STATOR, ELECTRIC MOTOR AND ELECTRIC VEHICLE

A stator, a motor, and an electric vehicle are provided. The stator includes: a housing, where the housing has an accommodation space, and an oil inlet that communicates with the accommodation space is disposed on the housing; a ring-shaped iron core punching sheet, where the iron core punching sheet is disposed in the accommodation space, and abuts against an inner wall of the housing, the iron core punching sheet includes a yoke part and a plurality of tooth parts, the plurality of tooth parts are evenly distributed on an inner side of the yoke part in a circumferential direction, a stator slot is disposed between adjacent tooth parts, a first cooling channel is disposed between an outer edge of the yoke part and the housing, and a second cooling channel located between adjacent tooth parts is disposed on an inner edge of the yoke part; a spacer sleeve, where the spacer sleeve is sleeved in the iron core punching sheet, an outer surface of the spacer sleeve abuts against a side that is of the tooth part and that faces away from the yoke part, and a slot opening of the stator slot fits with the spacer sleeve to form a third cooling channel; and a flow guiding assembly, where the flow guiding assembly is disposed in the accommodation space, and is configured to guide, in a direction from the first cooling channel to the second cooling channel and then to the third cooling channel, coolant oil flowing out of the oil inlet. The three-layer oil-injection cooling design can improve a heat dissipation capability of the stator.