Fluid flow plate for a fuel cell
US-2015333343-A1 · Nov 19, 2015 · US
Proton exchange membrane fuel cell with stepped channel bipolar plate
US9786928B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9786928-B2 |
| Application number | US-201213593562-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 24, 2012 |
| Priority date | Aug 24, 2012 |
| Publication date | Oct 10, 2017 |
| Grant date | Oct 10, 2017 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A fuel cell stack includes a membrane electrode assembly and a bipolar plate. The bipolar plate has a corrugated portion defined by an adjacent pair of proximal and distal peak portions and a sidewall segment connecting the peak portions. The sidewall segment and membrane electrode assembly at least partially define a flow channel. The sidewall segment includes a shoulder portion defining a step spaced away from the peak portions.
First claim
Opening claim text (preview).
What is claimed is: 1. A vehicle comprising: a fuel cell stack to power the vehicle and including a membrane electrode assembly (MEA) and a bipolar plate having an adjacent pair of proximal and distal peak portions and a sidewall connecting the peak portions, partially defining a flow channel with the MEA, and including shoulder segments formed with a relative angle therebetween in a range of 40 to 140 degrees to define a step spaced away from the peak portions. 2. The vehicle of claim 1 wherein the flow channel has a width and a depth greater than the width. 3. The vehicle of claim 1 wherein the bipolar plate has a generally uniform thickness. 4. The vehicle of claim 1 wherein a thickness of the bipolar plate is approximately 100 microns. 5. The vehicle of claim 1 wherein the bipolar plate is formed from metal. 6. The vehicle of claim 1 wherein the bipolar plate is formed from stainless steel foil. 7. The vehicle of claim 1 wherein the shoulder segments are formed with a relative angle therebetween in a range of 80 to 100 degrees.
Assignees
Inventors
Classifications
Operations & Transport · mapped topic
Operations & Transport · mapped topic
- H01M8/0254Primary
corrugated or undulated · CPC title
characterised by grooves, e.g. their pitch or depth · CPC title
Cross-Sectional Technologies · mapped topic
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Frequently asked questions
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- What does patent US9786928B2 cover?
- A fuel cell stack includes a membrane electrode assembly and a bipolar plate. The bipolar plate has a corrugated portion defined by an adjacent pair of proximal and distal peak portions and a sidewall segment connecting the peak portions. The sidewall segment and membrane electrode assembly at least partially define a flow channel. The sidewall segment includes a shoulder portion defining a ste…
- Who is the assignee on this patent?
- Wilkosz Daniel E, Brost Ronald David, Wagner Thomas A, and 1 more
- 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 Oct 10 2017 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).