Electrolysis Cell Separator Contact Patterns for Sealing and Cooling
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Solution Overview
Problem
The existing configuration of water electrolysis cells with intersecting channels between anode and cathode separators compromises electrical contact area and cooling performance, leading to reduced safety, reliability, and sealing efficiency.
Innovation Solution
The introduction of contact patterns on the first separator channels, which intersect with the second separator channels, enhances the electrical contact area and sealing performance by ensuring additional contact points beyond the basic intersection points, thereby improving the structural rigidity and alignment of the separators.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the first channel of the anode separator and the second channel of the cathode separator are provided in directions intersecting each other, then sealing performance between separators is improved, but contact area between separators decreases
Solution Approach 1:
The invention divides the contact interface into two distinct functional zones: sealing regions where the intersecting channels meet to prevent fluid leakage, and contact regions where the separator surfaces directly touch to ensure electrical conductivity and heat transfer. This segmentation allows each region to optimize its specific function without compromising the other.
Solution Approach 2:
The invention applies different quality requirements to different areas of the separator interface. The sealing regions require precise geometric alignment and fluid-tight construction, while the contact regions require high surface conductivity and thermal contact. This local differentiation resolves the contradiction by allowing each area to be optimized for its specific purpose.
2Reliability
If the contact area between separators is reduced, then sealing performance is enhanced, but electric current per unit area is restricted
Solution Approach 1:
The invention separates the functional responsibilities of the separator interface into distinct sealing zones and electrical contact zones. The sealing zones are positioned at channel intersections to prevent fluid leakage, while the contact zones maintain direct separator-to-separator conductivity paths. This segmentation allows the system to achieve both high sealing performance and adequate electrical current density.
Solution Approach 2:
The separator structure serves multiple functions simultaneously: the intersecting channel configuration provides both sealing action and defines contact regions, while the separator bodies provide both structural support and electrical conductivity. This multi-functionality allows the system to resolve the contradiction between sealing performance and electrical current generation.
3Reliability
If the contact area between separators is reduced, then sealing performance is improved, but cooling performance deteriorates
Solution Approach 1:
The invention divides the separator interface into sealing regions at channel intersections and thermal contact regions where separator surfaces directly touch. This segmentation ensures that fluid sealing and thermal conduction occur through different mechanisms and locations, allowing the system to achieve both high sealing performance and adequate cooling performance simultaneously.
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
This configuration increases the electric current per unit area and improves cooling performance while maintaining sealing integrity, enhancing the overall safety, reliability, and efficiency of the electrochemical device.
Implementation Method 1
a perfluorinated sulfonic acid ionomer-based electrolyte membrane capable of moving hydrogen ions (protons)
Implementation Method 2
contact patterns provided on the first separator and disposed on the first channel so as to be in contact with the second separator
Implementation Method 3
a first channel of the anode separator through which a target fluid (e.g., water) flows and a second channel of the cathode separator through which a target fluid (e.g., hydrogen) flows are provided in directions intersecting each other
Data Source
AI summary
An embodiment electrochemical device includes a first separator including a first channel and a first land disposed in a first direction, a second separator including a second channel and a second land disposed in a second direction intersecting the first direction, the second separator being stacked on the first separator, and contact patterns provided on the first separator and disposed on the first channel so as to be in contact with the second separator.