Patents by Inventor Gentaro Kano

Gentaro Kano 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: 20200388875
    Abstract: The bipolar secondary battery includes a power generation element including unit power generation elements stacked together and including bipolar electrodes stacked via separators, and current collecting plates arranged at both ends of the power generation element in the stacked direction of the unit power generation elements so as to be in contact with the power generation element, wherein the current collecting plates each include an electrically conductive layer and a resin film, the electrically conductive layer being formed on the resin film having a thermal shrinkage percentage of 2% or greater at a temperature of 150° C., and the separators have a higher thermal shrinkage start temperature than the resin films.
    Type: Application
    Filed: April 26, 2018
    Publication date: December 10, 2020
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Gentaro KANO, Kazuki ARIHARA, Atsushi HORAI, Eiji MINEGISHI, Takashi MORI, Yusuke EMORI, Yusuke NAKASHIMA
  • Publication number: 20200185706
    Abstract: A positive electrode for non-aqueous electrolyte secondary battery that results in improved output characteristics at a high rate has a positive electrode active material layer having a thickness of 150 to 1500 ?m formed on a surface of a current collector. In addition, the positive electrode active material layer includes coated positive electrode active material particles in which at least a part of a surface of a positive electrode active material is coated with a coating agent containing a coating resin and a conductive aid. Furthermore, a porosity of the positive electrode active material layer is 35.0% to 50.0% and a density of the positive electrode active material layer is 2.10 to 3.00 g/cm3.
    Type: Application
    Filed: August 15, 2017
    Publication date: June 11, 2020
    Inventors: Hiroyuki Tanaka, Gentaro Kano, Hideaki Horie, Yuki Kusachi, Yusuke Nakashima, Kazuya Minami
  • Patent number: 10656215
    Abstract: A short circuit detection device has a voltage sensor and a control unit. The voltage sensor detects a voltage of a secondary battery. The control unit determines whether a first voltage value of the voltage of the secondary battery discharging to a load is below a threshold value. Upon determining the first voltage value is below the threshold value, the control unit adjusts the load to reduce the current that flows from the secondary battery to the load. The control unit then determines whether a second voltage value of the voltage of the secondary battery after the adjustment of the load is less than the first voltage value. Upon determining the second voltage value is less than the first voltage value, control unit recognizes that an internal short circuit of the secondary battery has occurred.
    Type: Grant
    Filed: November 7, 2016
    Date of Patent: May 19, 2020
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Atsushi Horai, Gentaro Kano, Hiroyuki Tanaka
  • Publication number: 20200064409
    Abstract: A short circuit detection device has a voltage sensor and a control unit. The voltage sensor detects a voltage of a secondary battery. The control unit determines whether a first voltage value of the voltage of the secondary battery discharging to a load is below a threshold value. Upon determining the first voltage value is below the threshold value, the control unit adjusts the load to reduce the current that flows from the secondary battery to the load. The control unit then determines whether a second voltage value of the voltage of the secondary battery after the adjustment of the load is less than the first voltage value. Upon determining the second voltage value is less than the first voltage value, control unit recognizes that an internal short circuit of the secondary battery has occurred.
    Type: Application
    Filed: November 7, 2016
    Publication date: February 27, 2020
    Inventors: Atsushi HORAI, Gentaro KANO, Hiroyuki TANAKA
  • Publication number: 20200028166
    Abstract: A negative electrode for non-aqueous electrolyte secondary battery provides a means for improving output characteristics at a high rate. The negative electrode has a negative electrode active material layer having a thickness of 150 to 1500 ?m formed on a surface of a current collector. In addition, the negative electrode active material layer includes coated negative electrode active material particles in which at least a part of a surface of a negative electrode active material is coated with a coating agent containing a coating resin and a conductive aid. Furthermore, a porosity of the negative electrode active material layer is 39.0% to 60.0% and a density of the negative electrode active material layer is 0.60 to 1.20 g/cm3.
    Type: Application
    Filed: August 15, 2017
    Publication date: January 23, 2020
    Inventors: Hiroyuki Tanaka, Gentaro Kano, Hideaki Horie, Yuki Kusachi, Yusuke Nakashima, Kazuya Minami
  • Publication number: 20200028145
    Abstract: A secondary battery is provided with a power generation element, an electroconductive member, an external short circuit, a current detector and an external discharge safety circuit. The power generation element has a unit cell layer that includes a positive electrode, a separator and a negative electrode stacked in that order. The electroconductive member is disposed on one outward side of the power generation element with an insulation member interposed therebetween. A lead wire connects the electroconductive member with the negative electrode tab. The current detector detects whether or not current is flowing to the lead wire. The external discharge safety circuit is provided to short-circuits a path between the positive electrode tab and the negative electrode tab outside the power generation element while current detector detects a current.
    Type: Application
    Filed: March 3, 2017
    Publication date: January 23, 2020
    Inventors: Gentaro KANO, Atsushi HORAI, Kazuki ARIHARA, Hajime SATOU, Yasuhiko OHSAWA, Ryoichi SENBOKUYA, Maki CHUMON, Eiji MINEGISHI
  • Patent number: 10431830
    Abstract: A current collector for a battery includes: a layer (1) formed from an electrically conductive material and at least one of (a) a polymer compound having an alicyclic structure, (b) a saturated hydrocarbon polymer compound having a hydroxyl group, (c) a phenoxy resin and an epoxy resin, and (d) an amine having an amine equivalent of 120 g/eq or less and an epoxy resin; a layer (2) which is formed on at least one surface of the layer (1); and a layer (3) formed from an electrically conductive material. The current collector for a battery has stability to an equilibrium potential environment in a negative electrode, a low electric resistance, a blocking property to solvent in electrolytic solution, and a blocking property to a component in an electrolyte. In addition, the current collector for a battery has a high capacity retention rate, and battery durability is improved.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: October 1, 2019
    Assignees: KANEKA CORPORATION, NISSAN MOTOR CO., LTD.
    Inventors: Satoshi Oku, Yusuke Kato, Akiko Waki, Takashi Kikuchi, Takashi Ito, Masahiro Kojima, Gentaro Kano, Shiho Inoue, Yasuyuki Tanaka, Norihisa Waki, Yuji Muroya, Kazuki Miyatake, Yoshio Shimoida, Keisuke Wakabayashi, Tomohisa Matsuno, Seiji Ishimoto
  • Patent number: 10374225
    Abstract: A non-aqueous electrolyte secondary battery includes: a negative electrode active material represented by the Formula (1)=? (Si material)+? (carbon material), wherein the Si material is one or more kinds selected from the group consisting of SiOx that is a mixture of amorphous SiO2 particles and Si particles and a Si-containing alloy; ? and ? represent % by mass of each component in the layer; and 80??+??98, 0.1???40, and 58???97.9 are satisfied, and a difference between the maximum value and the minimum value of an area proportion (%) of a binder in an area of the field of view of each image of cross-sections of the layer in a case where a plurality of arbitrary places is selected in a plane of the negative electrode active material layer is within 10%.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: August 6, 2019
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Kensuke Yamamoto, Wataru Ogihara, Gentaro Kano, Hideaki Tanaka, Youichirou Kondou, Masaaki Suzuki, Tsuyoshi Tanabe, Takashi Nakano
  • Publication number: 20190157664
    Abstract: A non-aqueous electrolyte secondary battery includes a negative electrode active material represented by: ?(Si material)+?(carbon material), the Si material is one or more kinds selected from the group consisting of SiOx that is a mixture of amorphous SiO2 particles and Si particles and a Si-containing alloy; ? and ? represent % by mass; and 80??+??98, 0.1???40, and 58???97.9 are satisfied), and when area proportions (%) of the Si material and the carbon material in an area of a field of view of each image of cross-sections of the layer in a case where a plurality of arbitrary places is selected in a plane of the layer are designated as S (%) and (100?S) (%), respectively, a difference between a maximum value and a minimum value of S is within 5%.
    Type: Application
    Filed: April 28, 2016
    Publication date: May 23, 2019
    Inventors: Kensuke Yamamoto, Wataru Ogihara, Gentaro Kano, Hideaki Tanaka, Youichirou Kondou, Masaaki Suzuki, Tsuyoshi Tanabe, Takashi Nakano
  • Publication number: 20190140261
    Abstract: A non-aqueous electrolyte secondary battery includes: a negative electrode active material represented by the Formula (1)=? (Si material)+? (carbon material), wherein the Si material is one or more kinds selected from the group consisting of SiOx that is a mixture of amorphous SiO2 particles and Si particles and a Si-containing alloy; ? and ? represent % by mass of each component in the layer; and 80??+??98, 0.1???40, and 58???97.9 are satisfied, and a difference between the maximum value and the minimum value of an area proportion (%) of a binder in an area of the field of view of each image of cross-sections of the layer in a case where a plurality of arbitrary places is selected in a plane of the negative electrode active material layer is within 10%.
    Type: Application
    Filed: April 28, 2016
    Publication date: May 9, 2019
    Applicant: Nissan Motor Co., Ltd.
    Inventors: Kensuke Yamamoto, Wataru Ogihara, Gentaro Kano, Hideaki Tanaka, Youichirou Kondou, Masaaki Suzuki, Tsuyoshi Tanabe, Takashi Nakano
  • Patent number: 10033033
    Abstract: A non-aqueous electrolyte secondary battery has the internal resistance of 10 m?/Ah or less (SOC of 50%) and has a power generating element containing the following: a positive electrode obtained by forming, on the surface of a positive electrode current collector, a positive electrode active substance layer containing a positive electrode active substance; a negative electrode obtained by forming, on the surface of a negative electrode current collector, a negative electrode active substance layer containing a negative electrode active substance; and a separator. The positive electrode active substance is made to contain a spinel type lithium manganese composite oxide and a lithium nickel-based composite oxide, and the mixing ratio of the lithium nickel-based composite oxide is 50 to 70% by weight relative to the total 100% by weight of the spinel type lithium manganese composite oxide and the lithium nickel-based composite oxide.
    Type: Grant
    Filed: April 23, 2014
    Date of Patent: July 24, 2018
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Kenji Ohara, Yoshiaki Nitta, Gentaro Kano, Tomoya Kubota, Masanori Aoyagi
  • Patent number: 9716266
    Abstract: [Object] Provided is a means for improving cycle characteristics by suppressing electrode deterioration resulting from non-uniformity of voltage across an electrode plane in a high-capacity and large-area non-aqueous electrolyte secondary battery that includes lithium nickel-based composite oxide as a positive electrode active substance.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: July 25, 2017
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Kenji Ohara, Yoshiaki Nitta, Satoru Ichikawa, Gentaro Kano, Manabu Nishijima, Osamu Shimamura, Fumihiro Kawamura, Kousuke Hagiyama, Shigeo Ibuka, Manabu Kaseda, Masanori Suenaga, Tamaki Hirai, Masahiro Takaya, Kuniharu Nomoto
  • Patent number: 9608261
    Abstract: [Object] Provided is a means for improving cycle characteristics by suppressing electrode deterioration resulting from non-uniformity of voltage across an electrode plane in a high-capacity and large-area non-aqueous electrolyte secondary battery that includes lithium nickel-based composite oxide as a positive electrode active substance.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: March 28, 2017
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Kenji Ohara, Yoshiaki Nitta, Satoru Ichikawa, Gentaro Kano, Manabu Nishijima, Osamu Shimamura, Fumihiro Kawamura, Kousuke Hagiyama, Shigeo Ibuka, Manabu Kaseda, Masanori Suenaga, Tamaki Hirai, Masahiro Takaya, Kuniharu Nomoto
  • Publication number: 20160190549
    Abstract: A non-aqueous electrolyte secondary battery has the internal resistance of 10 ?/Ah or less (SOC of 50%) and has a power generating element containing the following: a positive electrode obtained by forming, on the surface of a positive electrode current collector, a positive electrode active substance layer containing a positive electrode active substance; a negative electrode obtained by forming, on the surface of a negative electrode current collector, a negative electrode active substance layer containing a negative electrode active substance; and a separator. The positive electrode active substance is made to contain a spinel type lithium manganese composite oxide and a lithium nickel-based composite oxide, and the mixing ratio of the lithium nickel-based composite oxide is 50 to 70% by weight relative to the total 100% by weight of the spinel type lithium manganese composite oxide and the lithium nickel-based composite oxide.
    Type: Application
    Filed: April 23, 2014
    Publication date: June 30, 2016
    Inventors: Kenji OHARA, Yoshiaki NITTA, Gentaro KANO, Tomoya KUBOTA, Masanori AOYAGI
  • Publication number: 20160036044
    Abstract: [Object] Provided is a means for improving cycle characteristics by suppressing electrode deterioration resulting from non-uniformity of voltage across an electrode plane in a high-capacity and large-area non-aqueous electrolyte secondary battery that includes lithium nickel-based composite oxide as a positive electrode active substance.
    Type: Application
    Filed: March 13, 2014
    Publication date: February 4, 2016
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Kenji OHARA, Yoshiaki NITTA, Satoru ICHIKAWA, Gentaro KANO, Manabu NISHIJIMA, Osamu SHIMAMURA, Fumihiro KAMAMURA, Kousuke HAGIYAMA, Shigeo IBUKA, Manabu KASEDA, Masanori SUENAGA, Tamaki HIRAI, Masahiro TAKAYA, Kuniharu NOMOTO
  • Publication number: 20160028073
    Abstract: [Object] Provided is a means for improving cycle characteristics by suppressing electrode deterioration resulting from non-uniformity of voltage across an electrode plane in a high-capacity and large-area non-aqueous electrolyte secondary battery that includes lithium nickel-based composite oxide as a positive electrode active substance.
    Type: Application
    Filed: March 13, 2014
    Publication date: January 28, 2016
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Kenji OHARA, Yoshiaki NITTA, Satoru ICHIKAWA, Gentaro KANO, Manabu NISHIJIMA, Osamu SHIMAMURA, Fumihiro KAWAMURA, Kousuke HAGIYAMA, Shigeo IBUKA, Manabu KASEDA, Masanori SUENAGA, Tamaki HIRAI, Masahiro TAKAYA, Kuniharu NOMOTO
  • Publication number: 20150318555
    Abstract: A current collector for a battery includes: a layer (1) formed from an electrically conductive material and at least one of (a) a polymer compound having an alicyclic structure, (b) a saturated hydrocarbon polymer compound having a hydroxyl group, (c) a phenoxy resin and an epoxy resin, and (d) an amine having an amine equivalent of 120 g/eq or less and an epoxy resin; a layer (2) which is formed on at least one surface of the layer (1); and a layer (3) formed from an electrically conductive material. The current collector for a battery has stability to an equilibrium potential environment in a negative electrode, a low electric resistance, a blocking property to solvent in electrolytic solution, and a blocking property to a component in an electrolyte. In addition, the current collector for a battery has a high capacity retention rate, and battery durability is improved.
    Type: Application
    Filed: August 29, 2013
    Publication date: November 5, 2015
    Applicants: KANEKA CORPORATION, NISSAN MOTOR CO., LTD.
    Inventors: Satoshi Oku, Yusuke Kato, Akiko Waki, Takashi Kikuchi, Takashi Ito, Masahiro Kojima, Gentaro Kano, Shiho Inoue, Yasuyuki Tanaka, Norihisa Waki, Yuji Muroya, Kazuki Miyatake, Yoshio Shimoida, Keisuke Wakabayashi, Tomohisa Matsuno, Seiji Ishimoto
  • Patent number: 8916291
    Abstract: An electrolytic solution capable of suppressing the battery swollenness and improving the battery characteristics such as the charge and discharge efficiency and a battery using it are provided. A cathode (21) and an anode (22) are layered with an electrolyte layer (24) in between. The electrolyte layer (24) is gelatinous, containing the electrolytic solution and a polymer compound. The electrolytic solution contains a compound having proton scavenging capacity such as hexamethylenetetramine and hexaethylenetetramine. Thereby, a free acid such as hydrofluoric acid is scavenged, and decomposition reaction of the electrolytic solution or the like is prevented.
    Type: Grant
    Filed: February 14, 2006
    Date of Patent: December 23, 2014
    Assignee: Sony Corporation
    Inventors: Akira Ichihashi, Gentaro Kano, Karin Tsuda, Fumiko Kimura
  • Publication number: 20140134500
    Abstract: An anode and a battery, which have a high capacity and can improve battery characteristics such as large current discharge characteristics and low temperature discharge characteristics are provided. An anode has an anode current collector and an anode active material layer provided on the anode current collector. The density of the anode active material layer is in the range from 1.5 g/cm3 to 1.8 g/cm3. Further, the anode active material layer contains a granulated graphite material which is obtained by granulating a flat graphite particle in nodular shape and mesocarbon microbeads. Thereby, the granulated graphite material is prevented from being destroyed, and diffusion path of lithium ions is secured.
    Type: Application
    Filed: January 17, 2014
    Publication date: May 15, 2014
    Applicant: SONY CORPORATION
    Inventor: Gentaro KANO
  • Patent number: 8673501
    Abstract: An anode and a battery, which have a high capacity and can improve battery characteristics such as large current discharge characteristics and low temperature discharge characteristics are provided. An anode has an anode current collector and an anode active material layer provided on the anode current collector. The density of the anode active material layer is in the range from 1.5 g/cm3 to 1.8 g/cm3. Further, the anode active material layer contains a granulated graphite material which is obtained by granulating a flat graphite particle in nodular shape and mesocarbon microbeads. Thereby, the granulated graphite material is prevented from being destroyed, and diffusion path of lithium ions is secured.
    Type: Grant
    Filed: January 25, 2006
    Date of Patent: March 18, 2014
    Assignee: Sony Corporation
    Inventor: Gentaro Kano