Controller for battery charger

Details Controller for battery charger Controller for battery charger

1985-09-03

1988-05-24

Hickey, R. J.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 14, 320 21, 320 31, 320 39, H02J 704, H01M 1044

Patent

active

047468521

ABSTRACT:
A controller for a battery charger terminates battery charging operation as a function of a time derivative of measured battery voltage. The controller has analog and digital embodiments. A controller with means for determining a time derivative of the measured battery voltage, determining a change in slope of the time derivative, and using said change in slope as a control function for the battery charger.

REFERENCES:
patent: 3597673 (1971-08-01), Burkett et al.
patent: 4006396 (1977-02-01), Bogut
patent: 4134056 (1979-01-01), Fukui et al.
patent: 4213081 (1980-07-01), Taylor
patent: 4354148 (1982-10-01), Tada et al.
patent: 4385269 (1983-05-01), Aspinwall et al.
patent: 4388582 (1983-06-01), Saar et al.
patent: 4503378 (1985-03-01), Jones et al.
patent: 4639655 (1987-01-01), Westhaver et al.

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