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:
Jul. 30, 2013
Filed:
Aug. 10, 2010
Marc Reischmann, Wallertheim, DE;
Peter Andres, Ginsheim-Gustavsburg, DE;
Marc Reischmann, Wallertheim, DE;
Peter Andres, Ginsheim-Gustavsburg, DE;
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A battery circuit for an electric vehicle that employs a resistor that provides both a pre-charging function at system start-up and battery heating. The battery circuit includes a positive high voltage bus line electrically coupled to a positive terminal of the battery and a negative high voltage bus line electrically coupled to the negative terminal of the battery. A first end of the resistor is electrically coupled to the positive high voltage bus line, a first switch is electrically coupled between a second end of the resistor and the positive high voltage bus line and a second switch is electrically coupled between the second end of the resistor and the negative high voltage bus line. The pre-charging operation is provided when the first switch is closed and the second switch is opened and the heating function is provided when the second switch is closed and the first switch is opened.