Estimation of State of Charge (SoC) Using Modified Coulomb Counting Method With Open Circuit Compensation For Battery Management System (BMS)

Authors

  • Puspita Ningrum Politeknik Elektronika Negeri Surabaya
  • Novie Ayub Windarko Politeknik Elektronika Negeri Surabaya
  • Suhariningsih Suhariningsih Politeknik Elektronika Negeri Surabaya

DOI:

https://doi.org/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

References

Anggita Bayu, Dudi Darmawan dan Ahmad Qurthobi. “Perancangan Dan Implementasi Alat Ukur State Of Charge Sistem Pengawasan Pada Baterai Lead Acid Menggunakan Metode Open Circuit Voltage”. Universitas Telkom. Jurnal e-Proceeding of Engineering. April 2017.

Andica Dian Isnaini, Suwandi, Reza Fauzi Iskandar Prodi S1 Teknik Fisika, Fakultas Teknik Elektro. “Estimation State Of Charge Of Lithium Ion Battery Using Coulomb Counting Method”. Universitas Telkom. Jurnal e-Proceeding of Engineering. April 2017.

Kong Soon Ng, Chin Sien Moo, Yao Feng Huang, dan Yao Ching Hsieh, “An Enhanced coulomb couting for estimation state of charge and state of health of lead acid batteries”. Elsevier. November 2009.

Novie Ayub Windarko and Jaeho Choi. “SOC Estimation Based on OCV for NiMH Batteries Using an Improved Takacs Model”. Power Electronics Research Centre, Chungbuk National University. Maret 2010.

Alessandro Mariani, Thomas Stockley, Kary Thanapalan, Jonathan Williams, and Peter Stevenson, "Simple and Effective OCV Prediction Mechanism for VRLA Battery Systems," in Proceedings of the 3rd International Conference on Mechanical Engineering and Mechatronics, Prague, Czech Republic, Agustus 2014, p. No. 140.

M.Coleman, C.K Lee,WG Hurley. “State of health determination:two pulse load test for a vrla battery”. Power Electronics Research Centre, National University of Ireland, Galway,Ireland. Mei 2017.

C. S. Moo, K. S. Ng, Y. P. Chen, Y. C. Hsieh. Department of Electrical Engineering, National Sun Yat-sen. “ State Of Charge estimation with Open Circuit Voltage for Lead Acid Batteries”. University, Kaohsiung, Taiwan Department of Electrical Engineering, National Dong Hwa University, Hualien 97401, Taiwan. Institute of Electrical and Electronics Engineers. Januari 2019 (IEEE).

I. Bacchouce, S. Jemmali, A. Mlaya, B. Manai and N. E. B. Amara, “Implementation of an Improved Coulomb-Counting Algorithm Based on a Piecewise SOC-OCV Relationship for SOC Estimation of Li-Ion Battery”. Maret 2018.

Ines Baccouce, Asma Mlayah, dan Sabeus Jemmali, “Implementation of a Coulomb Counting Algorithm for SOC estimation of Li-Ion Battery for Multimedia Applications”. International Multi-Conference on Systems, Signals and Device. Desember 2015.

Zhang, Ruifeng & Xia, Bizhong & Li, Baohua & Cao, Libo & Lai, Yongzhi & Zheng, Weiwei & Wang, Huawen & Wang, Wei & Wang, Mingwang, “A Study on the Open Circuit Voltage and State of Charge Characterization of High Capacity Lithium-Ion Battery Under Different Temperature,” Energies, September 2018.

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Published

2021-04-01

Issue

Vol. 5 No. 1 (2021): April

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Articles

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