Patents by Inventor Motonobu Funato

Motonobu Funato 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: 11661944
    Abstract: An electric compressor includes a compression portion, an electric motor, a drive circuit that has a circuit board on which electronic components are mounted, a housing, and a resin member. At least one of the electronic components is held by the resin member with the resin member sandwiched between the at least one of the electronic component and the circuit board. The electronic compressor includes a first metal member that is in contact with the at least one of the electronic components, and thermally connected to the housing, a second metal member that is disposed in the resin member, and a bolt by which the first metal member and the second metal member are fastened with each other.
    Type: Grant
    Filed: December 17, 2020
    Date of Patent: May 30, 2023
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Motonobu Funato, Mikio Yoshida, Kenji Hayakawa, Yusuke Kinoshita
  • Patent number: 11418115
    Abstract: A controller for an on-vehicle inverter includes an arm circuit and a driver. The driver includes a high-side drive circuit, a low-side drive circuit, and a bootstrap capacitor. The on-vehicle inverter includes a smoothing capacitor. The smoothing capacitor is supplied with leak current by an internal power supply via the bootstrap capacitor and a high-side semiconductor device. The controller further includes a voltage detector and an insertion-removal determination unit. The insertion-removal determination unit is configured to determine whether a connector has been inserted or removed from a change in voltage at ends of a smoothing capacitor detected by a voltage detector.
    Type: Grant
    Filed: January 29, 2021
    Date of Patent: August 16, 2022
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Motonobu Funato, Keiji Yashiro, Kazuhiro Shiraishi
  • Publication number: 20210249959
    Abstract: A controller for an on-vehicle inverter includes an arm circuit and a driver. The driver includes a high-side drive circuit, a low-side drive circuit, and a bootstrap capacitor. The on-vehicle inverter includes a smoothing capacitor. The smoothing capacitor is supplied with leak current by an internal power supply via the bootstrap capacitor and a high-side semiconductor device. The controller further includes a voltage detector and an insertion-removal determination unit. The insertion-removal determination unit is configured to determine whether a connector has been inserted or removed from a change in voltage at ends of a smoothing capacitor detected by a voltage detector.
    Type: Application
    Filed: January 29, 2021
    Publication date: August 12, 2021
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Motonobu FUNATO, Keiji YASHIRO, Kazuhiro SHIRAISHI
  • Publication number: 20210199117
    Abstract: An electric compressor includes a compression portion, an electric motor, a drive circuit that has a circuit board on which electronic components are mounted, a housing, and a resin member. At least one of the electronic components is held by the resin member with the resin member sandwiched between the at least one of the electronic component and the circuit board. The electronic compressor includes a first metal member that is in contact with the at least one of the electronic components, and thermally connected to the housing, a second metal member that is disposed in the resin member, and a bolt by which the first metal member and the second metal member are fastened with each other.
    Type: Application
    Filed: December 17, 2020
    Publication date: July 1, 2021
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Motonobu FUNATO, Mikio YOSHIDA, Kenji HAYAKAWA, Yusuke KINOSHITA
  • Patent number: 8834131
    Abstract: A motor controller for a motor-driven compressor includes a compressing body for compressing and discharging a refrigerant and a motor including a rotary shaft, the motor for driving the compressing body through the rotary shaft. A coil of the motor is arranged in a refrigerant containing area in the motor-driven compressor. The motor controller includes a determining section for determining whether liquid refrigerant is present in the refrigerant containing area and a modulation control section for driving the motor in accordance with three phase modulation control or two phase modulation control based on a determination result of the determining section.
    Type: Grant
    Filed: October 24, 2011
    Date of Patent: September 16, 2014
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Takashi Kawashima, Kazuki Najima, Fumihiro Kagawa, Motonobu Funato
  • Publication number: 20120107141
    Abstract: A motor controller for a motor-driven compressor includes a compressing body for compressing and discharging a refrigerant and a motor including a rotary shaft, the motor for driving the compressing body through the rotary shaft. A coil of the motor is arranged in a refrigerant containing area in the motor-driven compressor. The motor controller includes a determining section for determining whether liquid refrigerant is present in the refrigerant containing area and a modulation control section for driving the motor in accordance with three phase modulation control or two phase modulation control based on a determination result of the determining section.
    Type: Application
    Filed: October 24, 2011
    Publication date: May 3, 2012
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Takashi KAWASHIMA, Kazuki NAJIMA, Fumihiro KAGAWA, Motonobu FUNATO
  • Patent number: 7202618
    Abstract: The control device records, in advance, a current data table which specifies relationships between currents in respective phases in a three-phase motor and rotation angles of a rotor of the three-phase motor, obtains, from the current data table, a rotation angle of the rotor of the three-phase motor corresponding to a current in each phase in the three-phase motor detected by a current sensor before driving of the three-phase motor, and obtains an initial position of the rotor.
    Type: Grant
    Filed: December 5, 2005
    Date of Patent: April 10, 2007
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Akira Ide, Kazuki Najima, Motonobu Funato, Shinya Sato, Takashi Kawashima
  • Publication number: 20060119310
    Abstract: The control device records, in advance, a current data table which specifies relationships between currents in respective phases in a three-phase motor and rotation angles of a rotor of the three-phase motor, obtains, from the current data table, a rotation angle of the rotor of the three-phase motor corresponding to a current in each phase in the three-phase motor detected by a current sensor before driving of the three-phase motor, and obtains an initial position of the rotor.
    Type: Application
    Filed: December 5, 2005
    Publication date: June 8, 2006
    Applicant: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Akira Ide, Kazuki Najima, Motonobu Funato, Shinya Sato, Takashi Kawashima