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. 04, 2017
Filed:
Feb. 21, 2013
Felix Blank, Constance, DE;
Martin Woehr, Weilheim, DE;
Felix Blank, Constance, DE;
Martin Woehr, Weilheim, DE;
Daimler AG, Stuttgart, DE;
Abstract
A method for operating a fuel cell stack () for a fuel cell system, in particular of a vehicle, in which by reversing the flow direction () of a coolant during a cooling operation, the coolant in the fuel cell stack () is initially conveyed in a first direction (). The coolant is subsequently conveyed in a second direction () which is at least substantially opposite to the first direction (). A time period, after the elapse of which the flow direction () is reversed, is changed during the cooling operation. In addition, a distance at which a coolant volume is situated from a heat source () that is present in the fuel cell stack () may be changed during the cooling operation. The invention further relates to a fuel cell system.