Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1977-07-05
1978-09-12
Hickey, Robert J.
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
320 16, 320 57, H02J 704
Patent
active
041140826
ABSTRACT:
A pair of batteries of equal voltage rating are connected together in parallel through isolation diodes and in series through a first silicon controlled rectifier, the gate electrode of which is connected to the positive terminal of the first battery through a second silicon controlled rectifier and the emitter-collector switch circuit of a switching transistor. The gate electrode of the second silicon controlled rectifier is connected to said positive terminal through a capacitor and said transistor switch. The base-emitter switch actuator circuit of the switching transistor is connected across the first battery in a manner to maintain the transistor normally activated, whereby the impulse generated from the instantaneous voltage drop across said first battery, upon energization of an electric load connected thereto, is applied through said transistor switch to the gate electrode of the second silicon controlled rectifier, activating the latter to supply power to the gate electrode of the first silicon controlled rectifier, thereby turning the latter on and connecting the pair of batteries together in series. Conductors connected across the first silicon controlled rectifier are arranged for connection to the output terminals of a conventional battery charging source, rated for charging one of the pair of batteries, the isolation diodes maintaining the batteries in parallel during charging.
REFERENCES:
patent: 3286152 (1966-11-01), Noe
patent: 3763415 (1973-10-01), Ownby
patent: 3871383 (1975-03-01), Lee
Hickey Robert J.
Olson Oliver D.
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