Shafting-free inner rotor permanent magnetic synchronous motor with stator water cooling structure

A shafting-free inner rotor permanent magnetic synchronous motor with a stator water cooling structure belongs to the field of motors and solves the problem that most of the existing technical schemes for cooling the motors are complex in structure, manufacture cost of the motors is increased, and motor stators can not be cooled effectively. The shafting-free inner rotor permanent magnetic synchronous motor with the stator water cooling structure comprises a rotor and a stator. The stator is arranged outside the rotor, and an air gap is arranged between the stator and the rotor. The rotor comprises rotor magnetic steel and a plurality of permanent magnets, and the plurality of permanent magnets are arranged on the outer circumferential surface of the rotor magnetic steel evenly. The stator comprises a stator core and stator windings. A plurality of stator slots are arranged inside the stator core along the peripheral direction evenly, and the stator windings are embedded in the stator slots. The stator further comprises a stator casing, the stator casing is arranged outside the stator core, an S-shaped cold water flow guiding groove, a water inlet pipeline and a water outlet pipeline are arranged inside the stator casing, and the water inlet pipeline and the water outlet pipeline both extend out of a stator casing end face and are communicated with the cold water flow guiding groove.