公开(公告)号：US20240339875A1

公开(公告)日：2024-10-10

申请号：US18297855

申请日：2023-04-10

Applicant: ABB Schweiz AG

Inventor： William E. Martin ,  John M. Zedek ,  Stephen T. Evon

IPC: H02K1/20 ,  H02K5/15 ,  H02K15/02

CPC classification number: H02K1/20 ,  H02K5/15 ,  H02K15/02

Abstract: A lamination for a stator of an electric motor includes: a material sheet having a generally circular shape with a center and a radial direction, an outer contour, and an inner contour, the outer and inner contours being generally concentric with the center. The inner contour is defined by an arrangement of a plurality of teeth and a plurality of stator slots, each tooth of the plurality of teeth having one stator slot of the plurality of stator slots to a first side of the tooth and one stator slot of the plurality of stator slots to a second side of the tooth, the inner contour defining a rotor hole for receiving a rotor of the electric motor. The material sheet has a plurality of internal cooling holes arranged around the rotor hole.

公开(公告)号：US12110579B2

公开(公告)日：2024-10-08

申请号：US17397295

申请日：2021-08-09

Applicant: VACUUMSCHMELZE GMBH & CO KG

Inventor： Niklas Volbers ,  Manuel Demper ,  Joachim Gerster

IPC: C22F1/16 ,  C21D1/04 ,  C21D6/00 ,  C21D8/12 ,  C22C30/00 ,  H01F1/147 ,  H02K15/02

CPC classification number: C22F1/16 ,  C21D1/04 ,  C21D8/1244 ,  C22C30/00 ,  H01F1/147 ,  H02K15/02 ,  C21D6/007 ,  C21D8/1222 ,  C21D8/1233 ,  C21D8/1261 ,  C21D8/1272 ,  C21D8/1283 ,  C22C2202/02

Abstract: A method of producing a CoFe alloy strip is provided. The method comprises hot rolling a CoFe alloy to form a hot rolled strip, followed by quenching the strip from a temperature above 700° C. to a temperature of 200° C. The CoFe alloy comprises an order/disorder temperature To/d and a ferritic/austenitic transformation temperature Tα/γ, wherein Tα/γ>To/d. The method further comprises cold rolling the hot rolled strip, after cold rolling, continuous annealing the strip at a maximum temperature T1, wherein 500° C.

公开(公告)号：US20240333065A1

公开(公告)日：2024-10-03

申请号：US18579714

申请日：2022-07-13

Applicant: MAXON INTERNATIONAL AG

Inventor： Julien BAUDEY ,  Jens SCHULZE ,  Andreas STADELMANN

IPC: H02K3/47 ,  H02K1/12 ,  H02K3/28 ,  H02K15/00 ,  H02K15/02 ,  H02K15/08 ,  H02K15/12

CPC classification number: H02K3/47 ,  H02K1/12 ,  H02K3/28 ,  H02K15/0037 ,  H02K15/02 ,  H02K15/08 ,  H02K15/12 ,  H02K2213/03

Abstract: A stator (2) for use in a slotless electric motor (1), particularly an electronically commutated motor, has a winding body (21) in the form of a hollow cylinder, consisting of three or more coils (26), and having a working section (15) located between two winding heads (23, 23′) at two longitudinal ends of the winding body (21), and a cylindrical stator lamination stack (22), close-fittingly encompassing said working section (15) of the winding body (21). The two winding heads (23) consist of the longitudinal ends (28) of the three or more coils (26). They positively lock the stator lamination stack (22) along a longitudinal axis (19) of the winding body (21). The two winding heads (23) have the shape of a circular flange with an inner radius (rwh) essentially equal to an inner radius (rws) of the working section (15) of the winding body (21).

公开(公告)号：US20240307952A1

公开(公告)日：2024-09-19

申请号：US18546833

申请日：2022-02-11

Applicant: AE GROUP AG

Inventor： Peter LUTZE ,  Daniel KREZ ,  Kenneth PETERS

IPC: B22D19/00 ,  B22C9/10 ,  H02K15/02 ,  H02K15/14

CPC classification number: B22D19/0054 ,  B22C9/105 ,  H02K15/02 ,  H02K15/14 ,  H02K2215/00

Abstract: The invention relates to a method for producing an electric motor housing, comprising the steps: (a) positioning at least stator part (30) in a support body interior chamber of support body (22), (b) arranging a casting core (42) on the support body (22), (c) then casting the liquid metal around the support body (22) and the casting core (42), resulting in a torque-proof connection between stator part (30) and a casting (26) as a result of the solidification of the liquid metal.

公开(公告)号：US20240283333A1

公开(公告)日：2024-08-22

申请号：US18436445

申请日：2024-02-08

Applicant: TOYOTA BOSHOKU KABUSHIKI KAISHA

Inventor： Yasunori SAKURAI ,  Shinichi TANIGUCHI

IPC: H02K15/02

CPC classification number: H02K15/02 ,  H02K2215/00

Abstract: A method for manufacturing a laminated iron core includes forming laminated blocks to form each laminated block, laminating the laminated blocks to form a laminated iron core, and crimping dowels of the iron core pieces to each other. The method further includes measuring a plate thickness of a punchable portion of a workpiece, calculating an estimated lamination thickness, measuring a lamination thickness of the laminated iron core, and calculating a corrected value. The measuring the lamination thickness is performed before the crimping the dowels. The calculating the estimated lamination thickness performed after the calculating the corrected value includes calculating the estimated lamination thickness by accumulating a corrected plate thickness. The forming the laminated blocks includes adjusting the number of laminations of the iron core pieces in each of the laminated blocks such that the lamination thickness of the laminated iron core approaches the estimated lamination thickness.

公开(公告)号：US20240271236A1

公开(公告)日：2024-08-15

申请号：US18568640

申请日：2022-06-30

Applicant: UNIVERSITY OF PITTSBURGH - OF THE COMMONWEALTH SYSTEM OF HIGHER EDUCATION

Inventor： Paul OHODNICKI ,  Ahmed TALAAT ,  Tyler PAPLHAM

IPC: C21D1/42 ,  C21D6/00 ,  C21D9/00 ,  H01F1/147 ,  H01F41/02 ,  H02K15/02

CPC classification number: C21D1/42 ,  C21D6/00 ,  C21D9/0068 ,  H01F1/14766 ,  H01F41/02 ,  C21D2221/00 ,  H02K15/02

Abstract: The disclosed concept pertains to a method of processing soft magnetic alloys, and, in particular, a method of processing soft magnetic alloys using a spatially selective heating technique comprising electromagnetic field assisted thermal processing in order to spatially vary the magnetic and mechanical properties within the alloy in a selective manner. The disclosed concept includes a thermal processing method that includes providing a soft magnetic alloy component, and applying an electromagnetic field to the component that generates heat internally within the component in a spatially varying manner to cause a number of magnetic properties and mechanical properties of the soft magnetic alloy to vary spatially within the component.

公开(公告)号：US20240266929A1

公开(公告)日：2024-08-08

申请号：US18566684

申请日：2021-11-26

Applicant: BMC CO., LTD.

Inventor： Seung Soo KIM

IPC: H02K15/02 ,  B32B37/00 ,  B32B37/10 ,  B32B38/04

CPC classification number: H02K15/02 ,  B32B37/0046 ,  B32B37/10 ,  B32B38/04 ,  B32B2038/042

Abstract: The apparatus for manufacturing a laminated core according to the present invention is characterized by comprising a lower die 10 comprising a plurality of piercing dies 11 and a laminating unit 13; and an upper die 20 comprising piercing punches 21 arranged above the piercing dies 11 and a blanking punch 22 arranged above the laminating unit 13, the laminating unit 13 comprising a blanking die 131 and a squeeze ring 132 installed at a lower part of the blanking die 131, the apparatus further comprising a back pressure unit 14 installed at a lower part of the squeeze ring 132, wherein the back pressure unit 14 comprises a back pressure plate 141; a back pressure cylinder 142 for operating a cylinder rod 143 which moves 144 the back pressure plate 141 up and down; and a scale bar head 145 installed at a lower part of the cylinder rod 143.

公开(公告)号：US20240250588A1

公开(公告)日：2024-07-25

申请号：US18414814

申请日：2024-01-17

Applicant: ZF Friedrichshafen AG

Inventor： Christian BENKERT ,  Felix Viebahn

IPC: H02K15/02 ,  H02K15/12

CPC classification number: H02K15/02 ,  H02K15/12 ,  H02K2215/00

Abstract: A installation for producing laminated cores, bonded over their entire surface, for an electrical machine, comprising: a workpiece carrier for receiving a semi-finished product and for applying a defined axial prestressing force to the semi-finished product, the semi-finished product having a plurality of electrical sheet laminations coated with Backlack, and at least two stations, comprising a heating station for heating the semi-finished product and a cooling station for energy-assisted cooling of the semi-finished product, wherein the at least two stations are arranged spatially separated from one another and are passed through by the workpiece carrier.

公开(公告)号：US20240235286A1

公开(公告)日：2024-07-11

申请号：US18008452

申请日：2022-05-12

Applicant: JIANGSU UNIVERSITY

Inventor： Liang XU ,  Lele CHANG ,  Tingting JIANG ,  Wenxiang ZHAO

IPC: H02K1/17 ,  H02K1/16 ,  H02K3/28 ,  H02K15/02

CPC classification number: H02K1/17 ,  H02K1/165 ,  H02K3/28 ,  H02K15/02 ,  H02K2213/03

Abstract: A single winding hybrid excitation magnetic field modulation motor includes a stator, a rotor, a winding and a permanent magnet. The stator includes a stator iron core, a permanent magnet and a winding. The stator iron core includes stator teeth and stator yoke. Each stator tooth is split into an equal number of split teeth facing the air gap side. All permanent magnets are embedded in the grooves between the split teeth on the same stator tooth, the polarity of all permanent magnets located on the same stator tooth is the same, and the polarity of the permanent magnets on the adjacent stator teeth is opposite. A single non-overlapping concentrated winding is wound on all stator teeth, and DC current and AC current are simultaneously passed into each set of windings, in which field winding and permanent magnet are excited together to form hybrid excitation.

公开(公告)号：US20240223030A1

公开(公告)日：2024-07-04

申请号：US18388136

申请日：2023-11-08

Applicant: SAGITTA INDUSTRIAL CORPORATION

Inventor： FANG-FU CHANG

IPC: H02K1/18 ,  H02K3/28 ,  H02K15/00 ,  H02K15/02 ,  H02K15/12

CPC classification number: H02K1/18 ,  H02K3/28 ,  H02K15/0068 ,  H02K15/02 ,  H02K15/12 ,  H02K2203/09

Abstract: A motor stator wiring structure includes a stator wiring frame, a connecting element, and a wire group. The stator wiring frame has a block which has a connecting portion. The connecting portion has a first mating surface. Each wire in the wire group has a bare wire segment, an encapsulation segment, and an extension segment. The encapsulation segments of the wires are assembled within channels of the connecting member. The connecting member has a second mating surface that is connected to the first mating surface of the connecting portion. Multiple coils are wound around the stator wiring frame, and the lead ends of the coils are respectively wound around the bare wire ends of the wires and soldered in place. This achieves the simplification of the production process, reduction of production costs, and adaptability to adjusting the wiring for motors of different size specifications in the motor stator wiring structure.