Method of and device for reducing charging time of batteries and

Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries

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320 21, 318345E, H02J 700, H02J 704, H02P 726

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active

045688699

ABSTRACT:
A method of reducing charging time of batteries and increasing power and torque of electric motors includes the step of repeatedly applying to the battery to be charged or the motor to be operated a series of relatively short pulses of relatively high voltage followed by a continuation of the high voltage pulse which is of relatively long duration and of relatively low voltage. The relatively high voltage is substantially greater than the normal charging voltage of the battery or the rated voltage of the motor while the relatively low voltage is the normal charging voltage of the battery or not greater than the rated voltage of the motor. The duration of the relatively short pulse is such that excessive heating due to current flow does not occur.
The device of the invention includes a first pulse generator and a second pulse generator with a timing clock to control operation of each pulse generator. Preferably both pulse generators are initiated at the same time, the relatively short high voltage pulse being generated by one of the pulse generators and superimposed on the relatively low voltage pulse generated by the other generator which continues after termination of the high voltage pulse.

REFERENCES:
patent: 2877291 (1959-03-01), Bernard et al.
patent: 2881311 (1959-04-01), Tykulsky
patent: 2930848 (1960-03-01), Fathauer
patent: 3258671 (1966-06-01), Wales
patent: 3355642 (1967-11-01), Leenhouts
patent: 3414795 (1968-12-01), Weiser
patent: 3963976 (1976-06-01), Clark
Mims, III; Forrest M., Engineer's Notebook, pub. by Radio Shack, 1979, p. 124.

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