公开(公告)号：US20240364169A1

公开(公告)日：2024-10-31

申请号：US18682795

申请日：2022-07-25

Applicant: Valeo eAutomotive Germany GmbH

Inventor： David FOERSTER ,  Sebastian BEETZ ,  Florian VOLKMUTH ,  Christoph ENGLERT ,  Christoph WIECZOREK ,  Nikolas SEUBERT

IPC: H02K3/38 ,  H02K15/10 ,  H02K15/12

CPC classification number: H02K3/38 ,  H02K15/105 ,  H02K15/12

Abstract: Stator for an electric machine, having a stator core with two axial end sides, a stator winding which extends through the stator core in the axial direction and is formed from a plurality of conductor segments, and covers of a first and a second type. The conductor segments have, at one of the end sides, end sections which are electrically conductively and mechanically connected to one another in pairs to form end section arrangements. The covers of the first type each cover at least two end section arrangements at their free end, and the covers of the second type each cover at least one end section arrangement at their free end.

公开(公告)号：US20240275229A1

公开(公告)日：2024-08-15

申请号：US18560423

申请日：2022-04-25

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： YASUSHI KAMADA

IPC: H02K3/52 ,  H02K3/38 ,  H02K15/10 ,  H02K15/12

CPC classification number: H02K3/522 ,  H02K3/38 ,  H02K15/105 ,  H02K15/12 ,  H02K2203/09

Abstract: A stator includes a core, a plurality of molded coils, a bus bar, and an insulating resin. The core includes a yoke and a plurality of teeth. The plurality of teeth protrude from an inner peripheral surface of the yoke. The plurality of molded coils are arranged on the plurality of teeth. The bus bar is connected to the plurality of molded coils and can be connected to an external circuit. The insulating resin has insulation properties. The insulating resin includes a first resin portion, a second resin portion, and a third resin portion. The first resin portion molds the bus bar. The second resin portion is arranged between the plurality of teeth and the plurality of molded coils. The third resin portion molds the plurality of molded coils. The first resin portion, the second resin portion, and the third resin portion are integrally molded.

公开(公告)号：US12062954B2

公开(公告)日：2024-08-13

申请号：US17273603

申请日：2019-07-29

Applicant: Hitachi Automotive Systems, Ltd.

Inventor： Tomohiro Fukuda ,  Shin Onose ,  Takeshi Konno ,  Yasuhiro Shimada ,  Kenichi Nakayama ,  Hisaya Shimizu ,  Mitsue Hashimoto

IPC: H02K15/00 ,  H02K1/16 ,  H02K3/02 ,  H02K3/12 ,  H02K3/28 ,  H02K3/38 ,  H02K3/48 ,  H02K3/50 ,  H02K15/02 ,  H02K15/10

CPC classification number: H02K15/0081 ,  H02K1/16 ,  H02K3/02 ,  H02K3/12 ,  H02K3/28 ,  H02K3/38 ,  H02K3/48 ,  H02K3/50 ,  H02K15/024 ,  H02K15/105 ,  H02K2213/03

Abstract: This disclosure is directed to a stator of a rotary electric machine. The stator includes a stator coil having a welding portion of segment conductors. Each of the segment conductors includes an exposed conductor wire portion. The exposed conductor includes a root portion adjacent to an insulating coating. A thickness of the insulating coating is 50 μm or more. The predetermined amount of displacement is 1±0.4 times or 2±0.4 times the thickness of the insulating coating. A length of the transition portion is 0.5 times or more and 2 times or less of a thickness of the conductor wire.

公开(公告)号：US20240235308A1

公开(公告)日：2024-07-11

申请号：US18560335

申请日：2022-05-12

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Anoop JASSAL ,  Xiaowei SONG ,  Torben Werge MØLLER

IPC: H02K3/34 ,  H02K3/24 ,  H02K7/18 ,  H02K15/10 ,  H02K15/12

CPC classification number: H02K3/34 ,  H02K3/24 ,  H02K7/1838 ,  H02K15/105 ,  H02K15/12 ,  H02K2215/00

Abstract: A coil for an electric machine including a conductive strand having a first end, a second end, and a plurality of windings between the first and second ends and an electric insulating body within which the conductive strand is at least partially encased, wherein at least a portion of the insulating body includes perforations that allow a coolant to penetrate into the insulating body to cool the coil during use of the electric machine. A method of making the coil includes molding or printing the insulating body about the conductive strand so as to have perforations therein.

公开(公告)号：US12003150B2

公开(公告)日：2024-06-04

申请号：US17263076

申请日：2019-07-24

Applicant: Innomotics GmbH

Inventor： Klaus Büttner ,  Tobias Katzenberger ,  Bastian Plochmann ,  Matthias Warmuth

IPC: H02K3/28 ,  H02K3/38 ,  H02K15/00 ,  H02K15/10 ,  H02K15/12

CPC classification number: H02K15/105 ,  H02K3/28 ,  H02K3/38 ,  H02K15/0081 ,  H02K15/12

Abstract: A stator of a rotary electrical machine includes a laminated core having grooves, windings inserted into the grooves for forming a multi-phase winding system, and an insulating layer made of plastic and sprayed between partial winding overhangs of the windings of phases inserted immediately one after the other. The insulating layer is formed as a mesh-like structure having junctions and brace-like connections running between the junctions.

公开(公告)号：US20240178729A1

公开(公告)日：2024-05-30

申请号：US18283809

申请日：2022-03-22

Applicant: LIEBHERR-AEROSPACE TOULOUSE SAS

Inventor： Mathieu COUDERC ,  François RAMADOUR

IPC: H02K15/00 ,  H02K3/38 ,  H02K15/10

CPC classification number: H02K15/0043 ,  H02K3/38 ,  H02K15/105

Abstract: The invention relates to a method for installing coil groups in an electric machine (100), each coil group (104, 204) comprising at least one coil, each coil being composed of a plurality of turns of conductors, characterized in that it comprises, for each coil group (104, 204), the following installation steps applied to each coil group before being applied to the following coil group: a step of inserting a first coil group into at least two free or partially occupied slots (106) of the electric machine (100), the coil portions arranged outside the slots forming the coil heads, a definitive shaping step by compacting the heads of the coils of said coil group into a predetermined shape, by a preconfigured apparatus.

公开(公告)号：US11984782B2

公开(公告)日：2024-05-14

申请号：US17608289

申请日：2019-05-22

Applicant: Mitsubishi Electric Corporation

Inventor： Takashi Fujiwara ,  Makoto Tsukiji

IPC: H02K3/40 ,  H02K15/10

CPC classification number: H02K3/40 ,  H02K15/105

Abstract: An object is to provide a stator coil having a corner portion with less start points for partial discharge while reducing loss. A stator coil having a conductor bar includes, at a corner portion thereof: a first insulating layer covering an outer periphery of the conductor bar; an electric conductor having one end electrically connected to the conductor bar on a distal end side of the corner portion, and another end placed on an outer surface of the first insulating layer; a first conductive layer covering an outer periphery of the first insulating layer and the electric conductor located on the outer surface of the first insulating layer; a second insulating layer covering an outer periphery of the first conductive layer; and a second conductive layer covering an outer periphery of the second insulating layer.

公开(公告)号：US11973386B2

公开(公告)日：2024-04-30

申请号：US17056830

申请日：2019-03-29

Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.

Inventor： Kenji Nakayama ,  Ryoji Kobayashi ,  Yuichiro Baba

IPC: H02K3/34 ,  H02K3/28 ,  H02K15/10

CPC classification number: H02K3/34 ,  H02K3/28 ,  H02K15/105

Abstract: Since the shape of the insulating paper is complicated, a forming and bending step of the insulating paper is required, and further there is a step of inserting the insulating paper in the middle of coil forming, which causes a problem of damaging the insulating paper.
A fitting state of an insulating paper 201 into the inter-coil gap has an annular taper shape in which a diameter dimension D1 of an annular opening of the insulating paper 201 on a coil end tip side is long, and a diameter dimension d2 of an annular opening of the insulating paper 201 on a stator end face side on the opposite side is short. The insulating paper 201 is made to follow the tapered shape of the inter-coil gap 140 between an inner peripheral coil 120 and an outer peripheral coil 130, and the insulating paper 201 is fitted in a state inclined from the coil end tip side to the stator end face side with respect to an axial direction of the stator 20. Therefore, bending after the insertion of the insulating paper 201 is reduced, the force of the insulating paper 201 trying to come off to the coil end tip side is suppressed, and it is possible to obtain the effect of preventing the floating and the coming off of the insulating paper 201.

公开(公告)号：US20240088763A1

公开(公告)日：2024-03-14

申请号：US18284176

申请日：2022-03-25

Applicant: SIEMENS AKTIENGESELLSCHAFT

Inventor： Tobias KATZENBERGER ,  BASTIAN PLOCHMANN

IPC: H02K15/12 ,  H02K3/38 ,  H02K15/10

CPC classification number: H02K15/12 ,  H02K3/38 ,  H02K15/105 ,  B29K2105/12

Abstract: In a method for encapsulating a winding overhang of a stator which includes a laminated core with windings inserted in grooves of the laminated core such that winding ends protrude from the grooves to form a winding overhang at a distance from a laminated core end and run in a region between the laminated core end and the winding overhang so as to form intermediate spaces between the winding ends, at least one of the intermediate spaces is spanned by a polymer layer such as to prevent a flow of encapsulating compound through the at least one spanned intermediate space, and the winding overhang is encapsulated with the encapsulating compound after placing the stator in a housing of an electric machine.

公开(公告)号：US20230318384A1

公开(公告)日：2023-10-05

申请号：US18043654

申请日：2021-08-26

Applicant: Siemens Aktiengesellschaft

Inventor： Steffen Lang ,  Marek Maleika ,  Jürgen Huber ,  Lisa Sponsel

IPC: H02K3/40 ,  H02K3/30 ,  H02K15/10 ,  H01B3/00

CPC classification number: H02K3/40 ,  H02K3/30 ,  H02K15/105 ,  H01B3/002

Abstract: Various applications of the teachings of the present disclosure include a powder coating formulation suitable for producing an insulation system of an electrical machine. The formulation may include: a curable resin mixture; and spherical SiO2 filler particles having a maximum particle diameter of 100 μm.