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. 12, 2020
Filed:
Oct. 19, 2012
Audi Ag, Ingolstadt, DE;
Timothy W. Patterson, Jr., West Hartford, CT (US);
Thomas H. Madden, Glastonbury, CT (US);
Robert M. Darling, South Windsor, CT (US);
Glenn M. Allen, Vernon, CT (US);
AUDI AG, Ingolstadt, DE;
Abstract
Fuel cell reactant flow field plates () are formed by extruding long sections () of carbonaceous material, either with straight grooves () formed by the extrusion die, or by end milling or arbor milling, and then cut to a proper size, including cuts in which the edges of the plates are at an angle with respect to the grooves. Cooler plates are formed of water-permeable material () in which hydrophobic material () is impregnated so as to define coolant channels (-) with inlets and outlets (). A two-layer cooler plate is formed by stamping voids in one layer () that define coolant flow channels () with inlets () and outlets () while a second layer () is stamped with voids () that define coolant inlet and exit headers; juxtaposition of the layers, with or without bonding, form the cooler plate. A cooler plate () is made by corrugating thin metal sheet, providing coolant channels () for cathodes and coolant channels () for anodes when interposed therebetween.