Speed control circuit for golf carts and the like

Details Speed control circuit for golf carts and the like Speed control circuit for golf carts and the like

1984-10-29

1986-01-07

Roskoski, Bernard

Electricity: motive power systems

Battery-fed motor systems

318257, 318442, H02P 110

Patent

active

045636214

ABSTRACT:
A special control circuit for a golf cart or like vehicle powered by a plurality of storage batteries. The batteries are connected circuitwise to a DC motor by speed control contactors to select battery connections in parallel, parallel/series and series for motor speed control. The speed control contactors are arranged so that their solenoids are de-energized at series battery connection and in parallel battery connection charges are normalized across the batteries. Moreover, the circuit provides different sets of parallel/series batteries for intermediate speed to equalize battery change levels. A safety circuit feature prevents the motor in reverse directional operation from being shifted from the low speed settings. Discharge of any battery below minimum operating voltage de-energizes the solenoids of the contactors to stop the vehicle.

REFERENCES:
patent: 3188543 (1965-06-01), Colvill et al.
patent: 3241019 (1966-03-01), Gross
patent: 3243678 (1966-03-01), Frier
patent: 3696279 (1972-10-01), Gyori
patent: 3702959 (1972-11-01), Le Gloan
patent: 3818293 (1974-06-01), Wood et al.
patent: 3984744 (1976-10-01), Moody

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