Patent ID: 8382624

Claim:
A powertrain for a hybrid electrical vehicle, comprising an engine, a first motor, a second motor and a transmission device, said transmission device is provided with a planet gear set with double planet gear ranks comprising a first planet gear rank and a second planet gear rank, said engine is arranged on one side of the planet gear set, said first motor and second motor are arranged on the other side of the planet gear set, said first planet gear rank comprises a small sun gear, a planet carrier, a short planet gear and an outer ring gear, said second planet gear rank comprises a big sun gear, a long planet gear and said planet carrier shared with said first planet gear rank, said long planet gear meshes with the short planet gear and the big sun gear respectively, a spindle of said big sun gear is rotatably sleeved on a spindle of the small sun gear, a crankshaft of the engine is connected to the planet carrier, the outer ring gear outputs power, the spindle of the small sun gear is connected with a rotor of the first motor, an extension of the spindle of the small sun gear is connected to one side of a second lock-up clutch to selectively lock the spindle of the small sun gear to a housing, the spindle of the big sun gear is connected with a rotor of the second motor, said planet carrier is connected to one side of a first lock-up clutch to selectively lock the planet carrier to the housing.