US5644208A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Battery comprising a plurality of cells, in particular lithium-ion cells, connected in series
Assignee: ALE International SAS
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Filing: 1996-08-09
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Granted: 1997-07-01
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Expires: 2016-08-09
Abstract
Abstract A battery comprises a plurality of cells, in particular lithium-ion cells, connected in series and having two external connection contacts constituting charging/discharging contacts. A switch between the cells, in the electrical circuit connecting them, is open when the battery is being charged and closed when the battery is being discharged. On either side of each switch is an external charging contact for connection to a separate charging circuit for each cell. Each charging/discharging contact also constitutes a charging contact for the cell that is directly connected to it.
Inventors
- 👤 Benoit Abiven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:15
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/50; H02J7/575; Y; Y02; Y02P; Y02P70/00; Y02P70/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
Battery comprising a plurality of cells, in particular lithium-ion cells, connected in series and having two external connection contacts constituting charging/discharging contacts and, between said cells, in the electrical circuit connecting them, a switch adapted to be open when the battery is being charged and closed when the battery is being discharged, and, on either side of each of said switches, an external charging contact for connection to a separate charging circuit for each of said cells, each of said charging/discharging contacts also constituting a charging contact for the cell that is directly connected to it.
Claim 2
Dependent Claim
96 words
Battery comprising a plurality of cells, in particular lithium-ion cells, connected in series and having two external connection contacts constituting charging/discharging contacts and, between said cells, in the electrical circuit connecting them, a switch adapted to be open when the battery is being charged and closed when the battery is being discharged, and, on either side of each of said switches, an external charging contact for connection to a separate charging circuit for each of said cells, each of said charging/discharging contacts also constituting a charging contact for the cell that is directly connected to it.
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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) | 2000-06-30 | 2000-12-30 | 2001-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-06-30 | 2004-12-30 | 2005-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-06-30 | 2008-12-30 | 2009-07-01 | $7700.00 | Window Closed / Lapsed |