Patents by Inventor Manabu Miyoshi

Manabu Miyoshi 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: 10559813
    Abstract: The negative electrode includes a current collector, a negative electrode active material layer arranged on a surface of the current collector, and a protective layer arranged on a surface of the negative electrode active material layer. The negative electrode active material layer includes a first negative electrode active material having an aspect ratio defined as “a”/“b” to fall in a range of from two or more to eight or less when a length of the major axis is defined “a” and a length of the minor axis is defined “b.” The protective layer includes a ceramic powder.
    Type: Grant
    Filed: April 5, 2016
    Date of Patent: February 11, 2020
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Atsushi Saito, Tatsuya Eguchi, Manabu Miyoshi, Jun Kaneda, Tomokuni Abe, Hiroki Oshima
  • Patent number: 10424791
    Abstract: It is an assignment to be solved to provide an electrode for secondary battery, electrode in which the active material is suppressed from coming off or falling down from the electricity collector, and that has excellent cyclic performance. It is characterized in that, in an electrode for secondary battery, the electrode being manufactured via an application step of applying a binder resin and an active material onto a surface of electricity collector, said hinder resin is an alkoxysilyl group-containing resin that has a structure being specified by formula (I): wherein “R1” is an alkyl group whose number of carbon atoms is from 1 to 8; “R2” is an alkyl group or alkoxyl group whose number of carbon atoms is from 1 to 8; and “q” is an integer of from 1 to 100.
    Type: Grant
    Filed: January 5, 2016
    Date of Patent: September 24, 2019
    Assignee: Arakawa Chemical Industries, Ltd
    Inventors: Hitotoshi Murase, Toshio Otagiri, Kyoichi Kinoshita, Katsufumi Tanaka, Manabu Miyoshi
  • Publication number: 20190245208
    Abstract: It is an assignment to be solved to provide an electrode for secondary battery, electrode in which the active material is suppressed from coming off or falling down from the electricity collector, and that has excellent cyclic performance. It is characterized in that, in an electrode for secondary battery, the electrode being manufactured via an application step of applying a binder resin and an active material onto a surface of electricity collector, said binder resin is an alkoxysilyl group-containing resin that has a structure being specified by formula (I): wherein “R1” is an alkyl group whose number of carbon atoms is from 1 to 8; “R2” is an alkyl group or alkoxyl group whose number of carbon atoms is from 1 to 8; and “q” is an integer of from 1 to 100.
    Type: Application
    Filed: January 5, 2016
    Publication date: August 8, 2019
    Inventors: Hitotoshi MURASE, Toshio OTAGIRI, Kyoichi KINOSHITA, Katsufumi TANAKA, Manabu MIYOSHI
  • Patent number: 10270099
    Abstract: A positive electrode for lithium-ion secondary battery includes: a lithium metallic oxide with a lamellar rock-salt structure including nickel, cobalt, and manganese; and a phosphate/carbon composite including an olivine-type phosphate compound at least some of which is coated with carbon partially. A rate of a volume resistivity of the phosphate/carbon composite to a volume resistivity of the lithium metallic oxide is 0.034 or less. The olivine-type phosphate compound is expressed by a general formula: LiMhPO4 (where “M” is at least one element selected from the group consisting of Mn, Fe, Co, Ni, Cu, Mg, Zn, V, Ca, Sr, Ba, Ti, Al, Si, B, Te and Mo, and 0<“h”<2). A content of the phosphate/carbon composite is from 15% by mass or more to 35% by mass or less when a summed mass of the lithium metallic oxide and the phosphate/carbon composite is taken as 100% by mass.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: April 23, 2019
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Yuuhi Sato, Manabu Miyoshi, Tatsuya Eguchi, Atsushi Saito
  • Publication number: 20180277852
    Abstract: An object is to provide a nonaqueous electrolyte secondary battery that has an SEI coating with a special structure and has excellent battery characteristics. As an electrolytic solution of the nonaqueous electrolyte secondary battery, an electrolytic solution containing: a salt whose cation is an alkali metal, an alkaline earth metal, or aluminum and whose cation is an alkali metal, an alkaline earth metal, or aluminum; and an organic solvent having a heteroelement is used, wherein, Is>Io is satisfied, and an S,O-containing coating having an S?O structure is formed on the surface of a positive electrode and/or a negative electrode. Alternatively, the above described electrolytic solution is used, and, as a binding agent for negative electrodes, a binding agent formed of a polymer having a hydrophilic group is used.
    Type: Application
    Filed: May 31, 2018
    Publication date: September 27, 2018
    Applicant: THE UNIVERSITY OF TOKYO
    Inventors: Atsuo YAMADA, Yuki YAMADA, Yoshihiro NAKAGAKI, Tomoyuki KAWAI, Kohei MASE, Yuki HASEGAWA, Manabu MIYOSHI, Nobuhiro GODA, Hiroyuki SASAKI, Takefumi FUKUMOTO
  • Publication number: 20180097223
    Abstract: The negative electrode includes a current collector, a negative electrode active material layer arranged on a surface of the current collector, and a protective layer arranged on a surface of the negative electrode active material layer. The negative electrode active material layer includes a first negative electrode active material having an aspect ratio defined as “a”/“b” to fall in a range of from two or more to eight or less when a length of the major axis is defined “a” and a length of the minor axis is defined “b.” The protective layer includes a ceramic powder.
    Type: Application
    Filed: April 5, 2016
    Publication date: April 5, 2018
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Atsushi SAITO, Tatsuya EGUCHI, Manabu MIYOSHI, Jun KANEDA, Tomokuni ABE, Hiroki OSHIMA
  • Patent number: 9935310
    Abstract: Providing a silicon-containing material having a novel structure being distinct from the structure of conventional silicon oxide disproportionated to use. A silicon-containing material according to the present invention includes at least the following: a continuous phase including silicon with Si—Si bond, and possessing a bubble-shaped skeleton being continuous three-dimensionally; and a dispersion phase including silicon with Si—O bond, and involved in an area demarcated by said continuous phase to be in a dispersed state.
    Type: Grant
    Filed: June 25, 2013
    Date of Patent: April 3, 2018
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Yoshihiro Nakagaki, Nobuhiro Goda, Manabu Miyoshi, Yushi Kondo, Kensuke Yotsumoto
  • Publication number: 20180053936
    Abstract: A positive electrode for lithium-ion secondary battery includes: a lithium metallic oxide with a lamellar rock-salt structure including nickel, cobalt, and manganese; and a phosphate/carbon composite including an olivine-type phosphate compound at least some of which is coated with carbon partially. A rate of a volume resistivity of the phosphate/carbon composite to a volume resistivity of the lithium metallic oxide is 0.034 or less. The olivine-type phosphate compound is expressed by a general formula: LiMhPO4 (where “M” is at least one element selected from the group consisting of Mn, Fe, Co, Ni, Cu, Mg, Zn, V, Ca, Sr, Ba, Ti, Al, Si, B, Te and Mo, and 0<“h”<2). A content of the phosphate/carbon composite is from 15% by mass or more to 35% by mass or less when a summed mass of the lithium metallic oxide and the phosphate/carbon composite is taken as 100% by mass.
    Type: Application
    Filed: March 4, 2016
    Publication date: February 22, 2018
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Yuuhi SATO, Manabu MIYOSHI, Tatsuya EGUCHI, Atsushi SAITO
  • Patent number: 9819009
    Abstract: A lithium-ion secondary battery including a negative electrode including negative-electrode active-material particles including an element being capable of sorbing and desorbing lithium ions, and being capable of alloying with lithium; or/and an elementary compound including an element that is capable of alloying with lithium; a positive electrode including a positive-electrode active material that enables Li ions to be sorbed therein and desorbed therefrom; and an electrolytic solution made by dissolving an electrolyte in a solvent. The negative-electrode active-material particles include particles whose particle diameter is 1 ?m or more in an amount of 85% by volume or more thereof when the entirety of said negative-electrode active-material particles, which are included in said negative electrode, is taken as 100% by volume, and the negative-electrode active-material particles exhibit a “D10” being 3 ?m or more. The solvent in the electrolytic solution includes a fluorinated ethylene carbonate.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: November 14, 2017
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Yuichi Hirakawa, Manabu Miyoshi, Hideaki Shinoda, Takayuki Kato, Keiichi Hayashi, Kayo Mizuno, Yoshikatsu Kawabata, Megumi Yamamoto
  • Patent number: 9819008
    Abstract: A negative electrode for lithium-ion secondary battery including a negative electrode that includes a current collector; and a negative-electrode active-material layer formed on a surface of the current collector, and including negative-electrode active-material particles. The negative-electrode active-material particles include an element being capable of sorbing and desorbing lithium ions, and being capable of undergoing an alloying reaction with lithium; or/and an elementary compound being capable of undergoing an alloying reaction with lithium, the negative-electrode active-material particles include particles whose particle diameter is 1 ?m or more in an amount of 85% by volume or more thereof when the entirety is taken as 100% by volume, and exhibit a “D10” being 3 ?m or more. The negative-electrode active-material layer having a thickness that is 1.4 times or more of a “D90” that said negative-electrode active-material particles exhibit.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: November 14, 2017
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Yuichi Hirakawa, Manabu Miyoshi, Hideaki Shinoda, Takayuki Kato, Keiichi Hayashi, Kayo Mizuno, Yoshikatsu Kawabata, Megumi Yamamoto
  • Patent number: 9819007
    Abstract: A negative-electrode material has negative-electrode active-material particles including: an element being capable of sorbing and desorbing lithium ions, and being capable of undergoing an alloying reaction with lithium; or/and an elementary compound being capable of undergoing an alloying reaction with lithium. The negative-electrode active-material particles includes particles whose particle diameter is 1 ?m or more in an amount of 85% by volume or more of them when the entirety is taken as 100% by volume, exhibit a BET specific surface area that is 6 m2/g or less, and exhibits a “D50” that is 4.5 ?m or more.
    Type: Grant
    Filed: October 3, 2012
    Date of Patent: November 14, 2017
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Yuichi Hirakawa, Manabu Miyoshi, Hideaki Shinoda, Takayuki Kato, Keiichi Hayashi, Kayo Mizuno, Yoshikatsu Kawabata, Megumi Yamamoto
  • Patent number: 9774039
    Abstract: It is an assignment to provide the following: a negative-electrode material for electric storage device, a negative electrode for electric storage device, and an electric storage device, negative-electrode material, negative electrode and electric storage device in which SiOx is used as a negative-electrode active material, which excel in the conductivity, and which can inhibit the discharge capacity from declining; as well as a vehicle having the electric storage device on-board.
    Type: Grant
    Filed: October 5, 2012
    Date of Patent: September 26, 2017
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Megumi Yamamoto, Manabu Miyoshi, Hideaki Shinoda
  • Patent number: 9735422
    Abstract: Provided is a negative-electrode active material, which is capable of constituting a lithium ion secondary cell exhibiting excellent cell characteristics. The negative-electrode active material for a lithium ion secondary cell of the invention includes a mixed material of silicon oxide particles composed of silicon oxide and rod-shaped iron oxide particles composed of iron oxide. It is preferable to use iron oxide particles having a plurality of pores in a surface, and an electrode reaction is effectively carried out.
    Type: Grant
    Filed: May 10, 2012
    Date of Patent: August 15, 2017
    Assignee: NATIONAL UNIVERSITY CORPORATION GUNMA UNIVERSITY
    Inventors: Keiichi Hayashi, Manabu Miyoshi, Takayuki Hirose, Hitotoshi Murase, Hideyuki Morimoto, Shin-ichi Tobishima
  • Patent number: 9716267
    Abstract: A parameter for producing a positive electrode having excellent safety, and a positive electrode active material layer satisfying the parameter. The positive electrode active material layer includes a first positive electrode active material, a second positive electrode active material having a lower charge/discharge potential than the first positive electrode active material, and an additive. When the first positive electrode active material tap density is defined as dt1, the second positive electrode active material tap density is defined as dt2, a true density of the additive is defined as d3, a mass percentage of the first positive electrode active material is defined as Wt1, a mass percentage of the second positive electrode active material is defined as Wt2, a mass percentage of the additive is defined as Wt3, and a porosity of the positive electrode active material layer is defined as p, the positive electrode active material layer satisfies (1?p)×(Wt1/dt1)/((Wt1/dt1)+(Wt2/dt2)+(Wt3/d3))<0.38.
    Type: Grant
    Filed: December 26, 2014
    Date of Patent: July 25, 2017
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Tatsuya Eguchi, Takeshi Maki, Manabu Miyoshi, Yuuhi Sato, Jun Kaneda, Yusuke Yamamoto, Takahiro Sugioka
  • Publication number: 20170194646
    Abstract: It is an assignment to be solved to provide an electrode for secondary battery, electrode in which the active material is suppressed from coming off or falling down from the electricity collector, and that has excellent cyclic performance. It is characterized in that, in an electrode for secondary battery, the electrode being manufactured via an application step of applying a binder resin and an active material onto a surface of electricity collector, said binder resin is an alkoxysilyl group-containing resin that has a structure being specified by formula (I): wherein “R1” is an alkyl group whose number of carbon atoms is from 1 to 8; “R2” is an alkyl group or alkoxyl group whose number of carbon atoms is from 1 to 8; and “q” is an integer of from 1 to 100.
    Type: Application
    Filed: January 5, 2016
    Publication date: July 6, 2017
    Inventors: Hitotoshi MURASE, Toshio OTAGIRI, Kyoichi KINOSHITA, Katsufumi TANAKA, Manabu MIYOSHI
  • Publication number: 20170084905
    Abstract: A negative-electrode stuff has negative-electrode active-material particles including: an element being capable of sorbing and desorbing lithium ions, and being capable of undergoing an alloying reaction with lithium; or/and an elementary compound being capable of undergoing an alloying reaction with lithium. The negative-electrode active-material particles includes particles whose particle diameter is 1 ?m or more in an amount of 85% by volume or more of them when the entirety is taken as 100% by volume, exhibit a BET specific surface area that is 6 m2/g or less, and exhibits a “D50” that is 4.5 ?m or more.
    Type: Application
    Filed: December 6, 2016
    Publication date: March 23, 2017
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Yuichi HIRAKAWA, Manabu MIYOSHI, Hideaki SHINODA, Takayuki KATO, Keiichi HAYASHI, Kayo MIZUNO, Yoshikatsu KAWABATA, Megumi YAMAMOTO
  • Publication number: 20170084906
    Abstract: A negative-electrode stuff has negative-electrode active-material particles including: an element being capable of sorbing and desorbing lithium ions, and being capable of undergoing an alloying reaction with lithium; or/and an elementary compound being capable of undergoing an alloying reaction with lithium. The negative-electrode active-material particles includes particles whose particle diameter is 1 ?m or more in an amount of 85% by volume or more of them when the entirety is taken as 100% by volume, exhibit a BET specific surface area that is 6 m2/g or less, and exhibits a “D50” that is 4.5 ?m or more.
    Type: Application
    Filed: December 6, 2016
    Publication date: March 23, 2017
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Yuichi HIRAKAWA, Manabu MIYOSHI, Hideaki SHINODA, Takayuki KATO, Keiichi HAYASHI, Kayo MIZUNO, Yoshikatsu KAWABATA, Megumi YAMAMOTO
  • Patent number: 9590239
    Abstract: Provided is a negative electrode for a nonaqueous secondary battery which achieves both suppression of reductive decomposition of an electrolyte or an electrolytic solution and suppression of an increase in resistance. Also provided are a method for producing such a negative electrode and a nonaqueous secondary battery employing such a negative electrode. A polymer coating layer is formed so as to coat at least part of surfaces of negative electrode active material particles containing silicon oxide (SiOx; 0.5?x?1.6). The polymer coating layer contains a cationic polymer having a positive zeta potential under neutral conditions. Since silicon oxide has a negative zeta potential, a thin uniform coating layer can be formed owing to Coulomb's force.
    Type: Grant
    Filed: February 12, 2014
    Date of Patent: March 7, 2017
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Tomokuni Abe, Hiroki Oshima, Yuya Sato, Kisena Yoshida, Nobuhiro Goda, Manabu Miyoshi
  • Patent number: 9577246
    Abstract: Provided is a negative electrode active material containing SiOx and carbonaceous particles containing graphite and having both good discharge capacity and good electric conductivity. Also provided is a negative electrode using the negative electrode active material and a nonaqueous electrolyte secondary battery. When the carbonaceous particles have an average particle diameter D50 of ? (?m) and a BET specific surface area of ? (m2/g), the ? and the ? satisfy the following Formulae (1) and (2). ???(12/18)?+12??(1) 5???15??(2).
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: February 21, 2017
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Megumi Yamamoto, Hideaki Shinoda, Hirokuni Akiyama, Manabu Miyoshi
  • Publication number: 20170018764
    Abstract: A parameter for producing a positive electrode having excellent safety, and a positive electrode active material layer satisfying the parameter. The positive electrode active material layer includes a first positive electrode active material, a second positive electrode active material having a lower charge/discharge potential than the first positive electrode active material, and an additive. When the first positive electrode active material tap density is defined as dt1, the second positive electrode active material tap density is defined as dt2, a true density of the additive is defined as d3, a mass percentage of the first positive electrode active material is defined as Wt1, a mass percentage of the second positive electrode active material is defined as Wt2, a mass percentage of the additive is defined as Wt3, and a porosity of the positive electrode active material layer is defined as p, the positive electrode active material layer satisfies (1?p)×(Wt1/dt1)/((Wt1/dt1)+(Wt2/dt2)+(Wt3/d3))<0.38.
    Type: Application
    Filed: December 26, 2014
    Publication date: January 19, 2017
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Tatsuya EGUCHI, Takeshi MAKI, Manabu MIYOSHI, Yuuhi SATO, Jun KANEDA, Yusuke YAMAMOTO, Takahiro SUGIOKA