Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1977-01-28
1978-03-28
Hickey, Robert J.
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
320 35, 320 39, 320DIG2, H02J 710
Patent
active
040817393
ABSTRACT:
The circuit includes voltage supply terminals for connection to a voltage source and battery connection terminals for connection to a battery to be charged. Circuitry connects the voltage supply terminals to the battery connection terminals for the transmission of a charging voltage and provides a current path for the flow of charging current. A controllable switch is connected to the charging current path and has conductive and non-conductive states. A second controllable switch is connected to the first controllable switch and is operative upon the receipt of a control signal having a predetermined threshold value for changing the state of the first controllable switch. The second controllable switch receives a control signal whose value varies in dependence upon variations in the charging current and/or the charging voltage. Circuitry is provided for changing the threshold value of the second controllable switch in automatic dependence upon changes in the charging current and/or the charging voltage.
REFERENCES:
patent: 3538415 (1970-11-01), Wilson
patent: 3586955 (1971-06-01), Kisiel
patent: 3748568 (1973-07-01), Ackermann
patent: 3876921 (1975-04-01), Bigbee
patent: 3969665 (1976-07-01), Rowas
patent: 3979658 (1976-09-01), Foster
patent: 4006397 (1977-02-01), Catotti et al.
Braun Aktiengesellschaft
Hickey Robert J.
Striker Michael J.
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