Battery charger control circuit

Details Battery charger control circuit Battery charger control circuit

1981-11-18

1983-11-29

Shoop, William M.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 37, H02J 704

Patent

active

044183100

ABSTRACT:
An automatic battery charging apparatus is provided with a regulated battery charger (15) and a control circuit (20) for monitoring the actual voltage across the battery terminals to control the operation of contactor (25). The control circuit includes means (50) for sensing the average battery voltage at regular intervals and means (55, 60) for comparing successive average battery voltage readings. Whenever the present average voltage reading differs from the previous average battery voltage reading by less than a predetermined amount, a signal (63) is applied to a circuit (65), and whenever a predetermined number of consecutive voltage readings have been detected, a logic circuit (70) causes the contactor (25) to terminate the charging operation.

REFERENCES:
patent: 3098188 (1963-07-01), Dawkins
patent: 3424969 (1969-01-01), Barry
patent: 3617851 (1971-11-01), DuPuy et al.
patent: 3794905 (1974-02-01), Long
patent: 3886428 (1975-05-01), Macharg
patent: 3895282 (1975-07-01), Foster et al.
patent: 4091320 (1978-05-01), Foster
patent: 4191918 (1980-03-01), Nicholls
patent: 4227141 (1980-10-01), Cross
patent: 4240021 (1980-12-01), Kashima et al.

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