The invention provides a motor, a power assembly and an electric vehicle. A rotor of the motor comprises a plurality of rotor iron cores, each rotor iron core comprises a plurality of rotor punching sheets, and the plurality of rotor punching sheets in each rotor iron core are sequentially and adjacently arranged along the axial direction of the motor. Each rotor core comprises a motor shaft hole and a plurality of magnetic steel holes, and the plurality of magnetic steel holes in each rotor core are arranged around one motor shaft hole. Each magnetic steel hole comprises two side hole walls, and one or more pieces of magnetic steel contained in each magnetic steel hole are arranged between the two side hole walls. One side surface of one or more magnetic steels faces one side hole wall, and the other side surface of one or more magnetic steels faces the other side hole wall. At least one magnetic steel hole further comprises a plurality of protrusions, the protrusions in the same magnetic steel hole are distributed on the hole wall of the same side and used for making contact with the surface of the same side of one or more pieces of magnetic steel, and the protrusions in the same magnetic steel hole are distributed on the rotor punching sheets arranged at intervals in the axial direction of the motor. The eddy current loss of the rotor core is low, and the motor efficiency is high.
本申请提供了一种电机、动力总成及电动车辆。电机的转子包括多个转子铁芯,每个转子铁芯包括多个转子冲片,每个转子铁芯中多个转子冲片沿电机轴向依次相邻排列。每个转子铁芯包括一个电机轴孔和多个磁钢孔,每个转子铁芯中多个磁钢孔环绕一个电机轴孔排列。每个磁钢孔包括两侧孔壁,每个磁钢孔容纳的一个或多个磁钢排列于两侧孔壁之间。一个或多个磁钢的一侧表面朝向一侧孔壁,一个或多个磁钢的另一侧表面朝向另一侧孔壁。至少一个磁钢孔还包括多个凸起,同一个磁钢孔中多个凸起分布于同一侧孔壁并用于接触一个或多个磁钢的同一侧表面,同一个磁钢孔中多个凸起分布于沿电机轴向间隔排列的多个转子冲片。转子铁芯的涡流损耗较低,电机效率较高。
Motor, power assembly and electric vehicle
电机、动力总成及电动车辆
2025-01-03
Patent
Electronic Resource
Chinese
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