Battery charger

Details Battery charger Battery charger

1986-09-02

1987-12-29

Hickey, R. J.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 37, 320 51, 323301, H02J 700, G05F 500

Patent

active

047163534

ABSTRACT:
A battery charging system including a plurality of transformers each having a primary winding, a secondary winding, and a tertiary windings, the primary windings being connected in series forming a "shared primary", a first switching network for connecting a DC voltage across the shared primary winding, in alternating polarity over successive half-cycles of a clock signal, for causing voltage pulses to be induced into the secondary and tertiary windings of the transformers, a second switching network responsive to the magnitude of primary current for shorting the same or different combinations of the tertiary windings, thereby shorting the associated transformers, over each half-cycle of a clock signal, for controlling the magnitude of charging current to the batteries, and a plurality of rectifiers for rectifying the AC voltages developed in each secondary winding, respectively, for providing charging current to the battery.

REFERENCES:
patent: 2783430 (1957-02-01), Bower
patent: 3090904 (1963-05-01), Jensen
patent: 3775660 (1973-11-01), Potts
patent: 4011499 (1977-03-01), Betsill et al.
patent: 4013941 (1977-03-01), Moore
patent: 4673888 (1987-06-01), Engelmann et al.

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