Three-phase line mounting structure for pure electric car motor

The invention relates to a three-phase line mounting structure for a pure electric car motor. The three-phase line mounting structure includes a transition plate. Three threaded holes are evenly formed in the surface of the transition plate in a linear shape. PG waterproof joints are provided with through holes allowing three-phase lines to penetrate through. External threads are machined at one end of each PG waterproof joint and used for being matched with the corresponding threaded hole. Compared with the prior art, the three-phase line mounting structure is low in cost, easy to machine and manufacture, flexible and convenient to mount, small in required operation space and capable of achieving a higher protection grade.