The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 26, 2020
Filed:
Feb. 20, 2014
Fairchild Semiconductor Corporation, San Jose, CA (US);
The University of Connecticut, Farmington, CT (US);
Balakumar Balasingam, Storrs, CT (US);
Brian French, Portsmouth, NH (US);
Yaakov Bar-Shalom, Mansfield, CT (US);
Bharath Pattipati, Willimantic, CT (US);
Krishna Pattipati, Storrs, CT (US);
James Meacham, Gorham, ME (US);
Travis Williams, Scarborough, ME (US);
Gopi Vinod Avvari, Willimantic, CT (US);
Tai-Sik Hwang, Portland, ME (US);
Fairchild Semiconductor Corporation and University of Connecticut, Pheonix, AZ (US);
Abstract
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.