Permanent magnet DC brushless motor for pure electric vehicle

The invention discloses a permanent magnet DC brushless motor for a pure electric vehicle, belonging to the technical field of permanent magnet DC current motor. The permanent magnet DC brushless motor for a pure electric vehicle comprises a stator, a rotor and a motor shaft; the stator comprises stator iron cores which are uniformly and internally distributed on the inner side of the stator; the two ends of the stator iron core are provided with insulation skeletons; the insulation skeleton is provided with a circuit board assembly; the rotor comprises a rotor iron core and a plurality of permanent magnets, the number of which is even; when a radial type rotor is adopted, the shapes of the permanent magnets are characterized in that: the permanent magnet is of a strip shape with the inner side and the outer side being arc, the permanent magnet is of a shuttle shape with double faces being projected and two sides being flushed and the permanent magnet is of a strip shape with an arc-shaped outer edge and single-face projected. The permanent magnet DC brushless motor for the pure electric vehicle can improve the working point of the permanent magnet, and enhances the demagnetization resistance capability and overloading capability of the motor. When the tangential type rotor is adopted, the internal of the rotor iron core which is close to the motor shaft is provided with a sector-shaped groove; and a conductive magnetic sliding block is arranged inside the sector-shaped groove. The adoption of the conductive magnetic sliding block can reduce the counter electromotive force of the motor, improves the highest rotation speed of the motor, and satisfies the low load of the pure electric vehicle and the special needs for high speed.