Patents by Inventor Hitoshi Imura

Hitoshi Imura 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).

  • Patent number: 11011769
    Abstract: Provided is a fuel cell catalyst layer including: a fibrous carbon material; catalyst particles; a particulate carbon material; and a proton-conductive resin, wherein a region A including at least the fibrous carbon material in a state of an agglomerated body and a region B including at least the catalyst particles, the particulate carbon material, and the proton-conductive resin are formed, the region A being disposed in an island form in the region B.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: May 18, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Motohiro Sakata, Takeshi Minamiura, Shinichiro Imura, Hitoshi Ishimoto, Kazuya Yamasaki, Chiho Nobumori, Yukihiro Shimasaki, Tsutomu Fujii
  • Patent number: 10677348
    Abstract: An electric vehicle includes: a motor for traveling; a transmission connected to the motor; a battery; an inverter configured to convert direct-current power output by the battery, into alternating-current power for driving the motor; a capacitor connected between a positive electrode of direct-current input terminals of the inverter and a negative electrode of the direct-current input terminals of the inverter; and a controller configured to change a gear stage of the transmission when both of a condition i) and a condition ii) are satisfied. The condition i) is a condition that the rotation speed of the motor is in a predetermined range. The condition ii) is a condition that the output of the motor exceeds a predetermined output threshold.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: June 9, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuki Jojima, Hitoshi Imura, Tomoo Yamabuki
  • Patent number: 10660229
    Abstract: An electrical device is provided. The electrical device includes a case, a first electrical part, a second electrical part, and a connecting portion. The case includes a first case and a second case coupled to the first case. The first electrical part is fixed to the first case. The second electrical part is fixed to the second case. The connecting portion is configured to connect a first conductor extending from the first electrical part and a second conductor extending from the second electrical part each other. Either one of the first case and the second case includes a through hole. The connecting portion is disposed so as to be entirely visible from the through hole as viewed from an outside of the case.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: May 19, 2020
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION
    Inventors: Hiroki Umeda, Kenshi Yamanaka, Shinichi Miura, Hiromi Yamasaki, Hitoshi Imura, Yutaka Morimoto, Kazuki Hayashi, Hideaki Tachibana, Yoshiki Kawaguchi
  • Patent number: 10471842
    Abstract: An on-vehicle structure of a power converter includes a housing of the power converter mounted on a vehicle, a structure mounted on the vehicle, and a high-voltage connector attached to the housing. The high-voltage connector is configured to apply a voltage exceeding a predetermined threshold voltage, the high-voltage connector is positioned between the housing and the structure such that the high-voltage connector faces the structure in a removal direction of the high-voltage connector when the high-voltage connector is attached to the housing, and in a state where the high-voltage connector is attached to the housing, a length of a portion of the high-voltage connector embedded in the housing is determined so as to be longer than a distance between the high-voltage connector and the structure.
    Type: Grant
    Filed: September 24, 2018
    Date of Patent: November 12, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Keisuke Sawazaki, Kenshi Yamanaka, Hiromi Yamasaki, Hitoshi Imura, Akira Saito
  • Patent number: 10434884
    Abstract: A vehicle includes a motor housing accommodating motors for driving wheels, and a power control unit fixed on the motor housing. The power control unit includes: a stacked unit in which multiple power modules accommodating power semiconductor elements for electric power conversion and multiple coolers are stacked; and reactors. The stacked unit is disposed in the case of the power control unit such that the stacking direction of the power modules and the coolers is directed toward the vehicle-longitudinal direction. The reactors are disposed in the case so as not to overlap with the stacked unit as viewed from the stacking direction.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: October 8, 2019
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION
    Inventors: Keisuke Sawazaki, Kenshi Yamanaka, Ryusuke Baba, Hiromi Yamasaki, Hitoshi Imura, Hideaki Tachibana
  • Patent number: 10396668
    Abstract: A power converter disclosed herein may include power conversion circuits connected in parallel and a cutoff switch provided in each of the power conversion circuits. The cutoff switch may be configured to cut off connection of corresponding one of the power conversion circuits from other power conversion circuit. In the power converter disclosed herein, the cutoff switches of the power conversion circuits may be housed in a first module.
    Type: Grant
    Filed: January 2, 2019
    Date of Patent: August 27, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuki Jojima, Shuichi Iwata, Hiromi Yamasaki, Tomoo Yamabuki, Hitoshi Imura
  • Publication number: 20190245446
    Abstract: A power converter disclosed herein may include power conversion circuits connected in parallel and a cutoff switch provided in each of the power conversion circuits. The cutoff switch may be configured to cut off connection of corresponding one of the power conversion circuits from other power conversion circuit. In the power converter disclosed herein, the cutoff switches of the power conversion circuits may be housed in a first module.
    Type: Application
    Filed: January 2, 2019
    Publication date: August 8, 2019
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuki JOJIMA, Shuichi IWATA, Hiromi YAMASAKI, Tomoo YAMABUKI, Hitoshi IMURA
  • Patent number: 10374523
    Abstract: A power conversion device includes a case including an upper case and a lower case; an inverter that is accommodated in a first partial case and is fixed to the first partial case, the first partial case being one of the upper case and the lower case; and a capacitor that is connected to the inverter by a positive electrode bus bar and a negative electrode bus bar, the capacitor being disposed in an internal space of a second partial case that is another of the upper case and the lower case. The first partial case includes a fastening portion that extends from an internal space of the first partial case to the internal space of the second partial case. In the internal space of the second partial case, the capacitor is fastened to the fastening portion.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: August 6, 2019
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION
    Inventors: Shinichi Miura, Hiroki Umeda, Kenshi Yamanaka, Yutaka Morimoto, Kazuki Hayashi, Hiromi Yamasaki, Hitoshi Imura, Tomohisa Sano, Daisuke Harada, Hideaki Tachibana
  • Publication number: 20190195352
    Abstract: An electric vehicle includes: a motor for traveling; a transmission connected to the motor; a battery; an inverter configured to convert direct-current power output by the battery, into alternating-current power for driving the motor; a capacitor connected between a positive electrode of direct-current input terminals of the inverter and a negative electrode of the direct-current input terminals of the inverter; and a controller configured to change a gear stage of the transmission when both of a condition i) and a condition ii) are satisfied. The condition i) is a condition that the rotation speed of the motor is in a predetermined range. The condition ii) is a condition that the output of the motor exceeds a predetermined output threshold.
    Type: Application
    Filed: November 9, 2018
    Publication date: June 27, 2019
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuki JOJIMA, Hitoshi IMURA, Tomoo YAMABUKI
  • Publication number: 20190174647
    Abstract: An electrical device is provided. The electrical device includes a case, a first electrical part, a second electrical part, and a connecting portion. The case includes a first case and a second case coupled to the first case. The first electrical part is fixed to the first case. The second electrical part is fixed to the second case. The connecting portion is configured to connect a first conductor extending from the first electrical part and a second conductor extending from the second electrical part each other. Either one of the first case and the second case includes a through hole. The connecting portion is disposed so as to be entirely visible from the through hole as viewed from an outside of the case.
    Type: Application
    Filed: November 29, 2018
    Publication date: June 6, 2019
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION
    Inventors: Hiroki UMEDA, Kenshi YAMANAKA, Shinichi MIURA, Hiromi YAMASAKI, Hitoshi IMURA, Yutaka MORIMOTO, Kazuki HAYASHI, Hideaki TACHIBANA, Yoshiki KAWAGUCHI
  • Publication number: 20190173394
    Abstract: A power conversion device includes a case including an upper case and a lower case; an inverter that is accommodated in a first partial case and is fixed to the first partial case, the first partial case being one of the upper case and the lower case; and a capacitor that is connected to the inverter by a positive electrode bus bar and a negative electrode bus bar, the capacitor being disposed in an internal space of a second partial case that is another of the upper case and the lower case. The first partial case includes a fastening portion that extends from an internal space of the first partial case to the internal space of the second partial case. In the internal space of the second partial case, the capacitor is fastened to the fastening portion.
    Type: Application
    Filed: December 4, 2018
    Publication date: June 6, 2019
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION
    Inventors: Shinichi MIURA, Hiroki UMEDA, Kenshi YAMANAKA, Yutaka MORIMOTO, Kazuki HAYASHI, Hiromi YAMASAKI, Hitoshi IMURA, Tomohisa SANO, Daisuke HARADA, Hideaki TACHIBANA
  • Publication number: 20190152331
    Abstract: An on-vehicle structure of a power converter includes a housing of the power converter mounted on a vehicle, a structure mounted on the vehicle, and a high-voltage connector attached to the housing. The high-voltage connector is configured to apply a voltage exceeding a predetermined threshold voltage, the high-voltage connector is positioned between the housing and the structure such that the high-voltage connector faces the structure in a removal direction of the high-voltage connector when the high-voltage connector is attached to the housing, and in a state where the high-voltage connector is attached to the housing, a length of a portion of the high-voltage connector embedded in the housing is determined so as to be longer than a distance between the high-voltage connector and the structure.
    Type: Application
    Filed: September 24, 2018
    Publication date: May 23, 2019
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Keisuke SAWAZAKI, Kenshi YAMANAKA, Hiromi YAMASAKI, Hitoshi IMURA, Akira SAITO
  • Publication number: 20190150328
    Abstract: A power control device includes a cooling medium flow channel provided on a lower portion of a casing of the power control device; a cover attached to a lower surface of the casing with a gasket interposed between the cover and the lower surface, the gasket surrounding the cooling medium flow channel, the cover closing the cooling medium flow channel; and a groove or a protrusion provided on the lower surface at a position between the gasket and an outer edge of the lower surface.
    Type: Application
    Filed: October 1, 2018
    Publication date: May 16, 2019
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shinichi MIURA, Yutaka MORIMOTO, Hiromi YAMASAKI, Hitoshi IMURA
  • Patent number: 10205316
    Abstract: A mounting structure for a power converter in a vehicle is provided. The power converter includes a plurality of voltage converter circuits connected in parallel, and each of the plurality of voltage converter circuits includes a reactor, in which the power converter includes: a main body containing at least one of the reactors and a switching device of the voltage converter circuits; and a sub-body containing remaining reactors, the sub-body being electrically connected to the main body by a cable. The main body is fixed to a vehicle body via a bracket in a front compartment such that a gap is provided below the main body, and the sub-body is connected to a lateral side of the main body in a vehicle width direction such that a front end of the sub-body aligns with a front end of the main body.
    Type: Grant
    Filed: September 6, 2018
    Date of Patent: February 12, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuki Jojima, Shuichi Iwata, Hiromi Yamasaki, Tomoo Yamabuki, Hitoshi Imura
  • Publication number: 20180281605
    Abstract: A vehicle includes a motor housing accommodating motors for driving wheels, and a power control unit fixed on the motor housing. The power control unit includes: a stacked unit in which multiple power modules accommodating power semiconductor elements for electric power conversion and multiple coolers are stacked; and reactors. The stacked unit is disposed in the case of the power control unit such that the stacking direction of the power modules and the coolers is directed toward the vehicle-longitudinal direction. The reactors are disposed in the case so as not to overlap with the stacked unit as viewed from the stacking direction.
    Type: Application
    Filed: March 29, 2018
    Publication date: October 4, 2018
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION
    Inventors: Keisuke SAWAZAKI, Kenshi YAMANAKA, Ryusuke BABA, Hiromi YAMASAKI, Hitoshi IMURA, Hideaki TACHIBANA
  • Publication number: 20150229206
    Abstract: An electrical power converter is configured to perform an electrical power conversion with two electricity storage apparatuses, the electrical power converter has: four switching elements which are electrically connected in series and which are housed in the electrical power converter such that the four switching elements are located at four corners of a planar quadrangular region respectively; a first conductive path which electrically connects a first and second switching elements among the four switching elements; and a second conductive path which electrically connects a third and fourth switching elements among the four switching elements, wherein the second conductive path intersects with the first conductive path in a planar view.
    Type: Application
    Filed: February 10, 2015
    Publication date: August 13, 2015
    Inventors: Masaya KAJI, Hitoshi IMURA, Hiromi YAMASAKI, Masanori ISHIGAKI, Naoki YANAGIZAWA, Shuji TOMURA
  • Patent number: 9105597
    Abstract: An electric power converter that can easily be assembled is provided. An electric power converter includes a semiconductor stacking unit, a frame and a spring unit. The semiconductor stacking unit has a configuration in which the semiconductor modules and coolers are stacked. The spring unit is inserted between one end of the semiconductor stacking unit in a stacking direction, and a support provided on the frame, and fixes the semiconductor stacking unit while applying pressure thereto. The spring unit is provided with a first plate, a second plate, and a coil spring sandwiched between the first and second plates. A recess is provided in the first plate so as to have a gap between the first plate and the end surface of the semiconductor stacking unit. A penetrating passage through which the entire spring unit passes along a bottom of the recess is provided in the spring unit.
    Type: Grant
    Filed: January 23, 2012
    Date of Patent: August 11, 2015
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ryouji Hironaka, Hitoshi Imura
  • Publication number: 20150123261
    Abstract: An electric power converter that can easily be assembled is provided. An electric power converter includes a semiconductor stacking unit, a frame and a spring unit. The semiconductor stacking unit has a configuration in which the semiconductor modules and coolers are stacked. The spring unit is inserted between one end of the semiconductor stacking unit in a stacking direction, and a support provided on the frame, and fixes the semiconductor stacking unit while applying pressure thereto. The spring unit is provided with a first plate, a second plate, and a coil spring sandwiched between the first and second plates. A recess is provided in the first plate so as to have a gap between the first plate and the end surface of the semiconductor stacking unit. A penetrating passage through which the entire spring unit passes along a bottom of the recess is provided in the spring unit.
    Type: Application
    Filed: January 23, 2012
    Publication date: May 7, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ryouji Hironaka, Hitoshi Imura
  • Publication number: 20140198450
    Abstract: A power conversion device includes a laminated unit, a reactor, a shield, and coolant passages. In the laminated unit, flat-plate semiconductor modules housing semiconductor elements and flat-plate cooling plates are laminated. The shield is interposed between the reactor and electronic components. The coolant passages supply coolant to or discharge coolant from the laminated unit. The coolant passages pass through an interior of the shield.
    Type: Application
    Filed: January 14, 2014
    Publication date: July 17, 2014
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ryusuke BABA, Yutaka MORIMOTO, Hitoshi IMURA
  • Patent number: 8258400
    Abstract: A storage case (300) includes a case body (320) formed by joining a plurality of members (301, 302) with a joint structure (303a, 303b, 304), an opening (16) formed in the case body (320), a closure member (14) capable of closing the opening (16), a seal structure (17) provided between the case body (320) and the closure member (14), and a foreign-matter guide portion (10) provided on an outer surface of the case body (320), aside from the joint structure (303a, 303b, 304), such that the foreign-matter guide portion is located above the seal structure in the vertical direction of the storage case.
    Type: Grant
    Filed: April 18, 2007
    Date of Patent: September 4, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yukari Inoue, Hitoshi Imura