A hybrid battery thermal management system using ionic wind and phase change material

Rishav Kumar and Pradipta Kumar Panigrahi

Applied Energy, 2024, vol. 359, issue C, No S030626192400059X

Abstract: The present study reports development and performance study of a ‘hybrid’ thermal management system (TMS) using phase change material (PCM) and ionic wind. The battery is surrounded by PCM material and air flow around the battery packing is generated by ionic wind. Both experimental and simulation studies have been carried out. Electrohydrodynamic-based air propulsion (ionic wind) is used for generating forced air convection. The heat generation rate of the battery is set at 8.8 W (8C) and 6.6 W (6C). Wire-to-cylinder type arrangement is used for ionic wind generation and 3 wire electrodes are symmetrically placed around the battery. The experiments are conducted at three actuation voltages (7 kV, 8 kV and 9 kV) for ionic wind generation. Simulation study has been carried out to study the flow characteristics of the ionic wind and to describe the PCM melting behaviour. Ionic wind enhances the heat transfer coefficient by 260% as compared to free convection at 9 kV actuation voltage. Isothermal temperature plateau behaviour of the battery due to PCM contributes to the superior performance of the hybrid TMS which gets extended by 76% because of ionic wind. Fatty acid and Paraffin based phase change materials are studied to investigate the effect of thermophysical property of PCM. Paraffin shows superior heat storage performance than fatty acid by reducing the plateau temperature level by 14.5%. The time duration of isothermal plateau behaviour of paraffin also gets extended by 35% compared to fatty acid. Overall, the present study demonstrates the superior performance of hybrid thermal management system with less complexity compared to other existing air based and liquid based TMS.

Keywords: Battery; Thermal management; Phase change material; Ionic wind (search for similar items in EconPapers)
Date: 2024
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Citations: View citations in EconPapers (1)

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DOI: 10.1016/j.apenergy.2024.122676

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