Apparatus for sensing voltage information of fuel cell
US-11870112-B2 · Jan 9, 2024 · US
Controlling PEM fuel cell voltage during power transitions and idling
US9130205B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9130205-B2 |
| Application number | US-201113261721-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 25, 2011 |
| Priority date | Feb 25, 2011 |
| Publication date | Sep 8, 2015 |
| Grant date | Sep 8, 2015 |
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Abstract
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The controller (185) of a fuel cell stack (151) in a vehicle (150) responds to lower demand to cause a diverter (172) to direct all air from the cathodes (19) except as required to generate sufficient power to limit cell voltage to a safe idle voltage threshold, cause storage in an energy storage system (201) sufficient to limit cell voltage to the idle voltage threshold unless SOC is too high, connects a voltage limiting load (220) to the stack sized to consume all power not consumed by auxiliary BOP, or, for longer idles, air-starves the stack and powers BOP from storage. In response to increase in a demand signal, the controller causes flow of all air to the cathodes. In response to an off signal (223) or a start signal (193) the controller causes a shutdown routine or a startup routine in each of which all generated power is stored to maintain fuel cell voltage below a threshold, or is consumed in the voltage limiting load.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method comprising: a) operating a fuel cell power plant to provide electric power to a vehicle propulsion system ( 159 ); b) monitoring fuel cell voltage during normal operation of the vehicle propulsion system; characterized by: c) in response to fuel cell voltage reaching a predetermined cell voltage threshold, diverting all reactant air except an amount required to generate enough power to cause the fuel cell voltage to not exceed the prede…
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Classifications
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
- H01M8/04873Primary
Electricity · mapped topic
- B60L58/40Primary
Operations & Transport · mapped topic
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Frequently asked questions
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- What does patent US9130205B2 cover?
- The controller (185) of a fuel cell stack (151) in a vehicle (150) responds to lower demand to cause a diverter (172) to direct all air from the cathodes (19) except as required to generate sufficient power to limit cell voltage to a safe idle voltage threshold, cause storage in an energy storage system (201) sufficient to limit cell voltage to the idle voltage threshold unless SOC is too high,…
- Who is the assignee on this patent?
- Reiser Carl A, Audi Ag
- What technology area does this patent fall under?
- Primary CPC classification H01M8/04873. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Sep 08 2015 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).