Patents by Inventor Takeru Yamamoto
Takeru Yamamoto 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: 20110250475Abstract: A battery pack includes: a battery having a main surface; and a resin layer capable of being integrated with an armor member armoring the battery so that at least a part of the main surface of the battery is exposed and covering the main surface of the battery, wherein the resin layer is formed by curing a reaction curable resin having a viscosity of not less than 80 mPa·second to less than 1000 mPa·second and a thickness of the resin layer on the main surface of the battery ranges from 0.05 mm to smaller than 0.4 mm.Type: ApplicationFiled: April 5, 2011Publication date: October 13, 2011Applicant: SONY CORPORATIONInventors: Takeru Yamamoto, Sachio Akahira, Toshinori Saito, Yasuhiro Oi, Nobuya Okano
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Patent number: 8007937Abstract: A battery pack is provided.Type: GrantFiled: December 1, 2006Date of Patent: August 30, 2011Assignee: Sony CorporationInventors: Kazuhito Hatta, Masato Sato, Tsuyoshi Sugiyama, Hiroyuki Yamada, Koji Sakai, Norio Mamada, Takeru Yamamoto, Kazuo Honda
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Patent number: 7919208Abstract: A battery capable of obtaining a high capacity and reducing its expansion is provided. A spirally wound electrode body formed through laminating a cathode and an anode with a separator and an electrolyte in between to form a laminate and spirally winding the laminate is included in a package member made of an aluminum laminate film. An anode active material layer includes an agglomerated graphite material in which a plurality of primary particles made of graphite having fine pores are agglomerated so that the orientation planes thereof are not parallel to each other, at least in part, to form secondary particles. In the agglomerated graphite material, the total volume of fine pores with a diameter from 10 nm to 1×105 nm inclusive estimated by mercury porosimetry ranges from 0.5 cm3/g to 1.5 cm3/g inclusive per unit weight.Type: GrantFiled: October 26, 2006Date of Patent: April 5, 2011Assignee: Sony CorporationInventors: Takeru Yamamoto, Tomoyuki Nakamura, Yuji Uchida, Yukifumi Takeda, Takehiko Suwa, Gentaro Kano, Takahiro Endo
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Publication number: 20100310911Abstract: A battery pack includes a plurality of batteries, each including a battery element formed by winding or stacking a positive electrode and a negative electrode with a separator therebetween, and a packaging material packaging the battery element; a connecting member that electrically connects the batteries to form a battery group; a holding unit that holds the batteries together; a protection circuit substrate connected to the battery group; and an outer packaging member that integrally covers the battery group and the protection circuit substrate, the outer packaging member being formed by filling a space in a molding die housing the battery group and the protection circuit substrate with a resin and curing the resin at a temperature of 100° C. or less.Type: ApplicationFiled: May 6, 2010Publication date: December 9, 2010Applicant: SONY CORPORATIONInventors: Takeru Yamamoto, Takehiko Tanaka, Masayuki Tohda, Tetsuya Makino, Kengo Ichimiya, Masafumi Umekawa
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Patent number: 7659035Abstract: A nonaqueous electrolyte secondary battery is provided. The nonaqueous electrolyte secondary battery includes a cathode; an anode containing at least an anode active material and a conductive agent; and a nonaqueous electrolyte, wherein the anode has an anode mixture, the anode mixture containing 1.5 wt % or more to 10 wt % or less aluminum oxide which has an average particle diameter of 0.1 ?m or more to 5.0 ?m or less.Type: GrantFiled: March 30, 2007Date of Patent: February 9, 2010Assignee: Sony CorporationInventors: Takeru Yamamoto, Takehiko Tanaka, Tomitaro Hara, Hirouki Akashi
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Publication number: 20090202918Abstract: A polymer electrolyte capable of obtaining superior discharge characteristics and a battery using it are provided. A cathode (21) and an anode (22) are wound with a separator (24) in between. After that, the wound body is contained inside a package member. Then, an electrolytic composition containing a solvent, polyvinyl acetal or the derivative thereof, and lithium hexafluorophosphate is added thereto. Polyvinyl acetal or the derivative thereof is polymerized by using lithium hexafluorophosphate as a catalyst. Thereby, a polymer electrolyte (23) is formed, and the discharge characteristics are improved.Type: ApplicationFiled: March 10, 2006Publication date: August 13, 2009Applicant: SONY CORPORATIONInventors: Yuji Uchida, Takahiro Endo, Tomoyuki Nakamura, Takeru Yamamoto, Takehiko Suwa, Yoshiaki Naruse
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Publication number: 20090191448Abstract: A battery pack includes: a battery including a battery element covered with a packaging member, the battery element including a positive electrode and a negative electrode which are spirally wound together or stacked on one another through a separator; a protection circuit board for the battery; and a covering material collectively covering the battery and the protection circuit board. The covering material includes a shape-retaining polymer. The shape-retaining polymer contains an insulating curable polyurethane resin including polyol and polyisocyanate.Type: ApplicationFiled: December 9, 2008Publication date: July 30, 2009Applicant: SONY CORPORATIONInventors: Takeru Yamamoto, Ken Segawa, Shunsuke Saito
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Publication number: 20090191456Abstract: A battery pack has a battery obtained by packing a battery element with a packing member. The battery element is formed by winding or laminating an anode and a cathode through separators. The battery pack includes frame member surrounding the packing member packing the battery element and a coating layer constituted of a curable resin formed on surfaces of the packing member which are surrounded and demarcated by the frame member.Type: ApplicationFiled: January 28, 2009Publication date: July 30, 2009Applicant: Sony CorporationInventors: Takeru Yamamoto, Ken Segawa, Toshiro Endo, Masaru Hiratsuka
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Publication number: 20090098443Abstract: A battery pack includes a battery including a battery element covered with a packaging member, a battery protection circuit board, a covering material, and a rippable portion formed in a part of the covering material. The battery element includes a positive electrode and a negative electrode which are spirally wound or stacked through a separator. The covering material collectively covers the battery and the battery protection circuit board. The rippable portion rips open due to a gas generated from the battery in the event of an abnormal condition to form a gas release hole for releasing the gas outside the battery pack.Type: ApplicationFiled: October 10, 2008Publication date: April 16, 2009Applicant: Sony CorporationInventors: Takeru Yamamoto, Ken Segawa, Hiroyuki Akashi, Takayuki Aita, Shunsuke Saito
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Publication number: 20090053593Abstract: A battery capable of suppressing the swollenness and improving the capacity and the like is provided. The battery includes a spirally wound electrode body (20) in which a cathode and an anode are layered with a separator and an electrolyte in between and spirally wound inside a package member (30) made of an aluminum laminated film. The cathode or the anode contains, as an absorber, a graphite material in which an average face distance d002 of (002) planes of a hexagonal crystal obtained by X-ray diffraction method is from 0.3354 nm to 0.3370 nm, and a peak belonging to a (101) plane of a rhombohedral crystal can be obtained by the X-ray diffraction method. Thereby, gas can be absorbed and thus swollenness can be suppressed. In addition, the battery characteristics such as the capacity can be improved.Type: ApplicationFiled: February 14, 2006Publication date: February 26, 2009Applicant: SONY CORPORATIONInventors: Takeru Yamamoto, Tomoyuki Nakamura, Yuji Uchida, Saori Tokuoka, Takahiro Endo
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Patent number: 7414827Abstract: Disclosed is a gas-insulated switchgear device, in which a space for dismantlement and inspection work which facilitates the dismantlement and inspection work of circuit breakers at the time of the occurrence of accidents of the circuit breakers are provided and an installation area for the gas-insulated switchgear device can be reduced. The gas-insulated switchgear device includes a pair of spaced apart main bus lines, three circuit breakers connected between the main bus lines, a common space for dismantlement and inspection work provided between two of the three circuit breakers, and branch bus lines provided above the common dismantlement and inspection work space using the common dismantlement and inspection work space and disposed in such a manner that insulatedly leading-out directions of the branch bus lines cross in order to balance voltage.Type: GrantFiled: December 26, 2006Date of Patent: August 19, 2008Assignee: Japan AE Power Systems CorporationInventors: Takayuki Kashiwa, Ryoichi Shinohara, Takeru Yamamoto, Yoshiro Suzuki
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Publication number: 20070298322Abstract: A nonaqueous electrolyte secondary battery is provided. The nonaqueous electrolyte secondary battery includes a cathode; an anode containing at least an anode active material and a conductive agent; and a nonaqueous electrolyte, wherein the anode has an anode mixture, the anode mixture containing 1.5 wt % or more to 10 wt % or less aluminum oxide which has an average particle diameter of 0.1 ?m or more to 5.0 ?m or less.Type: ApplicationFiled: March 30, 2007Publication date: December 27, 2007Applicant: SONY CORPORATIONInventors: Takeru Yamamoto, Takehiko Tanaka, Tomitaro Hara, Hirouki Akashi
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Patent number: 7311996Abstract: The present invention relates to a non-aqueous electrolyte secondary battery in which a spirally coiled battery element obtained by spirally coiling an anode (3) and a cathode (2) through a separator (4) is accommodated in a battery can (5) filled with a non-aqueous electrolyte. A fluoride MFn (M indicates at least one metal selected from between Cu, Ni, Ag, Ti, Sn and Cr, and n is an integer.) is included in the anode before an initial charging operation, and assuming that the initial charging capacity of the battery is Q [mAh] and a Faraday constant is F [C/mol], an amount m [mol] of the fluoride MFn included in the anode is located within a range represented by the following expression 0.0036 Q/nF?m?0.36 Q/nF.Type: GrantFiled: January 28, 2003Date of Patent: December 25, 2007Assignee: Sony CorporationInventors: Hidetoshi Ito, Yoshiaki Naruse, Takeru Yamamoto
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Publication number: 20070224510Abstract: An anode and a battery capable of improving conductivity in spite of reducing the ratio of a binder are provided. A cathode and an anode face each other with a separator and an electrolyte in between. The anode includes an anode current collector and an anode active material layer arranged on the anode current collector. The anode active material layer includes an anode active material, a binder and a member including at least one kind selected from the group consisting of nickel, iron and a nickel compound or an iron compound. The content of the binder in the anode active material layer is within a range from 0.5 wt % to 5.0 wt %, both inclusive.Type: ApplicationFiled: March 26, 2007Publication date: September 27, 2007Applicant: SONY CORPORATIONInventors: Takeru Yamamoto, Yosuke Ushio, Takehiko Tanaka, Tomitaro Hara, Hiroyuki Akashi
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Publication number: 20070153449Abstract: Disclosed is a gas-insulated switchgear device, in which a space for dismantlement and inspection work which facilitates the dismantlement and inspection work of circuit breakers at the time of the occurrence of accidents of the circuit breakers are provided and an installation area for the gas-insulated switchgear device can be reduced. The gas-insulated switchgear device includes a pair of spaced apart main bus lines, three circuit breakers connected between the main bus lines, a common space for dismantlement and inspection work provided between two of the three circuit breakers, and branch bus lines provided above the common dismantlement and inspection work space using the common dismantlement and inspection work space and disposed in such a manner that insulatedly leading-out directions of the branch bus lines cross in order to balance voltage.Type: ApplicationFiled: December 26, 2006Publication date: July 5, 2007Inventors: Takayuki KASHIWA, Ryoichi Shinohara, Takeru Yamamoto, Yoshiro Suzuki
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Patent number: 7229713Abstract: Provided are an electrode and a battery having superior charge-discharge cycle characteristics and capable of obtaining a higher energy density. The battery comprises a spirally wound electrode body (20) including a cathode (21) and an anode (22) spirally wound with a separator (23) in between. During charge, lithium metal is precipitated on the anode (22), so the capacity of the anode (22) is represented by the sum of a capacity component by insertion and extraction of lithium and a capacity component by precipitation and dissolution of the lithium metal. The anode (22) includes a mixture layer (22b) having a powdered anode active material, and the mixture layer (22b) has liquid absorption properties that when 1 ?dm3 of propylene carbonate is dropped on the mixture layer (22b) at 23° C., a contact angle that the mixture layer (22b) forms with a propylene carbonate drop becomes 10 degrees within 100 seconds.Type: GrantFiled: June 18, 2003Date of Patent: June 12, 2007Assignee: Sony CorporationInventors: Takeru Yamamoto, Gentaro Kano, Hiroyuki Akashi
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Publication number: 20070128513Abstract: A battery pack is provided.Type: ApplicationFiled: December 1, 2006Publication date: June 7, 2007Applicant: Sony CorporationInventors: Kazuhito Hatta, Masato Sato, Tsuyoshi Sugiyama, Hiroyuki Yamada, Koji Sakai, Norio Mamada, Takeru Yamamoto, Kazuo Honda
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Publication number: 20070117015Abstract: A battery capable of obtaining a high capacity and reducing its expansion is provided. A spirally wound electrode body formed through laminating a cathode and an anode with a separator and an electrolyte in between to form a laminate and spirally winding the laminate is included in a package member made of an aluminum laminate film. An anode active material layer includes an agglomerated graphite material in which a plurality of primary particles made of graphite having fine pores are agglomerated so that the orientation planes thereof are not parallel to each other, at least in part, to form secondary particles. In the agglomerated graphite material, the total volume of fine pores with a diameter from 10 nm to 1×105 nm inclusive estimated by mercury porosimetry ranges from 0.5 cm3/g to 1.5 cm3/g inclusive per unit weight.Type: ApplicationFiled: October 26, 2006Publication date: May 24, 2007Applicant: Sony CorporationInventors: Takeru Yamamoto, Tomoyuki Nakamura, Yuji Uchida, Yukifumi Takeda, Takehiko Suwa, Gentaro Kano, Takahiro Endo
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Publication number: 20050079421Abstract: The invention provides an anode capable of improving battery characteristics such as cycle characteristics and a battery using it. An anode current collector is provided with an anode active material layer. The anode active material layer contains at least one from the group consisting of simple substances, alloys, and compounds of silicon or the like capable of forming an alloy with Li. Further, the anode active material layer is formed by vapor-phase deposition method or the like, and is alloyed with the anode current collector. Further, Li of from 0.5% to 40% of an anode capacity is previously inserted in the anode active material layer. Therefore, when Li is consumed due to reaction with an electrolyte or the like, Li can be refilled, and potential raise of the anode can be inhibited in the final stage of discharge.Type: ApplicationFiled: September 8, 2004Publication date: April 14, 2005Inventors: Isamu Konishiike, Takeru Yamamoto, Tomoo Takada, Kenichi Kawase, Yukio Miyaki
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Publication number: 20040185341Abstract: Provided are an electrode and a battery having superior charge-discharge cycle characteristics and capable of obtaining a higher energy density. The battery comprises a spirally wound electrode body (20) including a cathode (21) and an anode (22) spirally wound with a separator (23) in between. During charge, lithium metal is precipitated on the anode (22), so the capacity of the anode (22) is represented by the sum of a capacity component by insertion and extraction of lithium and a capacity component by precipitation and dissolution of the lithium metal. The anode (22) includes a mixture layer (22b) having a powdered anode active material, and the mixture layer (22b) has liquid absorption properties that when 1 &mgr;dm3 of propylene carbonate is dropped on the mixture layer (22b) at 23° C., a contact angle that the mixture layer (22b) forms with a propylene carbonate drop becomes 10 degrees within 100 seconds.Type: ApplicationFiled: February 6, 2004Publication date: September 23, 2004Inventors: Takeru Yamamoto, Gentaro Kano, Hiroyuki Akashi