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公开(公告)号：US20250055101A1
公开(公告)日：2025-02-13
申请号：US18720731
申请日：2022-12-06
Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
Inventor： Yuki OKAMOTO , Keisuke NATSUI , Tomohiro NAKAMURA , Takayuki HIROSE
IPC: H01M50/198 , H01M50/186 , H01M50/193
Abstract: A power storage device includes an electrode stack including a plurality of electrodes, a separator, and a resin sealing portion. The plurality of electrodes include a bipolar electrode. The bipolar electrode includes a current collector, a positive electrode active material layer, and a negative electrode active material layer. The sealing portion includes a first adhesive portion adhered to the current collector, a second adhesive portion adhered to the current collector, a first reinforcing portion bonded to the first adhesive portion, a second reinforcing portion bonded to the second adhesive portion, and an end surface welded portion. A water vapour transmission rate of the end surface welded portion is less than a water vapour transmission rate of the first adhesive portion and a water vapour transmission rate of the second adhesive portion.
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公开(公告)号：US20210020876A1
公开(公告)日：2021-01-21
申请号：US17043941
申请日：2019-04-04
Inventor： Tomohiro NAKAMURA , Yuki CHUJO , Masahiro YAMADA , Takayuki HIROSE , Nobuyasu HAGA , Motoyoshi OKUMURA , Takuro KIKUCHI
Abstract: A power storage module including: a stacked body that includes electrodes stacked along a first direction; a sealing body that includes a first sealing portion joined to an edge portion of each of the electrodes, forms an inner space between the electrodes adjacent to each other, and seals the inner space; and an electrolytic solution that is stored in the inner space and includes an alkali solution. The electrodes include bipolar electrodes, and a negative terminal electrode. The power storage module includes surplus spaces different from the inner space on a route of an alkali creep phenomenon in which the electrolytic solution reaches the outside from the inner space through the negative terminal electrode.
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公开(公告)号：US20200303702A1
公开(公告)日：2020-09-24
申请号：US16088349
申请日：2017-03-31
Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
Inventor： Tomohiro NAKAMURA , Takayuki HIROSE , Yusuke YAMASHITA , Masato OGASAWARA , Shinji SUZUKI , Yasuaki TAKENAKA , Ryuji OIDE , Mikiya KURITA , Atsushi MINAGATA
Abstract: This power storage apparatus has a case accommodating an electrode assembly and an electrolytic solution, and a release valve present in the wall of the case. The electrode assembly includes electrodes which have different polarities and are insulated from each other. A shielding member is arranged between the inner surface of the wall and the end surface of the electrode assembly. A point located in a center of the case in a front view of the case taken in the stacking direction of the electrodes and located in a center of a dimension of the electrode assembly in the stacking direction is referred to as a center point, and a region surrounded by a plane connecting the center point and a contour of the pressure release valve at a shortest distance is referred to as a three-dimensional region. The shielding member includes a shielding portion that entirely covers a cross section of the three-dimensional region along the end face of the electrode assembly.
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公开(公告)号：US20170133657A1
公开(公告)日：2017-05-11
申请号：US15129723
申请日：2015-02-16
Inventor： Takayuki HIROSE , Motoaki OKUDA , Hiroyasu NISHIHARA , Toshiaki IWA , Yoshihiro OGAWA , Makoto MITSUYASU , Norimitsu AKIYOSHI
IPC: H01M2/34
CPC classification number: H01M2/345 , H01M2/1223 , H01M2/1229 , H01M2/1235 , H01M2/1241 , H01M2/1247 , H01M2200/00 , H01M2200/20 , H01M2220/20
Abstract: A current interruption device includes a first conductive member, a second conductive member, a first deformable member, and a second deformable member. The first conductive member is fixed to a casing. The second conductive member is disposed at a position opposed to the first conductive member. The first deformable member is in contact with the second conductive member when pressure in the casing is equal to or less than a predetermined value. Further, the first deformable member is brought out of contact with the second conductive member when the pressure in the casing exceeds the predetermined value. A plastic deformation portion deformed in a manner of projecting toward the second conductive member is provided on a center portion of the second deformable member.
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公开(公告)号：US20160315308A1
公开(公告)日：2016-10-27
申请号：US15037898
申请日：2014-11-10
Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
Inventor： Takayuki HIROSE , Motoaki OKUDA , Hiroyasu NISHIHARA , Kojiro TAMARU
IPC: H01M2/34 , H01M10/0525
CPC classification number: H01M2/345 , H01M10/052 , H01M10/0525 , H01M2200/20
Abstract: A current interruption device disclosed in the present specification includes: a first conductive member and a second conductive member that are facing each other; an insulating seal member disposed therebetween; and an insulating cover accommodating the first conductive member, the second conductive member, and the seal member. The seal member separates a space between the first and second conductive members into an inner space and an outer space which communicates with the space within the casing. In a plan view, the seal member is positioned in an entire area outside of contact portions of the seal member with the first and second conductive members within a range where the first and second conductive members are facing each other. The cover is disposed along outer circumferential edges of the first and second conductive members, and the seal member is in contact with the cover.
Abstract translation: 本说明书中公开的电流中断装置包括：彼此面对的第一导电构件和第二导电构件; 绝缘密封构件，设置在其间; 以及容纳第一导电构件，第二导电构件和密封构件的绝缘盖。 密封构件将第一和第二导电构件之间的空间分隔成与壳体内的空间连通的内部空间和外部空间。 在平面图中，密封构件在第一和第二导电构件彼此面对的范围内被定位在密封构件与第一和第二导电构件的接触部分的外部的整个区域中。 所述盖沿所述第一和第二导电构件的外圆周边缘设置，并且所述密封构件与所述盖接触。
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Patent Agency Ranking
公开(公告)号：US20220059912A1
公开(公告)日：2022-02-24
申请号：US17274830
申请日：2019-09-25
Inventor： Tomohiro NAKAMURA , Takayuki HIROSE , Nobuyasu HAGA , Motoyoshi OKUMURA , Yohei HAMAGUCHI , Kyohei ODA , Yasuaki TAKENAKA
IPC: H01M50/547 , H01M50/186 , H01M10/04
Abstract: A power storage module comprises: an electrode stacked body including a stacked body in which a plurality of bipolar electrodes are stacked, a pair of terminal electrodes located on an outer side of the stacked body in a stacking direction of the bipolar electrodes, and a plurality of metal plates which constitute the stacked body and the pair of terminal electrodes; and a sealing body provided to surround a side surface of the electrode stacked body. The sealing body includes a plurality of first sealing portions coupled to edge portions of the plurality of metal plates, and a second sealing portion that couples the first sealing portions to each other. A thickness adjustment member that adjusts the thickness of the electrode stacked body in the stacking direction is disposed in the electrode stacked body at a position of overlapping the first sealing portions when viewed from the stacking direction.
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公开(公告)号：US20200350525A1
公开(公告)日：2020-11-05
申请号：US16755012
申请日：2018-09-03
Inventor： Tomohiro NAKAMURA , Yuki CHUJO , Masahiro YAMADA , Takayuki HIROSE , Nobuyasu HAGA , Motoyoshi OKUMURA
Abstract: A power storage module includes an electrode laminate in which bipolar electrodes are laminated and a sealing body formed of a resin. The bipolar electrode includes an electrode plate, a positive electrode provided on one surface of the electrode plate, and a negative electrode provided on another surface of the electrode plate. The sealing body is provided on a side surface of the electrode laminate to surround an edge portion of the bipolar electrode. The sealing body includes a first resin portion and a second resin portion. The first resin portion is welded to the edge portion of the bipolar electrode. The second resin portion surrounds the first resin portion from an outer side along the side surface. A mold shrinkage factor of the first resin portion is lower than a mold shrinkage factor of the second resin portion.
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公开(公告)号：US20180183035A1
公开(公告)日：2018-06-28
申请号：US15577540
申请日：2016-05-11
Inventor： Takayuki HIROSE , Mikiya KURITA , Ryuji OIDE , Toshiaki IWA , Yoshihiro OGAWA , Makoto MITSUYASU , Norimitsu AKIYOSHI
IPC: H01M2/34
CPC classification number: H01M2/345 , H01G2/18 , H01G11/16 , H01M2200/20
Abstract: A current interruption device includes a conductive plate and a first deformable plate. The conductive plate includes a center portion and a peripheral portion surrounding the center portion. An upper surface of the center portion is formed in a planar shape spreading in a first direction and a second direction orthogonal thereto in a conductive state. The peripheral portion includes an inclined portion extending outward from a boundary between the center portion and the peripheral portion. An upper surface of the inclined portion is inclined so as to increase a distance to the first deformable plate as the upper surface of the inclined portion becomes farther away from the center portion when the conductive plate and the first deformable plate are viewed along the first direction or the second direction in the conductive state.
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公开(公告)号：US20180123110A1
公开(公告)日：2018-05-03
申请号：US15559531
申请日：2016-02-25
Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
Inventor： Takayuki HIROSE , Motoaki OKUDA , Hiroyasu NISHIHARA , Kojiro TAMARU
Abstract: A tab bundle has a first bent portion, which is at a first end in the stacking direction L of an electrode assembly in a laminated state and is bent toward a second end in the stacking direction L of the electrode assembly, and an extended portion, which protrudes from the first bent portion in the stacking direction L. The tab bundle is electrically connected to a conductive member by means of a conduction part, which is located in the extended portion. The conductive member includes: a fixed piece, which is fixed to the inner surface of a lid member and located between the extended portion and the lid member, and a connecting piece, which intersects the fixed piece and protrudes toward the electrode assembly. The tab bundle is electrically connected to the connecting piece by means of the conduction part, which is located in the extended portion.
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公开(公告)号：US20170163059A1
公开(公告)日：2017-06-08
申请号：US15309894
申请日：2015-04-06
Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
Inventor： Kojiro TAMARU , Motoaki OKUDA , Hiroyasu NISHIHARA , Takayuki HIROSE
CPC classification number: H02J7/0031 , H01G11/16 , H01G11/74 , H01G11/80 , H01M2/06 , H01M2/30 , H01M2/34 , H01M10/44 , H01M2010/4271 , H01M2200/00 , H02J2007/0037
Abstract: An electricity storage device includes a casing, a terminal, and a current interruption device. The terminal includes a column part and a base part. A first sealing member having an insulating property including a first sealing part sealing between the terminal and a terminal wall is provided between the terminal and the terminal wall, and surrounding an entire periphery of the column part. A first insulating member having an insulating property is disposed within a first space provided between the terminal and the terminal wall on a casing inner side relative to the first sealing part, and surrounds the entire periphery of the column part. At least one of the first sealing member and the first insulating member is disposed in the first space from an end face of the first space on a casing outer side to an end face on the casing inner side thereof.
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