Power assembly oil direct cooling adapter, power assembly and electric vehicle

The invention provides a power assembly oil liquid direct cooling adapter, a power assembly and an electric vehicle, the adapter comprises a wrapping shell and a conductor which are integrally formed, the wrapping shell is used for wrapping at least part of the conductor, the two ends of the conductor are used for being electrically connected with a motor controller and a motor winding respectively, the wrapping shell internally comprises a cooling cavity, and the cooling cavity is communicated with the cooling cavity. The cooling cavity is used for containing a cooling medium and communicating with an external oil duct, the cooling medium circulates between the cooling cavity and the external oil duct, at least part of the surface of the conductor is exposed in the cooling cavity and used for making contact with the cooling medium in the cooling cavity, and the cooling medium is used for cooling the conductor. According to the invention, the conductor between the motor controller and the motor winding is in