Fuel cell separator
US-2022140357-A1 · May 5, 2022 · US
Separator for fuel cell and method for manufacturing separator
US2022190360A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2022190360-A1 |
| Application number | US-202117644071-A |
| Country | US |
| Kind code | A1 |
| Filing date | Dec 13, 2021 |
| Priority date | Dec 15, 2020 |
| Publication date | Jun 16, 2022 |
| Grant date | — |
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Abstract
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A method for manufacturing a separator for a fuel cell includes: a roughening step of forming a roughened region in a surface of a separator body; and a molding step of molding a gasket on the surface of the separator body. In the molding step, the gasket is molded in an area including at least a part of the roughened region.
First claim
Opening claim text (preview).
What is claimed is: 1 . A method for manufacturing a separator for a fuel cell, the method comprising: a roughening step of forming a roughened region in a surface of a separator body; and a molding step of molding a gasket on the surface of the separator body, wherein in the molding step, the gasket is molded in an area including at least a part of the roughened region. 2 . The method for manufacturing a separator for a fuel cell according to claim 1 , wherein an arithmetical mean height (Sa) of the roughened region falls within a range of from 0.1 μm to 2.5 μm. 3 . The method for manufacturing a separator for a fuel cell according to claim 1 , wherein an arithmetical mean height (Sa) of the roughened region falls within a range of from 0.5 μm to 1.5 μm. 4 . The method for manufacturing a separator for a fuel cell according to claim 1 , wherein: in the roughening step, the roughened region is formed in a looped shape along the surface of the separator body; and in the molding step, the gasket is molded in a looped shape along the roughened region extending in a looped shape. 5 . The method for manufacturing a separator for a fuel cell according to claim 4 , wherein: the separator body includes a through-hole; and in the roughening step, the roughened region is formed in a looped shape such that the roughened region surrounds the through-hole. 6 . The method for manufacturing a separator for a fuel cell according to claim 4 , wherein an inner edge of the roughened region extending in a looped shape is located on an outer side relative to an inner edge of the gasket extending in a looped shape. 7 . The method for manufacturing a separator for a fuel cell according to claim 6 , wherein the inner edge of the roughened region extending in a looped shape is located on the outer side relative to a center between the inner edge and an outer edge of the gasket extending in a looped shape. 8 . The method for manufacturing a separator for a fuel cell according to claim 1 , wherein the roughening step includes a step of irradiating the surface of the separator body with a laser. 9 . The method for manufacturing a separator for a fuel cell according to claim 1 , wherein the roughening step includes a first roughening step of performing processing for providing a first roughness to the surface of the separator body, and a second roughening step of performing processing for providing a second roughness that is smaller than the first roughness to a region with the first roughness provided. 10 . The method for manufacturing a separator for a fuel cell according to claim 9 , wherein: the processing for providing the first roughness is etching or blasting; and the processing for providing the second roughness is laser irradiation processing. 11 . A separator for a fuel cell, the separator comprising: a separator body; and a gasket provided on a surface of the separator body, wherein the surface of the separator body includes a roughened region, and at least a part of the gasket is located on the roughened region.
Assignees
Inventors
Classifications
O-rings · CPC title
- H01M8/0286Primary
Processes for forming seals · CPC title
Details of groupings of fuel cells · CPC title
Collectors; Separators, e.g. bipolar separators; Interconnectors · CPC title
characterised by the form (characterised by a channel configuration H01M8/0258) · CPC title
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Frequently asked questions
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- What does patent US2022190360A1 cover?
- A method for manufacturing a separator for a fuel cell includes: a roughening step of forming a roughened region in a surface of a separator body; and a molding step of molding a gasket on the surface of the separator body. In the molding step, the gasket is molded in an area including at least a part of the roughened region.
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M8/0286. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Jun 16 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).