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CFD Simulation for Thermal Management System (Passive PCM Cooling) of Lithium Ion Batteries in EVs

Abhishek Salunkhe

Electric vehicles are the future of mobility. Along with the rapid accretion of EVs in the last few years, demand for quick charging, high efficiency, and longer battery life has increased. With faster charging-discharging cycles, there comes a challenge to maintain efficiency with faster heat dissipation. One such way is passive cooling using Phase Change Material (PCM). PCMs are widely used as Latent Thermal Energy Storage (TES) in thermal management systems because of their large latent heat and capabilities of maintaining a nearly constant temperature. A TES technology requires a number of scientific and technological challenges to be addressed including TES materials, components, and devices. In this paper, Analysis was done on 18650 Li-ion cells for various discharge rates using PCM. Comparative computational fluid dynamic analysis for all discharge rates with different cooling techniques was performed and it gives insights into the performance of techniques under observation.