Patent US5238754A successfully refreshed from Google Patents.
US5238754A
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Solid oxide fuel cell system
Assignee: Eneos Celltech Co Ltd
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Filing: 1992-08-19
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Granted: 1993-08-24
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Expires: 2012-08-19
Abstract
Abstract The present invention provides a solid oxide fuel cell system comprising a stack including a layer of a number of cell units and separators alternated with each other, and characterized in that a set of cell units are placed on one surface between the separators, wherein each cell unit in the set is separately placed on the surface crossing at right angles to the layered direction, and wherein internal manifolds for fuel gas supply/exhaust and internal manifolds for oxidant gas supply/exhaust are formed around each cell unit, and all of them are formed through the separators.
Inventors
- 👤 Takashi Yasuo
- 👤 Yukinori Akiyama
- 👤 Noboru Ishida
- 👤 Shuzo Murakami
- 👤 Toshihiko Saitoh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:38
CPC Classifications
H; H01; H01M; H01M8/00; H01M8/02; H01M8/0202; H01M8/0247; H01M8/0267; H01M8/24; H01M8/241; H01M8/2425; H01M8/2428; H01M8/2432; H01M8/2465; H01M8/2483; H01M8/10; H01M8/12; H01M2008/1293; H01M2300/00; H01M2300/0017; H01M2300/0065; H01M2300/0068; H01M2300/0071; H01M2300/0074; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
64 words
A solid oxide fuel cell system comprising at least one stack including a layer of a number of cell units and separators alternated with each other, and characterized in that a set of cell units are placed on one surface between the separators, wherein each cell unit in the set is separately placed on the surface crossing at right angles to the layered direction.
Claim 2
Dependent Claim
64 words
A solid oxide fuel cell system comprising at least one stack including a layer of a number of cell units and separators alternated with each other, and characterized in that a set of cell units are placed on one surface between the separators, wherein each cell unit in the set is separately placed on the surface crossing at right angles to the layered direction.
Claim 3
Dependent Claim
29 words
A solid oxide fuel cell system of claim 1, wherein each cell unit is smaller than the separator and includes an anode, a cathode, and an electrolyte placed therebetween.
Claim 4
Dependent Claim
38 words
A solid oxide fuel cell system of claim 2, wherein internal manifolds for fuel gas supply/exhaust and internal manifolds for oxidant gas supply/exhaust are formed around each cell unit, and all of them are formed through the separators.
Claim 5
Dependent Claim
34 words
A solid oxide fuel cell system of claim 3, wherein the internal manifolds for each gas supply are formed closer to the center of the separator than the internal manifolds for each gas exhaust.
Claim 6
Dependent Claim
37 words
A solid oxide fuel cell system of claim 4, wherein the solid oxide fuel cell system includes construction by which the fuel gas and oxidant gas flow at right angles to each other in each cell unit.
Claim 7
Dependent Claim
35 words
A solid oxide fuel cell system of claim 5, wherein the solid fuel cell system has construction by which the fuel and the oxidant gas flow in the layered direction reversely in their internal manifolds.
Claim 8
Dependent Claim
93 words
A solid oxide fuel cell system of claim 5, wherein a first gas supply/exhaust plate having a gas supply and a gas exhaust communicating with internal manifolds is placed at one of the bottom and top of the stack, and a second supply/exhaust plate having a gas supply and a gas exhaust communicating with the internal manifolds is placed at the other side of the stack, and wherein the fuel gas is supplied through one of the first and second gas supply/exhaust plates and the oxidant gas is supplied through the other plate.
Claim 9
Dependent Claim
26 words
A solid oxide fuel cell system of claim 4, wherein at least one coolant flow path formed through the separators is formed around each cell unit.
Claim 10
Dependent Claim
50 words
A solid oxide fuel cell system of claim 8, wherein a number of coolant holes are formed around each cell unit which constitute the coolant flow path in the layered direction, and the coolant holes become larger in diameter in proportion to the distance from the center of the separators.
Claim 11
Dependent Claim
25 words
A solid oxide fuel cell system of claim 8, wherein all the coolant holes are placed farther from the cell units than the internal manifolds.
Claim 12
Dependent Claim
62 words
A solid oxide fuel cell system comprising at least one stack including a layer of a number of cell units and separators alternated with each other, and characterized in that four cell units are placed on one surface between the separators, wherein each of four cell units is placed in matrix on the surface crossing at right angles to the layered direction.
Claim 13
Dependent Claim
62 words
A solid oxide fuel cell system comprising at least one stack including a layer of a number of cell units and separators alternated with each other, and characterized in that four cell units are placed on one surface between the separators, wherein each of four cell units is placed in matrix on the surface crossing at right angles to the layered direction.
Claim 14
Dependent Claim
38 words
A solid oxide fuel cell system of claim 11, wherein internal manifolds for fuel gas supply/exhaust and internal manifolds for oxidant gas supply/exhaust are formed around each cell unit, and all of them are formed through the separators.
Claim 15
Dependent Claim
34 words
A solid oxide fuel cell system of claim 12, wherein the internal manifolds for each gas supply are formed closer to the center of the separator than the internal manifolds for each gas exhaust.
Claim 16
Dependent Claim
37 words
A solid oxide fuel cell system of claim 13, wherein the solid oxide fuel cell system includes construction by which the fuel gas and oxidant gas flow at right angles to each other in each cell unit.
Claim 17
Dependent Claim
35 words
A solid oxide fuel cell system of claim 14, wherein the solid fuel cell system has construction by which the fuel and the oxidant gas flow in the layered direction reversely in their internal manifolds.
Claim 18
Dependent Claim
93 words
A solid oxide fuel cell system of claim 14, wherein a first gas supply/exhaust plate having a gas supply and a gas exhaust communicating with internal manifolds is placed at one of the bottom and top of the stack, and a second supply/exhaust plate having a gas supply and a gas exhaust communicating with the internal manifolds is placed at the other side of the stack, and wherein the fuel gas is supplied through one of the first and second gas supply/exhaust plates and the oxidant gas is supplied through the other plate.
Claim 19
Dependent Claim
26 words
A solid oxide fuel cell system of claim 13, wherein at least one coolant flow path formed through the separators is formed around each cell unit.
Claim 20
Dependent Claim
46 words
A solid oxide fuel cell system of claim 17, wherein a number of coolant holes are formed around each cell unit which constitute the coolant flow path, and the coolant holes become larger in diameter in proportion to the distance from the center of the separators.
Claim 21
Dependent Claim
25 words
A solid oxide fuel cell system of claim 17, wherein all the coolant holes are placed farther from the cell units than the internal manifolds.
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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) | 1996-08-23 | 1997-02-22 | 1997-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-08-23 | 2001-02-22 | 2001-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-08-23 | 2005-02-22 | 2005-08-24 | $7700.00 | Window Closed / Lapsed |