Patents by Inventor Masanobu Takeuchi

Masanobu Takeuchi 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: 20210119289
    Abstract: This non-aqueous electrolyte secondary battery that is an example of an embodiment comprises a winding type electrode body for which a positive electrode and a negative electrode are wound with a separator interposed. The electrode body has a positive electrode lead. The positive electrode lead has: a lead base made of metal that includes a first surface joined to the positive electrode, and a second surface on the side opposite to the first surface; and an insulating ceramic layer principally comprising an inorganic compound and formed over a range within the second surface of the lead base so as to face the negative electrode with at least the separator interposed therebetween.
    Type: Application
    Filed: April 2, 2019
    Publication date: April 22, 2021
    Applicants: SANYO Electric Co., Ltd., Panasonic Corporation
    Inventors: Natsuhiko Mukai, Satoshi Yamamoto, Masaki Deguchi, Taisuke Yamamoto, Atsushi Ueda, Masanobu Takeuchi
  • Publication number: 20210057710
    Abstract: A nonaqueous electrolyte secondary battery (10) according to one embodiment of the present disclosure is provided with: an electrode body (14) which is obtained by winding a positive electrode (30) and a negative electrode (40), with a separator (50) being interposed therebetween; a nonaqueous electrolyte; and a battery case (15) which is formed of a metal and contains the electrode body (14) and the nonaqueous electrolyte. The negative electrode (40) comprises a negative electrode collector (41) and a negative electrode active material layer (42) that contains graphite particles as a negative electrode active material; the outer circumferential surface of the electrode body (14) is provided with an exposure part (43) from which the negative electrode collector (41) is exposed so as to be in contact with the inner circumferential surface of the battery case (15); and the graphite particles have a compressive strength of 15 MPa or more.
    Type: Application
    Filed: February 19, 2019
    Publication date: February 25, 2021
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Masanobu Takeuchi, Manabu Takijiri, Yoshio Kato, Masahiro Shiraga
  • Patent number: 10895605
    Abstract: A life estimation apparatus includes a second calculation unit that calculates a remaining capacity, which is a capacity with which the lithium ion secondary cell is capable of being charged or which the lithium ion secondary cell is capable of discharging, based on Equation 1 having an exponent n1 of 0.9 to 1.1 and Equation 2 having an exponent n2 of 0.4 to 0.6. The second calculation unit calculates the remaining capacity using Equation 1 if the amount of change of open circuit voltage, the amount of change of a voltage rise width, or the amount of change of a voltage rise rate has a positive value and calculates the remaining capacity using Equation 2 if the amount of change of the open circuit voltage, the amount of change of the voltage rise width, or the amount of change of the voltage rise rate has a negative value.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: January 19, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yuta Kuroda, Masanobu Takeuchi
  • Publication number: 20200044276
    Abstract: A nonaqueous electrolyte secondary battery includes: an electrode body; a nonaqueous electrolyte liquid; a metal-made exterior package receiving the electrode body and the nonaqueous electrolyte liquid; and a pressing member provided between the electrode body and the exterior package. An outer circumference surface of the electrode body includes an exposing section to which a surface of a negative electrode collector forming the negative electrode is exposed. In addition, the pressing member expands when absorbing the nonaqueous electrolyte liquid and presses the exposing section of the electrode body to an inner surface of the exterior package.
    Type: Application
    Filed: January 17, 2018
    Publication date: February 6, 2020
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yoshinori Sakai, Tomoki Tsuji, Masanobu Takeuchi
  • Publication number: 20190386341
    Abstract: Provided is a nonaqueous electrolyte secondary battery comprising: a negative electrode having a negative electrode active substance layer; a positive electrode; and a nonaqueous electrolyte containing a nonaqueous solvent. The negative electrode active substance layer contains: a negative electrode active substance containing a carbon-based active substance; and layered silicate particles. The nonaqueous solvent contains a fluorine-based solvent.
    Type: Application
    Filed: January 17, 2018
    Publication date: December 19, 2019
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Ryo Kazawa, Yuta Kuroda, Masanobu Takeuchi
  • Publication number: 20190221824
    Abstract: This non-aqueous electrolyte secondary battery has an electrode body comprising a positive electrode and a negative electrode which are wound around while sandwiching a separator therebetween, and housed in a cylindrical housing member. The positive electrode has a positive electrode collector and a positive electrode active substance layer extending above the positive electrode collector. The negative electrode has a negative electrode collector, a negative electrode active substance layer extending above the negative electrode collector, and a negative electrode lead connected to the negative electrode collector. The negative electrode lead is disposed more toward the wound core of the electrode body than the end portion of the negative electrode active substance layer and the end portion of the positive electrode active substance layer.
    Type: Application
    Filed: March 20, 2019
    Publication date: July 18, 2019
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Tomoki Tsuji, Manabu Takijiri, Yoshinori Sakai, Masanobu Takeuchi
  • Patent number: 10340521
    Abstract: An object of the invention is to provide a nonaqueous electrolyte secondary battery having good cycle characteristics. The nonaqueous electrolyte secondary battery of the present invention includes a positive electrode containing a positive electrode active material, a negative electrode containing a negative electrode active material, a separator interposed between the positive electrode and the negative electrode, and a nonaqueous electrolyte. The positive electrode active material is a layered lithium transition metal oxide, and the positive electrode active material has a crystallite size of 140 nm or less. The negative electrode active material contains at least carbon, and the nonaqueous electrolyte contains 2 to 30% by volume of fluoroethylene carbonate.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: July 2, 2019
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Atsushi Ogata, Yoshiyuki Muraoka, Katsunori Yanagida, Masanobu Takeuchi, Fumiharu Niina
  • Publication number: 20190027752
    Abstract: This non-aqueous electrolyte secondary battery is equipped with a positive electrode comprising: a positive electrode active substance containing a lithium-containing transition metal oxide; and a lithium compound derived from an irreversible substance irreversibly reacting with lithium at a voltage lower than the average operating voltage of the positive electrode active substance.
    Type: Application
    Filed: September 25, 2018
    Publication date: January 24, 2019
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Ryo Kazama, Masanobu Takeuchi, Tomoki Tsuji, Manabu Takijiri
  • Publication number: 20190025381
    Abstract: A life estimation apparatus includes a second calculation unit that calculates a remaining capacity, which is a capacity with which the lithium ion secondary cell is capable of being charged or which the lithium ion secondary cell is capable of discharging, based on Equation 1 having an exponent n1 of 0.9 to 1.1 and Equation 2 having an exponent n2 of 0.4 to 0.6. The second calculation unit calculates the remaining capacity using Equation 1 if the amount of change of open circuit voltage, the amount of change of a voltage rise width, or the amount of change of a voltage rise rate has a positive value and calculates the remaining capacity using Equation 2 if the amount of change of the open circuit voltage, the amount of change of the voltage rise width, or the amount of change of the voltage rise rate has a negative value.
    Type: Application
    Filed: September 25, 2018
    Publication date: January 24, 2019
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yuta Kuroda, Masanobu Takeuchi
  • Publication number: 20190027776
    Abstract: A battery module includes multiple cells that are connected in parallel to each other and a positive-side lead plate electrically connected to a positive electrode of each cell. The battery module further includes a potential difference detection unit that detects three potential differences between two points of three points on the positive-side lead plate and a microcomputer that determines an abnormality of one cell based on a signal indicating the three potential differences between two points from the potential difference detection unit.
    Type: Application
    Filed: September 25, 2018
    Publication date: January 24, 2019
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yuta Kuroda, Masanobu Takeuchi
  • Patent number: 9847529
    Abstract: A nonaqueous electrolyte secondary battery comprising a negative electrode plate including a negative electrode collector and a negative electrode mix layer which is placed on the negative electrode collector and which contains a negative electrode active material, a binder A containing a rubber polymer compound as a binder, and a binder B containing a water-soluble polymer compound. The negative electrode mix layer has a cross section in a thickness direction thereof, the cross section being halved into a collector-side region and a surface-side region. The sum of the perimeters of the negative electrode active material per unit area in the cross section is more distributed in the collector-side region than in the surface-side region. The binder A is more distributed in the collector-side region than in the surface-side region.
    Type: Grant
    Filed: March 20, 2014
    Date of Patent: December 19, 2017
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Masanori Sugimori, Masanobu Takeuchi, Katsunori Yanagida
  • Patent number: 9786908
    Abstract: An object is to provide a positive electrode for a non-aqueous electrolyte secondary battery and a non-aqueous electrolyte secondary battery that allow a high output characteristic. Included are a positive electrode collector and a positive electrode mixture layer formed on at least one surface of the positive electrode collector. The positive electrode mixture layer contains particles 3 of lithium nickel cobalt manganese oxide represented by LiNi0.55Co0.2OMn0.25O2, erbium oxyhydroxide 1 fixed on the surfaces of the particles of the lithium nickel cobalt manganese oxide 3, tungsten trioxide 2 adhering to the surfaces of the particles of the lithium nickel cobalt manganese oxide 3, and a binder.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: October 10, 2017
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Masanobu Takeuchi, Manabu Takijiri, Katsunori Yanagida, Junichi Sugaya, Takeshi Ogasawara
  • Patent number: 9640800
    Abstract: Provided is a nonaqueous electrolyte secondary battery with improved high-rate discharge characteristics. The nonaqueous electrolyte secondary battery includes a positive electrode including a metal foil and a positive electrode active material layer formed thereon; a negative electrode containing a negative electrode active material; and a nonaqueous electrolyte containing a nonaqueous solvent and a solute dissolved therein. The metal foil of the positive electrode is an aluminum foil having an at least partially roughened surface adjacent to the positive electrode active material layer. The positive electrode includes a conductive layer containing a conductor and a binder in recesses in the at least partially roughened surface of the aluminum foil. The positive electrode active material layer is disposed on the conductive layer and contains a positive electrode active material, the conductor, and the binder.
    Type: Grant
    Filed: March 13, 2012
    Date of Patent: May 2, 2017
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Manabu Takijiri, Masanobu Takeuchi, Yoshinori Kida
  • Publication number: 20170062818
    Abstract: An object of the invention is to provide a nonaqueous electrolyte secondary battery having good cycle characteristics. The nonaqueous electrolyte secondary battery of the present invention includes a positive electrode containing a positive electrode active material, a negative electrode containing a negative electrode active material, a separator interposed between the positive electrode and the negative electrode, and a nonaqueous electrolyte. The positive electrode active material is a layered lithium transition metal oxide, and the positive electrode active material has a crystallite size of 140 nm or less. The negative electrode active material contains at least carbon, and the nonaqueous electrolyte contains 2 to 30% by volume of fluoroethylene carbonate.
    Type: Application
    Filed: February 13, 2015
    Publication date: March 2, 2017
    Applicant: SANYO Electric Co., Ltd.
    Inventors: Atsushi Ogata, Yoshiyuki Muraoka, Katsunori Yanagida, Masanobu Takeuchi, Fumiharu Niina
  • Publication number: 20160056471
    Abstract: A nonaqueous electrolyte secondary battery comprising a negative electrode plate including a negative electrode collector and a negative electrode mix layer which is placed on the negative electrode collector and which contains a negative electrode active material, a binder A containing a rubber polymer compound as a binder, and a binder B containing a water-soluble polymer compound. The negative electrode mix layer has a cross section in a thickness direction thereof, the cross section being halved into a collector-side region and a surface-side region. The sum of the perimeters of the negative electrode active material per unit area in the cross section is more distributed in the collector-side region than in the surface-side region. The binder A is more distributed in the collector-side region than in the surface-side region.
    Type: Application
    Filed: March 20, 2014
    Publication date: February 25, 2016
    Applicant: SANYO Electric Co., Ltd.
    Inventors: Masanori Sugimori, Masanobu Takeuchi, Katsunori Yanagida
  • Publication number: 20150221942
    Abstract: A positive electrode active material for a nonaqueous electrolyte secondary battery includes a lithium transition metal oxide containing nickel and zirconium and including secondary particles, each of which is composed of an aggregate of primary particles, and a rare earth compound deposited on and/or near interfaces between the primary particles.
    Type: Application
    Filed: August 28, 2013
    Publication date: August 6, 2015
    Applicant: SANYO Electric Co., Ltd.
    Inventors: Junichi Sugaya, Manabu Takijiri, Masanobu Takeuchi, Katsunori Yanagida, Takeshi Ogasawara
  • Publication number: 20150221938
    Abstract: In a nonaqueous electrolyte secondary battery including a positive electrode containing a positive electrode active material, a negative electrode, and a nonaqueous electrolyte, the positive electrode active material contains a lithium transition metal oxide having a surface to which a rare earth compound is adhered, and the nonaqueous electrolyte contains a lithium salt in which an oxalate complex functions as an anion.
    Type: Application
    Filed: September 5, 2013
    Publication date: August 6, 2015
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Takashi Yamamoto, Masanori Sugimori, Manabu Takijiri, Junichi Sugaya, Masanobu Takeuchi, Katsunori Yanagida, Takeshi Ogasawara
  • Publication number: 20150207142
    Abstract: A nonaqueous electrolyte secondary battery according to an embodiment of the present invention includes a positive electrode (1) containing a positive electrode active material that contains a lithium transition metal oxide having a surface to which a compound of a rare-earth element is adhered, a negative electrode (2) containing a negative electrode active material, and a nonaqueous electrolyte to which a lithium salt having a P—O bond and a P—F bond in its molecule and/or a lithium salt having a B—O bond and a B—F bond in its molecule is added.
    Type: Application
    Filed: August 20, 2013
    Publication date: July 23, 2015
    Applicant: SANYO Electric Co., Ltd.
    Inventors: Manabu Takijiri, Junichi Sugaya, Masanobu Takeuchi, Katsunori Yanagida, Takeshi Ogasawara
  • Publication number: 20150056512
    Abstract: An object is to provide a positive electrode for a non-aqueous electrolyte secondary battery and a non-aqueous electrolyte secondary battery that allow a high output characteristic. Included are a positive electrode collector and a positive electrode mixture layer formed on at least one surface of the positive electrode collector. The positive electrode mixture layer contains particles 3 of lithium nickel cobalt manganese oxide represented by LiNi0.55Co0.20Mn0.25O2, erbium oxyhydroxide 1 fixed on the surfaces of the particles of the lithium nickel cobalt manganese oxide 3, tungsten trioxide 2 adhering to the surfaces of the particles of the lithium nickel cobalt manganese oxide 3, and a binder.
    Type: Application
    Filed: January 31, 2013
    Publication date: February 26, 2015
    Applicant: SANYO Electric Co., Ltd.
    Inventors: Masanobu Takeuchi, Manabu Takijiri, Katsunori Yanagida, Junichi Sugaya, Takeshi Ogasawara
  • Publication number: 20140212757
    Abstract: Provided is a nonaqueous electrolyte secondary battery having excellent output characteristics. A nonaqueous electrolyte secondary battery 1 includes a positive electrode 12, a negative electrode 11, a nonaqueous electrolyte, and a separator 13. The positive electrode 12 includes a positive electrode current collector, a positive electrode active material layer, and a carbon layer. The carbon layer is provided between the positive electrode current collector and the positive electrode active material layer. The positive electrode active material layer contains a lithium composite oxide. The lithium composite oxide has a molar ratio of nickel to manganese (nickel/manganese) of 6/4 or more.
    Type: Application
    Filed: August 22, 2012
    Publication date: July 31, 2014
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Manabu Takijiri, Masanobu Takeuchi, Yoshinori Kida