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:
Feb. 04, 2014
Filed:
May. 13, 2011
Applicants:
Sascha Schaefer, Selters, DE;
Andreas Koenekamp, Darmstadt, DE;
Inventors:
Sascha Schaefer, Selters, DE;
Andreas Koenekamp, Darmstadt, DE;
Assignee:
GM Global Technology Operations LLC, Detroit, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 31/36 (2006.01); H02J 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Systems and methods to determine a state of charge (SOC) of a battery using confidence values. SOC estimations are determined using a voltage-based estimation strategy and a current-based estimation strategy. Confidence values are also generated for the voltage-based SOC estimation and the current-based SOC estimation to quantify the amount of uncertainty associated with the SOC estimations. An overall SOC estimation is determined by comparing the confidence values and selecting the SOC estimation having the least amount of uncertainty.