Patents by Inventor Kojiro TAMARU
Kojiro TAMARU 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: 11955593Abstract: A power storage module includes an electrode laminate including a plurality of bipolar electrodes which are laminated and a sealing body sealing a space between a pair of the bipolar electrodes adjacent to each other in a laminating direction among the plurality of bipolar electrodes in the electrode laminate. Each of the plurality of bipolar electrodes includes an electrode plate. The sealing body includes a group of primary sealing bodies each provided at an edge portion of the electrode plate and a secondary sealing body. The secondary sealing body includes a first resin portion that is provided along a side surface of the electrode laminate extending in the laminating direction and bonds the group of primary sealing bodies, and a second resin portion covering the first resin portion.Type: GrantFiled: January 28, 2019Date of Patent: April 9, 2024Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Kojiro Tamaru, Takafumi Yamasaki, Hiromi Ueda, Tsuyoshi Mariya, Masahiro Yamada
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Patent number: 11916183Abstract: The power storage device includes power storage units arranged with a conductive plate interposed therebetween in the vertical direction, each of the power storage units includes an electrode stack including bipolar electrodes stacked with a separator interposed therebetween, and a sealing member provided around the electrode stack so as to seal a housing space formed between adjacent electrodes of the electrode stack. At least one of the power storage units is provided with an overhang member on an outer peripheral surface of the sealing member. The overhang member includes an inclined portion that extends from the outer peripheral surface of the sealing member toward the outside of the power storage unit and inclines downward as it leaves away from the outer peripheral surface of the sealing member, and a top portion formed at a lower end of the inclined portion.Type: GrantFiled: December 24, 2019Date of Patent: February 27, 2024Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Daiki Terashima, Satoshi Morioka, Takuro Kikuchi, Motoyoshi Okumura, Kojiro Tamaru, Hiromi Ueda, Satoshi Hamaoka, Masahiro Yamada
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Patent number: 11552359Abstract: A power storage device includes a plurality of power storage modules laminated, a conductive plate and a sealing member. The conductive plate and the sealing member are provided between the power storage modules adjacent to each other in a laminating direction of the power storage modules. The plurality of power storage modules each have an electrode laminate, an electrolytic solution, and a sealing body. The electrode laminate has electrode exposed portions exposed from the sealing body at one end and the other end in the laminating direction. Between the power storage modules adjacent to each other in the laminating direction, the conductive plate is disposed between the electrode exposed portions opposing each other to be in contact with the electrode exposed portions, and at least a portion between the sealing bodies opposing each other is filled with the sealing member.Type: GrantFiled: January 13, 2021Date of Patent: January 10, 2023Assignees: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Satoshi Hamaoka, Taku Inoue, Hiromi Ueda, Kojiro Tamaru, Satoshi Morioka, Motoyoshi Okumura
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Patent number: 11515596Abstract: A method for manufacturing an electricity-storage module includes: preparing a stacked body and first sealing portions; processing an extension portion of one or more first sealing portions included in an outer edge portion in a stacking direction of the stacked body so that an extension portion length of the one or more of first sealing portions becomes shorter than a length of the extension portions of the first sealing portions which are not included in the outer edge portion; and forming a second sealing portion that is provided at the periphery of the first sealing portions when viewed from the stacking direction and covers at least parts of outer surfaces of the first sealing portions located at stacking ends of the stacked body in the stacking direction by injection molding in which a resin material is caused to circulate in a mold frame.Type: GrantFiled: September 11, 2018Date of Patent: November 29, 2022Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Masahiro Yamada, Kojiro Tamaru, Takafumi Yamasaki, Takashi Sakai, Hiroki Maeda, Naoto Morisaku, Hiromi Ueda, Akihito Tsuge, Koji Tsukamoto
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Patent number: 11411279Abstract: A power storage module 12 according to a first aspect includes: a laminated body 30 in which bipolar electrodes 32 including an electrode plate 34, a positive electrode 36, and a negative electrode 38, are laminated; a frame body 50 provided with an opening 50a communicated with a plurality of internal spaces V; and a pressure adjustment valve 60 connected to the opening 50a. The pressure adjustment valve 60 includes a base member 70 connected to the opening 50a and provided with a plurality of communication holes 74 respectively communicated with the plurality of internal spaces V, a valve body 80 arranged to shut opening ends 76a of the plurality of communication holes 74, and a cover member 90 pressing the valve body 80 against the base member 70.Type: GrantFiled: February 22, 2018Date of Patent: August 9, 2022Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Satoshi Hamaoka, Kojiro Tamaru, Hirokazu Kotake, Hiroki Maeda
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Patent number: 11404742Abstract: A battery module includes an electrode laminate including a plurality of electrodes that are laminated, and a sealing body sealing a side surface of the electrode laminate. The sealing body is provided with a communication hole communicating an internal space between the electrodes adjacent in a laminating direction in the electrode laminate. The communication hole includes an opening end on an outer surface of the sealing body. A length of the opening end in the laminating direction is longer than a length of the internal space in the laminating direction.Type: GrantFiled: January 23, 2019Date of Patent: August 2, 2022Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Kojiro Tamaru, Taku Inoue, Hiroki Maeda, Tsuyoshi Mariya
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Publication number: 20220093956Abstract: The power storage device includes power storage units arranged with a conductive plate interposed therebetween in the vertical direction, each of the power storage units includes an electrode stack including bipolar electrodes stacked with a separator interposed therebetween, and a sealing member provided around the electrode stack so as to seal a housing space formed between adjacent electrodes of the electrode stack. At least one of the power storage units is provided with an overhang member on an outer peripheral surface of the sealing member. The overhang member includes an inclined portion that extends from the outer peripheral surface of the sealing member toward the outside of the power storage unit and inclines downward as it leaves away from the outer peripheral surface of the sealing member, and a top portion formed at a lower end of the inclined portion.Type: ApplicationFiled: December 24, 2019Publication date: March 24, 2022Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Daiki TERASHIMA, Satoshi MORIOKA, Takuro KIKUCHI, Motoyoshi OKUMURA, Kojiro TAMARU, Hiromi UEDA, Satoshi HAMAOKA, Masahiro YAMADA
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Publication number: 20220094000Abstract: In a power storage module, a side surface of an electrode laminate body has a welded layer where first sealing portions adjacent in a lamination direction are welded. A sealing body has: a side surface (opening wall) provided with a through hole communicating with an internal space; and side surfaces (non-opening walls) lacking the through hole. When viewed from the lamination direction, a width of the welded layer at the opening wall is smaller than a width of the welded layer at the non-opening wall.Type: ApplicationFiled: March 10, 2020Publication date: March 24, 2022Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Kojiro TAMARU, Takashi SAKAI, Masahiro YAMADA, Sho KISHINE, Hiroki MAEDA
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Patent number: 11276903Abstract: An electricity storage device according to one embodiment is an electricity storage device in which a plurality of bipolar electrodes in which a positive electrode layer is provided on one surface of a collector plate and a negative electrode layer is provided on the other surface of the collector plate are stacked via separators and includes a plurality of spacers arranged along peripheral edges of the collector plates between the respective collector plates adjacent to each other in a stacking direction and a resin frame covering outer peripheries of the plurality of spacers.Type: GrantFiled: June 20, 2017Date of Patent: March 15, 2022Assignee: KABUSHIKI KAISHA TOYOTA KIDOSHOKKIInventors: Kojiro Tamaru, Takayuki Hirose, Atsuhiko Nishii, Satoshi Endo, Tomohiro Nakamura
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Publication number: 20210280948Abstract: An electricity storage device according to one embodiment is an electricity storage device in which a plurality of bipolar electrodes in which a positive electrode layer is provided on one surface of a collector plate and a negative electrode layer is provided on the other surface of the collector plate are stacked via separators and includes a plurality of spacers arranged along peripheral edges of the collector plates between the respective collector plates adjacent to each other in a stacking direction and a resin frame covering outer peripheries of the plurality of spacers.Type: ApplicationFiled: June 20, 2017Publication date: September 9, 2021Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Kojiro TAMARU, Takayuki HIROSE, Atsuhiko NISHII, Satoshi ENDO, Tomohiro NAKAMURA
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Publication number: 20210234221Abstract: A power storage device includes a plurality of power storage modules laminated, a conductive plate and a sealing member. The conductive plate and the sealing member are provided between the power storage modules adjacent to each other in a laminating direction of the power storage modules. The plurality of power storage modules each have an electrode laminate, an electrolytic solution, and a sealing body. The electrode laminate has electrode exposed portions exposed from the sealing body at one end and the other end in the laminating direction. Between the power storage modules adjacent to each other in the laminating direction, the conductive plate is disposed between the electrode exposed portions opposing each other to be in contact with the electrode exposed portions, and at least a portion between the sealing bodies opposing each other is filled with the sealing member.Type: ApplicationFiled: January 13, 2021Publication date: July 29, 2021Applicants: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Satoshi HAMAOKA, Taku INOUE, Hiromi UEDA, Kojiro TAMARU, Satoshi MORIOKA, Motoyoshi OKUMURA
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Publication number: 20210184301Abstract: A method for manufacturing an electricity-storage module includes: preparing a stacked body and first sealing portions; processing an extension portion of one or more first sealing portions included in an outer edge portion in a stacking direction of the stacked body so that an extension portion length of the one or more of first sealing portions becomes shorter than a length of the extension portions of the first sealing portions which are not included in the outer edge portion; and forming a second sealing portion that is provided at the periphery of the first sealing portions when viewed from the stacking direction and covers at least parts of outer surfaces of the first sealing portions located at stacking ends of the stacked body in the stacking direction by injection molding in which a resin material is caused to circulate in a mold frame.Type: ApplicationFiled: September 11, 2018Publication date: June 17, 2021Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Masahiro YAMADA, Kojiro TAMARU, Takafumi YAMASAKI, Takashi SAKAI, HIroki MAEDA, Naoto MORISAKU, Hiromi UEDA, Akihito TSUGE, Koji TSUKAMOTO
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Patent number: 10910644Abstract: A nickel-hydrogen battery includes a plurality of electrodes each including a current collector made of a metal, and disposed in a manner stacked in a first direction; a separator disposed between adjacent electrodes of the plurality of electrodes; a plurality of resin members disposed on peripheral portions of the plurality of electrodes to ensure a clearance between the adjacent electrodes; and a surface treatment layer covering one surface of the current collector at least in the peripheral portion of the plurality of electrode. The surface treatment layer includes a plurality of protrusions from the one surface. Widest parts of the protrusions are located above base ends thereof, and parts of the resin members are interposed between adjacent protrusions, across a range from tip ends to the base ends thereof.Type: GrantFiled: January 24, 2018Date of Patent: February 2, 2021Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Tomohiro Nakamura, Takayuki Hirose, Kojiro Tamaru, Yuki Sugimoto, Hirokuni Akiyama, Motoyoshi Okumura, Takuro Kikuchi, Hidenori Takahashi, Nobuyasu Haga
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Publication number: 20200403200Abstract: A battery module includes an electrode laminate including a plurality of electrodes that are laminated, and a sealing body sealing a side surface of the electrode laminate. The sealing body is provided with a communication hole communicating an internal space between the electrodes adjacent in a laminating direction in the electrode laminate. The communication hole includes an opening end on an outer surface of the sealing body. A length of the opening end in the laminating direction is longer than a length of the internal space in the laminating direction.Type: ApplicationFiled: January 23, 2019Publication date: December 24, 2020Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Kojiro TAMARU, Taku INOUE, Hiroki MAEDA, Tsuyoshi MARIYA
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Publication number: 20200358050Abstract: A power storage module includes an electrode laminate including a plurality of bipolar electrodes which are laminated and a sealing body sealing a space between a pair of the bipolar electrodes adjacent to each other in a laminating direction among the plurality of bipolar electrodes in the electrode laminate. Each of the plurality of bipolar electrodes includes an electrode plate. The sealing body includes a group of primary sealing bodies each provided at an edge portion of the electrode plate and a secondary sealing body. The secondary sealing body includes a first resin portion that is provided along a side surface of the electrode laminate extending in the laminating direction and bonds the group of primary sealing bodies, and a second resin portion covering the first resin portion.Type: ApplicationFiled: January 28, 2019Publication date: November 12, 2020Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Kojiro TAMARU, Takafumi YAMASAKI, Hiromi UEDA, Tsuyoshi MARIYA, Masahiro YAMADA
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Patent number: 10756379Abstract: A power storage module includes a cylindrical resin portion that extends in a direction in which a plurality of bipolar electrodes is stacked and that accommodates therein the plurality of the bipolar electrodes. The resin portion includes a first seal portion that has a cylindrical shape and is joined to peripheral edge portions of a plurality of electrode plate, and a second seal portion that has a cylindrical shape and is disposed outside the first seal portion in a direction that crosses the stacking direction of the bipolar electrodes. A plurality of separators is disposed such that outer peripheral ends of the separators are located between an outer peripheral end of the first seal portion and an inner peripheral end of the first seal portion.Type: GrantFiled: November 21, 2017Date of Patent: August 25, 2020Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Atsushi Minagata, Satoshi Kono, Kojiro Tamaru, Satoshi Hamaoka
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Patent number: 10741819Abstract: 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.Type: GrantFiled: February 25, 2016Date of Patent: August 11, 2020Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Takayuki Hirose, Motoaki Okuda, Hiroyasu Nishihara, Kojiro Tamaru
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Publication number: 20200067044Abstract: A power storage module 12 according to a first aspect includes: a laminated body 30 in which bipolar electrodes 32 including an electrode plate 34, a positive electrode 36, and a negative electrode 38, are laminated; a frame body 50 provided with an opening 50a communicated with a plurality of internal spaces V; and a pressure adjustment valve 60 connected to the opening 50a. The pressure adjustment valve 60 includes a base member 70 connected to the opening 50a and provided with a plurality of communication holes 74 respectively communicated with the plurality of internal spaces V, a valve body 80 arranged to shut opening ends 76a of the plurality of communication holes 74, and a cover member 90 pressing the valve body 80 against the base member 70.Type: ApplicationFiled: February 22, 2018Publication date: February 27, 2020Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Satoshi HAMAOKA, Kojiro TAMARU, Hirokazu KOTAKE, Hiroki MAEDA
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Publication number: 20200058935Abstract: A nickel-hydrogen battery includes a plurality of electrodes each including a current collector made of a metal, and disposed in a manner stacked in a first direction; a separator disposed between adjacent electrodes of the plurality of electrodes; a plurality of resin members disposed on peripheral portions of the plurality of electrodes to ensure a clearance between the adjacent electrodes; and a surface treatment layer covering one surface of the current collector at least in the peripheral portion of the plurality of electrode. The surface treatment layer includes a plurality of protrusions from the one surface. Widest parts of the protrusions are located above base ends thereof, and a parts of the resin members are interposed between adjacent protrusions, across a range from the tip ends to the base ends thereof.Type: ApplicationFiled: January 24, 2018Publication date: February 20, 2020Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Tomohiro NAKAMURA, Takayuki HIROSE, Kojiro TAMARU, Yuki SUGIMOTO, Hirokuni AKIYAMA, Motoyoshi OKUMURA, Takuro KIKUCHI, Hidenori TAKAHASHI, Nobuyasu HAGA
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Publication number: 20190334195Abstract: A power storage module includes a cylindrical resin portion that extends in a direction in which a plurality of bipolar electrodes is stacked and that accommodates therein the plurality of the bipolar electrodes. The resin portion includes a first seal portion that has a cylindrical shape and is joined to peripheral edge portions of a plurality of electrode plate, and a second seal portion that has a cylindrical shape and is disposed outside the first seal portion in a direction that crosses the stacking direction of the bipolar electrodes. A plurality of separators is disposed such that outer peripheral ends of the separators are located between an outer peripheral end of the first seal portion and an inner peripheral end of the first seal portion.Type: ApplicationFiled: November 21, 2017Publication date: October 31, 2019Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Atsushi MINAGATA, Satoshi KONO, Kojiro TAMARU, Satoshi HAMAOKA