Power module of electric assisted bicycle

A power module of an electric assisted bicycle, comprising:

• a housing with which a radial direction and an axial direction are defined, and comprising a middle frame and a partition portion, wherein the partition portion is extended along the radial direction toward an inner space of the housing, and divides an inner space of the housing into a motor accommodation portion and a reducer accommodation portion arranged along the axial direction;
• a pedal shaft accommodated in the housing, and extended along the axial direction;
• a motor accommodated in the motor accommodation portion, and comprising a stator fixed to a first side of the partition portion;
• a reducer accommodated in the reducer accommodation portion, and comprising a reducer input shaft, a movable gear, a fixed gear and a reducer output shaft, wherein the fixed gear is sleeved around the movable gear, the fixed gear is fixed to a second side of the partition portion, and the first side and the second side are opposite to each other, wherein the reducer output shaft is connected to the movable gear along the axial direction, the reducer input shaft comprises an input-shaft main part, an input-shaft rotor part and an input-shaft eccentric part, the movable gear is sleeved around the input-shaft eccentric part, the input-shaft rotor part is connected to an output shaft of the motor along the radial direction, the input-shaft main part is connected to a third side of the partition portion, and the third side is connected between the first side and the second side;
• a gear-plate output shaft accommodated in the housing, wherein the reducer output shaft is sleeved around the gear-plate output shaft through a gear-plate-output-shaft first one-way bearing, and the gear-plate output shaft is sleeved around a first end of the pedal shaft through a gear-plate-output-shaft second one-way bearing;
• a pedal-shaft first two-way bearing accommodated in the housing, and sleeved around a second end of the pedal shaft;
• and
• a sensing component attached to the pedal shaft, and disposed adjacent to one side of the pedal-shaft first two-way bearing along the axial direction.