Patents by Inventor Hideki Shimamoto
Hideki Shimamoto 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: 20230395330Abstract: A disclosed power storage device includes a power storage element, a case with a bottomed cylindrical shape having an opening at one end and housing the power storage element, and a sealing member for sealing the opening. The case has, in a vicinity of the opening, a first pressing portion pressing a side surface of the sealing member and protruding inward of the case, and a gas vent portion disposed nearer to the one end of the case than an apex which is the most protruded point of the first pressing portion. This can provide a power storage device including an explosion-proof mechanism that has high operational reliability and does not impair airtightness.Type: ApplicationFiled: October 19, 2021Publication date: December 7, 2023Inventors: Toshitaka KOBAYASHI, Eiko ISHII, Hideki SHIMAMOTO, Ryota MORIOKA, Hiroki HAYASHI
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Publication number: 20230223206Abstract: An electrochemical device includes a positive electrode that includes an active layer containing a polyaniline compound. An infrared absorption spectrum of the active layer has a first peak, a second peak, a third peak, and a fourth peak that are derived from the polyaniline compound. The first peak appears at a wave number in a range from 1,100 cm?1 to 1,200 cm?1, inclusive. The second peak appears at a wave number in a range of more than 1,200 cm?1 and less than or equal to 1,400 cm?1. The third peak appears at a wave number in a range from 1,450 cm?1 to 1,550 cm?1, inclusive. And the fourth peak appears at a wave number in a range of more than 1,550 cm?1 and less than or equal to 1,650 cm?1. In a discharged state, a ratio ID3/ID0 of a height ID3 of the third peak to a total ID0 of heights of the first peak, the second peak, the third peak, and the fourth peak ranges from 0.18 to 1.42, inclusive.Type: ApplicationFiled: May 18, 2021Publication date: July 13, 2023Inventors: HIROKI HAYASHI, NAO MATSUMURA, HIDEKI SHIMAMOTO, SHOHEI MASUDA, HIDEO SAKATA, HIROYUKI MAESHIMA
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Publication number: 20230105494Abstract: An electrolytic capacitor includes a capacitor element. The capacitor element includes an anode body, a dielectric layer disposed on a surface of the anode body, a solid electrolyte layer covering at least a part of the dielectric layer, and a first layer covering at least a part of the solid electrolyte layer. The first layer is in contact with the solid electrolyte layer. The first layer constitutes at least a part of the cathode lead-out layer. An electrode potential Ps of the solid electrolyte layer is higher than an electrode potential P1 of the first layer.Type: ApplicationFiled: March 18, 2021Publication date: April 6, 2023Inventors: KEITA UENAKA, KEI HIROTA, HIDEKI SHIMAMOTO, NAO MATSUMURA
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Publication number: 20220328877Abstract: An electrochemical device includes a positive electrode including a positive electrode active material, a negative electrode including a negative electrode active material, and an electrolytic solution. The positive electrode active material contains a conductive polymer, and the conductive polymer is configured to be doped and dedoped with anions. The electrolytic solution contains (a) a first salt of a lithium ion and a first anion and (b) a second salt of a lithium ion and a second anion. The first anion is a bis(sulfonyl)imide anion containing fluorine.Type: ApplicationFiled: June 24, 2020Publication date: October 13, 2022Inventors: HIDEO SAKATA, NAO MATSUMURA, HIDEKI SHIMAMOTO, KENICHI NAGAMITSU, NOBUTAKA TAKEDA
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Publication number: 20220230816Abstract: An electrochemical device, including: a positive electrode including a positive electrode core material, and a positive electrode material layer supported on the positive electrode core material; a negative electrode including a negative electrode core material, and a negative electrode material layer supported on the negative electrode core material; a separator placed between the positive electrode and the negative electrode; and an electrolyte containing lithium ions. The positive electrode material layer contains a conductive polymer. The positive electrode has a positive electrode non-facing portion where the positive electrode material layer does not face the negative electrode material layer, the positive electrode non-facing portion being larger in area than a negative electrode non-facing portion where the negative electrode material layer does not face the positive electrode material layer in the negative electrode.Type: ApplicationFiled: May 8, 2020Publication date: July 21, 2022Inventors: Hideki SHIMAMOTO, Nao MATSUMURA
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Publication number: 20220115699Abstract: An electrochemical device includes a positive electrode including a positive electrode active material, a negative electrode including a negative electrode active material, and an electrolytic solution. The positive electrode active material includes a conductive polymer, and the electrolytic solution contains anions and cations. The conductive polymer is capable of doping and dedoping of the anions. The cations includes a lithium ion and a quaternary ammonium ion.Type: ApplicationFiled: January 22, 2020Publication date: April 14, 2022Inventors: HIDEO SAKATA, NAO MATSUMURA, HIDEKI SHIMAMOTO, TOSHIAKI SHIMIZU
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Patent number: 9287059Abstract: In an electric storage device, a terminal plate includes an element-connecting part electrically connected to a first electrode at a first end of an electric storage element, and an external terminal connected to this element-connecting part. A sealing member is on the element-connecting part, and includes a hole where the external terminal is inserted. The sealing member and the external terminal seal an opening of an outer jacket. The external terminal includes a tapered part on its outer periphery at a tip, and is partially exposed from the sealing member. The tapered part includes a first end and a second end farther away from the element-connecting part than the first end. An edge of a side wall at the opening of the outer jacket is between the first and second ends of the tapered part in a first direction extending from the bottom to the opening of the outer jacket.Type: GrantFiled: June 11, 2014Date of Patent: March 15, 2016Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Teruhisa Miura, Ikufumi Oshima, Kazuhiro Murakami, Hideki Shimamoto, Shusaku Kawasaki, Susumu Nomoto, Motohiro Sakata, Kouji Ueoka, Masayuki Shinjou
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Patent number: 9218912Abstract: An electrochemical capacitor includes electrolytic solution, a capacitor element, and a housing. The electrolytic solution contains cations, anions, solvent formed of materials other than lactones, and a lactone component. The capacitor element includes a negative electrode, a positive electrode, and a separator. The negative electrode includes an electrode layer capable of storing the cations, and the positive electrode includes a polarizable electrode layer and confronts the negative electrode. The separator is disposed between the negative and positive electrodes, and they are layered or wound together. The capacitor element is impregnated with the electrolytic solution. The housing accommodates the capacitor element and the electrolytic solution that contains the lactone component in a quantity ranging from 0.001 wt % to 5 wt % (inclusive) relative to the solvent.Type: GrantFiled: August 2, 2013Date of Patent: December 22, 2015Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Shotaro Doi, Hideki Shimamoto, Susumu Nomoto
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Patent number: 9030805Abstract: Two electrodes are drawn out from a wound capacitor element by a pair of leads. Each of electrodes forming the capacitor element includes a sheet-like collector, an electrode layer formed on the surface of the collector, and an exposed part provided on one edge of the collector. The electrode layer is not formed on the exposed part. The electrodes are wound such that the exposed parts come to both ends of the capacitor element. Two or more points of at least one of the exposed parts are connected together.Type: GrantFiled: March 13, 2013Date of Patent: May 12, 2015Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Teruhisa Miura, Hideki Shimamoto, Shusaku Kawasaki
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Patent number: 8988858Abstract: A negative electrode for an electrochemical capacitor includes a current collector having electric conductivity, and an electrode layer formed on a surface of the current collector and having cations stored therein. In at least a part of the electrode layer, a value of ratio Ia/Ib of peak value Ia indicating a presence of an anion decomposition compound and peak value Ib indicating a presence of an electrolyte in a spectrum of an atom forming the anion is 0.45 or more and less than 2.55 as measured using X-ray photoelectron spectroscopy.Type: GrantFiled: October 14, 2011Date of Patent: March 24, 2015Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Kiyohiro Isii, Hideki Shimamoto, Junko Fujisawa, Susumu Nomoto
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Patent number: 8958197Abstract: An electrode for capacitor includes a current collector having conductivity, a protective layer formed on the current collector, an anchor coat layer formed on the protective layer, and a polarizing electrode layer formed on the anchor coat layer. The protective layer contains an oxyhydroxide and the anchor coat layer contains conductive particles.Type: GrantFiled: March 28, 2011Date of Patent: February 17, 2015Assignee: Panasonic CorporationInventors: Keiichi Kondou, Hideki Shimamoto, Yukihiro Shimasaki, Tomohiro Okuzawa
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Publication number: 20140293510Abstract: In an electric storage device, a terminal plate includes an element-connecting part electrically connected to a first electrode at a first end of an electric storage element, and an external terminal connected to this element-connecting part. A sealing member is on the element-connecting part, and includes a hole where the external terminal is inserted. The sealing member and the external terminal seal an opening of an outer jacket. The external terminal includes a tapered part on its outer periphery at a tip, and is partially exposed from the sealing member. The tapered part includes a first end and a second end farther away from the element-connecting part than the first end. An edge of a side wall at the opening of the outer jacket is between the first and second ends of the tapered part in a first direction extending from the bottom to the opening of the outer jacket.Type: ApplicationFiled: June 11, 2014Publication date: October 2, 2014Inventors: Teruhisa MIURA, Ikufumi OSHIMA, Kazuhiro MURAKAMI, Hideki SHIMAMOTO, Shusaku KAWASAKI, Susumu NOMOTO, Motohiro SAKATA, Kouji UEOKA, Masayuki SHINJOU
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Patent number: 8780528Abstract: An electrolyte includes an organic solvent, a solute and a compound represented by chemical formula [1], both contained in the organic solvent. R1 and R2 represent a methyl group or an ethyl group; R3 represents a functional group having a straight chain including three or more carbon atoms and a hydroxyl group bonded to a terminal carbon; C represents a carbon atom; H represents a hydrogen atom; O represents an oxygen atom; and N represents a nitrogen atom.Type: GrantFiled: June 25, 2012Date of Patent: July 15, 2014Assignee: Panasonic CorporationInventors: Seiji Takagi, Hideki Shimamoto, Hiroyuki Maeshima, Nao Matsumura
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Patent number: 8693166Abstract: A capacitor includes a first collector made of metal foil, a first electrode layer placed on a surface of the first collector and mainly containing a carbonaceous material, a resin layer provided on the first electrode layer, a second electrode provided on the resin layer and mainly containing a carbonaceous material, a second collector provided on the second electrode layer and made of metal foil, a case accommodating the first collector, the first electrode layer, the resin layer, the second electrode, and the second collector therein, and an electrolyte accommodated in the case. The resin layer has a non-woven fabric form of fibers made of resin irregularly bonded to one another. The fibers of the resin layer intertwine with the first electrode layer. The fibers of the resin layer intertwine with the first electrode layer. This capacitor can be thin and small.Type: GrantFiled: June 5, 2008Date of Patent: April 8, 2014Assignee: Panasonic CorporationInventors: Keiichi Kondou, Hideki Shimamoto, Yukihiro Shimasaki
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Publication number: 20140085774Abstract: An electrolyte includes an organic solvent, a solute and a compound represented by chemical formula [1], both contained in the organic solvent. R1 and R2 represent a methyl group or an ethyl group; R3 represents a functional group having a straight chain including three or more carbon atoms and a hydroxyl group bonded to a terminal carbon; C represents a carbon atom; H represents a hydrogen atom; 0 represents an oxygen atom; and N represents a nitrogen atom.Type: ApplicationFiled: June 25, 2012Publication date: March 27, 2014Inventors: Seiji Takagi, Hideki Shimamoto, Hiroyuki Matsumura, Nao Matsumura
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Publication number: 20130314846Abstract: An electrochemical capacitor includes electrolytic solution, a capacitor element, and a housing. The electrolytic solution contains cations, anions, solvent formed of materials other than lactones, and a lactone component. The capacitor element includes a negative electrode, a positive electrode, and a separator. The negative electrode includes an electrode layer capable of storing the cations, and the positive electrode includes a polarizable electrode layer and confronts the negative electrode. The separator is disposed between the negative and positive electrodes, and they are layered or wound together. The capacitor element is impregnated with the electrolytic solution. The housing accommodates the capacitor element and the electrolytic solution that contains the lactone component in a quantity ranging from 0.001 wt % to 5 wt % (inclusive) relative to the solvent.Type: ApplicationFiled: August 2, 2013Publication date: November 28, 2013Applicant: Panasonic CorporationInventors: SHOTARO DOI, HIDEKI SHIMAMOTO, SUSUMU NOMOTO
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Publication number: 20130258553Abstract: A pair of electrodes are drawn out from a wound capacitor element by a pair of leads. Each of electrodes forming the capacitor element includes a sheet-like collector, an electrode layer formed on the surface of the collector, and an exposed part provided on one edge of the collector. The electrode layer is not formed on the exposed part. The pair of electrodes are wound such that the exposed parts come to both ends of the capacitor element. Two or more points of at least one of the exposed parts are connected together.Type: ApplicationFiled: March 13, 2013Publication date: October 3, 2013Applicant: PANASONIC CORPORATIONInventors: Teruhisa MIURA, Hideki SHIMAMOTO, Shusaku KAWASAKI
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Publication number: 20130163148Abstract: A negative electrode for an electrochemical capacitor includes a current collector having electric conductivity, and an electrode layer formed on a surface of the current collector and having cations stored therein. In at least a part of the electrode layer, a value of ratio Ia/Ib of peak value Ia indicating a presence of an anion decomposition compound and peak value Ib indicating a presence of an electrolyte in a spectrum of an atom forming the anion is 0.45 or more and less than 2.55 as measured using X-ray photoelectron spectroscopy.Type: ApplicationFiled: October 14, 2011Publication date: June 27, 2013Applicant: PANASONIC CORPORATIONInventors: Kiyohiro Isii, Hideki Shimamoto, Junko Fujisawa, Susumu Nomoto
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Publication number: 20130148267Abstract: A capacitor having an electrolyte solution, in which a sealing member has a gas barrier layer provided with lead holes and through holes, and a rubber material sandwiching the gas barrier layer. The gas barrier layer includes a material having lower gas permeability than the rubber material. The through holes are filled with the rubber material.Type: ApplicationFiled: September 8, 2011Publication date: June 13, 2013Applicant: PANASONIC CORPORATIONInventors: Norihisa Takahara, Hideki Shimamoto, Kiyoshi Hirota, Yuichiro Tsubaki
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Patent number: 8422199Abstract: The present invention provides an electrolyte highly reliable in charge and discharge in a high voltage condition, and an electrochemical capacitor using the same. The electrolyte of the present invention includes a solvent, an electrolyte salt having an anion having a perfluoro alkyl group represented by a following composition formula, and an acid inducing substance having a fluorine atom for an anion, characterized in that the weight ratio of the acid inducing substance is in a range of 0.0001 to 2.0 wt %: MX+[Q(Rf)yFz]X? (wherein Q is a group 13 or group 15 element in the periodic table, Rf is a perfluoro alkyl group (CnF2n+1), n is a natural number, 1?y<6, 1?z<6, MX+ is a cation of Xth valence, and X is a natural number from 1 to 3).Type: GrantFiled: February 15, 2010Date of Patent: April 16, 2013Assignee: Panasonic CorporationInventors: Shotaro Doi, Atsuro Shirakami, Kiyohiro Isii, Susumu Nomoto, Hideki Shimamoto