Patents by Inventor Atsuko Takahagi

Atsuko Takahagi 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: 20210257699
    Abstract: A battery includes a battery element, housing body, and valve device. The housing body has a laminate including a base material, barrier, and heat-sealable resin layers. The valve device is in communication with the housing body inside. A joined edge portion in which the mutually facing heat-sealable resin layers are fused together is formed in a housing body peripheral edge portion. The valve device includes first and second portions. A valve mechanism reduces the housing body internal pressure if it is increased due to gas generated in the housing body is formed in the first portion. An air passage guides gas generated in the housing body toward the valve mechanism is formed in the second portion. The first portion is located on a joined edge portion edge outer side. At least a portion of the second portion is sandwiched between the heat-sealable resin layers in the joined edge portion.
    Type: Application
    Filed: May 28, 2019
    Publication date: August 19, 2021
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Youichi MOCHIZUKI, Atsuko TAKAHAGI, Rikiya YAMASHITA, Miho SASAKI
  • Publication number: 20210257696
    Abstract: A battery includes a battery element, housing body, and valve device. The housing body includes at least one laminate and an interior space wherein the battery element is housed, a first housing portion covers the interior space from a first side in a thickness direction, and a second housing portion that covers the interior space from a second side opposite to the first side in the thickness direction. The valve device attaches to the housing body and makes the interior space communicate with an external space. A joined edge portion is formed in the housing body by the first and second housing portion being fused along respective peripheral edges. The valve device is between the first and second housing portion in the joined edge portion, and an inner end of the valve device protrudes from an inner edge of the joined edge portion toward the interior space.
    Type: Application
    Filed: May 28, 2019
    Publication date: August 19, 2021
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Youichi MOCHIZUKI, Atsuko TAKAHAGI, Rikiya YAMASHITA, Miho SASAKI
  • Publication number: 20210249729
    Abstract: A battery includes a battery element, a housing body, and a valve device. The housing body houses the battery element. The valve device is in communication with the inside of the housing body. Heat-sealable resin layers face each other in a peripheral edge portion of the housing body. A joined edge portion in which the mutually facing heat-sealable resin layers are fused together is formed in the peripheral edge portion of the housing body. The valve device is configured to reduce an internal pressure of the housing body if the internal pressure is increased due to gas generated in the housing body. The valve device includes a first portion that is located on an outer side of an edge of the joined edge portion and a second portion that is sandwiched between the heat-sealable resin layers in the joined edge portion.
    Type: Application
    Filed: May 28, 2019
    Publication date: August 12, 2021
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Youichi MOCHIZUKI, Atsuko TAKAHAGI, Rikiya YAMASHITA, Miho SASAKI
  • Publication number: 20210249730
    Abstract: A valve device is a valve device for attaching to a storage body. This valve device is provided with a valve device main body and an adhesive member. The valve device main body is configured to reduce pressure inside the storage body in the case where the pressure increases due to gas produced inside the storage body. The adhesive member is adhered to an outer periphery of the valve device main body, and is configured to adhere to the storage body. A hole through which the gas passes is formed in an end face of the valve device main body.
    Type: Application
    Filed: August 20, 2019
    Publication date: August 12, 2021
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Miho SASAKI, Atsuko TAKAHAGI
  • Publication number: 20210234222
    Abstract: This adhesive film for a metal terminal is interposed between a metal terminal electrically connected to an electrode of a battery element and a wrapping material sealing the battery element and is provided with at least one resin layer having a polyolefin backbone. When the adhesive film for the metal terminal is measured with a differential scanning calorimeter, a melting peak is observed within the range of 120° C. to 156° C.
    Type: Application
    Filed: June 20, 2019
    Publication date: July 29, 2021
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Kenta HIRAKI, Jun TANAKA, Takahiro KATO, Atsuko TAKAHAGI, Rikiya YAMASHITA
  • Publication number: 20210218106
    Abstract: A battery includes a battery element, a housing body, and a valve device. The housing body is constituted by at least one laminate and includes an interior space in which the battery element is housed, a first housing portion that covers the interior space from a first side, and a second housing portion that covers the interior space from a second side. The valve device is attached to the housing body and can make interior space of housing body be in communication with an external space. A joined edge portion is formed in housing body as a result of the first and second housing portion being fused along respective peripheral edge portions. The valve device is sandwiched between the first and second housing portion in the joined edge portion, and an inner end of the valve device protrudes from an inner edge of joined edge portion toward the interior space.
    Type: Application
    Filed: May 28, 2019
    Publication date: July 15, 2021
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Youichi MOCHIZUKI, Atsuko TAKAHAGI, Rikiya YAMASHITA, Miho SASAKI
  • Patent number: 10964983
    Abstract: A packaging material for batteries, which is not susceptible to the formation of a pinhole or cracking during the forming, while having excellent formability, and is effectively suppressed in curling after the forming, which is formed of a laminate with at least a base layer, an adhesive layer, a metal layer and a thermally fusible resin layer in this order, and wherein: the tensile modulus of elasticity of the base layer in one direction and the tensile modulus of elasticity of the base layer in a perpendicular direction in the same plane are both within the range of from 400 N/15 mm to 1,000 N/15 mm (inclusive); and the absolute value of the difference between the tensile modulus of elasticity of the base layer in the one direction and the tensile modulus of elasticity of the base layer in the other is 150 N/15 mm or less.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: March 30, 2021
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventor: Atsuko Takahagi
  • Publication number: 20210043878
    Abstract: A packaging material for batteries including a laminate in which at least a base material layer, a metal layer, and a sealant layer are laminated in order. The battery packaging material satisfies the relationships of: (A1?A2)?60 N/15 mm; and (B1?B2)?50 N/15 mm. A1 is a stress in elongation by 10% in the MD direction and B1 is a stress in elongation by 10% in the TD direction in the laminate, and A2 is a stress in elongation by 10% in the MD direction and B2 is a stress in elongation by 10% in the TD direction in the base material layer.
    Type: Application
    Filed: October 22, 2020
    Publication date: February 11, 2021
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Atsuko TAKAHAGI, Rikiya YAMASHITA, Daisuke YASUDA
  • Publication number: 20200381679
    Abstract: A packaging material for batteries, which is not susceptible to warping, while having excellent formability. A packaging material for batteries is configured from a laminate that is sequentially provided at least with one or more substrate layers, a barrier layer, a cured resin layer and a thermally fusible resin layer in this order. At least one of the substrate layers is formed of a polybutylene terephthalate film; and the value (X/Y) which is obtained by dividing the puncture strength X (N) of the laminate by the thickness Y (?m) of the polybutylene terephthalate film, the puncture strength X (N) being determined by piercing the laminate from the substrate layer side by a method that complies with the prescription of JIS Z1707 (1997), is 1.02 N/?m or more.
    Type: Application
    Filed: March 20, 2018
    Publication date: December 3, 2020
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Kenta HIRAKI, Atsuko TAKAHAGI, Rikiya YAMASHITA
  • Patent number: 10854855
    Abstract: A packaging material for batteries including a laminate in which at least a base material layer, a metal layer, and a sealant layer are laminated in order, the sum (A+B) of a value A of stress when 40% extended/stress when 10% extended in the direction MD and a value B of stress when 40% extended/stress when 10% extended in the direction TD of the laminate satisfying the relationship A+B?2.50.
    Type: Grant
    Filed: August 24, 2015
    Date of Patent: December 1, 2020
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Atsuko Takahagi, Rikiya Yamashita, Daisuke Yasuda
  • Patent number: 10556400
    Abstract: Battery packaging material wherein a sheet-like laminated body is formed by sequentially stacking at least a base layer, metal layer, and sealant layer, the battery packaging material being equipped with substantially rectangular space that is formed to protrude from the sealant layer side toward the base layer side, and accommodates a battery element on the sealant layer side. In planar view from the base layer side view, a first and second curved sections are provided from the center portion toward the battery packaging material end parts, in a cross section in the thickness direction on a line connecting opposing corner parts protruding in a substantially rectangular shape. The thickness (a) of the metal layer at the first curved section, (c) of the metal layer at the second curved section, and (b) of the metal layer at the section located between the first and second curved sections, satisfy the following relationship a?b>c or a?c>b.
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: February 11, 2020
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Makoto Amano, Rikiya Yamashita, Atsuko Takahagi
  • Publication number: 20190363312
    Abstract: Aluminum alloy foil that, when used for battery packaging material, unlikely to develop pinholes or cracks even during molding of battery packaging material, and can exhibit excellent moldability. Aluminum alloy foil, which is for use in battery packaging material, wherein, with respect to cross section obtained by cutting aluminum alloy foil in vertical direction to rolling direction of aluminum alloy foil, which is a vertical direction to surface of aluminum alloy foil, proportion of total area of a {111} plane in total area of crystal planes of face-centered cubic structure, obtained by performing crystal analysis using EBSD method, is 10% or more; and with respect to cross section, a number average grain diameter R (rpm) of crystals in face-centered cubic structure, obtained by performing crystal analysis using EBSD method, satisfies following equation: number average grain diameter R?0.056X+2.0, where X=thickness (rpm) of aluminum alloy foil.
    Type: Application
    Filed: December 27, 2017
    Publication date: November 28, 2019
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Atsuko TAKAHAGI, Tatsuro ISHITOBI, Chiaki HATSUTA, Makoto KOMUKAI, Mayo SUGANO
  • Publication number: 20190267581
    Abstract: A packaging material for batteries, which is not susceptible to the formation of a pinhole or cracking during the forming, while having excellent formability, and is effectively suppressed in curling after the forming, which is formed of a laminate with at least a base layer, an adhesive layer, a metal layer and a thermally fusible resin layer in this order, and wherein: the tensile modulus of elasticity of the base layer in one direction and the tensile modulus of elasticity of the base layer in a perpendicular direction in the same plane are both within the range of from 400 N/15 mm to 1,000 N/15 mm (inclusive); and the absolute value of the difference between the tensile modulus of elasticity of the base layer in the one direction and the tensile modulus of elasticity of the base layer in the other is 150 N/15 mm or less.
    Type: Application
    Filed: May 10, 2019
    Publication date: August 29, 2019
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventor: Atsuko TAKAHAGI
  • Patent number: 10381611
    Abstract: A packaging material for a cell including a layered film in which at least a base-material layer, an adhesive layer, a metallic layer, and a sealant layer are layered in the stated order. The packaging material for a cell including a layered body in which at least a base-material layer, an adhesive layer, a metallic layer, and a sealant layer are layered in the stated order, wherein the packaging material for a cell can be imparted with highly exceptional moldability, and dramatically less prone to pinholing and cracking during molding by using, as the metallic layer, an aluminum foil having 0.2% yield strength of 58-121 N/mm2 when a tensile test is performed in the direction parallel to the rolling direction.
    Type: Grant
    Filed: November 2, 2016
    Date of Patent: August 13, 2019
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Atsuko Takahagi, Hirohisa Akita, Sumito Nishida
  • Patent number: 10347876
    Abstract: A packaging material for batteries, which is not susceptible to the formation of a pinhole or cracking during the forming, while having excellent formability, and is effectively suppressed in curling after the forming, which is formed of a laminate with at least a base layer, an adhesive layer, a metal layer and a thermally fusible resin layer in this order, and wherein: the tensile modulus of elasticity of the base layer in one direction and the tensile modulus of elasticity of the base layer in a perpendicular direction in the same plane are both within the range of from 400 N/15 mm to 1,000 N/15 mm (inclusive); and the absolute value of the difference between the tensile modulus of elasticity of the base layer in the one direction and the tensile modulus of elasticity of the base layer in the other is 150 N/15 mm or less.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: July 9, 2019
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventor: Atsuko Takahagi
  • Patent number: 10141548
    Abstract: A method for producing a battery packaging material, the method including the steps of: providing a battery packaging material including a laminate in which at least a base material layer, a metal layer, and a sealant layer containing a polyolefin resin are laminated in this order; and confirming that the intensity ratio X=P/Q is in the range of 0.05 to 0.80 where P is a peak intensity P at 1650 cm?1 originating from C?O stretching vibration of the amide group of an amide-based lubricant, and Q is a peak intensity Q at 1460 cm?1 originating from bending vibration of the group —CH2— of the polyolefin resin, each of which is measured from an absorption spectrum obtained by splitting reflected light in irradiation of the surface of the sealant layer with an infrared ray, and P/Q is a ratio of the peak intensity P to the peak intensity Q.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: November 27, 2018
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Makoto Amano, Rikiya Yamashita, Yoichi Motizuki, Atsuko Takahagi
  • Patent number: 10128471
    Abstract: To provide a technique for a battery-packaging material made of a film-form laminate in which at least a base material layer, an adhesive layer, a metal layer, and a sealant layer are laminated successively, wherein: electrolytic solution resistance is further improved by including a polyester film in the base material layer; cracks and pinholes are less likely to be created at the time of forming the polyester-film-including base material layer; and formability is improved. This battery-packaging material is made of a laminate in which at least a base material layer, an adhesive layer, a metal layer, and a sealant layer are laminated successively, wherein: the base material layer includes a polyester film; and the metal layer is an aluminum foil in which the 0.2% proof stress at the time of performing a tensile test in a direction parallel to the rolling direction is from 55 to 140 N/mm2.
    Type: Grant
    Filed: December 1, 2014
    Date of Patent: November 13, 2018
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Atsuko Takahagi, Hirohisa Akita, Sumito Nishida, Rikiya Yamashita
  • Publication number: 20180312943
    Abstract: A battery packaging material that is unlikely to develop pinholes or cracks during molding, and has excellent moldability, comprising at least an aluminum alloy foil layer, wherein for any 100 aluminum alloy grains positioned within a field of view of a scanning electron microscope in a cross section of the aluminum alloy foil layer in a thickness direction, an average grain diameter, which is an average value of a maximum diameter x of the 100 grains, is 10.0 ?m or less, where the maximum diameter x is defined as a linear distance connecting a leftmost end of each of the grains in a direction perpendicular to the thickness direction and a rightmost end of the grain in the direction perpendicular to the thickness direction.
    Type: Application
    Filed: October 28, 2016
    Publication date: November 1, 2018
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Makoto AMANO, Atsuko TAKAHAGI, Rikiya YAMASHITA
  • Patent number: 10020471
    Abstract: Provided is a battery packaging material comprising a film-like layered body obtained by sequentially layering at least a substrate layer, an adhesive layer, a metal layer and a sealant layer, the battery packaging material exhibiting excellent moldability and being unlikely to crack or form a pinhole during the molding thereof. A battery packaging material comprising a layered body obtained by sequentially layering at least a substrate layer, an adhesive layer, a metal layer and a sealant layer, wherein the substrate layer is configured in a manner such that the sum (A+B) of a value (A) equal to stress when stretching to 50% in the MD direction/stress when stretching to 5% and a value (B) equal to stress when stretching to 50% in the TD direction/stress when stretching to 5% satisfies the relationship A+B?3.5.
    Type: Grant
    Filed: February 18, 2015
    Date of Patent: July 10, 2018
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Atsuko Takahagi, Rikiya Yamashita
  • Publication number: 20180069203
    Abstract: A packaging material for batteries, which is not susceptible to the formation of a pinhole or cracking during the forming, while having excellent formability, and is effectively suppressed in curling after the forming, which is formed of a laminate with at least a base layer, an adhesive layer, a metal layer and a thermally fusible resin layer in this order, and wherein: the tensile modulus of elasticity of the base layer in one direction and the tensile modulus of elasticity of the base layer in a perpendicular direction in the same plane are both within the range of from 400 N/15 mm to 1,000 N/15 mm (inclusive); and the absolute value of the difference between the tensile modulus of elasticity of the base layer in the one direction and the tensile modulus of elasticity of the base layer in the other is 150 N/15 mm or less.
    Type: Application
    Filed: March 25, 2016
    Publication date: March 8, 2018
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventor: Atsuko TAKAHAGI