Fuel cell stack with improved end cell performance provided by higher modulus of elasticity
US-9853307-B2 · Dec 26, 2017 · US
Process for treating a bipolar plate for a fuel cell
US10622644B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10622644-B2 |
| Application number | US-201615572885-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 17, 2016 |
| Priority date | May 22, 2015 |
| Publication date | Apr 14, 2020 |
| Grant date | Apr 14, 2020 |
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- Title
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- Abstract
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Abstract
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A method for treating a bipolar plate for a fuel cell includes passing the bipolar plate between two rows of parallel straightening rollers. Action of the parallel straightening rollers on the bipolar plate result in opposite faces of the bipolar plate being on parallel planes.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for treating a bipolar plate for a fuel cell, the bipolar plate having opposite faces and including two stamped metal sheets fixed to each other and having grooves in the opposite faces, the method comprising: passing the bipolar plate between first and second rows of parallel straightening rollers, the parallel straightening rollers of the first row being, in a direction of movement of the bipolar plate being treated, offset with respect to the parallel straightening rollers of the second row, the grooves being deformed as the bipolar plate passes between the first and second rows of parallel straightening roller, resulting in the opposite faces of the bipolar plate being on parallel planes. 2. The method according to claim 1 , wherein the first and second rows of the parallel straightening rollers are set at a separation distance corresponding to a desired thickness to be achieved for the bipolar plate. 3. The method according to claim 2 , wherein the bipolar plate is moved between the first and second rows of the parallel straightening rollers in a direction perpendicular to a long-groove direction, the long-groove direction being a direction in which a greatest number of long grooves of the bipolar plate extends. 4. The method according to claim 3 , wherein the first and second rows of the parallel straightening rollers define parallel rolling planes. 5. The method according to claim 3 , wherein the two stamped metal sheets are fixed to each other by welding before the passing of the bipolar plate between the first and second rows of parallel straightening rollers. 6. The method according to claim 2 , wherein the first and second rows of the parallel straightening rollers define parallel rolling planes. 7. The method according to claim 1 , wherein the bipolar plate is moved between the first and second rows of the parallel straightening rollers in a direction perpendicular to a long-groove direction, the long-groove direction being a direction in which a greatest number of long grooves of the bipolar plate extends. 8. The method according to claim 7 , wherein the first and second rows of the parallel straightening rollers define parallel rolling planes. 9. The method according to claim 1 , wherein the first and second rows of the parallel straightening rollers define parallel rolling planes.
Assignees
Inventors
Classifications
Polymeric electrolyte materials · CPC title
- H01M8/0254Primary
corrugated or undulated · CPC title
having heating or cooling means, e.g. heaters or coolant flow channels · CPC title
Fuel cells with polymeric electrolytes · CPC title
of plates or sheets · CPC title
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Frequently asked questions
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- What does patent US10622644B2 cover?
- A method for treating a bipolar plate for a fuel cell includes passing the bipolar plate between two rows of parallel straightening rollers. Action of the parallel straightening rollers on the bipolar plate result in opposite faces of the bipolar plate being on parallel planes.
- Who is the assignee on this patent?
- Michelin & Cie
- What technology area does this patent fall under?
- Primary CPC classification H01M8/0254. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Apr 14 2020 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).