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Estimating the state of charge of a battery

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2 Author(s)
Chiasson, J. ; Electr. & Comput. Eng. Dept., Univ. of Tennessee, Knoxville, TN, USA ; Vairamohan, B.

This brief considers the state of charge (SOC) estimation problem for electrochemical batteries. Using an electric circuit model of the battery given in the literature, it is shown how the open-circuit voltage (which is directly related to the SOC) can be estimated based on the terminal voltage and current measurements provided there is sufficient variation in the battery current.

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Control Systems Technology, IEEE Transactions on  (Volume:13 ,  Issue: 3 )