Patents by Inventor Kazuyoshi Kontani

Kazuyoshi Kontani 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).

  • Publication number: 20190244874
    Abstract: A semiconductor apparatus includes a heat release member, a first substrate that is fixed to the heat release member and on which a semiconductor device is mounted, a second substrate that is spaced from the first substrate in a thickness direction of the first substrate and on which an electronic component is mounted, and a bracket that fixes the second substrate to the heat release member. An electrically non-conductive heat transfer member is disposed between the second substrate and the bracket for transferring heat from the second substrate to the bracket. The bracket is made of a metal. The bracket includes a heat transfer portion that transfers heat to the heat release member.
    Type: Application
    Filed: January 24, 2019
    Publication date: August 8, 2019
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Kaoru YOSHIKAWA, Kenichiro Ito, Kazuyoshi Kontani
  • Publication number: 20190246487
    Abstract: An inverter includes a power substrate mounting power element groups arranged apart from each other, each power element group constituted by power elements arranged, a control substrate disposed apart from the power substrate in a plate thickness direction of the power substrate and mounting an electronic component for controlling the power elements, a capacitor substrate disposed between the power substrate and the control substrate and mounting capacitors, a release member fixed to the power substrate, and a spacer electrically connecting the power substrate and the capacitor substrate. The spacer includes a body portion disposed between two adjacent power element groups of the power element groups and a heat transfer portion disposed outside the power element groups in a direction in which the power elements are arranged and provided at a position not overlapping with the capacitors as viewed in a plate thickness direction of the capacitor substrate.
    Type: Application
    Filed: January 24, 2019
    Publication date: August 8, 2019
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHIKKI
    Inventors: Kenichiro ITO, Naohito Kanie, Kazuyoshi Kontani, Takuya Higashi
  • Patent number: 10103679
    Abstract: An inverter unit includes a first temperature detector that detects a first temperature of at least one of semiconductor elements and a periphery of the semiconductor elements, current detectors that detect a current of a motor, and a controller that switches a modulation mode of the motor to a two-phase modulation mode or a three-phase modulation mode on the basis of a detection result of the first temperature by the first temperature detector and detection results of the current by the current detectors.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: October 16, 2018
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Naohito Kanie, Kazuyoshi Kontani, Naotaka Matsumoto
  • Patent number: 9756729
    Abstract: A connecting terminal includes an external terminal connecting portion, having an end surface to connect an external terminal thereto and located at a second principal surface side of a second circuit board faces, and a substrate-fixed portion which is securely connected to a first circuit board. A seal attachment portion is provided on a portion of the external terminal connecting portion including the end surface to attach thereto a seal member to seal a gap between the portion and the case. The connecting terminal includes a reduced sectional area portion having a sectional area smaller than an area of the top end surface in a region close to a plurality of electronic components arranged on the second circuit board on the external terminal connecting portion. The reduced sectional area portion is provided from the seal attachment portion to an end in the opposite side of the end surface.
    Type: Grant
    Filed: January 15, 2015
    Date of Patent: September 5, 2017
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Kazuyoshi Kontani, Atsushi Dojiri
  • Publication number: 20170187320
    Abstract: An inverter unit includes a first temperature detector that detects a first temperature of at least one of semiconductor elements and a periphery of the semiconductor elements, current detectors that detect a current of a motor, and a controller that switches a modulation mode of the motor to a two-phase modulation mode or a three-phase modulation mode on the basis of a detection result of the first temperature by the first temperature detector and detection results of the current by the current detectors.
    Type: Application
    Filed: December 19, 2016
    Publication date: June 29, 2017
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Naohito KANIE, Kazuyoshi KONTANI, Naotaka MATSUMOTO
  • Patent number: 9543281
    Abstract: A plurality of arm elements is arrayed along a first direction of a substrate. Each arm element includes a plurality of semiconductor elements connected in parallel. Each arm element is configured such that a plurality of semiconductor elements is arrayed along a second direction of the substrate which is perpendicular to the first direction and separated into a first element group and a second element group. The substrate includes a first region where the semiconductor element included in the first element group is arranged and a second region where the semiconductor element included in the second element group is arranged, and the first region and the second region are separated along the second direction. An input electrode unit and an output electrode unit are arranged along the first direction in a region provided between the first region and the second region on the substrate.
    Type: Grant
    Filed: January 15, 2015
    Date of Patent: January 10, 2017
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Kazuyoshi Kontani, Toshiaki Nagase, Naohito Kanie
  • Patent number: 9519008
    Abstract: An electronic device includes a support that is coupled to a coupled subject and includes a support portion, a substrate supported by the support portion, a current sensor including a signal terminal, wherein the current sensor is connected to the substrate in a manner allowing for a signal to be sent to the substrate through the signal terminal, and a fastener fastening the current sensor to the support portion and the substrate. The current sensor is suspended from the substrate. The support portion is arranged between the substrate and the current sensor.
    Type: Grant
    Filed: June 27, 2013
    Date of Patent: December 13, 2016
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Naoki Higashikawa, Kazuyoshi Kontani
  • Patent number: 9485865
    Abstract: A substrate spacing member includes a spacer portion which is disposed between the two substrates in contact with both edge portions thereof to keep a distance between the two substrates constant, spacer member holding portions which hold the spacer members, a frame body portion that connects the spacer member holding portions to each other, a branch portion which extends toward a predetermined position between the two substrates from the frame body portion or the spacer member holding portions, and electrode holding portions which are provided at the branch portions, and hold electrodes at the predetermined positions.
    Type: Grant
    Filed: March 20, 2014
    Date of Patent: November 1, 2016
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Naoki Higashikawa, Kazuyoshi Kontani
  • Patent number: 9385631
    Abstract: An inverter unit includes a first circuit board and a second circuit board arranged at a predetermined space so as to face each other. Each of the first circuit board and the second circuit board has a main circuit forming area. A plurality of power devices are mounted in the main circuit forming area of the first circuit board and form a main circuit. A plurality of capacitors are electrically connected to the plurality of the power devices and mounted in the main circuit forming area of the second circuit board. A control circuit controls the operation of the main circuit. The second circuit board includes a control circuit forming area separated from the main circuit forming area. The control circuit includes a first control circuit formed in the control circuit forming area of the second circuit board.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: July 5, 2016
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventor: Kazuyoshi Kontani
  • Publication number: 20150208500
    Abstract: A semiconductor device includes a terminal electrode and a terminal electrode placement member. The terminal electrode includes a substrate-fixed portion secured to the circuit substrate through a fastening member, and an external wiring connection portion to which an external wiring is connected. The terminal electrode placement member includes a plurality of securing portions which are secured to the circuit substrate, and a rotation suppressing portion configured to suppress rotations of the terminal electrode. The rotation suppressing portion is provided with a penetration hole for penetrating the substrate-fixed portion therethrough. The rotation suppressing portion includes a pair of walls which are opposed to each other and also are positioned in opposite sides beside the terminal electrode which is inserted into the penetration hole at the substrate-fixed portion. The terminal electrode comes into contact with these walls, thereby suppressing the rotation of the terminal electrode.
    Type: Application
    Filed: January 15, 2015
    Publication date: July 23, 2015
    Inventors: Kazuyoshi Kontani, Kenichiro Ito
  • Publication number: 20150208524
    Abstract: A connecting terminal includes an external terminal connecting portion, having an end surface to connect an external terminal thereto and located at a second principal surface side of a second circuit board faces, and a substrate-fixed portion which is securely connected to a first circuit board. A seal attachment portion is provided on a portion of the external terminal connecting portion including the end surface to attach thereto a seal member to seal a gap between the portion and the case. The connecting terminal includes a reduced sectional area portion having a sectional area smaller than an area of the top end surface in a region close to a plurality of electronic components arranged on the second circuit board on the external terminal connecting portion. The reduced sectional area portion is provided from the seal attachment portion to an end in the opposite side of the end surface.
    Type: Application
    Filed: January 15, 2015
    Publication date: July 23, 2015
    Inventors: Kazuyoshi Kontani, Atsushi Dojiri
  • Publication number: 20150206860
    Abstract: A plurality of arm elements is arrayed along a first direction of a substrate. Each arm element includes a plurality of semiconductor elements connected in parallel. Each arm element is configured such that a plurality of semiconductor elements is arrayed along a second direction of the substrate which is perpendicular to the first direction and separated into a first element group and a second element group. The substrate includes a first region where the semiconductor element included in the first element group is arranged and a second region where the semiconductor element included in the second element group is arranged, and the first region and the second region are separated along the second direction. An input electrode unit and an output electrode unit are arranged along the first direction in a region provided between the first region and the second region on the substrate.
    Type: Application
    Filed: January 15, 2015
    Publication date: July 23, 2015
    Inventors: Kazuyoshi Kontani, Toshiaki Nagase, Naohito Kanie
  • Publication number: 20140355324
    Abstract: An inverter unit includes a first circuit board and a second circuit board arranged at a predetermined space so as to face each other. Each of the first circuit board and the second circuit board has a main circuit forming area. A plurality of power devices are mounted in the main circuit forming area of the first circuit board and form a main circuit. A plurality of capacitors are electrically connected to the plurality of the power devices and mounted in the main circuit forming area of the second circuit board. A control circuit controls the operation of the main circuit. The second circuit board includes a control circuit forming area separated from the main circuit forming area. The control circuit includes a first control circuit formed in the control circuit forming area of the second circuit board.
    Type: Application
    Filed: May 29, 2014
    Publication date: December 4, 2014
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventor: Kazuyoshi KONTANI
  • Publication number: 20140285974
    Abstract: A substrate spacing member includes a spacer portion which is disposed between the two substrates in contact with both edge portions thereof to keep a distance between the two substrates constant, spacer member holding portions which hold the spacer members, a frame body portion that connects the spacer member holding portions to each other, a branch portion which extends toward a predetermined position between the two substrates from the frame body portion or the spacer member holding portions, and electrode holding portions which are provided at the branch portions, and hold electrodes at the predetermined positions.
    Type: Application
    Filed: March 20, 2014
    Publication date: September 25, 2014
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Naoki HIGASHIKAWA, Kazuyoshi KONTANI
  • Publication number: 20140002054
    Abstract: An electronic device includes a support that is coupled to a coupled subject and includes a support portion, a substrate supported by the support portion, a current sensor including a signal terminal, wherein the current sensor is connected to the substrate in a manner allowing for a signal to be sent to the substrate through the signal terminal, and a fastener fastening the current sensor to the support portion and the substrate. The current sensor is suspended from the substrate. The support portion is arranged between the substrate and the current sensor.
    Type: Application
    Filed: June 27, 2013
    Publication date: January 2, 2014
    Inventors: Naoki HIGASHIKAWA, Kazuyoshi KONTANI
  • Patent number: 8288838
    Abstract: A semiconductor unit includes a semiconductor chip, a ceramic substrate having a circuit pattern on which the semiconductor chip is mounted, and a temperature sensor for detecting a temperature. The semiconductor unit further includes a pressing member for retaining the temperature sensor by pressing against the ceramic substrate.
    Type: Grant
    Filed: May 13, 2009
    Date of Patent: October 16, 2012
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Hiroyuki Onishi, Toshiaki Nagase, Jun Ishikawa, Kazuyoshi Kontani, Toshiaki Fukatsu
  • Patent number: 8054641
    Abstract: An electronic unit includes a first circuit board having a power semiconductor device and an electrolytic capacitor and a second circuit board having an electronic component to control the power semiconductor device. The second circuit board is arranged perpendicular to the first circuit board and along the surface of the electrolytic capacitor. The electronic unit further includes a connecting member being jointed at one end thereof to the first circuit board and jointed at the other end thereof to the second circuit board for electrical connection between the first and second circuit boards.
    Type: Grant
    Filed: March 3, 2009
    Date of Patent: November 8, 2011
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Hiroyuki Onishi, Toshiaki Nagase, Jun Ishikawa, Naohito Kanie, Kazuyoshi Kontani
  • Patent number: 8040707
    Abstract: A power converter includes a base plate having thereon a switching device, and positive and negative conductors respectively including main portions disposed parallel to the base plate. One of the main portions is placed over the other of the main portions. The main portions are disposed adjacent to and parallel to each other. The main portions are insulated from each other. The power converter includes a capacitor having positive and negative terminals electrically connected to the respective main portions of the positive and negative conductors. Each of the positive and negative conductors includes a side portion extending from the main portion toward the base plate, and a terminal portion extending from the side portion and joined to the base plate. The side portion is formed with a cutout extending from the end adjacent to the base plate to the opposite end connected to the main portion.
    Type: Grant
    Filed: March 3, 2009
    Date of Patent: October 18, 2011
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Hiroyuki Onishi, Toshiaki Nagase, Jun Ishikawa, Kazuyoshi Kontani, Toshinari Fukatsu
  • Patent number: 8035982
    Abstract: A power converter apparatus that includes a substrate, plate-like positive and negative interconnection members, capacitors, and a cover is disclosed. Pairs of groups of switching elements are mounted on the substrate. The cover is arranged over the substrate to encompass the switching elements, the positive interconnection member, the negative interconnection member, and the capacitor. The positive interconnection member and the negative interconnection member each have a terminal portion that is joined to a circuit pattern on the substrate by ultrasonic bonding.
    Type: Grant
    Filed: March 4, 2009
    Date of Patent: October 11, 2011
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Kazuyoshi Kontani, Toshinari Fukatsu, Toshiaki Nagase, Hiroyuki Onishi, Jun Ishikawa
  • Patent number: 8031479
    Abstract: A power converter apparatus that includes a substrate, plate-like positive and negative interconnection members, and capacitors is disclosed. Pairs of groups of switching elements are mounted on the substrate. Each of the positive interconnection member and the negative interconnection member has a terminal portion. The terminal portion has a joint portion that is electrically joined to a circuit pattern on the substrate. The switching elements are arranged in the same number on both sides of the joint portion of at least the positive interconnection member of the positive and negative interconnection members.
    Type: Grant
    Filed: March 3, 2009
    Date of Patent: October 4, 2011
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Takashi Nagashima, Hiroyuki Onishi, Toshiaki Nagase, Jun Ishikawa, Kazuyoshi Kontani, Toshinari Fukatsu