Patents by Inventor Takaya Ishii

Takaya Ishii 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: 11167767
    Abstract: An object is to reduce a current detection error of a current sensor while suppressing upsizing of a power conversion device equipped with the current sensor. A power conversion device includes a power conversion circuit; a conductor to transmit current to the circuit; and a coreless current sensor to detect the current. The coreless current sensor includes: a magnetic field detection portion; and a shield portion facing the magnetic field detection portion. The conductor includes: a first conductor portion that passes through a space between the magnetic field detection portion and shield portion; and a second conductor portion connected to the first conductor portion via a first bent portion, and the first bent portion is formed such that the space between the magnetic field detection portion and shield portion is not disposed in a direction perpendicular to a face of the second conductor portion closest to the shield portion.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: November 9, 2021
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Takaya Ishii, Masahito Mitsuhashi
  • Publication number: 20190344801
    Abstract: An object is to reduce a current detection error of a current sensor while suppressing upsizing of a power conversion device equipped with the current sensor. A power conversion device includes a power conversion circuit; a conductor to transmit current to the circuit; and a coreless current sensor to detect the current. The coreless current sensor includes: a magnetic field detection portion; and a shield portion facing the magnetic field detection portion. The conductor includes: a first conductor portion that passes through a space between the magnetic field detection portion and shield portion; and a second conductor portion connected to the first conductor portion via a first bent portion, and the first bent portion is formed such that the space between the magnetic field detection portion and shield portion is not disposed in a direction perpendicular to a face of the second conductor portion closest to the shield portion.
    Type: Application
    Filed: February 21, 2018
    Publication date: November 14, 2019
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Takaya ISHII, Masahito MITSUHASHI
  • Patent number: 9859810
    Abstract: A power converter (30) comprising components of a power converter circuit, the components including switching elements (31 to 36), smoothing capacitors (37 to 39), and circuit boards (66 and 67) on which drive circuit parts for driving the switching elements are mounted, wherein the components are housed in a case (65), input power is converted and output through high-voltage terminals (69 to 79), and the high-voltage terminals (69 to 79) and the circuit boards (66 and 67) are provided in a common plane area (E).
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: January 2, 2018
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Nobuaki Yokoyama, Kazuhiro Hayakawa, Takaya Ishii
  • Publication number: 20160294301
    Abstract: A power converter (30) comprising components of a power converter circuit, the components including switching elements (31 to 36), smoothing capacitors (37 to 39), and circuit boards (66 and 67) on which drive circuit parts for driving the switching elements are mounted, wherein the components are housed in a case (65), input power is converted and output through high-voltage terminals (69 to 79), and the high-voltage terminals (69 to 79) and the circuit boards (66 and 67) are provided in a common plane area (E).
    Type: Application
    Filed: August 7, 2014
    Publication date: October 6, 2016
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Nobuaki YOKOYAMA, Kazuhiro HAYAKAWA, Takaya ISHII
  • Patent number: 9260020
    Abstract: A power converter configured to be mounted on an electrically driven vehicle comprises a control board that controls a power module including a semiconductor device, a connector provided on the control board so as to be connected to an external controller, a strong electric component arranged so as to overlap the control board, and a housing that houses the control board and the strong electric component. A bottom portion of the housing is formed to swell in a convex-shaped manner, a part of the strong electric component is housed in an area of the housing that swells in the convex-shaped manner, and the strong electric component is formed so that a projection area thereof to the overlappingly arranged control board is smaller than a surface area of the control board. The connector is arranged in an area of the control board broader than a projection plane of the overlappingly arranged strong electric component to the control board.
    Type: Grant
    Filed: July 19, 2013
    Date of Patent: February 16, 2016
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Takaya Ishii, Nobuaki Yokoyama
  • Patent number: 9247677
    Abstract: An electronic component casing includes: an inclined portion that projects from an upper surface so as to increase in height gradually from one side; a step portion that descends as a continuation of an upper end of the inclined portion or descends via a plane connected to the upper end; and a planar portion connected to a lower end of the step portion.
    Type: Grant
    Filed: April 20, 2011
    Date of Patent: January 26, 2016
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Mikio Naruse, Takaya Ishii
  • Publication number: 20150231975
    Abstract: A power converter configured to be mounted on an electrically driven vehicle comprises a control board that controls a power module including a semiconductor device, a connector provided on the control board so as to be connected to an external controller, a strong electric component arranged so as to overlap the control board, and a housing that houses the control board and the strong electric component. A bottom portion of the housing is formed to swell in a convex-shaped manner, a part of the strong electric component is housed in an area of the housing that swells in the convex-shaped manner, and the strong electric component is formed so that a projection area thereof to the overlappingly arranged control board is smaller than a surface area of the control board. The connector is arranged in an area of the control board broader than a projection plane of the overlappingly arranged strong electric component to the control board.
    Type: Application
    Filed: July 19, 2013
    Publication date: August 20, 2015
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Takaya Ishii, Nobuaki Yokoyama
  • Publication number: 20130063880
    Abstract: An electronic component casing includes: an inclined portion that projects from an upper surface so as to increase in height gradually from one side; a step portion that descends as a continuation of an upper end of the inclined portion or descends via a plane connected to the upper end; and a planar portion connected to a lower end of the step portion.
    Type: Application
    Filed: April 20, 2011
    Publication date: March 14, 2013
    Inventors: Mikio Naruse, Takaya Ishii
  • Patent number: 5843293
    Abstract: The arc-type evaporator of the present invention includes an anode and a cathode for generating arc discharging, a trigger electrode and a gas supply pipe. The trigger electrode is contacted with the cathode to cause a first spark, and thereafter is separated from the cathode to occur the arc discharge between the anode and the cathode. The gas supply pipe is provided independently of the trigger electrode, and supplies the cathode a reactive gas which reacts with a substance forming the cathode to produce a chemical compound. The gas supply pipe includes a gas blow-out port formed in the neighborhood of the side portion or rear side portion of the cathode to face the cathode. The reactive gas is supplied from the gas blow-out port to an area including the front surface of the cathode.
    Type: Grant
    Filed: January 23, 1996
    Date of Patent: December 1, 1998
    Assignee: Nissin Electric Co., Ltd.
    Inventors: Hiroshi Murakami, Tadashi Kitagawa, Haruo Hiratsuka, Takaya Ishii, Koji Okamoto, Akira Doi