EXPERIMENTAL AND NUMERICAL STUDY OF LIQUID-COOLING SYSTEM FOR CYLINDRICAL LITHIUM-ION BATTERY

• Main Author: Faiq Al-Harits, Mochammad
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/86343
• Institution: Institut Teknologi Bandung

Indonesia, which holds nearly 50% of the world’s nickel reserves, has significant potential to become a key player in the global electric vehicle (EV) industry, particularly in battery production. As EV sales rise and the demand for lithium-ion batteries increases, Indonesia has taken steps toward downstream processing by establishing the Morowali industrial area in Sulawesi. This initiative aims to add value to the country's nickel resources by transforming them into high-value EV components, such as battery packs. A crucial element in battery pack design is ensuring safe and efficient thermal management, particularly due to the heat generated during charging and discharging. With advancements in EV technology, batteries are subjected to more extreme conditions, including higher discharge currents to power motors and faster charging rates, which can raise temperatures to as high as 80 °C. Prolonged exposure to elevated temperatures accelerates battery degradation, leading to capacity loss, reduced cycle life, and potential thermal runaway. In this study, a serpentine-structured liquid cooling Battery Thermal Management System (BTMS) was developed for cylindrical lithium-ion cells and tested experimentally under various operating conditions. The BTMS successfully maintained battery temperatures within the safe range of 25 °C to 40 °C, even under high discharge currents and fast charging. Furthermore, a numerical simulation model was developed and validated with experimental data, yielding an overall error range of 0.36% to 11.55%. This model offers a reliable and cost-effective tool for future BTMS designs, ensuring battery safety and performance under various conditions.