for future mobile and stationary applications. Energies, 13 (6). Article 1477.

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The performance, energy storage capacity, safety, and lifetime of lithium-ion battery cells of different chemistries are very sensitive to operating and environmental temperatures. The cells generate heat by current passing through their internal resistances, and chemical reactions can generate additional, sometimes uncontrollable, heat if the temperature within the cells reaches the trigger temperature. Therefore, a high-performance battery cooling system that maintains cells as close to the ideal temperature as possible is needed to enable the highest possible discharge current rates while still providing a sufficient safety margin. This paper presents a novel design, preliminary development, and results for an inexpensive reusable, liquid-cooled, modular, hexagonal battery module that may be suitable for some mobile and stationary applications that have high charge and or discharge rate requirements. The battery temperature rise was measured experimentally for a six parallel 18650 cylindrical cell demonstrator module over complete discharge cycles at discharge rates of 1C, 2C and 3C. The measured temperature rises at the hottest point in the cells, at the anode terminal, were found to be 6, 17 and 22 °C, respectively. The thermal resistance of the system was estimated to be below 0.2 K/W at a coolant flow rate of 0.001 Kg/s. The proposed liquid cooled module appeared to be an effective solution for maintaining cylindrical Li-ion cells close to their optimum working temperature.

Item Type: Journal Article
Murdoch Affiliation(s): Engineering and Energy
Publisher: MDPI
Copyright: © 2020 by the authors. Licensee MDPI, Basel, Switzerland.
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