Patents by Inventor Naoki Marukawa

Naoki Marukawa 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: 10994600
    Abstract: A front compartment is provided with an engine, an air cleaner, a radiator, a reservoir tank, a motor unit, an auxiliary battery, and an EFI-ECU. The engine, the reservoir tank, the motor unit and the EFI-ECU are aligned in a vehicle's width direction. The air cleaner and the auxiliary battery are also aligned in the vehicle's width direction. The air cleaner is located in front of the motor unit. The motor unit includes a power control unit and a transaxle. The air cleaner is located in front of the power control unit. The auxiliary battery is located diagonally forward to left of the motor unit.
    Type: Grant
    Filed: October 3, 2019
    Date of Patent: May 4, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Naoki Marukawa, Shuichi Iwata, Hiroshi Yaguchi, Naoyuki Kishimoto
  • Publication number: 20210059062
    Abstract: A power control unit is disposed on a transaxle case and includes: a plurality of semiconductor devices; an electronic circuit board including a soldered portion for attaching the plurality of semiconductor devices; and a PCU case formed to house the plurality of semiconductor devices and the electronic circuit board. The PCU case includes a support member to which the plurality of semiconductor devices are attached, and an upper cover forming at least a part of an upper surface of the PCU case. The upper cover includes a first component and one or more second components having a lower rigidity than the first component. The electronic circuit board is attached to the first component. The soldered portion is arranged on a surface of the electronic circuit board on the upper cover side. At least one of the one or more second components is arranged to cover the soldered portion.
    Type: Application
    Filed: June 25, 2020
    Publication date: February 25, 2021
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Naoki MARUKAWA
  • Publication number: 20200161993
    Abstract: A vehicle driving device includes a case that accommodates therein a first rotary electric machine and a second rotary electric machine arranged with rotation axes thereof parallel to each other and radially adjacent to each other, and a power control device that controls electric power supplied to the first rotary electric machine and the second rotary electric machine. In the power control device, a control board, a power card and a cooler, a reactor and a capacitor, and a water jacket are disposed in order from top in a height direction.
    Type: Application
    Filed: November 13, 2019
    Publication date: May 21, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Naoyuki KISHIMOTO, Hiroshi Yaguchi, Shuichi Iwata, Naoki Marukawa, Hirotaka Koyanagi
  • Publication number: 20200156456
    Abstract: A front compartment is provided with an engine, an air cleaner, a radiator, a reservoir tank, a motor unit, an auxiliary battery, and an EFI-ECU. The engine, the reservoir tank, the motor unit and the EFI-ECU are aligned in a vehicle's width direction. The air cleaner and the auxiliary battery are also aligned in the vehicle's width direction. The air cleaner is located in front of the motor unit. The motor unit includes a power control unit and a transaxle. The air cleaner is located in front of the power control unit. The auxiliary battery is located diagonally forward to left of the motor unit.
    Type: Application
    Filed: October 3, 2019
    Publication date: May 21, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Naoki MARUKAWA, Shuichi IWATA, Hiroshi YAGUCHI, Naoyuki KISHIMOTO
  • Publication number: 20200156454
    Abstract: A vehicle drive system includes: a case accommodating a first rotary electric machine and a second rotary electric machine that are arranged to have respective rotational axes parallel to each other and to be radially adjacent to each other; and a power control device configured to control the first rotary electric machine and the second rotary electric machine. The case includes a peripheral wall portion surrounding the first rotary electric machine and the second rotary electric machine, and the power control device is mounted in a mounting section provided on an outer peripheral surface of the peripheral wall portion. A lower part of the power control device is located in a space surrounded by a line connecting a first cross point, and a second cross point, the first rotary electric machine and the second rotary electric machine.
    Type: Application
    Filed: November 13, 2019
    Publication date: May 21, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroshi YAGUCHI, Naoyuki Kishimoto, Naoki Marukawa, Shuichi Iwata
  • Publication number: 20190359068
    Abstract: A structure of mounting a power converter in a vehicle is disclosed herein. The structure may include a converter casing of the power converter, the converter casing including legs connected to the converter casing and extending downward; and a motor housing that houses a traction motor. The legs may be integrally configured with the converter casing. Lower ends of the legs may be fixed to an upper portion of the motor housing with a space provided between the motor housing and a lower surface of the converter casing. A weak portion may be provided in at least one of the legs, and the weak portion may be configured to break or deform prior to break of fixed portions between the legs and the motor housing when crash load is applied to the converter casing.
    Type: Application
    Filed: April 19, 2019
    Publication date: November 28, 2019
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Naoki MARUKAWA, Kenshi YAMANAKA
  • Patent number: 10259339
    Abstract: A structure of mounting a power control device in a vehicle includes a housing that houses an electric motor for running, a power control device fixed above the housing with a gap between the power control device and the housing, and a cable connection portion provided on an upper surface of the housing at a position facing the power control device. A head of a bolt may be exposed on a lower portion of a casing of the power control device at a position facing the cable connection portion and a rib may be provided on the lower portion of the casing next to the head of the bolt, the rib protruding lower than the head of the bolt.
    Type: Grant
    Filed: October 17, 2018
    Date of Patent: April 16, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shinichi Miura, Naoki Marukawa