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. 30, 2005
Filed:
Feb. 25, 2003
Nick S. Kapsokavathis, Shelby Township, MI (US);
David W. Walters, Sterling Heights, MI (US);
Marvin E. Carpenter, Clarkston, MI (US);
Nick S. Kapsokavathis, Shelby Township, MI (US);
David W. Walters, Sterling Heights, MI (US);
Marvin E. Carpenter, Clarkston, MI (US);
General Motors Corporation, Detroit, MI (US);
Abstract
A regulator voltage control includes measuring a current of a battery, determining a state of charge (SOC) of the battery based on the current, and determining a nominal optimum charging voltage as a function of the SOC of the battery. The nominal optimum charging voltage is converted to a % duty cycle, and a generator is operated relative to the % duty cycle for charging the battery. The nominal optimum charging voltage is reduced when either a battery charge current is below a predetermined value, or a current drawing accessory is turned on.