Patents by Inventor Yukio Harima
Yukio Harima 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: 11923566Abstract: A sealed battery with a current breaking mechanism, and a conductor member that is, inside the battery, electrically connected to the current breaking mechanism, and that is, outside the battery, electrically connected to the positive electrode external terminal. The current breaking mechanism includes a thin plate-like inversion plate in which an outer peripheral portion thereof is connected to the positive electrode collector member, and an inner peripheral portion thereof is connected to the conductor member. The inversion plate is, upon an increase in pressure inside the battery, capable of having the inner peripheral portion become displaced so as to be separated from the conductor member. An accommodating recess that receives the inner peripheral portion of the inverted collector member separated and displaced from the conductor member is formed in the positive electrode collector member and in a thickness direction of the positive electrode collector member.Type: GrantFiled: November 20, 2018Date of Patent: March 5, 2024Assignee: PANASONIC HOLDINGS CORPORATIONInventors: Yukio Harima, Hiroaki Imanishi
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Publication number: 20220238967Abstract: A technology is provided which suppresses the movement of an electrode body inside of a battery case, and prevents the damage at a junction between an electrode tab group and a collector. A secondary battery herein disclosed includes an exterior body, a sealing plate, an electrode body, an electrode tab group, a terminal, and a collector. The collector has a first region part to be joined with the electrode tab group, a second region part to be joined with the terminal, and a third region part closer to the electrode body than the first region part.Type: ApplicationFiled: January 27, 2022Publication date: July 28, 2022Inventors: Yukio HARIMA, Ryoichi WAKIMOTO
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Publication number: 20220037750Abstract: A secondary battery includes: an electrode body which has a positive and a negative plate inserted in a battery case; a sealing plate which seals an opening in the case; and an external terminal attached thereto. One end of the positive and the negative plate is provided with a current collection tab, the one end closer to the sealing plate, the current collection tab is connected to the external terminal via a current collection terminal member disposed between the electrode body and the sealing plate, in a joined area between the current collection tab and the current collection. terminal member a joined portion of the current collection tab has a recessed form due to joining by ultrasonic wave, and a depth of the recessed form of a joined portion of an end closer to the electrode body is smaller than a depth of the recessed form of other joined portions.Type: ApplicationFiled: July 22, 2019Publication date: February 3, 2022Applicant: Panasonic CorporationInventor: Yukio Harima
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Publication number: 20200403212Abstract: A sealed battery with a current breaking mechanism, and a conductor member that is, inside the battery, electrically connected to the current breaking mechanism, and that is, outside the battery, electrically connected to the positive electrode external terminal. The current breaking mechanism includes a thin plate-like inversion plate in which an outer peripheral portion thereof is connected to the positive electrode collector member, and an inner peripheral portion thereof is connected to the conductor member. The inversion plate is, upon an increase in pressure inside the battery, capable of having the inner peripheral portion become displaced so as to be separated from the conductor member. An accommodating recess that receives the inner peripheral portion of the inverted collector member separated and displaced from the conductor member is formed in the positive electrode collector member and in a thickness direction of the positive electrode collector member.Type: ApplicationFiled: November 20, 2018Publication date: December 24, 2020Applicant: Panasonic CorporationInventors: Yukio Harima, Hiroaki Imanishi
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Patent number: 10700383Abstract: Provided is a nonaqueous electrolyte secondary battery that can be produced with high yield, through suppression of breakage of electrode collector portions during production and through suppression of damage to an electrode body during welding. The nonaqueous electrolyte secondary battery disclosed herein is provided with: an electrode body in which a plurality of electrodes are stacked; and a nonaqueous electrolyte. Each electrode has a collector and an active material layer formed on the collector. Each electrode has a collector portion being an active material layer non-forming portion. The collector portions of the electrodes are grouped and are clamped, in the stacking direction of the electrode body, by two or more members of an electrode collector terminal that is made up of the members. The collector portions of the electrodes and the members that clamp the collector portions are welded.Type: GrantFiled: March 19, 2018Date of Patent: June 30, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tomohiro Matsuura, Yukio Harima, Hiroaki Imanishi, Ichiro Murata, Kiyomi Kozuki
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Patent number: 10103363Abstract: A sealed battery includes: a case main body that has an opening; and a sealing plate that closes off the opening, the sealing plate being joined to the case main body by a weld portion. The weld portion includes a weld bottom surface intersecting with the boundary surface of the case main body and the sealing plane, and the weld bottom surface being substantially orthogonal to the depth direction. A depth of the weld portion on a first virtual plane including the boundary surface, is greater than the depth of the weld portion on a second virtual plane including an outer surface of the case main body, the outer surface being opposite side from the boundary surface in the thickness direction of the case main body.Type: GrantFiled: June 6, 2016Date of Patent: October 16, 2018Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroya Umeyama, Yukio Harima
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Publication number: 20180287210Abstract: Provided is a nonaqueous electrolyte secondary battery that can be produced with high yield, through suppression of breakage of electrode collector portions during production and through suppression of damage to an electrode body during welding. The nonaqueous electrolyte secondary battery disclosed herein is provided with: an electrode body in which a plurality of electrodes are stacked; and a nonaqueous electrolyte. Each electrode has a collector and an active material layer formed on the collector. Each electrode has a collector portion being an active material layer non-forming portion. The collector portions of the electrodes are grouped and are clamped, in the stacking direction of the electrode body, by two or more members of an electrode collector terminal that is made up of the members. The collector portions of the electrodes and the members that clamp the collector portions are welded.Type: ApplicationFiled: March 19, 2018Publication date: October 4, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tomohiro MATSUURA, Yukio HARIMA, Hiroaki IMANISHI, Ichiro MURATA, Kiyomi KOZUKI
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Patent number: 9705111Abstract: Provided is a secondary battery in which a battery lid is fixed to a battery case by inserting the battery lid into an opening of the battery case having the opening, and emitting laser beams to a butting portion between the battery case and the battery lid to perform butt welding, wherein, when a battery lid-side welding mark formed in the battery lid has a distance from a surface of the battery lid to a lower end of the battery lid-side welding mark which is defined as a battery lid-side welding depth, and a battery case-side welding mark formed in the battery case has a distance from the surface of the battery lid to a lower end of the battery case-side welding mark which is defined as a battery case-side welding depth, the battery lid-side welding depth is deeper than the battery case-side welding depth.Type: GrantFiled: April 21, 2015Date of Patent: July 11, 2017Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroya Umeyama, Hiroshi Takamatsu, Yukio Harima, Yasushi Hirakawa
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Patent number: 9634298Abstract: A sealed battery including: an electrode group 4 formed by winding or stacking a positive electrode plate 1 and a negative electrode plate 2 with a separator 3 interposed between the positive electrode plate 1 and the negative electrode plate 2, and housed in a battery case 5, an opening of the battery case 5 being sealed with a sealing plate, wherein a lead 11 extending from one of the electrode plates in the electrode group 4 is laser-welded to the sealing plate 10, and a melting width of an end section 13 of a welded portion 9 between the lead 11 and the sealing plate 10 is smaller than a melting width of a center section of the welded portion 9.Type: GrantFiled: July 21, 2010Date of Patent: April 25, 2017Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Yukio Harima, Koji Funami, Seiji Kumazawa, Kyosuke Miyata, Takahiro Fukuoka, Seiichi Kato
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Publication number: 20160365546Abstract: A sealed battery includes: a case main body that has an opening; and a sealing plate that closes off the opening, the sealing plate being joined to the case main body by a weld portion. The weld portion includes a weld bottom surface intersecting with the boundary surface of the case main body and the sealing plane, and the weld bottom surface being substantially orthogonal to the depth direction. A depth of the weld portion on a first virtual plane including the boundary surface, is greater than the depth of the weld portion on a second virtual plane including an outer surface of the case main body, the outer surface being opposite side from the boundary surface in the thickness direction of the case main body.Type: ApplicationFiled: June 6, 2016Publication date: December 15, 2016Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroya UMEYAMA, Yukio HARIMA
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Publication number: 20150349303Abstract: Provided is a secondary battery in which a battery lid is fixed to a battery case by inserting the battery lid into an opening of the battery case having the opening, and emitting laser beams to a butting portion between the battery case and the battery lid to perform butt welding, wherein, when a battery lid-side welding mark formed in the battery lid has a distance from a surface of the battery lid to a lower end of the battery lid-side welding mark which is defined as a battery lid-side welding depth, and a battery case-side welding mark formed in the battery case has a distance from the surface of the battery lid to a lower end of the battery case-side welding mark which is defined as a battery case-side welding depth, the battery lid-side welding depth is deeper than the battery case-side welding depth.Type: ApplicationFiled: April 21, 2015Publication date: December 3, 2015Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroya UMEYAMA, Hiroshi TAKAMATSU, Yukio HARIMA, Yasushi HIRAKAWA
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Publication number: 20120121954Abstract: A sealed battery including: an electrode group 4 formed by winding or stacking a positive electrode plate 1 and a negative electrode plate 2 with a separator 3 interposed between the positive electrode plate 1 and the negative electrode plate 2, and housed in a battery case 5, an opening of the battery case 5 being sealed with a sealing plate, wherein a lead 11 extending from one of the electrode plates in the electrode group 4 is laser-welded to the sealing plate 10, and a melting width of an end section 13 of a welded portion 9 between the lead 11 and the sealing plate 10 is smaller than a melting width of a center section of the welded portion 9.Type: ApplicationFiled: July 21, 2010Publication date: May 17, 2012Inventors: Yukio Harima, Koji Funami, Seiji kumazawa, Kyosuke Miyata, Takahiro Fukuoka, Seiichi Kato
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Patent number: 8105712Abstract: An electrode group 4 formed by stacking or winding a positive electrode plate 1 and a negative electrode plate 2 with a separator 3 interposed therebetween, is housed in a battery case 5. An opening of the battery case 5 is sealed with a sealing plate 10. A lead 11 extending from one of the positive and negative electrode plates in the electrode group 4 is laser-welded to the sealing plate 10 by application of a laser beam 12 having a spot diameter smaller than a thickness of the lead 11.Type: GrantFiled: June 23, 2009Date of Patent: January 31, 2012Assignee: Panasonic CorporationInventors: Kyosuke Miyata, Takahiro Fukuoka, Yukio Harima, Koji Funami, Seiji Kumazawa
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Publication number: 20110195288Abstract: A sealed battery includes electrode group 4 formed by winding or stacking a positive electrode plate 1 and a negative electrode plate 2 with a separator 3 interposed between the positive electrode plate 1 and the negative electrode plate 2, the electrode group being housed in a battery case 5, and an opening of the battery case 5 being sealed with a sealing plate 10, wherein a lead 11 extending from one of the electrode plates in the electrode group 4 is laser welded to the sealing plate 10, and a welding portion 14 between the lead 11 and the sealing plate 10 has a linear shape straddling at least an end portion of the lead 11.Type: ApplicationFiled: July 27, 2010Publication date: August 11, 2011Inventors: Yukio Harima, Seiji Kumazawa, Koji Funami, Takahiro Fukuoka, Kyosuke Miyata, Seiichi Kato
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Patent number: 5659946Abstract: A method of manufacturing a multicell battery by connecting a plurality of cells in series, with the purposes of improving the charge/discharge characteristics and enhancing the productivity of the manufacturing process. A convex electrode terminal formed in the upper part of one cell is welded to one end of a lead tab, and another cell is disposed above the cell connected to the lead tab so that the center lines of the two cells are parallel. A flat electrode terminal formed in the lower part of the other cell and another end of the lead tab are welded indirectly.Type: GrantFiled: December 15, 1995Date of Patent: August 26, 1997Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yukio Harima, Masao Nakamura, Takashi Nonoshita, Isao Uehara, Saburo Nakatsuka