Stator punching sheet with circumferential flow channel, motor, power assembly and electric vehicle

The invention relates to the technical field of motors, and provides a stator punching sheet with a circumferential flow channel, a motor, a power assembly and an electric vehicle. The stator punching sheet comprises a plurality of communicating holes and a plurality of circumferential flow channels. Along the axial direction of the stator, each communication hole and each circumferential flow channel penetrate through the stator punching sheet. Along the circumferential direction of the stator, the plurality of communicating holes are arranged at intervals, the plurality of circumferential flow channels are arranged at intervals, and each circumferential flow channel is communicated with at least two communicating holes; along the radial direction of the stator, the distance between the center of the circumferential flow channel and the center of the stator punching sheet is greater than the distance between the center of the communication hole and the center of the stator punching sheet. The cooling working