Hee-Sung Lim, Sang-Hyuk Lee, and Kyo-Beum Lee, "SOC Estimation of an LFP Battery using Extended Kalman Filter with Extracted Prameter," The Transactions of the Korean Institute of Electrical Engineers, vol. 72, no. 11, pp. 1372-1378, Nov. 2023. > Paper

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Domestic Journals Hee-Sung Lim, Sang-Hyuk Lee, and Kyo-Beum Lee, "SOC Estimation of an LFP Battery using Extended Kalman Filter with Extracted Prameter," The Transactions of the Korean Institute of Electrical Engineers, vol. 72, no. 11, pp. 1372-1378, Nov. 2023.

2023

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This paper proposes a method to estimate SOC(State of charge) by extracting parameters for each circuit element of an LFP(LiFePO4) battery 

equivalent circuit model and combining the Extended Kalman Filter and coulomb counting method. A lithium battery cell is generally modeled using 

an equivalent circuit, and parameters for each circuit element of the battery model can be extracted using pulse charging and discharging curves. 

Those curves are collected experimentally to characterize battery performance at various operating points. Numerical optimization algorithms are 

repeatedly performed in computer simulation to minimize errors in battery models and experimental data. SOC is estimated using extracted 

parameters and the Extended Kalman Filter algorithm.

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