Fadillah, Mochamad Farhan (2026) ANALISIS SISTEM PENYEIMBANG ARUS RENDAH PADA BATERAI LITHIUM ION MENGGUNAKAN SISTEM PENGISIAN MODULAR. Bachelor thesis, Institut Teknologi Kalimantan.
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Abstract
Ketidakseimbangan tegangan antar sel pada baterai lithium-ion dapat menurunkan kapasitas efektif, mempercepat penurunan performa, serta mengganggu kestabilan sistem penyimpanan energi. Penelitian ini bertujuan untuk menganalisis sistem penyeimbang arus rendah pada baterai lithium-ion menggunakan sistem pengisian modular. Sistem yang dirancang menggunakan baterai lithium-ion tipe 18650, sensor arus ACS712, sensor tegangan, Arduino Uno, dan charger sebagai sumber pengisian. Parameter yang diamati meliputi arus, tegangan, waktu pengujian, kapasitas aktual, dan State of Charge (SoC). Metode penelitian dilakukan melalui perancangan sistem monitoring, kalibrasi sensor, pengambilan data charge dan discharge, serta perhitungan kapasitas menggunakan metode Coulomb Counting. Pengujian dilakukan pada variasi arus 0,5 A, 0,2 A, dan 0,1 A untuk mengetahui pengaruh besar arus terhadap kestabilan tegangan dan kapasitas baterai. Hasil kalibrasi menunjukkan bahwa sensor arus ACS712 memiliki rata-rata error sebesar 2,11%, sedangkan sensor tegangan memiliki rata-rata error sebesar 1,81%. Nilai tersebut menunjukkan bahwa sensor masih layak digunakan dalam proses monitoring baterai. Hasil pengujian charge menunjukkan bahwa seluruh variasi arus mampu menaikkan tegangan baterai hingga mendekati 4,20 V. Arus 0,5 A menghasilkan proses pengisian paling cepat, tetapi perubahan tegangan lebih tajam. Arus 0,2 A menunjukkan karakteristik menengah, sedangkan arus 0,1 A menghasilkan kenaikan tegangan yang lebih lambat, halus, dan stabil. Pada proses discharge, arus yang lebih kecil menghasilkan penurunan tegangan yang lebih bertahap. Hasil Coulomb Counting menunjukkan adanya penurunan kapasitas pada setiap perulangan, namun masih berada pada kategori sangat stabil hingga cukup stabil. Berdasarkan hasil tersebut, arus 0,1 A menjadi variasi terbaik untuk analisis sistem penyeimbang arus rendah karena menghasilkan perubahan tegangan yang paling stabil.
| Item Type: | Thesis (Bachelor) |
|---|---|
| Subjects: | T Technology > T Technology (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Divisions: | Jurusan Teknologi Industri dan Proses > Teknik Elektro |
| Depositing User: | Mochamad farhan Fadillah |
| Date Deposited: | 17 Jul 2026 06:57 |
| Last Modified: | 17 Jul 2026 06:57 |
| URI: | http://repository.itk.ac.id/id/eprint/27161 |
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