Fuel cell
US-2015079495-A1 · Mar 19, 2015 · US
Fuel cell
US11437630B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11437630-B2 |
| Application number | US-201816625751-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 8, 2018 |
| Priority date | Jun 23, 2017 |
| Publication date | Sep 6, 2022 |
| Grant date | Sep 6, 2022 |
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- Title
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- Abstract
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- Assignees and inventors
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- First independent claim
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- CPC / IPC classifications
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Abstract
Official abstract text for this publication.
The invention relates to a fuel cell (2) comprising at least one membrane/electrode unit (10) comprising a first electrode (21) and a second electrode (22), which electrodes are separated from one another by a membrane (18), and comprising at least one bipolar plate (40) which comprises a first distribution region (50) for distributing a fuel to the first electrode (21) and a second distribution region (60) for distributing an oxidation agent to the second electrode (22). A distribution unit (30) is provided in at least one of the distribution regions (50, 60) and has at least one flat woven fabric (80), wherein the flat woven fabric (80) is deformed in such a way that raised portions (32) of the woven fabric (80) touch one of the electrodes (21, 22).
First claim
Opening claim text (preview).
The invention claimed is: 1. A fuel cell ( 2 ) comprising at least one membrane-electrode assembly ( 10 ) having a first electrode ( 21 ) and a second electrode ( 22 ) which are separated from one another by a membrane ( 18 ), at least one bipolar plate ( 40 ) which comprises a first distribution region ( 50 ) for distributing a fuel to the first electrode ( 21 ) and a second distribution region ( 60 ) for distributing an oxidant to the second electrode ( 22 ), and a distribution unit ( 30 ) in at least one of the distribution regions ( 50 , 60 ), wherein the distribution unit comprises at least one flat woven fabric ( 80 ), wherein the flat woven fabric ( 80 ) has been deformed in such a way that raised regions ( 32 ) of the woven fabric ( 80 ) touch one of the electrodes ( 21 , 22 ), wherein the flat woven fabric ( 80 ) has a corrugation-like deformation, wherein the raised regions ( 32 ) of the woven fabric ( 80 ) are configured as corrugation peaks, and wherein the raised regions ( 32 ) of the woven fabric ( 80 ) extend at right angles to a flow direction ( 43 , 44 ) of the fuel or of the oxidant. 2. The fuel cell ( 2 ) as claimed in claim 1 , characterized in that the woven fabric ( 80 ) is porous and electrically conductive. 3. The fuel cell ( 2 ) as claimed in claim 1 , characterized in that the woven fabric ( 80 ) has at least two different types of fibers. 4. The fuel cell ( 2 ) as claimed in claim 1 , characterized in that the distribution unit ( 30 ) comprises at least two woven fabrics ( 80 ) which are stacked on top of one another, with the raised regions ( 32 ) of the at least two woven fabrics ( 80 ) being offset relative to one another. 5. A fuel cell ( 2 ) comprising at least one membrane-electrode assembly ( 10 ) having a first electrode ( 21 ) and a second electrode ( 22 ) which are separated from one another by a membrane ( 18 ), at least one bipolar plate ( 40 ) which comprises a first distribution region ( 50 ) for distributing a fuel to the first electrode ( 21 ) and a second distribution region ( 60 ) for distributing an oxidant to the second electrode ( 22 ), and a distribution unit ( 30 ) in at least one of the distribution regions ( 50 , 60 ), wherein the distribution unit comprises at least one flat woven fabric ( 80 ), wherein the flat woven fabric ( 80 ) has been deformed in such a way that raised regions ( 32 ) of the woven fabric ( 80 ) touch one of the electrodes ( 21 , 22 ), wherein the flat woven fabric ( 80 ) has a corrugation-like deformation, wherein the raised regions ( 32 ) of the woven fabric ( 80 ) are configured as corrugation peaks, and wherein the raised regions ( 32 ) of the woven fabric ( 80 ) extend at an inclination to a flow direction ( 43 , 44 ) of the fuel or of the oxidant. 6. The fuel cell ( 2 ) as claimed in claim 5 , characterized in that the woven fabric ( 80 ) is porous and electrically conductive. 7. The fuel cell ( 2 ) as claimed in claim 5 , characterized in that the woven fabric ( 80 ) has at least two different types of fibers. 8. The fuel cell ( 2 ) as claimed in claim 5 , characterized in that the distribution unit ( 30 ) comprises at least two woven fabrics ( 80 ) which are stacked on top of one another, with the raised regions ( 32 ) of the at least two woven fabrics ( 80 ) being offset relative to one another.
Assignees
Inventors
Classifications
Carbonaceous material · CPC title
Fuel cells · CPC title
characterised by membrane-electrode assemblies [MEA] (H01M8/12 takes precedence) · CPC title
- H01M8/0232Primary
Metals or alloys · CPC title
- H01M8/0254Primary
corrugated or undulated · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US11437630B2 cover?
- The invention relates to a fuel cell (2) comprising at least one membrane/electrode unit (10) comprising a first electrode (21) and a second electrode (22), which electrodes are separated from one another by a membrane (18), and comprising at least one bipolar plate (40) which comprises a first distribution region (50) for distributing a fuel to the first electrode (21) and a second distributio…
- Who is the assignee on this patent?
- Bosch Gmbh Robert
- What technology area does this patent fall under?
- Primary CPC classification H01M8/0232. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Sep 06 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).