The invention provides a motor, an electric power steering system and a vehicle, the motor comprises a stator iron core, a rotor iron core, a rotating shaft and a magnetic part, the stator iron core is provided with a rotor cavity, the rotor iron core is located in the rotor cavity and can rotate relative to the stator iron core, the rotor iron core is provided with an axial through shaft hole, and the magnetic part is located in the rotor cavity. One part of the rotating shaft extends into the shaft hole and is matched with the rotor iron core, the magnetic part is arranged on the rotating shaft and is positioned on the shaft side of the rotor iron core, and the radius R1 of the rotor iron core, the outer radius R2 of the stator iron core, the axial height L1 of the rotor iron core and the distance L2 between the rotor iron core and the magnetic part meet the condition that (L2 * R2)/(L1 * R1) is more than or equal to 0.75 and less than or equal to 1.5. Therefore, the position of the magnetic piece can be ensured not to be interfered by magnetic fields generated by the stator core and the rotor core, the reading precision of the magnetic piece on parameters such as the position and the speed of the rotor core can be ensured, and the reliable operation of the motor is ensured.
本申请提供了一种电机、电动助力转向系统和车辆,电机包括定子铁芯、转子铁芯、转轴和磁性件,定子铁芯上设有转子腔,转子铁芯位于转子腔内并能够相对于定子铁芯旋转,转子铁芯上设有轴向贯穿的轴孔,转轴的一部分伸入轴孔内并与转子铁芯配合,磁性件设在转轴上并位于转子铁芯的轴侧,其中,转子铁芯的半径R1、定子铁芯的外半径R2、转子铁芯的轴向高度L1和转子铁芯与磁性件之间的距离L2满足,0.75≤(L2×R2)/(L1×R1)≤1.5,可以保证磁性件的位置不会受到定子铁芯、转子铁芯所产生的磁场的干扰,能够保证磁性件对于转子铁芯的位置、速度等参数的读取精度,确保电机的可靠运行。
Motor, electric power steering system and vehicle
电机、电动助力转向系统和车辆
2023-06-13
Patent
Electronic Resource
Chinese
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