Patents Examined by Quyen P. Leung
  • Patent number: 12132372
    Abstract: A winding pack for a stator assembly of an electric motor, including a coil assembly having twelve coils arranged in three groups, each having four coils of a winding, which are interleaved circumferentially. Each group has two pairs of adjacent coils, between which two pairs of the other groups are positioned. All groups have an identical sequence of their winding direction. Each pair contains both winding directions, the order of which differs between the two pairs. The technical winding start coming from one of the terminal regions in the pair that is first when viewed in the circumferential direction and the technical winding end leading to one of the terminal regions in the second pair of the relevant group are located, in relation to the winding pack, at the end face and on the side of the relevant second coil of the pair facing the first coil of this pair.
    Type: Grant
    Filed: April 21, 2022
    Date of Patent: October 29, 2024
    Assignee: NIDEC MOTORS & ACTUATORS (GERMANY) GMBH
    Inventors: Pascual Guardiola, Uwe Lasebnick
  • Patent number: 12051954
    Abstract: A preformed coil assembly for a stator of an electric motor includes first and second winding carriers located on respective opposite ends of the preformed coil assembly and a winding part wound around the winding carriers to form first and second elongated winding portions with an elongated opening therebetween to be fitted around a tooth of a stator. The preformed coil assembly includes first and second insulation films disposed around the first and second winding portions. Each insulation film includes upper and lower folded portions resting against first and second opposite walls of respective winding carriers to provide first and second distances between respective opposite lateral sides of the tooth and a corresponding non-folded portion of respective first and second insulation films. The first and second distances are equal so that the preformed coil assembly is centered with respect to the tooth when mounted therearound.
    Type: Grant
    Filed: April 20, 2022
    Date of Patent: July 30, 2024
    Assignee: ETEL S.A.
    Inventors: Daniele Veronesi, Johann Pourchet
  • Patent number: 11979060
    Abstract: A stator assembly for a rotating electrical machine is operatively associated with an internal cooling circuit including a plurality of cooling channels disposed through a stator core. To directed a liquid coolant medium through the stator core without leakage, the internal cooling circuit is formed from a plurality of cooling tubes including linear tubes and elbow tubes. Linear tubes are disposed in the cooling channels and can be expanded with a hydraulic expansion tool to frictionally fit the linear tube therein. The elbow tubes can fluidly couple two or more linear tubes and are disposed proximately beyond the first and second axial end faces of the stator core. To encapsulate the elbow tubes, first and second stator end castings of thermally conductive, electrically isolating material can be cast adjacent the first and second axial end faces.
    Type: Grant
    Filed: May 5, 2021
    Date of Patent: May 7, 2024
    Assignee: ABB Schweiz AG
    Inventors: Wei Xing, Ghanshyam Shrestha
  • Patent number: 11973405
    Abstract: A stator for a rotating electric machine includes a stator core, a coil having a coil end, a cooling jacket that is attached to the stator core so as to house the coil end in the cooling jacket and that allows cooling oil to flow therethrough, introduction parts, and discharge parts. The coil end includes first portions, extending parallel to an end surface of the stator core, and pairs of second portions, each pair being connected to both ends of a corresponding one of the first portions, the pairs extending in a direction parallel to an axial direction. The cooling jacket includes an inner circumferential wall and an outer circumferential wall. The introduction parts are provided on the outer circumferential wall, and the discharge parts are provided on the inner circumferential wall.
    Type: Grant
    Filed: November 23, 2021
    Date of Patent: April 30, 2024
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Sumio Shirai, Daichi Maruyama
  • Patent number: 11971278
    Abstract: Among eight teeth pairs, one teeth pair is a non-use teeth pair around which an exciting coil is not wound, and other seven teeth pairs are use teeth pairs around which the exciting coil is wound zero or more times. The number Wa of windings of the exciting coil wound around the tooth included in the use teeth pair in a 90° positional relationship with respect to the non-use teeth pair and the number Wb of windings of the exciting coil wound around the tooth included in the use teeth pair in a positional relationship other than the 90° positional relationship with respect to the non-use teeth pair satisfy a relationship of 0?Wa?0.5Wb. The number Wa of windings and the number Wb of windings may satisfy a relationship of 0<Wa?0.5Wb.
    Type: Grant
    Filed: January 7, 2022
    Date of Patent: April 30, 2024
    Assignee: ICHINOMIYA DENKI CO., LTD.
    Inventor: Yoshikazu Kinashi
  • Patent number: 11936260
    Abstract: A stator for an electric machine includes: a laminated stator core including stator grooves and having a plug-in side and a bending side, which bending side lies opposite the plug-in side in an axial direction; a stator winding having hairpin elements which are pushed into the stator grooves on the plug-in side of the laminated stator core and bent and electrically connected to the stator winding on the bending side of the laminated stator core; and an end plate which is arranged on the plug-in side in the axial direction between the laminated stator core and the hairpin elements. The hairpin elements are arranged in the axial direction so as to bear against the end plate.
    Type: Grant
    Filed: June 28, 2021
    Date of Patent: March 19, 2024
    Assignee: DR. ING. H.C. F. PORSCHE AKTIENGESELLSCHAFT
    Inventors: Joerg Schneider, Andreas Lober, Rolf Graef, Tobias Schmack
  • Patent number: 11923738
    Abstract: A vehicle electric machine includes a stator core having an inner diameter defining a plurality of slots, an outer diameter, and a plurality of mounting ears disposed radially outboard of the outer diameter. At least one of the mounting ears defines a cooling channel extending in an axial direction of the stator core. A radial distance between a center of the stator core and the cooling channel is greater than a radial distance between the center and the outer diameter. The machine further includes windings having portions disposed in the slots and end windings adjacent to an end face of the stator core.
    Type: Grant
    Filed: October 1, 2021
    Date of Patent: March 5, 2024
    Assignee: Ford Global Technologies, LLC
    Inventors: Franco Leonardi, Michael W. Degner, Prasad Dev Hanumalagutti
  • Patent number: 11916440
    Abstract: One aspect of a rotor of the present invention includes: a rotor core rotatable about a central axis; and a rotor magnet fixed to an outer peripheral surface of the rotor core. The rotor magnet has a plurality of magnetized portions arranged along a circumferential direction in a Halbach array. The plurality of magnetized portions include a plurality of radially magnetized portions whose magnetization direction is a radial direction and a plurality of non-radially magnetized portions whose magnetization direction is different from the radial direction. The rotor core is a non-magnetic member that has a hole, recessed from a surface on one side in an axial direction of the rotor core to the other side in the axial direction and is made of a non-magnetic material. The hole is located on the radially inner side of the radially magnetized portion.
    Type: Grant
    Filed: January 10, 2020
    Date of Patent: February 27, 2024
    Assignee: NIDEC CORPORATION
    Inventors: Junya Tanaka, Tomoya Ueda
  • Patent number: 11909260
    Abstract: Provided is an electric generator including a stator including: a stator yoke a plurality of teeth, a plurality of slots extending radially from the stator yoke to respective radial slot ends, the plurality of slots being circumferentially interposed between the teeth of the stator, each slot including a bottom portion adjacent to the stator yoke and a top portion adjacent to the respective radial slot end. The stator further includes a plurality of coils housed in the plurality of slots, each slot housing at least one coil in the bottom portion and at least another coil in the top portion, each coil housed in the bottom portion of a first slot of the plurality of slots being connected to another respective coil housed in the top portion of a second slot of the plurality of slots.
    Type: Grant
    Filed: April 3, 2019
    Date of Patent: February 20, 2024
    Assignee: SIEMENS GAMESA RENEWABLE ENERGY A/S
    Inventors: Ziad Azar, Erik Groendahl, Subhra Samanta, Arwyn Thomas
  • Patent number: 11894722
    Abstract: A coil support for preformed flat coils of a stator of an electric rotary motor includes an annular supporting structure and a plurality of columns extending upwardly from the supporting structure. The columns are spaced apart from each other to form a corresponding plurality of coil receiving portions configured to hold the preformed flat coils in place before a potting operation. Each of the coil receiving portions is configured to support a lower part of one of the preformed flat coils.
    Type: Grant
    Filed: September 20, 2021
    Date of Patent: February 6, 2024
    Assignee: ETEL S.A.
    Inventors: Johann Pourchet, Loic Moreno, Manish Mittal, Jeremie Mallamaci, Cyrille Viennet
  • Patent number: 11894739
    Abstract: A flux machine has plural coil assemblies and plural magnet sets arranged in mutual close proximity and circularly about a central axis. Either one of the coil assemblies and the magnet sets are supported by at least one axle which is aligned with the central axis, and either one of the coil assemblies and magnet sets executes rotary motion about the central axis when electrical current is present in the coil assemblies. Magnetic flux of the magnet sets is directed axially and radially while machine rotation is orthogonal to the direction of flux. A plurality of magnets in each magnet set are supported by one or another of a plurality of coaxially aligned axles so that the flux machine may operate as an electrical motor, as an electrical generator, or both at the same time.
    Type: Grant
    Filed: July 22, 2015
    Date of Patent: February 6, 2024
    Assignee: CLEARWATER HOLDINGS, LTD.
    Inventors: G. Noah Newmark, Stephen M. Collins, R. Morgan Harwith
  • Patent number: 11888351
    Abstract: A core that is used in an axial-gap rotary electric machine and that includes a body, and frame-shaped flange portions. The body includes an annular yoke and columnar teeth that are arranged in a circumferential direction of the yoke. The flange portions are fixed to end portions of the respective teeth. The yoke and the teeth are composed of a single powder compact. Each of the flange portions is composed of a powder compact that has a through-hole. The end portion of each of the teeth is inserted in the through-hole, and an end surface of each of the teeth is exposed from the through-hole. A ratio of an area of the end surface of each of the teeth to an area within an outer circumferential edge of each of the flange portions is 7.5% or more in a plan view in an axial direction of the yoke.
    Type: Grant
    Filed: September 5, 2019
    Date of Patent: January 30, 2024
    Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO ELECTRIC SINTERED ALLOY, LTD.
    Inventors: Tatsuya Saito, Yuichi Nakamura, Tomoyuki Ueno
  • Patent number: 11876405
    Abstract: A stator of an electric motor includes a stator core including a rim and a plurality of stator teeth extending from the rim. The plurality of stator teeth define a plurality of tooth gaps between circumferentially adjacent stator teeth. A plurality of stator windings are wrapped along the plurality of stator teeth. The plurality of stator windings include a plurality of core segments extending along the plurality of tooth gaps, and a plurality of end turn segments connecting adjacent core segments. A plurality of non-electrically conductive cooling channels are located in the stator core. The plurality of cooling channels are configured to direct a cooling fluid flow therethrough to cool the plurality of stator windings.
    Type: Grant
    Filed: January 14, 2020
    Date of Patent: January 16, 2024
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Kimberly Rae Saviers, Ram Ranjan, Jagadeesh Kumar Tangudu
  • Patent number: 11863022
    Abstract: A motor includes a rotor magnet, a stator, and a magnetic sensor. The rotor magnet includes magnetized portions in a Halbach array, and having radially magnetized portions whose magnetization direction is a radial direction and non-radially magnetized portions. In first and second radially magnetized portions, magnetic poles on both sides in the radial direction are arranged opposite to magnetic poles on both sides in the radial direction of the first radially magnetized portion. The first and second radially magnetized portions are alternately arranged along a circumferential direction with at least one non-radially magnetized portion therebetween. The magnetic sensor is located on the other side in the radial direction with respect to the rotor magnet. A non-magnetized portion is in an axial portion of the rotor magnet where a magnetic field is detected by the magnetic sensor, and located between the first and second radially magnetized portions in the circumferential direction.
    Type: Grant
    Filed: January 10, 2020
    Date of Patent: January 2, 2024
    Assignee: NIDEC CORPORATION
    Inventor: Junya Tanaka
  • Patent number: 11863021
    Abstract: A hermetic compressor includes an electric motor that includes a rotor having a plurality of permanent magnets inserted into a rotor core, a connection part made of a non-magnetic material and provided at an axial end portion of the rotor core, and an inertial core made of a magnetic material and provided at an axial end of the connection part. The connection part includes a plurality of first fixing portions, a plurality of second fixing portions spaced apart from the plurality of first fixing portions in an axial direction, and a plurality of link portions disposed between the plurality of first fixing portions and the plurality of second fixing portions.
    Type: Grant
    Filed: November 12, 2021
    Date of Patent: January 2, 2024
    Assignee: LG Electronics Inc.
    Inventors: Inbum Park, Bokann Park, Chisung Park, Donghyun Lee
  • Patent number: 11863054
    Abstract: A kinetic power generation unit improves the magnetic field of an electric motor and the magnetic field of a power generator into a same magnetic field coupling of a same rotor, so that the rotors of electric motor and the power generator have the same rotational direction, and an exciting winding of the electric motor changes and transmits phases sequentially to a phase voltage by a brushless drive controller, so that an interference effect on the counter electromotive force of the electric motor and the counter-electromotive force of the power generator is changed to a positive effect.
    Type: Grant
    Filed: July 1, 2020
    Date of Patent: January 2, 2024
    Inventor: Kang Chin Lin
  • Patent number: 11855498
    Abstract: An electric motor comprises: a rotor having poles equaling a first number; and a stator having slots equaling a second number, the stator having stator windings formed by conductors wound in a wave pattern around the stator, wherein a third number of the conductors are located in each of the slots, wherein the conductors form three balanced parallel paths through the slots, each of the conductors in the three balanced parallel paths undergoing a same number of pitch turns, each of the pitch turns being either a standard pitch turn or a nonstandard pitch turn, the standard pitch turn involving wrapping around slots equaling the second number divided by the first number, the nonstandard pitch turn involving wrapping around more or fewer slots than the standard pitch turn, wherein each of the three balanced parallel paths forms a repeating pattern throughout the slots.
    Type: Grant
    Filed: November 19, 2020
    Date of Patent: December 26, 2023
    Assignee: Atieva, Inc.
    Inventors: Yateendra Deshpande, Vivek Meenakshi Sundaram, Emad Dlala
  • Patent number: 11855491
    Abstract: The present invention may provide a motor including a rotor and a stator disposed to correspond to the rotor, wherein the rotor includes a rotor core and a magnet disposed on the rotor core, a tooth of the stator includes a first surface facing the magnet, the magnet includes a second surface in contact with the rotor core and a third surface which is spaced apart from the second surface and faces the first surface, the third surface includes a flat surface, and a first length which is a shortest distance of the flat surface is in the range of 46% to 50% of a second length of a shortest distance of the first surface.
    Type: Grant
    Filed: August 26, 2020
    Date of Patent: December 26, 2023
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Jin Su Pyeon, Tae Ho Kim
  • Patent number: 11855487
    Abstract: A stator liquid cooling structure and a stator structure of a stator yokeless disc motor are provided. The cooling structure includes an annular stator bracket and a water jacket. An outer periphery of the stator bracket is in a groove structure and is fixedly connected with the water jacket. Opposite upper and lower ends of the water jacket are provided with a liquid inlet and a liquid outlet. The stator structure includes stator cores, an armature winding, the stator bracket and the water jacket. A first stator core and a second stator core of the stator cores are same in structure and oppositely arranged. The armature winding is wound on first stator tooth bodies and second stator tooth bodies of the stator cores; the first stator tooth bodies and the second stator tooth bodies are inserted into gaps between adjacent blade-shaped cavities and fixed on the stator bracket.
    Type: Grant
    Filed: June 8, 2023
    Date of Patent: December 26, 2023
    Assignee: SHENYANG UNIVERSITY OF TECHNOLOGY
    Inventors: Wenming Tong, Shengnan Wu, Deyi Cai, Jianguo Jia, Zhitao Wu
  • Patent number: 11855492
    Abstract: A rotor for a rotary electric machine and having: a plurality of permanent magnets, which are axially oriented and are arranged beside one another around a rotations axis so as to form a closed ring; a support cylinder, which has an outer surface, on which the permanent magnets rest, and a central cavity; and two half-shafts, which are independent of and separate from one another and are singularly inserted in opposite ends of the central cavity of the support cylinder so as to form one single block with the support cylinder. The permanent magnets are circumferentially arranged one following the other according to a Halbach array so as to nullify the magnetic field radially on the inside of the permanent magnets and so as to maximize the magnetic field radially on the outside of the permanent magnets.
    Type: Grant
    Filed: August 1, 2022
    Date of Patent: December 26, 2023
    Assignee: FERRARI S.p.A.
    Inventors: Davide Ferrara, Paolo Faverzani, Luca Poggio