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:
Nov. 04, 2014
Filed:
Sep. 30, 2010
Joseph D. Rainville, Caledonia, NY (US);
Joseph C. Gerzseny, Spencerport, NY (US);
Aaron Rogahn, Rochester, NY (US);
Matthew C. Kirklin, Coleman, MI (US);
Joseph D. Rainville, Caledonia, NY (US);
Joseph C. Gerzseny, Spencerport, NY (US);
Aaron Rogahn, Rochester, NY (US);
Matthew C. Kirklin, Coleman, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A method for increasing the temperature of a cooling fluid used to control the temperature of a fuel cell stack at a system freeze start-up. The method includes determining that the cooling fluid is frozen or nearly frozen, and if so, deactivating excessive power draw on the fuel cell stack to minimize stack waste heat and activating a cooling fluid heater to heat the cooling fluid. Once it is determined that the cooling fluid is not frozen or is flowing, then the method initiates a normal system start-up.