Automatic charging apparatus

Details Automatic charging apparatus Automatic charging apparatus

1994-06-01

1995-12-19

Wong, Peter S.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

H02J 710

Patent

active

054771285

ABSTRACT:
An automatic charging apparatus comprises a rectifier circuit composed of a plurality of diodes and thyristors, said diodes and thyristors being arranged in a bridge connection, a phase control circuit for obtaining the charging voltage of a battery by controlling the phase of said thyristors, a voltage setting resistor for setting a charging voltage suitable for the state of said battery, a current setting resistor for setting a charging current suitable for the state of said battery and a current control circuit which obtains the charging current best suited to the state of the battery by controlling the pulse width of base current flowing in a transistor connected to the outputs of said thyristors. As a result, it is possible to efficiently charge the battery with charging voltage and current best suited to the state of the battery even if the battery is of large capacity.

REFERENCES:
patent: 3736490 (1973-05-01), Fallon et al.
patent: 3987354 (1976-10-01), Mason
patent: 4031451 (1977-06-01), Gordon
patent: 4128798 (1978-12-01), Takei
patent: 5029266 (1991-07-01), Randolph
patent: 5051883 (1991-09-01), Cheng
patent: 5179335 (1993-01-01), Nor
patent: 5254930 (1993-10-01), Daly

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