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. 11, 2025
Filed:
Jan. 05, 2022
Audi Ag, Ingolstadt, DE;
Oliver Keitsch, Heilbronn, DE;
Fabian Lippl, Mannheim, DE;
Armin Siebel, Neckarsulm, DE;
Sebastian Voigt, Heilbronn, DE;
AUDI AG, Ingolstadt, DE;
Abstract
A bipolar plate for a fuel cell comprises a first reactant flow field on its first plate side and a second reactant flow field on its second plate side, situated opposite the first plate side, wherein the flow fields comprise multiple flow ducts bounded by webs in an active region for one of the two reactants taking part in the fuel cell reaction, wherein each time the active region at the inlet side is fluidically connected via a distribution region running outside of the active region to an inlet-side media port for one of the two reactants, extending from the first plate side to the second plate side, and wherein each time the active region at the outlet side is fluidically connected via a collection region running outside the active region to an outlet-side media port extending from the first plate side to the second plate side. At least one of the flow fields is formed with webs at the inlet side in its active region, which have a bearing surface for a neighboring layer of the fuel cell which is larger than a bearing surface of the outlet-side webs, resulting from a duct division of at least some of the flow ducts which is present in the active region. A fuel cell stack having such a bipolar plate is also provided.