Patent ID: 11927253
Assignee: HYUNDAI MOTOR COMPANY
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  B | IPC B  F

Claim 0:
1. A powertrain for an electric vehicle, the powertrain comprising:
a planetary gear having a first rotating element, a second rotating element, and a third rotating element, wherein the first rotating element is connected to a first shaft and the second rotating element is connected to a second shaft;
a first motor configured to selectively supply power to the first shaft at two or more gear ratios;
a first shift assembly configured to transfer power of the first motor to the first shaft through one of two or more external engagement gear trains having different gear ratios; and
a second motor configured to selectively supply power to the first shaft and the second shaft,
wherein:
the first shift assembly includes a gear engagement unit, a hub and a sleeve of which are provided on a rotating shaft of the first motor;
a first gear and a second gear are rotatably provided on both sides of the hub, respectively;
a third gear in external engagement with the first gear and a fourth gear in external engagement with the second gear are coaxially connected to each other via a shaft;
a fifth gear is disposed on the shaft of the third gear and the fourth gear such that rotation of the fifth gear is restrained; and
a sixth gear in external engagement with the fifth gear is disposed on the first shaft such that rotation of the sixth gear is restrained.