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公开(公告)号：US10818939B2
公开(公告)日：2020-10-27
申请号：US16075229
申请日：2016-02-03
发明人： Kosuke Shiraki , Takashi Kanno , Takefumi Ito , Masahiro Kuwabara , Hideyuki Yamaguchi , Hayato Fujita , Kiyoaki Hayashi , Kiyoaki Moriuchi
IPC分类号： H01M8/0273 , H01M8/18 , H01M8/247 , H01M8/0271
摘要： Provided is a redox flow battery in which damage is unlikely to occur in a membrane. A redox flow battery includes a pair of adjacent cell frames, each cell frame including a frame body in which a flow channel for an electrolyte is formed, and a bipolar plate disposed inside the frame body; a positive electrode and a negative electrode disposed so as to face each other between the bipolar plates of the pair of cell frames; a membrane interposed between the positive electrode and the negative electrode; a protection plate which covers the flow channel and presses edge portions of the positive electrode or the negative electrode toward the bipolar plate; and a membrane protection structure which prevents the membrane from being broken by contact between the protection plate and the membrane.
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公开(公告)号：US10608275B2
公开(公告)日：2020-03-31
申请号：US15774711
申请日：2017-09-08
发明人： Masahiro Kuwabara , Takashi Kanno
IPC分类号： H01M8/18 , H01M8/2455
摘要： A redox flow battery cell includes a positive electrode, a negative electrode, and a membrane interposed between the positive electrode and the negative electrode. The positive electrode and the negative electrode have an overlapping region where the positive electrode and the negative electrode overlap each other with the membrane therebetween, and at least one of the positive electrode and the negative electrode has a non-overlapping region where the positive electrode and the negative electrode do not overlap each other with the membrane therebetween. The total area of the non-overlapping region is 0.1% to 20% of the area of the overlapping region.
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3.发明授权公开(公告)号：US10211467B2
公开(公告)日：2019-02-19
申请号：US15124483
申请日：2016-03-18
发明人： Takefumi Ito , Takashi Kanno , Masahiro Kuwabara , Katsuya Yamanishi , Hideyuki Yamaguchi , Hayato Fujita , Kiyoaki Hayashi , Kousuke Shiraki , Kiyoaki Moriuchi
IPC分类号： H01M8/0273 , H01M8/18 , H01M8/02 , H01M8/0202 , H01M8/20 , H01M8/2465 , H01M4/86
摘要： A cell frame for a redox flow battery comprises: a bipolar plate; and a frame body provided at an outer periphery of the bipolar plate, the frame body including a manifold which penetrates through front and back surfaces of the frame body and through which an electrolyte flows, and at least one slit being formed on the front surface of the frame body and forming a channel of the electrolyte between the manifold and the bipolar plate, a cross sectional shape of the slit, in a longitudinal direction of the slit, having a width w and a depth h, the width w and the depth h satisfying (A) w≥3 mm and (B) 1/8
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公开(公告)号：US20180358632A1
公开(公告)日：2018-12-13
申请号：US15556530
申请日：2016-12-08
发明人： Masahiro Kuwabara
IPC分类号： H01M8/0273 , H01M8/2455 , H01M8/18 , H01M8/04186
CPC分类号： H01M8/0273 , H01M8/02 , H01M8/04186 , H01M8/18 , H01M8/188 , H01M8/2455 , Y02E60/528
摘要： A frame body, which is provided around a bipolar plate disposed between a positive electrode and a negative electrode of a redox flow battery, includes a positive electrode liquid supply slit and a positive electrode liquid discharge slit for supplying and discharging a positive electrode electrolyte to and from the positive electrode, the slits being provided on the one surface side of the frame body; and a negative electrode liquid supply slit and a negative electrode liquid discharge slit for supplying and discharging a negative electrode electrolyte to and from the negative electrode, the slits being provided on the other surface side of the frame body. At least one pair among a pair of inlets of the positive electrode liquid supply slit and the negative electrode liquid supply slit and a pair of outlets of the positive electrode liquid discharge slit and the negative electrode liquid discharge slit are provided so as to partly overlap each other in the thickness direction of the frame body.
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公开(公告)号：US20180190999A1
公开(公告)日：2018-07-05
申请号：US15738703
申请日：2016-06-16
发明人： Hayato Fujita , Hideyuki Yamaguchi , Takashi Kanno , Takefumi Ito , Masahiro Kuwabara , Kiyoaki Hayashi
摘要： A bipolar plate is a bipolar plate for a battery, the bipolar plate having a positive electrode disposed on a first surface side thereof and a negative electrode disposed on a second surface side thereof, wherein at least one of the first surface and the second surface is provided with a flow path through which an electrolyte flows. The flow path includes an introduction port for the electrolyte, a discharge port for the electrolyte, and a groove section which is located between the introduction port and the discharge port and guides the electrolyte to a predetermined route. The groove section includes a plurality of vertical groove sections which extend in a vertical direction and are arranged in parallel in a direction orthogonal to the vertical direction when the bipolar plate is placed at a predetermined position in the battery.
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公开(公告)号：US11769886B2
公开(公告)日：2023-09-26
申请号：US17425194
申请日：2020-01-24
发明人： Hayato Fujita , Masahiro Kuwabara
IPC分类号： H01M8/0263 , H01M8/2418 , H01M4/86 , H01M8/026 , H01M8/18
CPC分类号： H01M8/0263 , H01M4/8631 , H01M8/026 , H01M8/188 , H01M8/2418
摘要： A battery cell that has a supply edge to which an electrolyte solution is supplied and a discharge edge from which the electrolyte solution is discharged has an introduction port that connects with the supply edge and a discharge port that connects with the discharge edge, and includes a plurality of meandering flow paths each of which is serially formed from the introduction port to the discharge port, the plurality of meandering flow paths being arranged in parallel in a widthwise direction. Each of the meandering flow paths has an introduction-side section extending from the introduction port toward a discharge edge side, a turn-back section that is turned back from an end portion on the discharge edge side of the introduction-side section toward a supply edge side, and a discharge-side section reaching the discharge port from an end portion on the supply edge side of the turn-back section.
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公开(公告)号：US11183702B2
公开(公告)日：2021-11-23
申请号：US16976989
申请日：2018-03-09
发明人： Michiru Kubata , Masahiro Kuwabara
IPC分类号： H01M8/18 , H01M4/86 , H01M8/0273 , H01M8/04537
摘要： A cell that includes a positive electrode, a negative electrode and a membrane interposed between the electrodes, and that is used in a redox flow battery, wherein the membrane includes an ion permeable portion that is permeable to hydrogen ions, at least at a center of the membrane in a plan view, planar areas of the positive electrode and the negative electrode are both 250 cm2 or more, and a planar area of the ion permeable portion is smaller than each of the planar areas of the positive electrode and the negative electrode, and, in the ion permeable portion, a planar area of a facing portion that actually faces the positive electrode and the negative electrode is 50% or more and 99.9% or less of a smaller of the planar areas of the positive electrode and the negative electrode.
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公开(公告)号：US20180108930A1
公开(公告)日：2018-04-19
申请号：US15570066
申请日：2017-02-28
发明人： Masahiro Kuwabara , Haruhisa Toyoda , Takashi Kanno , Takefumi Ito , Hideyuki Yamaguchi , Hayato Fujita , Kousuke Shiraki , Kiyoaki Hayashi
IPC分类号： H01M8/18 , H01M8/2483
CPC分类号： H01M8/188 , H01M8/0247 , H01M8/242 , H01M8/2455 , H01M8/2483 , Y02E60/528
摘要： A frame body for a redox flow battery is provided with a window. The expressions A>C, B>D, and (B/A)≥0.2 are satisfied, where A represents the length of a long side of a rectangle that envelops the window, B represents the width of a horizontal frame corresponding to the long side, C represents the length of a short side of the rectangle, and D represents the width of a vertical frame corresponding to the short side.
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9.发明申请公开(公告)号：US20170110741A1
公开(公告)日：2017-04-20
申请号：US15124483
申请日：2016-03-18
发明人： Takefumi Ito , Takashi Kanno , Masahiro Kuwabara , Katsuya Yamanishi , Hideyuki Yamaguchi , Hayato Fujita , Kiyoaki Hayashi , Kousuke Shiraki , Kiyoaki Moriuchi
IPC分类号： H01M8/0273 , H01M8/20 , H01M8/2465 , H01M8/18
CPC分类号： H01M8/0273 , H01M8/02 , H01M8/0202 , H01M8/18 , H01M8/188 , H01M8/20 , H01M8/2465 , H01M2004/8694 , Y02E60/528
摘要： A cell frame for a redox flow battery comprises: a bipolar plate; and a frame body provided at an outer periphery of the bipolar plate, the frame body including a manifold which penetrates through front and back surfaces of the frame body and through which an electrolyte flows, and at least one slit being formed on the front surface of the frame body and forming a channel of the electrolyte between the manifold and the bipolar plate, a cross sectional shape of the slit, in a longitudinal direction of the slit, having a width w and a depth h, the width w and the depth h satisfying (A) w≧3 mm and (B) 1/8
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公开(公告)号：US11811105B2
公开(公告)日：2023-11-07
申请号：US17425098
申请日：2020-01-24
发明人： Hayato Fujita , Masahiro Kuwabara
IPC分类号： H01M8/0263 , H01M8/18
CPC分类号： H01M8/0263 , H01M8/188
摘要： A battery cell that has a supply edge to which an electrolyte solution is supplied and a discharge edge from which the electrolyte solution is discharged has an introduction port that is in connection with the supply edge and a discharge port that is in connection with the discharge edge, and includes a plurality of meandering flow paths. Each of the meandering flow paths has an introduction-side section extending from the introduction port toward a discharge edge side, a turn-back section that is turned back from an end portion on the discharge edge side of the introduction-side section toward a supply edge side, and a discharge-side section reaching the discharge port from an end portion on the supply edge side of the turn-back section. The turn-back section has at least one of: an inclined portion extending in an oblique direction, and a stepped portion formed in a step shape.
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