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US5148096A
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Charging method for batteries
Assignee: Dornier GmbH
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Filing: 1991-06-06
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Granted: 1992-09-15
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Expires: 2011-06-06
Abstract
Abstract A charging method for accumulators in two phases, the first phase being a constant current charging up to a given value of the battery voltage and, in the second phase, the battery voltage being limited as a function of the charging current.
Inventors
- 👤 Wolfgang Denzinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:56
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/42; H01M10/44; H02; H02J; H02J7/00; H02J7/90; H02J7/94; H02J7/96; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
99 words
A charging method for batteries comprising: a first phase being a constant current charging up to a given value of a battery voltage U; and a second phase in which the battery voltage U is limited as a function of a charging current i L , the following relationship existing between the battery voltage U and the charging current i L : U=U.sub.o +ΔU wherein U o =current-independent part of the battery voltage U, ΔU=current-dependent part of the battery voltage U ΔU=f·i.sub.L ·R.sub.i with f=factor smaller than 1 i L =charging current R i =internal resistance of the battery.
Claim 2
Dependent Claim
99 words
A charging method for batteries comprising: a first phase being a constant current charging up to a given value of a battery voltage U; and a second phase in which the battery voltage U is limited as a function of a charging current i L , the following relationship existing between the battery voltage U and the charging current i L : U=U.sub.o +ΔU wherein U o =current-independent part of the battery voltage U, ΔU=current-dependent part of the battery voltage U ΔU=f·i.sub.L ·R.sub.i with f=factor smaller than 1 i L =charging current R i =internal resistance of the battery.
Claim 3
Dependent Claim
12 words
The method of claim 1, wherein f is between 0.5 and 1.
Claim 4
Dependent Claim
9 words
The method of claim 2, wherein f is 0.8.
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) | 1995-09-15 | 1996-03-16 | 1996-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-15 | 2000-03-16 | 2000-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-15 | 2004-03-16 | 2004-09-15 | $7700.00 | Window Closed / Lapsed |