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All Journal Jurnal INOVTEKSeri Elektro JAREE (Journal on Advanced Research in Electrical Engineering)
Puspita Ningrum
Politeknik Elektronika Negeri Surabaya
Control & Systems Engineering Electrical & Electronics Engineering Energy

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Battery Management System (BMS) Dengan State Of Charge (SOC) Metode Modified Coulomb Counting Puspita Ningrum; Novie Ayub Windarko; Suhariningsih Suhariningsih
INOVTEK - Seri Elektro Vol 1, No 1 (2019): INOVTEK Seri Elektro
Publisher : Politeknik Negeri Bengkalis

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (850.862 KB) | DOI: 10.35314/ise.v1i1.1022

Abstract

Baterai merupakan media penyimpanan energi listrik dalam bentuk energi kimia yang dapat dikonversikan menjadi daya. Dalam kasus yang ditemukan baterai mudah mengalami kerusakan dan memiliki life time yang pendek. Kerusakan pada baterai disebabkan karena penggunaan yang tidak ideal dan baterai tidak dilengkapi sistem proteksi dan monitoring, sehingga baterai tetap beroperasi meskipun dalam kondisi over-voltage, over-current dan over-heat saat charging dan ditambah mengalami under-voltage pada saat discharging. Pada jurnal ini disampaikan perancangan sistem BMS (Battery Management System) untuk 2 jenis baterai yaitu Lead Acid 12V 7Ah dan Li-ion 12V 4Ah. BMS memiliki tiga fungsi, yaitu computation , monitoring ,dan protection. Sensor tegangan, sensor arus ACS 712 dan sensor suhu DHT22 digunakan untuk mengirimkan informasi mengenai kondisi baterai ke mikrokontroler Arduino Mega 2560 sebagai pusat kendali. Akurasi pengukuran State Of Charge (SOC) mempunyai aspek yang penting dalam perancangan Battery Management System. Pengukuran  SOC secara tepat dapat menghindarkan baterai dari kondisi  overcharge dan undercharge.  Dari  hasil  pengujian diharapkan bahwa BMS mampu membaca nilai tegangan, arus, suhu, SOC, AH, dan WH. Hasil pembacaan parameter dapat tersimpan pada SD Card. Sistem proteksi pada BMS akan aktif ketika baterai dalam kondisi tidak ideal sehingga baterai tidak mudah rusak dan dapat menekan penurunan life time.
Estimation of State of Charge (SoC) Using Modified Coulomb Counting Method With Open Circuit Compensation For Battery Management System (BMS) Puspita Ningrum; Novie Ayub Windarko; Suhariningsih Suhariningsih
JAREE (Journal on Advanced Research in Electrical Engineering) Vol 5, No 1 (2021): April
Publisher : Department of Electrical Engineering ITS and FORTEI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/jaree.v5i1.150

Abstract

Battery is one of the important components in the development of renewable energy technology. This paper presents a method for estimating the State of Charge (SoC) for a 4Ah Li-ion battery. State of Charge (SoC) is the status of the capacity in the battery in the form of a percentage which makes it easier to monitor the battery during use. Coulomb calculations are widely used, but this method still contains errors during integration. In this paper, SoC measurement using Open Circuit Voltage Compensation is used for the determination of the initial SoC, so that the initial SoC reading is more precise, because if the initial SoC reading only uses a voltage sensor, the initial SoC reading is less precise which affects the next n second SoC reading. In this paper, we present a battery management system design or commonly known as BMS (Battery Management System) which focuses on the monitoring function. BMS uses a voltage sensor in the form of a voltage divider circuit and an ACS 712 current sensor to send information about the battery condition to the microcontroller as the control center. Besides, BMS is equipped with a protection relay to protect the battery. The estimation results of the 12volt 4Ah Li-ion battery SoC with the actual reading show an error of less than 1%.Keywords: battery management system, modified coulomb counting, state of charge
Co-Authors Novie Ayub Windarko Suhariningsih Suhariningsih