SYSTEM AND METHOD FOR CONTROLLING THE TRANSMISSION OF HIGH VOLTAGE CURRENT TO AN ELECTRIC MOTOR IN AN ELECTRIC VEHICLE

摘要

A system for controlling the transmission of high voltage current to an electric motor in an electric vehicle having a torque control module which controls high voltage power to the electric motor and a powertrain control module. The powertrain control module is connected to the torque control module via a low voltage enabling electrical conduit and a high voltage enabling electrical conduit. The low voltage enabling electrical conduit controls the transmission of low voltage power to the torque control module. The high voltage enabling electrical conduit directly controls a switch that controls the transmission of high voltage power from the torque control module to the electric motor. Assertion of the high voltage enabling electrical conduit closes the switch to permit the flow of high voltage power from the torque control module to the electric motor. Non-assertion of the high voltage enabling electrical conduit opens the switch to prevent the flow of high voltage power from the torque control module to the electric motor.