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    MOTOR ROTOR
    3.
    发明公开
    MOTOR ROTOR 审中-公开

    公开(公告)号：EP4451519A1

    公开(公告)日：2024-10-23

    申请号：EP24170662.1

    申请日：2024-04-16

    申请人： Contemporary Amperex Intelligence Technology (Shanghai) Limited ,  Contemporary Amperex Technology Co., Limited

    发明人： GUO, Minjie ,  XIA, Ji ,  HUANG, Liren

    IPC分类号： H02K1/27 ,  H02K21/24

    摘要： The present disclosure is applicable to the technical field of motors, and provides a motor rotor, a motor, a power assembly, and an electric apparatus, wherein the electric apparatus includes a power assembly, the power assembly includes a motor, and the motor includes a motor rotor, a stator, and a rotation shaft. The motor rotor includes a mounting frame and a magnet steel mounted to the mounting frame. The mounting frame is provided with a limiting wall for resisting a centrifugal movement of the magnet steel in a radial direction. By providing the mounting frame with a limiting wall for resisting the centrifugal movement of the magnet steel in the radial direction, on the basis that the magnet steel is mounted to the mounting frame, the mounting frame may also resist the centrifugal movement of the magnet steel in the radial direction by means of the limiting wall. That is, the limiting wall may share the stress of the mounting frame due to the centrifugal movement of the magnet steel in the radial direction, so that the mounting frame may bear a greater stress, so that the mounting frame and the magnet steel have a higher reliability of combination, and the problem that the magnet steel is throw out when the motor rotor rotates can be alleviated, which helps to meet a requirement of using the motor rotor at a high rotation speed.

    MAGNETISATION AND DEMAGNETISATION OF A COMPONENT
    4.
    发明公开
    MAGNETISATION AND DEMAGNETISATION OF A COMPONENT 审中-公开

    公开(公告)号：EP4451297A1

    公开(公告)日：2024-10-23

    申请号：EP24162000.4

    申请日：2024-03-07

    申请人： Rolls-Royce plc

    发明人： Lambourne, Alexis ,  Riley, Christopher D

    IPC分类号： H01F13/00 ,  H02K1/27 ,  H02K15/00 ,  H02K15/03

    摘要： A method of magnetising or demagnetising an annular component 200 for a rotary machine is disclosed, the annular component comprising an alternating arrangement of radial elements and angular elements for forming a Halbach array. A magnetizer 310 is caused to induce magnetic flux in a primary set of elements of the annular component comprising a primary radial element 232 and an adjacent primary angular element 222. A shield element 400 shields a secondary angular element 226 of the annular component from magnetic flux from the magnetizer. A flux arrangement for performing a magnetising or demagnetising method is also disclosed, and a flux assembly for such a flux arrangement.

    ROTOR AND ELECTRIC MOTOR
    6.
    发明公开
    ROTOR AND ELECTRIC MOTOR 审中-实审

    公开(公告)号：EP4412038A1

    公开(公告)日：2024-08-07

    申请号：EP21959349.8

    申请日：2021-09-29

    申请人： Aichi Steel Corporation

    发明人： TSUGE, Yuki ,  FUJIMAKI, Tadashi

    IPC分类号： H02K1/27

    CPC分类号： H02K1/27

    摘要： The present invention provides a rotor comprising: a main body composed of a soft magnetic material; and a permanent magnet provided inside or outside the main body. The permanent magnet is a bonded magnet comprising a magnet powder and a binder resin that binds the magnet powder. The bonded magnet includes 87-96 mass% of the magnet powder relative to the bonded magnet as a whole. The magnet powder includes coarse powder having an average particle diameter of 40-200 µm and fine powder having an average particle diameter of 1-10 µm. The coarse powder has a mass ratio of 60-90 mass% to a total of the coarse powder and the fine powder. The binder resin includes a thermosetting resin. The bonded magnet has a resin layer with an average thickness of 0.1-5 µm, for example, in a vicinity of a joint interface with the main body. The bonded magnet can be firmly joined to the main body, and the rotor can therefore rotate at high speed. The main body is, for example, a rotor core of an IPM motor.

    ROTOR OF DISC-TYPE ELECTRIC MOTOR, AND DISC-TYPE ELECTRIC MOTOR AND ELECTRIC DEVICE
    7.
    发明公开
    ROTOR OF DISC-TYPE ELECTRIC MOTOR, AND DISC-TYPE ELECTRIC MOTOR AND ELECTRIC DEVICE 审中-实审

    公开(公告)号：EP4407839A1

    公开(公告)日：2024-07-31

    申请号：EP22958363.8

    申请日：2022-09-13

    申请人： Contemporary Amperex Intelligence Technology (Shanghai) Limited

    发明人： WU, Kai

    IPC分类号： H02K1/27

    CPC分类号： H02K1/27

    摘要： The embodiments of the present disclosure provide a rotor and a disc motor. The rotor is divided into a plurality of magnetic pole units in a circumferential direction of the rotor, and each of the plurality of magnetic pole units includes at least two magnetic bodies. The magnetic bodies of each of the plurality of magnetic pole units have a same magnetization direction and the magnetic bodies of any two adjacent magnetic pole units have opposite magnetization directions. The embodiments of the present disclosure increase the number of magnetic barriers in the magnetic pole unit, which is beneficial to reducing the armature reaction and iron loss of the stator. At the same time, the magnetization effect of the rotor is improved, ultimately the torque density and efficiency of the motor is improved.