Method for real time correction of ion concentration and Coulomb counting state-of-charge (SOC) in battery
AssigneeSamsung Electronics Co., Ltd.
InventorsPiyush Madhukarrao Tagade, Krishnan Seethalakshmy Hariharan, Tae Won Song
Life of this patent
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Abstract
A method includes estimating an average concentration of ions in electrodes of a battery and estimating a state-of-charge (SOC) of the battery by Coulomb counting, correcting the ion concentration based on a difference in predicted and measured cell voltages, and correcting the Coulomb counting SOC based on a relation between SOC estimated by Coulomb counting and the average concentration, and the difference in the predicted and measured cell voltages.
Claims13
A processor-implemented method, comprising:
- estimating an average concentration of ions in electrodes of a battery and estimating a state-of-charge (SOC) of the battery by Coulomb counting;
- correcting the ion concentration based on a difference in predicted and measured cell voltages;
- and
- correcting the Coulomb counting SOC based on a relation between SOC estimated by the Coulomb counting and the average concentration, and the difference in the predicted and measured cell voltages.
A battery management system, comprising:
- a processor configured to
- estimate an average concentration of ions in electrodes of the battery and estimate a state-of-charge (SOC) of the battery by Coulomb counting,
- correct the ion concentration based on a difference in predicted and measured cell voltages, and
- correct the Coulomb counting SOC based on a relation between SOC estimated by the Coulomb counting and the average concentration, and the difference in the predicted and measured cell voltages.
A non-transitory computer-readable storage medium storing instructions that, when executed by a processor, cause the processor to
- estimate an average concentration of ions in electrodes of a battery and estimating a state-of-charge (SOC) of the battery by Coulomb counting;
- correct ion concentration based on a difference in predicted and measured cell voltages;
- and
- correct the Coulomb counting SOC based on a relation between SOC estimated by the Coulomb counting and the average concentration, and the difference in the predicted and measured cell voltages.
Dependencies are inferred from the claim text.