Separator Plate Guide Channel Height Gradient for Electrochemical Sealing
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Solution Overview
Problem
Existing separator plates for electrochemical systems face a trade-off between mechanical stability and compactness, as openings in the bead flanks for media flow reduce mechanical stability and elasticity, which is detrimental for a compact stack design.
Innovation Solution
A separator plate design featuring guide channels that increase in height towards the bead arrangement, with a decreasing width, ensuring efficient media passage while minimizing deformation and protrusion during compression, thereby maintaining mechanical stability and compactness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If openings are made in the bead flanks for media flow, then media supply efficiency is improved, but mechanical stability and elasticity of the bead arrangement deteriorate
Solution Approach 1:
The guide channel is designed with varying cross-sectional dimensions along its length, creating local quality variations. The channel has larger cross-section at the inlet and smaller cross-section near the bead arrangement, optimizing media flow at different locations while maintaining structural integrity where openings are present in the bead flanks.
Solution Approach 2:
The guide channel extends in the vertical dimension between the inlet and the bead arrangement, rather than being a simple planar opening. This three-dimensional structure allows media to flow through the bead arrangement from above, achieving efficient media supply while the openings in the bead flanks remain minimal for structural support.
2Volume of moving object
If the bead arrangement is made shorter to minimize separator plate stack size, then compactness is improved, but mechanical stability deteriorates due to openings in the bead flanks
Solution Approach 1:
The guide channel's cross-sectional dimensions are varied along its length, with the height and width changing to optimize both media flow and structural stability. This parameter variation allows the bead arrangement to be shorter while maintaining mechanical stability through optimized stress distribution in the guide channel structure.
3Productivity
If guide channels are added to improve media passage through bead arrangement, then media supply efficiency is improved, but device complexity increases
Solution Approach 1:
The guide channel is integrated directly into the separator plate structure, merging the media guidance function with the separator plate's structural role. This eliminates the need for separate components and reduces overall device complexity while achieving efficient media passage through the bead arrangement.
Solution Approach 2:
The separator plate performs multiple functions: it provides structural separation between cells, contains the guide channel for media flow, and incorporates openings in the bead flanks for additional media passage. This multi-functionality reduces the need for separate components and simplifies the overall device structure.
Data Source
AI summary
A separator plate for an electrochemical system has at least one passage opening for forming a media channel for feeding or discharging media. At least one bead arrangement arranged around the at least one passage opening, for the purpose of sealing the passage opening is provided. At least one of the flanks of the bead arrangement has at least one opening for conducting a medium through the bead flank. At least one guide channel is connected, on an exterior of the bead arrangement, to the openings in the bead flank and is fluidically connected to a bead interior via the opening in the bead flank. The guide channel is designed such that a guide channel height perpendicularly to the flat surface plane of the separator plate increases at least in some sections in the direction of said bead arrangement.