Abstract: A drive assembly for an electric vehicle comprises a D.C. electric motor and an integrated charger controller for controlling the D.C. electric motor in a drive mode of operation and for charging a battery in a charge mode of operation. The integrated charger/controller includes a power module, (ii) a step-down module, and (iii) a control circuit. During the charge mode of operation, the input of the power module is connected to an electric power source and the power module provides a D.C. current output. Selected switches of the control circuit connect the output of the power module to the input of a step-down module, and connect the output of the step-down module to the terminals of the battery to charge it during the drive mode of operation, selected switches of the control circuit connect the terminals of the battery to the input of the power module, and connect the output of the power module to the D.C. motor to control the D.C. motor.

Abstract: A drive assembly comprises a DC electric motor and an integrated charger/controller/regenerator which includes a power module, a step-up module and a control circuit. The input of the power module is connected to an electric power source during charging, and to the DC motor during regenerative braking. The input of the step-up module is connected to the power module, and the output is connected to the battery. The control circuit includes a switch, and has three modes of operation: driving, regenerative braking and charging. During driving, the switch connects the battery to the power module input and the power module output to the DC motor. During regenerative braking, the switch connects the DC motor to the power module input and the power module output to the step-up module input, and the step-up module output charges the battery. During charging, the switch connects the power module output to the step-up module input, and the step-up module output charges the battery.

Abstract: A drive assembly comprises a DC electric motor and an integrated charger/controller/regenerator which includes a power module, a step-down module and a control circuit. The input of the power module is connected to an electric power source during charging, and to the DC motor during regenerative braking. The input of the step-down module is connected to the power module, and the output is connected to the battery. The control circuit includes a multiplicity of switches, and has three modes of operation: driving, regenerative braking and charging. During driving, the switches connect the battery to the power module input and the power module output to the DC motor. During regenerative braking, the switches connect the DC motor to the power module input and the power module output to the step-down module input, and the step-down module output charges the battery. During charging, the switches connect the power module output to the step-down module input, and the step-down module output charges the battery.