Stator assembly, driving motor, power assembly and vehicle

The invention provides a stator assembly, a driving motor, a power assembly and a vehicle, the stator assembly comprises a stator iron core, the stator iron core comprises a first end face and a second end face which are oppositely arranged along the axial direction of the stator iron core; the stator iron core further comprises a first stator oil channel and a second stator oil channel which are used for oil liquid to flow, the oil liquid in the first stator oil channel can flow in the direction from the first end face to the second end face, and the oil liquid in the second stator oil channel can flow in the direction from the second end face to the first end face. According to the stator assembly, the driving motor, the power assembly and the vehicle provided by the invention, the first stator oil duct and the second stator oil duct form the two-way crossed oil duct, and the two-way crossed oil duct can enable the temperature distribution of the cooled stator core to be uniform, so that the cooling effect