Input shunt type two-gear transmission system for hybrid power automobile and automobile

The invention belongs to the technical field of automobile hybrid power, and particularly relates to an input shunt type two-gear transmission system for a hybrid power automobile and the automobile.The input shunt type two-gear transmission system for the hybrid power automobile comprises an engine, a motor, a starting and power generating integrated machine, a clutch, a brake, a planetary geartrain, a speed reducing mechanism and a differential mechanism. The clutch comprises a motor clutch. The brake comprises an engine brake and a motor brake. The planetary gear train comprises a sun gear, a planet gear, a planet carrier and an inner gear ring. The engine is connected with the planet carrier through the engine brake, the motor is connected with the inner gear ring through the motor clutch and the motor brake, and the starting and power generating integrated machine is connected with the sun gear through a single-speed-ratio gear. The output torque of the inner gear ring is coupled with the torque of the m