Charge control circuit

Details Charge control circuit Charge control circuit

1995-06-30

1997-06-24

Wong, Peter S.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 12, 320 61, H01M 1046, H02J 700

Patent

active

056420307

ABSTRACT:
A control circuit including a relay switch having a fixed terminal adapted to be coupled to a terminal of the battery or the charging source, a normally-closed contact terminal adapted to be coupled to a terminal of the other of one of the battery and the charging source, a normally-open contact terminal, and a relay coil. The control circuit further includes a comparator circuit for coupling to terminals of the battery to sense the voltage of the battery, and coupled to the relay coil to energize the relay coil causing a connection between the fixed terminal and the normally-open terminal of the relay switch when the voltage of the battery exceeds a first voltage threshold and to de-energize the relay coil causing a connection between the fixed terminal and the normally-closed contact terminal of the relay switch when the charging voltage of the battery falls below a second voltage threshold.

REFERENCES:
patent: 4240021 (1980-12-01), Kashima et al.
patent: 4306183 (1981-12-01), Wright
patent: 4383211 (1983-05-01), Staler
patent: 4626764 (1986-12-01), Weinhardt
patent: 4742291 (1988-05-01), Bobier et al.
patent: 5153497 (1992-10-01), Eiden
Roberts, Simon, Solar Electricity: A Practical Guide to Designing and Installing Small Photovoltaic Systems, Prentice Hall, pp. 86-93.
"Owner's Manual Model C-30," Trace Engineering, 15 pages.
"Owner's Manual Model C-30A," Trace Engineering, 17 pages.

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