Patent FR681827A successfully refreshed from Google Patents.
US6181111B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Permanent magnet alternator system for battery charging
Assignee: Individual
•
Filing: 1999-07-21
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Granted: 2001-01-30
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Expires: 2019-07-21
Abstract
Abstract A battery charging system may include a permanent magnet alternator. The system uses controlled rectifiers to supply charging output from an alternator to the battery, to control the charging current and to provide a taper charge. The system may also use a voltage regulator coupled with the controlled rectifiers. The voltage regulator progressively deactivates the controlled rectifiers, in response to the state of charge of the battery, to provide a taper charge. The alternator may be used in vehicles, including automobiles, and for other electrical generating purposes.
Inventors
- 👤 Lowell T. Hoffman
- 👤 John Paul Hoffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:44
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/14; H02J7/1469; H02J7/1492; H02H; H02H7/00; H02H7/06; H02H7/067; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/70; Y02T10/80; Y02T10/92
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
151 words
A battery charging system comprising: a battery; an alternator charging said battery; and a means for controlling charging input to said battery, wherein said controlling means includes a means for rectifying said charging input to said battery; and a means for limiting said charging input to said battery in response to a state of charge of said battery, and said limiting means includes a means for at least partially deactivating said rectifying means and reducing said charging input to said battery supplied by said rectifying means, said battery charging system includes a means for self-charging under low battery charge conditions, and includes a means for supplying current from the alternator through said controlling means to said limiting means to close a charging path to said battery, wherein said controlling means includes a means for shunting said current away from said limiting means as the state of charge of said battery increases.
Claim 2
Dependent Claim
151 words
A battery charging system comprising: a battery; an alternator charging said battery; and a means for controlling charging input to said battery, wherein said controlling means includes a means for rectifying said charging input to said battery; and a means for limiting said charging input to said battery in response to a state of charge of said battery, and said limiting means includes a means for at least partially deactivating said rectifying means and reducing said charging input to said battery supplied by said rectifying means, said battery charging system includes a means for self-charging under low battery charge conditions, and includes a means for supplying current from the alternator through said controlling means to said limiting means to close a charging path to said battery, wherein said controlling means includes a means for shunting said current away from said limiting means as the state of charge of said battery increases.
Claim 3
Dependent Claim
18 words
The system of claim 1 , wherein said system includes a means for progressively deactivating said rectifying means.
Claim 4
Dependent Claim
36 words
The system of claim 2 , wherein said system includes a means for sensing said state of charge of said battery and said partially deactivating means is responsive to said state of charge of said battery.
Claim 5
Dependent Claim
14 words
The system of claim 1 , wherein said alternator is a permanent magnet alternator.
Claim 6
Dependent Claim
20 words
The system of claim 4 , wherein said system includes means for sensing said state of charge of said battery.
Claim 7
Dependent Claim
18 words
The system of claim 4 , wherein said system includes a means for progressively deactivating said rectifying means.
Claim 8
Dependent Claim
21 words
The system of claim 6 , wherein the progressively deactivating means is responsive to said state of charge of said battery.
Claim 9
Dependent Claim
21 words
The system of claim 7 , wherein the system includes a means for sensing the state of charge of said battery.
Claim 10
Dependent Claim
16 words
The system of claim 1 , wherein said rectifying means includes a plurality of rectifying elements.
Claim 11
Dependent Claim
21 words
The system of claim 9 , wherein said system includes a means for sensing said state of charge of said battery.
Claim 12
Dependent Claim
18 words
The system of claim 9 , wherein said system includes a means for progressively deactivating said rectifying means.
Claim 13
Dependent Claim
21 words
The system of claim 11 , wherein said partially deactivating means is responsive to said state of charge of said battery.
Claim 14
Dependent Claim
40 words
The system of claim 12 , wherein the system includes a means for sensing said state of charge of said battery and selectively and progressively deactivating said individual rectifying elements in response to said state of charge of said battery.
Claim 15
Dependent Claim
13 words
The system of claim 13 , wherein said system is a vehicle system.
Claim 16
Dependent Claim
153 words
A battery charging system comprising: a battery; and an alternator charging said battery, wherein said system includes a controller to control charging input current to said battery, said controller includes a rectifier to rectify said charging input to said battery and an input limiter to limit said charging current input to said battery, said input limiter being responsive to a state of charge of said battery and further includes a deactivator that partially deactivates said rectifier in response to the state of charge of said battery and reduces said charging current input to said battery; said system further includes a charging path to supply current from said alternator through said controller to said battery under low battery conditions whereby said system is self-charging Linder low battery conditions, wherein said controller includes a shunt to shunt said charging current input away from said input limiter as the state of charge of said battery increases.
Claim 17
Dependent Claim
153 words
A battery charging system comprising: a battery; and an alternator charging said battery, wherein said system includes a controller to control charging input current to said battery, said controller includes a rectifier to rectify said charging input to said battery and an input limiter to limit said charging current input to said battery, said input limiter being responsive to a state of charge of said battery and further includes a deactivator that partially deactivates said rectifier in response to the state of charge of said battery and reduces said charging current input to said battery; said system further includes a charging path to supply current from said alternator through said controller to said battery under low battery conditions whereby said system is self-charging Linder low battery conditions, wherein said controller includes a shunt to shunt said charging current input away from said input limiter as the state of charge of said battery increases.
Claim 18
Dependent Claim
243 words
A battery charging system for a power supply comprising: a battery; and a permanent magnet alternator, wherein said alternator is supplying charging input current to said battery, said system includes a controller to control the charging input current to said battery; said controller includes a rectifier having a plurality of rectifying elements to rectify said charging input current to said battery and an input limiter to limit said charging current input to said battery, said input limiter includes a sensor to sense a state of charge of said battery and being responsive to said state of charge of said battery; said input limiter further includes a deactivator to at least partially deactivate said rectifier in response to said state of charge of said battery, said deactivator progressively deactivating said rectifier elements in response to said state of charge of said battery and reducing said charging current input to said battery; said controller further includes a shunt to shunt the charging current input away from said input limiter as the state of charge of said battery increases; said system further includes a charging path to supply current from said alternator through said controller to said battery under low battery conditions, wherein said system is self-charging under low battery conditions and said deactivator selectively and progressively deactivates individual rectifying elements in response to said state of charge of said battery and wherein said system includes a means for protecting said system under adverse load conditions.
Claim 19
Dependent Claim
243 words
A battery charging system for a power supply comprising: a battery; and a permanent magnet alternator, wherein said alternator is supplying charging input current to said battery, said system includes a controller to control the charging input current to said battery; said controller includes a rectifier having a plurality of rectifying elements to rectify said charging input current to said battery and an input limiter to limit said charging current input to said battery, said input limiter includes a sensor to sense a state of charge of said battery and being responsive to said state of charge of said battery; said input limiter further includes a deactivator to at least partially deactivate said rectifier in response to said state of charge of said battery, said deactivator progressively deactivating said rectifier elements in response to said state of charge of said battery and reducing said charging current input to said battery; said controller further includes a shunt to shunt the charging current input away from said input limiter as the state of charge of said battery increases; said system further includes a charging path to supply current from said alternator through said controller to said battery under low battery conditions, wherein said system is self-charging under low battery conditions and said deactivator selectively and progressively deactivates individual rectifying elements in response to said state of charge of said battery and wherein said system includes a means for protecting said system under adverse load conditions.
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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) | 2004-01-30 | 2004-07-31 | 2005-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-01-30 | 2008-07-31 | 2009-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-01-30 | 2012-07-31 | 2013-01-30 | $7700.00 | Window Closed / Lapsed |