Patents by Inventor Shingo Komura
Shingo Komura 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: 20240120619Abstract: A power storage module comprises a plurality of bipolar electrodes, an outermost positive electrode, an outermost negative electrode, a first sealing part, a second sealing part, an inner sealing part, a first insulating member, a second insulating member, and an inner insulating member. At a periphery of each positive electrode current-collecting foil, a positive-electrode-free portion is formed, and at a periphery of each negative electrode current-collecting foil, a negative-electrode-free portion is formed. The first insulating member includes a first outer insulating part, the second insulating member includes a second outer insulating part, and the inner insulating member includes an inner insulating part. Each of a thickness of the first outer insulating part and a thickness of the second outer insulating part is more than a thickness of the inner insulating part.Type: ApplicationFiled: September 22, 2023Publication date: April 11, 2024Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shingo KOMURA, Yusuke YAMASHITA
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Publication number: 20240072233Abstract: A method for producing an electrode member that configures an electrode body of an all-solid-state battery, including: a slurry preparation step for preparing a mixed material slurry that contains at least a binder, solid electrolyte particles, and a nonaqueous solvent with low polarity; a molding step for molding the mixed material slurry into a desired shape; and a drying step for obtaining a molded body by removing the nonaqueous solvent with low polarity from the mixed material slurry after the molding. Then, the temperature of the mixed material slurry is controlled so as not to cause re-crystallization of the binder, which has been dissolved in the nonaqueous solvent with low polarity, at least until the initiation of the molding step. Consequently, it is possible to stably provide an all-solid-state battery that has low battery resistance, while improving electrode member production efficiency by preventing gelation of a mixed material slurry.Type: ApplicationFiled: October 21, 2021Publication date: February 29, 2024Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, KUREHA CORPORATIONInventors: Shingo KOMURA, Yoshiyuki NAGASAWA, Mitsuyasu SAKUMA
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Patent number: 11673209Abstract: A manufacturing method and a manufacturing apparatus for a separator layer-coated electrode are provided capable of shortening the time required to cut out a separator layer-coated electrode with a laser beam. In a cutting process, a laser beam is irradiated to a laser irradiation target portion of a strip-shaped separator layer-coated electrode from a front-side separator layer side to cut a strip-shaped separator layer-coated electrode. Prior to the cutting process, a preheating process is conducted to preheat the front-side separator layer in the laser irradiation target portion.Type: GrantFiled: March 27, 2020Date of Patent: June 13, 2023Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masakazu Umehara, Takahiro Kuhara, Shingo Komura
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Publication number: 20230110690Abstract: In conventional arts, it is impossible to form a good solid-solid interface in cathode mixture layers of all-solid-state batteries, which significantly deteriorates resistance of the all-solid-state battery after the charge/discharge cycle, which is problematic. A cathode slurry is produced by a method including: a first step of dispersing a conductive additive constituted of carbon in a solvent to obtain a first slurry; a second step of dispersing a sulfide solid electrolyte in the first slurry to obtain a second slurry; and a third step of dispersing a cathode active material in the second slurry to obtain a third slurry, to be used to form a cathode mixture layer. This may suppress agglomeration of the cathode active material as using the conductive additive as a core, and may lower the proportion of agglomerate present in the cathode mixture layer.Type: ApplicationFiled: November 4, 2022Publication date: April 13, 2023Inventor: Shingo KOMURA
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Patent number: 11522175Abstract: In conventional arts, it is impossible to form a good solid-solid interface in cathode mixture layers of all-solid-state batteries, which significantly deteriorates resistance of the all-solid-state battery after the charge/discharge cycle, which is problematic. A cathode slurry is produced by a method including: a first step of dispersing a conductive additive constituted of carbon in a solvent to obtain a first slurry; a second step of dispersing a sulfide solid electrolyte in the first slurry to obtain a second slurry; and a third step of dispersing a cathode active material in the second slurry to obtain a third slurry, to be used to form a cathode mixture layer. This may suppress agglomeration of the cathode active material as using the conductive additive as a core, and may lower the proportion of agglomerate present in the cathode mixture layer.Type: GrantFiled: February 4, 2020Date of Patent: December 6, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Shingo Komura
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Publication number: 20220367881Abstract: A secondary battery electrode disclosed here is a positive electrode or a negative electrode of a secondary battery, and includes a rectangular sheet-like electrode current collector, and an electrode active material layer disposed on the electrode current collector. At least one end portion of the electrode current collector in a long-side direction is provide with an uncoated portion in which the electrode active material layer is not formed. The electrode active material layer has a length L1 of 300 mm or more in the long-side direction, and includes a flat surface portion having a substantially uniform average thickness t1 and a tilt portion in which the tilt portion having a thickness that continuously decreases toward the uncoated portion. A length L2 from a boundary between the electrode active material layer and the uncoated portion to a point P is 0.5 mm or more and 25 mm or less.Type: ApplicationFiled: May 6, 2022Publication date: November 17, 2022Inventor: Shingo KOMURA
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Patent number: 11462365Abstract: Provided is a positive electrode for lithium ion capacitor that allows increasing the capacity of a lithium ion capacitor. A method for producing a positive electrode for lithium ion capacitor disclosed herein includes a the steps of: giving a positive electrode mixture containing an activated carbon, a binder and a solvent, to a positive electrode collector; drying the positive electrode collector having the positive electrode mixture given thereto, to form a positive electrode mixture layer; and thermally treating the formed positive electrode mixture layer in an inert gas atmosphere or under reduced pressure, so that oxygen-containing functional groups present on the surface of the activated carbon detach from the surface of the activated carbon.Type: GrantFiled: July 23, 2019Date of Patent: October 4, 2022Assignee: TOYOTA JIDOSHA KABUSHIKT KAISHAInventor: Shingo Komura
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Publication number: 20210143434Abstract: An electrode active material layer satisfies relations represented by an expression (1) “2.2?X0?15.0” and an expression (2) “|(X5?X1)/X1|?25%”. X0 represents a ratio of a mass concentration of a first component (Ni, Co, Mn, Al, Fe, Ti, Si) to a mass concentration of a second component (S, P) in a cross section of the electrode active material layer. X1 represents a ratio of a mass concentration of the first component to a mass concentration of the second component in a region of the cross section closest to the electrode current collector; and X5 represents a ratio of a mass concentration of the first component to a mass concentration of the second component in a region of the cross section farthest from the electrode current collector.Type: ApplicationFiled: November 9, 2020Publication date: May 13, 2021Inventor: Shingo Komura
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Patent number: 10854872Abstract: The method for manufacturing an electrode for a lithium ion secondary cell proposed herein includes: a step of pattern-coating a binder liquid 21d on a current collector 12 and forming a binder coat layer 16, and a step of supplying granulated particles 32 onto the binder coat layer 16. The binder coat layer 16 is intermittently formed on the current collector 12 so that band coated portions 16a and band uncoated portions 16b are alternatingly adjacent to each other. The width t1 of the coated portions 16a, the width t2 of the uncoated portions 16b, and the average particle diameter R of the granulated particles 32 satisfy the following relationships: 0.53R?t1?10R; 0.66R?t2?10R; and 0.2?t1/t2?3.75.Type: GrantFiled: November 10, 2015Date of Patent: December 1, 2020Assignee: ZEON CORPORATIONInventors: Shingo Komura, Yuya Kitagawa, Yuji Shibata
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Publication number: 20200287208Abstract: In conventional arts, it is impossible to form a good solid-solid interface in cathode mixture layers of all-solid-state batteries, which significantly deteriorates resistance of the all-solid-state battery after the charge/discharge cycle, which is problematic. A cathode slurry is produced by a method including: a first step of dispersing a conductive additive constituted of carbon in a solvent to obtain a first slurry; a second step of dispersing a sulfide solid electrolyte in the first slurry to obtain a second slurry; and a third step of dispersing a cathode active material in the second slurry to obtain a third slurry, to be used to form a cathode mixture layer. This may suppress agglomeration of the cathode active material as using the conductive additive as a core, and may lower the proportion of agglomerate present in the cathode mixture layer.Type: ApplicationFiled: February 4, 2020Publication date: September 10, 2020Inventor: Shingo KOMURA
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Publication number: 20200223010Abstract: A manufacturing method and a manufacturing apparatus for a separator layer-coated electrode are provided capable of shortening the time required to cut out a separator layer-coated electrode with a laser beam. In a cutting process, a laser beam is irradiated to a laser irradiation target portion of a strip-shaped separator layer-coated electrode from a front-side separator layer side to cut a strip-shaped separator layer-coated electrode. Prior to the cutting process, a preheating process is conducted to preheat the front-side separator layer in the laser irradiation target portion.Type: ApplicationFiled: March 27, 2020Publication date: July 16, 2020Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masakazu UMEHARA, Takahiro KUHARA, Shingo KOMURA
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Patent number: 10665843Abstract: A separator-integrated electrode plate includes a current collecting sheet; an active material layer provided on the current collecting sheet, and a separator layer provided on the active material layer and configured to allow ions in electrolyte to pass through. The separator layer includes a polyimide layer provided on the active material layer and made of polyimide that has been melted in a solvent and then deposited as a film, and a polyolefin particle layer provided on the polyimide layer and made of polyolefin resin particles accumulated on the polyimide layer, the polyolefin resin particles having a melting point of 140° C. or less.Type: GrantFiled: August 14, 2017Date of Patent: May 26, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Shingo Komura
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Patent number: 10658652Abstract: A method of manufacturing a lithium-ion secondary battery electrode sheet proposed herein includes the step of pressing granulated particles (13a), wherein the ratio (t/D50) is less than 1, where D50 is the mean particle size of the granulated particles (13a) and t is the thickness of a layer (14) of active material particles (13a1) after pressing.Type: GrantFiled: August 21, 2015Date of Patent: May 19, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shingo Komura, Kunihito Arai, Taku Matsumura
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Patent number: 10646958Abstract: A manufacturing method and a manufacturing apparatus for a separator layer-coated electrode are provided capable of shortening the time required to cut out a separator layer-coated electrode with a laser beam. In a cutting process, a laser beam is irradiated to a laser irradiation target portion of a strip-shaped separator layer-coated electrode from a front-side separator layer side to cut a strip-shaped separator layer-coated electrode. Prior to the cutting process, a preheating process is conducted to preheat the front-side separator layer in the laser irradiation target portion.Type: GrantFiled: September 9, 2016Date of Patent: May 12, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masakazu Umehara, Takahiro Kuhara, Shingo Komura
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Publication number: 20200051754Abstract: Provided is a positive electrode for lithium ion capacitor that allows increasing the capacity of a lithium ion capacitor. A method for producing a positive electrode for lithium ion capacitor disclosed herein includes a the steps of: giving a positive electrode mixture containing an activated carbon, a binder and a solvent, to a positive electrode collector; drying the positive electrode collector having the positive electrode mixture given thereto, to form a positive electrode mixture layer; and thermally treating the formed positive electrode mixture layer in an inert gas atmosphere or under reduced pressure, so that oxygen-containing functional groups present on the surface of the activated carbon detach from the surface of the activated carbon.Type: ApplicationFiled: July 23, 2019Publication date: February 13, 2020Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Shingo KOMURA
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Patent number: 10249869Abstract: A method of producing an electrode body includes obtaining a state in which an electrode active material layer in a wet state which includes a first solid component containing electrode active material particles and a first liquid phase component and which includes the first solid component at a weight ratio in a range of 70 to 85% is present on the collecting foil, and applying an insulating particle paint which includes a second solid component containing insulating particles and a second liquid phase component and which includes the second solid component at a weight ratio in a range of 35 to 50% onto the electrode active material layer in the wet state, wherein a surface tension value of the first liquid phase component is in a range of 90 to 110% of a surface tension value of the second liquid phase component.Type: GrantFiled: May 23, 2017Date of Patent: April 2, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masakazu Umehara, Takahiro Kuhara, Shingo Komura
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Patent number: 10164232Abstract: An electrode body comprising a positive electrode mixture layer, a negative electrode mixture layer, and a thermoplastic-resin separator layer interposed therebetween is manufactured. A manufacturing method of the electrode body includes a preprocessing step of preprocessing a portion to be cut in a long-strip shaped integrated structure in which the separator layer as an accumulated layer of resin particles are interposed at least between the positive and negative electrode mixture layers such that the positive electrode mixture layer, the negative electrode mixture layer, and the separator layer are lowered their volume porosities to 10 to 20%, 10 to 20%, and 5% or less, respectively, and a cutting step of cutting the portion of the long-strip shaped integrated structure having been lowered the volume porosity by a cutting blade.Type: GrantFiled: September 20, 2016Date of Patent: December 25, 2018Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masakazu Umehara, Takahiro Kuhara, Shingo Komura
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Publication number: 20180097218Abstract: A separator-integrated electrode plate includes a current collecting sheet; an active material layer provided on the current collecting sheet, and a separator layer provided on the active material layer and configured to allow ions in electrolyte to pass through. The separator layer includes a polyimide layer provided on the active material layer and made of polyimide that has been melted in a solvent and then deposited as a film, and a polyolefin particle layer provided on the polyimide layer and made of polyolefin resin particles accumulated on the polyimide layer, the polyolefin resin particles having a melting point of 140° C. or less.Type: ApplicationFiled: August 14, 2017Publication date: April 5, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Shingo KOMURA
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Publication number: 20170346067Abstract: A method of producing an electrode body includes obtaining a state in which an electrode active material layer in a wet state which includes a first solid component containing electrode active material particles and a first liquid phase component and which includes the first solid component at a weight ratio in a range of 70 to 85% is present on the collecting foil, and applying an insulating particle paint which includes a second solid component containing insulating particles and a second liquid phase component and which includes the second solid component at a weight ratio in a range of 35 to 50% onto the electrode active material layer in the wet state, wherein a surface tension value of the first liquid phase component is in a range of 90 to 110% of a surface tension value of the second liquid phase component.Type: ApplicationFiled: May 23, 2017Publication date: November 30, 2017Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masakazu UMEHARA, Takahiro KUHARA, Shingo KOMURA
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Publication number: 20170279114Abstract: The method for manufacturing an electrode for a lithium ion secondary cell proposed herein includes: a step of pattern-coating a binder liquid 21d on a current collector 12 and forming a binder coat layer 16, and a step of supplying granulated particles 32 onto the binder coat layer 16. The binder coat layer 16 is intermittently formed on the current collector 12 so that band-shaped coated portions 16a and band-shaped uncoated portions 16b are alternatingly adjacent to each other. The width t1 of the coated portions 16a, the width t2 of the uncoated portions 16b, and the average particle diameter R of the granulated particles 32 satisfy the following relationships: 0.53R?t1?10R; 0.66R?t2?10R; and 0.2?t1/t2?3.75.Type: ApplicationFiled: November 10, 2015Publication date: September 28, 2017Applicant: ZEON CORPORATIONInventors: Shingo KOMURA, Yuya KITAGAWA, Yuji SHIBATA