Electrolysis Cell Frame Segmented Distribution and Sealing
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Solution Overview
Problem
Conventional electrolysis block structures are complex in terms of functionality and manufacturing, with overlapping distribution and sealing structures complicating design and assembly, and requiring separate cell frames for anode and cathode electrodes.
Innovation Solution
A cell frame design where the distribution channel structure is exclusively on one side and the sealing structure on the other, with through-bores parallel to the cell frame plane to avoid interference, allowing for simpler manufacturing and operation, and enabling bipolar plates to be placed between electrolysis membranes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate cell frames are provided for anode and cathode electrodes with overlapping distribution and sealing structures, then the electrolysis block can be constructed with conventional stack design, but the device complexity and manufacturing complexity increase significantly
Solution Approach 1:
The cell frame is divided into functionally separate regions: a first main side dedicated to the distribution channel structure for media supply and discharge, and a second main side dedicated to the sealing structure. This segmentation eliminates the overlap between distribution and sealing structures that plagues conventional designs, thereby reducing device complexity while maintaining compatibility with stack design construction methods.
Solution Approach 2:
The sealing structure is extracted and positioned exclusively on the second main side of the cell frame, separate from the distribution channel structure on the first main side. This extraction eliminates the interference and complexity arising from overlapping structures, allowing each structure to be optimized independently for its specific function.
2Reliability
If distribution channel structure and sealing structure are formed on both sides of the cell frame, then complete media supply and sealing can be achieved, but the manufacturing complexity and design difficulty increase
Solution Approach 1:
The cell frame is segmented such that the distribution channel structure is formed only on the first main side and the sealing structure is formed only on the second main side. This one-sided arrangement for each function simplifies manufacturing processes compared to forming both structures on both sides, while still achieving complete media supply and sealing functionality through the coordinated design of the two main sides.
Solution Approach 2:
Different regions of the cell frame are assigned different functional qualities: the first main side is optimized for media distribution with channel structures, while the second main side is optimized for sealing with sealing structures. This local differentiation allows each side to be manufactured with specialized processes appropriate to its function, reducing overall manufacturing complexity.
3Ease of operation
If through-bores extend perpendicular to the cell frame plane, then media can be supplied to the half-space, but interference with sealing structure and increased manufacturing complexity occur
Solution Approach 1:
The through-bores are designed with an asymmetric orientation relative to the cell frame plane, extending at an angle rather than perpendicular to it. This asymmetric arrangement allows the through-bores to pass through the cell frame and provide media supply to the half-space while clearing the sealing structure on the second main side, thereby eliminating interference while maintaining media supply functionality.
Solution Approach 2:
The orientation of the through-bores is changed from a simple perpendicular direction to an angled direction that has components both perpendicular to and parallel with the cell frame plane. This dimensional adjustment allows the through-bores to achieve their media supply function while avoiding interference with the sealing structure, as the angled path clears the sealing elements on the second main side.
Data Source
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AI summary
The invention relates to a cell frame for an electrolysis or fuel cell block, comprising a receiving opening (1) designed to receive an electrolysis or fuel cell membrane, a plurality of collecting channel openings (2) designed for media supply and media discharge through the cell frame, a distribution channel structure (3) designed for media supply from a respective supplying collecting channel opening to an associated half-space adjacent to the receiving opening and for media discharge from this half-space to an associated, discharge collecting channel opening, and a sealing structure designed for sealing the cell frame to the outside and/or the receiving opening and/or the collecting channel openings, as well as to an electrolysis block constructed with such cell frames.According to the invention, the distribution channel structure (3) comprises a groove channel structure (6) formed on a first main surface (8a) of the cell frame and a plurality of through-holes (7) extending with a directional component parallel to a cell frame plane between the groove channel structure and the associated half-space (5). The sealing structure (4) is formed on a second main surface of the cell frame opposite the first main surface.