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1.发明公开公开(公告)号：US20240364155A1
公开(公告)日：2024-10-31
申请号：US18767933
申请日：2024-07-09
Inventor： Yonghua WU , Jingxin CHEN , Mingpan PAN
CPC classification number: H02K1/276 , H02K1/02 , H02K2213/03
Abstract: A modular permanent magnet rotor produced by injection molding, including: an inner core including a central axial hole; a plurality of permanent magnets; a plastic body; and a plurality of outer iron cores. A plurality of radial grooves are formed between every two adjacent outer iron cores, and the plurality of permanent magnets are disposed in the plurality of radial grooves, respectively. The inner core includes a circumferential outer wall including a plurality of dovetail grooves; each of the plurality of outer iron cores includes an inner end includes a dovetail protrusion. The plurality of outer iron cores are disposed around the circumferential outer wall of the inner core, and dovetail protrusions are embedded in the plurality of dovetail grooves, respectively. A gap is formed between the front end of each of the dovetail protrusions and the bottom end of each of the plurality of dovetail grooves.
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公开(公告)号：US12132356B2
公开(公告)日：2024-10-29
申请号：US17245869
申请日：2021-04-30
Applicant: DENSO CORPORATION
Inventor： Yuki Takahashi , Kazuya Iwase
IPC: H02K1/27 , H02K1/278 , H02K1/2791 , H02K1/28 , H02K3/28
CPC classification number: H02K1/2791 , H02K1/278 , H02K1/28 , H02K3/28 , H02K2213/03
Abstract: In a rotating electrical machine, a field generator includes a magnet unit and a cylindrical magnet holder. The magnet unit includes circular-arc magnets arranged in the circumferential direction. Each magnet has an outer peripheral surface. The magnet unit includes a magnet fastening member configured to fasten the magnets. Each magnet has first and second end surfaces in the circumferential direction. The first end surface of each magnet is located to be in contact with the magnet located adjacent to the first end surface thereof. The second end surface of each magnet is located to be in contact with the magnet located adjacent to the second end surface thereof. The magnet fastening member is wound around the outer peripheral surfaces of the circumferentially arranged magnets to radially and inwardly press the outer peripheral surfaces of the circumferentially arranged magnets.
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公开(公告)号：US20240348115A1
公开(公告)日：2024-10-17
申请号：US18682196
申请日：2021-09-08
Applicant: Mitsubishi Electric Corporation
Inventor： Hiroki IWATA , Tomoki MASUKO , Atsushi MATSUOKA
CPC classification number: H02K1/276 , F25B31/026 , H02K21/14 , H02K2213/03
Abstract: A rotor core has a magnet insertion hole. The magnet insertion hole has a first hole portion located at a center thereof, and two second hole portions extending from both ends of the first hole portion toward the outer circumference of the rotor core. A first permanent magnet is disposed in the first hole portion, and a second permanent magnet is disposed in each second hole portion. The rotor core has a first slit formed between each second hole portion and the magnetic pole center line and having a length in the circumferential direction, and a second slit formed between the first slit and the magnetic pole center line and having a length in the radial direction. The shortest distance C [mm] from the first slit to the magnet insertion hole and the shortest distance S [mm] from the first slit to the outer circumference satisfy S≤−0.7517 C2+0.2021 C+1.1395.
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公开(公告)号：US12119732B2
公开(公告)日：2024-10-15
申请号：US18029845
申请日：2021-11-02
Applicant: Flender GmbH
Inventor： Daniel Friedl , Thomas Garhammer , Robert Gruber , Mesaros Akos Keceli , Oliver Memminger , Günther Ortmeier , Klaus Schifferer , Laslo Toldi , Anatoli Vogel
CPC classification number: H02K7/183 , H02K1/185 , H02K2213/03
Abstract: An electric machine includes a hollow-cylindrical stator and at least two receiving elements, each receiving element at least partially enclosing the stator in a circumferential direction along an inner coverage length and conjointly connected to the stator in the circumferential direction along an inner fastening length. A stator housing is conjointly connected to the receiving elements in the circumferential direction along the outer fastening length. The inner fastening length extends at most along 120° in the circumferential direction, and the outer fastening length extends at most along 200° in the circumferential direction.
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公开(公告)号：US12119711B2
公开(公告)日：2024-10-15
申请号：US17779912
申请日：2020-10-22
Applicant: Robert Bosch GmbH
Inventor： Thomas Pagoni , Robert Bonasewicz , Simon Mensak , Marco Eitzert
IPC: H02K1/27 , H02K1/2733 , H02K15/03
CPC classification number: H02K1/2733 , H02K15/03 , H02K2213/03
Abstract: A rotor for an electric machine, in particular for a brushless DC motor, includes a hollow cylindrical main body that is rotationally fixed to a machine shaft. The main body includes a plurality of radial protrusions arranged over its casing surface in the circumferential direction and in the axial direction and offset relative to one another by a defined offset angle. Each radial protrusion is limited over an angular range, which is smaller than the offset angle. The hollow cylindrical main body is permanently connected, in particular adhered, to a hollow cylindrical body surrounding same in the circumferential direction by way of a joining process. A method for producing a rotor for an electric machine is also disclosed. The method includes (i) using rotor laminations for a rotor lamination stack of the rotor, wherein a plurality of rotor laminations have a respective at least one radial protrusion that is limited over an angular range, (ii) stacking the rotor laminations to form the rotor lamination stack in such a way that, of the plurality of rotor laminations having at least one radial protrusion, neighboring rotor laminations are rotated relative to one another about a defined offset angle that is greater than the angular range of the at least one radial protrusion, (iii) applying a joining agent, in particular an adhesive, to an outer casing of the rotor lamination stack, preferably between the radial protrusions, and/or to an inner surface of a hollow cylindrical body, and (iv) sliding the hollow cylindrical body onto the rotor lamination stack. An electric machine is also disclosed that includes a corresponding rotor, as well as an electrical processing device having a corresponding electric machine.
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Patent Agency Ranking
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
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).
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公开(公告)号：US12101008B2
公开(公告)日：2024-09-24
申请号：US17749369
申请日：2022-05-20
Applicant: BorgWarner Inc.
Inventor： Kirk Neet , Tim Sailors
CPC classification number: H02K3/14 , H02K1/165 , H02K3/28 , H02K2213/03
Abstract: A winding for a stator comprises (i) a plurality of first end turns provided on a first end of the stator core, (ii) straight portions extending through the slots, and (iii) a plurality of second turns provided on a second end of the stator core. The straight portions are arranged in layers in the slots in a number of layers. Each of the second end turns connects straight portions in two consecutive layers of two slots and is defined by a first common twist associated with one of the two consecutive layers and a second common twist associated with another of the two consecutive layers. The first common twist and the second common twist are identical for the second end turns in a first half of consecutive layers, and the first common twist and the second common twist are different for the second end turns in a second half of consecutive layers.
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公开(公告)号：US20240305180A1
公开(公告)日：2024-09-12
申请号：US18597793
申请日：2024-03-06
Applicant: NIDEC CORPORATION
Inventor： Yu-Wei HSU , Sheng-Chan YEN , Guo-Jhih YAN , Cheng-Tsung LIU
IPC: H02K21/46
CPC classification number: H02K21/46 , H02K2213/03
Abstract: A synchronous reluctance motor includes a rotor having a rotor iron core and a stator having pole teeth. The rotor iron core defines multiple magnetic poles. A magnetic barrier area is defined between adjacent magnetic poles in a circumferential direction, and a conductor area is located at a radially outer side of the magnetic barrier area. The magnetic barrier area is provided with a hole arranged in multiple layers in a radial direction and defining a magnetic barrier. The conductor area is provided with multiple conductors arranged at substantially equal intervals in the circumferential direction and having substantially identical cross-sectional shapes as each other. The following relationship is satisfied: Nc={2×[Nt/(2×Np)−1]−1}×Np where Nt is a number of the pole teeth, Np is a number of the magnetic poles, and Nc is a number of the conductors.
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公开(公告)号：US20240305147A1
公开(公告)日：2024-09-12
申请号：US18041240
申请日：2021-12-24
Inventor： Ran AN , Tingke SONG , Kun ZENG , Chuneng CAO , Juncai PENG
Abstract: The present disclosure discloses a stator assembly. The stator assembly comprises: a stator core comprising a plurality of stator teeth, and any two adjacent ones of the plurality of stator teeth are provided with a stator slot therebetween; and a stator winding formed by a wire wound on the stator teeth, the stator winding being received in the stator slots. A cross section of the stator winding in a winding direction of the wire is a plurality of wires having orthohexagonal shapes, and any two adjacent ones of wires closely fit each other.
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公开(公告)号：US12088168B2
公开(公告)日：2024-09-10
申请号：US17900339
申请日：2022-08-31
Applicant: Beckhoff Automation GmbH
Inventor： Klaus Neumann , Lukas Bentfeld , Keir Maguire , Tim Kaulmann , Benjamin Jurke
IPC: H02K41/03 , H02K11/215 , H02P23/00
CPC classification number: H02K41/031 , H02K11/215 , H02P23/0018 , H02K2213/03
Abstract: A method for controlling a planar drive system includes generating a position allocating function, in an allocation generating step; measuring a plurality of measuring values of the magnetic rotor field by magnetic field sensors for a position of the rotor relative to the stator module, in a magnetic rotor field determining step; applying the position determination function to the plurality of measuring values of the magnetic rotor field of the plurality of magnetic field sensors, in a measuring value analysis step; and determining the position of the rotor relative to the stator module on the basis of the measurements of the magnetic rotor field measured by the plurality of magnetic field sensors and based on the allocations of the position allocating function, in a position determining step. The application further relates to such a planar drive system.
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