Patents by Inventor Yoshiaki Ichikawa

Yoshiaki Ichikawa 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: 20180088179
    Abstract: A battery monitoring unit includes a plurality of voltage detection lines, a flexible printed circuit board extending in a stuck direction of single batteries, an electronic circuit connected to one end portions of the plurality of the voltage detection lines so as to detect voltage of each of the single batteries and mounted on the flexible printed circuit board, a plurality of busbar fixing portions formed integrally with the flexible printed circuit board and to which the plurality of the busbars are fixed respectively, and communication lines disposed in the flexible printed circuit board so as to connect between the electronic circuit and a battery ECU.
    Type: Application
    Filed: September 25, 2017
    Publication date: March 29, 2018
    Inventors: Takao Ota, Kazuya Harakawa, Yoshiaki Ichikawa, Yoshiaki Nakayama
  • Patent number: 9912082
    Abstract: A electric wire connection structure includes a flat cable including a plurality of linear conductors and an insulator covering the linear conductors; a plurality of busbars for electrically connecting electrode terminals provided on two or more of battery cells stretched in a given direction among the plurality of battery cells stacked in the direction and included in a battery module, the electrode terminals being lined up in the direction; and connecting members provided for each combination of the linear conductors and the busbars to include a connecting member main body and a pressure welding blade portion connected to the connecting member main body, a pressure welding groove being formed on the pressure welding blade portion.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: March 6, 2018
    Assignee: YAZAKI CORPORATION
    Inventors: Yoshiaki Ichikawa, Hirotaka Mukasa, Hirokuni Koike
  • Publication number: 20180034021
    Abstract: A battery pack has bus bars, a battery stack which is an assembly of plural battery cells, a bus bar casing which supports a bus bar casing, and a cover member. Electrode terminals of battery cells adjacently arranged in the battery stack are connected together through the bus bars. An upstream side passage and a downstream side passage are formed between the bus bars and the cover member. Upstream side wall surfaces forming an inlet part of the upstream side passage or downstream side wall surfaces forming an outlet part of the downstream side passage is arranged at a location closer to the battery cell side than a location of a surface of the bus bar side.
    Type: Application
    Filed: July 20, 2017
    Publication date: February 1, 2018
    Applicants: DENSO CORPORATION, YAZAKI CORPORATION
    Inventors: Hiroyoshi YAMAMOTO, Shota IGUCHI, Koji YAMASHITA, Hisato INOUE, Yoshiaki ICHIKAWA, Katsunori SATO, Hidehiro TAKASUGI
  • Publication number: 20180034014
    Abstract: Each battery module of a battery pack includes a stack of serially connected battery cells, a gas discharge duct extending in a cell arrangement direction to guide gas discharged from a relief valve of each battery cell to an outside of the battery module, the gas discharge duct having a first connection opening at one end and a second connection opening at the other end, a first connection terminal piece having an inner end portion electrically connected to an electrode of one of the battery cells at one end of the serial connection and an outer end portion disposed inside the first connection opening, and a second connection terminal piece having an inner end portion electrically connected to an electrode of another one of the battery cells at another end of the serial connection and an outer end portion disposed inside the second connection opening.
    Type: Application
    Filed: July 26, 2017
    Publication date: February 1, 2018
    Applicants: YAZAKI CORPORATION, DENSO CORPORATION
    Inventors: Yoshiaki ICHIKAWA, Katsunori SATO, Hidehiro TAKASUGI, Hirokuni KOIKE, Hisato INOUE, Hiroyoshi YAMAMOTO
  • Patent number: 9716262
    Abstract: A battery wiring module is manufactured by an arrangement process of arranging in parallel a long chain bus-bar which is configured by connecting a plurality of bus bars at chain parts, a covering process of covering both an outer periphery of plurality of linear conductors and a side edge of the chain bus-bar adjacent to the plurality of linear conductors with an insulation resin part integrally formed by extrusion molding, a breaking process of breaking the chain parts of the chain bus-bar in order to separate the plurality of bus bars, and a connection process of electrically connecting each of the plurality of linear conductors to a predetermined one of the bus bars.
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: July 25, 2017
    Assignee: YAZAKI CORPORATION
    Inventors: Yoshiaki Ichikawa, Hirotaka Mukasa
  • Publication number: 20170179460
    Abstract: A bus bar module includes a plurality of bus bars that connects a plurality of unit cells of a battery assembly constituted by the unit cells, a plurality of electric wires that are welded to surfaces of the bus bars, and an electric wire router that is made of insulating resin and includes bus bar reception portions provided side by side in an array direction of the unit cells, wherein each of the bus bar reception portions includes an opening portion that is formed to be opposed to a back surface of a corresponding one of the bus bars in accordance with a connection portion with a conductor of a corresponding one of the electric wires, and an electric wire tip holding portion that holds the vicinity of a welding portion of the conductor.
    Type: Application
    Filed: December 16, 2016
    Publication date: June 22, 2017
    Inventors: Takuto Gotoh, Naoyuki Ikeda, Nobuaki Yoshioka, Yoshiaki Ichikawa
  • Publication number: 20160380318
    Abstract: A power source device includes: a battery assembly (40) including a plurality of battery cells (4) which are aligned; a bus bar module (6) formed by linking a plurality of bus bar storing portions (61) which store a plurality of bus bars (1) which link and connect electrodes (41, 42) of the battery assembly; a smoke exhausting duct (3) provided on one side of the battery assembly; and a control board (2) provided on the smoke exhausting duct and electrically connected to a voltage detection terminal for detecting a voltage of each of the battery cells.
    Type: Application
    Filed: June 27, 2014
    Publication date: December 29, 2016
    Applicants: Yazaki Corporation, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yoshiaki ICHIKAWA, Koji KOIZUMI, Takenori TSUCHIYA
  • Publication number: 20160351869
    Abstract: A power source device includes: a battery assembly comprising a plurality of batteries which are arranged such that electrodes having different polarities of the batteries are adjacent to each other; a plurality of bus bars which are attached to two electrode rows of the battery assembly, and which connect positive electrodes and negative electrodes which are adjacent to each other in each of the electrode rows; a plurality of holding members, each of which holds, for each of a plurality of battery groups formed by dividing the battery assembly into the battery groups, the bus bars attached to the electrode rows of the batteries belonging to the corresponding one of the battery groups; and a plurality of battery monitoring units, each of which monitors, for each of the battery groups, voltages of batteries belonging to the corresponding one of the battery groups.
    Type: Application
    Filed: August 11, 2016
    Publication date: December 1, 2016
    Inventors: Yoshiaki Ichikawa, Koji Koizumi, Hirotaka Mukasa
  • Publication number: 20160322624
    Abstract: A bus bar module includes a plurality of first bus bars, a plurality of second bus bars, a resin-made case, a resin-made case, and a resin-made bridging member. The first bus bars electrically connect electrode terminals to each other in a first electrode row arranged in the same direction included in a battery assembly that is a plurality of batteries superimposed in the same direction, and electrically connect the electrode terminals of the two adjacent batteries to each other in the one electrode row. The second bus bars electrically connect electrode terminals of the two adjacent batteries to each other in a second electrode row in the battery assembly. The case holds the first bus bars. The case holds the second bus bars. The bridging member bridges these cases.
    Type: Application
    Filed: July 7, 2016
    Publication date: November 3, 2016
    Inventors: Yoshiaki Ichikawa, Koji Koizumi
  • Publication number: 20160268575
    Abstract: Provided is a busbar including: a busbar main body made of a metal plate and transmits and receives power to/from a power supplying portion or a power consuming portion; and a connection portion configured to electrically connect the busbar main body to a voltage detecting wire. In the busbar, the connection portion is formed in the busbar main body so as to be electrically connected to the electric wire disposed in parallel along the busbar main body at a root side of a piece portion in such a manner that the piece portion is folded back from the root side of the piece portion. The piece portion is formed by cutting out and bending upward of a part of the metal plate.
    Type: Application
    Filed: May 25, 2016
    Publication date: September 15, 2016
    Applicant: YAZAKI CORPORATION
    Inventors: Yoshiaki ICHIKAWA, Hirotaka MUKASA, Hirokuni KOIKE
  • Publication number: 20160268576
    Abstract: Provided is a method for manufacturing battery wiring module including: a coating step of coating one long side portion of an elongated flat plate conductor and outer peripheral portions of linear conductors disposed in parallel along the long side portion with a predetermined gap therebetween having a predetermined gap with respect to the long side portion by a first insulating resin portion; and a pressing step of separating the flat plate conductor at a predetermined gap in the longitudinal direction of the flat plate conductor and forming a plurality of busbar electrically connecting electrode terminals provided in at least two battery cells connected to each other in the same direction among the plurality of battery cells overlapping each other in the same direction, the electrode terminals being arranged in parallel in the same direction.
    Type: Application
    Filed: May 23, 2016
    Publication date: September 15, 2016
    Applicant: YAZAKI CORPORATION
    Inventors: Yoshiaki ICHIKAWA, Hirotaka MUKASA, Hirokuni KOIKE
  • Publication number: 20160268579
    Abstract: Provided is a method for manufacturing a battery wiring module including: a coating step of coating a first long side portion of a flat plate conductor and a plurality of linear conductors following the first long side portion by a first insulating resin portion and of coating a second long side portion of the flat plate conductor and a plurality of linear conductors following the second long side portion by a second insulating resin portion; and a cutting step of cutting the insulating resin portion so that the plurality of busbars is divided into a plurality of busbar groups and the plurality of linear conductors coated by any one of the first insulating resin portion and the second insulating resin portion and the busbar groups are separated.
    Type: Application
    Filed: May 25, 2016
    Publication date: September 15, 2016
    Applicant: YAZAKI CORPORATION
    Inventors: Yoshiaki ICHIKAWA, Hirotaka MUKASA, Hirokuni KOIKE
  • Publication number: 20160268578
    Abstract: Provided is a busbar module including a plurality of split busbar modules that are configured such that a busbar group including a plurality of busbars and split flat cable including a plurality of linear conductors are integrated at one end side in a longitudinal direction of the split flat cables. The plurality of split busbar modules include split flat cables having a length different from each other and are configured such that the split flat cables are overlapped with each other and the busbar groups are respectively arranged in the same direction.
    Type: Application
    Filed: May 24, 2016
    Publication date: September 15, 2016
    Applicant: YAZAKI CORPORATION
    Inventors: Yoshiaki ICHIKAWA, Hirotaka MUKASA, Hirokuni KOIKE
  • Publication number: 20160268702
    Abstract: A electric wire connection structure includes a flat cable including a plurality of linear conductors and an insulator covering the linear conductors; a plurality of busbars for electrically connecting electrode terminals provided on two or more of battery cells stretched in a given direction among the plurality of battery cells stacked in the direction and included in a battery module, the electrode terminals being lined up in the direction; and connecting members provided for each combination of the linear conductors and the busbars to include a connecting member main body and a pressure welding blade portion connected to the connecting member main body, a pressure welding groove being formed on the pressure welding blade portion.
    Type: Application
    Filed: May 23, 2016
    Publication date: September 15, 2016
    Applicant: YAZAKI CORPORATION
    Inventors: Yoshiaki ICHIKAWA, Hirotaka MUKASA, Hirokuni KOIKE
  • Publication number: 20160268577
    Abstract: Provided is a battery wiring module including: a plurality of linear conductors disposed in parallel with a predetermined gap therebetween; a plurality of busbars disposed in parallel along at least one of the linear conductors disposed at both ends having a predetermined gap therebetween so as to electrically connect electrode terminals provided in at least two battery cells connected to each other in the same direction among the plurality of battery cells overlapping each other in the same direction, the electrode terminals being arranged in the same direction; a first insulating resin portion which integrally coats the outer peripheral portions of the plurality of linear conductors and a side edge portion adjacent to the linear conductor in the plurality of busbars; and a connection conductor which electrically connects the linear conductor and the busbar to each other.
    Type: Application
    Filed: May 23, 2016
    Publication date: September 15, 2016
    Applicant: YAZAKI CORPORATION
    Inventors: Yoshiaki ICHIKAWA, Hirotaka MUKASA, Hirokuni KOIKE
  • Publication number: 20160172652
    Abstract: A battery wiring module is to be combined with a battery module including a plurality of battery cells stacked in a state of being alternatively reversed so that a positive electrode terminal and a negative electrode terminal are adjoined between the adjacent battery cells. The battery wiring module is provided with a plurality of linear conductors which are arranged at an interval, a plurality of bus bars which are arranged at an interval along to at least one side of the plurality of linear conductors so that each of the plurality of bus bars electrically connects the positive electrode terminal and the negative electrode terminal adjacent to each other, and an insulation resin part including both a covering part for covering an outer periphery of the plurality of linear conductors and a bus bar connection part.
    Type: Application
    Filed: December 14, 2015
    Publication date: June 16, 2016
    Applicant: Yazaki Corporation
    Inventors: Yoshiaki ICHIKAWA, Hirotaka MUKASA
  • Publication number: 20160172651
    Abstract: A battery wiring module is to be combined with a battery module including a plurality of battery cells stacked in a state of being alternatively reversed so that a positive electrode terminal and a negative electrode terminal are adjoined between the adjacent battery cells. The battery wiring module is provided with a plurality of linear conductors which are arranged in parallel at an interval, a plurality of bus bars which are arranged at a predetermined interval along to at least one side of the plurality of linear conductors, and an insulation resin part which integrally covers both an outer periphery of the plurality of linear conductors and side edges of the plurality of bus bars adjacent to the linear conductors.
    Type: Application
    Filed: December 14, 2015
    Publication date: June 16, 2016
    Applicant: Yazaki Corporation
    Inventors: Yoshiaki ICHIKAWA, Hirotaka MUKASA
  • Publication number: 20160172650
    Abstract: A battery wiring module is manufactured by an arrangement process of arranging in parallel a long chain bus-bar which is configured by connecting a plurality of bus bars at chain parts, a covering process of covering both an outer periphery of plurality of linear conductors and a side edge of the chain bus-bar adjacent to the plurality of linear conductors with an insulation resin part integrally formed by extrusion molding, a breaking process of breaking the chain parts of the chain bus-bar in order to separate the plurality of bus bars, and a connection process of electrically connecting each of the plurality of linear conductors to a predetermined one of the bus bars.
    Type: Application
    Filed: December 14, 2015
    Publication date: June 16, 2016
    Applicant: Yazaki Corporation
    Inventors: Yoshiaki ICHIKAWA, Hirotaka MUKASA
  • Patent number: 9343725
    Abstract: Disclosed is a bus bar module and a power source unit capable of reducing manufacturing cost thereof. A bus bar module (1) includes a plurality of bus bars (3) arranged in line so as to connect a plurality of batteries (3) in series; a plurality of housings (50) housing each of the bus bars (3) and each including a placement part (51) on which each of the bus bar (3) is placed; a pair of opposite walls (52) upstanding from the placement, part (51) and opposed to each other, a continuing wall (52) continuous with the pair of opposite walls (52), and an opening (54) located opposed to the continuing wall (53); and a flat circuit board (4) connected to each of the bus bars (3) and arranged in an arrangement direction X of the bus bars (3), the flat circuit board (4) being, with a width direction thereof along an upstanding direction of the pair of opposite walls (52), attached to the housings (50) so as to cover the opening (54).
    Type: Grant
    Filed: January 13, 2014
    Date of Patent: May 17, 2016
    Assignee: Yazaki Corporation
    Inventors: Yoshiaki Ichikawa, Hiroyuki Kato, Yoshikazu Ezuka
  • Publication number: 20160126601
    Abstract: An attachment structure for a temperature detector, includes a battery module including a plurality of battery cells each having a pair of electrode terminals, an insulating cover configured to be attached to the battery module so as to cover the electrode terminals, a temperature detector configured to contact with a temperature measuring face of the battery cells and detect a temperature of the battery cells, and a temperature detector holding portion formed in the insulating cover. The plurality of battery cells are disposed to stack one another. The temperature detector holding portion hold the temperature detector in a position where the temperature detector contacts with the temperature measuring face when the insulating cover is attached to the battery module.
    Type: Application
    Filed: October 29, 2015
    Publication date: May 5, 2016
    Applicant: Yazaki Corporation
    Inventors: Yoshiaki ICHIKAWA, Hirotaka MUKASA, Hirokuni KOIKE