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:
Aug. 08, 2017
Filed:
Jun. 22, 2010
Jian Lin, Beverly Hills, MI (US);
Xidong Tang, Sterling Heights, MI (US);
Brian J. Koch, Berkley, MI (US);
Joseph M. Lograsso, Troy, MI (US);
Damon R. Frisch, Troy, MI (US);
Rezina S. Nabi, Troy, MI (US);
Jian Lin, Beverly Hills, MI (US);
Xidong Tang, Sterling Heights, MI (US);
Brian J. Koch, Berkley, MI (US);
Joseph M. Lograsso, Troy, MI (US);
Damon R. Frisch, Troy, MI (US);
Rezina S. Nabi, Troy, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A system and method for estimating internal parameters of a lithium-ion battery to provide a reliable battery state-of-charge estimate. The method uses a two RC-pair equivalent battery circuit model to estimate the battery parameters, including a battery open circuit voltage, an ohmic resistance, a double layer capacitance, a charge transfer resistance, a diffusion resistance and a diffusion capacitance. The method further uses the equivalent circuit model to provide a difference equation from which the battery parameters are adapted, and calculates the battery parameters from the difference equation.