Experimental Study Of Single Phase Forced Flow Immersion Cooling Method For Li-Ion Battery Pack Using Tmc-7300 Liquid

Dzakwan, Muhammad (2026) Experimental Study Of Single Phase Forced Flow Immersion Cooling Method For Li-Ion Battery Pack Using Tmc-7300 Liquid. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Penelitian ini menginvestigasi performa termal sistem pendinginan immersion dengan aliran paksa menggunakan fluida dielektrik TMC-7300 untuk manajemen termal baterai lithium-ion. Sistem pendinginan fase tunggal dirancang dan dirakit untuk battery pack LiFePO₄ 4 sel (2.8 V × 4, 50 Ah) dengan rasio immersion 90%. Pengujian eksperimental dilakukan pada laju discharge 2C dan 3C dengan variasi laju aliran fluida pendingin dari 3.5 L/menit hingga 6 L/menit, membandingkan konfigurasi inlet depan dan inlet samping. Hasil menunjukkan bahwa sistem pendinginan immersion secara signifikan menurunkan temperatur baterai dibandingkan kondisi tanpa pendinginan yang mencapai 67.87°C. Pada discharge 2C dengan laju aliran 6 L/menit, kedua konfigurasi mempertahankan temperatur di bawah batas aman 40°C, mencapai 35.61°C (inlet depan) dan 36.83°C (inlet samping). Pada discharge 3C, sistem mendekati namun melampaui batas aman, dengan 6 L/menit mencapai 46.92°C (inlet depan) dan 49.35°C (inlet samping). Konfigurasi inlet depan secara konsisten mengungguli inlet samping sebesar 1.22°C hingga 5.8°C pada semua kondisi. Laju aliran fluida pendingin yang lebih tinggi meningkatkan manajemen termal, dengan performa optimal teramati pada 5-6 L/menit. Inlet depan memerlukan minimum 4 L/menit sedangkan inlet samping membutuhkan 4.5 L/menit untuk mempertahankan temperatur aman. Temuan ini mengonfirmasi bahwa pendinginan immersion dengan aliran paksa menggunakan TMC-7300 secara efektif memperluas batas operasional baterai lithium-ion, meskipun optimasi laju aliran dan konfigurasi inlet sangat penting untuk aplikasi discharge tinggi.
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This study investigates the thermal performance of a forced-flow immersion cooling system using TMC-7300 dielectric fluid for lithium-ion battery thermal management. A single-phase cooling system was designed and assembled for a 4-cell LiFePO₄ battery pack (2.8 V × 4, 50 Ah) with 90% immersion ratio. Experimental tests were conducted at 2C and 3C discharge rates with coolant flow rate variations ranging from 3.5 L/min to 6 L/min, comparing front inlet and side inlet configurations. Results demonstrate that the immersion cooling system significantly reduces battery temperatures compared to no-cooling conditions, where temperatures reached 67.87°C. At 2C discharge with 6 L/min flow rate, both configurations maintained temperatures below the 40°C safe limit, achieving 35.61°C (front inlet) and 36.83°C (side inlet). At 3C discharge, the system approached but exceeded safe limits, with 6 L/min achieving 46.92°C (front inlet) and 49.35°C (side inlet). The front inlet configuration consistently outperformed the side inlet by 1.22°C to 5.8°C across all conditions. Higher coolant flow rates improved thermal management, with optimal performance observed at 5-6 L/min. The front inlet required minimum 4 L/min while the side inlet needed 4.5 L/min to maintain safe temperatures. These findings confirm that forced-flow immersion cooling with TMC-7300 effectively extends operational boundaries of lithium-ion batteries, though flow rate and inlet configuration optimization are critical for high-discharge applications.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Battery Thermal Management System, Immersion Cooling, Lithium-Ion Battery.
Subjects:	V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM471 Ships--Electric equipment
Divisions:	Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis
Depositing User:	Muhammad Dzakwan
Date Deposited:	06 Feb 2026 01:53
Last Modified:	06 Feb 2026 01:53
URI:	http://repository.its.ac.id/id/eprint/131613

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