Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1994-01-18
1997-05-27
Nappi, Robert
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
320 4, 320 35, H02J 700, H01M 1046
Patent
active
056335741
ABSTRACT:
This pulse-charge battery charger charges Nickel-Cadmium and Nickel-metal hydride batteries having one or more cells and used with cellular telephones and camcorders. A battery is lowered into a finger accessible receiving volume and held by a magnetic force. Charging automatically commences and automatically stops, as controlled by utilizing a U1 controller and other combined circuits. Charging status is indicated by colored lights: yellow--charging; green--battery is charged; orange--battery is overheated and cooling; and red--battery is defective. Other combined circuits are: power supply circuit to receive either 12.6 volt AC or DC voltage power, and to produce both a full wave rectified unregulated DC volt power source, and a regulated 5 DC volt power source; battery installed detector circuit; a reset circuit; a timing control circuit; ready light circuit; no battery then no light circuit; over temperature detection circuit; normalize circuit to accommodate battery cell arrangements; constant current source circuit; discharge control circuit; thermistor sensor control circuit; battery being charged circuit operating when a battery has an internal temperature sensor; and a battery being charged circuit operating when a battery has no temperature sensor, and the charger's external temperature sensor is relied upon. The following cycle, for example, is repeated until a battery is fully charged: 1000 milliseconds of charging; 2 milliseconds of no charging; 5 milliseconds of discharging; 10 milliseconds for a second no charging period.
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One Page Entitled "Unwanted Memory Spooks Nickel-Cadmium Cells" Written by Saverlo F. Pensabene & James W. Gould II c/o General Electric Co.
Integrated Circuit Systems, Inc. ICS1700A-Quick Saver II.TM. Controller For Nickel-Cadmium Batteries-18 Pages.
Law Patrick B.
Mattern Jr. Roy E.
Nappi Robert
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