US4405696A
Expired / Lapsed
US
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Electrochemical storage cell
Assignee: BBC Brown Boveri AG Germany
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Filing: 1982-04-22
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Granted: 1983-09-20
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Expires: 2002-04-22
Abstract
Abstract Electrochemical storage cell based on alkali metal and chalcogen comprising at least one anode space for the alkali metal anolyte and a cathode space for the chalcogen catholyte, with the anode space and the cathode space separated from each other by an alkali ion-conducting solid electrolyte wall and a metallic housing bounding the cell. The solid electrolyte wall has a plurality of spaced, outwardly extending hollow recesses, and at least one current collector disposed between each pair of adjacent recesses.
Inventors
- 👤 Wilfried Fischer
- 👤 Dieter Hasenauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:21
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/36; H01M10/39; H01M10/3909; H01M10/3918; H01M10/3936; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
79 words
Electrochemical storage cell based on alkali metal and chalcogen comprising at least one anode space for the alkali metal anolyte and a cathode space for the chalcogen catholyte, with the anode, space and the cathode space separated from each other by an alkali ion-conducting solid electrolyte wall, a metallic housing bounding the cell, said solid electrolyte wall having a plurality of spaced, outwardly extending hollow recesses, and at least one current collector disposed between each pair of adjacent recesses.
Claim 2
Dependent Claim
79 words
Electrochemical storage cell based on alkali metal and chalcogen comprising at least one anode space for the alkali metal anolyte and a cathode space for the chalcogen catholyte, with the anode, space and the cathode space separated from each other by an alkali ion-conducting solid electrolyte wall, a metallic housing bounding the cell, said solid electrolyte wall having a plurality of spaced, outwardly extending hollow recesses, and at least one current collector disposed between each pair of adjacent recesses.
Claim 3
Dependent Claim
24 words
Storage cell according to claim 1, wherein the current collectors between the recesses are connected to the metallic housing in an electrically conducting manner.
Claim 4
Dependent Claim
13 words
Storage cell according to claim 1, wherein the solid electrolyte is substantially cup-shaped.
Claim 5
Dependent Claim
19 words
Storage cell according to claim 3, wherein a safety insert is inserted into the interior of the solid electrolyte.
Claim 6
Dependent Claim
28 words
Storage cell according to claim 4, wherein the interior of of the safety insert is in communication via at least one opening with the interiors of the recesses.
Claim 7
Dependent Claim
21 words
Storage cell according to claim 4, wherein the safety insert is formed by at least three cups stacked inside each other.
Claim 8
Dependent Claim
23 words
Storage cell according to claim 6, wherein the outside surface of the inner cup rests against the interior surface of the middle cup.
Claim 9
Dependent Claim
25 words
Storage cell according to claim 6 or 7, wherein the outer surfaces of the middle cup rest against the inside surfaces of the outer cup.
Claim 10
Dependent Claim
18 words
Storage cell according to claim 6, wherein the inner cup of the safety insert is made of aluminum.
Claim 11
Dependent Claim
20 words
Storage cell according to claim 6 or 9, wherein the middle cup of the safety insert is made of graphite.
Claim 12
Dependent Claim
20 words
Storage cell according to claim 6 or 9, wherein the outer cup of the safety insert is made of steel.
Claim 13
Dependent Claim
23 words
Storage cell according to claim 1, wherein the interior of the solid electrolyte is in open communication with the interiors of the recesses.
Claim 14
Dependent Claim
29 words
Storage cell according to claim 12, wherein each recess is arranged from the open end of the solid electrolyte along its entire outside surface, back to the solid electrolyte.
Claim 15
Dependent Claim
12 words
Storage cell according to claim 1, wherein the recesses are hollow ribs.
Claim 16
Dependent Claim
20 words
Storage cell according to claim 1, wherein the recesses become wider toward the outside and have a trapezoidal cross section.
Claim 17
Dependent Claim
12 words
Storage cell according to claim 1, wherein the recesses point radially outward.
Claim 18
Dependent Claim
12 words
Storage cell according to claim 1, wherein the metallic housing is cup-shaped.
Claim 19
Dependent Claim
19 words
Storage cell according to claim 17, wherein the metallic housing is formed by two cups placed inside each other.
Claim 20
Dependent Claim
23 words
Storage cell according to claim 18, wherein the outer surfaces of the inner cup rest against the inner surfaces of the outer cup.
Claim 21
Dependent Claim
18 words
Storage cell according to claim 19, wherein the inner cup of the metal housing is made of aluminum.
Claim 22
Dependent Claim
18 words
Storage cell according to claim 20, wherein the outer cup of the metallic housing is made of steel.
Claim 23
Dependent Claim
21 words
Storage cell according to claim 20 or 21, wherein the inner cup of the housing has an electrically conducting protective layer.
Claim 24
Dependent Claim
18 words
Storage cell according to claim 4, wherein the safety insert has at least one opening in the bottom.
Claim 25
Dependent Claim
24 words
Storage cell according to claim 23, wherein the opening in the bottom of the safety insert has a valve adapted to close the opening.
Claim 26
Dependent Claim
25 words
Storage cell according to claim 18, wherein the inner cup of the metallic housing is connected to radially arranged sheet-aluminum parts serving as current collectors.
Claim 27
Dependent Claim
18 words
Storage cell according to claim 25, wherein the current collectors are provided with an electrically conducting protective layer.
Claim 28
Dependent Claim
34 words
Storage cell according to claim 1, wherein the anode space and the cathode space is closed off by a common disc of α-aluminum oxide, which is connected to the solid electrolyte and the housing.
Claim 29
Dependent Claim
16 words
Storage cell according to claim 27, wherein a sodium supply container is disposed above the disc.
Claim 30
Dependent Claim
29 words
Storage cell according to claim 28, wherein the supply container is a tube which is closed off on one side and is set with its opening against the disc.
Claim 31
Dependent Claim
16 words
Storage cell according to claim 29, wherein the tube has the same diameter as the housing.
Claim 32
Dependent Claim
26 words
Storage cell according to claim 29, wherein the anode space is connected to the supply container via at least one opening in the α-aluminum oxide disc.
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) | 1986-09-19 | 1987-03-21 | 1987-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-19 | 1991-03-21 | 1991-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-19 | 1995-03-21 | 1995-09-20 | $7700.00 | Window Closed / Lapsed |