Patent US5212867A successfully refreshed from Google Patents.
US5212867A
Expired / Lapsed
US
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Method and unit for filling electrochemical cells
Assignee: Ultralife Batteries UK Ltd
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Filing: 1989-12-01
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Granted: 1993-05-25
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Expires: 2009-12-01
Abstract
Abstract A method and unit for filling electrochemical cells, especially lithium cells, with an electrolyte. The cells are first evacuated while simultaneously checking the same for short circuits. The further filling process is terminated for any cell determined to have a short circuit. After the final vacuum level has been achieved, the cells are subsequently filled with the electrolyte while simultaneously monitoring the electrical voltage at the cells. The filling process is terminated for any cell determined to have a deviation from a prescribed voltage.
Inventors
- 👤 Karl-Wilhelm Vogel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 11:53
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/60; H01M50/609; H01M50/618; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49108
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
86 words
A method of filling electrochemical cells, with an electrolyte, including the steps of: first evacuating said cells and simultaneously checking same for short circuits, whereby for any cell determined to have a short circuit, the further filling process is terminated; and after the final vacuum level has been achieved in said cells, subsequently filling same with said electrolyte while simultaneously monitoring the electrical voltage at said cells, whereby for any cell determined to have a deviation from a prescribed voltage range, the filling process is terminated.
Claim 2
Independent Claim
86 words
A method of filling electrochemical cells, with an electrolyte, including the steps of: first evacuating said cells and simultaneously checking same for short circuits, whereby for any cell determined to have a short circuit, the further filling process is terminated; and after the final vacuum level has been achieved in said cells, subsequently filling same with said electrolyte while simultaneously monitoring the electrical voltage at said cells, whereby for any cell determined to have a deviation from a prescribed voltage range, the filling process is terminated.
Claim 3
Dependent Claim
68 words
A method according to claim 1 for simultaneously filling several of said cells, including the steps of connecting each of said cells to a cell supply line which is provided with a cell valve and serves for said evacuation and said filling of said cells with said electrolyte, and closing the corresponding cell valve upon determination of a short circuit or voltage deviation in one of said cells.
Claim 4
Dependent Claim
31 words
A method according to claim 2 which includes the step, upon determination of a defect in one of said cells, of feeding said disruption to a visual and/or audible indicator means.
Claim 5
Dependent Claim
25 words
A method according to claim 2, which includes the step of prescribing a specific filling time for said filling of said cells with said electrolyte.
Claim 6
Dependent Claim
28 words
A method according to claim 2, which includes the step, upon determination of a defect in one of said cells, of subjecting this cell to a removal process.
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) | 1996-05-24 | 1996-11-23 | 1997-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-24 | 2000-11-23 | 2001-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-05-24 | 2004-11-23 | 2005-05-25 | $7700.00 | Window Closed / Lapsed |