Patents by Inventor Kengo HAGA
Kengo HAGA 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: 20230079146Abstract: A main object of the present disclosure is to provide a method for producing an electrode of which uncoated part can stretch while inhibiting breakage.Type: ApplicationFiled: August 4, 2022Publication date: March 16, 2023Inventors: Tomofumi HIRUKAWA, Kengo HAGA
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Publication number: 20220293911Abstract: A roll press apparatus forms a compressed strip-shaped electrode plate by roll-pressing a strip-shaped electrode plate including an active material portion and an active material absent portion and including a tensile-force-ratio adjustment mechanism adjusting a tensile force ratio of an upstream active material absent portion tensile force applied to an upstream side and a downstream active material absent portion tensile force applied to a downstream side of an inter-roll active material absent portion held in a non-compressed state between a pair of press rolls in an active material absent portion of the strip-shaped electrode plate.Type: ApplicationFiled: February 28, 2022Publication date: September 15, 2022Applicants: PRIME PLANET ENERGY & SOLUTIONS, INC., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kengo HAGA, Tomofumi HIRUKAWA, Kota NAKAMURA, Tomoya SUZUKI, Hideji NAITO, Yoshihide ENOMOTO
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Publication number: 20220293901Abstract: A roll press apparatus includes a first press roll and a second press roll. The first press roll includes a first contact part configured to contact an active material portion of a strip-shaped electrode sheet and a second contact part configured to contact an active-material absent portion of the strip-shaped electrode sheet. The second contact part has a large frictional-force generating form that causes a larger frictional force to be generated between the second contact part and the active-material absent portion of the strip-shaped electrode sheet than an imaginary frictional force which would be generated if the active-material absent portion of the strip-shaped electrode sheet were made to contact the first contact part.Type: ApplicationFiled: February 21, 2022Publication date: September 15, 2022Inventors: Kengo HAGA, Tomofumi HIRUKAWA, Kota NAKAMURA, Tomoya SUZUKI, Hideji NAITO, Yoshihide ENOMOTO
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Publication number: 20220285663Abstract: A roll press apparatus for producing a compressed strip-shaped electrode sheet from a strip-shaped electrode sheet including an active material portion and an active-material absent portion is provided with a pair of press rolls arranged in parallel with a roll gap and configured to roll-press the strip-shaped electrode sheet being conveyed in a longitudinal direction for compression to form a compressed active material layer, and an active-material-absent-portion stretching unit arranged upstream of the press rolls and configured to stretch the active-material absent portion of the strip-shaped electrode sheet in the longitudinal direction.Type: ApplicationFiled: February 1, 2022Publication date: September 8, 2022Inventors: Tomofumi HIRUKAWA, Tetsumasa MARUO, Kengo HAGA, Kota NAKAMURA
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Patent number: 11374256Abstract: A method for producing an all solid state battery in which an anode foil, an anode layer, a solid electrolyte layer, and a cathode layer are layered in this order, and an area of the solid electrolyte layer and the anode layer is larger than an area of the cathode layer is disclosed. The method includes a first pressing step of roll-pressing a first layered body so an adhesive force between the anode foil and the anode layer becomes 30 N/cm2 or more, to form a second layered body; a layered body forming step of forming a third layered body comprising the anode foil, the anode layer, the solid electrolyte layer, and the cathode layer, using the second layered body; and a second pressing step of roll-pressing the third layered body with a linear pressure of 1.0 t/cm or more to form a forth layered body.Type: GrantFiled: March 5, 2019Date of Patent: June 28, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kengo Haga, Hideki Asadachi
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Publication number: 20210265612Abstract: A device for producing an electrode laminate includes a roller configured to press an active material layer-attached current collector layer including a current collector layer and an active material layer disposed on at least one surface of the current collector layer. A diamond-like carbon film having an average roughness of 0.16 ?m or less is on a surface of the roller in contact with an active material layer or a press sheet is disposed between the roller and a surface of the active material layer, and a diamond-like carbon film having an average roughness of 0.16 ?m or less is on a surface of the press sheet in contact with the active material layer.Type: ApplicationFiled: April 23, 2021Publication date: August 26, 2021Inventors: Kengo HAGA, Hideki ASADACHI, Akiji HAYASHI, Hiroyuki INOUE
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Publication number: 20200313229Abstract: Provided is a method for producing an electrode body for an all-solid-state battery whereby cracks in the solid electrolyte layer can be suppressed even when the electrode body is pressed at a higher pressure, along with an electrode body produced by this method.Type: ApplicationFiled: November 20, 2018Publication date: October 1, 2020Inventors: Kengo HAGA, Hideki ASADACHI
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Patent number: 10658704Abstract: A method of manufacturing an electrode laminate, which includes an active material layer and a solid electrolyte layer formed on the active material layer, includes: an active material layer forming step of forming an active material layer; and a solid electrolyte layer forming step of forming a solid electrolyte layer on the active material layer by applying a solid electrolyte layer-forming slurry to the active material layer and drying the solid electrolyte layer-forming slurry. In this method, a surface roughness Ra value of the active material layer is 0.29 ?m to 0.98 ?m when calculated using a laser microscope.Type: GrantFiled: September 23, 2016Date of Patent: May 19, 2020Assignee: Toyota Jidosha Kabushiki KaishaInventors: Kengo Haga, Junichiro Nishino, Norihiro Ose, Hajime Hasegawa, Mitsutoshi Otaki, Hiroki Kubo, Keisuke Omori
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Patent number: 10651667Abstract: An all-solid-state battery system comprising an all-solid-state battery comprising a positive electrode active material layer, a solid electrolyte layer, and a negative electrode active material layer, and a control device configured to control a charge-discharge voltage during use of the all-solid-state battery. The negative electrode active material layer includes alloy negative electrode active material particles. The amorphization degree of the alloy negative electrode active material particles is in the range of 27.8% to 82.8% and a ratio Z/W is in the range of 0.32 to 0.60, where Z is a controlled discharge capacity of the all-solid-state battery, and W is a theoretical capacity of the alloy negative electrode active material particles × a total weight of the alloy negative electrode active material particles × the amorphization degree.Type: GrantFiled: July 16, 2018Date of Patent: May 12, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Mitsutoshi Otaki, Keisuke Omori, Norihiro Ose, Hajime Hasegawa, Kengo Haga
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Publication number: 20190280328Abstract: A method for producing an all solid state battery in which an anode foil, an anode layer, a solid electrolyte layer, and a cathode layer are layered in this order, and an area of the solid electrolyte layer and the anode layer is larger than an area of the cathode layer is disclosed. The method includes a first pressing step of roll-pressing a first layered body so an adhesive force between the anode foil and the anode layer becomes 30 N/cm2 or more, to form a second layered body; a layered body forming step of forming a third layered body comprising the anode foil, the anode layer, the solid electrolyte layer, and the cathode layer, using the second layered body; and a second pressing step of roll-pressing the third layered body with a linear pressure of 1.0 t/cm or more to form a forth layered body.Type: ApplicationFiled: March 5, 2019Publication date: September 12, 2019Applicant: Toyota Jidosha Kabushiki KaishaInventors: Kengo Haga, Hideki Asadachi
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Patent number: 10396394Abstract: A method for producing a sulfide all-solid-state battery with a high capacity retention rate, and a sulfide all-solid-state battery with a high capacity retention rate. The method for producing a sulfide all-solid-state battery may comprise forming a sulfide all-solid-state battery, initially charging the sulfide all-solid-state battery after the forming of the sulfide all-solid-state battery, and exposing the sulfide all-solid-state battery to an oxygen-containing gas atmosphere at at least any one of a time of the initially charging of the sulfide all-solid-state battery and a time after the initially charging of the sulfide all-solid-state battery.Type: GrantFiled: December 13, 2016Date of Patent: August 27, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hajime Hasegawa, Norihiro Ose, Kengo Haga, Mitsutoshi Otaki, Keisuke Omori, Takeshi Tojigamori
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Publication number: 20190165358Abstract: A device for producing an electrode laminate includes a roller configured to press an active material layer-attached current collector layer including a current collector layer and an active material layer disposed on at least one surface of the current collector layer. A diamond-like carbon film having an average roughness of 0.16 ?m or less is on a surface of the roller in contact with an active material layer or a press sheet is disposed between the roller and a surface of the active material layer, and a diamond-like carbon film having an average roughness of 0.16 ?m or less is on a surface of the press sheet in contact with the active material layer.Type: ApplicationFiled: October 2, 2018Publication date: May 30, 2019Inventors: Kengo HAGA, Hideki ASADACHI, Akiji HAYASHI, Hiroyuki INOUE
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Patent number: 10297874Abstract: A method of manufacturing an all-solid-state battery includes a lamination step of laminating a deactivated lithium-containing negative electrode active material layer containing deactivated lithium, a solid electrolyte layer for the all-solid-state battery, and a positive electrode active material layer for the all-solid-state battery such that the solid electrolyte layer for the all-solid-state battery is disposed between the deactivated lithium-containing negative electrode active material layer and the positive electrode active material layer for the all-solid-state battery.Type: GrantFiled: September 14, 2016Date of Patent: May 21, 2019Assignee: Toyota Jidosha Kabushiki KaishaInventors: Keisuke Omori, Hajime Hasegawa, Kengo Haga, Mitsutoshi Otaki, Norihiro Ose, Daichi Kosaka, Masato Hozumi
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Patent number: 10128675Abstract: An all-solid-state battery system comprising an all-solid-state battery comprising a positive electrode active material layer, a solid electrolyte layer, and a negative electrode active material layer, and a control device configured to control a charge-discharge voltage during use of the all-solid-state battery. The negative electrode active material layer includes alloy negative electrode active material particles. The amorphization degree of the alloy negative electrode active material particles is in the range of 27.8% to 82.8% and a ratio Z/W is in the range of 0.32 to 0.60, where Z is a controlled discharge capacity of the all-solid-state battery, and W is a theoretical capacity of the alloy negative electrode active material particles×a total weight of the alloy negative electrode active material particles×the amorphization degree.Type: GrantFiled: September 14, 2016Date of Patent: November 13, 2018Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Mitsutoshi Otaki, Keisuke Omori, Norihiro Ose, Hajime Hasegawa, Kengo Haga
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Publication number: 20180323631Abstract: An all-solid-state battery system comprising an all-solid-state battery comprising a positive electrode active material layer, a solid electrolyte layer, and a negative electrode active material layer, and a control device configured to control a charge-discharge voltage during use of the all-solid-state battery. The negative electrode active material layer includes alloy negative electrode active material particles. The amorphization degree of the alloy negative electrode active material particles is in the range of 27.8% to 82.8% and a ratio Z/W is in the range of 0.32 to 0.60, where Z is a controlled discharge capacity of the all-solid-state battery, and W is a theoretical capacity of the alloy negative electrode active material particles×a total weight of the alloy negative electrode active material particles×the amorphization degree.Type: ApplicationFiled: July 16, 2018Publication date: November 8, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Mitsutoshi OTAKI, Keisuke OMORI, Norihiro OSE, Hajime HASEGAWA, Kengo HAGA
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Publication number: 20180294531Abstract: A method of producing an all-solid battery includes pressing a laminate in a state where the laminate is insulated from a press machine. The laminate includes a negative electrode current collector layer, a negative electrode active material layer, a solid electrolyte layer, and a positive electrode active material layer. The negative electrode current collector layer includes copper, at least one of the negative electrode active material layer and the solid electrolyte layer includes a sulfide solid electrolyte, and the press machine is an anisotropic press machine.Type: ApplicationFiled: March 30, 2018Publication date: October 11, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kengo HAGA, Tomoya SUZUKI, Norihiro OSE, Akiji HAYASHI, Hiroyuki INOUE, Takayuki UCHIYAMA, Hajime HASEGAWA, Mitsutoshi OTAKI, Shigenori HAMA, Hiroyuki YAMAGUCHI, Dai KATO
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Patent number: 10079383Abstract: An all-solid battery that includes a negative electrode layer, a positive electrode layer, a solid electrolyte layer disposed between the positive electrode layer and the negative electrode layer, a negative electrode current collector connected to the negative electrode layer, and a positive electrode current collector connected to the positive electrode layer, wherein the negative electrode layer contains a sulfide solid electrolyte, the negative electrode current collector contains a metal that reacts with the sulfide solid electrolyte, a sulfur compound layer that contains a sulfur compound generated by a reaction of the sulfide solid electrolyte and the metal is present between the negative electrode layer and the negative electrode current collector, charge capacity when constant current charge was conducted up to 3.6 V at 0.3 C or more and 3.6 C or less in an initial charge after preparation of the all-solid battery is 50 mAh/g or more and 90 mAh/g or less.Type: GrantFiled: January 14, 2014Date of Patent: September 18, 2018Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kengo Haga, Norihiro Ose, Hajime Hasegawa
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Patent number: 9985314Abstract: A method is provided for preparing an all-solid battery that at least includes a negative electrode layer containing a negative electrode active material and a sulfide solid electrolyte, and a negative electrode current collector containing a metal that is in contact with the negative electrode layer and can react with the sulfide solid electrolyte, in which a sulfur compound generated by a reaction of the metal contained in the negative electrode current collector and the sulfide solid electrolyte contained in the negative electrode layer is not present in a contact portion of the negative electrode layer and the negative electrode current collector.Type: GrantFiled: January 14, 2014Date of Patent: May 29, 2018Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Norihiro Ose, Kengo Haga, Tomoharu Sasaoka
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Patent number: 9882234Abstract: An all-solid battery having stacked therein, in order, a positive electrode laminate, an intermediate solid electrolyte layer, and a negative electrode laminate is manufactured by a first pressing step (i) of applying pressure to the positive electrode laminate, a second pressing step (ii) of applying pressure to the negative electrode laminate, and a third pressing step (iii) of applying pressure to the positive electrode laminate, the intermediate solid electrolyte layer, and the negative electrode laminate.Type: GrantFiled: June 9, 2016Date of Patent: January 30, 2018Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Daichi Kosaka, Norihiro Ose, Kengo Haga, Tomoya Suzuki, Hajime Hasegawa, Keisuke Omori
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Patent number: 9786946Abstract: A solid-state battery comprising a stack including at least one unit cell including a positive electrode layer including a positive electrode active material, a negative electrode layer including a negative electrode active material, and a solid electrolyte layer laminated between the positive and negative electrode layers, and an outer covering accommodating the stack, wherein the solid-state battery further including a pressure receiving member provided on at least a part of a periphery of the outer covering, and wherein the pressure receiving member has a thickness of less than a total thickness of the stack and the outer covering in a stacking direction of the unit cell.Type: GrantFiled: March 18, 2015Date of Patent: October 10, 2017Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tomoharu Sasaoka, Norihiro Ose, Hajime Hasegawa, Kazuhito Kato, Kengo Haga, Daichi Kosaka