Patents by Inventor Masanori SUGIMORI

Masanori SUGIMORI 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: 20200251744
    Abstract: A non-aqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode. The separator has a multilayer structure in which a first filler layer containing phosphate particles, a porous resin substrate, and a second filler layer containing inorganic particles having higher heat resistance than the phosphate particles are stacked in this order from the negative electrode side. The first filler layer is disposed on the porous resin substrate in such a manner that the surface of the first filler layer faces the surface of the negative electrode. The phosphate particles have a BET specific surface area in the range of 5 m2/g or more and 100 m2/g or less.
    Type: Application
    Filed: November 2, 2018
    Publication date: August 6, 2020
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Akihiko Takada, Masanori Sugimori, Nobuhiro Hirano, Yuki Morikawa, Yasunori Baba, Katsunori Yanagida
  • Publication number: 20200243827
    Abstract: In a nonaqueous electrolyte secondary battery, a separator includes a substrate, a first filler layer disposed on one side of the substrate and containing phosphate salt particles, and a second filler layer disposed on the other side of the substrate and containing inorganic particles. The separator is disposed between a positive electrode and a negative electrode in such a manner that the side of the substrate which bears the first filler layer is directed to the positive electrode side.
    Type: Application
    Filed: November 2, 2018
    Publication date: July 30, 2020
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yuki Morikawa, Masanori Sugimori, Yasunori Baba, Katsunori Yanagida, Nobuhiro Hirano
  • Publication number: 20200203693
    Abstract: A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode and a separator disposed between the positive electrode and the negative electrode, wherein the separator includes an inorganic filler layer which includes a first filler layer containing phosphate salt particles and a second filler layer disposed on the first filler layer and containing inorganic particles more heat resistant than the phosphate salt particles, and the BET specific surface area of the phosphate salt particles is in the range of not less than 5 m2/g and not more than 100 m2/g.
    Type: Application
    Filed: July 27, 2018
    Publication date: June 25, 2020
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Masanori Sugimori, Yasunori Baba, Katsunori Yanagida, Nobuhiro Hirano
  • Publication number: 20200203695
    Abstract: In a nonaqueous electrolyte secondary battery, a separator includes a substrate, a first filler layer containing phosphate salt particles, and a second filler layer interposed between the substrate and the first filler layer and containing inorganic particles. The separator is disposed between a positive electrode and a negative electrode in such a manner that the first filler layer and the second filler layer are directed to the positive electrode side. Further, a resin layer is disposed between the positive electrode and the first filler layer.
    Type: Application
    Filed: August 30, 2018
    Publication date: June 25, 2020
    Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yasunori Baba, Masanori Sugimori, Katsunori Yanagida, Nobuhiro Hirano
  • Patent number: 10553856
    Abstract: The present invention provides a nonaqueous electrolyte secondary battery capable of suppressing the increase in IV resistance of a battery in a combination of a negative electrode containing a lithium-titanium composite oxide and a carbon material and a positive electrode containing a lithium transition metal oxide. A nonaqueous electrolyte secondary battery according to the present invention includes a positive electrode, a negative electrode, a separator placed between the positive electrode and the negative electrode, and a nonaqueous electrolyte. The positive electrode contains a lithium transition metal oxide in which Ni accounts for 30 mole percent or more of the total molar amount of metal elements excluding Li and also contains tungsten element. The negative electrode contains a lithium-titanium composite oxide and a carbon material. The nonaqueous electrolyte contains a substance reduced on the negative electrode at a potential of 0.5 V to 1.5 V (vs. Li/Li+).
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: February 4, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Natsumi Goto, Masanori Sugimori, Kouhei Tuduki, Katsunori Yanagida
  • Publication number: 20190214635
    Abstract: A negative electrode for nonaqueous electrolyte secondary batteries includes a negative electrode current collector and a negative electrode mixture layer disposed on the negative electrode current collector, and the negative electrode mixture layer contains a negative electrode active material containing lithium titanate, a binder, and a (meth)acrylic acid-based polymer. The amount of the (meth)acrylic acid-based polymer in the negative electrode mixture layer is 10 mass % or less relative to the total amount of the (meth)acrylic acid-based polymer and the binder. The amount of the (meth)acrylic acid-based polymer in a portion of the negative electrode mixture layer that extends from the surface to the middle of the negative electrode mixture layer in the thickness direction (upper region) is 60 mass % or more relative to the total amount of the (meth)acrylic acid-based polymer.
    Type: Application
    Filed: August 22, 2017
    Publication date: July 11, 2019
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Masanori Sugimori, Yasunori Baba, Katsunori Yanagida
  • Publication number: 20190173085
    Abstract: A nonaqueous electrolyte secondary battery according to the present invention includes a positive electrode, a negative electrode, a separator placed between the positive electrode and the negative electrode, and a nonaqueous electrolyte. The positive electrode contains a first lithium transition metal oxide in which Ni accounts for 30 mole percent or more of the total molar amount of metal elements excluding Li; a second lithium transition metal oxide in which Co and Ni account for 60 mole percent or more and 20 mole percent or less, respectively, of the total molar amount of metal elements excluding Li; and tungsten element. The negative electrode contains a lithium-titanium composite oxide.
    Type: Application
    Filed: November 21, 2016
    Publication date: June 6, 2019
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Masanori Sugimori, Natsumi Goto, Kouhei Tuduki, Katsunori Yanagida
  • Patent number: 10270086
    Abstract: A negative electrode for nonaqueous electrolyte secondary batteries which suppresses generation of gas and increases power characteristics, including a negative electrode current collector and a negative electrode mixture layer placed on the negative electrode current collector. The negative electrode mixture layer is a mixture of a negative electrode active material, a binding agent, and a conductive agent. The negative electrode active material contains silicon. The binding agent includes a binding agent A made of a rubber polymeric compound. A through-thickness cross section of the negative electrode mixture layer halved into a current collector-side region and a surface-side region, has the amount of the binding agent A in the current collector-side region larger than the amount of the binding agent A in the surface-side region and the amount of the conductive agent in the surface-side region is larger than the amount of the conductive agent in the current collector-side region.
    Type: Grant
    Filed: January 20, 2015
    Date of Patent: April 23, 2019
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Masanori Sugimori, Katsunori Yanagida
  • Patent number: 10243205
    Abstract: A negative electrode for nonaqueous electrolyte secondary batteries including a negative electrode current collector and a negative electrode mixture layer placed on the negative electrode current collector. The negative electrode mixture layer is a layer of a mixture of a negative electrode active material, a binding agent, and a conductive agent. The binding agent includes a binding agent A made of a rubber polymeric compound and a binding agent B made of a water-soluble polymeric compound. In the case where a through-thickness cross section of the negative electrode mixture layer is halved into a current collector-side region and a surface-side region, the amount of the binding agent A in the current collector-side region is larger than the amount of the binding agent A in the surface-side region and the amount of the conductive agent in the current collector-side region is larger than the amount of the conductive agent in the surface-side region.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: March 26, 2019
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Masanori Sugimori, Katsunori Yanagida
  • Publication number: 20190044179
    Abstract: In a nonaqueous electrolyte secondary battery, a positive electrode mixture layer of a positive electrode contains a lithium transition metal oxide containing at least nickel (Ni), cobalt (Co), manganese (Mn), and tungsten (W). A negative electrode mixture layer of a negative electrode contains lithium titanate and a group-5 group-6oxide that is an oxide containing at least one selected from a group consisting of group 5 elements and group 6 elements.
    Type: Application
    Filed: January 26, 2017
    Publication date: February 7, 2019
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Masanori Sugimori, Kouhei Tuduki, Katsunori Yanagida
  • Publication number: 20180309116
    Abstract: The present invention provides a nonaqueous electrolyte secondary battery capable of suppressing the increase in IV resistance of a battery in a combination of a negative electrode containing a lithium-titanium composite oxide and a carbon material and a positive electrode containing a lithium transition metal oxide. A nonaqueous electrolyte secondary battery according to the present invention includes a positive electrode, a negative electrode, a separator placed between the positive electrode and the negative electrode, and a nonaqueous electrolyte. The positive electrode contains a lithium transition metal oxide in which Ni accounts for 30 mole percent or more of the total molar amount of metal elements excluding Li and also contains tungsten element. The negative electrode contains a lithium-titanium composite oxide and a carbon material. The nonaqueous electrolyte contains a substance reduced on the negative electrode at a potential of 0.5 V to 1.5 V (vs. Li/Li+).
    Type: Application
    Filed: November 21, 2016
    Publication date: October 25, 2018
    Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LT D.
    Inventors: Natsumi Goto, Masanori Sugimori, Kouhei Tuduki, Katsunori Yanagida
  • Publication number: 20180048014
    Abstract: The present invention aims to provide a non-aqueous electrolyte secondary battery in which the amount of a gas generated during charge/discharge cycles, during storage, or the like is small although a cellulose-made separator is used. A non-aqueous electrolyte secondary battery which is one example of an embodiment includes a positive electrode including a positive electrode collector and a positive electrode mixture layer formed thereon; a negative electrode including a negative electrode collector and a negative electrode mixture layer formed thereon; a separator formed from a cellulose as a primary component; and a fluorine-containing non-aqueous electrolyte. In the positive electrode mixture layer, a lithium transition metal oxide and a phosphoric acid compound are contained.
    Type: Application
    Filed: April 13, 2016
    Publication date: February 15, 2018
    Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO. LTD.
    Inventors: Masanori Sugimori, Katsunori Yanagida, Natsumi Goto
  • Publication number: 20180034112
    Abstract: The present invention aims to suppress gas generation during charge/discharge cycles, storage, and the like when a group IV to VI oxide, such as a lithium titanate, is used as a negative electrode active material. A non-aqueous electrolyte secondary battery includes a positive electrode having a positive electrode collector and a positive electrode mixture layer formed thereon, a negative electrode having a negative electrode collector and a negative electrode mixture layer formed thereon, and a fluorine-containing non-aqueous electrolyte. In the positive electrode mixture layer, a lithium transition metal oxide and a phosphoric acid compound are contained. In the negative electrode mixture layer, a group IV to VI oxide is contained which contains at least one type of element selected from a group IV element, a group V element, and a group VI element of the periodic table and which has a BET specific surface area of 2.0 m2/g or more.
    Type: Application
    Filed: February 18, 2016
    Publication date: February 1, 2018
    Applicant: Sanyo Electric Co., Ltd.
    Inventors: Natsumi Goto, Katsunori Yanagida, Masanori Sugimori
  • 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
  • Publication number: 20170256801
    Abstract: Provided is a nonaqueous electrolyte secondary battery in which the generation of gas is suppressed in charge/discharge cycles. The nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode, a separator placed therebetween, and a nonaqueous electrolyte. The positive electrode includes a positive electrode active material containing a lithium transition metal oxide. The positive electrode contains tungsten oxide. Tungsten is present in the form of a solid solution in the lithium transition metal oxide. Tungsten oxide is attached to the surface of the lithium transition metal oxide. The separator contains cellulose. Tungsten in tungsten oxide contained in the positive electrode is preferably 0.01 mole percent to 3.0 mole percent with respect to transition metals, excluding lithium, in the lithium transition metal oxide.
    Type: Application
    Filed: August 25, 2015
    Publication date: September 7, 2017
    Applicant: SANYO Electric Co., Ltd.
    Inventors: Masanori Sugimori, Natsumi Goto, Katsunori Yanagida
  • Publication number: 20160351892
    Abstract: A negative electrode for nonaqueous electrolyte secondary batteries which suppresses generation of gas and increases power characteristics, including a negative electrode current collector and a negative electrode mixture layer placed on the negative electrode current collector. The negative electrode mixture layer is a mixture of a negative electrode active material, a binding agent, and a conductive agent. The negative electrode active material contains silicon. The binding agent includes a binding agent A made of a rubber polymeric compound. A through-thickness cross section of the negative electrode mixture layer halved into a current collector-side region and a surface-side region, has the amount of the binding agent A in the current collector-side region larger than the amount of the binding agent A in the surface-side region and the amount of the conductive agent in the surface-side region is larger than the amount of the conductive agent in the current collector-side region.
    Type: Application
    Filed: January 20, 2015
    Publication date: December 1, 2016
    Applicant: Sanyo Electric Co., Ltd.
    Inventors: Masanori Sugimori, Katsunori Yanagida
  • Publication number: 20160329557
    Abstract: A negative electrode for nonaqueous electrolyte secondary batteries including a negative electrode current collector and a negative electrode mixture layer placed on the negative electrode current collector. The negative electrode mixture layer is a layer of a mixture of a negative electrode active material, a binding agent, and a conductive agent. The binding agent includes a binding agent A made of a rubber polymeric compound and a binding agent B made of a water-soluble polymeric compound. In the case where a through-thickness cross section of the negative electrode mixture layer is halved into a current collector-side region and a surface-side region, the amount of the binding agent A in the current collector-side region is larger than the amount of the binding agent A in the surface-side region and the amount of the conductive agent in the current collector-side region is larger than the amount of the conductive agent in the surface-side region.
    Type: Application
    Filed: December 12, 2014
    Publication date: November 10, 2016
    Applicant: SANYO Electric Co., Ltd.
    Inventors: Masanori Sugimori, Katsunori Yanagida
  • 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: 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: 20130313486
    Abstract: Provided are an electrode for a non-aqueous electrolyte secondary battery capable of improving the dispersibility of a conducting agent in the electrode and forming a good conductive network, a method for producing the same, and a non-aqueous electrolyte secondary battery. An electrode for a non-aqueous electrolyte secondary battery includes an active material, a binder, carbon nanotubes, and a non-fibrous conductive carbon material, characterized in that the electrode includes a polyvinylpyrrolidone-based polymer in an amount in the range of 5 to 25 parts by mass relative to 100 parts by mass of the carbon nanotubes.
    Type: Application
    Filed: November 18, 2011
    Publication date: November 28, 2013
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Masanori Sugimori, Kazunari Okita, Yoshinori Kida