Separator Plate Web Arching for Electrochemical Sealing
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Solution Overview
Problem
Existing electrochemical system separator plates face challenges in stability and manufacturing rejects due to precise positioning requirements for crossed channels, leading to weak connections and potential damage from coolant pressure, which can result in system failure.
Innovation Solution
A separator plate design featuring channels with sunk webs that create fluid connections and increased contact surfaces between plates, allowing for more robust connections and improved flow behavior, reducing the need for precise positioning and enhancing stability and service life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the channels of individual plates are arranged in a crossed manner, then the sealing and flow distribution are improved, but the positioning precision requirements increase and connection strength decreases
Solution Approach 1:
The web is deformed from a flat planar structure into a three-dimensional arched or curved structure. This dimensional change allows the web to span across the crossing channel while maintaining contact with both plates, effectively bridging the gap and improving sealing without requiring extremely precise positioning of the plates relative to each other.
Solution Approach 2:
The web's geometric parameters are changed by introducing arching or curvature. This parameter modification enables the web to accommodate positioning tolerances while maintaining effective sealing contact, thereby reducing the stringency of positioning precision requirements during manufacturing and assembly.
2Reliability
If the channels of individual plates are arranged in a crossed manner, then the flow distribution is optimized, but the connection strength at crossing regions decreases
Solution Approach 1:
By transforming the web into an arched or curved three-dimensional structure, the contact area between the web and the plates at crossing regions is significantly increased. This dimensional transformation distributes the coolant pressure loads over a larger area, preventing connection failure while maintaining optimized flow distribution through the crossed channels.
3Strength
If high positioning precision is maintained, then connection strength is sufficient, but manufacturing complexity and rejection rate increase
Solution Approach 1:
The web's geometric parameters (arching height, curvature radius) are optimized to provide sufficient connection strength and sealing effectiveness within normal positioning tolerances. This parameter optimization eliminates the need for high-precision positioning equipment and processes, thereby reducing manufacturing complexity and rejection rates while maintaining adequate connection strength.
Data Source
AI summary
A separator plate for an electrochemical system is described. The separator plate may have a first individual plate and a second individual plate which is connected to the first individual plate. The first individual plate may have two first channels for leading media, the first channels running next to one another, being shaped in the first individual plate and being separated from one another at least in sections by a web which is formed between the first channels. The second individual plate may have a second channel which is for leading media and is shaped in the second individual plate. The web which is formed between the first channels and the second channel which is shaped in the second individual plate are designed and arranged in a manner such that a projection of the second channel onto the first individual plate perpendicularly to the planar surface plane of the first individual plate crosses the web along a crossing region of the web.