Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1985-12-23
1987-05-19
Hickey, R. J.
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
320 32, 320 35, H02J 704
Patent
active
046671439
ABSTRACT:
A battery charging circuit is disclosed which rapidly charges a battery from some level of discharge, including fully discharged, to fully charged without endangering the battery. The charging circuit includes a control circuit which provides switching type regulation responsive to current, voltage and temperature signals from the battery, and also a timer circuit for automatically halting the charging current to a defective battery. The control circuit receives a temperature compensated voltage signal (TCVS) which is useful for effectively implementing a charging program which includes a low constant current mode, a high constant current mode, and a constant voltage mode. The TCVS is generated by connecting a thermistor responsive to battery temperature in parallel with one resistor of a resistive voltage divider network which is connected across the battery terminals. The output of the thus modified voltage divider network when plotted against temperature is a nonlinear curve which, with proper selection of ohmic values for the resistors and thermistor, corresponds to a temperature/voltage relationship for the battery which is known from experimental results to be effective for charging the battery.
REFERENCES:
patent: 3889171 (1975-07-01), Hunter
patent: 3919616 (1975-11-01), Allison
patent: 3944904 (1976-03-01), Hase
patent: 3959707 (1976-05-01), Stephens
patent: 4006397 (1977-02-01), Catotti et al.
patent: 4061956 (1977-12-01), Brown et al.
patent: 4146830 (1979-03-01), Foster
patent: 4233553 (1980-11-01), Prince et al.
patent: 4282292 (1981-08-01), Stewart
patent: 4316133 (1982-02-01), Locke, Jr. et al.
patent: 4433277 (1984-02-01), Carollo et al.
patent: 4584514 (1986-04-01), Kaminski
Cooper Craig L.
Klein Fred T.
Bogatie George E.
Hickey R. J.
Phillips Petroleum Company
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