Patents by Inventor Hiroyuki Hattori

Hiroyuki Hattori has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210167666
    Abstract: A cooling device cools a motor mounted on a vehicle and an inverter driving the motor. The cooling device includes: a common flow path through which coolant flows; a first flow path branching from the common flow path and arranged to cool the inverter and a stator of the motor; and a second flow path branching from the common flow path, being independent of the first flow path, and arranged to cool a rotor of the motor. The cooling device further includes a distribution structure configured to distribute the coolant to the first flow path and the second flow path, and to change a distribution ratio of a first coolant distributed to the first flow path out of the coolant and a second coolant distributed to the second flow path out of the coolant.
    Type: Application
    Filed: November 30, 2020
    Publication date: June 3, 2021
    Inventors: Junichi Deguchi, Eiji Yamada, Hiroyuki Hattori, Hiroaki Kodera, Daisuke Tokozakura, Satoshi Tominaga, Yuki Iwama
  • Publication number: 20210155080
    Abstract: A current estimating device that estimates a capacitor current of a high-voltage circuit for driving a motor, wherein the current estimating device calculates a voltage utilization rate using the input voltage of an inverter included in the high-voltage circuit and the speed of the motor, calculates a first constant by applying the voltage utilization rate to a predetermined first arithmetic expression, and calculates the capacitor current of an electrical condenser included in the high-voltage circuit by multiplying the first constant by a motor current effective value.
    Type: Application
    Filed: August 15, 2018
    Publication date: May 27, 2021
    Applicant: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
    Inventors: Makoto HATTORI, Hiroyuki KAMITANI, Hiroto HIGUCHI, Masahiro MORI, Kyohei WATANABE
  • Publication number: 20210139929
    Abstract: This invention is intended to evaluate smut resistance with higher accuracy using a marker associated with sugarcane smut resistance, which consists of a continuous nucleic acid region existing in a region between the nucleotide sequence as shown in SEQ ID NO: 1 and the nucleotide sequence as shown in SEQ ID NO: 6, a region between the nucleotide sequence as shown in SEQ ID NO: 135 and the nucleotide sequence as shown in SEQ ID NO: 143, or a region between the nucleotide sequence as shown in SEQ ID NO: 144 or 145 and the nucleotide sequence as shown in SEQ ID NO: 151 of a sugarcane chromosome.
    Type: Application
    Filed: July 2, 2019
    Publication date: May 13, 2021
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masaaki MORI, Tatsuro KIMURA, Hiroyuki ENOKI, Yusuke UETA, Takeo SAKAIGAICHI, Yuke TARUMOTO, Minoru TANAKA, katsuki ADACHI, Taichiro HATTORI, Makoto UMEDA, Michiko HAYANO
  • Publication number: 20210143714
    Abstract: A rotary electric machine includes: a rotary shaft member; first and second rotor including first and second rotor core, respectively, including first and second permanent magnets having first and second polarity, first and second magnet-based magnetic pole portions having the first and the second polarities and being formed by the first and the second permanent magnets, and first and second iron core portions having the second and the first polarities and being formed by iron pole portions of the first and the second rotor core, are alternately arranged in a circumferential direction of the first rotor core; a stator; and a field yoke. Further, the first magnet-based magnetic pole portion and the second iron pole portion face each other and the first iron pole portion and the second magnet-based magnetic pole portion face each other in the axial direction.
    Type: Application
    Filed: October 19, 2020
    Publication date: May 13, 2021
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hiroyuki HATTORI
  • Publication number: 20210104926
    Abstract: A rotating electric machine includes: a rotary shaft member; a rotor including an annular rotor core having magnet housing holes; a stator including an annular stator core and a stator coil; a field yoke; and a field coil provided in the field yoke. Further, a bridge portion is provided between two magnet housing holes, an end surface in an axial direction at one end in a radial direction of the field yoke and an end surface in the axial direction of the bridge portion face each other in the axial direction, and an end surface in the axial direction at another end in the radial direction of the field yoke, and an end surface in the axial direction of the rotor core or an end surface in the axial direction of the stator core face each other in the axial direction.
    Type: Application
    Filed: July 27, 2020
    Publication date: April 8, 2021
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hiroyuki HATTORI
  • Patent number: 10910891
    Abstract: An electric motor includes: a rotary shaft member rotating about an axis; a rotor including a rotor core and a magnet, the rotor core being provided on the rotary shaft member, the magnet being provided on the rotor core; and a stator including a stator core and a stator coil, the stator core having a plurality of slots formed in a circumferential direction, the stator core being disposed at an interval in a radial direction that is a direction orthogonal to an axial direction of the rotary shaft member with respect to the rotor core, the stator coil being inserted into the plurality of slots and wound around the stator core. Further, the stator coil includes a first conductor and a second conductor having a conductivity greater than a conductivity of the first conductor, and the second conductor is disposed in the slots.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: February 2, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hiroyuki Hattori
  • Patent number: 10879778
    Abstract: A rotor for a rotating electric machine includes: a rotor core having magnet holes; magnets inserted in the magnet holes of the rotor core. Each of the magnets includes two first surfaces respectively facing outward and inward of the rotor radial direction, and two second surfaces respectively facing one side and the other side of the rotor circumferential direction. Both ends in the rotor axial direction of at least one first surface of the two first surfaces are covered with electric insulating films, and a lateral surface region between both ends of the one first surface that are covered with the electric insulating films, and the two second surfaces are covered with no electric insulating films.
    Type: Grant
    Filed: August 9, 2018
    Date of Patent: December 29, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Suguru Gangi, Hiroyuki Hattori, Shinya Sano, Ken Noda
  • Patent number: 10873226
    Abstract: A rotary electric machine includes an annular stator, an inner rotor, an outer rotor and a toroidal coil. The annular stator includes inner teeth protruding radially inward and outer teeth protruding radially outward. The inner rotor faces a radially inner side of the annular stator. The outer rotor faces a radially outer side of the annular stator. The toroidal coils are arranged in each inner slot between any adjacent two of the inner teeth and a corresponding one outer slot between adjacent two of the outer teeth. The total number of the plurality of outer slots is larger than the total number of the plurality of inner slots. The number of the coils arranged in all the outer slots is larger than or equal to the number of the coils arranged in all the inner slots.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: December 22, 2020
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Masafumi Namba, Shinya Urata, Hideo Nakai, Hiroyuki Hattori, Shinji Wakamatsu
  • Patent number: 10868453
    Abstract: The rotor of the rotating electric machine includes the rotor shaft and the rotor core. The rotor shaft has the shaft refrigerant passage and the refrigerant supplying port on the outer peripheral surface of the rotor shaft, the shaft refrigerant passage extending in an axial direction, the refrigerant supplying port communicating with the shaft refrigerant passage. The rotor core has the rotor core refrigerant passage and the refrigerant receiving port on the inner peripheral surface of the rotor core, the rotor core refrigerant passage extending in the axial direction, the refrigerant receiving port communicating with the rotor core refrigerant passage and facing the refrigerant supplying port of the rotor shaft. A clearance groove part is provided at a portion that is on the inner peripheral surface of the rotor core and that faces the refrigerant supplying port of the rotor shaft, the clearance groove part extending in the axial direction.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: December 15, 2020
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN AW CO., LTD.
    Inventors: Ken Noda, Shinya Sano, Hiroyuki Hattori, Masayuki Ikemoto
  • Patent number: 10742085
    Abstract: The rotor of the rotating electric machine includes the rotor shaft and the rotor core. The rotor shaft has the shaft refrigerant passage and the refrigerant supplying port on the outer peripheral surface of the rotor shaft, the shaft refrigerant passage extending in an axial direction, the refrigerant supplying port communicating with the shaft refrigerant passage. The rotor core has the rotor core refrigerant passage and the refrigerant receiving port on the inner peripheral surface of the rotor core, the rotor core refrigerant passage extending in the axial direction, the refrigerant receiving port communicating with the rotor core refrigerant passage and facing the refrigerant supplying port of the rotor shaft. A clearance groove part is provided at a portion that is on the inner peripheral surface of the rotor core and that faces the refrigerant supplying port of the rotor shaft, the clearance groove part extending in the axial direction.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: August 11, 2020
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN AW CO., LTD.
    Inventors: Ken Noda, Shinya Sano, Hiroyuki Hattori, Masayuki Ikemoto
  • Patent number: 10720799
    Abstract: A stator is for a rotary electric machine. The stator includes a stator core includes a stator yoke having an annular shape, teeth being projected to an inner diameter side from the stator yoke, coils wound around the teeth, and a reinforcing member. The reinforcing member has a ring shape, and fixed to an axial end surface at a tip of each of the teeth. The tip is a portion on the inner diameter side of an arrangement range of the coil. The reinforcing member is a non-magnetic body.
    Type: Grant
    Filed: August 16, 2016
    Date of Patent: July 21, 2020
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiroyuki Hattori, Takeshi Tomonaga
  • Patent number: 10707709
    Abstract: A rotor includes a rotor core that is formed by stacking a plurality of steel plates each of which has an opening; a magnet that is inserted in a magnet hole formed by disposing the openings such that the openings overlap each other; and a magnetic plate that is disposed between an inner wall defining the magnet hole and the magnet so as to prevent contact between the inner wall defining the magnet hole and the magnet. At least a contact portion of the magnetic plate is subjected to an insulating process, the contact portion of the magnetic plate contacting the magnet.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: July 7, 2020
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiroyuki Hattori, Ken Noda
  • Patent number: 10686341
    Abstract: A rotor of a rotating electric machine includes a rotor core, and a plurality of permanent magnets arranged in a two-layer structure having a first layer and a second layer, in the rotor core. Among the permanent magnets, first and second outermost permanent magnets located closest to each of opposite q-axes of each magnetic pole are located relative to each other, such that a radial position of an end portion on a q-axis side and a radially inner side in the first outermost permanent magnet that belongs to the first layer is spaced by a predetermined radial spacing from and is on a radially outer side of a radial position of an end portion on the q-axis side and a radially outer side in the second outermost permanent magnet that belongs to the second layer.
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: June 16, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shinya Sano, Hiroyuki Hattori, Yasuhide Yagyu, Takanori Kadota
  • Publication number: 20200091798
    Abstract: An electric motor system includes a first electric motor including a first rotor, a first stator, and a first coil provided in the first stator, a second electric motor including a second rotor, a second stator and a second coil provided in the second stator and spaced apart from the first electric motor, and a heat conduction member disposed so as to extend between the first coil of the first electric motor and the second coil of the second electric motor.
    Type: Application
    Filed: July 16, 2019
    Publication date: March 19, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hiroyuki HATTORI
  • Patent number: 10581305
    Abstract: An insulator for insulating a coil that is wound around a tooth of a stator core from the stator core includes: an axial wall that opposes an axial end surface of the tooth in a state of being assembled to the tooth; and a circumferential wall that is integrally provided with the axial wall and opposes a circumferential-side surface of the tooth. The circumferential wall that is located between the tooth and the coil is constructed of an insulating sheet that is thinner than the axial wall and has foamability.
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: March 3, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hiroyuki Hattori
  • Publication number: 20200044495
    Abstract: An electric motor includes: a rotary shaft member rotating about an axis; a rotor including a rotor core and a magnet, the rotor core being provided on the rotary shaft member, the magnet being provided on the rotor core; and a stator including a stator core and a stator coil, the stator core having a plurality of slots formed in a circumferential direction, the stator core being disposed at an interval in a radial direction that is a direction orthogonal to an axial direction of the rotary shaft member with respect to the rotor core, the stator coil being inserted into the plurality of slots and wound around the stator core. Further, the stator coil includes a first conductor and a second conductor having a conductivity greater than a conductivity of the first conductor, and the second conductor is disposed in the slots.
    Type: Application
    Filed: June 18, 2019
    Publication date: February 6, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hiroyuki HATTORI
  • Publication number: 20200044496
    Abstract: An electric motor includes: a rotary shaft member rotating about an axis; a rotor including a rotor core, which has an annular shape and is provided on the rotary shaft member, and a magnet provided on the rotor core; a stator including a stator core, which has an annular shape and is disposed at an interval from the rotor core in a radial direction that is a direction orthogonal to an axial direction of the rotary shaft member, and a stator coil wound around the stator core; a field yoke, which has an annular shape, includes the rotor and the staorm, and has a fixed relative positional relationship with the stator core; and a case member, which has a side wall extending in the axial direction to face an outer peripheral surface of the field yoke, the field yoke being fixed to the case member.
    Type: Application
    Filed: July 17, 2019
    Publication date: February 6, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroyuki HATTORI, Takeshi KITAYAMA
  • Patent number: 10536061
    Abstract: A method for manufacturing a stator of a rotary electric machine includes: assembling an insulator and a stator coil to a tooth; and after assembling, pouring a liquid adhesive into an opening of the insulator from an outer side of the stator coil so as to fix the stator coil to a stator core.
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: January 14, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yukio Tsuchiya, Hiroyuki Hattori
  • Patent number: 10530205
    Abstract: A rotary electric machine includes a stator and a rotor. The rotor includes a rotor core and a plurality of permanent magnets. The permanent magnets are disposed to be divided into two layers, the two layers being a layer on the outer peripheral side and a layer on the inner peripheral side of the rotor core, and the permanent magnets are disposed line-symmetrically with respect to a magnetic pole center of the rotor core and in a V-shape or a U-shape in each of the two layers. An angle that each of the permanent magnets disposed on the outer peripheral side makes with the magnetic pole center of the V-shape or the U-shape is larger than an angle that each of the permanent magnets disposed on the inner peripheral side makes with the magnetic pole center of the V-shape or the U-shape.
    Type: Grant
    Filed: November 2, 2017
    Date of Patent: January 7, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hiroyuki Hattori
  • Patent number: 10511200
    Abstract: A stator for a electric motor, the stator including: a stator core including a yoke having an annular shape, and a plurality of teeth protruding from an inner circumferential surface of the yoke in a stator radial direction; a stator coil wound around the teeth, the stator coil being configured to generate a rotating magnetic field as a current is applied thereto; and a cancel coil extending in a stator axial direction at positions on the inner circumferential side and the outer circumferential side relative to the yoke, the cancel coil being wound around the stator core so as to extend in the stator radial direction and traverse the yoke at positions outside the stator core in the stator axial direction, and constituting one or more closed circuits.
    Type: Grant
    Filed: January 11, 2017
    Date of Patent: December 17, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hirofumi Kinjo, Masahito Shirahase, Toru Wakimoto, Takeshi Tomonaga, Hiroyuki Hattori