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:
May. 05, 2015
Filed:
Oct. 14, 2010
Steven J. Vance, Shelby Township, MI (US);
John T. Guerin, Bloomfield, MI (US);
Andrew H. Leutheuser, Sunnyvale, CA (US);
John C. Mentzer, Waterford, MI (US);
Steven J. Vance, Shelby Township, MI (US);
John T. Guerin, Bloomfield, MI (US);
Andrew H. Leutheuser, Sunnyvale, CA (US);
John C. Mentzer, Waterford, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A battery cell by-pass circuit that has particular application for by-passing cells in a high voltage battery for a vehicle. The battery includes a plurality of battery cells electrically coupled in series. The by-pass circuit includes a first switch electrically coupled in series with one or more of the battery cells, a by-pass line electrically coupled around the one or more battery cells and a second switch electrically coupled in the by-pass line and in parallel with the one or more battery cells. During normal cell operation, the first switch is closed and the second switch is open so that current flows through the one or more battery cells. If the one or more battery cells fail or are failing, the first switch is opened and the second switch is closed so that current by-passes the one or more cells and they are removed from the battery circuit.