公开(公告)号：US11996231B2

公开(公告)日：2024-05-28

申请号：US17311425

申请日：2019-12-17

Applicant: NIPPON STEEL CORPORATION

Inventor： Ryu Hirayama ,  Kazutoshi Takeda

IPC: H01F41/02 ,  H01F27/245 ,  H02K1/16 ,  H02K1/18 ,  H01F27/26

CPC classification number: H01F41/0233 ,  H01F27/245 ,  H02K1/16 ,  H02K1/18 ,  H01F27/26 ,  H02K2201/09 ,  H02K2213/03

Abstract: A laminated core includes a plurality of electrical steel sheets stacked on each other, and an adhesion part which is provided between the electrical steel sheets adjacent to each other in a stacking direction and adheres the electrical steel sheets to each other, in which the electrical steel sheet include an annular core back part, and a plurality of tooth parts which extend from the core back part in a radial direction of the core back part and are disposed at intervals in a circumferential direction of the core back part, an adhesion region in which the adhesion part is provided is formed in the core back part of the electrical steel sheet, and the adhesion region extends in a direction along a magnetic flux passing through a region of the electrical steel sheet in contact with the adhesion region.

公开(公告)号：US11923130B2

公开(公告)日：2024-03-05

申请号：US17312103

申请日：2019-12-17

Applicant: NIPPON STEEL CORPORATION

Inventor： Masahito Kamikawabata ,  Ryu Hirayama ,  Kazutoshi Takeda

IPC: H02K1/18 ,  H01F27/245 ,  H01F41/02 ,  H02K1/27

CPC classification number: H01F41/0233 ,  H01F27/245 ,  H02K1/18 ,  H02K1/27 ,  H02K2201/09 ,  H02K2213/03

Abstract: A laminated core includes: a plurality of electrical steel sheets stacked in a thickness direction, wherein the electrical steel sheet includes an annular core back part and a plurality of tooth parts protruding from the core back part toward a radial direction and arranged at intervals in a circumferential direction of the core back part, and wherein among the plurality of electrical steel sheets, the tooth parts of the electrical steel sheets located at one side on the outside in a stacking direction are adhered to each other by an adhesion part provided between the tooth parts adjacent to each other in the stacking direction, the tooth parts of the electrical steel sheets located at the other side on the outside in the stacking direction are adhered to each other by an adhesion part provided between the tooth parts adjacent to each other in the stacking direction, and the tooth parts of the electrical steel sheets located at a center part in the stacking direction are not adhered to each other.

公开(公告)号：US11909278B2

公开(公告)日：2024-02-20

申请号：US18109891

申请日：2023-02-15

Applicant: Suzhou Fine-Stamping Machinery Technology Co., Ltd

Inventor： Yuan Xiang ,  Xiudong Huang ,  Renyi Yang ,  Hongbo Wang ,  Bo Yang ,  Haodong Shi ,  Bajin Wu

IPC: H02K15/02 ,  H02K5/02

CPC classification number: H02K5/02 ,  H02K2201/09

Abstract: Disclosed herein are a production apparatus of a motor laminated core and a method for producing the same, the production apparatus comprises an upper die assembly, a lower die assembly and an adhesive spraying device, the adhesive spraying device comprises an adhesive spraying plate, a first die plate and a second die plate successively from top to bottom, and channels are disposed between the plates, and respective channels communicate with first adhesive spraying openings and second adhesive spraying openings so as to coat an adhesive on a portion of a metal strip used for forming an core sheet, and after the core sheet is formed, a plurality of core sheets are cured and bonded at normal temperature in the production apparatus with the aid of a hydraulic cylinder so as to form a motor laminated core.

公开(公告)号：US20240039349A1

公开(公告)日：2024-02-01

申请号：US18450307

申请日：2023-08-15

Applicant: DENSO CORPORATION

Inventor： YUKI TAKAHASHI

IPC: H02K1/276 ,  H02K15/12 ,  H02K15/03

CPC classification number: H02K1/276 ,  H02K15/12 ,  H02K15/03 ,  H02K2213/03 ,  H02K2201/09

Abstract: There is provided a manufacturing method of a rotary electric machine, including: sintering each of a plurality of green compacts to obtain a plurality of sintered bodies; applying a grain boundary diffusion process on each sintered body by adhering an adhering material, which includes a heavy rare earth element, to at least one of a pair of planar surfaces of each sintered body, and then heating each sintered body to diffuse the heavy rare earth element into an inside of the sintered body; and forming a laminated body of a plurality of magnet segments by placing a corresponding one of the pair of planar surfaces of one of each adjacent two of the sintered bodies in contact with a corresponding one of the pair of planar surfaces of another one of the adjacent two of the sintered bodies.

公开(公告)号：US20230387739A1

公开(公告)日：2023-11-30

申请号：US18266466

申请日：2020-12-11

Applicant: WEG EQUIPAMENTOS ELÉTRICOS S.A.

Inventor： Jacques Roberth Ruthes

IPC: H02K1/28 ,  H02K15/02 ,  H02K15/12

CPC classification number: H02K1/28 ,  H02K15/02 ,  H02K15/12 ,  H02K2201/09

Abstract: The present invention relates to a rotor (100) for a rotary electric machine, in which each package of plates (300) of the rotor (100) comprises, at both ends or end sections thereof, at least one first inverted plate (311) and at least one last inverted plate (312), said plates being inverted in relation to the other plates (310) of the package of plates (300).

公开(公告)号：US20230318412A1

公开(公告)日：2023-10-05

申请号：US18128636

申请日：2023-03-30

Applicant: Persimmon Technologies Corporation

Inventor： Mark Talmer

IPC: H02K15/02 ,  H02K15/04 ,  H02K1/14 ,  H02K1/18

CPC classification number: H02K15/026 ,  H02K15/0435 ,  H02K1/148 ,  H02K1/18 ,  H02K2201/09

Abstract: A segmented stator for an electric motor comprises: a plurality of tooth segments arranged in a circular configuration, the tooth segments having body portions and front surfaces extending inward from the body portions; and wire wound on the body portions. A distance between adjacently positioned front surfaces of the tooth segments is less than a width of the wire. The wire wound on the body portions substantially fills space between adjacently positioned tooth segments.

公开(公告)号：US20230318374A1

公开(公告)日：2023-10-05

申请号：US18206272

申请日：2023-06-06

Applicant: HYUNDAI MOTOR COMPANY ,  KIA CORPORATION

Inventor： Sang Hwa Do ,  Nyeon Han Hong ,  Kyoung Bum Kim

IPC: H02K1/276 ,  H02K15/03

CPC classification number: H02K1/276 ,  H02K15/03 ,  H02K2201/09

Abstract: A method of fixing a permanent magnet in a rotor core includes: forming a magnet accommodation portion into which a permanent magnet is to be inserted and an internal hole defined in an area adjacent to one end of the magnet accommodation portion; inserting the permanent magnet into the magnet accommodation portion; performing a caulking process by inserting a bar into the internal hole; and pressing a pressing portion toward the permanent magnet using the bar. In particular, the pressing portion is provided between the internal hole and the magnet accommodation portion

公开(公告)号：US20190207446A1

公开(公告)日：2019-07-04

申请号：US15860234

申请日：2018-01-02

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Shawn H. Swales ,  Khwaja M. Rahman ,  Goro Tamai ,  Craig S. Ross

IPC: H02K1/27 ,  H02K1/28 ,  H02K15/03 ,  H02K1/24

CPC classification number: H02K1/2766 ,  H02K1/246 ,  H02K1/278 ,  H02K1/2793 ,  H02K1/28 ,  H02K7/116 ,  H02K15/03 ,  H02K16/02 ,  H02K21/028 ,  H02K2201/09 ,  H02K2213/09

Abstract: A permanent magnet electric machine (PM machine) for a vehicle or other system includes a rotor assembly, fixed permanent magnets, a stator, an actuator, and one or more repositionable/moveable flux-shunting elements. The flux-shunting element is repositioned to control flux at specific operating points of the PM machine. The rotor assembly has a rotor coaxially surrounding and coupled to a rotor shaft. The permanent magnets are mounted to or in the rotor, and the moveable flux-shunting element is positioned between the rotor shaft and a respective one of the permanent magnets. Inboard and outboard ends of each respective permanent magnet may be oriented toward the rotor shaft and stator, respectively. The actuator selectively positions the moveable flux-shunting element at one or more operating points of the PM machine to vary reluctance in a magnetic circuit formed by the stator and rotor assembly.

公开(公告)号：US20170338699A1

公开(公告)日：2017-11-23

申请号：US15597275

申请日：2017-05-17

Applicant: SKF Magnetic Mechatronics

Inventor： Erwan Salahun ,  Joaquim Da Silva ,  Bruno Tellier

IPC: H02K1/02 ,  H02K7/09 ,  H02K15/02

CPC classification number: H02K1/02 ,  H02K7/09 ,  H02K15/02 ,  H02K2201/09

Abstract: The invention relates to a method of manufacturing a lamination stack used in a rotating electrical machine. The method includes providing naked sheets made of ferritic material; preparing both sides of each sheet so as to obtain a determined surface roughness; coating at least one side of each sheet with an chemically protective electrically insulating material; stacking the coated sheets; compressing the stack obtained; heating the compressed stack at a temperature above the melting temperature of the insulating material; and cooling down the compressed stack so as to form an integral lamination stack consisting of alternating sheets of ferritic material and layers of insulating material. The invention also relates to an electrical machine comprising such a lamination stack.

公开(公告)号：US20170222502A1

公开(公告)日：2017-08-03

申请号：US15328136

申请日：2015-07-23

Applicant: KSB Aktiengesellschaft

Inventor： Daniel GONTERMANN ,  Jochen SCHAAB ,  Michael KOENEN

IPC: H02K1/22 ,  H02K15/02

CPC classification number: H02K1/22 ,  H02K1/246 ,  H02K15/02 ,  H02K15/022 ,  H02K2201/09 ,  H02K2213/03

Abstract: A method for producing a rotor for a reluctance machine, in particular for a synchronous reluctance machine, and a rotor produced by the method, are provided. The laminated rotor core is produced by punching and stacking two or more adjacent laminations of the core. The adjacent laminations are held together by at least one connection point created during the punch stacking, the at least one connection point simultaneously forming a flux barrier of the rotor. The rotor comprises a laminated core, which is stacked from at least two lamination sheets, with the at least two adjacent lamination cuts being connected to each other by at least one connection point forming at least one flux barrier of the rotor.