Patents by Inventor Kouichi Kajiwara

Kouichi Kajiwara 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: 20220388396
    Abstract: In an information display system that allows an observer to visually recognize image information displayed on an image display apparatus by superimposing the image on an external scenery through a window glass and a combiner, the system includes a light source apparatus that supplies light having a specific polarization direction at a narrow divergence angle to the image display apparatus, a reflection position of the image is changed by arranging a position and an angle of the image display apparatus with respect to the window glass so that the position and the angle change while a monitoring angle of the image visually recognized by the observer is constant, and a virtual image display distance of the image visually recognized by the observer and a size of the image of the virtual image can be changed by the arrangement state in the vehicle.
    Type: Application
    Filed: October 7, 2020
    Publication date: December 8, 2022
    Applicant: Maxell, Ltd.
    Inventors: Koji HIRATA, Toshinori SUGIYAMA, Koji FUJITA, Kouichi KAJIWARA, Eiji TAKAGI
  • Publication number: 20180097207
    Abstract: The purpose of the present invention is to allow a gas to be stably discharged from a cracking valve even if a battery lid is deformed toward a wound group side. In a rectangular secondary battery of the present invention, a curved surface portion of a flat wound group is disposed on the side of an opening of a battery can, and the opening is sealed with a battery lid having a cracking valve and a liquid injection port. At least a protruding portion having a facing surface positioned on a curved surface portion side with respect to the cracking valve is disposed on the battery lid between the liquid injection port and the cracking valve.
    Type: Application
    Filed: April 22, 2016
    Publication date: April 5, 2018
    Inventors: Akira UNNO, Kouichi KAJIWARA, Hiroaki EGAWA
  • Publication number: 20180062123
    Abstract: Provided is a rectangular secondary cell enabling seal performance of a gasket to be improved with a simple structure without enlarging a shaft of a terminal. A rectangular secondary cell according to the present invention includes a cell can housing a winding group and having an opening portion, a lid provided with a positive electrode terminal electrically connected to the winding group and closing the opening portion, and a gasket having an interposed portion interposed between the lid and a lower surface of the positive electrode terminal. In the gasket, an external shape of the interposed portion is smaller than an external shape of the lower surface of the positive electrode terminal.
    Type: Application
    Filed: March 28, 2016
    Publication date: March 1, 2018
    Inventors: Kohtaroh IKEDA, Kouichi KAJIWARA
  • Publication number: 20170338448
    Abstract: A prismatic secondary battery includes a battery case in a prismatic shape and a battery cover which seals up an opening part of the battery case. The battery cover has a convex part which projects toward the inside of the battery case, faces an inner surface of a side wall part of the battery case, and extends continuously along the entire periphery of the side wall part. Cover thickness of a contact part of the battery cover which is in contact with the upper end of the side wall part of the battery case at a position outside the convex part is greater than ½ of cover thickness of a blockage part blocking up an opening part at a position inside the convex part and is less than the cover thickness of the blockage part.
    Type: Application
    Filed: August 8, 2017
    Publication date: November 23, 2017
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Kouichi KAJIWARA, Hayato KOGUCHI, Takeshi HIZONO, Hiroaki EGAWA
  • Patent number: 9812676
    Abstract: A prismatic secondary battery includes a battery case in a prismatic shape and a battery cover which seals up an opening part of the battery case. The battery cover has a convex part which projects toward the inside of the battery case, faces an inner surface of a side wall part of the battery case, and extends continuously along the entire periphery of the side wall part. Cover thickness of a contact part of the battery cover which is in contact with the upper end of the side wall part of the battery case at a position outside the convex part is greater than ½ of cover thickness of a blockage part blocking up an opening part at a position inside the convex part and is less than the cover thickness of the blockage part.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: November 7, 2017
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Kouichi Kajiwara, Hayato Koguchi, Takeshi Hizono, Hiroaki Egawa
  • Patent number: 9748554
    Abstract: An electric storage device includes a container which houses an electric generating element, and a sealing plug which seals a liquid injecting hole into which an electrolyte is injected. The liquid injecting hole is provided in a bottom surface of a recessed portion provided to be recessed on one side surface of the container. The sealing plug includes an inserting portion to be inserted into the liquid injecting hole and a fitting portion to be fitted into the recessed portion. At least either a rim portion of the fitting portion or an opening rim portion of the recessed portion is provided with a plurality of plastic deformation portions.
    Type: Grant
    Filed: April 12, 2013
    Date of Patent: August 29, 2017
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Sho Saimaru, Kinya Aota, Kouichi Kajiwara
  • Publication number: 20160181577
    Abstract: In a secondary battery (C1), a collector plate (4A) and an external terminal (8A) are caulked/fixed to a battery lid (6) by a connection terminal (12A), and the connection terminal (12A) includes a caulking portion (16A), and the caulking portion (16) includes a pressure-contact portion (18A) for forming a contact surface (162A, 44A, 84A) by pressurization between the collector plate (4A) and/or the external terminal (8A), and a contact portion (CP) between the collector plate (4A) and/or the external terminal (8A) and an outer peripheral side wall (161A) of the caulking portion (16A) is welded at least along the pressure-contact portion (18A).
    Type: Application
    Filed: August 22, 2013
    Publication date: June 23, 2016
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Kouichi KAJIWARA, Kohtaro IKEDA, Hiroaki EGAWA
  • Publication number: 20160164066
    Abstract: An electric storage device includes a container which houses an electric generating element, and a sealing plug which seals a liquid injecting hole into which an electrolyte is injected. The liquid injecting hole is provided in a bottom surface of a recessed portion provided to be recessed on one side surface of the container. The sealing plug includes an inserting portion to be inserted into the liquid injecting hole and a fitting portion to be fitted into the recessed portion. At least either a rim portion of the fitting portion or an opening rim portion of the recessed portion is provided with a plurality of plastic deformation portions.
    Type: Application
    Filed: April 12, 2013
    Publication date: June 9, 2016
    Inventors: Sho SAIMARU, Kinya AOTA, Kouichi KAJIWARA
  • Patent number: 9252453
    Abstract: A rechargeable battery includes a battery pack, a battery lid, and an electrode and an external terminal connected by an electricity connector. A laminated portion of the electrodes comprising a lump of wound electrodes is separated into two bundle electrode connecting portions from a center side of the wound electrodes in the thickness direction outward of the battery pack. The electricity collector is provided with a main plate joined to the bundles, a rib plate bent from the main plate and extending outward of the battery pack, a mounting plate extending along the inside of the battery lid, and a connecting plate bent from of the mounting plate and extending toward a bottom surface of the battery pack. A coupling plate is inclined from this bottom end of the connecting plate toward the bundles and is coupled to one end of a joint plate on the battery lid side.
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: February 2, 2016
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventor: Kouichi Kajiwara
  • Publication number: 20150228936
    Abstract: A prismatic secondary battery includes a battery case in a prismatic shape and a battery cover which seals up an opening part of the battery case. The battery cover has a convex part which projects toward the inside of the battery case, faces an inner surface of a side wall part of the battery case, and extends continuously along the entire periphery of the side wall part. Cover thickness of a contact part of the battery cover which is in contact with the upper end of the side wall part of the battery case at a position outside the convex part is greater than ½ of cover thickness of a blockage part blocking up an opening part at a position inside the convex part and is less than the cover thickness of the blockage part.
    Type: Application
    Filed: August 31, 2012
    Publication date: August 13, 2015
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Kouichi Kajiwara, Hayato Koguchi, Takeshi Hizono, Hiroaki Egawa
  • Patent number: 8986874
    Abstract: A wound electrode body is fabricated by laminating and winding positive and negative electrode sheets together with a separator therebetween for insulation. On both positive and negative electrode side ends of the wound electrode body, laminates of current-collecting foil layered portions of the electrode sheets are bent or folded f toward the outer peripheral side to be separated into two. The separated laminates and forked connector leaves are overlapped and clamped between an ultrasonic chip and an anvil. Then, they are welded. The forked connector leaves are arranged such that no opposing forked connector leaf is present in the direction of a line normal to the forked connector leaf, so that the anvil does not have to be cantilevered. This allows welding by using the ultrasonic chip and the anvil without interfering with the collector rs. As a result, the quality of welding is improved.
    Type: Grant
    Filed: February 16, 2011
    Date of Patent: March 24, 2015
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Kazuaki Urano, Fujio Hirano, Kouichi Kajiwara, Kiyoyuki Sekine, Yasuhiro Matsuoka, Suguru Watashi
  • Publication number: 20140120396
    Abstract: A rechargeable battery includes a battery pack, a battery lid, and an electrode and an external terminal connected by an electricity connector. A laminated portion of the electrodes comprising a lump of wound electrodes is separated into two bundle electrode connecting portions from a center side of the wound electrodes in the thickness direction outward of the battery pack. The electricity collector is provided with a main plate joined to the bundles, a rib plate bent from the main plate and extending outward of the battery pack, a mounting plate extending along the inside of the battery lid, and a connecting plate bent from of the mounting plate and extending toward a bottom surface of the battery pack. A coupling plate is inclined from this bottom end of the connecting plate toward the bundles and is coupled to one end of a joint plate on the battery lid side.
    Type: Application
    Filed: June 15, 2012
    Publication date: May 1, 2014
    Applicant: Hitachi Vehicle Energy Ltd.
    Inventor: Kouichi Kajiwara
  • Patent number: 8673470
    Abstract: A secondary cell includes: an electrode roll in which a positive foil on which a positive-electrode material is coated and a negative foil on which a negative-electrode material is coated are winded through a separator into a flat shape around a winding core; a case in which the electrode roll is housed; a cover which seals the case; a positive terminal and a negative terminal provided on the cover; a positive electrode current collector plate that is electrically connected to the positive foil of the electrode roll and the positive terminal and held by the cover; and a negative electrode current collector plate that is electrically connected to the negative foil of the electrode roll and the negative terminal and held by the cover. The positive electrode current collector plate and the negative electrode current collector plate are each connected to the winding core.
    Type: Grant
    Filed: February 7, 2011
    Date of Patent: March 18, 2014
    Assignee: Hitachi Vehicle Energy, Ltd.
    Inventors: Kinya Aota, Toshiro Fujita, Kouichi Kajiwara, Masaaki Iwasa
  • Publication number: 20130071728
    Abstract: A highly-reliable secondary battery is provided. The secondary battery is configured as below. A battery lid 1 is formed with a cylindrical projection 1a projecting toward an insulating member 3. The cylindrical projection 1a is secured to the insulating member 3 (a caulking portion 1A) by caulking so as to be bent outwardly at a position inside a projecting insertion hole 3b formed in the insulating member 3. A tip portion of a connecting pin 5 inserted through the pin insertion hole is caulked (a caulking portion 5d) to establish conduction between the connecting pin 5 and an external terminal 4 and to secure the external terminal 4, the insulating member 3, a gasket 2 and the connecting pin 5 to the battery lid 1. Thus, a terminal portion 15 does not turn.
    Type: Application
    Filed: February 23, 2011
    Publication date: March 21, 2013
    Inventors: Hideyuki Shibanuma, Kouichi Kajiwara
  • Publication number: 20110236750
    Abstract: A secondary cell of an embodiment of the present invention comprises: a cell case of a rectangular cuboid shape having an opening; a cell lid configured to seal the opening in the cell case; an electrode assembly provided in a space defined by the cell case and the cell lid; and an insulation cover configured to electrically insulate between the cell case and the electrode assembly. The insulation cover comprises: a bottom face part facing the opening in the cell case and having four sides; side face parts formed along at least two opposite sides of the four sides of the bottom face part; and bend parts provided in such a manner that boundaries between the bottom face part and the side face parts bend as the electrode assembly is inserted into the cell case.
    Type: Application
    Filed: February 18, 2011
    Publication date: September 29, 2011
    Inventors: Ryuji KOHNO, Yutaka Sato, Kouichi Kajiwara, Mitsuru Koseki
  • Publication number: 20110223454
    Abstract: A wound electrode body is fabricated by laminating and winding positive and negative electrode sheets together with a separator therebetween for insulation. On both positive and negative electrode side ends of the wound electrode body, laminates of current-collecting foil layered portions of the electrode sheets are bent or folded f toward the outer peripheral side to be separated into two. The separated laminates and forked connector leaves are overlapped and clamped between an ultrasonic chip and an anvil. Then, they are welded. The forked connector leaves are arranged such that no opposing forked connector leaf is present in the direction of a line normal to the forked connector leaf, so that the anvil does not have to be cantilevered. This allows welding by using the ultrasonic chip and the anvil without interfering with the collector rs. As a result, the quality of welding is improved.
    Type: Application
    Filed: February 16, 2011
    Publication date: September 15, 2011
    Inventors: Kazuaki Urano, Fujio Hirano, Kouichi Kajiwara, Kiyoyuki Sekine, Yasuhiro Matsuoka, Suguru Watashi
  • Publication number: 20110195286
    Abstract: A secondary cell includes: an electrode roll in which a positive foil on which a positive-electrode material is coated and a negative foil on which a negative-electrode material is coated are winded through a separator into a flat shape around a winding core; a case in which the electrode roll is housed; a cover which seals the case; a positive terminal and a negative terminal provided on the cover; a positive electrode current collector plate that is electrically connected to the positive foil of the electrode roll and the positive terminal and held by the cover; and a negative electrode current collector plate that is electrically connected to the negative foil of the electrode roll and the negative terminal and held by the cover. The positive electrode current collector plate and the negative electrode current collector plate are each connected to the winding core.
    Type: Application
    Filed: February 7, 2011
    Publication date: August 11, 2011
    Applicant: Hitachi Vehicle Energy, Ltd.
    Inventors: Kinya AOTA, Toshiro Fujita, Kouichi Kajiwara, Masaaki Iwasa
  • Patent number: D642978
    Type: Grant
    Filed: February 14, 2011
    Date of Patent: August 9, 2011
    Assignee: Hitachi Vehicle Energy, Ltd
    Inventors: Yutaka Sato, Ryuji Kono, Mitsuru Koseki, Hidemasa Kawai, Hideyuki Shibanuma, Naoki Kimura, Keisuke Sawada, Fujio Hirano, Takuro Tsunaki, Takenori Ishizu, Kiyoyuki Sekine, Kinya Aota, Kouichi Kajiwara, Sho Saimaru
  • Patent number: D644176
    Type: Grant
    Filed: February 14, 2011
    Date of Patent: August 30, 2011
    Assignee: Hitachi Vehicle Energy, Ltd.
    Inventors: Yutaka Sato, Ryuji Kono, Mitsuru Koseki, Hidemasa Kawai, Hideyuki Shibanuma, Naoki Kimura, Keisuke Sawada, Fujio Hirano, Takuro Tsunaki, Takenori Ishizu, Kiyoyuki Sekine, Kinya Aota, Kouichi Kajiwara, Sho Saimaru
  • Patent number: D644178
    Type: Grant
    Filed: February 14, 2011
    Date of Patent: August 30, 2011
    Assignee: Hitachi Vehicle Energy, Ltd.
    Inventors: Yutaka Sato, Ryuji Kono, Mitsuru Koseki, Hidemasa Kawai, Hideyuki Shibanuma, Naoki Kimura, Keisuke Sawada, Fujio Hirano, Takuro Tsunaki, Takenori Ishizu, Kiyoyuki Sekine, Kinya Aota, Kouichi Kajiwara, Sho Saimaru