Electric motor
    3.
    发明授权

    公开(公告)号:US12081067B2

    公开(公告)日:2024-09-03

    申请号:US17052456

    申请日:2020-06-02

    IPC分类号: H02K1/14 H02K3/34 H02K3/52

    CPC分类号: H02K1/148 H02K3/345 H02K3/522

    摘要: A stator includes insulation including a back insulation portion covering a back stator portion, a first tooth portion covering a first tooth, a second tooth portion covering a second tooth. A first flange portion has a first face that is in facing relationship with the back insulation portion. A second flange portion has a second face that is in facing relationship with the back insulation portion. The first face and the second face together substantially defining a boundary plane, such that a cross-sectional slot area is defined between the back insulation portion, the first tooth portion, the second tooth portion, and the boundary plane. A plurality of conductive wires are arranged in the cross-sectional slot area, the wires defining a cross-sectional winding area within the cross-sectional slot area. A ratio of the cross-sectional winding area to the cross-sectional slot area is greater than or equal to 0.45.

    Axial gap motor
    4.
    发明授权

    公开(公告)号:US12074489B2

    公开(公告)日:2024-08-27

    申请号:US17859483

    申请日:2022-07-07

    摘要: An axial gap motor having a rotor and a stator core. A plurality of pressed powder teeth extends in a radial direction of the stator core and each has a trapezoidal shape in which a circumferential length of a pressed-powder-tooth-radial-direction-outer-end portion is larger than a circumferential length of a pressed-powder-tooth-radial-direction-inner-end portion. The rotor includes a plurality of field magnets, each configured such that a circumferential length of a magnet-radial-direction-inner-end portion is greater than or equal to a circumferential length of a magnet-radial-direction-outer-end portion. When the rotor and the stator core rotate relative to each other about a rotation axis, a part of the field magnets first overlaps with pressed-powder-tooth-radial-direction-inner portions of pressed powder teeth, and while the field magnets are located at a q-axis position with respect to the pressed powder teeth, adjacent ones of the field magnets individually overlap with one pressed powder tooth.

    Stator for rotating electric machine with overlapping hairpin coils

    公开(公告)号:US12068636B2

    公开(公告)日:2024-08-20

    申请号:US17423025

    申请日:2020-07-24

    摘要: A stator for a rotating electric machine according to one implementation of the present disclosure includes a stator core having a plurality of slots, and a stator coil formed by electrically connecting a plurality of hairpins inserted into the slots in a preset pattern, wherein the stator coil includes voltage distribution hairpins disposed in a voltage distribution section preset from an end to which power is to be input, wherein the voltage distribution hairpins include a plurality of first and protruding parts protruding from the plurality of slots and extending away from the stator core, wherein one of the plurality of first protruding parts and one of the plurality of second protruding parts are electrically coupled to form a coil pair, and wherein an insulating member is disposed between the first protruding parts and the second protruding parts to insulate between the first and second protruding parts.

    MONITORING SYSTEM FOR ELECTRICAL MOTORS INSULATION

    公开(公告)号:US20240275244A1

    公开(公告)日:2024-08-15

    申请号:US18168949

    申请日:2023-02-14

    摘要: A system includes an electric motor. The electric motor includes one or more windings wrapped around a magnetic core within one or more stator slots of the electric motor, where each of the one or more windings comprises two or more coils. The system further includes a groundwall insulation layer wrapped around the one two or more coils, and a sensor coupled to the one or more windings, where the sensor is a resistance temperature detector (RTD) configured to measure a temperature of the one or more windings at a 70% loading condition of the electric motor. The system also includes a controller connected to the sensor and a computer processor coupled to the controller.

    SLOT LINER AND ROTATING ELECTRIC MACHINE
    7.
    发明公开

    公开(公告)号:US20240266898A1

    公开(公告)日:2024-08-08

    申请号:US18693696

    申请日:2022-06-13

    申请人: NIKKISO CO., LTD.

    IPC分类号: H02K3/34

    CPC分类号: H02K3/345 H02K3/34

    摘要: The slot liner (13) includes a laminated insulation sheet (131) having a length (L1) longer than a length (L2) of a stator core in an axial direction and a pair of reinforcing sheets (135, 136). The laminated insulation sheet includes an outer insulation sheet (134) in contact with an inner surface (112d) of the slot and an inner insulation sheet (132) in contact with a conductor. Each of reinforcing sheets is folded back in the axial direction in such a way as to cover an end surface (134a, 134b) of the outer insulation sheet and includes a folded portion (135e, 136e) that covers the end surface of the outer insulation sheet, a first end portion (135f1, 136f1) disposed between the inner surface of the slot and the outer insulation sheet, and a second end portion (135g, 136g) disposed between the outer and inner insulation sheets.

    INSULATOR, STATOR AND ELECTRIC MOTOR
    8.
    发明公开

    公开(公告)号:US20240235309A9

    公开(公告)日:2024-07-11

    申请号:US18009738

    申请日:2022-03-17

    IPC分类号: H02K3/34 H02K1/16 H02K1/18

    CPC分类号: H02K3/345 H02K1/16 H02K1/18

    摘要: An insulator attached to a core body in an annular shape and multiple teeth protruding from the core body along a radial direction for insulating the teeth and a coil wound around the teeth includes: a tooth end surface covering part covering an axial end surface of the tooth. The tooth end surface covering part includes: an inclined part provided on a front surface of the tooth end surface covering part on a side opposite to the tooth and inclined such that its height from the axial end surface of the tooth gradually changes along the radial direction; and an inclined part parallel part and a tooth parallel part provided on a back surface of the tooth end surface covering part on the tooth side and concave in a direction away from the axial end surface of the tooth.

    STATOR
    9.
    发明公开
    STATOR 审中-公开

    公开(公告)号:US20240186857A1

    公开(公告)日:2024-06-06

    申请号:US18546442

    申请日:2022-02-14

    IPC分类号: H02K3/34 H02K1/16 H02K3/30

    CPC分类号: H02K3/345 H02K1/16 H02K3/30

    摘要: A stator includes a stator core and a coil. The stator core includes an annular yoke portion and a plurality of teeth that are annularly aligned. The plurality of teeth protrude from the yoke portion. Slots are constituted respectively by two adjacent teeth of the plurality of teeth. Insulating resin fills the slots of the stator. The coil includes a winding wire passed through the slots and wound around the teeth. The winding wire includes a core wire forming a conductive path and a covering portion covering the core wire. In each of the slots, the insulating resin completely fills a gap between an inner wall of the tooth and the covering portion.