Patents by Inventor Shinji Ishii

Shinji 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: 10410799
    Abstract: An electrochemical device includes a positive electrode, a negative electrode, and separators which are stacked and wound together, and electrolytic solution. A negative-electrode terminal is provided which is made of metal, and has a joining part which is a part joined to the principal face of the negative-electrode collector. The negative electrode has a first width, the positive electrode has a second width, which is smaller than the first width, and the separators have a third width, which is greater than the first width, along the direction parallel with the center axis of winding. The length of the joining part along the direction parallel with the center axis of winding is equal to or greater than the second width, but equal to or smaller than the third width.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: September 10, 2019
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Takatoshi Nagase, Shinji Ishii, Koji Kano, Katsunori Yokoshima
  • Patent number: 10403871
    Abstract: An electric storage cell has an electric storage element and a covering film package. The covering film package houses the electric storage element and includes: a metal layer having a first principle face on the electric storage element side and a second principle face on the opposite side of the first principle face, an internal resin layer made of synthetic resin and laminated to the first principle face, and an external resin layer made of synthetic resin and laminated to the second principle face, with a slit formed at least in the external resin layer; wherein a stress mitigation part to mitigate any stress that tries to separate the internal resin layers that are contacting each other, and a stress concentration part where this stress concentrates, are provided between the slit and the electric storage element.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: September 3, 2019
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Takayuki Tsuchiya, Hiromi Sato, Shinji Ishii
  • Patent number: 10381171
    Abstract: An electric storage cell has an electric storage element and a covering body. The covering body houses the electric storage element and has a metal layer with a first principal face on the electric storage element side and a second principal face on the opposite side, an internal resin layer made of resin laminated onto the first principal face, and an external resin layer made of resin laminated onto the second principal face, with a groove part formed on the second principal face side of the metal layer. The above structures provides a highly reliable electric storage cell, covering film, and electric storage module capable of releasing the rising internal pressure safely in the event of abnormality.
    Type: Grant
    Filed: February 11, 2016
    Date of Patent: August 13, 2019
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Hiromi Sato, Tomofumi Akiba, Shinji Ishii, Katsunori Yokoshima
  • Patent number: 10354809
    Abstract: An electrochemical device is constituted by a positive electrode, a negative electrode, and separators that are wound in such a way that the first principal face of the negative electrode and third principal face of the positive electrode are on the inner side of winding, while the second principal face of the negative electrode and fourth principal face of the positive electrode are on the outer side of winding, with the separators separating the positive electrode and negative electrode; wherein the second principal face has a first region opposed to the positive electrode via the separator and a second region on the outermost side of winding and not opposed to the positive electrode, the second region includes a first uncoated region where no negative electrode active material layer is formed, and a metal lithium is joined to the first uncoated region and immersed in electrolytic solution.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: July 16, 2019
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Koji Kano, Shinji Ishii, Katsunori Yokoshima, Hiroki Takahashi, Takatoshi Nagase
  • Patent number: 10344515
    Abstract: A travel assistance device includes a first rail inclined downward from a first end portion side to a second end portion side in longitudinal direction, a second rail provided parallel to the first rail and inclined, in opposite direction to the first rail, downward from the second end portion to the first end portion in the longitudinal direction, a holding member having a runner portion slidably guided by the rails and holding a travelling body, and a switch mechanism configured to be switched between a state in which the runner portion is guided by the first rail and is assisted to travel downward on the first rail by a load applied to the runner portion and a state in which the runner portion is guided by the second rail and is assisted to travel downward on the second rail by the load applied to the runner portion.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: July 9, 2019
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Masashi Ishii, Shinji Adachi, Tomoyasu Hirano, Yoshiaki Kaji, Koya Tanaka
  • Publication number: 20190107583
    Abstract: An electric storage module includes an electric storage cell, a voltage detection board, and a spacer. The electric storage cell has an electric storage element, as well as terminals electrically connected to the positive or negative electrodes of the electric storage element. The voltage detection board has a land and wiring provided on it. The spacer has electrical conductivity and contacts the terminal and the land.
    Type: Application
    Filed: October 1, 2018
    Publication date: April 11, 2019
    Inventors: Takayuki TSUCHIYA, Shinji ISHII
  • Publication number: 20190096591
    Abstract: An electric storage module includes an electric storage cell and an enclosure, wherein the electric storage cell includes an electric storage element and an exterior body in which the electric storage element is sealed; the enclosure has a housing space in which the electric storage cell is housed; the enclosure has a through hole that connects the housing space and the exterior space; and the through hole is formed at a position corresponding to the part of the electric storage cell where the electric storage element does not exist.
    Type: Application
    Filed: September 21, 2018
    Publication date: March 28, 2019
    Inventors: Takayuki TSUCHIYA, Shinji ISHII
  • Publication number: 20190066934
    Abstract: An electrochemical device is constituted by a positive electrode, a negative electrode, and separators that are wound in such a way that the first principal face of the negative electrode and third principal face of the positive electrode are on the inner side of winding, while the second principal face of the negative electrode and fourth principal face of the positive electrode are on the outer side of winding, with the separators separating the positive electrode and negative electrode; wherein the second principal face has a first region opposed to the positive electrode via the separator and a second region on the outermost side of winding and not opposed to the positive electrode, the second region includes a first uncoated region where no negative electrode active material layer is formed, and a metal lithium is joined to the first uncoated region and immersed in electrolytic solution.
    Type: Application
    Filed: October 31, 2018
    Publication date: February 28, 2019
    Inventors: Koji KANO, Shinji ISHII, Katsunori YOKOSHIMA, Hiroki TAKAHASHI, Takatoshi NAGASE
  • Patent number: 10137555
    Abstract: A machine tool includes a spindle retaining a tool, a spindle motor, a feed device relatively moving a workpiece and a tool with a feed motor, a spindle motor control unit, and a feed motor control unit. In a method of machining a workpiece with the machine tool, the spindle motor control unit continuously varies a rotational speed of the spindle in a periodic or non-periodic manner with a predetermined amplitude with respect to a target rotational speed. The feed motor control unit continuously varies a relative moving speed between the tool and the workpiece in synchronization with the spindle motor such that a ratio of the rotational speed of the spindle to the moving speed does not become constant at least in a predetermined time zone in which a spindle speed reaches a maximal value and a predetermined time zone in which the spindle speed reaches a minimal value.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: November 27, 2018
    Assignees: THE UNIVERSITY OF TOKYO, DMG Mori Co., Ltd.
    Inventors: Hiroshi Fujimoto, Satoshi Fukagawa, Shinji Ishii, Yuki Terada
  • Publication number: 20180269459
    Abstract: An electric storage module includes an electric storage cell and a frame. The electric storage cell includes: an electric storage element having a positive electrode and a negative electrode; a covering film that, together with an electrolyte, seals the electric storage element; a positive electrode tab made of a first metal material and electrically connected to the positive electrode; and a negative electrode tab made of a second metal material and electrically connected to the negative electrode. The frame forms a housing space in which the electric storage cell is housed, and has a bus bar made of the second metal material. The positive electrode tab and the bus bar are joined to each other by welding, and a mixed-material part where the first metal material and the second metal material are mixed together is formed at the interface between the positive electrode tab and the bus bar.
    Type: Application
    Filed: July 11, 2016
    Publication date: September 20, 2018
    Inventors: Takayuki TSUCHIYA, Shinji ISHII
  • Publication number: 20180240610
    Abstract: A cover is made for electric storage device including: a container which is placed on one principal face of a board having a first through hole for a terminal and a second through hole for a terminal, and which has a first end face orthogonal to the one principal face; and a positive-electrode terminal and a negative-electrode terminal, both projecting from the first end face and then being bent, with their ends penetrating through the first through hole for a terminal and the second through hole for a terminal, respectively, and led out from the other principal face of the board. The first cover is placed on the one principal face side of the board, and forms, together with the first end face and the first principal face, a first housing part for terminals that houses the positive-electrode terminal and the negative-electrode terminal.
    Type: Application
    Filed: February 13, 2018
    Publication date: August 23, 2018
    Inventors: Takayuki TSUCHIYA, Shinji ISHII, Toshifumi MATSUTAKA
  • Publication number: 20180194301
    Abstract: A clip for mounting a first member on a second member includes a first placement portion adapted to be placed in the first member; a second placement portion adapted to be placed in the second member; and a flange portion provided between the first placement portion and the second placement portion. The second placement portion includes side walls on two sides, each having an elastic engagement piece formed by a notch, and a shielding wall provided between the side walls and shielding a space between the side walls from an upper side. An engagement end portion of each of the elastic engagement pieces extends to a first placement portion side.
    Type: Application
    Filed: January 10, 2018
    Publication date: July 12, 2018
    Inventors: Ryota ABE, Shinji ISHII, Hiroyuki KIHARA
  • Publication number: 20180108494
    Abstract: In an embodiment, an electrochemical device includes a winding structure which has a negative electrode, a positive electrode, and separators stacked and wound together; a negative-electrode terminal; a positive-electrode terminal; a first protective tape which covers the negative-electrode terminal and a negative-electrode active material layer; a second protective tape which covers the positive-electrode terminal and a positive-electrode active material layer; and electrolyte, wherein the positive-electrode terminal is separated from the negative-electrode terminal by a first distance. The width corresponding to the sum of a first width of the first protective tape along a winding direction of the winding structure, and a second width of the second protective tape along the winding direction, is smaller than a value obtained by multiplying the first distance by pi.
    Type: Application
    Filed: October 13, 2017
    Publication date: April 19, 2018
    Inventors: Hiroki TAKAHASHI, Koji KANO, Takatoshi NAGASE, Katsunori YOKOSHIMA, Shinji ISHII
  • Publication number: 20180062135
    Abstract: An electric storage cell has an electric storage element and a covering film package. The covering film package houses the electric storage element and includes: a metal layer having a first principle face on the electric storage element side and a second principle face on the opposite side of the first principle face, an internal resin layer laminated to the first principle face, and an external resin layer laminated to the second principle face, with a slit formed in the external resin layer; wherein the contact area further includes a non-seal area between the seal area and the electric storage element as viewed from above, wherein the seal area has a projecting area that penetrates into the non-seal area, and the slit is provided between the projecting area and the electric storage element as viewed from above.
    Type: Application
    Filed: March 30, 2017
    Publication date: March 1, 2018
    Inventors: Takahiro NAGASHIMA, Katsunori YOKOSHIMA, Takayuki TSUCHIYA, Hiromi SATO, Shinji ISHII
  • Publication number: 20180047960
    Abstract: An electric storage cell has an electric storage element and a covering film package. The covering film package houses the electric storage element and includes: a metal layer having a first principle face on the electric storage element side and a second principle face on the opposite side of the first principle face, an internal resin layer made of synthetic resin and laminated to the first principle face, and an external resin layer made of synthetic resin and laminated to the second principle face, with a slit formed in the external resin layer; wherein the contact area further includes a non-seal area between the seal area and the electric storage element as viewed from above, wherein the seal area has a projecting area that penetrates into the non-seal area, and the slit intersects with the boundary between the projecting area and the non-seal area.
    Type: Application
    Filed: March 30, 2017
    Publication date: February 15, 2018
    Inventors: Katsunori YOKOSHIMA, Takayuki TSUCHIYA, Hiromi SATO, Shinji ISHII
  • Publication number: 20180006284
    Abstract: An electric storage cell has an electric storage element and a covering film package. The covering film package houses the electric storage element and includes: a metal layer having a first principle face on the electric storage element side and a second principle face on the opposite side of the first principle face, an internal resin layer made of synthetic resin and laminated to the first principle face, and an external resin layer made of synthetic resin and laminated to the second principle face, with a slit formed at least in the external resin layer; wherein a stress mitigation part to mitigate any stress that tries to separate the internal resin layers that are contacting each other, and a stress concentration part where this stress concentrates, are provided between the slit and the electric storage element.
    Type: Application
    Filed: March 30, 2017
    Publication date: January 4, 2018
    Inventors: Takayuki TSUCHIYA, Hiromi SATO, Shinji ISHII
  • Patent number: 9846428
    Abstract: A controller has a varying speed signal generation unit generating a varying speed command signal varying at predetermined amplitude and period, a current control unit generating a current command signal based on the varying speed command signal, a feedback control unit generating a correction signal based on a deviation between the varying speed command signal and a present rotational speed of the spindle motor and adding the correction signal to the current command signal, and a learning control unit calculating a disturbance component caused by cutting resistance based on the deviation every predetermined rotation angle of the spindle motor and, in synchronism with a rotation angle of the spindle motor corresponding to the varying speed command signal input into the current control unit, generating a compensation signal based on the disturbance component corresponding to the rotation angle and adding the compensation signal to the varying speed command signal.
    Type: Grant
    Filed: September 2, 2014
    Date of Patent: December 19, 2017
    Assignees: The University of Tokyo, DMG MORI SEIKI CO., LTD.
    Inventors: Hiroshi Fujimoto, Teruaki Ishibashi, Shinji Ishii, Koji Yamamoto, Yuki Terada
  • Publication number: 20170352855
    Abstract: An electric storage cell has an electric storage element and a covering film package. The covering film package houses the electric storage element and includes: a metal layer having a first principle face on the electric storage element side and a second principle face on the opposite side of the first principle face, an internal resin layer made of synthetic resin and laminated to the first principle face, and an external resin layer made of synthetic resin and laminated to the second principle face, with a slit formed at least in the external resin layer.
    Type: Application
    Filed: March 30, 2017
    Publication date: December 7, 2017
    Inventors: Takayuki TSUCHIYA, Hiromi SATO, Shinji ISHII
  • Publication number: 20170288275
    Abstract: An electrochemical device has a positive electrode, a negative electrode, a negative-electrode terminal, separators, and electrolytic solution, where the positive electrode, negative electrode, and separators are stacked and wound together. The negative-electrode terminal is made of metal, and has a joining part which is a part joined to the principal face of the negative-electrode collector. A protective tape is made of insulating material and attached to the negative electrode to cover the joining part. The negative electrode has a first width along the direction parallel with the axis of winding. The positive electrode has a second width, which is smaller than the first width, along the direction parallel with the axis of winding. The length of the protective tape along the direction parallel with the axis of winding is equal to or greater than the second width.
    Type: Application
    Filed: March 30, 2017
    Publication date: October 5, 2017
    Inventors: Katsunori YOKOSHIMA, Shinji ISHII, Koji KANO, Hiroki TAKAHASHI, Takatoshi NAGASE
  • Publication number: 20170278642
    Abstract: An electrochemical device includes a positive electrode, a negative electrode, and separators which are stacked and wound together, and electrolytic solution. A negative-electrode terminal is provided which is made of metal, and has a joining part which is a part joined to the principal face of the negative-electrode collector. The negative electrode has a first width, the positive electrode has a second width, which is smaller than the first width, and the separators have a third width, which is greater than the first width, along the direction parallel with the center axis of winding. The length of the joining part along the direction parallel with the center axis of winding is equal to or greater than the second width, but equal to or smaller than the third width.
    Type: Application
    Filed: March 17, 2017
    Publication date: September 28, 2017
    Inventors: Takatoshi NAGASE, Shinji ISHII, Koji KANO, Katsunori YOKOSHIMA