Controlled fast charger

Details Controlled fast charger Controlled fast charger

1981-01-16

1984-01-03

Shoop, William M.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

H02J 710

Patent

active

044244762

ABSTRACT:
A charger supplies a battery of sealed electrochemical cells with fast rate charging current in a controlled manner. A controllable circuit element is connected between the charge current source and the battery. This element is caused to modulate the charge current in a manner so as to initially fast charge the sealed battery, but to limit its subsequent rise in temperature above the ambient to a predetermined small differential and to maintain that differential. This temperature rise limit brings about a reduction of charge rate as the battery approaches the full charged condition resulting in an acceptable current level for long term overcharge operation.

REFERENCES:
patent: 3534241 (1970-10-01), Wilson et al.
patent: 3917990 (1975-11-01), Sherman, Jr.
patent: 4125802 (1978-11-01), Godard
New Monolithic Ic's Simplify Charging Batteries, Robert C. Dobkin, "Wescon/79 Conference Record", Aug. 1979, pp. 1-3.

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