Patents by Inventor TAKESHI ENOMOTO

TAKESHI ENOMOTO 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: 11316223
    Abstract: A cylindrical battery with an opening sealing body that seals an opening of a battery can. The opening sealing body includes a valve member, a metal plate disposed on an inner side of the battery with respect to the valve member, and an annular insulating member interposed between the valve member and the metal plate. The valve member and the metal plate are connected to each other at respective central portions. The valve member has an annular thin-walled portion which is deformable when an internal pressure of the battery increases, and a recessed portion is formed by the thin-walled portion on the insulating member opposing side of the valve member. The insulating member has a section P1 that covers a surface, on the valve member side, of the metal plate, and the section P1 has a rib to be housed in the recessed portion.
    Type: Grant
    Filed: July 5, 2018
    Date of Patent: April 26, 2022
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Takeshi Enomoto, Kazutoshi Kohira
  • Patent number: 11128012
    Abstract: A battery module includes a plurality of battery blocks arranged in an X direction and thermal insulating boards that are each disposed between the battery blocks adjacent to each other in the X direction. The thermal insulating boards have a thermal insulating property. Each battery block includes a plurality of cylindrical batteries closely arranged in two or more rows in a staggered formation, with central axes of the cylindrical batteries being parallel to each other, and a block case entirely surrounding a periphery of a battery unit made up of the plurality of the cylindrical batteries so that the plurality of cylindrical batteries stays closely arranged.
    Type: Grant
    Filed: June 13, 2017
    Date of Patent: September 21, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yoshito Kaga, Takeshi Enomoto
  • Publication number: 20210126316
    Abstract: A battery block includes a plurality of cylindrical batteries, a battery holder having a plurality of accommodating parts into which axial one end portions of the cylindrical batteries are inserted, and a pair of terminal plates, that connect the cylindrical batteries in parallel. Each of the accommodating parts includes the partition wall formed along an outer peripheral surface of cylindrical battery, an extending portion that extends on the first end surface so as to surround a part of the first end surface on which the safety valve is disposed and is formed integrally with the partition wall, and an opening that exposes the part of the first end surface on which the safety valve is disposed.
    Type: Application
    Filed: January 5, 2021
    Publication date: April 29, 2021
    Inventors: Nobuyuki NAKASAWA, Takeshi Enomoto, Takashi Hasegawa
  • Publication number: 20210119286
    Abstract: A cylindrical battery with an opening sealing body that seals an opening of a battery can. The opening sealing body includes a valve member, a metal plate disposed on an inner side of the battery with respect to the valve member, and an annular insulating member interposed between the valve member and the metal plate. The valve member and the metal plate are connected to each other at respective central portions. The valve member has an annular thin-walled portion which is deformable when an internal pressure of the battery increases, and a recessed portion is formed by the thin-walled portion on the insulating member opposing side of the valve member. The insulating member has a section P1 that covers a surface, on the valve member side, of the metal plate, and the section P1 has a rib to be housed in the recessed portion.
    Type: Application
    Filed: July 5, 2018
    Publication date: April 22, 2021
    Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Takeshi Enomoto, Kazutoshi Kohira
  • Publication number: 20210119291
    Abstract: A cylindrical battery with an opening sealing body which includes a valve member, a metal plate disposed on an inner side of the battery with respect to the valve member, and an annular insulating member interposed between the valve member and the metal plate. The valve member and the metal plate are connected at respective central portions. The metal plate and the insulating member each have communicating holes. The valve member has a thin-walled portion which is deformable when an internal pressure of the battery increases. The insulating member has a section that covers a surface, on the valve member side, of the metal plate, a section that is provided subsequent to the section and covers a circumferential end face of the metal plate, and a section that is provided subsequent to the section and covers a surface, on an inner side of the battery, of the metal plate.
    Type: Application
    Filed: July 5, 2018
    Publication date: April 22, 2021
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Kazutoshi Kohira, Takeshi Enomoto
  • Publication number: 20210119299
    Abstract: A cylindrical battery with an opening sealing body that seals an opening of a battery can. The opening sealing body includes a valve member, a metal plate disposed on an inner side of the battery with respect to the valve member, and an annular insulating member interposed between the valve member and the metal plate. The valve member and the metal plate are connected to each other at respective central portions. The valve member has an annular thin-walled portion which is deformable when an internal pressure of the battery increases. The metal plate and the insulating member have respective holes which communicate with each other. The insulating member has a section that covers a surface, on the valve member side, of the metal plate, and a section that is provided subsequent to the section and covers a lateral surface of the hole of the metal plate.
    Type: Application
    Filed: July 5, 2018
    Publication date: April 22, 2021
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Takeshi Enomoto, Kazutoshi Kohira
  • Patent number: 10916744
    Abstract: A battery block includes a plurality of cylindrical batteries, a battery holder having a plurality of accommodating parts into which axial one end portions of the cylindrical batteries are inserted, and a pair of terminal plates that connect the cylindrical batteries in parallel. Each of the accommodating parts includes the partition wall formed along an outer peripheral surface of cylindrical battery, an extending portion that extends on the first end surface so as to surround a part of the first end surface on which the safety valve is disposed and is formed integrally with the partition wall, and an opening that exposes the part of the first end surface on which the safety valve is disposed.
    Type: Grant
    Filed: June 12, 2017
    Date of Patent: February 9, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Nobuyuki Nakasawa, Takeshi Enomoto, Takashi Hasegawa
  • Patent number: 10693112
    Abstract: A battery module includes: cells; and a battery holder made of a resin material that contains a filler in a resin matrix. In the resin material of the battery holder, the lower limit of the content of the filler is determined on the basis of the endothermic amount, and the upper limit of the content of the filler is determined on the basis of the viscosity. Another battery module includes: cylindrical cells; and a battery holder having a plurality of tubular first accommodation portions each having a substantially hexagonal hole and a plurality of tubular second accommodation portions each having a substantially polygonal (heptagonal or more) hole. In the battery holder, the first accommodation portions and second accommodation portions are arranged in a manner of log pile by sandwiching a first column including the first accommodation portions between second columns including the second accommodation portions.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: June 23, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Takeshi Enomoto, Keisuke Shimizu
  • Patent number: 10541397
    Abstract: A battery includes a bottomed cylindrical case body that accommodates an electrode body and a bottom-portion insulating plate (19) that is disposed between the electrode body and a bottom portion of the case body. The bottom portion of the case body has a gas discharge port that opens when an internal pressure of the battery reaches a predetermined pressure. The bottom-portion insulating plate (19) has a through hole. An aperture ratio, which is a ratio of an area of the through hole with respect to a total area of the insulating plate, is greater than or equal to 10% and less than or equal to 40%. A Young's modulus of the bottom-portion insulating plate at 25° C. is 10 GPa or greater.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: January 21, 2020
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Masato Fujikawa, Tomohiko Yokoyama, Keisuke Shimizu, Takeshi Enomoto
  • Publication number: 20200020893
    Abstract: A metal case has a cylindrical body section, an opening section at one end of the body section, the opening section having an opening, and a bottom section closing the other end of the body section. At least one of the body section and the opening section has a protrusion sticking outward in the direction of the radius of the body section.
    Type: Application
    Filed: September 25, 2019
    Publication date: January 16, 2020
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Akira Takano, Oose Okutani, Takeshi Enomoto, Masayoshi Yoshida
  • Publication number: 20200020897
    Abstract: An insulating plate for a secondary battery includes a wound electrode group, an electrolyte, a cylindrical battery case that houses the electrode group and the electrolyte, and a sealing body that seals an opening of the battery case and includes a discharge valve. The insulating plate is disposed between the electrode group and the sealing body and has a disk shape with a thickness T of 0.1 mm or more. The insulating plate has a first hole formed centrally therein and at least one second hole formed around the first hole so as to extend along the outer periphery of the disk shape. The ratio (=T/D) of the thickness T to a diameter D of the insulating plate is 0.016 or less, and the insulating plate has an opening ratio of 36% or less.
    Type: Application
    Filed: September 25, 2019
    Publication date: January 16, 2020
    Applicants: Panasonic Corporation, SANYO Electric Co., Ltd.
    Inventors: Takeshi Enomoto, Tomohiko Yokoyama, Yuji Yamagami, Kazutoshi Kohira
  • Publication number: 20200020923
    Abstract: A wound-type battery includes a wound electrode group having a first electrode and a second electrode with polarity opposite to the first electrode, an electrolyte, a battery case, a sealing plate that seals an opening of the battery case, an insulating plate that is disposed between the electrode group and the sealing plate and that has a hole, and a first tab that passes through the hole to electrically connect the first electrode and the sealing plate to each other. At least a part of a region of the first tab that extends through the hole to a sealing plate side is covered with a tab tape on a side facing the insulating plate. The tab tape includes at least a first adhesive layer and a second adhesive layer on a side opposite the first adhesive layer and is in contact with the first tab through the first adhesive layer.
    Type: Application
    Filed: September 26, 2019
    Publication date: January 16, 2020
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Masayoshi Yoshida, Oose Okutani, Takeshi Enomoto, Akira Takano
  • Publication number: 20200013994
    Abstract: A battery can has a cylindrical body section, an opening section at one end of the body section, and a bottom section closing the other end of the body section. An annularly grooved portion is formed by constriction near the open end of the opening section. The annularly grooved portion has an upper-groove section as the section closer to the open end than the narrowest section, which is positioned farthest inside, of the grooved portion, and also has a lower-groove section as the section closer to the bottom section than the narrowest section. The wall thickness T1 of the lower-groove section is larger than the wall thickness T2 of the body section.
    Type: Application
    Filed: September 20, 2019
    Publication date: January 9, 2020
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Oose Okutani, Takeshi Enomoto, Masayoshi Yoshida, Akira Takano
  • Patent number: 10511002
    Abstract: A battery module includes: a case body for storing a plurality of cells each having an exhaust gas valve; an exhaust passage for releasing, to the outside of the case body, the high-pressure and high-temperature exhaust gas having come from the cells; and a flow route changing unit that is disposed in the exhaust passage, has a hole for passing the exhaust gas, and elongates the flow route of the exhaust gas from the upstream side to the downstream side of the exhaust passage by changing the flow direction of the exhaust gas a plurality of times in a zigzag manner along at least one of the width and height directions of the exhaust passage. The flow route changing unit includes a plurality of flat plates each having a hole for passing the exhaust gas.
    Type: Grant
    Filed: February 17, 2016
    Date of Patent: December 17, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Keisuke Shimizu, Daisuke Kishii, Takeshi Enomoto
  • Publication number: 20190267686
    Abstract: A battery module includes a battery assembly and a thermally-conductive member to hold or support battery assembly. The battery assembly has a plurality of first batteries and a plurality of second batteries that are alternately stacked. The thermally-conductive member includes a first component and a second component that are each disposed along a stacking direction of the batteries. The first component has a heat resistance to the second batteries higher than to the first batteries. The second component has a heat resistance to the first batteries higher than to the second batteries.
    Type: Application
    Filed: July 6, 2017
    Publication date: August 29, 2019
    Inventors: KEISUKE SHIMIZU, AKIRA TAKANO, SHINYA MOTOKAWA, YOSHITO KAGA, TAKESHI ENOMOTO
  • Publication number: 20190181399
    Abstract: A battery module includes a plurality of battery blocks arranged in an X direction and thermal insulating boards that are each disposed between the battery blocks adjacent to each other in the X direction. The thermal insulating boards have a thermal insulating property. Each battery block includes a plurality of cylindrical batteries closely arranged in two or more rows in a staggered formation, with central axes of the cylindrical batteries being parallel to each other, and a block case entirely surrounding a periphery of a battery unit made up of the plurality of the cylindrical batteries so that the plurality of cylindrical batteries stays closely arranged.
    Type: Application
    Filed: June 13, 2017
    Publication date: June 13, 2019
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yoshito KAGA, Takeshi ENOMOTO
  • Publication number: 20190181400
    Abstract: A battery block includes a plurality of cylindrical batteries, a battery holder having a plurality of accommodating parts into which axial one end portions of the cylindrical batteries are inserted, and a pair of terminal plates that connect the cylindrical batteries in parallel. Each of the accommodating parts includes the partition wall formed along an outer peripheral surface of cylindrical battery, an extending portion that extends on the first end surface so as to surround a part of the first end surface on which the safety valve is disposed and is formed integrally with the partition wall, and an opening that exposes the part of the first end surface on which the safety valve is disposed.
    Type: Application
    Filed: June 12, 2017
    Publication date: June 13, 2019
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Nobuyuki NAKASAWA, Takeshi ENOMOTO, Takashi HASEGAWA
  • Publication number: 20180205048
    Abstract: A battery module includes: cells; and a battery holder made of a resin material that contains a filler in a resin matrix. In the resin material of the battery holder, the lower limit of the content of the filler is determined on the basis of the endothermic amount, and the upper limit of the content of the filler is determined on the basis of the viscosity. Another battery module includes: cells; and a battery holder having a plurality of tubular first accommodation portions each having a substantially hexagonal hole and a plurality of tubular second accommodation portions each having a substantially polygonal (heptagonal or more) hole. In the battery holder, the first accommodation portions and second accommodation portions are arranged in a manner of log pile by sandwiching a first column including the first accommodation portions between second columns including the second accommodation portions.
    Type: Application
    Filed: December 20, 2016
    Publication date: July 19, 2018
    Inventors: TAKESHI ENOMOTO, KEISUKE SHIMIZU
  • Publication number: 20170317326
    Abstract: A battery includes a bottomed cylindrical case body that accommodates an electrode body and a bottom-portion insulating plate (19) that is disposed between the electrode body and a bottom portion of the case body. The bottom portion of the case body has a gas discharge port that opens when an internal pressure of the battery reaches a predetermined pressure. The bottom-portion insulating plate (19) has a through hole. An aperture ratio, which is a ratio of an area of the through hole with respect to a total area of the insulating plate, is greater than or equal to 10% and less than or equal to 40%. A Young's modulus of the bottom-portion insulating plate at 25° C. is 10 GPa or greater.
    Type: Application
    Filed: September 17, 2015
    Publication date: November 2, 2017
    Applicant: SANYO Electric Co., Ltd.
    Inventors: Masato Fujikawa, Tomohiko Yokoyama, Keisuke Shimizu, Takeshi Enomoto
  • Publication number: 20170237055
    Abstract: A battery module includes: a case body for storing a plurality of cells each having an exhaust gas valve; an exhaust passage for releasing, to the outside of the case body, the high-pressure and high-temperature exhaust gas having come from the cells; and a flow route changing unit that is disposed in the exhaust passage, has a hole for passing the exhaust gas, and elongates the flow route of the exhaust gas from the upstream side to the downstream side of the exhaust passage by changing the flow direction of the exhaust gas a plurality of times in a zigzag manner along at least one of the width and height directions of the exhaust passage. The flow route changing unit includes a plurality of flat plates each having a hole for passing the exhaust gas.
    Type: Application
    Filed: February 17, 2016
    Publication date: August 17, 2017
    Inventors: KEISUKE SHIMIZU, DAISUKE KISHII, TAKESHI ENOMOTO