Power module of electric assisted bicycle

A power module of an electric assisted bicycle, comprising:

• a pedal shaft disposed along an axial direction;
• a gear-plate-output shaft disposed in parallel with the pedal shaft along the axial direction, and concentrically sleeved on the pedal shaft along a radial direction;
• a reducer comprising a reducer-output shaft and a reducer-fixed shaft disposed in parallel with the gear-plate-output shaft along the axial direction, respectively, wherein the reducer-output shaft is concentrically sleeved on the gear-plate-output shaft along the radial direction;
• a motor mechanically connected to the reducer and driving the reducer through a reducer-input shaft;
• a first sensor disposed on the reducer-fixed shaft for sensing a first torque of the reducer-output shaft acting on the reducer-fixed shaft;
• a housing comprising a frameset-fastening component and an accommodation space, wherein the accommodation space is configured to accommodate the pedal shaft, the gear-plate-output shaft, the reducer and the motor, wherein two ends of the pedal shaft pass through the housing, respectively, the reducer-fixed shaft is connected to the housing, and the frameset-fastening component protruding outwardly from the housing is configured to fix the power module on a frameset;
• a second sensor disposed on the frameset-fastening component for sensing a second torque of the power module acting on the frameset;
• and
• a driving controller electrically connected to the motor, the first sensor and the second sensor, wherein the driving controller controls the motor in accordance with a difference value between the second torque and the first torque.