Patents by Inventor Tadayoshi Takahashi
Tadayoshi Takahashi 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: 20230207835Abstract: A non-aqueous electrolyte battery includes a positive electrode, a negative electrode, a separator interposed between the positive electrode and the negative electrode, and a nonaqueous electrolytic solution. The positive electrode, the separator, and the negative electrode are spirally wound. The positive electrode includes a positive electrode active material and an expanded metal. The positive electrode has a thickness larger than or equal to 0.8 mm and smaller than or equal to 3 mm. A thickness T of the expanded metal satisfies 0.15 mm?T?0.3 mm. A center-to-center distance SW of the expanded metal in a shorter direction in mesh and a center-to-center distance LW of the expanded metal in a longer direction in mesh satisfy 6 mm2?LW·SW?20 mm2. A feed width W of the expanded metal satisfies 0.15 mm?W?0.3 mm.Type: ApplicationFiled: May 11, 2021Publication date: June 29, 2023Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Naoaki Nishimura, Kyosuke Okazaki, Tadayoshi Takahashi, Yoshiki Shimata
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Publication number: 20230178831Abstract: A hermetically sealed battery includes a battery can having a bottomed cylindrical shape and an opening, an electrode body accommodated in the battery can, a sealing plate covering the opening of the battery can, a rivet disposed on the sealing plate and serving as a terminal, an insulator insulates the sealing plate from the rivet, and an internal lead electrically connected to the rivet. The insulator includes a sealing part sealing between the sealing plate and the rivet and a plate part closer to the electrode body than the sealing part, the plate part being extended in a radial direction of the electrode body. The plate part has a cut-away portion recessed in a periphery of the plate part in the radial direction. The internal lead is partially disposed in the cut-away portion.Type: ApplicationFiled: April 20, 2021Publication date: June 8, 2023Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Masao Ootsuka, Tadayoshi Takahashi, Futoshi Tanigawa, Naoaki Nishimura, Kyosuke Okazaki
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Publication number: 20230027470Abstract: A sealed battery includes a battery can with a bottomed cylindrical shape having an opening, an electrode body accommodated in the battery can, and a sealing plate closing the opening of the battery can. The sealing plate has a first main surface facing an outside of the battery can and a second main surface opposite to the first main surface. The first main surface has a first groove therein with an arc shape. The second main surface has a second groove therein with an arc shape disposed to correspond to the first groove. The first groove has a central angle A1 smaller than a central angle A2 of the second groove. The first groove intersects a symmetry axis of the second groove on the second groove when viewed in a normal direction of the first main surface.Type: ApplicationFiled: November 17, 2020Publication date: January 26, 2023Applicant: Panasonic Intellectual Property Management Co., Ltd.Inventors: Masao Ootsuka, Tadayoshi Takahashi
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Publication number: 20220336934Abstract: A coin-shaped cell containing a battery cell case having a bottom plate and side portion; a sealing plate; a gasket compressed and interposed between the side and a rim portion; power generation elements sealed by the case, the sealing plate, and the gasket; and a pressure-sensitive conductive film disposed on an outer surface of one of the case and the sealing plate. The pressure-sensitive conductive film includes a first elastomer layer that holds conductive particles, and a second elastomer layer which is disposed on at least one surface of the first elastomer layer and is in contact with at least a part of the conductive particles. An average particle diameter of the conductive particles is equal to or larger than a thickness of an elastomer part of the first elastomer layer, and the conductive particles are disposed in a single layer in a planar direction of the first elastomer layer.Type: ApplicationFiled: September 4, 2020Publication date: October 20, 2022Applicant: PANASONIC CORPORATIONInventors: Tadayoshi TAKAHASHI, Tomohiro KIKO, Rina NAKAMURA, Shuichi OHTSUBO, Kazuyuki OHDATE
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Patent number: 11469463Abstract: A cylindrical battery including a battery case and a lid, the battery case having an opening doubly wound and tightened to be sealed by an outer peripheral portion of the lid, wherein an opening-side outer peripheral portion of the battery case has a diameter reduced inward in the radial direction, an outer peripheral surface of the battery case is covered with a label, a space surrounded by the outer peripheral surface of the battery case, the outer peripheral portion of the lid, and the label is provided, and 1.2×T1?D?2.7×T1 is satisfied in a range of 0.1 mm?T1?0.5 mm, where D is a diameter of an inscribed circle that is tangent to the outer peripheral surface of the battery case, the outer peripheral portion of the lid, and the label, and T1 is a thickness of the battery case.Type: GrantFiled: September 21, 2018Date of Patent: October 11, 2022Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Kenji Yamato, Tadayoshi Takahashi
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Publication number: 20220231307Abstract: A lithium primary battery including a current collecting wire that electrically connects an electrode body and a sealing body or a battery can, in which the electrode body includes a positive electrode, a negative electrode, and a separator, the negative electrode includes at least one selected from the group consisting of metal lithium and a lithium alloy, the current collecting wire includes a first lead connected to one of the positive electrode and the negative electrode, a second lead connected to the sealing body or the battery can, and an overdischarge suppressing element interposed between the first lead and the second lead, the overdischarge suppressing element includes a first metal layer connected to the first lead, with the first metal layer being thinner than the first lead, a second metal layer connected to the second lead, with the second metal layer being thinner than the second lead, and a conductive layer interposed between the first metal layer and the second metal layer disposed to face eaType: ApplicationFiled: April 16, 2020Publication date: July 21, 2022Inventors: KYOSUKE OKAZAKI, TADAYOSHI TAKAHASHI, FUTOSHI TANIGAWA, NAOAKI NISHIMURA
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Publication number: 20210384526Abstract: A lithium primary battery includes a wound electrode body obtained by winding a sheet-like positive electrode, a sheet-like negative electrode, and a separator interposed between the positive electrode and the negative electrode, and a nonaqueous electrolyte solution. The positive electrode includes manganese dioxide as a positive electrode active material. The negative electrode includes at least one selected from the group consisting of metallic lithium and lithium alloys, and has a first principal surface and a second principal surface opposite to the first principal surface. An entire surface of each of the first principal surface and the second principal surface faces the positive electrode. A total area of the first principal surface and the second principal surface is 100 cm2 or more and 180 cm2 or less.Type: ApplicationFiled: August 7, 2019Publication date: December 9, 2021Inventors: NAOAKI NISHIMURA, TADAYOSHI TAKAHASHI, KYOSUKE OKAZAKI, FUTOSHI TANIGAWA
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Publication number: 20210265689Abstract: A battery including a battery can including a cylinder portion, a bottom wall for closing a first end of the cylinder portion, and an opening edge continuous to a second end of the cylinder portion; a power generation element housed in the cylinder portion; and a sealing plate fixed to the opening edge so as to seal an opening of the opening edge. The sealing plate includes a lid portion, and a peripheral edge portion continuous to the lid portion, the opening edge and the peripheral edge portion are linked to each other by a double seaming structure, and 0.1 mm?T1?0.5 mm, 0.1 mm?T2?0.5 mm, 1.1?T2/T1?3.0, and ?0.21T2+1.72T1?X?0.27T2+4.51T1 are satisfied, where X (min) is an overlap length of a body hook of the opening edge and a cover hook of the peripheral edge portion in the double seaming structure, T1 is a thickness of the body hook, and T2 is a thickness of the cover hook.Type: ApplicationFiled: January 15, 2019Publication date: August 26, 2021Inventors: KENJI YAMATO, TADAYOSHI TAKAHASHI
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Publication number: 20200350521Abstract: A cylindrical battery including a battery case and a lid, the battery case having an opening doubly wound and tightened to be sealed by an outer peripheral portion of the lid, wherein an opening-side outer peripheral portion of the battery case has a diameter reduced inward in the radial direction, an outer peripheral surface of the battery case is covered with a label, a space surrounded by the outer peripheral surface of the battery case, the outer peripheral portion of the lid, and the label is provided, and 1.2×T1?D?2.7×T1 is satisfied in a range of 0.1 mm?T1?0.5 mm, where D is a diameter of an inscribed circle that is tangent to the outer peripheral surface of the battery case, the outer peripheral portion of the lid, and the label, and T1 is a thickness of the battery case.Type: ApplicationFiled: September 21, 2018Publication date: November 5, 2020Inventors: KENJI YAMATO, TADAYOSHI TAKAHASHI
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Patent number: 10629859Abstract: A coin type battery includes: a battery case having a bottom plate and a side portion rising from a rim of the bottom plate; a sealing plate having a top plate and a rim portion extending from the top plate to the inside of the side portion; a gasket compressed and interposed between the side portion and the rim portion; and a power generation element sealed by the battery case and the sealing plate. At least one of the battery case and the sealing plate includes a plated layer disposed on the outer surface side, and a substrate layer disposed on the inner surface side of the plated layer. The plated layer includes at least two metals selected from a set consisting of nickel, zinc, and tin.Type: GrantFiled: December 16, 2016Date of Patent: April 21, 2020Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Tomohiro Yagishita, Tadayoshi Takahashi
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Patent number: 10587004Abstract: A nonaqueous electrolyte battery includes a positive electrode, a negative electrode, a separator interposed between the positive electrode and negative electrode, and a nonaqueous electrolyte. The positive electrode includes vanadium pentoxide, a first carbon black, and a first binder. The negative electrode includes a silicon-containing material, graphite, a second carbon black, and a second binder. When the battery voltage is 0 V, the potential of each of the positive electrode and negative electrode is 2.5 to 3.5 V versus metal lithium.Type: GrantFiled: October 21, 2016Date of Patent: March 10, 2020Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Tadayoshi Takahashi, Tomohiro Yagishita, Toshie Wata
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Publication number: 20190074519Abstract: A nonaqueous electrolyte battery includes a power generation element and a case for accommodating the power generation element. The power generation element includes a positive electrode, a negative electrode, and a nonaqueous electrolyte. At least one selected from a group consisting of the positive electrode, the negative electrode, and the case includes stainless steel containing Sn.Type: ApplicationFiled: October 7, 2016Publication date: March 7, 2019Inventors: TOMOHIRO YAGISHITA, TADAYOSHI TAKAHASHI, MASAO OOTSUKA, KYOUSUKE OKAZAKI
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Publication number: 20180358650Abstract: A nonaqueous electrolyte battery includes a positive electrode, a negative electrode, a separator interposed between the positive electrode and negative electrode, and a nonaqueous electrolyte. The positive electrode includes vanadium pentoxide, a first carbon black, and a first binder. The negative electrode includes a silicon-containing material, graphite, a second carbon black, and a second binder. When the battery voltage is 0 V, the potential of each of the positive electrode and negative electrode is 2.5 to 3.5 V versus metal lithium.Type: ApplicationFiled: October 21, 2016Publication date: December 13, 2018Inventors: TADAYOSHI TAKAHASHI, TOMOHIRO YAGISHITA, TOSHIE WATA
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Patent number: 10103361Abstract: A coin type battery includes a battery case, a sealing plate, and a power generation element sealed by the battery case and the sealing plate. At least one of the battery case and the sealing plate is made of a cladding material that includes: a surface layer disposed on the outer surface side; an intermediate layer disposed on the inner surface side of the surface layer; and a substrate layer disposed on the inner surface side of the intermediate layer. The surface layer is made of nickel, and the intermediate layer contains titanium.Type: GrantFiled: December 19, 2016Date of Patent: October 16, 2018Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Tadayoshi Takahashi, Tomohiro Yagishita
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Publication number: 20180138467Abstract: A coin type battery includes a battery case, a sealing plate, and a power generation element sealed by the battery case and the sealing plate. At least one of the battery case and the sealing plate is made of a cladding material that includes: a surface layer disposed on the outer surface side; an intermediate layer disposed on the inner surface side of the surface layer; and a substrate layer disposed on the inner surface side of the intermediate layer. The surface layer is made of nickel, and the intermediate layer contains titanium.Type: ApplicationFiled: December 19, 2016Publication date: May 17, 2018Inventors: TADAYOSHI TAKAHASHI, TOMOHIRO YAGISHITA
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Publication number: 20180062119Abstract: A coin type battery includes: a battery case having a bottom plate and a side portion rising from a rim of the bottom plate; a sealing plate having a top plate and a rim portion extending from the top plate to the inside of the side portion; a gasket compressed and interposed between the side portion and the rim portion; and a power generation element sealed by the battery case and the sealing plate. At least one of the battery case and the sealing plate includes a plated layer disposed on the outer surface side, and a substrate layer disposed on the inner surface side of the plated layer. The plated layer includes at least two metals selected from a set consisting of nickel, zinc, and tin.Type: ApplicationFiled: December 16, 2016Publication date: March 1, 2018Inventors: TOMOHIRO YAGISHITA, TADAYOSHI TAKAHASHI
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Patent number: 9508984Abstract: A coin-type lithium secondary battery includes a positive electrode, a negative electrode, a separator interposed between the positive electrode and the negative electrode, and a non-aqueous electrolyte. The negative electrode includes a negative electrode active material including a silicon alloy material, a conductive agent including a carbon material, and a binder. The silicon alloy material includes a phase A including a lithium-silicon alloy and a phase B including an intermetallic compound of a transition metal element and silicon. In the lithium-silicon alloy, a ratio of lithium atoms relative to silicon atoms is 2.75 to 3.65 in a 100% state-of-charge.Type: GrantFiled: September 15, 2010Date of Patent: November 29, 2016Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Toshie Wata, Tadayoshi Takahashi
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Patent number: 9502698Abstract: Provided is a non-aqueous electrolyte battery including: a power-generating element; and a battery container configured to house the power-generating element. The power-generating element includes: a positive electrode; a negative electrode; a separator interposed between the positive and negative electrodes; and a non-aqueous electrolyte. The battery container includes: a battery case having an opening; a sealing plate configured to close the opening; and a gasket interposed between the battery case and the sealing plate. The gasket includes a PFA resin being a copolymer of tetrafluoroethylene and perfluoroalkyl vinyl ether, and at least a part of the PFA resin has undergone a melting treatment 2 to 20 times to be a first component. The melting treatment includes heating the PFA resin to a melting temperature of 310° C. to 450° C. for melting and then cooling the PFA resin back to a solid.Type: GrantFiled: September 20, 2013Date of Patent: November 22, 2016Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Tadayoshi Takahashi, Kanji Kawakami
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Patent number: 9490479Abstract: Provided is a non-aqueous electrolyte battery excellent in initial static characteristics and continuous charge characteristics. The non-aqueous electrolyte battery includes a pellet-shaped positive electrode, a pellet-shaped negative electrode, a separator interposed between the positive and negative electrodes, and a non-aqueous electrolyte. The positive electrode includes a positive electrode active material, aluminum powder, a conductive agent, and a binder. The positive electrode active material contains vanadium pentoxide. The positive electrode has a porosity of 35.6 to 45.4 vol %. The negative electrode includes a negative electrode active material containing silicon, a conductive agent, and a binder.Type: GrantFiled: March 19, 2013Date of Patent: November 8, 2016Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Toshie Wata, Tadayoshi Takahashi
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Publication number: 20150243942Abstract: Provided is a non-aqueous electrolyte battery including: a power-generating element; and a battery container configured to house the power-generating element. The power-generating element includes: a positive electrode; a negative electrode; a separator interposed between the positive and negative electrodes; and a non-aqueous electrolyte. The battery container includes: a battery case having an opening; a sealing plate configured to close the opening; and a gasket interposed between the battery case and the sealing plate. The gasket includes a PFA resin being a copolymer of tetrafluoroethylene and perfluoroalkyl vinyl ether, and at least a part of the PFA resin has undergone a melting treatment 2 to 20 times to be a first component. The melting treatment includes heating the PFA resin to a melting temperature of 310° C. to 450° C. for melting and then cooling the PFA resin back to a solid.Type: ApplicationFiled: September 20, 2013Publication date: August 27, 2015Inventors: Tadayoshi Takahashi, Kanji Kawakami