Patents by Inventor Yukio Miyaki

Yukio Miyaki 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).

  • Patent number: 10625617
    Abstract: A method of estimating a battery life includes: for a secondary battery having a degradation rate R when X days have elapsed after initial charge of the secondary battery, calculating a degradation estimation value (X+Y) days after the initial charge from degradation master data, the degradation master data being identified with use of conditions of temperature T provided for the calculation and a battery state S provided for the calculation; and deriving number of elapsed days Xcorr giving the degradation rate R based on the identified degradation master data, and calculating the degradation estimation value (Xcorr+Y) days after the initial charge from the identified degradation master data.
    Type: Grant
    Filed: March 5, 2018
    Date of Patent: April 21, 2020
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Yukio Miyaki
  • Publication number: 20200039376
    Abstract: A charging device is provided. The charging device switches to a (n+1)-th charging rate from a n-th charging rate when constant current charging is performed on a secondary battery at the n-th charging rate, at an SOC smaller than an SOC at which a voltage local minimum value appears when an experimental battery is charged at the n-th charging rate. The (n+1)-th charging rate is lower than the n-th charging rate, and n is a natural number.
    Type: Application
    Filed: October 11, 2019
    Publication date: February 6, 2020
    Inventors: Yukio MIYAKI, Sho TAKAHASHI, Takahisa ISHIMATSU, Takahiro SHIRAI, Takamasa ONO
  • Publication number: 20190280253
    Abstract: A battery is provided. The battery includes a battery element; a film-like outer package member configured to accommodate the battery element; and a carbon fiber sheet provided between the battery element and the film-like outer package member, and the carbon fiber sheet includes long fibers.
    Type: Application
    Filed: March 14, 2019
    Publication date: September 12, 2019
    Inventors: Takahisa ISHIMATSU, Yukio MIYAKI
  • Patent number: 10283820
    Abstract: Provided is an electrical storage system including an electrical storage unit that includes one or two or more storage batteries, a storage unit that stores historical information of the electrical storage unit, and a control unit. The control unit acquires the historical information from the storage unit, and performs a control of changing a charging setting voltage value of the electrical storage unit to a low-charging voltage value lower than a typical-charging voltage value in a case where the charging setting voltage value of the electrical storage unit is set to the typical-charging voltage value and in a case where the historical information satisfies a voltage changing condition, and of returning the charging setting voltage value of the electrical storage unit to the typical-charging voltage value after the electrical storage unit performs charging and discharging with the low-charging voltage value.
    Type: Grant
    Filed: May 10, 2016
    Date of Patent: May 7, 2019
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Naoyuki Sugeno, Yukio Miyaki, Kohki Watanabe
  • Publication number: 20180226695
    Abstract: A charging method includes: in a case of charging a lithium ion secondary battery having a positive electrode, a negative electrode, and an electrolyte housed in an exterior body, calculating a value obtained by second-order differentiation of a charging current in constant-voltage charging with respect to a charging electric quantity or time during charging; and, during charging with an environmental temperature of T1 immediately before start of charging, in a case where a change in a sign of the value calculated by second-order differentiation from positive to negative or from negative to positive is observed, if an ambient temperature immediately before start of next and subsequent charging is T2 or lower, making the whole or a part of a current in a constant-current charging current section lower than an initial setting.
    Type: Application
    Filed: May 24, 2016
    Publication date: August 9, 2018
    Inventors: YUKIO MIYAKI, MORIAKI OKUNO, TAKUMA KAWAHARA, KAZUKI HONDA, SHO TAKAHASHI
  • Publication number: 20180194244
    Abstract: A method of estimating a battery life includes: for a secondary battery having a degradation rate R when X days have elapsed after initial charge of the secondary battery, calculating a degradation estimation value (X+Y) days after the initial charge from degradation master data, the degradation master data being identified with use of conditions of temperature T provided for the calculation and a battery state S provided for the calculation; and deriving number of elapsed days Xcorr giving the degradation rate R based on the identified degradation master data, and calculating the degradation estimation value (Xcorr+Y) days after the initial charge from the identified degradation master data.
    Type: Application
    Filed: March 5, 2018
    Publication date: July 12, 2018
    Inventor: YUKIO MIYAKI
  • Publication number: 20180115024
    Abstract: Provided is an electrical storage system including an electrical storage unit that includes one or two or more storage batteries, a storage unit that stores historical information of the electrical storage unit, and a control unit. The control unit acquires the historical information from the storage unit, and performs a control of changing a charging setting voltage value of the electrical storage unit to a low-charging voltage value lower than a typical-charging voltage value in a case where the charging setting voltage value of the electrical storage unit is set to the typical-charging voltage value and in a case where the historical information satisfies a voltage changing condition, and of returning the charging setting voltage value of the electrical storage unit to the typical-charging voltage value after the electrical storage unit performs charging and discharging with the low-charging voltage value.
    Type: Application
    Filed: May 10, 2016
    Publication date: April 26, 2018
    Inventors: Naoyuki SUGENO, Yukio MIYAKI, Kohki WATANABE
  • Publication number: 20170291500
    Abstract: A method of estimating a battery life includes: for a secondary battery having a degradation rate R when X days have elapsed after initial charge of the secondary battery, calculating a degradation estimation value (X+Y) days after the initial charge from degradation master data, the degradation master data being identified with use of conditions of temperature T provided for the calculation and a battery state S provided for the calculation; and deriving number of elapsed days Xcorr giving the degradation rate R based on the identified degradation master data, and calculating the degradation estimation value (Xcorr+Y) days after the initial charge from the identified degradation master data.
    Type: Application
    Filed: June 19, 2017
    Publication date: October 12, 2017
    Inventor: Yukio Miyaki
  • Patent number: 9709632
    Abstract: A method of estimating a battery life includes: for a secondary battery having a degradation rate R when X days have elapsed after initial charge of the secondary battery, calculating a degradation estimation value (X+Y) days after the initial charge from degradation master data, the degradation master data being identified with use of conditions of temperature T provided for the calculation and a battery state S provided for the calculation; and deriving number of elapsed days Xcorr giving the degradation rate R based on the identified degradation master data, and calculating the degradation estimation value (Xcorr+Y) days after the initial charge from the identified degradation master data.
    Type: Grant
    Filed: October 8, 2013
    Date of Patent: July 18, 2017
    Assignee: Sony Corporation
    Inventor: Yukio Miyaki
  • Patent number: 9425441
    Abstract: Provided are an anode capable of preventing an increase in impedance and variations in characteristics and a battery using the anode. An anode active material layer includes at least one kind selected from the group consisting of simple substances, alloys and compounds of silicon and the like capable of forming an alloy with Li. The anode active material layer is formed by a vapor-phase deposition method or the like, and is alloyed with an anode current collector. A coating including lithium carbonate is formed on at least a part of a surface of the anode current collector. Thereby, an increase in impedance can be prevented. Moreover, the anode is less subject to an influence by a difference in a handling environment or storage conditions, so variations in impedance can be prevented.
    Type: Grant
    Filed: January 20, 2005
    Date of Patent: August 23, 2016
    Assignee: SONY CORPORATION
    Inventors: Isamu Konishiike, Kensuke Yamamoto, Tomoo Takada, Yukiko Iijima, Kenichi Kawase, Yukio Miyaki
  • Publication number: 20160133941
    Abstract: The invention provides an anode capable of improving battery characteristics such as cycle characteristics and a battery using it. An anode current collector is provided with an anode active material layer. The anode active material layer contains at least one from the group consisting of simple substances, alloys, and compounds of silicon or the like capable of forming an alloy with Li. Further, the anode active material layer is formed by vapor-phase deposition method or the like, and is alloyed with the anode current collector. Further, Li of from 0.5% to 40% of an anode capacity is previously inserted in the anode active material layer. Therefore, when Li is consumed due to reaction with an electrolyte or the like, Li can be refilled, and potential raise of the anode can be inhibited in the final stage of discharge.
    Type: Application
    Filed: January 19, 2016
    Publication date: May 12, 2016
    Inventors: Isamu KONISHIIKE, Takeru YAMAMOTO, Tomoo TAKADA, Kenichi KAWASE, Yukio MIYAKI
  • Publication number: 20160104894
    Abstract: An anode, an anode current collector, an anode active material and a battery using the anode are provided. The anode includes the anode current collector and the anode active material. The anode current collector has a projection. The anode active material layer is formed via at least one of a vapor deposition method, a liquid-phase deposition method, a sintering method and the like.
    Type: Application
    Filed: December 16, 2015
    Publication date: April 14, 2016
    Inventors: Kenichi Kawase, Tomoo Takada, Yukio Miyaki
  • Patent number: 9246160
    Abstract: An anode, an anode current collector, an anode active material and a battery using the anode are provided. The anode includes the anode current collector and the anode active material. The anode current collector has a projection. The anode active material layer is formed via at least one of a vapor deposition method, a liquid-phase deposition method, a sintering method and the like.
    Type: Grant
    Filed: December 22, 2003
    Date of Patent: January 26, 2016
    Assignee: Sony Corporation
    Inventors: Kenichi Kawase, Tomoo Takada, Yukio Miyaki
  • Publication number: 20140107956
    Abstract: A method of estimating a battery life includes: for a secondary battery having a degradation rate R when X days have elapsed after initial charge of the secondary battery, calculating a degradation estimation value (X+Y) days after the initial charge from degradation master data, the degradation master data being identified with use of conditions of temperature T provided for the calculation and a battery state S provided for the calculation; and deriving number of elapsed days Xcorr giving the degradation rate R based on the identified degradation master data, and calculating the degradation estimation value (Xcorr+Y) days after the initial charge from the identified degradation master data.
    Type: Application
    Filed: October 8, 2013
    Publication date: April 17, 2014
    Applicant: Sony Corporation
    Inventor: Yukio Miyaki
  • Patent number: 8530067
    Abstract: Provided is a battery capable of obtaining superior cycle characteristics. The battery comprises a cylindrical type spirally wound body including a spirally wound laminate of a cathode and an anode with a separator in which an electrolyte solution is impregnated. The anode includes an anode current collector, an outer anode active material layer disposed on an outer winding surface of the anode current collector and an inner anode active material layer disposed on an inner winding surface of the anode current collector. The outer anode active material layer and the inner anode active material layer include Si, Sn or a compound thereof. The capacity ratio between the outer anode active material layer and the inner anode active material layer in at least one region is within a range of 0.6 to 0.8 inclusive.
    Type: Grant
    Filed: April 9, 2004
    Date of Patent: September 10, 2013
    Assignee: Sony Corporation
    Inventors: Yukio Miyaki, Tomoo Takada, Kenichi Kawase, Yukiko Iijima
  • Publication number: 20110226992
    Abstract: An organic electroluminescence material composition including an organic electroluminescence material and a solvent, the organic electroluminescence material being a naphthacene derivative, and the solvent being a solvent which is represented by the following formula (1).
    Type: Application
    Filed: September 16, 2009
    Publication date: September 22, 2011
    Inventors: Motohiro Takeshima, Kiyoshi Ikeda, Takayasu Sado, Tetsuya Inoue, Yoshiaki Obana, Yukio Miyaki, Keisuke Matsuo, Yasunori Kijima
  • Publication number: 20110220886
    Abstract: An organic electroluminescence material composition including a solvent represented by the following formula (1) and an anthracene derivative: wherein ring A is an aliphatic ring or an aromatic ring having 4 to 8 carbon atoms; R1 is a substituent on the ring A; and R2 and R3 are substituents connected to adjacent carbon atoms on the ring A.
    Type: Application
    Filed: September 16, 2009
    Publication date: September 15, 2011
    Applicants: IDEMITSU KOSAN CO., LTD., SONY CORPORATION
    Inventors: Motohiro Takeshima, Atau Ioku, Tetsuya Inoue, Yoshiaki Obana, Yukio Miyaki, Keisuke Matsuo, Yasunori Kijima
  • Patent number: 7990618
    Abstract: A light-diffusing film and screen including same are provided. The light-diffusing film having anisotropy in the diffusion angle includes a translucent support, and a translucent resin layer having irregularities on the surface thereof and being provided on the translucent support. In the light-diffusing film, the maximal value of the loss tangent (tan ?) determined from a dynamic viscoelasticity of the light-diffusing film lies in a temperature range of 0° C. to 60° C.
    Type: Grant
    Filed: August 25, 2005
    Date of Patent: August 2, 2011
    Assignee: Sony Corporation
    Inventors: Yukio Miyaki, Hiroyuki Kiso, Tsutomu Nagahama
  • Patent number: 7838147
    Abstract: The invention provides an electrode which can improve cycle characteristics by reducing structural destruction of an active material layer and reaction between the active material layer and an electrolyte according to charge and discharge, and a battery using it. A current collector made of a metal material containing a metal element which does not form an intermetallic compound with Li, such as Cu, Ni, Ti, Fe, and Cr; the active material layer containing Si, Ge, or an alloy thereof, and a thin film layer made of a metal material containing at least one of metal elements and metalloid elements which can make a solid solution with lithium and do not form an intermetallic compound with lithium, e.g. Cu, Ni are layered in this order. The current collector is alloyed with the active material layer, and the thin film layer is alloyed with the active material layer.
    Type: Grant
    Filed: March 30, 2004
    Date of Patent: November 23, 2010
    Assignee: Sony Corporation
    Inventors: Kenichi Kawase, Tomoo Takada, Yukio Miyaki
  • Patent number: 7626761
    Abstract: A fly's-eye lens sheet having a light-shielding layer includes a fly's-eye lens sheet body provided with fly's-eye lenses on one principal surface thereof, the light-shielding layer provided on the other principal surface of the fly's-eye lens sheet body, and a photosensitive adhesive layer disposed between the fly's-eye lens sheet body and the light-shielding layer, the photosensitive adhesive layer having adhesive and non-adhesive patterns, wherein the light-shielding layer includes a light-shielding portion disposed on the adhesive pattern and transmitting portions disposed on the non-adhesive pattern for transmitting light transmitted through the fly's-eye lenses, the transmitting portions are located at positions corresponding to light-collecting parts of the fly's-eye lenses, and the light-shielding portion contains carbon particles, the content of the carbon particles being 45% to 65% by weight.
    Type: Grant
    Filed: June 2, 2006
    Date of Patent: December 1, 2009
    Assignee: Sony Corporation
    Inventors: Yumi Haga, Yukio Miyaki, Hiroyuki Kiso, Tsutomu Nagahama, Shinichi Matsumura