Ananta, Hafizh Amas (2025) Studi Pengaruh C-Rate Dan Initial State Of Charge Terhadap Karakteristik Transient Heat Generation Pada Proses Discharging Baterai Pouch Lifepo4 20ah Menggunakan Pendinginan Phase Change Material. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Permasalahan polusi udara akibat emisi gas buang dari kendaraan bermesin bensin dan diesel telah mendorong perkembangan industri otomotif, dengan kendaraan listrik menjadi salah satu solusi paling optimal. Baterai sebagai sumber daya utama pada kendaraan listrik menghadirkan tantangan baru, terutama terkait dengan manajemen panas yang dihasilkan selama proses pengisian dan pengosongan daya. Salah satu jenis baterai yang banyak digunakan adalah baterai lithium iron phosphate (LiFePO4), yang memiliki keunggulan dalam hal daya tahan siklus dan kecepatan pengisian. Heat generation adalah panas yang dihasilkan oleh baterai selama proses discharging. Penelitian ini menganalisis pengaruh state of charge (SOC) awal dan C-rate terhadap generasi panas pada baterai Lithium Iron Phosphate (LiFePO4) 20 Ah, kemudian dilakukan analisa terkait efektivitas pendinginan menggunakan material perubahan
fasa (PCM). Baterai LiFePO4 cenderung menghasilkan panas berlebih selama proses discharging, yang dapat mempengaruhi kinerjanya. PCM digunakan untuk menyerap panas dan
menjaga suhu tetap dalam batas aman. Metodologi melibatkan pengujian proses discharging baterai dengan natural konveksi variasi SOC (50%, 75%, dan 100%) dan C-rate (0,5C, 1C, dan
2C), selanjutnya dilakukan simulasi variasi pendinginan PCM setiap variasi SOC dan C-rate dengan input volumetric heat generation fungsi dari waktu proses discharging yang didapatkan dari pengujian eksperimen variasi natural konveksi. Validasi dilakukan dengan membandingkan hasil eksperimen variasi PCM. Hasil didapatkan bahwasanya semakin besar nilai C-rate semakin besar nilai heat generation dan semakin kecil nilai initial SOC semakin cepat laju pembangkitan panas.
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Air pollution problems due to exhaust emissions from gasoline and diesel vehicles have driven the development of the automotive industry, with electric vehicles being one of the most optimal solutions. Batteries as the main power source in electric vehicles present new challenges, especially related to the management of heat generated during the charging and
discharging process. One type of battery that is widely used is the lithium iron phosphate (LiFePO4) battery, which has advantage in terms of cycle endurance and discharge rate. Heat
generation is the heat generated by the battery during the discharging process. This research analyzes the effect of initial state of charge (SOC) and C-rate on heat generation in 20 Ah Lithium Iron Phosphate (LiFePO4) batteries, then analyzes the effectiveness of cooling using phase change materials (PCM). LiFePO4 batteries tend to generate excess heat during the discharging process, which can affect their performance. PCMs are used to absorb the heat and keep the temperature within safe limits. The methodology involves testing the battery discharging process with natural convection variations of SOC (50%, 75%, and 100%) and C rate (0,5C, 1C, and 2C), then simulating PCM cooling variations for each SOC and C-rate
variation with volumetric heat generation input as a function of the discharging process time obtained from experimental testing of natural convection variations. Validation is done by
comparing the experimental results of PCM variations. The results show that the greater the C rate value the greater the heat generation value and the smaller the initial SOC value the faster the heat generation rate.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Baterai LiFePO4, Heat Generation, State of Charge & C-rate LiFePO4 Battery, Heat Generation, State of Charge, C-rate |
| Subjects: | T Technology > TJ Mechanical engineering and machinery > TJ165 Energy storage. T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL220 Electric vehicles and their batteries, etc. |
| Divisions: | Faculty of Industrial Technology > Mechanical Engineering > 21201-(S1) Undergraduate Thesis |
| Depositing User: | Hafizh Amas Ananta |
| Date Deposited: | 31 Jul 2025 03:21 |
| Last Modified: | 31 Jul 2025 03:21 |
| URI: | http://repository.its.ac.id/id/eprint/123958 |
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