Charging system and method for multicell storage batteries

Details Charging system and method for multicell storage batteries Charging system and method for multicell storage batteries

1976-07-28

1978-03-14

Hickey, Robert J.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 23, 320 39, H02J 708

Patent

active

040793036

ABSTRACT:
A battery-charging system includes a first charging circuit connected in series with a plurality of battery cells for controlled current charging. A second charging circuit applies a controlled voltage across each individual cell for equalization of the cells to the fully charged condition. This controlled voltage is determined at a level above the fully charged open-circuit voltage but at a sufficiently low level to prevent corrosion of cell components by electrochemical reaction. In this second circuit for cell equalization, a transformer primary receives closely regulated, square-wave voltage which is coupled to a plurality of equal secondary coil windings. Each secondary winding is connected in parallel to each cell of a series-connected pair of cells through half-wave rectifiers and a shared, intermediate conductor.

REFERENCES:
patent: 3280397 (1966-10-01), Bruns
patent: 3305754 (1967-02-01), Oaks et al.
patent: 3454859 (1969-07-01), Ford et al.

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