Conducting ring, oil-cooled motor and transmission

The utility model relates to a conducting ring, an oil-cooled motor and a transmission. The conducting ring comprises a body which is a hollow cylinder and is provided with a first side wall; each protruding supporting structure comprises a connecting end and a tail end, the connecting ends and the body are integrally formed, and the tail ends extend in the axis direction of the body; each protruding supporting structure is further provided with at least one inner cavity, the inner cavities are perpendicular to the axial direction of the body, and the inner cavities extend through the body to form channels between the adjacent protruding supporting structures. And a conductive fiber bundle accommodated through the inner cavity. The conducting ring enables redundant charges generated by mechanical friction of an electric drive system to be timely grounded and led out, so that the electrocorrosion influence of the bearing is effectively reduced, and the durability of the bearing is improved. In addition, a chan