Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1976-12-20
1979-04-03
Hickey, Robert J.
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
320 32, 320 39, H02J 704
Patent
active
041479700
ABSTRACT:
A direct current power supply device for rectifying an a-c voltage of external power supply and supplying d-c power to a battery and/or a d-c load characterized in that it comprises a current detector to detect a current component flowing to the battery, a voltage detector to detect a terminal voltage of the battery, a control circuit controlled by the current detector and the voltage detector, a leakage transformer functioning by external a-c power supply, and a charging converter circuit for supplying d-c power to the battery, the charging converter circuit being controlled by the control circuit and supplied power from the output of the leakage transformer, the control circuit comprising a maximum value detecting circuit to combine output voltage of the circuit detector and the voltage detector, a switching circuit controlled by the maximum value detecting circuit, a pulse generating circuit in which pulse rise time controlled by the switching circuit and a switching control circuit controlled by the pulse generating circuit, whereby the direct current power supply device is provided a predetermined current-voltage characteristic.
REFERENCES:
patent: 3736490 (1973-05-01), Fallon et al.
patent: 3758839 (1973-09-01), Medlar
patent: 4019111 (1977-04-01), Bennefeld
patent: 4031451 (1977-06-01), Gordon
Katayama Naohiro
Okuda Yukio
Hickey Robert J.
Sawafuji Electric Co. Ltd.
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