Brooks Kushman P.C.
Nonlinear observer for battery state of charge estimation
A method of controlling an electric vehicle including an internal combustion engine, a battery having a state of charge (SOC) and an open circuit voltage (OCV), is provided. The method includes establishing a system for estimating battery SOC. The system includes an OCV estimation subsystem including an adaptive observer for estimating battery OCV. Estimated battery OCV is related to estimated battery SOC by a nonlinear mapping. An output is generated based on the estimated battery SOC.
Ford Global Technologies, LLC
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G01R B60L Y02T G01R
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Yonghua
Li