Stator assembly and manufacturing method therefor, and motor

A manufacturing method for making a stator assembly, comprising:

• performing insert molding on a single stator core to form a stator core with an insulating frame;
• winding a stator winding onto the stator core with the insulating frame, and forming a wiring terminal for each stator winding;
• splicing the single stator core wound with the stator winding along a circumferential direction to form a stator;
• mounting a main control board with connection slots at an axial outer end of the stator, and mounting the wiring terminals in the connection slots in a one-to-one correspondence manner;
• and
• electrically connecting the wiring terminal to a first conductive portion on an inner wall of the connection slot by welding.

An electric motor, comprising:

• a shell;
• a rotor assembly;
• and
• a stator assembly disposed in the shell, the stator assembly comprising a stator and a main control board disposed at an axial outer end of the stator, the stator comprising a plurality of stator cores, the stator cores being wound with stator windings, the stator windings comprising wiring terminals, wherein the main control board has at least two connection slots that are spaced apart, at least a portion of an inner wall of each connection slot is provided with a first conductive portion, and each wiring terminal is disposed in a corresponding connection slot and electrically connected to the first conductive portion.