Patents by Inventor Masato Kamiya
Masato Kamiya 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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Publication number: 20180131032Abstract: An assembled battery disclosed here includes a plurality of single cell array units each including single cells that are arranged in a lamination direction of a positive electrode and a negative electrode of an electrode body as an arrangement direction. The single cell array units are disposed parallel to each other such that arrangement directions of the single cells constituting the units are parallel to each other. Then, in the assembled battery, none of the single cells included in each of the single cell array units is directly electrically connected to adjacent single cells in the same unit, but is directly electrically connected to any one of the single cells constituting another single cell array unit through a bus bar.Type: ApplicationFiled: October 23, 2017Publication date: May 10, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masaru ISHII, Masato KAMIYA, Takayuki HOJO, Tetsuya KANEKO
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Patent number: 9893327Abstract: An electric storage apparatus includes a plurality of electric storage elements placed side by side along a predetermined direction and a restraint plate placed between two of the electric storage elements adjacent to each other in the predetermined direction. The electric storage element has a power-generating element performing charge and discharge and a case housing the power-generating element. The restraint plate has protruding portions which give a restraint force to the electric storage element and form a space between the restraint plate and the electric storage element. The power-generating element has a positive electrode plate, a negative electrode plate, and a separator placed between the positive electrode plate and the negative electrode plate. The power-generating element includes a reaction area where a chemical reaction associated with the charge and discharge occurs.Type: GrantFiled: February 21, 2012Date of Patent: February 13, 2018Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Keiichiro Kobayashi, Taira Saito, Masaru Ishii, Masato Kamiya
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Patent number: 9755206Abstract: Provided is a nonaqueous electrolyte secondary battery 10 which, in cases where separators 70 each having a heat-resistant layer 74 on only one face thereof are used, has an excellent thermal stability and thus a higher safety and reliability when the battery 10 reaches a high temperature. Such a nonaqueous electrolyte secondary battery 10 includes a positive electrode 30 in which a positive electrode active material layer 34 is provided on both faces of a positive electrode current collector 32, a negative electrode 50 in which a negative electrode active material layer 54 is provided on both faces of a negative electrode current collector 52, at least two separators 70 each having a heat-resistant layer 74 on one face of a base material 72, and an electrolyte. The nonaqueous electrolyte secondary battery has an electrode assembly 20 in which the positive electrode 30 and the negative electrode 50 are stacked on top of one another with the separators 70 interposed therebetween.Type: GrantFiled: April 10, 2012Date of Patent: September 5, 2017Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hiroki Nagai, Hiroyuki Akita, Takumi Tamaki, Katsushi Saito, Masato Kamiya, Shinji Suzuki
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Patent number: 9680183Abstract: This invention provides a lithium secondary battery comprising a positive electrode, a negative electrode, and a non-aqueous electrolyte. On the negative electrode surface, there is present a cyclic siloxane and/or a reaction product thereof. The cyclic siloxane is a cyclic siloxane having at least one side chain comprising a dimethylsiloxy group (a siloxy side chain-containing cyclic siloxane).Type: GrantFiled: August 12, 2013Date of Patent: June 13, 2017Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masato Kamiya, Taira Saito, Shin-ichi Tobishima, Hideyuki Morimoto, Masafumi Unno
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Patent number: 9640791Abstract: A battery includes: an external terminal protruding outward from a main body; a metal terminal for taking out electric power from inside the main body to the external terminal; and an insulating member for insulation between the main body, and the external terminal and the metal terminal. The metal terminal includes a base portion connected to the inside of the main body and extending along the same plane as one face of the main body from which the external terminal protrudes and an end portion which further extends from the base portion and to which the external terminal is fixed. The external terminal includes a tip end face formed as a sloping face which is low on the end portion side of the metal terminal and high on the base portion side of the metal terminal.Type: GrantFiled: January 23, 2012Date of Patent: May 2, 2017Assignee: Toyota Jidosha Kabushiki KaishaInventors: Masato Kamiya, Taira Saito
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Publication number: 20160093844Abstract: A first end plate is disposed at one end, in a stacking direction, of a stacked body of secondary battery cells. A second end plate is disposed at the other end, in the stacking direction, of the stacked body of the secondary battery cells. A restraining member is joined to the first end plate and the second end plate. The restraining member applies, to the first end plate and the second end plate, restraint loads that sandwich and restrain the stacked body from both sides in the stacking direction. The first end plate is movable relative to the second end plate in the state where the restraining member is joined to both the first end plate and the second end plate.Type: ApplicationFiled: September 29, 2015Publication date: March 31, 2016Applicants: SANYO ELECTRIC CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masato KAMIYA, Taira SAITO, Daisuke IKEDA, Keisuke MINAMI, Toyoki FUJIHARA
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Publication number: 20150325832Abstract: A flat electrode body of a battery has a first-side curved end positioned on a first side of an electrode body width direction and a second-side curved end positioned on a second side. A positive electrode innermost curved portion of a positive electrode sheet is disposed inside the first-side curved end. When the dimension from a positive electrode connecting portion to the end on the first side of the electrode body is defined as a distance and the dimension from the positive electrode connecting portion to the end on the second side of the electrode body is defined as a distance, the positive electrode connecting portion being in the positive electrode protrusion wound portion and connected to a terminal connecting portion of a positive terminal member, the terminal connecting portion is connected to the positive electrode connecting portion at a position satisfying the condition Ha?1.1Hb.Type: ApplicationFiled: January 29, 2013Publication date: November 12, 2015Applicants: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Taira SAITO, Masato KAMIYA, Junpei TERASHIMA, Ayumu KAMAKURA, Shinji SUZUKI
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Publication number: 20150295219Abstract: A battery includes: an external terminal protruding outward from a main body; a metal terminal for taking out electric power from inside the main body to the external terminal; and an insulating member for insulation between the main body, and the external terminal and the metal terminal. The metal terminal includes a base portion connected to the inside of the main body and extending along the same plane as one face of the main body from which the external terminal protrudes and an end portion which further extends from the base portion and to which the external terminal is fixed. The external terminal includes a tip end face formed as a sloping face which is low on the end portion side of the metal terminal and high on the base portion side of the metal terminal.Type: ApplicationFiled: January 23, 2012Publication date: October 15, 2015Inventors: Masato Kamiya, Taira Saito
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Publication number: 20150249266Abstract: The main object of the present invention is to provide a sulfide solid electrolyte material with less hydrogen sulfide generation amount. The present invention solves the above-mentioned problem by providing a sulfide solid electrolyte material using a raw material composition containing Li2S and sulfide of an element of the group 14 or the group 15 in the periodic table, containing substantially no cross-linking sulfur and Li2S.Type: ApplicationFiled: May 12, 2015Publication date: September 3, 2015Inventors: Masahiro TATSUMISAGO, Akitoshi HAYASHI, Shigenori HAMA, Koji KAWAMOTO, Yasushi TSUCHIDA, Hiroshi NAGASE, Yukiyoshi UENO, Masato KAMIYA
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Publication number: 20150244024Abstract: The main object of the present invention is to provide a sulfide solid electrolyte material with less hydrogen sulfide generation amount. The present invention solves the above-mentioned problem by providing a sulfide solid electrolyte material using a raw material composition containing Li2S and sulfide of an element of the group 14 or the group 15 in the periodic table, containing substantially no cross-linking sulfur and Li2S.Type: ApplicationFiled: May 12, 2015Publication date: August 27, 2015Inventors: Masahiro TATSUMISAGO, Akitoshi HAYASHI, Shigenori HAMA, Koji KAWAMOTO, Yasushi TSUCHIDA, Hiroshi NAGASE, Yukiyoshi UENO, Masato KAMIYA
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Publication number: 20150221983Abstract: This invention provides a lithium secondary battery comprising a positive electrode, a negative electrode, and a non-aqueous electrolyte. On the negative electrode surface, there is present a cyclic siloxane and/or a reaction product thereof. The cyclic siloxane is a cyclic siloxane having at least one side chain comprising a dimethylsiloxy group (a siloxy side chain-containing cyclic siloxane).Type: ApplicationFiled: August 12, 2013Publication date: August 6, 2015Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masato Kamiya, Taira Saito, Shin-ichi Tobishima, Hideyuki Morimoto, Masafumi Unno
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Patent number: 9064615Abstract: The main object of the present invention is to provide a sulfide solid electrolyte material with less hydrogen sulfide generation amount. The present invention solves the above-mentioned problem by providing a sulfide solid electrolyte material obtained by using a raw material composition containing Li2S and sulfide of an element of the fourteenth family or the fifteenth family, characterized by not substantially containing cross-linking sulfur and Li2S.Type: GrantFiled: February 2, 2010Date of Patent: June 23, 2015Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masahiro Tatsumisago, Akitoshi Hayashi, Shigenori Hama, Koji Kawamoto, Yasushi Tsuchida, Hiroshi Nagase, Yukiyoshi Ueno, Masato Kamiya
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Publication number: 20150064529Abstract: Provided is a nonaqueous electrolyte secondary battery 10 which, in cases where separators 70 each having a heat-resistant layer 74 on only one face thereof are used, has an excellent thermal stability and thus a higher safety and reliability when the battery 10 reaches a high temperature. Such a nonaqueous electrolyte secondary battery 10 includes a positive electrode 30 in which a positive electrode active material layer 34 is provided on both faces of a positive electrode current collector 32, a negative electrode 50 in which a negative electrode active material layer 54 is provided on both faces of a negative electrode current collector 52, at least two separators 70 each having a heat-resistant layer 74 on one face of a base material 72, and an electrolyte. The nonaqueous electrolyte secondary battery has an electrode assembly 20 in which the positive electrode 30 and the negative electrode 50 are stacked on top of one another with the separators 70 interposed therebetween.Type: ApplicationFiled: April 10, 2012Publication date: March 5, 2015Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroki Nagai, Hiroyuki Akita, Takumi Tamaki, Katsushi Saito, Masato Kamiya, Shinji Suzuki
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Patent number: 8968939Abstract: A solid electrolyte material that can react with an electrode active material to forms a high-resistance portion includes fluorine.Type: GrantFiled: April 28, 2010Date of Patent: March 3, 2015Assignee: Toyota Jidosha Kabushiki KaishaInventors: Yasushi Tsuchida, Koji Kawamoto, Yukiyoshi Ueno, Shigenori Hama, Masato Kamiya, Hiroshi Nagase
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Publication number: 20150056487Abstract: An electric storage apparatus includes a plurality of electric storage elements placed side by side along a predetermined direction and a restraint plate placed between two of the electric storage elements adjacent to each other in the predetermined direction. The electric storage element has a power-generating element performing charge and discharge and a case housing the power-generating element. The restraint plate has protruding portions which give a restraint force to the electric storage element and form a space between the restraint plate and the electric storage element. The power-generating element has a positive electrode plate, a negative electrode plate, and a separator placed between the positive electrode plate and the negative electrode plate. The power-generating element includes a reaction area where a chemical reaction associated with the charge and discharge occurs.Type: ApplicationFiled: February 21, 2012Publication date: February 26, 2015Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Keiichiro Kobayashi, Taira Saito, Masaru Ishii, Masato Kamiya
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Patent number: 8741460Abstract: A lithium ion secondary battery includes a flat-shaped electrode wound body. Positive and negative terminals are connected respectively to the body and placed to partially protrude from a battery lid. Assuming that the body length in a winding axial direction is W, the body size in a direction perpendicular to the axial direction and parallel to the flat surfaces is H, and a distance between a farthest position in a connecting range of one of the terminals, in which the terminal is connected to an uncoated portion, from the lid and the body edge located on the lid side is X, the values W, H, and X are determined so that a point defined in a plane (X/H, H/W) by values (X/H) and (H/W) is located in a triangle defined by joining three points, (0.50, 0.70), (0.32, 0.40), and (0.70, 0.40) in the same plane.Type: GrantFiled: October 31, 2011Date of Patent: June 3, 2014Assignee: Toyota Jidosha Kabushiki KaishaInventors: Masato Kamiya, Taira Saito
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Patent number: 8591603Abstract: The main object of the present invention is to provide a method for producing an all solid lithium battery, capable of easily performing dew point control in a battery assembly step. The present invention solves the above-mentioned problems by providing a method for producing an all solid lithium battery, comprising the steps of: preparing a material composition by adding Li2S, P2S5, and P2O5 so as to satisfy a relation of (Li2S)/(P2S5+P2O5)<3 on a molar basis, synthesizing a sulfide solid electrolyte from the above-mentioned material composition by a vitrification means, and assembling an all solid lithium battery in an atmosphere having a dew-point temperature of ?60° C. or more while using the above-mentioned sulfide solid electrolyte.Type: GrantFiled: October 3, 2008Date of Patent: November 26, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventors: Shigenori Hama, Yukiyoshi Ueno, Yasushi Tsuchida, Hirofumi Nakamoto, Masato Kamiya, Hiroshi Nagase
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Patent number: 8557445Abstract: An all-solid-state battery includes: a positive electrode active material layer that contains a positive electrode active material, and a first sulfide solid electrolyte material that contacts the positive electrode active material and that substantially does not have a cross-linking chalcogen; a negative electrode active material layer containing a negative electrode active material; and a solid electrolyte layer that is provided between the positive electrode active material layer and the negative electrode active material layer, and that contains a second sulfide solid electrolyte material that substantially has a cross-linking chalcogen.Type: GrantFiled: April 27, 2010Date of Patent: October 15, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventors: Yasushi Tsuchida, Yukiyoshi Ueno, Shigenori Hama, Masato Kamiya, Hiroshi Nagase
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Patent number: 8557412Abstract: It is a major object of the invention to provide a method for processing a battery member, by which a cathode active material and a sulfide solid electrolyte material can be efficiently separated from each other and the cathode active material and Li contained in the sulfide solid electrolyte material can be efficiently recovered.Type: GrantFiled: March 16, 2009Date of Patent: October 15, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventors: Yasushi Tsuchida, Yukinari Kotani, Yukiyoshi Ueno, Shigenori Hama, Hirofumi Nakamoto, Hiroshi Nagase, Masato Kamiya
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Patent number: 8283388Abstract: A main object of the present invention is to provide a method for producing a solid electrolyte material-containing sheet excellent in strength. The present invention attains the object by providing a method for producing a solid electrolyte material-containing sheet comprising the steps of: preparing a raw material composition containing a sulfide solid electrolyte material and a binder composition containing a monomer or oligomer having a double bond and a radical polymerization initiator; applying the raw material composition to form a sheet-shaped composition; and polymerizing the sheet-shaped composition by radical polymerization.Type: GrantFiled: February 9, 2009Date of Patent: October 9, 2012Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hirofumi Nakamoto, Yukiyoshi Ueno, Shigenori Hama, Yasushi Tsuchida, Hiroshi Nagase, Masato Kamiya, Satoshi Wakasugi