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公开(公告)号：US20230133593A1
公开(公告)日：2023-05-04
申请号：US17711806
申请日：2022-04-01
发明人： Graham CHEN , Chih-Tsung HSU , Hsin-Hsien WU , Chin-Hui PAN , Yu-Chuan HUANG
摘要： A grounding structure for a motor stator includes a silicon steel sheet unit, and upper and lower insulating frames clamping the silicon steel sheet unit therebetween. The grounding structure further includes a conductive member and a circuit board. The conductive member is clamped between the silicon steel sheet unit and the lower insulating frame, and protruding from a lower end of the lower insulating frame. The circuit board is disposed at a lower side of the lower insulating frame, and includes a negative contact that is connected to a lower edge of the conductive member.
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公开(公告)号：US20230039344A1
公开(公告)日：2023-02-09
申请号：US17444734
申请日：2021-08-09
发明人： Peter Schenk , Mathew Hill , David Loder
摘要： A rotor assembly includes a rotor core having an axial length and configured to rotate about a longitudinal axis and at least one permanent magnet disposed about a radially outer surface of the rotor core. The rotor assembly further includes an electrical insulator disposed between the radially outer surface of the rotor core and the at least one permanent magnet and configured to disrupt an electrical conduction path along the axial length of the rotor core.
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公开(公告)号：US20220302779A1
公开(公告)日：2022-09-22
申请号：US17208482
申请日：2021-03-22
摘要： A rotor assembly includes a plurality of segmented magnets on an outer surface of a rotor core, a metallic layer on the outer surface of the plurality of segmented magnets, and a plurality of segmented metallic bands on the outer surface of the metallic layer. The plurality of segmented metallic bands is configured to secure the plurality of segmented magnets to the outer surface of the rotor core, and each band of the plurality of metallic bands has an axial length less than an axial length of the rotor.
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公开(公告)号：US20220271635A1
公开(公告)日：2022-08-25
申请号：US17685872
申请日：2022-03-03
申请人： ElringKlinger AG
发明人： Magnus Reichert , Michael Schaich , Florian Haßler , Fabienne Anhorn , Wojtek Kolasinski , Peter Braun
摘要： To provide a method by means of which stacks of metal sheets can be produced in an easy and efficient way, it is proposed that the method comprises the following: coating one or more metal sheets with a bonding substance; bonding multiple metal sheets to form a sheet-metal laminate by a first activation of the bonding substance; cutting up the sheet-metal laminate to produce multiple sheet-metal laminate units and/or cutting out multiple sheet-metal laminate units from the sheet-metal laminate; and bonding the multiple sheet-metal laminate units to form a stack of metal sheets by a second activation of the bonding substance, wherein the bonding substance comprises a resin material and an elastomer material.
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公开(公告)号：US20220239202A1
公开(公告)日：2022-07-28
申请号：US17611781
申请日：2020-05-15
摘要： A method for manufacturing a motor core includes a step of manufacturing a motor core by performing melt-cutting on an electrical steel sheet using heat input from a surface, the electrical steel sheet having an average thermal conductivity in depth positions from the surface to one-third depth of a sheet thickness lower than a thermal conductivity in a middle position in a sheet thickness direction by 30% or greater.
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公开(公告)号：US20220200364A1
公开(公告)日：2022-06-23
申请号：US17433727
申请日：2019-03-04
发明人： Hiroki ASO , Takaya SHIMOKAWA , Ryogo TAKAHASHI , Kazuma NOMOTO
摘要： A motor includes an annular stator core having a plurality of core segments connected via connecting portions in a circumferential direction about an axis, a cover portion covering the stator core and having a core-surrounding portion surrounding the stator core from an outer side in a radial direction about the axis, and a rotor having a rotor core provided on an inner side of the stator core in the radial direction and a magnet attached to the rotor core. The magnet forms a first magnetic pole, and a part of the rotor core forms a second magnetic pole. A minimum distance R1 in the radial direction from the axis to an outer circumference of the core-surrounding portion and a minimum distance R2 in the radial direction from the axis to an outer circumference of the stator core satisfy R1≥1.15×R2.
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公开(公告)号：US11362552B2
公开(公告)日：2022-06-14
申请号：US16154825
申请日：2018-10-09
发明人： Leyi Zhu , Feng Liang , Michael W. Degner
摘要： An electric machine rotor including a first stamped rotor lamination and a first stamped sheet of a material different than the first stamped rotor lamination is provided. The first stamped rotor lamination may define a pair of magnet pockets. The first stamped sheet may be coplanar with and scarf jointed to the first stamped rotor lamination to define a center bridge between the magnet pockets that has a magnetic permeability less than, and a mechanical strength greater than, the first stamped rotor lamination. The rotor may further include a second stamped sheet of a material different than the first stamped rotor lamination coplanar with and scarf jointed to the first stamped rotor lamination to define a top bridge adjacent to one of the magnet pockets at a perimeter of the rotor that has a magnetic permeability less than, and a mechanical strength greater than, the first stamped rotor lamination.
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公开(公告)号：US20220173630A1
公开(公告)日：2022-06-02
申请号：US17673938
申请日：2022-02-17
发明人： Weijun Yin , Anil Raj Duggal
摘要： An electric machine includes a rotor assembly having a rotor core that extends in an axial direction and a stator assembly surrounding and coaxial with the rotor assembly. The stator assembly includes a stator core having slots extending in a radial direction into an inner surface of the stator core and extending axially from a first end surface to a second end surface of the stator core. The stator assembly includes stator coil windings disposed within the respective slots of the stator core and a first electrically insulating conformal coating disposed between the stator core and the stator coil windings. The conformal coating includes a polymer matrix impregnated with an effective amount of thermally conductive ceramic materials, above a percolation threshold, that form continuous thermal pathways across a thickness of the first coating.
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公开(公告)号：US11128187B2
公开(公告)日：2021-09-21
申请号：US16494997
申请日：2018-03-20
申请人： WHYLOT SAS
发明人： Romain Ravaud , Loic Mayeur
IPC分类号： H02K1/27 , H02K5/04 , H02K1/12 , H02K15/03 , H02K21/12 , H02K3/46 , H02K1/02 , H02K21/24 , H02K41/03 , H01F7/02 , H01F41/02 , H02K1/04 , H02K1/28 , H02K15/12 , H02K16/04 , H02K7/00
摘要： A rotor for a motor or for a radial flux electromagnetic generator having a cylindrical support housing a plurality of magnets (4), characterised in that the cylindrical support comprises a cylindrical mesh (5a) having mesh elements each defining a recess (5) for a respective individual magnet (4), each recess (5) having internal dimensions that are just sufficient to allow the introduction of a individual magnet (4) in its interior while leaving a space between the recess (5) and the individual magnet (4) filled by a fibre-reinforced resin, the mesh (5a) being made from a fibre-reinforced insulating material, the rotor comprising a non-conductive composite layer coating the individual magnets (4) and the mesh (5a).
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公开(公告)号：US11056942B2
公开(公告)日：2021-07-06
申请号：US17082930
申请日：2020-10-28
IPC分类号： H02K1/32 , H02K9/22 , H02K3/44 , H02K3/30 , H02K3/32 , H02K1/14 , H02K3/18 , H02K5/15 , H02K1/27 , H02K1/04 , H02K1/18 , H02K1/28 , H02K5/08 , H02K5/18 , H02K7/00 , H02K9/06 , H02K9/08 , H02K9/19 , H02K11/25 , H02K1/12 , H02K5/24 , H02K7/08 , H02K15/10 , H02K15/14 , H02K5/06
摘要： An electric machine rotor including a shaft, a rotor back assembly surrounding a portion of the shaft, and a plurality of permanent magnets distributed at equal radial distance from the shaft around the rotor back assembly. The electric machine rotor also includes a gap between two adjacent permanent magnets and a thermally conductive material filing the gap. The thermally conductive material is in contact with the rotor back assembly between the two adjacent permanent magnets. The electric machine rotor also includes a heat transfer structure in thermal communication with the thermally conductive material, extending beyond an outer surface of the thermally conductive material to transfer heat away from the electric machine rotor.
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