Patents by Inventor Yuma Yamaguchi
Yuma Yamaguchi 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: 20240039096Abstract: Provided are a highly reliable cylindrical battery and the like which exhibit a small variation in operation pressure of a current cutoff mechanism. A cylindrical battery comprises a current cutoff mechanism having a sealing body which includes a terminal plate for cutting off flowing of current by being broken. A gasket of the cylindrical battery has, in an independent state before incorporation into an exterior can, a cylindrical part and an annular part which extends from an end at a first axial side of the cylindrical part to the radially inner side. The annular part has, at a radially inner side portion of a surface at the first axial side, a recess recessed toward a second axial side.Type: ApplicationFiled: August 26, 2021Publication date: February 1, 2024Applicant: SANYO Electric Co., Ltd.Inventors: Yuma Yamaguchi, Shuji Sugimoto
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Patent number: 11011806Abstract: A cylindrical battery with an electrode body in which a negative electrode plate and a positive electrode plate connected to a plurality of positive electrode leads are rolled with a separator interposed therebetween, a first insulating plate disposed on the electrode body, a current-collection plate disposed on the first insulating plate, a second insulating plate disposed in contact with an opposite surface of the current-collection plate that opposes the first insulating plate, a sealing body, and an outer jacket can, wherein the first insulating plate has at least one through hole, the first positive electrode lead passes through the through hole and between the first insulating plate and the second insulating plate, is bent from the outer-circumference portion of the current-collection plate onto the current-collection plate and the second insulating plate is provided with a recessed portion to house the first positive electrode lead.Type: GrantFiled: March 22, 2018Date of Patent: May 18, 2021Assignee: SANYO Electric Co., Ltd.Inventors: Takahiro Fukuoka, Shuichi Yamashita, Yuma Yamaguchi, Hiromichi Wakabayashi
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Publication number: 20200136097Abstract: A cylindrical battery including an electrode body in which a positive electrode plate and a negative electrode plate with a separator between the electrodes are wound; an electrolyte; a bottomed cylindrical exterior can that houses the electrode body and the electrolyte; and an opening sealing body. The opening sealing body includes a terminal cap, a valve disc included in a current cut-off mechanism, and a washer having an opening at a center, interposed between the terminal cap and the valve disc, the washer has a recessed section formed in surroundings of the opening and a planar section disposed in surroundings of the recessed section on each of surfaces at both ends in a thickness direction of the washer, and boundary lines each between the recessed section and the planar section of each of the surfaces of the washer are arranged to be overlapped with each other in the thickness direction.Type: ApplicationFiled: July 18, 2018Publication date: April 30, 2020Applicant: SANYO Electric Co., Ltd.Inventors: Yuma Yamaguchi, Shuichi Yamashita, Takahiro Fukuoka
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Publication number: 20200044226Abstract: A cylindrical battery with an electrode body in which a negative electrode plate and a positive electrode plate connected to a plurality of positive electrode leads are rolled with a separator interposed therebetween, a first insulating plate disposed on the electrode body, a current-collection plate disposed on the first insulating plate, a second insulating plate disposed in contact with an opposite surface of the current-collection plate that opposes the first insulating plate, a sealing body, and an outer jacket can, wherein the first insulating plate has at least one through hole, the first positive electrode lead passes through the through hole and between the first insulating plate and the second insulating plate, is bent from the outer-circumference portion of the current-collection plate onto the current-collection plate and the second insulating plate is provided with a recessed portion to house the first positive electrode lead.Type: ApplicationFiled: March 22, 2018Publication date: February 6, 2020Applicant: SANYO Electric Co., Ltd.Inventors: Takahiro Fukuoka, Shuichi Yamashita, Yuma Yamaguchi, Hiromichi Wakabayashi
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Patent number: 10461304Abstract: A cylindrical battery including an electrode body in which a negative electrode plate and a positive electrode plate to which a plurality of positive electrode leads is connected are wound with a separator interposed therebetween; an upper insulating plate disposed on the electrode body; a positive electrode current collector plate disposed on the upper insulating plate; a sealing body; and an outer can. A first positive electrode lead extends between the upper insulating plate and the current collector plate after passing through a through-hole of the upper insulating plate and is bent onto the current collector plate at an outer circumference portion thereof, and a second positive electrode lead extends along the outside of an outer circumference portion of the upper insulating plate and is bent onto the current collector plate at the outer circumference portion thereof. Those positive electrode leads are all connected to the current collector plate.Type: GrantFiled: November 27, 2015Date of Patent: October 29, 2019Assignee: SANYO Electric Co., Ltd.Inventors: Takahiro Fukuoka, Shuichi Yamashita, Yuma Yamaguchi, Kyosuke Miyata
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Patent number: 10263237Abstract: A cylindrical battery according to one aspect of the present invention includes an electrode body in which a negative electrode plate and a positive electrode plate to which a plurality of positive electrode leads is connected are wound with a separator interposed therebetween; an electrolyte liquid; a cylindrical outer can having a bottom portion which receives the electrode body and the electrolyte liquid; and a sealing body sealing an open portion of the outer can. The positive electrode leads extend along an outer circumference portion of a collector member disposed on the electrode body and are connected to a surface of the collector member at an outer side of the battery. The collector member includes a collector plate to which the positive electrode leads are connected and a first insulating plate fitted to a surface of the collector plate at an inner side of the battery.Type: GrantFiled: March 18, 2016Date of Patent: April 16, 2019Assignee: SANYO Electric Co., Ltd.Inventors: Yuma Yamaguchi, Takahiro Fukuoka, Shuichi Yamashita, Kyosuke Miyata
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Patent number: 10069118Abstract: A sealing body of a battery includes a positive electrode cap, a safety valve electrically connected to the positive electrode cap, a plurality of protrusions that are disposed annularly and intermittently on the outer peripheral side of a conductive contact part of the safety valve and that are each formed so as to be inclined toward the center of the sealing body, and an insulating member that covers at least top parts of the plurality of protrusions, side surfaces thereof on the center side, and a surface of the safety valve on the center side, that is fitted to the center side of the plurality of protrusions, whose vertical sectional shape is bent in a Z-shape. A terminal plate is fitted and fixed to the center side of the insulating member and is connected by welding to the conductive contact portion through a central opening of the insulating member.Type: GrantFiled: December 12, 2013Date of Patent: September 4, 2018Assignee: SANYO Electric Co., Ltd.Inventors: Kenji Yamato, Shuichi Yamashita, Yuma Yamaguchi, Takahiro Fukuoka
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Publication number: 20180130994Abstract: A cylindrical battery according to one aspect of the present invention includes an electrode body in which a negative electrode plate and a positive electrode plate to which a plurality of positive electrode leads is connected are wound with a separator interposed therebetween; an electrolyte liquid; a cylindrical outer can having a bottom portion which receives the electrode body and the electrolyte liquid; and a sealing body sealing an open portion of the outer can. The positive electrode leads extend along an outer circumference portion of a collector member disposed on the electrode body and are connected to a surface of the collector ember at an outer side of the battery. The collector member includes a collector plate to which the positive electrode leads are connected and a first insulating plate fitted to a surface of the collector plate at an inner side of the battery.Type: ApplicationFiled: March 18, 2016Publication date: May 10, 2018Applicant: Sanyo Electric Co., Ltd.Inventors: Yuma Yamaguchi, Takahiro Fukuoka, Shuichi Yamashita, Kyosuke Miyata
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Publication number: 20170346064Abstract: A cylindrical battery including an electrode body in which a negative electrode plate and a positive electrode plate to which a plurality of positive electrode leads is connected are wound with a separator interposed therebetween; an upper insulating plate disposed on the electrode body; a positive electrode current collector plate disposed on the upper insulating plate; a sealing body; and an outer can. A first positive electrode lead extends between the upper insulating plate and the current collector plate after passing through a through-hole of the upper insulating plate and is bent onto the current collector plate at an outer circumference portion thereof, and a second positive electrode lead extends along the outside of an outer circumference portion of the upper insulating plate and is bent onto the current collector plate at the outer circumference portion thereof. Those positive electrode leads are all connected to the current collector plate.Type: ApplicationFiled: November 27, 2015Publication date: November 30, 2017Applicant: SANYO Electric Co., Ltd.Inventors: Takahiro Fukuoka, Shuichi Yamashita, Yuma Yamaguchi, Kyosuke Miyata
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Patent number: 9806323Abstract: A sealing body according to the present invention is sealing body for a sealed battery including conductive terminal cap, a conductive explosion-proof valve electrically connected to the terminal cap, a conductive terminal plate having an abutting surface abutting the explosion-proof valve, and an insulating plate disposed between the explosion-proof valve and the terminal plate. A welded part between the explosion-proof valve and the terminal plate is formed in the inner part of the abutting surface, and the plan-view shape of the welded part is a shape defining an enclosed region, a C-shape, or a spiral shape. A notch part surrounding the welded part is formed in the terminal plate. The breaking pressure of the welded part is higher than the breaking pressure of the notch part.Type: GrantFiled: October 27, 2014Date of Patent: October 31, 2017Assignee: SANYO Electric Co., Ltd.Inventors: Takahiro Fukuoka, Shuichi Yamashita, Yuma Yamaguchi, Yuki Iida
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Publication number: 20160285071Abstract: A sealing body according to the present invention is sealing body for a sealed battery including conductive terminal cap, a conductive explosion-proof valve electrically connected to the terminal cap, a conductive terminal plate having an abutting surface abutting the explosion-proof valve, and an insulating plate disposed between the explosion-proof valve and the terminal plate. welded part between the explosion-proof valve and the terminal plate is formed in the inner part of the abutting surface, and the plan-view shape of the welded part is a shape defining an enclosed region, a C-shape, or a spiral shape. A notch part surrounding the welded part is formed in the terminal plate. The breaking pressure of the welded part is higher than the breaking pressure of the notch part.Type: ApplicationFiled: October 27, 2014Publication date: September 29, 2016Applicant: SANYO ELECTRIC CO., LTD.Inventors: Takahiro FUKUOKA, Shuichi YAMASHITA, Yuma YAMAGUCHI, Yuki IIDA
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Publication number: 20150333313Abstract: A sealing body of a battery includes a positive electrode cap, a safety valve electrically connected to the positive electrode cap, a plurality of protrusions that are disposed annularly and intermittently on the outer peripheral side of a conductive contact part of the safety valve and that are each formed so as to be inclined toward the center of the sealing body, and an insulating member that covers at least top parts of the plurality of protrusions, side surfaces thereof on the center side, and a surface of the safety valve on the center side, that is fitted to the center side of the plurality of protrusions, whose vertical sectional shape is bent in a Z-shape. A terminal plate is fitted and fixed to the center side of the insulating member and is connected by welding to the conductive contact portion through a central opening of the insulating member.Type: ApplicationFiled: December 12, 2013Publication date: November 19, 2015Applicant: SANYO ELECTRIC CO., LTD.Inventors: Kenji Yamato, Shuichi Yamashita, Yuma Yamaguchi, Takahiro Fukuoka
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Publication number: 20140038005Abstract: An object of the present invention is to manufacture a sealed cell having a highly conductive sealing body with a safety valve at high productivity. In order to accomplish above object, the present invention espouses a method of manufacturing a sealed cell including: preparing a terminal cap and a safety valve, the terminal cap including an external terminal projecting toward the outside of the cell, and a flange, and the safety valve including a conductive contact portion projecting toward the inside of the cell, and a peripheral portion and having an outer periphery bent toward the outside of the cell so as to form a bent portion; temporarily fixing the safety valve and the terminal cap together at the bent portion after coupling the safety valve and the terminal cap to each other; and conductively adhering the flange and the peripheral portion to each other near the bent portion.Type: ApplicationFiled: April 25, 2012Publication date: February 6, 2014Applicant: SANYO ELECTRIC CO., LTD.Inventors: Kenji Yamato, Syuichi Yamashita, Yuma Yamaguchi