Patent ID: 11923570
Assignee: EKPO FUEL CELL TECHNOLOGIES GMBH
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  C  Y | IPC H

Claim 11:
12. A method for producing an assembly for an electrochemical device, which comprises at least one gas diffusion layer and at least one sealing element produced on the gas diffusion layer, wherein the sealing element comprises an inner sealing region fixed to the gas diffusion layer and an outer sealing region connected to the gas diffusion layer via the inner sealing region,
wherein the inner sealing region has a flow field sealing line, which extends around the gas diffusion layer, and
wherein the outer sealing region has at least one medium channel sealing line, which extends around a medium through-opening of the sealing element,
wherein the method comprises the following:
producing at least one relief region in the sealing element between the flow field sealing line of the inner sealing region and the at least one medium channel sealing line of the outer sealing region;

wherein
a) the relief region comprises a relief opening extending through the sealing element
and/or
b) the relief region has a smallest height, which is smaller than one fourth of the greatest height of the inner sealing region and is smaller than one fourth of the greatest height of the outer sealing region;
wherein the sealing element comprises a plurality of relief regions, which follow one another along a peripheral direction of the gas diffusion layer.