Patents by Inventor Takumu HONDA

Takumu HONDA 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: 11807250
    Abstract: A control apparatus includes: a rotor temperature estimation unit estimating a temperature of a rotor based on stator temperature information from a first temperature sensor for identifying a temperature of a stator, refrigerant temperature information from a second temperature sensor for identifying a temperature of refrigerant used to cool an electric motor, and rotation speed information about the rotor from a resolver for identifying a rotation speed of the rotor; and an electric motor control unit controlling at least one of an output characteristic and a drive condition of the electric motor based on the temperature of the rotor estimated by the rotor temperature estimation unit.
    Type: Grant
    Filed: April 22, 2022
    Date of Patent: November 7, 2023
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Sho Okazaki, Takumu Honda, Toshinori Okochi, Yasutaka Tsuchida, Yoshinori Ogami, Hiroki Nakane
  • Publication number: 20220340147
    Abstract: A control apparatus includes: a rotor temperature estimation unit estimating a temperature of a rotor based on stator temperature information from a first temperature sensor for identifying a temperature of a stator, refrigerant temperature information from a second temperature sensor for identifying a temperature of refrigerant used to cool an electric motor, and rotation speed information about the rotor from a resolver for identifying a rotation speed of the rotor; and an electric motor control unit controlling at least one of an output characteristic and a drive condition of the electric motor based on the temperature of the rotor estimated by the rotor temperature estimation unit.
    Type: Application
    Filed: April 22, 2022
    Publication date: October 27, 2022
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Sho OKAZAKI, Takumu HONDA, Toshinori OKOCHI, Yasutaka TSUCHIDA, Yoshinori OGAMI, Hiroki NAKANE
  • Publication number: 20220340765
    Abstract: An aqueous white conductive primer coating composition, includes: a binder component (A); and a carbon nanotube dispersion liquid (B); and a coating film formed by the aqueous white conductive primer coating composition has an L* value of whiteness based on a CIE color-matching function of 80 or more and a surface resistivity of 108 ?/? or less.
    Type: Application
    Filed: September 16, 2020
    Publication date: October 27, 2022
    Applicants: KANSAI PAINT CO., LTD., TOYO INK SC HOLDINGS CO., LTD., TOYOCOLOR CO., LTD.
    Inventors: Takumu HONDA, Takayuki ONO, Hironori TONOMURA, Nobuyuki NAHATA
  • Patent number: 10644641
    Abstract: A vehicle drive device includes: a casing within which lubricating oil is received; a rotating electrical machine provided within the casing, and including a stator with a coil; a temperature sensor provided within the casing; and a control device that functions as: a coil temperature estimation device executing a first temperature estimation in which correlation with a detected temperature is relatively high, and a second temperature estimation in which the correlation is relatively low; a determination device determining whether or not positional relationship between the temperature sensor and oil level is in a permitted state that permits the first temperature estimation; and a limitation device limiting load factor of the rotating electrical machine based on a result of the first temperature estimation when being in the permitted state, and limiting the load factor based on a result of the second temperature estimation when not being in the permitted state.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: May 5, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takumu Honda, Shigeru Kimura, Hiroshi Inano
  • Publication number: 20190149082
    Abstract: A vehicle drive device includes: a casing within which lubricating oil is received; a rotating electrical machine provided within the casing, and including a stator with a coil; a temperature sensor provided within the casing; and a control device that functions as: a coil temperature estimation device executing a first temperature estimation in which correlation with a detected temperature is relatively high, and a second temperature estimation in which the correlation is relatively low; a determination device determining whether or not positional relationship between the temperature sensor and oil level is in a permitted state that permits the first temperature estimation; and a limitation device limiting load factor of the rotating electrical machine based on a result of the first temperature estimation when being in the permitted state, and limiting the load factor based on a result of the second temperature estimation when not being in the permitted state.
    Type: Application
    Filed: October 18, 2018
    Publication date: May 16, 2019
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takumu HONDA, Shigeru KIMURA, Hiroshi INANO