Patents by Inventor Kenji Nansaka

Kenji Nansaka 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: 9672993
    Abstract: An electrical storage device includes a casing that has an opening, an electrode assembly that is placed inside the casing, a terminal plate that is electrically connected to the electrode assembly, and a holder that is provided to surround the terminal plate, the terminal plate having a step or a slope in an area in which the terminal plate comes in contact with the holder.
    Type: Grant
    Filed: November 11, 2013
    Date of Patent: June 6, 2017
    Assignee: JM ENERGY CORPORATION
    Inventors: Kenji Nansaka, Takashi Chiba
  • Patent number: 9576746
    Abstract: An energy storage module in which a plurality of energy storage cells including electrode terminals are stacked, includes a bus bar that electrically connects a plurality of electrode terminals, a conductive member that is secured on the bus bar, a detection section that detects a voltage of each of the energy storage cells, and a wiring board, a wire that is electrically connected to the detection section, and a pad that is connected to the wire being formed on the wiring board, the conductive member coming in contact with the pad.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: February 21, 2017
    Assignee: JM Energy Corporation
    Inventors: Naoki Ueno, Kazuhiro Ohhashi, Tomohiro Ohshima, Kenji Nansaka
  • Publication number: 20160247637
    Abstract: An electrical storage device includes a casing that has an opening, an electrode assembly that is placed inside the casing, a terminal plate that is electrically connected to the electrode assembly, and a holder that is provided to surround the terminal plate, the terminal plate having a step or a slope in an area in which the terminal plate comes in contact with the holder.
    Type: Application
    Filed: November 11, 2013
    Publication date: August 25, 2016
    Applicant: JM ENERGY CORPORATION
    Inventors: Kenji NANSAKA, Takashi CHIBA
  • Patent number: 9368764
    Abstract: A sealed battery includes a sealing plate 13 sealing a mouth of an outer can, an external terminal 16 attached to the sealing plate 13 and having a connecting terminal 23, and a current interruption mechanism 18 interrupting current in response to pressure increase in the outer can that is installed in a conductive pathway electrically connecting the connecting terminal 23 and an electrode assembly. In the connecting terminal 23, a through-hole 23b continuing to the space on the current interruption mechanism 18 at the side corresponding to the outside of the battery is formed. The through-hole 23b is sealed with a terminal stopper 30 made of an elastic member so as to form a closed space between the terminal stopper 30 and current interruption mechanism 18. An electrolyte or washing solution hardly enters the current interruption mechanism during the manufacture can be provided.
    Type: Grant
    Filed: October 8, 2012
    Date of Patent: June 14, 2016
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Kenji Nansaka, Yasuhiro Yamauchi, Toshiyuki Nohma
  • Patent number: 9202637
    Abstract: The present invention has as its object the provision of a lithium ion capacitor having high capacity and high output characteristics and also having high safety that allows suppression of an increase in surface temperature even when an internal short circuit accidentally occurs. The lithium ion capacitor of the present invention comprises: a lithium ion capacitor element formed by overlaying a positive electrode sheet and a negative electrode sheet on top of one another with a separator interposed therebetween; an electrolyte solution; and an outer container that contains the lithium ion capacitor element and the electrolyte solution, a porous layer is formed on an outer surface of the lithium ion capacitor element, and the lithium ion capacitor satisfies following relational expressions (1) and (2): 35?T×R/C??relational expression (1): 0.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: December 1, 2015
    Assignee: JM Energy Corporation
    Inventors: Kenji Nansaka, Makoto Taguchi
  • Publication number: 20150325885
    Abstract: A method for producing an electrical storage device includes winding a positive electrode, a negative electrode, and a lithium ion source to form a wound element that has a flat part and a curved part, the lithium ion source including a plurality of parts that are arranged in a winding direction through a gap, the wound element being formed so that the gap is situated in the curved part.
    Type: Application
    Filed: December 2, 2013
    Publication date: November 12, 2015
    Applicant: JM ENERGY CORPORATION
    Inventors: Kenji NANSAKA, Takashi CHIBA
  • Patent number: 9093228
    Abstract: A method of producing an electric storage device includes a fastening that includes fastening a laminate that includes a lithium foil and a metal foil to at least one of a first separator and a second separator using a bonding member, and a winding that includes winding the first separator, the second separator, the laminate, a cathode, and an anode to obtain a wound element, one of the first separator and the second separator being disposed between the cathode and the anode.
    Type: Grant
    Filed: December 24, 2010
    Date of Patent: July 28, 2015
    Assignee: JM Energy Corporation
    Inventors: Motoki Mizukami, Kenji Nansaka, Nobuo Ando
  • Patent number: 9030804
    Abstract: Disclosed is an accumulator device that can prevent aluminum forming an outer container from forming an alloy with lithium even when fine lithium metal powder is isolated from a lithium ion supply source to adhere to the outer container. The accumulator device has an outer container at least a part of which is formed of aluminum or an aluminum alloy, a positive electrode and a negative electrode that are arranged in the outer container, and an electrolytic solution injected into the outer container and containing a lithium salt, wherein the negative electrode and/or the positive electrode is doped with a lithium ion by electrochemical contact of a lithium ion supply source arranged in the outer container with the negative electrode and/or the positive electrode, and the portion formed of aluminum or the aluminum alloy in the outer container is set to a positive potential.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: May 12, 2015
    Assignee: JM Energy Corporation
    Inventors: Kenji Nansaka, Nobuo Ando
  • Publication number: 20140120392
    Abstract: An energy storage module in which a plurality of energy storage cells including electrode terminals are stacked, includes a bus bar that electrically connects a plurality of electrode terminals, a conductive member that is secured on the bus bar, a detection section that detects a voltage of each of the energy storage cells, and a wiring board, a wire that is electrically connected to the detection section, and a pad that is connected to the wire being formed on the wiring board, the conductive member coming in contact with the pad.
    Type: Application
    Filed: April 12, 2012
    Publication date: May 1, 2014
    Applicant: JM Energy Corporation
    Inventors: Naoki Ueno, Kazuhiro Ohhashi, Tomohiro Ohshima, Kenji Nansaka
  • Patent number: 8603193
    Abstract: A method for producing a prismatic secondary cell housing a flat electrode assembly includes disposing a first current-collecting member onto a first to-be-welded portion at a flat portion of an edge of the electrode assembly where a core-body exposed portion of the first electrode protrudes. A first receiving member is disposed onto a plane opposing the flat portion. The first current-collecting member, the core-body exposed portion, and the first receiving member are resistive-welded with the core-body exposed portion between the other members. A second current-collecting member is disposed onto a second to-be-welded portion at a position of the flat portion distanced from the first to-be-welded portion while avoiding contact between the collecting members. A conductive connecting member is placed between the collecting members or between the receiving members. The conductive connecting member and its abutting members are welded. One of the members is electrificably connected to an external output terminal.
    Type: Grant
    Filed: March 5, 2010
    Date of Patent: December 10, 2013
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Takashi Kondou, Hironobu Aratani, Kenji Inagaki, Yukio Asayama, Yasuhiro Yamauchi, Kenji Nansaka
  • Patent number: 8563162
    Abstract: A sealed battery including: an electrode assembly 11 having multiple positive electrode substrates exposed at one end and negative electrode substrates exposed at the other end; and collectors 181 and collector receiving parts 183 that are resistance-welded on both sides of the multiple positive or the multiple negative electrode substrates or both, grooves 23 being formed around the resistance-welded portion of at least one of the collector 181 and the collector receiving part 183. Due to the spattered particles 26 generated during the resistance-welding being captured within the grooves 23, few particles burst into the inside of the electrode assembly 11 or into the outside.
    Type: Grant
    Filed: August 21, 2012
    Date of Patent: October 22, 2013
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Yasutomo Taniguchi, Kenji Nansaka, Yasuhiro Yamauchi, Toshiyuki Nohma
  • Publication number: 20130201606
    Abstract: The present invention has as its object the provision of a lithium ion capacitor having high capacity and high output characteristics and also having high safety that allows suppression of an increase in surface temperature even when an internal short circuit accidentally occurs. The lithium ion capacitor of the present invention comprises: a lithium ion capacitor element formed by overlaying a positive electrode sheet and a negative electrode sheet on top of one another with a separator interposed therebetween; an electrolyte solution; and an outer container that contains the lithium ion capacitor element and the electrolyte solution, a porous layer is formed on an outer surface of the lithium ion capacitor element, and the lithium ion capacitor satisfies following relational expressions (1) and (2): 35?T×R/C??relational expression (1): 0.
    Type: Application
    Filed: June 28, 2011
    Publication date: August 8, 2013
    Applicant: JM Energy Corporation
    Inventors: Kenji Nansaka, Makoto Taguchi
  • Patent number: 8480763
    Abstract: A sealed battery includes a sealing plate 13 sealing a mouth of an outer can, an external terminal 16 attached to the sealing plate 13 and having a connecting terminal 23, and a current interruption mechanism 18 interrupting current in response to pressure increase in the outer can that is installed in a conductive pathway electrically connecting the connecting terminal 23 and an electrode assembly. In the connecting terminal 23, a through-hole 23b continuing to the space on the current interruption mechanism 18 at the side corresponding to the outside of the battery is formed. The through-hole 23b is sealed with a terminal stopper 30 made of an elastic member so as to form a closed space between the terminal stopper 30 and current interruption mechanism 18. An electrolyte or washing solution hardly enters the current interruption mechanism during the manufacture can be provided.
    Type: Grant
    Filed: October 8, 2012
    Date of Patent: July 9, 2013
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Kenji Nansaka, Yasuhiro Yamauchi, Toshiyuki Nohma
  • Patent number: 8440348
    Abstract: The external terminal 19 has sword-guard portion 191 provided with a terminal portion 193 formed at one end thereof and a cylindrical crimping member 192 formed at another end thereof, the cylindrical crimping member 192 being inserted through openings each formed at a first insulating member 211, the opening-sealing plate 13, a second insulating member 212 and the collector 181, and being crimped in a diameter-enlarging direction, so that the sword-guard portion 191 of the external terminal 19, the opening-sealing plate 13 and the collector 181 are mechanically-fixed and a thin-walled portion made thinner than other portions formed in a tip portion of the cylindrical crimping member 192 is adhered to the collector, and the thin-walled portion 194 and the collector being welded with a high energy beam.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: May 14, 2013
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Yasuhiro Yamauchi, Kenji Nansaka, Toshiyuki Nohma
  • Publication number: 20120315526
    Abstract: A sealed battery including: an electrode assembly 11 having multiple positive electrode substrates exposed at one end and negative electrode substrates exposed at the other end; and collectors 181 and collector receiving parts 183 that are resistance-welded on both sides of the multiple positive or the multiple negative electrode substrates or both, grooves 23 being formed around the resistance-welded portion of at least one of the collector 181 and the collector receiving part 183. Due to the spattered particles 26 generated during the resistance-welding being captured within the grooves 23, few particles burst into the inside of the electrode assembly 11 or into the outside.
    Type: Application
    Filed: August 21, 2012
    Publication date: December 13, 2012
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Yasutomo Taniguchi, Kenji Nansaka, Yasuhiro Yamauchi, Toshiyuki Nohma
  • Publication number: 20120293914
    Abstract: Disclosed is an accumulator device that can prevent aluminum forming an outer container from forming an alloy with lithium even when fine lithium metal powder is isolated from a lithium ion supply source to adhere to the outer container. The accumulator device has an outer container at least a part of which is formed of aluminum or an aluminum alloy, a positive electrode and a negative electrode that are arranged in the outer container, and an electrolytic solution injected into the outer container and containing a lithium salt, wherein the negative electrode and/or the positive electrode is doped with a lithium ion by electrochemical contact of a lithium ion supply source arranged in the outer container with the negative electrode and/or the positive electrode, and the portion formed of aluminum or the aluminum alloy in the outer container is set to a positive potential.
    Type: Application
    Filed: December 3, 2010
    Publication date: November 22, 2012
    Applicant: JM Energy Corporation
    Inventors: Kenji Nansaka, Nobuo Ando
  • Publication number: 20120281339
    Abstract: A method of producing an electric storage device includes a fastening that includes fastening a laminate that includes a lithium foil and a metal foil to at least one of a first separator and a second separator using a bonding member, and a winding that includes winding the first separator, the second separator, the laminate, a cathode, and an anode to obtain a wound element, one of the first separator and the second separator being disposed between the cathode and the anode.
    Type: Application
    Filed: December 24, 2010
    Publication date: November 8, 2012
    Applicant: JM Energy Corporation
    Inventors: Motoki Mizukami, Kenji Nansaka, Nobuo Ando
  • Patent number: 8304109
    Abstract: The sealed battery includes a sealing plate 13 sealing a mouth of an outer can, an external terminal 16 attached to the sealing plate 13 and having a connecting terminal 23, and a current interruption mechanism 18interrupting current in response to pressure increase in the outer can that is installed in a conductive pathway electrically connecting the connecting terminal 23 and an electrode assembly. In the connecting terminal 23, a through-hole 23b continuing to the space on the current interruption mechanism 18 at the side corresponding to the outside of the battery is formed. The through-hole 23b is sealed with a terminal stopper 30 made of an elastic member so as to form a closed space between the terminal stopper 30 and current interruption mechanism 18. An electrolyte or washing solution hardly enters the current interruption mechanism during the manufacture can be provided.
    Type: Grant
    Filed: February 24, 2010
    Date of Patent: November 6, 2012
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Kenji Nansaka, Yasuhiro Yamauchi, Toshiyuki Nohma
  • Patent number: 8298705
    Abstract: The sealed battery 10 includes an electrolyte pour hole 15 passing through the sealing plate 12; a rivet 16 having a shank part 16a, a flange part 16b covering a peripheral surface of the electrolyte pour hole 15, and a crimping part 16c in the electrolyte pour hole 15; and a gasket 18 interposed between the electrolyte pour hole 15 and the rivet 16 and adhering to the peripheral surface of the electrolyte pour hole 15 and to a back side of the flange part 16b of the rivet 6; on the peripheral surface of the electrolyte pour hole 15, an inner annular first convex part 17a and an outer annular second convex part 17b are formed; and on the back side of the flange part 16b of the rivet 16, an annular third convex part 16d is formed so as to be superimposed over the second convex part 17b.
    Type: Grant
    Filed: May 13, 2010
    Date of Patent: October 30, 2012
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Yusuke Itoh, Kenji Nansaka, Yasuhiro Yamauchi
  • Patent number: D758328
    Type: Grant
    Filed: June 17, 2013
    Date of Patent: June 7, 2016
    Assignee: JM Energy Corporation
    Inventor: Kenji Nansaka