Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1980-09-05
1982-02-16
Hickey, Robert J.
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
320 35, 307 66, 340636, H02J 700, H02J 900
Patent
active
043161332
ABSTRACT:
A battery charging circuit for continuously charging a back-up battery is disclosed. A switch conducts a charging current to the battery in response to a temperature variable resistor. The charging current is a function of both the temperature and the battery voltage such that the charging current is matched to the charging characteristics of the battery. Additional features include the establishment of a minimum charging current and the capability of testing the battery under load conditions.
REFERENCES:
patent: 3596106 (1971-07-01), Raddi
patent: 3833817 (1974-09-01), Patel
patent: 3969665 (1976-07-01), Rowas
patent: 3997831 (1976-12-01), Hopfner
patent: 4147969 (1979-04-01), Miller et al.
patent: 4186335 (1980-01-01), Cahill
"Sealed Maintenance-Free Batteries", The Primary Battery, vol. 2, Cahoon & Heise (1976), pp. 371-377.
"Thermistor Temperature Sensing", Nickel-Cadmium Battery Application Engineering Handbook, 2nd Ed., (1975), pp. 5-13, 5-14.
Hickey Robert J.
Lackey D. R.
Westinghouse Electric Corp.
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