US 12,463,232 B2
Single cell and fuel cell stack with elastic structures for equal distribution of operating media
Oliver Keitsch, Heilbronn (DE); Nico Riede, Stuttgart (DE); Armin Siebel, Neckarsulm (DE); and Sebastian Voigt, Heilbronn (DE)
Assigned to AUDI AG, Ingolstadt (DE)
Appl. No. 18/003,136
Filed by AUDI AG, Ingolstadt (DE)
PCT Filed Oct. 25, 2021, PCT No. PCT/EP2021/079487
§ 371(c)(1), (2) Date Dec. 22, 2022,
PCT Pub. No. WO2022/090128, PCT Pub. Date May 5, 2022.
Claims priority of application No. 10 2020 128 559.0 (DE), filed on Oct. 30, 2020.
Prior Publication US 2023/0261239 A1, Aug. 17, 2023
Int. Cl. H01M 8/2483 (2016.01); H01M 8/0273 (2016.01); H01M 8/1004 (2016.01); H01M 8/242 (2016.01); H01M 8/2457 (2016.01); H01M 8/10 (2016.01)
CPC H01M 8/2483 (2016.02) [H01M 8/0273 (2013.01); H01M 8/1004 (2013.01); H01M 8/242 (2013.01); H01M 8/2457 (2016.02); H01M 2008/1095 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A single cell for a fuel cell stack, comprising:
an active region;
a media port present on a side away from the active region;
at least one plate formed with a flow field to supply an operating medium to the active region, which flow field is fluidically connected to the media port;
a membrane electrode assembly arranged in the active region adjacent to the at least one plate, and
a lamella provided lateral to the membrane electrode assembly, wherein the lamella extends laterally to at least partly cover a flow cross section of the media port, and wherein the lamella is formed to be elastically bendable by a force of the operating medium flowing axially through the media port during operation of the fuel cell stack in order to change a useful flow cross section of the media port as the lamella bends during operation.