Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1992-03-23
1994-11-08
Peckman, Kristine L.
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
320 35, 320 43, H02J 704
Patent
active
053630319
ABSTRACT:
In an exemplary fast charging system, a hand-held computerized terminal with rechargeable batteries therein may be bodily inserted into a charger receptacle. The terminal may have volatile memory and other components requiring load current during charging., The system may automatically identify battery type and progressively increase charging current while monitoring for an increase in battery terminal voltage to ascertain the level of load current. The battery temperature may be brought into a relationship to surrounding temperature such that by applying a suitable overcharge current value and observing any resultant temperature increase, the level of remaining battery charge can be determined. For example, if the battery is found to be relatively fully discharged, a relatively high fast-charge rate may be safely applied while monitoring battery temperature. If the battery is initially relatively fully charged or reaches such a state during fast charge, the system may automatically dynamically select a maintenance charge rate according to battery type and temperature. A preferred system may automatically recharge the batteries of a portable device according to an optimum schedule of essentially maximum safe charging rates as a function of battery temperature, and thereafter safely maintain the batteries at essentially fully charged condition in readiness for maximum duration portable operation.
REFERENCES:
patent: 3599071 (1971-08-01), Lapuyade et al.
patent: 3911350 (1975-10-01), Swope
patent: 3917990 (1975-11-01), Sherman, Jr.
patent: 4125802 (1978-11-01), Godard
patent: 4237411 (1980-12-01), Kothe et al.
patent: 4308493 (1981-12-01), Kothe et al.
patent: 4346336 (1982-08-01), Crawford
patent: 4370606 (1983-01-01), Kakumoto et al.
patent: 4424476 (1984-01-01), Mullersman
patent: 4455523 (1984-06-01), Koenck
patent: 4553081 (1985-11-01), Koenck
patent: 4607208 (1986-08-01), Vreeland
patent: 4649333 (1987-03-01), Moore
patent: 4670703 (1987-06-01), Williams
patent: 4692682 (1987-09-01), Lane et al.
patent: 4709202 (1987-11-01), Koenck et al.
patent: 4716354 (1987-12-01), Hacker
patent: 4829226 (1989-05-01), Nakamura et al.
patent: 4833390 (1989-05-01), Kumada et al.
patent: 4885523 (1989-12-01), Koenck
patent: 5013993 (1991-05-01), Bhagwat et al.
Becker Ronald D.
Koenck Steven E.
Miller Phillip
Norand Corporation
Peckman Kristine L.
LandOfFree
Fast battery charger does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fast battery charger, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fast battery charger will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1785215