Fuel cell separator and fuel cell
US-2016248104-A1 · Aug 25, 2016 · US
Method for manufacturing separator
US11247258B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11247258-B2 |
| Application number | US-201916253559-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 22, 2019 |
| Priority date | Mar 2, 2018 |
| Publication date | Feb 15, 2022 |
| Grant date | Feb 15, 2022 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A method for manufacturing a separator that can effectively prevent warpage is provided. A method for manufacturing a separator according to an embodiment includes disposing a separator material including a flow path forming region between a first upper die and a first lower die, and pressing the separator material using the first upper die and the first lower die to thereby form a first recessed and projected shape in the flow path forming region and form a second recessed and projected shape outside the flow path forming region.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for manufacturing a separator, the method comprising: a step of disposing the separator including a flow path forming region between a first upper die and a first lower die; a first pressing step of pressing the separator using the first upper die and the first lower die to thereby form a first recessed and projected shape in the flow path forming region and form a second recessed and projected shape outside the flow path forming region; a step of disposing, after the first pressing step, the separator on which the first recessed and projected shape and the second recessed and projected shape are formed between a second upper die and a second lower die; and a second pressing step of pressing the separator using the second upper die and the second lower die to thereby crush the second recessed and projected shape, wherein, in the first pressing step, the second recessed and projected shape is formed outside the flow path forming region so that a recessed and projected height of the second recessed and projected shape is higher than a recessed and projected height of the first recessed and projected shape to thereby prevent the separator from being drawn in. 2. The method according to claim 1 , further comprising a step of punching out a region where the second recessed and projected shape is formed, wherein the second recessed and projected shape is formed in a manifold part of the separator. 3. The method according to claim 1 , wherein recesses and projections of the second recessed and projected shape are repeated along a direction inclined from a longitudinal direction of the separator in a plan view. 4. The method according to claim 1 , wherein the flow path forming region includes a flow path, and wherein in the pressing of the second pressing step, the flow path is formed by lowering the recessed and projected height of the first recessed and projected shape. 5. The method according to claim 1 , wherein the first pressing step is a drawing step.
Assignees
Inventors
Classifications
- B21D22/06Primary
having relatively-movable die parts · CPC title
characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant · CPC title
Punching blanks or articles with or without obtaining scrap (cutting nails or pins from strips or sheet material B21G3/26); Notching · CPC title
Manufacturing or production processes characterised by the final manufactured product · CPC title
- B21D53/00Primary
Making other particular articles (making wire fabrics B21F; making chains or chain parts B21L) · CPC title
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Frequently asked questions
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- What does patent US11247258B2 cover?
- A method for manufacturing a separator that can effectively prevent warpage is provided. A method for manufacturing a separator according to an embodiment includes disposing a separator material including a flow path forming region between a first upper die and a first lower die, and pressing the separator material using the first upper die and the first lower die to thereby form a first recess…
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification B21D22/06. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Feb 15 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).