Fuel cell system and method for its operation
US-2017047600-A1 · Feb 16, 2017 · US
Method of controlling hydrogen partial pressure for fuel cell system
US2019207235A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2019207235-A1 |
| Application number | US-201816055477-A |
| Country | US |
| Kind code | A1 |
| Filing date | Aug 6, 2018 |
| Priority date | Dec 29, 2017 |
| Publication date | Jul 4, 2019 |
| Grant date | — |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A method of controlling a hydrogen partial pressure can be carried out in a fuel cell system including a stack having a hydrogen electrode and an air electrode. The method includes: determining a point of time to purge the hydrogen electrode using a hydrogen concentration at an outlet of the hydrogen electrode or an accumulated amount of charge generated in the stack; and setting a target supply pressure of hydrogen supplied to the stack, in which the target hydrogen supply pressure is set in consideration of a hydrogen pressure and a partial pressure of nitrogen resulting from crossover in the stack.
First claim
Opening claim text (preview).
What is claimed is: 1 . A method of controlling a stack in a fuel cell system, the stack including a hydrogen electrode and an air electrode, the method comprising: supplying hydrogen to the stack at a target hydrogen supply pressure; computing a hydrogen concentration at an outlet of the hydrogen electrode or an accumulated amount of electric charge generated in the stack; and updating the target hydrogen supply pressure of the hydrogen supplied to the stack, wherein the updated target hydrogen supply pressure is set in consideration of the target hydrogen supply pressure and a partial pressure of nitrogen resulting from crossover in the stack. 2 . The method according to claim 1 , wherein the target hydrogen supply pressure is set by adding the partial pressure of the nitrogen to a hydrogen pressure in the stack. 3 . The method according to claim 2 , wherein the target hydrogen supply pressure is variably set over time in consideration of a rate of increase in the partial pressure of the nitrogen. 4 . The method according to claim 1 , further comprising: determining to carry out a purge of the hydrogen electrode when the hydrogen concentration at an outlet of the hydrogen electrode exceeds a predetermined hydrogen concentration or the accumulated amount of electric charge generated in the stack exceeds a predetermined target amount of electric charge. 5 . The method according to claim 1 , wherein the target hydrogen supply pressure is set in consideration of the partial pressure of the nitrogen and at least one of temperature of the stack, condition of current required in the fuel cell system, and the hydrogen concentration in the hydrogen electrode. 6 . The method according to claim 5 , wherein the hydrogen concentration is directly measured by a concentration sensor in the stack or determined by using a value estimated via a concentration estimator.
Assignees
Inventors
Classifications
- H01M8/04753Primary
of fuel cell reactants · CPC title
of fuel cell stacks · CPC title
of other components of a fuel cell or fuel cell stacks · CPC title
of anode reactants at the inlet or inside the fuel cell · CPC title
Preventing means for fuel crossover · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US2019207235A1 cover?
- A method of controlling a hydrogen partial pressure can be carried out in a fuel cell system including a stack having a hydrogen electrode and an air electrode. The method includes: determining a point of time to purge the hydrogen electrode using a hydrogen concentration at an outlet of the hydrogen electrode or an accumulated amount of charge generated in the stack; and setting a target suppl…
- Who is the assignee on this patent?
- Hyundai Motor Co Ltd, Kia Motors Corp
- What technology area does this patent fall under?
- Primary CPC classification H01M8/04753. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Jul 04 2019 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).