Battery charger device

Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries

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Details

320 39, H02J 704

Patent

active

054204941

ABSTRACT:
A battery charging device capable of charging any variety of rechargeable batteries and capable of being powered by either a 110 volt or a 220 volt A.C. power source. The battery charging device comprises an integrator circuit having a D.C. power source; a voltage comparator; a solid state relay; a D.C. output circuit; a positive voltage feedback circuit; and a negative voltage feedback circuit. The integrator circuit receives A.C. power from an A.C. power source and provides an output to the voltage comparator. The voltage comparator, in turn, is connected so as to provide an output to the solid state relay. The solid state relay preferably includes a zero voltage closing circuit and provides an output to the D.C. output circuit. The D.C. output circuit is connected to a battery-to-be-charged and provides an output D.C. voltage thereto. The D.C. output circuit is also connected to and provides outputs to the negative and positive feedback circuits which, in turn, provide feedback to the voltage comparator. Preferably, optical coupling devices connect the output from the voltage comparator to the solid state relay, as well as the positive and negative feedback circuits to the voltage comparator.

REFERENCES:
patent: 3867681 (1975-02-01), Bishop et al.
patent: 3927361 (1975-12-01), Macharg
patent: 4321523 (1982-03-01), Hammel
patent: 4389608 (1983-06-01), Dahl et al.
patent: 4476425 (1984-10-01), Chernotsky et al.
patent: 4510431 (1985-04-01), Winkler
patent: 4621225 (1986-11-01), Birk
patent: 4656411 (1987-04-01), Carlson
patent: 4774449 (1988-09-01), Elkins

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