Ismail, Ganang (2024) Studi Eksperimental Terkait Pengaruh Variasi Rasio dan Ketebalan Material Filler Serbuk Tembaga pada Phase Change Material Komposit dengan Rasio 0.2 dan 0.4 saat Discharging terhadap Kenaikan Temperatur Permukaan Baterai Lithium-Ion. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Baterai Lithium-Ion adalah baterai sekunder yang mengubah energi kimia menjadi energi listrik. Pengisian baterai yang tepat sangat penting untuk kesehatan dan kinerjanya. Untuk menjaga keamanan baterai untuk dapat digunakan pada perangkat elektronik meski bekerja pada tegangan tinggi merupakan tujuan dari rangkaian BMS (Battery Management System). Berbagai strategi manajemen termal digunakan yang meliputi air cooling, liquid cooling, solid-liquid phase change material (PCM), dan thermos-electric element. Untuk mengontrol suhu baterai selama pengoperasian, sistem manajemen termal berbasis PCM telah diusulkan, dengan paraffin menjadi bahan pengubah fasa yang paling umum digunakan. Mengatasi rendahnya konduktivitas termal paraffin dengan penambahan material filler serbuk tembaga yang dapat diperluas yang masing-masing dicampur dengan paraffin untuk meningkatkan konduktivitas termal. Variasi yang digunakan dalam studi eksperimen kali ini berupa rasio, ketebalan, dan discharge rate. Rasio paraffin wax dan material filler serbuk tembaga pada PCM komposit yang digunakan sebesar 0.2 dan 0.4. Eksperimen juga dilakukan pada variasi natural convection dan PCM murni. Ketebalan dari masing-masing rasio PCM komposit dan PCM murni yaitu sebesar 3 mm, 6 mm, dan 9 mm. Pada masing-masing variasi dilakukan pengujian dengan menggunakan arus discharge sebesar 1C, 2C, 3C, 4C, dan 5 C. Percobaan dimulai dengan menyiapkan semua modul baterai. Untuk thermocouple dipasang pada kutub baterai, dan kabel baterai tester dihubungkan. Pengujian dimulai saat suhu permukaan baterai mencapai suhu lingkungan (31°C) dan berlanjut hingga kapasitas baterai kosong. Proses discharge dan pengukuran suhu dilakukan untuk setiap modul. Analisis dilakukan untuk mengevaluasi performa PCM komposit dalam mengontrol kenaikan suhu permukaan baterai Lithium-Ion. Hasil penelitian menunjukkan bahwa sistem pendinginan menggunakan PCM, baik murni maupun komposit, sangat efektif dalam menjaga temperatur permukaan baterai. PCM komposit dengan rasio serbuk tembaga 0.4 menunjukkan performa pendinginan yang lebih baik dibandingkan dengan rasio 0.2 dimana dapat menurunkan temperatur sebesar 3 °C. Sedangkan untuk PCM komposit dengan ketebalan 9 mm menunjukkan performa pendinginan yang lebih baik dibandingkan ketebalan 3 mm dan 6 mm dengan penurunan temperatur sebesar 7 °C. ========================================================================================================================
Lithium-Ion batteries are secondary batteries that convert chemical energy into electrical energy. Proper battery charging is essential for their health and performance. To maintain the safety of the battery for use in electronic devices even though it works at high voltage is the purpose of the BMS (Battery Management System) circuit. Various thermal management strategies are used including air cooling, liquid cooling, solid-liquid phase change material (PCM), and thermos-electric elements. To control the battery temperature during operation, a PCM-based thermal management system has been proposed, with paraffin being the most commonly used phase change material. Overcoming the low thermal conductivity of paraffin by adding expandable copper powder filler material which is each mixed with paraffin to increase thermal conductivity. The variations used in this experimental study are in the form of ratio, thickness, and discharge rate. The ratio of paraffin wax and copper powder filler material in the composite PCM used is 0.2 and 0.4. Experiments were also carried out on variations of natural convection and pure PCM. The thickness of each ratio of composite PCM and pure PCM is 3 mm, 6 mm, and 9 mm. In each variation, testing was carried out using a discharge current of 1C, 2C, 3C, 4C, and 5 C. The experiment began by preparing all battery modules. For thermocouples installed on the battery poles, and the battery tester cables were connected. Testing began when the battery surface temperature reached ambient temperature (31°C) and continued until the battery capacity was empty. The discharge process and temperature measurement were carried out for each module. Analysis was carried out to evaluate the performance of composite PCM in controlling the increase in surface temperature of Lithium-Ion batteries. The results showed that the cooling system using PCM, both pure and composite, was very effective in maintaining the battery surface temperature. Composite PCM with a copper powder ratio of 0.4 showed better cooling performance compared to a ratio of 0.2 which could reduce the temperature by 3 °C. While for composite PCM with a thickness of 9 mm showed better cooling performance compared to a thickness of 3 mm and 6 mm with a temperature decrease of 7 °C.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Copper Powder, Lithium – Ion Battery, PCM, Temperature, Baterai Lithium-Ion, PCM, Serbuk Tembaga, Temperatur |
| Subjects: | T Technology > TJ Mechanical engineering and machinery > TJ165 Energy storage. T Technology > TJ Mechanical engineering and machinery > TJ263 Heat exchangers T Technology > TJ Mechanical engineering and machinery > TJ265.E23 Thermodynamics. T Technology > TJ Mechanical engineering and machinery > TJ808 Renewable energy sources. Energy harvesting. |
| Divisions: | Faculty of Industrial Technology > Mechanical Engineering > 21201-(S1) Undergraduate Thesis |
| Depositing User: | Ganang Ismail |
| Date Deposited: | 08 Aug 2024 14:27 |
| Last Modified: | 25 Sep 2024 03:40 |
| URI: | http://repository.its.ac.id/id/eprint/113797 |
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