Methods for determining anode integrity during fuel cell vehicle operation
US-2016172696-A1 · Jun 16, 2016 · US
Fuel cell system
US2016380284A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016380284-A1 |
| Application number | US-201615181724-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jun 14, 2016 |
| Priority date | Jun 25, 2015 |
| Publication date | Dec 29, 2016 |
| Grant date | — |
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Abstract
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An object is to reduce the noise and the vibration caused in operation of an injector in a non-power generation state of a fuel cell. There is provided a fuel cell system comprising fuel cells configured such that each fuel cell includes an anode, an electrolyte membrane and a cathode; an injector that is configured to supply hydrogen to the anode; and a controller that is configured to control operation of an injector to make pressure of the anode reach a target pressure. In a non-power generation state that is after a start of the fuel cell system but is before power generation of the fuel cells, the controller sets a second target pressure that is higher than a first target pressure to the target pressure and controls operation of the injector to make the pressure of the anode equal to the second target pressure. After the pressure of the anode is increased to be higher than the first target pressure, the controller sets the first target pressure to the target pressure and controls operation of the injector to make the pressure of the anode equal to the first target pressure. The first target pressure is a pressure required to supply hydrogen over the entire anodes in the fuel cell stack.
First claim
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1 . A fuel cell system, comprising: a fuel cell stack that has a plurality of fuel cells, wherein each fuel cell includes an electrolyte membrane, an anode formed on one surface of the electrolyte membrane and a cathode formed on the other surface of the electrolyte membrane; an injector that is configured to supply hydrogen to the anode; and a controller that is configured to control operation of the injection to make a pressure of the anode reach a target pressure, wherein in a non-power generation state that is after a start of the fuel cell system but is before power generation of the fuel cells, the controller sets a second target pressure that is higher than a first target pressure to the target pressure and controls operation of the injector to make the pressure of the anode equal to the second target pressure, and after the pressure of the anode is increased to be higher than the first target pressure, the controller sets the first target pressure to the target pressure and controls operation of the injector to make the pressure of the anode equal to the first target pressure, wherein the first target pressure is a pressure required to supply hydrogen over the entire anodes in the fuel cell stack. 2 . The fuel cell system according to claim 1 , further comprising a circulation passage that is arranged to return an off gas discharged from the anode, to the anode; and a pump that is provided on the circulation passage, wherein the controller operates the pump to return the off gas discharged from the anode, to the anode in the non-power generation state. 3 . The fuel cell system according to claim 1 , wherein in the non-power generation state, after making the pressure of the anode equal to the second target pressure, the controller measures the pressure of the anode to perform a hydrogen leakage test.
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Classifications
with solid or matrix-supported electrolytes · CPC title
Fuel cells in motive systems, e.g. vehicle, ship, plane · CPC title
of gaseous reactants · CPC title
- H01M8/04225Primary
during start-up · CPC title
Heat exchange using liquids · CPC title
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Frequently asked questions
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- What does patent US2016380284A1 cover?
- An object is to reduce the noise and the vibration caused in operation of an injector in a non-power generation state of a fuel cell. There is provided a fuel cell system comprising fuel cells configured such that each fuel cell includes an anode, an electrolyte membrane and a cathode; an injector that is configured to supply hydrogen to the anode; and a controller that is configured to control…
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M8/04225. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Dec 29 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). 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).