Patents by Inventor Yusuke Isaji

Yusuke Isaji 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: 12142883
    Abstract: A terminal connection unit has a novel structure that enables advantageously absorbing tolerance between positions of a terminal fitting and a connection portion while also ensuring a good state of connection between the terminal fitting and the connection portion. A terminal connection unit includes: a current-carrying member that has a connection portion for connection to a terminal fitting provided at the terminal end of an electric wire; and a support portion that fixedly supports the current-carrying member. The current-carrying member includes a fixing portion that is fixed to the support portion, and an extendable portion that couples the connection portion and the fixing portion to each other and can extend and contract in the first direction. The support portion includes an attachment portion that is attached to the connection portion and is displaceable in a first direction.
    Type: Grant
    Filed: January 26, 2021
    Date of Patent: November 12, 2024
    Assignees: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Yusuke Isaji, Hitoshi Takeda
  • Patent number: 12132302
    Abstract: Disclosed is a circuit assembly having a novel structure that enables circuit components to be laid out in a lower case with high design flexibility and higher spatial efficiency. A circuit assembly includes: a lower case for accommodating lower circuit components; an upper case for covering the lower case; upper circuit components attached to the upper case, and a fastening member holder for holding a fastening member for fixing the upper circuit components to the upper case, the fastening member holder being provided in the upper case.
    Type: Grant
    Filed: January 12, 2021
    Date of Patent: October 29, 2024
    Assignees: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Yusuke Isaji, Hitoshi Takeda
  • Patent number: 12114455
    Abstract: Disclosed is a circuit unit with a novel structure that can counter the heat generation by resistors while suppressing an increase in size and cost of the circuit unit. A circuit unit includes a wiring member, a lower case that holds the wiring member, an upper case that covers the lower case, and resistors connected to the wiring member, wherein the upper case include wall portions that surround peripheries of the resistors, and wherein, in a first orthogonal direction orthogonal to the longitudinal direction of the resistors, the separation distance between intermediate portions in the longitudinal direction of the resistors and the wall portions of the upper case is greater than the separation distance between end portions in the longitudinal direction of the resistors and the wall portions of the upper case.
    Type: Grant
    Filed: April 23, 2021
    Date of Patent: October 8, 2024
    Assignees: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Yusuke Isaji, Hitoshi Takeda
  • Publication number: 20240300347
    Abstract: An electronic device module that is connected to a battery pack including a high voltage battery is provided with a conductive path electrically connected to the battery pack, a branch part electrically connected to the conductive path, a plurality of branch paths electrically connected to the branch part, a circuit board electrically connected to at least one of the plurality of branch paths, and a plurality of branch connectors electrically connected to the plurality of branch paths, the circuit board including a plurality of power conversion units that convert power.
    Type: Application
    Filed: January 17, 2022
    Publication date: September 12, 2024
    Inventors: Yuki FUJIMURA, Yusuke ISAJI, Yoshiyuki USUI, Masato TSUTSUKI
  • Publication number: 20240300380
    Abstract: Provided is an in-vehicle switching device including a switching circuit; a first conduction path through which a current is allowed to flow in the series connection state and a current does not flow in the parallel connection state; a second conduction path through which a current is allowed to flow in the parallel connection state and a current does not flow in the series connection state; a third conduction path that forms a path between a negative electrode of a first battery and a positive electrode of a second battery in the series connection state, and forms a path between both positive electrodes or between both negative electrodes of the first battery and the second battery in the parallel connection state; and a fuse portion that is provided in the first conduction path and performs an operation of interrupting the first conduction path based on an external signal.
    Type: Application
    Filed: April 8, 2022
    Publication date: September 12, 2024
    Inventors: Yusuke ISAJI, Takayoshi BANDO
  • Publication number: 20240227623
    Abstract: An on-board switching device includes: a switching circuit; a first conduction path through which a current flows in a series connection state and no current flows in a parallel connection state; a second conduction path through which a current flows in the parallel connection state and no current flows in the series connection state; a third conduction path that forms a path between a negative electrode of a first battery and a positive electrode of a second battery in the series connection state and forms a path between both positive electrodes or between both negative electrodes of the first battery and the second battery in the parallel connection state; and a current detection unit that detects a current flowing through the third conduction path.
    Type: Application
    Filed: February 1, 2022
    Publication date: July 11, 2024
    Inventors: Yusuke ISAJI, Takayoshi BANDO
  • Publication number: 20240204543
    Abstract: A power control apparatus is connected to a high-voltage battery constructed by connecting a plurality of cell units. In the power control apparatus, an electrical connection unit for connecting the high-voltage battery and a load and a series-parallel switching unit that is connected to the plurality of cell units and the electrical connection unit and switches a connection between the plurality of cell units between series and parallel are integrated.
    Type: Application
    Filed: March 22, 2022
    Publication date: June 20, 2024
    Inventor: Yusuke ISAJI
  • Patent number: 12014888
    Abstract: Provided is a circuit assembly including: a main relay that is to be electrically connected between a load and a battery; a pre-charge circuit connected in parallel with the main relay; and a heat transfer member, wherein the pre-charge circuit includes current-carrying portions that are to be connected to the main relay, and the heat transfer member and the current-carrying portions are in contact with each other.
    Type: Grant
    Filed: April 14, 2020
    Date of Patent: June 18, 2024
    Assignees: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Yusuke Isaji, Ryoya Okamoto, Hitoshi Takeda
  • Publication number: 20240131963
    Abstract: An on-board switching device includes: a switching circuit; a first conduction path through which a current flows in a series connection state and no current flows in a parallel connection state; a second conduction path through which a current flows in the parallel connection state and no current flows in the series connection state; a third conduction path that forms a path between a negative electrode of a first battery and a positive electrode of a second battery in the series connection state and forms a path between both positive electrodes or between both negative electrodes of the first battery and the second battery in the parallel connection state; and a current detection unit that detects a current flowing through the third conduction path.
    Type: Application
    Filed: February 1, 2022
    Publication date: April 25, 2024
    Inventors: Yusuke ISAJI, Takayoshi BANDO
  • Patent number: 11955786
    Abstract: Provided is an electrical junction box that has a novel structure capable of stably preventing water from intruding into a case while simplifying the operation for connecting the electrical junction box and an external apparatus. An electrical junction box includes a circuit structure that includes a connection terminal for connection to an external apparatus, a case that has an insertion hole and houses the circuit structure, a relay terminal that is connected to the connection terminal, and includes an external connection portion that is inserted into the insertion hole and is exposed to the outside of the case, and a sealing member that is compressed between opposing surfaces of the insertion hole and the relay terminal and seals the insertion hole.
    Type: Grant
    Filed: April 27, 2020
    Date of Patent: April 9, 2024
    Assignees: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Yusuke Isaji, Kenji Nakagawa
  • Patent number: 11943902
    Abstract: Provided is a circuit structure having a novel structure with which the dissipation of heat from a heat generating component can be more reliably promoted with a short heat transfer path. A circuit structure includes: a heat generating component; bus bars connected to connection portions of the heat generating component; an insulating base member configured to hold the heat generating component and the bus bars; and a coolant flow path provided inside the base member and through which a coolant flows, the bus bars being in thermal contact with the coolant flow path.
    Type: Grant
    Filed: October 29, 2020
    Date of Patent: March 26, 2024
    Assignees: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Yusuke Isaji, Hitoshi Takeda
  • Publication number: 20230368991
    Abstract: A DC circuit switching apparatus is connected between an automobile battery and a motor-side circuit and cuts off current that flows in two directions. The DC circuit switching apparatus includes a breaker that cuts off current, a first voltage holding circuit, which is constituted by a first diode and a first capacitor that are connected in series, that is provided in parallel to the breaker and is configured to allow power supply from the automobile battery to the motor-side circuit, and a second voltage holding circuit, which is constituted by a second diode and a second capacitor that are connected in series, that is provided in parallel to the breaker and is configured to allow power supply from the motor-side circuit to the automobile battery.
    Type: Application
    Filed: August 2, 2021
    Publication date: November 16, 2023
    Inventors: Yusuke ISAJI, Manami OKADA, Yuki FUJIMURA, Fumihiro KUZUHARA, Noboru WAKATSUKI
  • Patent number: 11811209
    Abstract: A circuit structure includes: an upper case having positioning holes; bus bars that are provided in an inductor disposed in the upper case and that have through holes; terminals that are connected to electric wires and that have bolts disposed thereon that penetrate the through holes; nuts that sandwich the bus bars between the nuts and the terminals by being screwed onto the bolts; and a lower case that is attached to the upper case. The lower case includes: front walls, left walls, and right walls that project upward from the lower case and position the terminals relative to the lower case by coming into contact with the terminals; and case positioning portions that project upward from the lower case and that are inserted into the positioning holes.
    Type: Grant
    Filed: November 20, 2019
    Date of Patent: November 7, 2023
    Assignees: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Yusuke Isaji, Ryoya Okamoto, Hiroshi Shimizu, Hitoshi Takeda
  • Patent number: 11799175
    Abstract: A power supply device disclosed by the present specification includes: a first power storage element group that has a pair of first external terminals having different polarities, and includes a plurality of power storage elements; and a second power storage element group that has a pair of second external terminals having different polarities, and includes a plurality of power storage elements. The first power storage element group and the second power storage element group are arranged adjacent to each other in a front-rear direction, the first external terminals are provided at the front edge on the second power storage element group side of the first power storage element group, and the second external terminals 48 are arranged to be adjacent to the first external terminals at a rear edge on the first power storage element group side of the second power storage element group.
    Type: Grant
    Filed: May 15, 2019
    Date of Patent: October 24, 2023
    Assignees: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Yusuke Isaji, Hiroshi Shimizu, Ryoya Okamoto
  • Publication number: 20230311663
    Abstract: A DC circuit switching apparatus having a novel structure is disclosed that can reduce the number of electromagnetic contactors with a simple structure, and can realize a compact and low-cost apparatus. A DC circuit switching apparatus to be connected between a battery and a load that includes a power supply line that connects between the battery and the load, wherein the power supply line includes a positive electrode-side power supply line and a negative electrode-side power supply line, a main relay is connected to one of the positive electrode-side power supply line and the negative electrode-side power supply line, and an active fuse is connected to the other of the positive electrode-side power supply line and the negative electrode-side power supply line.
    Type: Application
    Filed: July 7, 2021
    Publication date: October 5, 2023
    Inventor: Yusuke ISAJI
  • Publication number: 20230283088
    Abstract: A circuit structure with a novel structure is disclosed in which a measure against arcs can be implemented with a simple structure and a reduction in size and cost can be realized. A circuit structure including: a power supply line configured to connect a battery and a load; a main relay connected to the power supply line; a pre-charge circuit including a pre-charge resistor and a pre-charge relay connected in series, and connected in parallel to the main relay; and a sub relay connected in parallel to the pre-charge resistor.
    Type: Application
    Filed: August 2, 2021
    Publication date: September 7, 2023
    Inventors: Yusuke ISAJI, Manami OKADA, Yuki FUJIMURA
  • Publication number: 20230268618
    Abstract: A connection module is configured to be accommodated inside a battery pack including an upper case and a lower case, the connection module including: a plurality of bus bars that electrically connect a device disposed on the upper case side inside the battery pack to a connector disposed on the lower case side inside the battery pack; a plurality of holders that hold the plurality of bus bars, each of the plurality of holders including bus bar holding portions; and a bracket capable of locking the plurality of holders, wherein, in a state in which the plurality of holders that hold the plurality of bus bars are locked to the bracket, the plurality of bus bars are arranged side by side in a left-right direction orthogonal to a vertical direction, a direction orthogonal to the vertical direction and intersecting the left-right direction is assumed to be a front-rear direction.
    Type: Application
    Filed: April 27, 2021
    Publication date: August 24, 2023
    Applicants: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Yusuke ISAJI, Hitoshi TAKEDA
  • Publication number: 20230238807
    Abstract: A power distribution module including: a power line connecting between a battery and a load; a main relay connected to the power line; an active fuse connected to the power line on the battery side relative to the main relay; a first voltage converter connected to the power line on the load side relative to the main relay; an abnormality detection unit configured to detect an abnormality of the power line; and a first driving/control wiring extending from the first voltage converter and connected to the active fuse, wherein a first control unit mounted on the first voltage converter transmits a control signal for disconnecting the active fuse when the abnormality detection unit detects an abnormality of the power line, and the active fuse is disconnected.
    Type: Application
    Filed: June 17, 2021
    Publication date: July 27, 2023
    Inventors: Yuki FUJIMURA, Fumihiro KUZUHARA, Yusuke ISAJI, Takafumi KAWAKAMI, Masayoshi HIROTA, Kazuki MASUDA
  • Publication number: 20230171910
    Abstract: Disclosed is a circuit unit with a novel structure that can counter the heat generation by resistors while suppressing an increase in size and cost of the circuit unit. A circuit unit includes a wiring member, a lower case that holds the wiring member, an upper case that covers the lower case, and resistors connected to the wiring member, wherein the upper case include wall portions that surround peripheries of the resistors, and wherein, in a first orthogonal direction orthogonal to the longitudinal direction of the resistors, the separation distance between intermediate portions in the longitudinal direction of the resistors and the wall portions of the upper case is greater than the separation distance between end portions in the longitudinal direction of the resistors and the wall portions of the upper case.
    Type: Application
    Filed: April 23, 2021
    Publication date: June 1, 2023
    Applicants: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Yusuke ISAJI, Hitoshi TAKEDA
  • Publication number: 20230155308
    Abstract: Provided is a relay connector including a relay terminal including a first connection portion configured to connect to a first device side terminal and a second connection portion configured to connect to a second device side terminal; a clamping member including a first clamping portion configured to clamp the first device side terminal together with the first connection portion and a second clamping portion configured to clamp the second device side terminal together with the second connection portion; a lower case configured to hold the relay terminal; and an upper case configured to hold the clamping member, wherein a connector case includes a first insertion opening and a second insertion opening; and guide portions are formed on the clamping member, the guide portions guiding the first device side terminal inserted from the first insertion opening and the second device side terminal inserted from the second insertion opening.
    Type: Application
    Filed: March 30, 2021
    Publication date: May 18, 2023
    Applicants: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Yuki FUJIMURA, Hiroshi SHIMIZU, Hitoshi TAKEDA, Yusuke ISAJI