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. 26, 2013
Filed:
Jul. 27, 2010
Barney D. Nefcy, Novi, MI (US);
Marvin P. Kraska, Dearborn, MI (US);
Mark Ferrel, Brighton, MI (US);
Walt J. Ortmann, Saline, MI (US);
Barney D. Nefcy, Novi, MI (US);
Marvin P. Kraska, Dearborn, MI (US);
Mark Ferrel, Brighton, MI (US);
Walt J. Ortmann, Saline, MI (US);
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
Systems and methods provide voltage stability for a low voltage bus coupling a DC/DC converter with a low voltage load comprising one or more vehicle accessories. The DC/DC converter can be coupled to a high voltage battery, the low voltage load, and a starter circuit configured for starting an engine. Prior to engaging a starter motor to start the engine, the DC/DC converter can be isolated from the starter circuit so as to be shielded from any large current demand during an engine start event. While starting the engine, the starter motor can draw current from a secondary battery, while the DC/DC converter provides a sufficient and stable voltage to the vehicle low voltage accessories. After completion of the engine start event, the DC/DC converter can be recoupled to the starter circuit, allowing the high voltage battery to charge the secondary battery.