Patents by Inventor Hajime Nishino

Hajime Nishino 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: 20200373582
    Abstract: A nonaqueous electrolyte secondary battery with a positive electrode having a positive electrode current collector and a positive electrode active material layer that is supported by a first main surface and a second main surface. The first main surface includes a first exposed section on which the positive electrode active material layer is not arranged. A positive electrode lead is connected to the first exposed section and includes an extension section and an overlapping section. At least a portion of the first exposed section, along with at least a portion of the overlapping section, is covered with a positive electrode insulating tape which has a base, a first layer that adheres to the first exposed section and to the overlapping section, and a second layer interposed between the base and the first layer; and the second layer expands when heated above a threshold.
    Type: Application
    Filed: July 5, 2018
    Publication date: November 26, 2020
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Hajime Nishino, Satoko Motomatsu, Kazuhiro Yoshii, Takao Sato, Tomoki Shiozaki
  • Patent number: 10658704
    Abstract: A method of manufacturing an electrode laminate, which includes an active material layer and a solid electrolyte layer formed on the active material layer, includes: an active material layer forming step of forming an active material layer; and a solid electrolyte layer forming step of forming a solid electrolyte layer on the active material layer by applying a solid electrolyte layer-forming slurry to the active material layer and drying the solid electrolyte layer-forming slurry. In this method, a surface roughness Ra value of the active material layer is 0.29 ?m to 0.98 ?m when calculated using a laser microscope.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: May 19, 2020
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kengo Haga, Junichiro Nishino, Norihiro Ose, Hajime Hasegawa, Mitsutoshi Otaki, Hiroki Kubo, Keisuke Omori
  • Publication number: 20190181495
    Abstract: A lithium ion secondary battery includes a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and a nonaqueous electrolyte having permeated the positive electrode, the negative electrode and the separator. The nonaqueous electrolyte includes a lithium salt and a nonaqueous solvent in which the lithium salt is dissolved. The lithium salt concentration in the nonaqueous electrolyte present within the positive electrode is higher than the lithium salt concentration in the nonaqueous electrolyte present within the negative electrode.
    Type: Application
    Filed: May 19, 2017
    Publication date: June 13, 2019
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yuji Tani, Hajime Nishino, Yasuhiro Sugaya, Satoshi Nishitani
  • Publication number: 20190157650
    Abstract: According to the present invention, a positive electrode of a lithium secondary battery is provided with an insulating tape that covers an electrode tab on an exposed part. This insulating tape has a multilayer structure that is composed of an organic material layer, a composite material layer which is formed from an organic material and an inorganic material, and an adhesive layer. The inorganic material in the composite material layer accounts for 20% or more of the weight of the composite material layer; and the inorganic material contains at least one substance selected from the group consisting of metal oxides, metal nitrides, metal fluorides and metal carbides. Puncture strength is ensured by means of the organic material layer, while heat resistance is ensured by means of the composite material layer.
    Type: Application
    Filed: January 22, 2019
    Publication date: May 23, 2019
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yuji Oura, Takahiro Takahashi, Tomoki Shiozaki, Hajime Nishino
  • Publication number: 20180159136
    Abstract: A secondary battery includes: a positive electrode having a positive-electrode current collector and a positive-electrode active-material layer; a negative electrode having a negative-electrode current collector and a negative-electrode active-material layer; a electrolyte; and an insulating tape covering a portion of the positive electrode. Furthermore, the positive-electrode current collector has an exposed section that the positive-electrode active-material layer is not disposed. In addition, at least a portion of the exposed section is covered with the insulating tape; the insulating tape has a substrate material layer and an adhesive layer; and the adhesive layer includes an adhesive agent and an insulating inorganic material.
    Type: Application
    Filed: February 1, 2018
    Publication date: June 7, 2018
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Tomoki Shiozaki, Yuji Oura, Hajime Nishino
  • Patent number: 9887397
    Abstract: A battery case includes a case main body (20), a sealing body that seals an opening of the main body, and an insulating body (40) that is disposed at a part where the case body (20) and the sealing body are in contact with each other. In the battery case, an open end (22) of the case body (20) is crimped to the sealing body, and a dent (36) is formed in the sealing body by pressing the open end (22) against the sealing body.
    Type: Grant
    Filed: January 26, 2015
    Date of Patent: February 6, 2018
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Tomokazu Sada, Hajime Nishino, Shin Haraguchi
  • Patent number: 9735406
    Abstract: In a battery pack, a plurality of cells are arranged, the cells each have an outlet through which gas generated in the cell is released in one direction, each two of the cells are arranged as one unit, and the each two of the cells are arranged such that directions of gas released through the outlets of the two cells are opposite to each other.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: August 15, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Hajime Nishino, Masato Fujikawa, Mikinari Shimada, Shunsuke Yasui, Shoichiro Watanabe
  • Publication number: 20170162837
    Abstract: A battery case includes a case main body (20), a sealing body that seals an opening of the main body, and an insulating body (40) that is disposed at a part where the case body (20) and the sealing body are in contact with each other. In the battery case, an open end (22) of the case body (20) is crimped to the sealing body, and a dent (36) is formed in the sealing body by pressing the open end (22) against the sealing body.
    Type: Application
    Filed: January 26, 2015
    Publication date: June 8, 2017
    Applicant: SANYO Electric Co., Ltd.
    Inventors: Tomokazu Sada, Hajime Nishino, Shin Haraguchi
  • Patent number: 9368995
    Abstract: In a charging method for a lithium ion battery, constant current charging of the lithium ion battery is performed. The constant current charging includes at least three consecutive charging stages. The at least three consecutive charging stages include consecutive first, second, and third charging stages. The second charging stage has a set current value which is set lower than set current values of the first and third charging stages.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: June 14, 2016
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Hajime Nishino, Mitsuhiro Takeno, Mikinari Shimada, Masato Fujikawa
  • Patent number: 9190647
    Abstract: In the non-aqueous electrolyte secondary battery of the present invention, the separator includes a heat-resistant resin having chlorine atoms as an end group and the positive electrode active material includes a lithium-containing complex oxide containing aluminum atoms in its composition. Even if the chlorine atoms are liberated into the non-aqueous electrolyte, aluminum contained in the positive electrode active material is selectively leached into the non-aqueous electrolyte, thereby suppressing the leaching of other component elements. Consequently, there can be obtained a non-aqueous electrolyte secondary battery excellent in safety and high temperature storage characteristics.
    Type: Grant
    Filed: March 9, 2006
    Date of Patent: November 17, 2015
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Shinji Kasamatsu, Hajime Nishino, Hideharu Takezawa
  • Patent number: 8951674
    Abstract: A non-aqueous electrolyte secondary battery including: a positive electrode having a positive electrode material mixture containing a composite lithium oxide; a negative electrode; a polyolefin separator; a non-aqueous electrolyte; and a heat-resistant insulating layer interposed between the positive and negative electrodes. The positive electrode material mixture has an estimated heat generation rate at 200° C. of not greater than 50 W/kg. The positive electrode and the negative electrode are wound together with the separator and the heat-resistant insulating layer interposed therebetween.
    Type: Grant
    Filed: June 23, 2006
    Date of Patent: February 10, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Hajime Nishino, Shinji Kasamatsu, Hideharu Takezawa, Kazuhiro Okamura, Mikinari Shimada
  • Publication number: 20150010794
    Abstract: In a battery pack, a plurality of cells are arranged, the cells each have an outlet through which gas generated in the cell is released in one direction, each two of the cells are arranged as one unit, and the each two of the cells are arranged such that directions of gas released through the outlets of the two cells are opposite to each other.
    Type: Application
    Filed: December 28, 2012
    Publication date: January 8, 2015
    Applicant: PANASONIC CORPORATION
    Inventors: Hajime Nishino, Masato Fujikawa, Mikinari Shimada, Shunsuke Yasui, Shoichiro Watanabe
  • Publication number: 20140375279
    Abstract: In a charging method for a lithium ion battery, constant current charging of the lithium ion battery is performed. The constant current charging includes at least three consecutive charging stages. The at least three consecutive charging stages include consecutive first, second, and third charging stages. The second charging stage has a set current value which is set lower than set current values of the first and third charging stages.
    Type: Application
    Filed: September 27, 2012
    Publication date: December 25, 2014
    Inventors: Hajime Nishino, Mitsuhiro Takeno, Mikinari Shimada, Masato Fujikawa
  • Patent number: 8883348
    Abstract: An object of the present invention is to provide an electrode for a lithium ion secondary battery that can ensure a high level of safety even when exposed to severe conditions such as a nail penetration test or crush test, and exhibit excellent output characteristics. The present invention relates to an electrode for a lithium ion secondary battery having a material mixture containing active material particles capable of reversibly absorbing and desorbing lithium, and a current collector that carries the material mixture, wherein a surface of the current collector has recessed portions, and an area occupied by the recessed portions accounts for not less than 30% of an a material mixture carrying area of the current collector.
    Type: Grant
    Filed: July 21, 2006
    Date of Patent: November 11, 2014
    Assignee: Panasonic Corporation
    Inventors: Hajime Nishino, Shuji Tsutsumi, Shinji Kasamatsu, Hideharu Takezawa, Mikinari Shimada
  • Patent number: 8673498
    Abstract: A nonaqueous electrolyte secondary battery includes a positive electrode (5), a negative electrode (6) and a porous insulation layer (7). The positive electrode (5) includes a positive electrode current collector (51) and a positive electrode mixture layer (52), and the negative electrode (6) includes a negative electrode current collector (61) and a negative electrode active material layer (62). After charging the nonaqueous electrolyte secondary battery, when a surface of the positive electrode mixture layer (52) and a surface of the negative electrode active material layer (62) are brought in contact with each other, terminals are provided, respectively, on the positive electrode current collector (51) and the negative electrode current collector (62) and a resistance value between the terminals is measured, the resistance value is 1.6 ?·cm2 or more.
    Type: Grant
    Filed: December 13, 2007
    Date of Patent: March 18, 2014
    Assignee: Panasonic Corporation
    Inventors: Yoshiyuki Muraoka, Hajime Nishino, Yukihiro Okada, Mikinari Shimada, Miyuki Nakai
  • Patent number: 8471566
    Abstract: The present invention relates to an apparatus for evaluating an internal short circuit of a battery. An object of the invention is to provide an apparatus capable of evaluating whether or not an internal short circuit has occurred in an electrode group in consideration of pressure applied to the electrode group. An internal short circuit evaluation apparatus according to one embodiment of the invention includes at least a pressure member capable of operating independently and applying pressure to at least a predetermined position of the surface of the electrode group, and a short-circuiting member that is pressed into the predetermined position. An internal short circuit evaluation apparatus according to another embodiment of the invention includes a pressure member having an integrated short-circuiting member.
    Type: Grant
    Filed: January 18, 2010
    Date of Patent: June 25, 2013
    Assignee: Panasonic Corporation
    Inventors: Hajime Nishino, Masato Fujikawa, Mikinari Shimada
  • Patent number: 8399113
    Abstract: An object of the present invention is to provide a high-energy density nonaqueous electrolyte secondary battery that controls the rise in temperature during short circuiting. Used is a nonaqueous electrolyte secondary battery 1, including a battery case 2, and a positive electrode plate 5 having a positive electrode current collector and a positive electrode mixture layer containing a cathode material capable of absorbing and desorbing lithium, a negative electrode plate 6 having a negative electrode current collector and a negative electrode mixture layer containing an anode material capable of absorbing and desorbing lithium, a separator 7 held between the positive and negative electrode plates, and a nonaqueous electrolyte that are enclosed in the battery case, wherein at least one of the positive electrode plate 5 and the negative electrode plate 6 has an electrode plate resistance, as determined in the charged state in the thickness direction when pressurized at 50 kg/cm2, of 0.4 ?·cm2 or more.
    Type: Grant
    Filed: April 10, 2008
    Date of Patent: March 19, 2013
    Assignee: Panasonic Corporation
    Inventors: Kensuke Nakura, Hajime Nishino, Miyuki Nakai, Mikinari Shimada
  • Patent number: 8323812
    Abstract: It is aimed to provide a battery pack capable of securing safety by preventing A battery contained in the battery pack from entering a burning state even if the battery releases high-temperature gas in an abnormal state. An exhaust duct 1C for permitting the flow of gas released from the battery is provided and the gas is exhausted to the outside after reducing the temperature thereof in the exhaust duct 1C. A flow passage area of the exhaust duct 1C is in the range of not less than 0.5 mm2 and not more than 15 mm2 per 1 Ah of the battery capacity. The exhaust duct 1C is provided with a gas cooling portion 1L and a spark trapping portion 1M.
    Type: Grant
    Filed: October 12, 2007
    Date of Patent: December 4, 2012
    Assignee: Panasonic Corporation
    Inventors: Hajime Nishino, Yasushi Hirakawa, Koshi Takamura
  • Patent number: 8309250
    Abstract: A battery includes an electrode group, a case, a sealing member, and a mesh portion. The electrode group includes a positive electrode, a negative electrode opposing the positive electrode, an electrolyte interposed between the positive electrode and the negative electrode. The case has an opening and contains the electrode group. The sealing member closes the opening of the case. The mesh portion is provided so as to face an exhaust hole formed in at least one of the case and the sealing member. The mesh is formed of a thermally conductive material to put off frame coming out of the exhaust hole, in case where the battery is so defective to ignite fire.
    Type: Grant
    Filed: March 3, 2009
    Date of Patent: November 13, 2012
    Assignee: Panasonic Corporation
    Inventors: Hajime Nishino, Masato Fujikawa, Tomohiko Yokoyama, Mikinari Shimada
  • Patent number: 8187748
    Abstract: A non-aqueous electrolyte secondary battery including: a positive electrode having a positive electrode material mixture containing a composite lithium oxide; a negative electrode; a polyolefin separator; a non-aqueous electrolyte; and a heat-resistant insulating layer interposed between the positive and negative electrodes. The positive electrode material mixture has an estimated heat generation rate at 200° C. of not greater than 50 W/kg. The positive electrode and the negative electrode are wound together with the separator and the heat-resistant insulating layer interposed therebetween.
    Type: Grant
    Filed: June 23, 2006
    Date of Patent: May 29, 2012
    Assignee: Panasonic Corporation
    Inventors: Hajime Nishino, Shinji Kasamatsu, Hideharu Takezawa, Kazuhiro Okamura, Mikinari Shimada