Patent ID: 9115791
Filing Date: 2015-08-25
Classification: B60K,B60L,F16H,Y02T

Abstract:
1. A shifting apparatus for an electric vehicle, comprising: a sun gear freely rotating about a motor driving shaft of the electric vehicle; a brake device fixed to a transmission housing and selectively fixing the sun gear while the motor is driven; a carrier fixed to the motor driving shaft and supporting a planetary gear engaging the sun gear; a ring gear engaging the planetary gear while enclosing the planetary gear; an output gear connected to the ring gear and connected to the motor driving shaft by a one-way clutch; and a controller having a first speed mode and a second speed mode, wherein driving force is directly transferred to the output gear through the one-way clutch in the first speed mode, wherein the brake device is engaged in the second speed mode fixing the sun gear with respect to the transmission housing thereby allowing a rotation speed of the output gear to be increased due to the rotation of the ring gear by the planetary gear, and wherein the motor driving shaft further includes a dog clutch disposed between the motor driving shaft and the output gear to allow the motor driving shaft to selectively connect with the output gear.