Patent ID: 8328683

Claim:
A transmission assembly for an electric vehicle comprising: a transmission including an input shaft, an output shaft, and a gear train coupled between the input shaft and the output shaft; a motor including an output coupled to the input shaft of the transmission; a motor controller electrically connected to the motor, with the motor controller controlling a rotating speed of the motor; a gear controller electrically connected to the motor controller, with the gear controller outputting a speed request signal to the motor controller, and with the motor controller controlling the rotating speed of the motor based on the speed request signal to synchronize rotating speeds of the input shaft and the output shaft of the transmission; and a gearshift assembly having a gear shift rod, a pivotable arm with a first end coupling with the gear shift rod and a second end, a first sensor connecting to a bottom end of the gear shift rod, and a second sensor coupling with the second end of the pivotable arm, wherein the gear controller comprises a first driving module electrically connecting with the first sensor, a second driving module electrically connecting with the second sensor, a shifting unit mechanically coupling to the gear train of the transmission, a first linking rope linking the first driving module and the shifting unit, and a second linking rope linking the second driving module and the shifting unit.