Patents by Inventor Hiroshi Akama
Hiroshi Akama 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).
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Publication number: 20200406209Abstract: To provide a reducing gas supplying apparatus and a method for manufacturing a processed target object, which are capable of supplying a reducing liquid without causing it to scatter. The reducing gas supplying apparatus 1 includes a chamber 10 defining a space where soldering is performed on a target object T, a vaporizer 20 for generating a reducing gas FG to be supplied into the chamber 10 by receiving a reducing liquid FL to be converted into the reducing gas FG and vaporizing the reducing liquid FL, an intermediate container 30 for temporarily reserving the reducing liquid FL before the reducing liquid FL in a reducing liquid bottle 80 is introduced into the vaporizer 20, a transport tube 51, a supply tube 41, a transport part 58 for delivering the reducing liquid FL in the bottle 80 into the intermediate container 30, and a supply part 48 for delivering the reducing liquid. FL in the intermediate container 30 into the vaporizer 20.Type: ApplicationFiled: July 24, 2019Publication date: December 31, 2020Inventors: Yutaka MATSUMOTO, Hiroshi AKAMA
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Publication number: 20200358077Abstract: The present invention aims to provide an electrode for lithium ion batteries which exhibits excellent electrical conductivity even if its thickness is large. The electrode for lithium ion batteries of the present invention includes a first main surface to be located adjacent to a separator of a lithium ion battery and a second main surface to be located adjacent to a current collector of the lithium ion battery. The electrode has a thickness of 150 to 5000 ?m. The electrode contains, between the first main surface and the second main surface, a conductive member (A) made of an electronically conductive material and a large number of active material particles (B). At least part of the conductive member (A) forms a conductive path that electrically connects the first main surface to the second main surface. The conductive path is in contact with the active material particles (B) around the conductive path.Type: ApplicationFiled: June 12, 2020Publication date: November 12, 2020Applicants: SANYO CHEMICAL INDUSTRIES, LTD., NISSAN MOTOR CO., LTD.Inventors: Yusuke MIZUNO, Yasuhiro SHINDO, Yasuhiro TSUDO, Kenichi KAWAKITA, Yuki KUSACHI, Yasuhiko OHSAWA, Hajime SATOU, Hiroshi AKAMA, Hideaki HORIE
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Publication number: 20200358078Abstract: The present invention aims to provide an electrode for lithium ion batteries which exhibits excellent electrical conductivity even if its thickness is large. The electrode for lithium ion batteries of the present invention includes a first main surface to be located adjacent to a separator of a lithium ion battery and a second main surface to be located adjacent to a current collector of the lithium ion battery. The electrode has a thickness of 150 to 5000 ?m. The electrode contains, between the first main surface and the second main surface, a conductive member (A) made of an electronically conductive material and a large number of active material particles (B). At least part of the conductive member (A) forms a conductive path that electrically connects the first main surface to the second main surface. The conductive path is in contact with the active material particles (B) around the conductive path.Type: ApplicationFiled: June 12, 2020Publication date: November 12, 2020Applicants: SANYO CHEMICAL INDUSTRIES, LTD., NISSAN MOTOR CO., LTD.Inventors: Yusuke MIZUNO, Yasuhiro SHINDO, Yasuhiro TSUDO, Kenichi KAWAKITA, Yuki KUSACHI, Yasuhiko OHSAWA, Hajime SATOU, Hiroshi AKAMA, Hideaki HORIE
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Publication number: 20200243867Abstract: A resin current collector provides means for improving the cycle characteristics in a lithium ion battery and includes a polyolefin resin, and a conductive carbon filler. The total surface area of the conductive carbon filler contained in 1 g of the resin current collector is 7.0 m2 or more and 10.5 m2 or less.Type: ApplicationFiled: October 15, 2018Publication date: July 30, 2020Inventors: Ryosuke Kusano, Yoshihiro Ikeda, Yasuhiro Tsudo, Yasuhiko Ohsawa, Yuki Kusachi, Hajime Satou, Hiroshi Akama, Hideaki Horie
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Patent number: 10727476Abstract: The present invention aims to provide an electrode for lithium ion batteries which exhibits excellent electrical conductivity even if its thickness is large. The electrode for lithium ion batteries of the present invention includes a first main surface to be located adjacent to a separator of a lithium ion battery and a second main surface to be located adjacent to a current collector of the lithium ion battery. The electrode has a thickness of 150 to 5000 ?m. The electrode contains, between the first main surface and the second main surface, a conductive member (A) made of an electronically conductive material and a large number of active material particles (B). At least part of the conductive member (A) forms a conductive path that electrically connects the first main surface to the second main surface. The conductive path is in contact with the active material particles (B) around the conductive path.Type: GrantFiled: April 12, 2018Date of Patent: July 28, 2020Assignees: SANYO CHEMICAL INDUSTRIES, LTD., NISSAN MOTOR CO., LTD.Inventors: Yusuke Mizuno, Yasuhiro Shindo, Yasuhiro Tsudo, Kenichi Kawakita, Yuki Kusachi, Yasuhiko Ohsawa, Hajime Satou, Hiroshi Akama, Hideaki Horie
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Patent number: 10707493Abstract: The present invention provides an electrode capable of reducing contact resistance between a resin current collector and the electrode, and a method of manufacturing the electrode. The electrode of the present invention includes a positive electrode current collector 11 containing a polymer material and a conductive filler, a positive electrode active material layer 13 disposed adjacent to the positive electrode current collector, and a concavoconvex shape 11c corresponding to a concavoconvex shape 13c formed on a surface of the positive electrode active material layer that is in contact with the positive electrode current collector, the concavoconvex shape being formed on a surface of the positive electrode current collector that is in contact with the positive electrode active material layer.Type: GrantFiled: September 21, 2016Date of Patent: July 7, 2020Assignee: NISSAN MOTOR CO., LTD.Inventors: Yasuhiko Ohsawa, Hajime Satou, Yuki Kusachi, Hiroshi Akama, Hideaki Horie, Masatoshi Okura
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Patent number: 10700345Abstract: To provide an electrode for a lithium ion secondary battery capable of enhancing a charge and discharge cycle durability of an electrode that uses a resin current collector. An electrode for a lithium ion secondary battery provided with a resin current collector including a polyolefin resin matrix and a conductive filler A, and an electrode active material layer provided on the resin current collector, in which a crosslinked resin thin-film layer, which contains an Ni filler as a conductive filler B that does not alloy with Li and which has impermeability to the electrolyte solution, is arranged between the resin current collector and a negative electrode active material layer.Type: GrantFiled: February 14, 2017Date of Patent: June 30, 2020Assignee: NISSAN MOTOR CO., LTD.Inventors: Yasuhiko Ohsawa, Yuki Kusachi, Hajime Satou, Hiroshi Akama, Hideaki Horie, Naofumi Shoji, Masatoshi Okura
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Patent number: 10673057Abstract: To provide a negative electrode for a lithium ion battery in which a volume change of a silicon-based negative electrode active material due to charging and discharging is small, and a production method therefor. Provided is a method for producing a negative electrode for a lithium ion battery, the method including a step of forming a coating film on a current collector or a separator by using a slurry containing a negative electrode active material composition, which contains a silicon-based negative electrode active material and a carbon-based negative electrode active material, and a dispersion medium, in which the method further includes a step of doping the silicon-based negative electrode active material with lithium ions and a step of doping the carbon-based negative electrode active material with lithium ions before or after the step of forming the coating film and before assembling a lithium ion battery, and the method does not substantially include a step of drying the coating film.Type: GrantFiled: December 19, 2017Date of Patent: June 2, 2020Assignee: NISSAN MOTOR CO., LTD.Inventors: Kazuya Tsuchida, Yusuke Nakashima, Yasuhiko Ohsawa, Yuki Kusachi, Hajime Satou, Hiroshi Akama, Hideaki Horie
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Patent number: 10658674Abstract: An electrode for improving the durability of a battery includes a current collector and an active material layer. The current collector has a conductive resin layer including a polymer material and a conductive filler. The electrode further includes a conductive member, which is in electrical contact with the conductive filler, between the current collector and the active material layer.Type: GrantFiled: August 21, 2015Date of Patent: May 19, 2020Assignee: NISSAN MOTOR CO., LTD.Inventors: Yasuhiko Ohsawa, Hajime Satou, Hiroshi Akama, Hideaki Horie, Yusuke Mizuno, Hiroshi Fukumoto, Masatoshi Okura, Yasuhiro Shindo, Yasuhiro Tsudo
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Publication number: 20200136125Abstract: The present invention provides a method of producing an electrode active material molded body for a lithium-ion battery suitable for the production of a lithium-ion battery, and a method of producing a lithium-ion battery using the electrode active material molded body, wherein the methods can reduce the time, work, equipment, and the like required for the production. The present invention provides a method of producing an electrode composition molded body for a lithium-ion battery, including: a molding step of molding a composition containing an electrode active material for a lithium-ion battery and an electrolyte solution into an electrode active material molded body for a lithium-ion battery as an unbound product of the electrode active material for a lithium-ion battery, wherein the composition has an electrolyte solution content of 0.1 to 40 wt % based on the weight of the composition.Type: ApplicationFiled: April 20, 2018Publication date: April 30, 2020Applicants: SANYO CHEMICAL INDUSTRIES, LTD., NISSAN MOTOR CO., LTD.Inventors: Takuya SUENAGA, Kenichi KAWAKITA, Yuki KUSACHI, Yasuhiko OHSAWA, Hajime SATOU, Hiroshi AKAMA, Hideaki HORIE
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Publication number: 20200091508Abstract: To provide a non-aqueous electrolyte secondary battery negative electrode material that can be produced even without performing a heat treatment at a high temperature such as 2,000° C. or higher and can have the discharge capacity further increased. The non-aqueous electrolyte secondary battery negative electrode material according to the invention has a core portion including carbonaceous negative electrode active material particles; and a shell portion including a polyimide and silicon-based negative electrode active material particles and/or tin-based negative electrode active material particles. There is a feature that the value of the ratio of the volume average particle size (D50) of the silicon-based negative electrode active material particles and/or tin-based negative electrode active material particles with respect to the volume average particle size (D50) of the carbonaceous negative electrode active material particles is 0.001 to 0.Type: ApplicationFiled: March 26, 2018Publication date: March 19, 2020Applicant: NISSAN MOTOR CO., LTD.Inventors: Yasuhiko OHSAWA, Yuki KUSACHI, Hajime SATOU, Hiroshi AKAMA, Hideaki HORIE, Naofumi SHOJI
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Publication number: 20200058923Abstract: To provide a negative electrode for a lithium ion battery having high energy density and excellent rapid charging characteristics. A negative electrode for a lithium ion battery, the negative electrode including a negative electrode current collector, a negative electrode active material layer formed on the surface of the negative electrode current collector, and a non-aqueous liquid electrolyte including an electrolyte containing lithium ions and a non-aqueous solvent, in which the negative electrode active material layer includes a negative electrode active material and voids, the voids are filled with the non-aqueous liquid electrolyte, and a proportion of the battery capacity based on a total amount of lithium ions in the non-aqueous liquid electrolyte existing in the negative electrode active material layer with respect to the battery capacity based on a total amount of the negative electrode active material is 3% to 17%.Type: ApplicationFiled: November 7, 2017Publication date: February 20, 2020Applicant: NISSAN MOTOR CO., LTD.Inventors: Kazuya MINAMI, Yusuke NAKASHIMA, Yasuhiko OHSAWA, Yuki KUSACHI, Hajime SATOU, Hiroshi AKAMA, Hideaki HORIE
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Publication number: 20200020938Abstract: To provide a negative electrode for a lithium ion battery which is excellent in energy density and cycle characteristics and has a small volume change at the time of charging. Provided is a negative electrode for a lithium ion battery comprising a negative electrode active material layer, in which the negative electrode active material layer is formed from a non-bound body of a mixture containing silicon and/or silicon compound particles and carbon-based negative electrode active material particles, a volume average particle size of the silicon and/or silicon compound particles is 0.01 to 10 ?m, a volume average particle size of the carbon-based negative electrode active material particles is 15 to 50 ?m, and a mass mixing ratio of the total of the silicon and silicon compound particles and the carbon-based negative electrode active material particles contained in the mixture is 5:95 to 45:55.Type: ApplicationFiled: December 19, 2017Publication date: January 16, 2020Applicant: NISSAN MOTOR CO., LTD.Inventors: Yusuke MIZUNO, Naofumi SHOJI, Yasuhiko OHSAWA, Yuki KUSACHI, Hajime SATOU, Hiroshi AKAMA, Hideaki HORIE
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Publication number: 20200020926Abstract: To provide a negative electrode for a non-aqueous electrolyte secondary battery that can be produced even without performing a heat treatment at a high temperature such as 2,000° C. or higher and can have the discharge capacity and the cycle characteristics (capacity retention) further increased. The negative electrode for a non-aqueous electrolyte secondary battery according to the invention has a configuration in which a negative electrode active material layer containing a negative electrode material and a binder is formed on the surface of a current collector. Further, the negative electrode material has a core portion including carbonaceous negative electrode active material particles; and a shell portion including a polyimide and silicon-based negative electrode active material particles and/or tin-based negative electrode active material particles.Type: ApplicationFiled: March 26, 2018Publication date: January 16, 2020Applicant: NISSAN MOTOR CO., LTD.Inventors: Yasuhiko OHSAWA, Yuki KUSACHI, Hajime SATOU, Hiroshi AKAMA, Hideaki HORIE, Hideki NISHIMURA
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Patent number: 10511004Abstract: A non-aqueous electrolyte secondary battery has a positive electrode having a positive electrode active material layer, a negative electrode having a negative electrode active material layer, and an electrolyte layer having an electrolyte solution containing a non-aqueous solvent. At least one of the positive electrode active material layer and the negative electrode active material layer contains an electrode material for a non-aqueous electrolyte secondary battery having a core part including an electrode active material and a shell part including a conductive material in a base material formed by a gel-forming polymer having a liquid absorption rate with respect to the electrolyte solution of 10 to 200%.Type: GrantFiled: January 26, 2015Date of Patent: December 17, 2019Assignee: Nissan Motor Co., Ltd.Inventors: Yuki Kusachi, Yasuhiko Ohsawa, Hiroshi Akama, Hideaki Horie, Yuta Murakami, Kenichi Kawakita, Yusuke Mizuno, Yasuhiro Tsudo, Yasuhiro Shindo
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Publication number: 20190355940Abstract: The battery pack has a laminated body in which unit cells are laminated one on another, a cell case having a first opening and containing the laminated body, and a first lid member to tightly close the first opening. The first opening is positioned to face, in connection with a unit cell laminated direction, a first face of the laminated body. The first lid member is configured to, if an internal pressure of the cell case is lower than atmospheric pressure, deform while keeping the tightly closing state, come into contact with the first face of the laminated body, and apply a pressure based on a differential pressure between atmospheric pressure and the internal pressure of the cell case to the contacting face.Type: ApplicationFiled: March 8, 2017Publication date: November 21, 2019Applicant: NISSAN MOTOR CO., LTD.Inventors: Hajime SATOU, Yasuhiko OHSAWA, Yuki KUSACHI, Hiroshi AKAMA, Hideaki HORIE, Yusuke MIZUNO, Yusuke EMORI, Takahiro IMAISHI
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Publication number: 20190348712Abstract: To provide a structure which allows production of an electrode, even if the film thickness of an electrode is increased; and a non-aqueous electrolyte secondary battery using the same.Type: ApplicationFiled: July 25, 2019Publication date: November 14, 2019Applicant: NISSAN MOTOR CO., LTD.Inventors: Yasuhiko OHSAWA, Yuki KUSACHI, Hiroshi AKAMA, Hideaki HORIE, Yusuke MIZUNO, Kenichi KAWAKITA, Yasuhiro Shindo, Yasuhiro TSUDO
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Publication number: 20190319254Abstract: To provide a negative electrode for a lithium ion battery in which a volume change of a silicon-based negative electrode active material due to charging and discharging is small, and a production method therefor. Provided is a method for producing a negative electrode for a lithium ion battery, the method including a step of forming a coating film on a current collector or a separator by using a slurry containing a negative electrode active material composition, which contains a silicon-based negative electrode active material and a carbon-based negative electrode active material, and a dispersion medium, in which the method further includes a step of doping the silicon-based negative electrode active material with lithium ions and a step of doping the carbon-based negative electrode active material with lithium ions before or after the step of forming the coating film and before assembling a lithium ion battery, and the method does not substantially include a step of drying the coating film.Type: ApplicationFiled: December 19, 2017Publication date: October 17, 2019Applicant: NISSAN MOTOR CO., LTD.Inventors: Kazuya TSUCHIDA, Yusuke NAKASHIMA, Yasuhiko OHSAWA, Yuki KUSACHI, Hajime SATOU, Hiroshi AKAMA, Hideaki HORIE
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Patent number: 10431851Abstract: To provide a structure which allows production of an electrode, even if the film thickness of an electrode is increased; and a non-aqueous electrolyte secondary battery using the same.Type: GrantFiled: December 25, 2015Date of Patent: October 1, 2019Assignee: NISSAN MOTOR CO., LTD.Inventors: Yasuhiko Ohsawa, Yuki Kusachi, Hiroshi Akama, Hideaki Horie, Yusuke Mizuno, Kenichi Kawakita, Yasuhiro Shindo, Yasuhiro Tsudo
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Publication number: 20190267610Abstract: To provide a positive electrode for a lithium ion battery having high energy density and being capable of rapid discharging. A positive electrode for a lithium ion battery, the positive electrode including a positive electrode current collector, a positive electrode active material layer formed on the surface of the positive electrode current collector, and a non-aqueous liquid electrolyte including an electrolyte containing lithium ions and a non-aqueous solvent, in which the positive electrode active material layer includes a positive electrode active material and voids, the voids are filled with the non-aqueous liquid electrolyte, and a proportion of the battery capacity based on a total amount of lithium ions in the non-aqueous liquid electrolyte existing in the positive electrode active material layer with respect to the battery capacity based on a total amount of the positive electrode active material is 3.5 to 15%.Type: ApplicationFiled: November 7, 2017Publication date: August 29, 2019Applicant: NISSAN MOTOR CO., LTD.Inventors: Kazuya MINAMI, Yusuke NAKASHIMA, Yasuhiko OHSAWA, Yuki KUSACHI, Hajime SATOU, Hiroshi AKAMA, Hideaki HORIE