Charging control apparatus

Details Charging control apparatus Charging control apparatus

1988-02-23

1989-08-08

Hickey, R. J.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 21, 320 39, H02J 704

Patent

active

048556637

ABSTRACT:
A charging control apparatus comprising a switching circuit for controlling a charging current from a charging power source to a storage battery. A reference voltage is provided which increases with a ramp corresponding to a value equal to, or more than, the maximum ramp value of the charging characteristic of the battery and a reference voltage is also provided which increases with time with a ramp corresponding to a value equal to, or less than, the minimum ramp value of the charging characteristic. The terminal voltage of the battery is sensed by a voltage sensor. A first comparator compares the reference voltage and a first sensed voltage from the voltage sensor. The ramp of the reference voltage is switched in accordance with the output of the first comparator. A second comparator compares the reference voltage and a second sensed voltage from the voltage sensor. The switching circuit is controlled by the output of the second comparator.

REFERENCES:
patent: 3992658 (1976-11-01), Bechtold et al.
patent: 4354148 (1982-10-01), Tada et al.
patent: 4392101 (1983-07-01), Saar et al.
patent: 4503378 (1985-03-01), Jones et al.

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