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- W4286498669 abstract "Abstract In this paper, a combined method is proposed to improve the accuracy of an electrical equivalent circuit model (EECM) and state‐of‐charge (SOC) estimation in situations where a lithium‐ion battery is frequently charged and discharged. To calculate the terminal voltage in the dynamic region, where charging and discharging are frequently repeated at 0.1 s intervals, a specific region is determined and historical weight is selected, based on the amount of charge in that region, to reflect the model parameters. The historical weights are applied to the charging and discharging parameters to improve the estimated performance of the EECM in estimating the terminal voltage of the battery. Also, the improved EECM is applied to the extended Kalman filter to improve the performance of SOC estimation. A 21,700 cylindrical lithium nickel manganese cobalt oxide‐type battery was used for verification, and the parameters required for modeling were extracted through experiments that were conducted to determine electrical characteristics. This paper compared two models not considering the history of charging or discharging characteristics with a model considering history to verify the accuracy of voltage and SOC estimation results. The result shows that the voltage and SOC estimation errors of the proposed combined method are the lowest in the three cases." @default.
- W4286498669 created "2022-07-22" @default.
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- W4286498669 date "2022-07-21" @default.
- W4286498669 modified "2023-10-10" @default.
- W4286498669 title "Elaborated EECM parameter identification reflecting adaptive weight for achieving a high‐accuracy SOC estimator" @default.
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- W4286498669 doi "https://doi.org/10.1002/ese3.1254" @default.
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