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公开(公告)号：US20250055337A1
公开(公告)日：2025-02-13
申请号：US18786651
申请日：2024-07-29
Applicant: GKN Automotive Limited
Inventor： Daniel Martino , Sigmund Senoner
Abstract: Cover plate of a rotor of an electric machine, wherein the cover plate has a contact surface which is intended to lie against a laminated core of the rotor; rotor of an electric machine, wherein the rotor is rotatable about an axis of rotation and has a laminated core, wherein at least one cover plate is arranged at an axial end of the laminated core; and method for mounting a rotor, wherein the cover plate and the laminated core are arranged on a rotor shaft, wherein permanent magnets are arranged in first recesses of the laminated core and wherein the recesses are filled with a plastic in order to embed the permanent magnets in the first recesses.
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公开(公告)号：US12218549B2
公开(公告)日：2025-02-04
申请号：US18066810
申请日：2022-12-15
Inventor： Naoya Sasaki
Abstract: According to one embodiment, a rotary electric machine includes a stator and a rotor. In a stator iron core of the stator, tips of the teeth defining openings of the slots through which the armature windings of different phases pass include a pair of chamfers. A rotor iron core of the rotor includes a plurality of grooves the outer peripheral surface of which is concave along a central axis line. Each of the grooves forms a wave shape, and includes a first groove portion disposed in a leading side of the rotation direction and a second groove portion disposed in a trailing side of the rotation direction. The first groove portion and the second groove portion are asymmetric with respect to d-axis.
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公开(公告)号：US20250038596A1
公开(公告)日：2025-01-30
申请号：US18768586
申请日：2024-07-10
Inventor： Mohamed Osama , Xuan Yi , John Russell Yagielski , Shenyan Huang
Abstract: A rotor of an electric machine is provided. The rotor includes a plurality of laminates arranged along an axial direction, the plurality of laminates including a first laminate having: a body formed of a first material, the first material being a ferromagnetic material; and a structural element formed integrally with the body of a second material, the second material being a non-ferromagnetic material.
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公开(公告)号：US20250038595A1
公开(公告)日：2025-01-30
申请号：US18361289
申请日：2023-07-28
Applicant: GM Global Technology Operations LLC
Inventor： Mazharul Chowdhury , Le Chang , William Robert Jensen , Mohammad F. Momen , Alan Del Rio
Abstract: An interior permanent magnet electric machine includes a stator and a rotor. The rotor features a rotor core with slots extending between its opposite ends. These slots contain a segmented magnet assembly, which includes magnet segments of different magnetic materials. The segmented magnet assembly may be divided radially, axially, circumferentially or combinations thereof and may include outer magnet segments made of the first magnetic material and inner magnet segments made of the second magnetic material. Additionally, the segmented magnet assembly includes magnetic poles that are aligned in radial, axial, or circumferential directions.
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公开(公告)号：US20250038585A1
公开(公告)日：2025-01-30
申请号：US18696572
申请日：2021-10-27
Applicant: Mitsubishi Electric Corporation
Inventor： Yuji HIROSAWA , Koji YABE , Yuki HIGASHI
Abstract: A motor includes a rotor comprising a rotor core having an annular shape about an axis and formed of electromagnetic steel sheets stacked in a direction of the axis, the rotor including a permanent magnet attached to the rotor core, and a stator comprising a stator core surrounding the rotor core and formed of electromagnetic steel sheets stacked in the direction of the axis, the stator comprising a winding wound on the stator core and formed of an aluminum wire. A stacking factor O1 of the electromagnetic steel sheets of the stator core and a stacking factor O2 of the electromagnetic steel sheets of the rotor core satisfy: O1
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Patent Agency Ranking
公开(公告)号：US20250030287A1
公开(公告)日：2025-01-23
申请号：US18709133
申请日：2022-11-08
Applicant: DACS A/S
Inventor： Jens Dybdahl , Peter Omand Rasmussen , Simon Staal Nielsen , Mihai Stati
Abstract: A rotor for a permanent motor includes a cylindrical rotor body, a plurality of magnet slots, wherein a circumference of each of the magnet slots, in a plane perpendicular to the rotor axis, has a specific shape, wherein the specific shape comprises a first portion, a second portion and a narrowing between the first and second portions. The rotor comprises a plurality of magnets extending along the length of each of the magnet slots, where the magnets are positioned within the first portion and separated from the second portion by the narrowing, wherein a pair of adjacent magnet slots are configured so that they taper towards a radius of the rotor body, and so that the magnets in a pair of the magnet slots form a magnetic pole.
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公开(公告)号：US20250015651A1
公开(公告)日：2025-01-09
申请号：US18701316
申请日：2021-10-25
Applicant: Mitsubishi Electric Corporation
Inventor： Takaya SHIMOKAWA , Takanori WATANABE , Ryogo TAKAHASHI , Koji YABE
Abstract: A rotor has N/2 (N is an even number) magnet magnetic poles and N/2 virtual magnetic poles. The rotor includes: a rotor core having an annular shape about an axis; and a plurality of permanent magnets attached to the rotor core. Each of the N/2 magnet magnetic poles is formed by at least one permanent magnet of the plurality of permanent magnets, and each of the N/2 virtual magnetic poles is formed by the rotor core. The at least one permanent magnet forming the magnet magnetic pole has a first corner facing an outer circumference of the rotor core and located farthest from the pole center line on one side of the pole center line, and a second corner facing the outer circumference and located farthest from the pole center line on the other side of the pole center line.
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公开(公告)号：US12191712B2
公开(公告)日：2025-01-07
申请号：US17765968
申请日：2020-10-02
Applicant: Schlaeger Kunststofftechnik GmbH
Inventor： Anton Fuchs , Christian Schuller , Marcus Gensel
Abstract: A method for producing a component provided with at least one structural element, in particular a component for an electrical machine, wherein the structural element(s) is fixed in a recess of a carrier body by a fixing material introduced in an injection moulding process, wherein the following method steps are provided: providing a carrier body provided with at least one recess, arranging the structural element(s) at least partially, in particular completely, within a first recess portion arranged in the recess of the carrier body, arranging at least one filler means in a second recess portion of the recess of the carrier body, injecting a fixing material, in particular consisting of plastic, into the first recess portion of the recess of the carrier body in the course of an injection moulding process, wherein the fixing material fixes the at least one structural element(s) within the recess.
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公开(公告)号：US12184135B2
公开(公告)日：2024-12-31
申请号：US18556191
申请日：2022-04-19
Applicant: BOSCHMAN TECHNOLOGIES B.V.
Inventor： Hubert Wilhem Petrus Claassen , Erik Brouwer
IPC: H02K15/12 , B29C45/02 , B29C45/03 , H02K1/04 , H02K15/03 , B29C45/14 , B29L31/00 , H02K1/02 , H02K1/276
Abstract: A rotor core manufacturing method and system allow for molding permanent magnets in an unmolded rotor core to provide an electric motor molded rotor core. The unmolded rotor core includes a shaft and rotor core body having a central through-hole along a longitudinal axis, magnet cavities around the axis with magnets therein. The shaft lies in the central through-hole and projects therefrom, and the molded rotor core includes the rotor core body having the magnets fixed in the cavities. The method includes inserting an unmolded rotor core between the first and second molds of a rotor core molding system; moving the molds together to clamp the rotor core body of the unmolded rotor core with a predetermined pressure; providing a molding material into the magnet cavities; letting the molding material cure within the magnet cavities to a molded rotor core; opening the molds and removing the molded rotor core.
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公开(公告)号：US20240429801A1
公开(公告)日：2024-12-26
申请号：US18339970
申请日：2023-06-22
Applicant: Rivian IP Holdings, LLC
Inventor： Yanyan XIE , Khwaja RAHMAN
Abstract: Aspects of the subject disclosure relate to an electric motor that includes a rotor with both permanent magnets and operable coils. The coils of the rotor can be operated to generate a temporary magnetic field that supplements the permanent magnetic field of the permanent magnets. Accordingly, the amount of torque output by the rotor can be controlled by operating the coils of the rotor as needed.
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