Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1985-03-18
1986-04-22
Salce, Patrick R.
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
320 37, 320 40, 320 48, 320 59, 363 41, 363 56, H02J 704
Patent
active
045845140
ABSTRACT:
A power supply for charging a storage battery includes a switching pulse width modulator for controlling the current flowing from an input rectifier to an output transformer. The input rectifier is convertable from a full-wave bridge to a voltage doubler for operation at two different line voltages. A current limiting circuit and a charging voltage control circuit are both responsive to sensed output current to closely match the output of the power supply to the charging capacity of the battery. An overcurrent sensing circuit protects the power supply and battery against the results of line transients and shorted battery cells. A sensing circuit detects the absence of a battery, and an end-of-charge sensing circuit detects full charge voltage. A latching circuit disables the power supply on detection of overcurrent, absence of a battery, or full charge voltage.
REFERENCES:
patent: 3389324 (1968-06-01), Ballman
patent: 4032830 (1977-06-01), Buonavita
patent: 4330816 (1982-05-01), Imazeki et al.
PWM Battery Charger, 2420 Elektor, vol. 6 (1980), Jul./Aug.
Direct Line and Doubler Rectifier Assembly, J. R. Cielo and S. K. Rao, IBM Technical Disclosure Bulletin, vol. 14, No. 3, Aug. 1971.
Allied Corporation
Ault Anita M.
Cortina Anibal Jose
Salce Patrick R.
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