Quick charge control apparatus and control method thereof

Details Quick charge control apparatus and control method thereof Quick charge control apparatus and control method thereof

1991-09-30

1993-04-06

Stephan, Steven L.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 27, 320 43, H02J 704

Patent

active

052006905

ABSTRACT:
A apparatus for quick charging either a Nickel-Cadmium battery or a Nickel-Metal hydride battery. An adaptor/charger is comprised of a constant current circuit for maintaining a constant charging current, a switching circuit for switching a current value of this constant current circuit, and a microcomputer for effecting several controls. In the initial stage of the quick charge, the microcomputer causes the charging current to be increased in steps every predetermined period. The quick charge control apparatus is further provided with a switch to discern whether the secondary battery is a Nickel-Cadmium battery or a Nickel-Metal hydride battery so that the identification of the completion of charge is changed corresponding to each type of battery.

REFERENCES:
patent: 4303876 (1981-12-01), Kelly, III et al.
patent: 4387332 (1983-06-01), Oyamada et al.
patent: 4779035 (1988-10-01), Engelmann
patent: 4792743 (1988-12-01), Tsujino et al.

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