| 摘要 |
A power transmission device of a hybrid vehicle is provided to use a motor and a battery of low power by selecting efficient power transmission path in low and high speed sections by selectively controlling a power transmission path and by reducing a speed of a motor by preventing energy circulation in the high speed section. A power transmission device of a hybrid vehicle that includes two motors(20A,20B), one engine(10) and provides rotation power of the motor or engine to wheels, which comprises a first planetary gear unit(110) whose first rotation shaft is connected to a rotation shaft of a first motor and a second rotation shaft thereof is connected to a rotation shaft of the engine, a second planetary gear unit(120) whose first rotation shaft is connected to wheels and a third rotation shaft of the first planetary gear unit and a second rotation shaft thereof is connected to the first rotation shaft of the first planetary gear unit, a third planetary gear unit(130) whose first rotation shaft is connected to a rotation shaft of a second motor and a second rotation shaft thereof is connected to the second rotation shaft of the second planetary gear unit, a first clutch(140A) whose one end is connected to an arbitrary fixed end and the other end is connected to the third rotation shaft of the third planetary gear unit for controlling rotation the third rotation shaft of the third planetary gear unit, and a second clutch(140B) opening/closing a rotation force transmission path between the third rotation shaft of the second planetary gear unit and the third rotation shaft of the third planetary gear unit. |
