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US4686159A
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Laminated layer type fuel cell
Assignee: New Energy and Industrial Technology Development Organization
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Filing: 1986-08-12
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Granted: 1987-08-11
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Expires: 2006-08-12
Abstract
Abstract A laminated layer type fuel cell is formed of rectilinear and zigzag portions of channels formed in at least one selected from a group consisting of the gas separation plates, fuel electrode and oxidizer electrodes, thereby equalizing the electrochemical reaction, improving the cell characteristics, and the uniformity of the temperature distribution of the laminate layer type fuel cell.
Inventors
- 👤 Hideaki Miyoshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:19
CPC Classifications
H; H01; H01M; H01M8/00; H01M8/02; H01M8/0202; H01M8/0258; H01M8/0263; H01M8/026; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
92 words
A laminated layer type fuel cell for converting electrochemical reaction of fuel and oxidizer into electric power, said fuel cell comprising a plurality of gas separation plates, each having rectilinear and zigzag portions of fuel and oxidizer channels and a plurality of electrode cells sandwiched between said gas separation plates and sequentially laminated, each formed of a fuel electrode, an electrolyte matrix, and an oxidizer electrode whereby partial pressures of reaction gases produced by the electrochemical reaction are equalized throughout the cell to equalize cell reactions and temperature distribution in the cell.
Claim 2
Dependent Claim
92 words
A laminated layer type fuel cell for converting electrochemical reaction of fuel and oxidizer into electric power, said fuel cell comprising a plurality of gas separation plates, each having rectilinear and zigzag portions of fuel and oxidizer channels and a plurality of electrode cells sandwiched between said gas separation plates and sequentially laminated, each formed of a fuel electrode, an electrolyte matrix, and an oxidizer electrode whereby partial pressures of reaction gases produced by the electrochemical reaction are equalized throughout the cell to equalize cell reactions and temperature distribution in the cell.
Claim 3
Dependent Claim
44 words
A laminated layer type fuel cell as claimed in claim 1 wherein the rectilinear and zigzag portions of fuel and oxidizer channels have a length ratio of 1:1 and the zigzag portions are alternately disposed at upstream and downstream sides of the reaction gases.
Claim 4
Dependent Claim
42 words
A laminated layer type fuel cell as claimed in claim 1 wherein the rectilinear and zigzag portions of fuel and oxidizer channels have a length ratio of 2:1 to 4:1 and the zigzag portions are sequentially displaced with respect to each channel.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-08-10 | 1991-02-09 | 1991-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-10 | 1995-02-09 | 1995-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-10 | 1999-02-09 | 1999-08-11 | $7700.00 | Window Closed / Lapsed |