Patents by Inventor Yusuke OKUHATA
Yusuke OKUHATA 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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Patent number: 11682803Abstract: A sulfide all-solid-state battery which is capable of absorbing heat by a heat absorbing layer at abnormal heat generation and maintaining capacity of a battery at a high level for a long time use is provided. The sulfide all-solid-state battery contains at least one unit cell, at least one heat absorbing layer, a battery case which accommodates the unit cell and the heat absorbing layer, the unit cell contains sulfide solid electrolyte, the heat absorbing layer contains at least one organic heat absorbing material selected from the group consisting of sugar alcohols and hydrocarbons, and the heat absorbing layer does not contain an inorganic hydrate.Type: GrantFiled: October 18, 2017Date of Patent: June 20, 2023Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hajime Hasegawa, Yuki Matsushita, Yusuke Okuhata, Mitsuru Tateishi
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Patent number: 11404685Abstract: Copper reacts with a sulfide solid electrolyte to generate copper sulfide when an anode current collector layer made from copper, and an anode mixture layer containing the sulfide solid electrolyte are used to compose an anode, and the resistance of the interface between the anode current collector layer and the anode mixture layer increases. To alloy an anode current collector layer to lower the reactivity to a sulfide solid electrolyte, specifically, an anode includes: an anode mixture layer; and an anode current collector layer that is in contact with the anode mixture layer, wherein the anode mixture layer contains an anode active material and a sulfide solid electrolyte, and at least a surface of the anode current collector layer is made from material that contains an alloy of copper and metal of a higher ionization tendency than copper, the surface being in contact with the anode mixture layer.Type: GrantFiled: March 15, 2019Date of Patent: August 2, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Mitsuru Tateishi, Yusuke Okuhata, Hajime Hasegawa, Hirokazu Kawaoka, Hideaki Miyake
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Patent number: 11302953Abstract: A main object of the present disclosure is to provide a stacked battery in which an unevenness of short circuit resistance among a plurality of cells is suppressed. The present disclosure achieves the object by providing a stacked battery comprising: a plurality of cells in a thickness direction, wherein the plurality of cells are electrically connected in parallel; each of the plurality of cells includes a cathode current collector, a cathode active material layer, a solid electrolyte layer, an anode active material layer, and an anode current collector, in this order; the stacked battery includes a surface-side cell that is located on a surface side of the stacked battery, and a center-side cell that is located on a center side rather than the surface-side cell; and a contact resistance between the cathode current collector and the anode current collector in the surface-side cell is more than a contact resistance between the cathode current collector and the anode current collector in the center-side cell.Type: GrantFiled: April 13, 2018Date of Patent: April 12, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hajime Hasegawa, Yuki Matsushita, Hideaki Nishimura, Yusuke Okuhata, Norihiro Ose, Mitsuru Tateishi, Shigetaka Nagamatsu, Takayuki Uchiyama, Shigenori Hama, Dai Kato, Naohiro Mashimo, Hideyo Ebisuzaki, Ayano Kobayashi, Hisataka Fujimaki
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Patent number: 11075409Abstract: A main object of the present disclosure is to provide a stacked battery in which the unevenness of short circuit resistance among a plurality of cells is suppressed.Type: GrantFiled: April 13, 2018Date of Patent: July 27, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hajime Hasegawa, Yuki Matsushita, Hideaki Nishimura, Yusuke Okuhata, Norihiro Ose, Mitsuru Tateishi, Shigetaka Nagamatsu, Takayuki Uchiyama, Shigenori Hama, Dai Kato, Naohiro Mashimo, Hideyo Ebisuzaki, Ayano Kobayashi, Hisataka Fujimaki
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Patent number: 11011810Abstract: Disclosed is a stacked battery that can flow a larger rounding current in a short-circuit current shunt part than in an electric element when a short circuit occurs in the short-circuit current shunt part and the electric element in nailing, the stacked battery in which an electrical resistance of a current collector tab of the short-circuit current shunt part is smaller than an electrical resistance of a current collector tab of the electric element.Type: GrantFiled: April 13, 2018Date of Patent: May 18, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hajime Hasegawa, Norihiro Ose, Shigenori Hama, Hideaki Nishimura, Yuki Matsushita, Yusuke Okuhata, Mitsuru Tateishi, Hideyo Ebisuzaki
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Patent number: 10910677Abstract: An objective of the present disclosure is to provide a stacked battery that suppresses sneak current caused by an unevenness of a short circuit resistance among a plurality of cells. The present disclosure provides a stacked battery comprising: a plurality of cells in a thickness direction, wherein the plurality of cells are electrically connected in parallel; the stacked battery includes a surface-side cell that is located on a surface side of the stacked battery, and a center-side cell that is located on a center side rather than the surface-side cell; wherein a resistance of the cathode current collecting tab in the surface-side cell is more than a resistance of the cathode current collecting tab in the center-side cell; or a resistance of the anode current collecting tab in the surface-side cell is more than a resistance of the anode current collecting tab in the center-side cell.Type: GrantFiled: April 13, 2018Date of Patent: February 2, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hajime Hasegawa, Yuki Matsushita, Hideaki Nishimura, Yusuke Okuhata, Norihiro Ose, Mitsuru Tateishi, Shigetaka Nagamatsu, Takayuki Uchiyama, Shigenori Hama, Dai Kato, Naohiro Mashimo, Hideyo Ebisuzaki, Ayano Kobayashi, Hisataka Fujimaki
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Patent number: 10700338Abstract: Disclosed is an all-solid-state battery that makes it possible for a larger rounding current flow into a short-circuit current shunt part than to each electric element when the short-circuit current shunt part and the electric elements short-circuit in nail penetration testing.Type: GrantFiled: March 19, 2018Date of Patent: June 30, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hajime Hasegawa, Yuki Matsushita, Mitsuru Tateishi, Hideyo Ebisuzaki, Hideaki Nishimura, Yusuke Okuhata, Shigenori Hama, Norihiro Ose
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Patent number: 10665850Abstract: Disclosed is a stacked battery including at least one short-circuit current shunt part and electric elements, wherein: the shunt part includes first and second current collector layers, and an insulating layer provided between the first and second current collector layers, all of these layers being stacked; each power generation element includes a cathode current collector layer, a cathode material layer, an electrolyte layer, an anode material layer, and an anode current collector layer all of these layers being stacked; the first current collector layer is electrically connected to the cathode current collector layer and the second current collector layer to the anode current collector layer; the electric elements are electrically connected in parallel; and the shunt part next to the electric elements includes a PPTC layer between the first current collector layer and the insulating layer and/or between the second current collector layer and the insulating layer.Type: GrantFiled: March 30, 2018Date of Patent: May 26, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hajime Hasegawa, Yuki Matsushita, Mitsuru Tateishi, Hideyo Ebisuzaki, Hideaki Nishimura, Yusuke Okuhata, Shigenori Hama, Norihiro Ose
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Patent number: 10651456Abstract: In an all-solid-state battery including at least one short-circuit current shunt part and at least one electric element which are stacked, when the battery is constrained, cracking etc. of the adhesive in the short-circuit current shunt pail is prevented.Type: GrantFiled: March 26, 2018Date of Patent: May 12, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hajime Hasegawa, Yuki Matsushita, Mitsuru Tateishi, Hideaki Nishimura, Hideyo Ebisuzaki, Yusuke Okuhata, Norihiro Ose, Shigenori Hama
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Patent number: 10559845Abstract: A main object of the present disclosure is to provide a stacked battery in which an unevenness of short circuit resistance among a plurality of cells is suppressed.Type: GrantFiled: April 13, 2018Date of Patent: February 11, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hajime Hasegawa, Yuki Matsushita, Hideaki Nishimura, Yusuke Okuhata, Norihiro Ose, Mitsuru Tateishi, Shigetaka Nagamatsu, Takayuki Uchiyama, Shigenori Hama, Dai Kato, Naohiro Mashimo, Hideyo Ebisuzaki, Ayano Kobayashi, Hisataka Fujimaki
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Publication number: 20190305294Abstract: Copper reacts with a sulfide solid electrolyte to generate copper sulfide when an anode current collector layer made from copper, and an anode mixture layer containing the sulfide solid electrolyte are used to compose an anode, and the resistance of the interface between the anode current collector layer and the anode mixture layer increases. To alloy an anode current collector layer to lower the reactivity to a sulfide solid electrolyte, specifically, an anode includes: an anode mixture layer; and an anode current collector layer that is in contact with the anode mixture layer, wherein the anode mixture layer contains an anode active material and a sulfide solid electrolyte, and at least a surface of the anode current collector layer is made from material that contains an alloy of copper and metal of a higher ionization tendency than copper, the surface being in contact with the anode mixture layer.Type: ApplicationFiled: March 15, 2019Publication date: October 3, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Mitsuru TATEISHI, Yusuke OKUHATA, Hajime HASEGAWA, Hirokazu KAWAOKA, Hideaki MIYAKE
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Publication number: 20180316065Abstract: A main object of the present disclosure is to provide a stacked battery in which sneak current caused by an unevenness of a short circuit resistance among a plurality of cells, is suppressed.Type: ApplicationFiled: April 13, 2018Publication date: November 1, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hajime HASEGAWA, Yuki MATSUSHITA, Hideaki NISHIMURA, Yusuke OKUHATA, Norihiro OSE, Mitsuru TATEISHI, Shigetaka NAGAMATSU, Takayuki UCHIYAMA, Shigenori HAMA, Dai KATO, Naohiro MASHIMO, Hideyo EBISUZAKI, Ayano KOBAYASHI, Hisataka FUJIMAKI
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Publication number: 20180315984Abstract: Disclosed is a stacked battery that can flow a larger rounding current in a short-circuit current shunt part than in an electric element when a short circuit occurs in the short-circuit current shunt part and the electric element in nailing, the stacked battery in which an electrical resistance of a current collector tab of the short-circuit current shunt part is smaller than an electrical resistance of a current collector tab of the electric element.Type: ApplicationFiled: April 13, 2018Publication date: November 1, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hajime HASEGAWA, Norihiro OSE, Shigenori HAMA, Hideaki NISHIMURA, Yuki MATSUSHITA, Yusuke OKUHATA, Mitsuru TATEISHI, Hideyo EBISUZAKI
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Publication number: 20180316048Abstract: A main object of the present disclosure is to provide a stacked battery in which an unevenness of short circuit resistance among a plurality of cells is suppressed.Type: ApplicationFiled: April 13, 2018Publication date: November 1, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hajime HASEGAWA, Yuki MATSUSHITA, Hideaki NISHIMURA, Yusuke OKUHATA, Norihiro OSE, Mitsuru TATEISHI, Shigetaka NAGAMATSU, Takayuki UCHIYAMA, Shigenori HAMA, Dai KATO, Naohiro MASHIMO, Hideyo EBISUZAKI, Ayano KOBAYASHI, Hisataka FUJIMAKI
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Publication number: 20180316066Abstract: A main object of the present disclosure is to provide a stacked battery in which the unevenness of short circuit resistance among a plurality of cells is suppressed.Type: ApplicationFiled: April 13, 2018Publication date: November 1, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hajime HASEGAWA, Yuki MATSUSHITA, Hideaki NISHIMURA, Yusuke OKUHATA, Norihiro OSE, Mitsuru TATEISHI, Shigetaka NAGAMATSU, Takayuki UCHIYAMA, Shigenori HAMA, Dai KATO, Naohiro MASHIMO, Hideyo EBISUZAKI, Ayano KOBAYASHI, Hisataka FUJIMAKI
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Publication number: 20180316049Abstract: A main object of the present disclosure is to provide a stacked battery in which an unevenness of short circuit resistance among a plurality of cells is suppressed. The present disclosure achieves the object by providing a stacked battery comprising: a plurality of cells in a thickness direction, wherein the plurality of cells are electrically connected in parallel; each of the plurality of cells includes a cathode current collector, a cathode active material layer, a solid electrolyte layer, an anode active material layer, and an anode current collector, in this order; the stacked battery includes a surface-side cell that is located on a surface side of the stacked battery, and a center-side cell that is located on a center side rather than the surface-side cell; and a contact resistance between the cathode current collector and the anode current collector in the surface-side cell is more than a contact resistance between the cathode current collector and the anode current collector in the center-side cell.Type: ApplicationFiled: April 13, 2018Publication date: November 1, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hajime HASEGAWA, Yuki MATSUSHITA, Hideaki NISHIMURA, Yusuke OKUHATA, Norihiro OSE, Mitsuru TATEISHI, Shigetaka NAGAMATSU, Takayuki UCHIYAMA, Shigenori HAMA, Dai KATO, Naohiro MASHIMO, Hideyo EBISUZAKI, Ayano KOBAYASHI, Hisataka FUJIMAKI
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Publication number: 20180294468Abstract: Disclosed is an all-solid-state battery that makes it possible for a larger rounding current flow into a short-circuit current shunt part than to each electric element when the short-circuit current shunt part and the electric elements short-circuit in nail penetration testing.Type: ApplicationFiled: March 19, 2018Publication date: October 11, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hajime HASEGAWA, Yuki MATSUSHITA, Mitsuru TATEISHI, Hideyo EBISUZAKI, Hideaki NISHIMURA, Yusuke OKUHATA, Shigenori HAMA, Norihiro OSE
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Publication number: 20180294471Abstract: Disclosed is a stacked battery including at least one short-circuit current shunt part and electric elements, wherein: the shunt part includes first and second current collector layers, and an insulating layer provided between the first and second current collector layers, all of these layers being stacked; each power generation element includes a cathode current collector layer, a cathode material layer, an electrolyte layer, an anode material layer, and an anode current collector layer all of these layers being stacked; the first current collector layer is electrically connected to the cathode current collector layer and the second current collector layer to the anode current collector layer; the electric elements are electrically connected in parallel; and the shunt part next to the electric elements includes a PPTC layer between the first current collector layer and the insulating layer and/or between the second current collector layer and the insulating layer.Type: ApplicationFiled: March 30, 2018Publication date: October 11, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hajime HASEGAWA, Yuki MATSUSHITA, Mitsuru TATEISHI, Hideyo EBISUZAKI, Hideaki NISHIMURA, Yusuke OKUHATA, Shigenori HAMA, Norihiro OSE
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Publication number: 20180294469Abstract: In an all-solid-state battery including at least one short-circuit current shunt part and at least one electric element which are stacked, when the battery is constrained, cracking etc. of the adhesive in the short-circuit current shunt pail is prevented.Type: ApplicationFiled: March 26, 2018Publication date: October 11, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hajime HASEGAWA, Yuki MATSUSHITA, Mitsuru TATEISHI, Hideaki NISHIMURA, Hideyo EBISUZAKI, Yusuke OKUHATA, Norihiro OSE, Shigenori HAMA
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Publication number: 20180294470Abstract: A short-circuit current shunt part does not cause any short circuit during normal battery use, causes stable short circuits in nail penetration, and suppresses sudden temperature rise after nail penetration. A stacked battery includes at least one short-circuit current shunt part including first and second current collector layers, and an insulating layer between the first and second current collector layers, and electric elements each including a cathode current collector layer, a cathode material layer, an electrolyte layer, an anode material layer, and an anode current collector layer, with all layers being stacked. The first current collector layer is electrically connected with the cathode current collector layer, the second current collector layer is electrically connected with the anode current collector layer, the electric elements are electrically connected to each other in parallel, and the short-circuit current shunt part insulating layer formed of a thermosetting resin sheet.Type: ApplicationFiled: March 27, 2018Publication date: October 11, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hajime HASEGAWA, Yuki MATSUSHITA, Mitsuru TATEISHI, Hideyo EBISUZAKI, Hideaki NISHIMURA, Yusuke OKUHATA, Shigenori HAMA, Norihiro OSE