Stator core, stator assembly and motor

The stator core comprises a yoke part and a plurality of tooth parts connected with the inner side edge of the yoke part, the yoke part and the tooth parts are all oriented silicon steel sheets, the yoke part is formed by winding the oriented silicon steel sheets, the tooth parts are formed by stamping the oriented silicon steel sheets, and the winding direction of the yoke part is the same as the rolling direction of the yoke part. In the utility model, oriented silicon steel is used as the material of the stator punching sheet to form the oriented silicon steel punching sheet. The oriented silicon steel sheets corresponding to the yoke parts are spirally stacked in a winding mode to form the magnet yoke of the stator iron core, so that the magnet yoke of the stator iron core is an integral body, an additional splicing structure is not needed, and the utilization rate of materials can be improved; moreover, the magnet yoke of the stator core does not have gaps due to splicing along the axis, and the tooth cr