Abstract: The present application relates to a speed reduction rotation device based on photovoltaic modules, which includes a high tooth-slot torque permanent magnet motor and a planetary reducer. The output of the motor is connected to the input of the planetary reducer. The motor includes a stator body with multiple stator slots and a rotor body with permanent magnets, where the ratio of stator slots to magnets is a multiple of 3:2. This application utilizes the high tooth-slot torque of the permanent magnet motor, which, when amplified by the speed ratio of the planetary reducer, achieves sufficient reverse braking torque to resist reverse torque on the actuator shaft caused by external forces. Additionally, replacing the worm gear reducer with the planetary reducer for speed reduction and rotation of the actuator shaft improves service life, energy efficiency, and reliability while reducing product costs.

Abstract: A modular vehicle engine component actuator comprising a first module including a motor, a printed circuit board, and a motor shaft. A second module includes a gear train and an output shaft. The first module is coupled to the second module in a relationship with the motor shaft extending into the second module and into coupling relationship with the gear train in the second module. The first and second modules define respective first and second openings and interior cavities in communication with each other. The first and second modules are coupled together in a relationship with the printed circuit board positioned between the motor in the first module and the gear train in the second module. The motor shaft extends through a hole in the printed circuit board and into coupling relationship with the gear train in the second module.