Metal support plate for fuel cell and method for manufacturing the same

A two-stage manufacturing process for metal support plates in hydrogen fuel cells using etching and laser penetration addresses slag generation and thermal effects, enhancing efficiency and yield by reducing processing time and maintaining mechanical strength.

JP2026116799APending Publication Date: 2026-07-13
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Patent Information

Application Number
JP2025234707
Authority / Receiving Office
JP · JP
Patent Type
Applications
Priority Date
2024-12-31
Filing Date
2025-12-05
Publication Date
2026-07-13

AI Technical Summary

Technical Problem

The current manufacturing process of metal support plates for hydrogen fuel cells generates a large amount of slag, requires long processing times, and reduces yield due to high temperature thermal effects during laser penetration.

Method used

A two-stage manufacturing process involving etching to form uniformly arranged hole arrangement portions followed by laser penetration to create micro-through holes, reducing the thickness of the micro-through-hole formation area and controlling the depth-to-width ratio to facilitate efficient and precise hole formation.

Benefits of technology

This method reduces laser penetration time, minimizes slag generation, and maintains mechanical strength while ensuring high product yield and quality by avoiding thermal effects, allowing for precise control of micro-through-hole formation.

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Abstract

This invention provides a metal support plate for fuel cells and a method for manufacturing the metal support plate, which solve the problems in the technology of forming a large number of micro-holes in a metal support plate substrate using a laser means. [Solution] A porous metal support plate having multiple evenly arranged hole arrangement areas formed on one surface of a thin metal sheet by etching, and numerous micro-through holes communicating with the hole arrangement areas formed on the other surface by laser penetration, with multiple micro-through holes evenly arranged in each of the hole arrangement areas, wherein after forming the patterned hole arrangement areas by etching in the first stage, the plate thickness of the micro-through hole formation area is appropriately reduced while maintaining the necessary mechanical strength, thereby facilitating the formation of micro-through holes by laser penetration in the second stage, effectively reducing slag generation after laser penetration, and reducing the thermal impact on the metal sheet material associated with laser processing.
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Citation Information

Patent Citations

  • Support member for fuel cell and support member for water electrolysis device

    JP2025172648A