Patent ID: 9067485
Filing Date: 2015-06-30
Classification: B60K,B60W,B60Y,Y02T,Y10T

Abstract:
1. A drive device for a vehicle, comprising: an electric drive that generates a drive power of the vehicle; a two-way power transmission device disposed on a drive power transmission passage between the electric drive and a wheel, wherein the two-way power transmission device is configured to make an electric motor side and a wheel side of the drive power transmission passage in a disconnected state or in a connected state when being engaged or released; a one-way power transmission device disposed on the drive power transmission passage in parallel with the two-way power transmission device, wherein the one-way power transmission device is in an engaged state when a rotation power of the electric drive in a forward direction is inputted to the wheel; the one-way power transmission device is in a released state when a rotation power of the electric drive in a reverse direction is inputted to the wheel; the one-way power transmission device is in the released state when a rotation power of the wheel in the forward direction is inputted to the electric drive; and the one-way power transmission device is in the engaged state when a rotation power of the wheel in the reverse direction is inputted to the electric drive; a reducer disposed on the drive power transmission passage so as to change a rotation speed of the electric drive and a rotation speed of the wheel, wherein the reducer is a planetary gear reducer comprising three rotation elements, wherein: the one-way power transmission device and the two-way power transmission device are connected to a first rotation element that is one of the three rotation elements of the reducer; the electric drive comprises: a first electric motor disposed on a left side in a vehicle width direction of the vehicle; and a second electric motor disposed on a right side in the vehicle width direction; the reducer comprises: a first reducer disposed on the left side in the vehicle width direction; and a second reducer disposed on the right side in the vehicle width direction; a rotation power of the first electric motor is transmitted to a left wheel via the first reducer; a rotation power of the second electric motor is transmitted to a right wheel via the second reducer; the first electric motor and the first reducer are disposed in this order from an outside in the vehicle width direction; the second electric motor and the second reducer are disposed in this order from an outside in the vehicle width direction; when the rotation power of the wheel in the forward direction is inputted to the electric drive and the one-way power transmission device is in the released state, the two-way power transmission device is engaged to make the electric motor side and the wheel side in the connected state.