Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1987-05-06
1990-01-30
Hickey, R. J.
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
320 39, H02J 704
Patent
active
048975915
ABSTRACT:
The present invention is an electrical circuit for regulating the average current through and the voltage across a load, such as a rechargeable battery. The circuit includes at least one semiconductor switching device connected in series with the load for controlling the current through the load. A current control loop is provided in the circuit to maintain the average current through the load at a constant level despite changes in the resistance of the load. Also provided is a voltage control loop which acts to limit the voltage across the load to a value below a predetermined voltage level.
REFERENCES:
patent: 3382425 (1968-05-01), Legatti
patent: 3925714 (1975-12-01), Sherman, Jr.
patent: 4131841 (1978-12-01), Bennefeld
patent: 4476425 (1984-10-01), Chernotsky et al.
patent: 4629965 (1986-12-01), Fallon et al.
"Sensitive Gates SCRS--Don't forget the Gate-Cathode Resistor" by T. Malarky in Engineering Bulletin.
"Charger Circuits" by Barcus et al. in Gates Battery Charger Application Manual, 1982.
"Guide to Thyristor Applications" in Motorola Semiconductor Products, Inc., 1982.
"SCR and Triac Power Control Fundamentals" in Motorola Semiconductor Products Inc., 1978.
"Charging" in Yuasa Battery Co., Ltd. Application Manual, 1986.
"General Characteristics" in Panasonic Sealed Lead-Acid Batteries Technical Handbook, 1985.
"Battery Charging Regulator" by Connolly et al. in General Electric SCR Manual Sixth Edition, 1979.
Fisher Scientific Group Inc.
Hickey R. J.
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