公开(公告)号：US20240154475A1

公开(公告)日：2024-05-09

申请号：US18490431

申请日：2023-10-19

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Kento OMURA ,  Shunsuke KAWASAKI ,  Kenta CHIMATA

IPC分类号： H02K1/2706 ,  H02K15/03

CPC分类号： H02K1/2706 ,  H02K15/03 ,  H02K2201/06

摘要： A rotor for an electric motor may include a shaft extending along a rotation axis of the electric motor and a rotor core comprising a plurality of core blocks fixed to the shaft and arranged along the rotation axis. The plurality of core blocks may include a first core block and a second core block that are oriented differently from each other in a circumferential direction about the rotation axis. Each of the plurality of core blocks may include an outer surface extending along the circumferential direction, a center hole through which the shaft passes, and an outer groove defined in the outer surface. An inner surface of the center hole may be in continuous contact in the circumferential direction with an outer surface of the shaft over an entire circumference thereof.

公开(公告)号：US20240128845A1

公开(公告)日：2024-04-18

申请号：US17975957

申请日：2022-10-28

申请人： GM Global Technology Operations LLC

发明人： Jian Yao ,  Chengwu Duan ,  Denghao Fan ,  Vincent Fedida ,  Thomas W. Nehl

IPC分类号： H02K29/03 ,  B60L50/60 ,  H02K21/24

CPC分类号： H02K29/03 ,  B60L50/60 ,  H02K21/24 ,  H02K2201/06

摘要： A member for an axial flux electric machine, in accordance with a non-limiting example, includes a support member having a first surface, a second surface opposite the first surface, an outer annular edge, and an inner annular edge that defines an opening having a center point. A plurality of members is mounted on one of the first surface and the second surface. Each of the plurality of members has a centerline that passes through the outer annular edge and the inner annular edge without passing through the center point creating a torque ripple reducing asymmetry in the member.

公开(公告)号：US20240079919A1

公开(公告)日：2024-03-07

申请号：US18507396

申请日：2023-11-13

申请人： DENSO CORPORATION

发明人： Fumiya KAWATE ,  Ritsuro HIRAMATSU ,  Toshihiro UCHIDA

IPC分类号： H02K1/276

CPC分类号： H02K1/276 ,  H02K2201/06 ,  H02K2213/03

摘要： A rotor includes a plurality of rotor units disposed side by side in an axial direction. The plurality of rotor units each include a rotor core, a plurality of permanent magnets, a plurality of magnetic pole sections and a plurality of magnetic pole bordering sections. At least one of the rotor units has a displacement portion in an outer circumferential surface of the rotor core. The displacement portion is displaced radially inward from respective magnetic pole centers of a circumferentially adjacent pair of the magnetic pole sections toward the magnetic pole bordering section between the pair of the magnetic pole sections. The displacement portion is disposed corresponding to at least one of the magnetic pole bordering sections. The magnetic pole centers of at least one of the rotor units are offset in the circumferential direction with respect to the magnetic pole centers of another of the rotor units.

公开(公告)号：US20230344289A1

公开(公告)日：2023-10-26

申请号：US17923096

申请日：2021-04-28

申请人： Schaeffler Technologies AG & Co. KG

发明人： Bernhard LINZ ,  Philip WURZBERGER

IPC分类号： H02K1/276

CPC分类号： H02K1/276 ,  H02K2201/06

摘要： A laminated core set for a rotor, having at least one first laminated core and at least one second laminated core, each having internal toothing for fastening to a rotor shaft and forming a magnet carrier. The magnet carriers have recesses for receiving magnets. A circumferential orientation is a relative position between the recesses and the internal toothing of a laminated core and the circumferential orientation of the first laminated core is different from the circumferential orientation of the second laminated core. A rotor for an electric machine is provided having such a laminated core set and a rotor shaft to which the laminated core set is attached such that the recesses of axially adjacent laminated cores are arranged rotated by a predetermined angular offset.

公开(公告)号：US20180320691A1

公开(公告)日：2018-11-08

申请号：US15776130

申请日：2016-11-16

申请人： Grundfos Holding A/S

发明人： Flemming Buus Bendixen ,  Alan Ivo Sogaard Sorensen

IPC分类号： F04D13/02 ,  F04D7/06 ,  F04D13/06 ,  H02K49/10

CPC分类号： F04D13/027 ,  F04D7/06 ,  F04D13/06 ,  H02K49/106 ,  H02K2201/06

摘要： The present invention relates to a pump unit (300), with at least one impeller, comprising a coupling, wherein the coupling is mechanically connected to the at least one impeller via an inner rotor and where an outer rotor is connected to an electrical machine arranged to produce a rotational torque, said pump being arranged to circulate a hot fluid by the impeller. The coupling includes an outer rotor including a plurality of permanent magnets (101,201) arranged to form a plurality of magnetic poles (105, 205), and an inner rotor (110, 210), whereby the outer rotor and the inner rotor are located coaxially to one another around an axis (130, 230) and spaced apart from one another by an air gap (150,250). A rotor can (330) is arranged in the air gap (250, 150) between the inner rotor and the outer rotor, so as to make a dividing section between the inner and outer rotor. Each of the plurality of magnetic poles comprises at least a section with a radial magnetic direction in respect of the axis (130, 230) and at least a section with a magnetic direction angled between a radial direction and a tangential direction in respect of the axis (130, 230), wherein the combined length of the sides of the plurality of permanent magnets cover less than 75% of the circumference of the cylindrical structure. The outer rotor has a cylindrical structure (120, 220) surrounding the plurality of magnetic poles (105, 205), and the cylindrical structure is made of a magnetic susceptible material for conducting a magnetic flux between the plurality of magnetic poles (105, 205) The inner rotor (110, 210) is made of a magnetic susceptible material and free from permanent magnetic material, wherein the inner rotor is formed with multiple radial projections (111, 211) acting as salient inner rotor poles distributed around the axis (130, 230) of the inner rotor. The invention also relates to a coupling with the above mentioned coupling features.

公开(公告)号：US20180309333A1

公开(公告)日：2018-10-25

申请号：US16022283

申请日：2018-06-28

申请人： NTN CORPORATION

发明人： Yusuke MAKINO

IPC分类号： H02K1/27

CPC分类号： H02K1/276 ,  B60L15/00 ,  H02K1/22 ,  H02K1/27 ,  H02K1/2706 ,  H02K21/14 ,  H02K29/03 ,  H02K2201/06 ,  H02K2213/03 ,  Y02T10/641

摘要： The rotating electric motor includes a stator including a stator coil and a stator core, and a rotor located at an inner peripheral side of the stator core and rotatable relative to the stator. The rotor includes a rotor core provided at an outer periphery of a rotor rotation shaft via a core support portion. The rotor core has a plurality of magnetic poles in which a plurality of sets of permanent magnets are provided along a circumferential direction. The rotor core includes a plurality of rotor core divided bodies that are aligned in an axial direction, concentrically arranged, and shifted in phase from each other by a determined angle. A pair of grooves are provided on an outer peripheral portion of each rotor core divided body to be spaced apart from each other in the circumferential direction with a center of each magnetic pole.

公开(公告)号：US20180183285A1

公开(公告)日：2018-06-28

申请号：US15759281

申请日：2016-09-27

申请人： DAIKIN INDUSTRIES, LTD.

发明人： Yoshinari ASANO ,  Yoshiki YASUDA ,  Masaki HIRANO

IPC分类号： H02K1/27 ,  H02K21/14 ,  H02K15/03 ,  H02K29/03

CPC分类号： H02K1/27 ,  H02K1/2766 ,  H02K15/03 ,  H02K21/14 ,  H02K29/03 ,  H02K2201/06 ,  H02K2213/03

摘要： A rotor includes a rotor core and a bond magnet. The rotor core has core blocks and a partition core sandwiched between the core blocks in an axial direction. Magnet holes pass through the core blocks and the partition core in the axial direction, respectively, and the magnet hole is communicated with the magnet holes. Positions of the magnet holes in a circumferential direction are deviated from each other. The bond magnet fills the magnet holes.

公开(公告)号：US09966806B2

公开(公告)日：2018-05-08

申请号：US15033114

申请日：2014-09-18

申请人： Mun Seop So

发明人： Mun Seop So

IPC分类号： H02K1/17 ,  H02K1/02 ,  H02K1/27 ,  H02K3/04 ,  H02K21/22 ,  H02K7/18

CPC分类号： H02K1/17 ,  H02K1/02 ,  H02K1/278 ,  H02K1/2786 ,  H02K3/04 ,  H02K7/1861 ,  H02K21/22 ,  H02K2201/06

摘要： The present invention provides an electricity generation device using a neodymium magnet having a helical structure that generates more electricity from the same torque during the same amount of time than common electricity generation devices using magnets, by helically arranging neodymium magnets, which has magnetic force significantly larger than common magnets, outside a unit coil, and that has improved performance of generating electricity by transmitting magnetic fields in vortexes to the unit coil. The electricity generation device using a neodymium magnet having a helical structure includes a first neodymium magnet, a second neodymium magnet, a third neodymium magnet, a first side magnet, a second magnet, a rod, and a unit coil. The electricity generation device using a neodymium magnet having a helical structure further includes a case, a first cover, a second cover, a cradle, a side gear, a first gear, and a handle.

公开(公告)号：US20180062459A1

公开(公告)日：2018-03-01

申请号：US15675662

申请日：2017-08-11

申请人： Te-Feng TSAI

发明人： Te-Feng TSAI

IPC分类号： H02K1/17 ,  H02K1/06

CPC分类号： H02K1/17 ,  H02K1/06 ,  H02K53/00 ,  H02K2201/06

摘要： A magnet-assisted power generation module includes a power generation assembly and a magnet-assisted driving assembly. The power generation assembly includes a stator and a rotor being rotatable with respect to the stator and thus power is generated. The magnet-assisted driving assembly includes a hollow outer permanent magnetic component and an inner permanent magnetic component. The outer permanent magnetic component is fixed on one side of the power generation assembly. The inner permanent magnetic component is rotatably mounted in the outer permanent magnetic component connected to a shaft of the rotor. When external forces are transmitted to the rotor, repulsion forces are generated between the inner permanent magnetic component and the outer permanent magnetic component and the repulsion forces are deflected from a center point of the shaft of the rotor. Thus, loading of the rotor is lessened so that the rotor may be rotated by smaller external forces.

公开(公告)号：US20180054149A1

公开(公告)日：2018-02-22

申请号：US15678800

申请日：2017-08-16

申请人： FANUC CORPORATION

发明人： Tatsuya Senoo

IPC分类号： H02P25/20 ,  H02K17/14

CPC分类号： H02P25/20 ,  H02K1/27 ,  H02K1/28 ,  H02K15/02 ,  H02K17/14 ,  H02K21/16 ,  H02K2201/06 ,  H02K2213/03

摘要： A synchronous motor is driven by three phase alternate current. The rotor core includes a laminated body configured by laminating plate members made of electrical steel sheet. Each plate member is formed in a substantially circular shape in a plan view and formed with projections along an outer circumference thereof.The number of slots of the stator is 3xy when variable x is a natural number and variable y is a positive odd number. The number of poles of the rotor is (3y+1)x or (3y−1)x. The number of projections of each plate member is a common measure of (3y+1)x and (3y−1)x. The laminated body has a structure in which the plate members are laminated so that the projections are shifted relative to one another.