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US4090122A
Expired / Lapsed
US
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Dual battery charger with logic means
Assignee: Power Systems Development Corp
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Filing: 1977-03-10
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Granted: 1978-05-16
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Expires: 1997-03-10
Abstract
Abstract A high capacity storage battery is mounted in a vehicle, and is selectively charged by the alternator thereof to afford a power source for remote utilization devices. Voltages of the standard automobile battery and the high capacity battery are monitored, and are charged by the alternator in accordance with a fixed priority. When the automobile battery is less than fully charged, it is charged by the alternator irrespective of the voltage at the high capacity battery. When the automobile battery is full, the high capacity storage battery is charged by the alternator until it is fully charged. Thereafter, the alternator is decoupled from both such batteries.
Inventors
- 👤 Walter W. Hoinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:40
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/14; H02J7/1423
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
168 words
An electric power system associated with a motor vehicle comprising: (a) an engine associated with the vehicle; (b) an alternator driven by said engine to generate electricity; (c) a first battery for operating components of said vehicle including said engine; Characterized by (d) a high capacity battery carried by said vehicle; (e) first means for evaluating the charge level of said first battery; (f) second means for evaluating the charge level of said high capacity battery; and (g) logic means for distributing the electricity generated by said alternator in accordance with the following priority: (i) said alternator being coupled to charge said first battery whenever said first battery is less than fully charged, irrespective of the charge level of said high capacity battery, (ii) said alternator being coupled to charge said high capacity battery whenever said high capacity battery is less than fully charged, if said first battery is fully charged, and (iii) said alternator being decoupled from both said batteries when both said batteries are fully charged.
Claim 2
Dependent Claim
168 words
An electric power system associated with a motor vehicle comprising: (a) an engine associated with the vehicle; (b) an alternator driven by said engine to generate electricity; (c) a first battery for operating components of said vehicle including said engine; Characterized by (d) a high capacity battery carried by said vehicle; (e) first means for evaluating the charge level of said first battery; (f) second means for evaluating the charge level of said high capacity battery; and (g) logic means for distributing the electricity generated by said alternator in accordance with the following priority: (i) said alternator being coupled to charge said first battery whenever said first battery is less than fully charged, irrespective of the charge level of said high capacity battery, (ii) said alternator being coupled to charge said high capacity battery whenever said high capacity battery is less than fully charged, if said first battery is fully charged, and (iii) said alternator being decoupled from both said batteries when both said batteries are fully charged.
Claim 3
Dependent Claim
22 words
A system as described in claim 1 and further including means for coupling said high capacity battery to drive a utilization device.
Claim 4
Dependent Claim
46 words
A system as described in claim 2 and further including means, responsive to said alternator, for developing first and second reference voltages for utilization by said first and second means, respectively, for comparison with the voltages of said first battery and said high capacity battery, respectively.
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) | 1981-05-15 | 1981-11-14 | 1982-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-15 | 1985-11-14 | 1986-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-15 | 1989-11-14 | 1990-05-16 | $7700.00 | Window Closed / Lapsed |