US 12,278,403 B2
Bipolar plate
Oliver Keitsch, Heilbronn (DE); and Fabian Lippl, Mannheim (DE)
Assigned to AUDI AG, Ingolstadt (DE)
Appl. No. 17/775,852
Filed by AUDI AG, Ingolstadt (DE)
PCT Filed Apr. 27, 2021, PCT No. PCT/EP2021/060927
§ 371(c)(1), (2) Date May 10, 2022,
PCT Pub. No. WO2021/233647, PCT Pub. Date Nov. 25, 2021.
Claims priority of application No. 102020113353.7 (DE), filed on May 18, 2020.
Prior Publication US 2023/0361318 A1, Nov. 9, 2023
Int. Cl. H01M 8/0258 (2016.01); H01M 8/0247 (2016.01); H01M 8/10 (2016.01)
CPC H01M 8/0258 (2013.01) [H01M 8/0247 (2013.01); H01M 2008/1095 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A bipolar plate, comprising:
a first inlet port;
a first flow field comprising a first plurality of ducts to connect the first inlet port to a first outlet port for a first reactant;
a second inlet port; and
a second flow field comprising a second plurality of ducts to connect the second inlet port to a second outlet port for a second reactant;
wherein at least one bypass duct is present at the margin of at least one of the flow fields;
wherein the bypass duct is associated with at least one flow connection branching off from the bypass duct into an adjacent marginal duct of the at least one of the flow fields; and
wherein a bypass blocker is arranged in the at least one bypass duct upstream from the outlet port to assist in directing reactant flow through the at least one flow connection to the adjacent marginal duct of the at least one of the flow fields.