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The cooling performance of a thermal battery plays a critical role in its efficiency, lifespan, and safety. This importance stems from the heat generated during charging and discharging processes. As temperatures rise, key battery characteristics are significantly affected. The present paper presents a numerical investigation of the cooling of a Lithium-ion battery composed of 90 cells. It was found that the coolant inlet velocity significantly impacts the module's temperature distribution and the maximum temperature difference. The effect of using nanofluids was studied with three different types of nanoparticles (alumina, copper, and fullerene) dispersed in water as the base fluid. The results show that the temperature difference in the module varies depending on the nature and volume fraction of the nanoparticles.
