Patents by Inventor Kenji Motoi
Kenji Motoi 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: 11665982Abstract: A superconducting wire includes a substrate and a superconducting material layer. The substrate includes a first main surface and a second main surface opposite to the first main surface. The superconducting material layer is disposed on the first main surface. Along at least a part of the superconducting wire in a direction in which the superconducting wire extends, the superconducting material layer is disposed to cover a side surface of the substrate in a width direction of the substrate and cover at least a part of the second main surface. A thickness of the superconducting material layer located on the first main surface varies along the width direction. A maximum thickness of the superconducting material layer located on the second main surface is smaller than a maximum thickness of the superconducting material layer located on the first main surface.Type: GrantFiled: November 11, 2015Date of Patent: May 30, 2023Assignee: Sumitomo Electric Industries, Ltd.Inventors: Takashi Yamaguchi, Tatsuoki Nagaishi, Masaya Konishi, Takeshi Yamana, Kenji Motoi
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Patent number: 11631867Abstract: A bipolar plate is disposed between a positive electrode and a negative electrode of a redox flow battery. The bipolar plate has, in a surface of the bipolar plate facing at least one of the positive electrode and the negative electrode, a plurality of grooves through which an electrolyte flows and a ridge positioned between the adjacent grooves. The bipolar plate includes rough surfaces which are disposed in at least parts of groove inner surfaces defining the respective grooves and surface roughness of which represented by arithmetic mean roughness Ra is 0.1 ?m or larger.Type: GrantFiled: January 19, 2017Date of Patent: April 18, 2023Assignee: Sumitomo Electric Industries, Ltd.Inventors: Hayato Fujita, Kenji Motoi
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Patent number: 11527770Abstract: A cell stack including; a stacked body including a plurality of cell frames each having a bipolar plate whose outer periphery is supported by a frame member; and a pair of end plates that tighten the stacked body from both sides of a stacking direction thereof, wherein an area S [cm2] of each cell frame as viewed from the stacking direction of the stacked body and a length W [mm] in the stacking direction of the stacked body satisfies a relationship 0.05?W/S?0.9.Type: GrantFiled: February 27, 2018Date of Patent: December 13, 2022Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Hayato Fujita, Kenji Motoi, Takashi Kanno, Takeshi Yamana
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Patent number: 11522209Abstract: A battery according to an embodiment of the present invention includes: a plurality of tanks (2) storing electrolyte containing ions of which valence is changed; a cell (1) configured to cause oxidation-reduction of the electrolyte so as to be charged or discharged; a pipe (3) connecting the plurality of tanks and the cell; and a pump (4) configured to circulate the electrolyte between the plurality of tanks and the cell through the pipe. The battery according to an embodiment of the present invention includes a container (5) housing the plurality of tanks (2), the cell (1), the pipe (3), and the pump (4). The container has a bottom (51), a side (52), and a top (53). Accordingly, the battery in an embodiment of the present invention can be installed easily and its installation area can be reduced.Type: GrantFiled: April 21, 2016Date of Patent: December 6, 2022Assignee: Sumitomo Electric Industries, Ltd.Inventors: Atsuo Ikeuchi, Takeshi Yamana, Kenji Motoi
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Publication number: 20200403262Abstract: A cell stack including; a stacked body including a plurality of cell frames each having a bipolar plate whose outer periphery is supported by a frame member; and a pair of end plates that tighten the stacked body from both sides of a stacking direction thereof, wherein an area S [cm2] of each cell frame as viewed from the stacking direction of the stacked body and a length W [mm] in the stacking direction of the stacked body satisfies a relationship 0.05?W/S?0.9.Type: ApplicationFiled: February 27, 2018Publication date: December 24, 2020Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Hayato FUJITA, Kenji MOTOI, Takashi KANNO, Takeshi YAMANA
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Publication number: 20190379062Abstract: A bipolar plate is disposed between a positive electrode and a negative electrode of a redox flow battery. The bipolar plate has, in a surface of the bipolar plate facing at least one of the positive electrode and the negative electrode, a plurality of grooves through which an electrolyte flows and a ridge positioned between the adjacent grooves. The bipolar plate includes rough surfaces which are disposed in at least parts of groove inner surfaces defining the respective grooves and surface roughness of which represented by arithmetic mean roughness Ra is 0.1 ?m or larger.Type: ApplicationFiled: January 19, 2017Publication date: December 12, 2019Applicant: Sumitomo Electric Industries, Ltd.Inventors: Hayato FUJITA, Kenji MOTOI
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Patent number: 10431843Abstract: A frame body for a cell frame of a redox flow battery, the frame body including an outer peripheral portion, the outer peripheral portion including a thin region whose thickness gradually decreases in a direction from the center of the frame body toward the outer periphery of the frame body.Type: GrantFiled: October 5, 2016Date of Patent: October 1, 2019Assignee: Sumitomo Electric Industries, Ltd.Inventors: Hideyuki Yamaguchi, Takashi Kanno, Kenji Motoi, Takeshi Yamana
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Publication number: 20190221863Abstract: A bipolar plate in which an electrode of a redox flow battery is disposed. In a section perpendicular to a flat surface of the bipolar plate, a radius of curvature of a corner portion of an outer peripheral portion is from 0.1 to 4.0 mm.Type: ApplicationFiled: January 18, 2017Publication date: July 18, 2019Applicants: Sumitomo Electric Industries, Ltd., Sumitomo Electric Industries, Ltd.Inventors: Hideyuki Yamaguchi, Kenji Motoi
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Patent number: 10305121Abstract: There is provided a frame body used for a cell of a redox flow battery, that can improve heat dissipation of an electrolyte in a slit and can suppress rise of the temperature of the electrolyte. It is a frame body used for a cell of a redox flow battery, comprising: an opening formed inside the frame body; a manifold allowing an electrolyte to pass therethrough; and a slit which connects the manifold and the opening and forms a channel of the electrolyte between the manifold and the opening, the slit having a pair of sidewalls facing each other in a cross section orthogonal to a direction in which the electrolyte flows, the slit having, at at least a portion thereof in the slit's depthwise direction, a width narrowing portion allowing the sidewalls to have a spacing narrowed in the depthwise direction.Type: GrantFiled: August 20, 2015Date of Patent: May 28, 2019Assignee: Sumitomo Electric Industries, Ltd.Inventors: Takashi Kanno, Takeshi Yamana, Kenji Motoi
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Patent number: 10305122Abstract: There is provided a frame body used for a cell of a redox flow battery, that can improve heat dissipation of an electrolyte in a slit and can suppress rise of the temperature of the electrolyte. It is a frame body used for a cell of a redox flow battery, comprising: an opening formed inside the frame body; a manifold allowing an electrolyte to pass therethrough; and a slit which connects the manifold and the opening and forms a channel of the electrolyte between the manifold and the opening, the slit having a pair of sidewalls facing each other in a cross section orthogonal to a direction in which the electrolyte flows, the slit having, at at least a portion thereof in the slit's depthwise direction, a width narrowing portion allowing the sidewalls to have a spacing narrowed in the depthwise direction.Type: GrantFiled: June 7, 2017Date of Patent: May 28, 2019Assignee: Sumitomo Electric Industries, Ltd.Inventors: Takashi Kanno, Takeshi Yamana, Kenji Motoi
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Publication number: 20190140301Abstract: A battery according to an embodiment of the present invention includes: a plurality of tanks (2) storing electrolyte containing ions of which valence is changed; a cell (1) configured to cause oxidation-reduction of the electrolyte so as to be charged or discharged; a pipe (3) connecting the plurality of tanks and the cell; and a pump (4) configured to circulate the electrolyte between the plurality of tanks and the cell through the pipe. The battery according to an embodiment of the present invention includes a container (5) housing the plurality of tanks (2), the cell (1), the pipe (3), and the pump (4). The container has a bottom (51), a side (52), and a top (53). Accordingly, the battery in an embodiment of the present invention can be installed easily and its installation area can be reduced.Type: ApplicationFiled: April 21, 2016Publication date: May 9, 2019Inventors: Atsuo Ikeuchi, Takeshi Yamana, Kenji Motoi
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Patent number: 10263263Abstract: There is provided a frame body used for a cell of a redox flow battery, that can improve heat dissipation of an electrolyte in a slit and can suppress rise of the temperature of the electrolyte. It is a frame body used for a cell of a redox flow battery, comprising: an opening formed inside the frame body; a manifold allowing an electrolyte to pass therethrough; and a slit which connects the manifold and the opening and forms a channel of the electrolyte between the manifold and the opening, the slit having a pair of sidewalls facing each other in a cross section orthogonal to a direction in which the electrolyte flows, the slit having, at at least a portion thereof in the slit's depthwise direction, a width narrowing portion allowing the sidewalls to have a spacing narrowed in the depthwise direction.Type: GrantFiled: August 20, 2015Date of Patent: April 16, 2019Assignee: Sumitomo Electric Industries, Ltd.Inventors: Takashi Kanno, Takeshi Yamana, Kenji Motoi
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Patent number: 10224563Abstract: A frame body that is a part of a flat cell frame for a cell stack of a redox flow battery, and that supports, on an outer peripheral side of a bipolar plate of the cell frame, the bipolar plate, the frame body including a frame-facing surface that is to face, when a plurality of the cell frames are stacked, a frame body of another cell frame that is adjacent to the cell frame in a stacking direction, wherein the frame-facing surface has a surface roughness Ra of 0.03 ?m or more and 3.2 ?m or less.Type: GrantFiled: October 5, 2016Date of Patent: March 5, 2019Assignee: Sumitomo Electric Industries, Ltd.Inventors: Hayato Fujita, Takashi Kanno, Kenji Motoi, Takeshi Yamana
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Publication number: 20180375115Abstract: A bipolar plate disposed between a positive electrode and a negative electrode of a redox flow battery has, in a surface of the bipolar plate facing at least one of the positive electrode and the negative electrode, at least one groove through which an electrolyte flows. The groove has a pair of sidewalls facing each other in a cross section orthogonal to a direction in which the electrolyte flows. The groove has a narrow portion in which a distance between the sidewalls decreases in a depth direction of the groove, the narrow portion being provided in at least a part of the groove in the depth direction.Type: ApplicationFiled: October 12, 2016Publication date: December 27, 2018Inventors: Takashi Kanno, Kenji Motoi
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Publication number: 20180337323Abstract: A superconducting wire includes a substrate and a superconducting material layer. The substrate includes a first main surface and a second main surface opposite to the first main surface. The superconducting material layer is disposed on the first main surface. Along at least a part of the superconducting wire in a direction in which the superconducting wire extends, the superconducting material layer is disposed to cover a side surface of the substrate in a width direction of the substrate and cover at least a part of the second main surface. A thickness of the superconducting material layer located on the first main surface varies along the width direction. A maximum thickness of the superconducting material layer located on the second main surface is smaller than a maximum thickness of the superconducting material layer located on the first main surface.Type: ApplicationFiled: November 11, 2015Publication date: November 22, 2018Applicant: Sumitomo Electric Industries, Ltd.Inventors: Takashi YAMAGUCHI, Tatsuoki NAGAISHI, Masaya KONISHI, Takeshi YAMANA, Kenji MOTOI
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Publication number: 20180294486Abstract: An introduction channel and a discharge channel are provided in each of a surface of a cell frame that faces a positive electrode and a surface of the cell frame that faces a negative electrode. The introduction channel includes an introduction rectifying groove and a plurality of introduction branch grooves. The discharge channel includes a discharge rectifying groove and a plurality of discharge branch grooves. The introduction branch grooves extend toward the discharge rectifying groove and the discharge branch grooves extend toward the introduction rectifying groove. Separation distances X between the introduction rectifying groove and the discharge branch grooves and separation distances Y between the discharge rectifying groove and the introduction branch grooves are in a range from 1 mm to 30 mm.Type: ApplicationFiled: December 22, 2016Publication date: October 11, 2018Inventors: Masahiro Kuwabara, Kenji Motoi
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Publication number: 20180248216Abstract: A frame body for a cell frame of a redox flow battery, the frame body including an outer peripheral portion, the outer peripheral portion including a thin region whose thickness gradually decreases in a direction from the center of the frame body toward the outer periphery of the frame body.Type: ApplicationFiled: October 5, 2016Publication date: August 30, 2018Inventors: Hideyuki Yamaguchi, Takashi Kanno, Kenji Motoi, Takeshi Yamana
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Publication number: 20180248215Abstract: A frame body that is a part of a flat cell frame for a cell stack of a redox flow battery, and that supports, on an outer peripheral side of a bipolar plate of the cell frame, the bipolar plate, the frame body including a frame-facing surface that is to face, when a plurality of the cell frames are stacked, a frame body of another cell frame that is adjacent to the cell frame in a stacking direction, wherein the frame-facing surface has a surface roughness Ra of 0.03 ?m or more and 3.2 ?m or less.Type: ApplicationFiled: October 5, 2016Publication date: August 30, 2018Inventors: Hayato Fujita, Takashi Kanno, Kenji Motoi, Takeshi Yamana
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Patent number: 9947944Abstract: There is provided a frame body used for a cell of a redox flow battery, that can improve heat dissipation of an electrolyte in a slit while reducing a shunt current loss through the electrolyte, and can also suppress strain caused at a slit formation portion. It is a frame body used for a cell of a redox flow battery, comprising: an opening formed inside the frame body; a manifold allowing an electrolyte to pass therethrough; and a slit which connects the manifold and the opening and forms a channel of the electrolyte between the manifold and the opening, the slit having at least one bent portion, the at least one bent portion having a radius of curvature of 2.0 mm or more and 200 mm or less.Type: GrantFiled: August 21, 2015Date of Patent: April 17, 2018Assignee: Sumitomo Electric Industries, Ltd.Inventors: Takashi Kanno, Takeshi Yamana, Kenji Motoi
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Publication number: 20170271691Abstract: There is provided a frame body used for a cell of a redox flow battery, that can improve heat dissipation of an electrolyte in a slit and can suppress rise of the temperature of the electrolyte. It is a frame body used for a cell of a redox flow battery, comprising: an opening formed inside the frame body; a manifold allowing an electrolyte to pass therethrough; and a slit which connects the manifold and the opening and forms a channel of the electrolyte between the manifold and the opening, the slit having a pair of sidewalls facing each other in a cross section orthogonal to a direction in which the electrolyte flows, the slit having, at at least a portion thereof in the slit's depthwise direction, a width narrowing portion allowing the sidewalls to have a spacing narrowed in the depthwise direction.Type: ApplicationFiled: June 7, 2017Publication date: September 21, 2017Inventors: Takashi Kanno, Takeshi Yamana, Kenji Motoi