Rotor assembly, motor and electric drive system

• Main Authors: LIU RUYI, ZHANG YUJIE, ZHANG GE, ZHANG WEIGANG
• Format: Patent
• Language: Chinese; English
• Published: 26.09.2023
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION

The utility model relates to a rotor assembly, a motor and an electric drive system. The rotor assembly comprises a rotor shaft; the rotor iron core comprises at least two laminations which are the same in structure and are sequentially arranged along the axis of the rotor shaft, and each lamination comprises a central hole; a plurality of permanent magnet mounting parts; the number of the positioning holes is the same as that of the permanent magnet mounting parts, the centers of the multiple positioning holes are located on the same circle with the circle center on the axis of the rotor shaft, and the central angles between each positioning hole and the adjacent positioning holes on the two sides are different; for each lamination of the rotor core, one positioning hole and one positioning hole in all other laminations are located on the same straight line, and the permanent magnet mounting part of at least one lamination does not coincide with the permanent magnet mounting parts of other laminations in the