Patent US4719157A successfully refreshed from Google Patents.
US4719157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel cell stack assembly
Assignee: Tokyo Electric Power Co Holdings Inc
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Filing: 1986-06-06
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Granted: 1988-01-12
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Expires: 2006-06-06
Abstract
Abstract A current collecting equipment for a fuel cell assembly of the kind wherein a current collector, a heat resisting insulator and an end plate are in turn being mounted on each end of a fuel cell stack is characterized in that the current collector comprises a plurality of current collecting sections arranged with spaces between sides of the adjacent sections, and that terminals are respectively connected to the current collecting sections and brought out through the end plate. The current collecting equipment may comprises four current collecting sections, a conductor frame provided with four through holes at its corners and four inner terminals being connected to each section and connected to the conductor frame, and an output terminal mounted on the frame and brought out through the end plate.
Inventors
- 👤 Masaru Tsutsumi
- 👤 Hideo Hagino
- 👤 Osamu Fujiwara
- 👤 Hitoshi Goto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:53
CPC Classifications
H; H01; H01M; H01M8/00; H01M8/02; H01M8/0202; H01M8/0247; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
91 words
A fuel cell stack assembly comprising a fuel cell stack, thin current collectors arranged on opposite ends of the fuel cell stack, and end plates arranged on the current collectors, said end plates being insulated from the current collector by a heat resisting insulator arranged therebetween, each of said current collectors comprising a plurality of independent current collecting sections, said current collecting sections on each end of the fuel cell stack being spaced from each other and each provided with a single terminal extending therefrom through said insulator and end plate.
Claim 2
Dependent Claim
91 words
A fuel cell stack assembly comprising a fuel cell stack, thin current collectors arranged on opposite ends of the fuel cell stack, and end plates arranged on the current collectors, said end plates being insulated from the current collector by a heat resisting insulator arranged therebetween, each of said current collectors comprising a plurality of independent current collecting sections, said current collecting sections on each end of the fuel cell stack being spaced from each other and each provided with a single terminal extending therefrom through said insulator and end plate.
Claim 3
Dependent Claim
47 words
The fuel cell stack assembly according to claim 1 wherein the current collector comprises four triangular sections being so arranged that the spaces formed between sides of the adjacent two sections extend radially from the center of the collector along the diagonal lines of the current collector.
Claim 4
Dependent Claim
46 words
The fuel stack assembly according to claim 1 wherein the current collector comprises four rectangular sections being so arranged that the spaces between adjacent sides of two sections extend radially from the center of the collector along the lines perpendicular to the sides of the collector.
Claim 5
Dependent Claim
31 words
The fuel cell stack assembly according to claim 2 or claim 3 wherein a common terminal is arranged on the center of the collector and brought out through the end plate.
Claim 6
Dependent Claim
130 words
A fuel cell stack assembly comprising a fuel cell stack, a pair of thin current collectors arranged on opposite ends of the fuel cell stack, and end plates arranged on the current collectors, each of said end plates being insulated from the current collector by a heat resisting insulator arranged therebetween, each of said current collectors comprising a plurality of independent current collecting sections, said current collecting sections for each current collector being spaced from each other and each provided with a single inner terminal extending therefrom through said insulator, said inner terminals being connected one another by a conducting frame arranged between said insulator and end plate, said conducting frame being insulated from said end plate and provided with at least one output terminal extending through the end plate.
Claim 7
Dependent Claim
130 words
A fuel cell stack assembly comprising a fuel cell stack, a pair of thin current collectors arranged on opposite ends of the fuel cell stack, and end plates arranged on the current collectors, each of said end plates being insulated from the current collector by a heat resisting insulator arranged therebetween, each of said current collectors comprising a plurality of independent current collecting sections, said current collecting sections for each current collector being spaced from each other and each provided with a single inner terminal extending therefrom through said insulator, said inner terminals being connected one another by a conducting frame arranged between said insulator and end plate, said conducting frame being insulated from said end plate and provided with at least one output terminal extending through the end plate.
Claim 8
Dependent Claim
40 words
The fuel cell stack assembly according to claim 5, wherein said conducting frame is insulated from the end plate by an insulating frame and insulating strips, said inner terminals being projected in recesses of the end plate and insulated therefrom.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-01-11 | 1991-07-13 | 1992-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-11 | 1995-07-13 | 1996-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-11 | 1999-07-13 | 2000-01-12 | $7700.00 | Window Closed / Lapsed |