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    MOTOR SHAFT CURRENT SUPPRESSION MECHANISM AND ELECTRIC DRIVE SYSTEM
    4.
    发明公开
    MOTOR SHAFT CURRENT SUPPRESSION MECHANISM AND ELECTRIC DRIVE SYSTEM 审中-公开

    公开(公告)号：EP4447293A1

    公开(公告)日：2024-10-16

    申请号：EP23861654.4

    申请日：2023-08-22

    申请人： Jing-Jin Electric Technologies Co., Ltd

    发明人： HAO, Ziqiang ,  ZHANG, Kaihe ,  LIU, Xia

    IPC分类号： H02K11/00 ,  H02K11/40 ,  H02H9/02

    摘要： A motor shaft current suppression mechanism and an electric drive system are disclosed. The motor shaft current suppression mechanism is applied to the electric drive system. The electric drive system comprises a motor controller (110) and a motor (120). The suppression mechanism (400) comprises: a first capacitor (410) for connecting each phase line of three phase output in the motor controller (110) to a housing of the motor controller (110) itself; and/or, a second capacitor (420) for connecting each phase line of three phase output in the motor (120) to a housing of the motor (120) itself. The present disclosure can suppress the shaft current on the bearings and protect the bearings of the motor (120). The motor shaft current suppression mechanism of the present disclosure can be used in electric drive systems.

    MOTOR DEVICE AND MOTOR CONTROL DEVICE
    10.
    发明公开
    MOTOR DEVICE AND MOTOR CONTROL DEVICE 审中-公开

    公开(公告)号：EP4439942A1

    公开(公告)日：2024-10-02

    申请号：EP21965591.7

    申请日：2021-11-24

    申请人： JTEKT Corporation

    发明人： SATO, Yuto

    IPC分类号： H02K11/33

    CPC分类号： H02K11/33

    摘要： A motor device (11) includes a motor (12) and a motor control device (13). The motor control device includes a board (41) attached to an end portion of the motor, and a cover (42) attached to the end portion of the motor so as to cover the board. The motor has a motor body (20) and a connector assembly (25) that is disposed on a side of the motor body. The board has an extending portion (41B) that extends to the side of the motor body so as to overlay the connector assembly. The extending portion is located between an end wall of the cover and the connector assembly, and also has terminal connecting portions (53A, 54A, 53B, 54B) to which terminals (25D1, 25D2, 25E1, 25E2), held by the connector assembly, are connected. The cover has a first projecting portion (42A) that projects from an inner face of the end wall thereof toward the board. The first projecting portion comes into contact with a region of the board adjacent to the terminal connecting portions before the terminal comes into contact with the end wall of the cover, when the end wall of the cover is deflected in a direction closer the board.