Method for estimating a battery state

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United States of America

PATENT NO 12187138
APP PUB NO 20220234449A1
SERIAL NO

17596543

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Abstract

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A method for estimating a battery state of an energy storage system of a vehicle using a dual estimator. The energy storage system comprises a battery unit, and the dual estimator comprises a first estimator configured to estimate said battery state, the first estimator having first tuning parameters, a second estimator configured to track changes around nominal values of a set of battery parameters, the second estimator having second tuning parameters. The method comprises obtaining operational data of the energy storage system, feeding the operational data to the estimators, using the first estimator, estimating the battery state, using the second estimator, estimating changes around the nominal values of the set of battery parameters, and at least one of adaptively adjusting the first and/or second tuning parameters and adaptively adjusting the nominal values of the set of battery parameters to account for slow timescale variations arising due to ageing.

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Patent Owner(s)

Patent OwnerAddress
VOLVO TRUCK CORPORATION405 08 GÖTEBORG

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Altaf, Faisal Gothenburg, SE 23 8

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