The invention relates to a
hybrid drive technology structure of a
hybrid power automobile, in particular to a multi-gear
hybrid drive
system based on a planetary
gear train, the structure point is that it also includes a
planet wheel
system, a second
clutch and a second
brake, wherein the planetary wheel
system includes an inner ring gear, sun gear and
planet carrier, one end of the generator shaft is fixedly connected with the inner ring gear, the inner hub of the first
brake is fixedly connected with the motor rotor and the inner ring gear of the generator, the inner ring gear is connected with the
planet carrier through the second
clutch, a plurality of planet wheels with the same structure are uniformly distributed on the planet carrier along the circumferential direction; the sun gearis fixedly connected with the driving
motor shaft, a second
brake is arranged on the driving
motor shaft, the inner hub of the second brake is fixedly connected with the driving motor and the sun wheel, and the planet carrier is fixedly connected with the
power output shaft. The invention has the advantages that the dynamic property and the energy utilization efficiency of the
hybrid power automobile under different working conditions are improved, the volume weight of the motor of the engine is reduced, the use occasions of the
hybrid power automobile are expanded, and it is particularly suitable for
engineering machinery vehicles requiring multiple gears and large transmission ratios.