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Development of a Matlab/Simulink Model for Monitoring Cell State-of-Health and State-of-Charge via Impedance of Lithium-Ion Battery Cells

Department of Energy and Automation Technology, Electrical Energy Storage Technology, Technical University of Berlin, Einsteinufer 11, 10587 Berlin, Germany
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Author to whom correspondence should be addressed.
Academic Editor: King Jet Tseng
Batteries 2022, 8(2), 8; https://doi.org/10.3390/batteries8020008
Received: 15 November 2021 / Revised: 13 January 2022 / Accepted: 21 January 2022 / Published: 21 January 2022
Lithium-ion battery cells not only show different behaviors depending on degradation and charging states, but also overcharge and overdischarge of cells shorten battery life and cause safety problems, thus studies aiming to provide an accurate state of a cell are required. Measurements of battery cell impedance are used for cell SoH and SoC estimation techniques, but it generally takes a long time for a cell in each state to be prepared and cell voltage response is measured when charging and discharging under each condition. This study introduces an electrical equivalent circuit model of lithium-ion cells developed in the MATLAB/Simulink environment. Cell SoC, SoH, temperature, and C-rate are considered for more accurate cell impedance prediction, and the simulation results are verified with the measurement results. The developed model is suitable for use in cell SoC and SoH monitoring studies by successfully outputting cell impedance through real-time prediction of cell voltage during discharge. View Full-Text
Keywords: lithium-ion battery; equivalent circuit model; MATLAB Simulink; impedance prediction lithium-ion battery; equivalent circuit model; MATLAB Simulink; impedance prediction
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MDPI and ACS Style

Kim, J.; Kowal, J. Development of a Matlab/Simulink Model for Monitoring Cell State-of-Health and State-of-Charge via Impedance of Lithium-Ion Battery Cells. Batteries 2022, 8, 8. https://doi.org/10.3390/batteries8020008

AMA Style

Kim J, Kowal J. Development of a Matlab/Simulink Model for Monitoring Cell State-of-Health and State-of-Charge via Impedance of Lithium-Ion Battery Cells. Batteries. 2022; 8(2):8. https://doi.org/10.3390/batteries8020008

Chicago/Turabian Style

Kim, Jonghyeon, and Julia Kowal. 2022. "Development of a Matlab/Simulink Model for Monitoring Cell State-of-Health and State-of-Charge via Impedance of Lithium-Ion Battery Cells" Batteries 8, no. 2: 8. https://doi.org/10.3390/batteries8020008

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