Separator Plate Seal Profile for Uneven Channel Compression
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Solution Overview
Problem
Existing separator plates in electrochemical systems often experience unreliable fluidic sealing due to uneven compression of seals, which can be exacerbated by the large distribution regions with channels on the plates.
Innovation Solution
The proposed solution involves a separator plate with a topographically shaped seal that has a varying height profile, at least in sections, to compensate for the unevenness of the channels and webs on adjacent plates, ensuring even support and improved sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If seals are used to prevent fluid from exiting or entering through openings on the wrong side of the separator plate, then fluidic sealing is achieved, but the sealing effect is not sufficiently reliable due to uneven compression
Solution Approach 1:
The seal is designed with a topographically structured outer surface that has locally varying properties (protrusions and recesses) to match the corresponding topography on the adjacent separator plate. This local adaptation ensures uniform contact and compression across the entire sealing surface, transforming the uniform seal into one with spatially varying geometry that compensates for manufacturing tolerances and uneven compression forces in the electrochemical system stack.
2Productivity
If large distribution regions with channels are present on separator plates to supply fluids, then fluid distribution is improved, but the unevenness of channels and webs causes uneven seal compression
Solution Approach 1:
The seal is pre-formed with a topographically structured outer surface that anticipates and compensates for the unevenness caused by the distribution regions with channels and webs. This preliminary structuring of the seal surface ensures that when the seal is installed and compressed, the varying heights (protrusions and recesses) will make contact with the corresponding features on the separator plate at uniform compression levels, preventing premature failure and ensuring consistent sealing throughout the stack assembly.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The topographically configured seal achieves a more reliable sealing effect by evenly distributing pressure and adapting to the uneven surfaces of adjacent plates, enhancing the overall fluidic sealing of electrochemical systems.
Implementation Method 1
a topographically configured seal which achieves a more reliable sealing effect by evenly distributing pressure and adapting to the uneven surfaces of adjacent plates
Data Source
AI summary
The present disclosure relates to a separator plate for an electrolyzer or for another electrochemical system. The separator plate has a seal along an edge-region of a through-opening, with an outer surface which is topographical at least in sections. The present disclosure also relates to an electrochemical system.