Angkasa: Jurnal Ilmiah Bidang Teknologi
Vol 18, No 1 (2026): Februari

Numerical Analysis of Mass Flow Rate Effect for 18650 Lithium-ion Battery Modules Thermal Management with Liquid Cooling System

Fourlando, Rainer Samuel (Unknown)
Julian, James (Unknown)
Wahyuni, Fitri (Unknown)
Purba, Riki Hendra (Unknown)
Madhudhu, Fathin Muhammad (Unknown)
Armadani, Elvi (Unknown)



Article Info

Publish Date
27 Feb 2026

Abstract

Effective thermal management is critical for the safety and performance of lithium-ion batteries. This study numerically investigates a liquid cooling system with a mini-channel cold plate, focusing on how different coolant ṁ affect the thermal performance of an 18650 cylindrical lithium-ion battery module. Simulations were conducted using three mass flow rate (ṁ) 0.0001, 0.0003, and 0.0005 kg/s to evaluate their impact on maximum temperature (Tmax) and temperature difference (ΔT). Results show that increasing the ṁ significantly lowers the battery's maximum temperature. besides, increasing the ṁ will cause a higher pressure drop. All configurations successfully maintained excellent temperature uniformity, keeping the temperature difference well below the critical 5°C threshold. Therefore, this study confirms the system's effectiveness and highlights the necessity of optimizing (ṁ) based on the trade-off between thermal efficieny and pressure drop for designing reliable battery thermal management systems.

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