University of Connecticut

Tai-Sik Hwang

Krishna R Pattipati

James Meacham

Yaakov Bar-Shalom

Balakumar Balasingam

Bharath Pattipati

Travis Williams

Brian French

Gopi Vinod Avvari

A method includes calculating a first estimated state of charge (SOC) of a battery at a first time, receiving a voltage value representing a measured voltage across the battery at a second time, calculating a filter gain at the second time, and calculating a second estimated SOC of the battery at the second time based on the first estimated SOC, the voltage value, and the filter gain. Another method includes storing, in a memory, a library of equivalent circuit models representing a battery, determining an operational mode of a battery based on a load associated with the battery, selecting one of the equivalent circuit models based on the determined operational mode, and calculating a state of charge of charge (SOC) of the battery using the selected equivalent circuit model.

Battery state of charge tracking, equivalent circuit selection and benchmarking

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Portland, ME, United States of America

Tai-Sik Hwang