Patents by Inventor Fumihiro Miki
Fumihiro Miki 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: 10998543Abstract: A roll electrode is provided with a core, an electrode, a fixing part and a regulating part. The core extends in an axial direction and has a substantially circular outer circumference. The electrode has an expansion coefficient lower than that of the core. The electrode wound into a roll shape on the outer circumference of the core. The fixing part is fixed to an end portion from which the electrode starts being wound around the core. The regulating part regulates the axial movement of the electrode wound into the roll shape with respect to the core.Type: GrantFiled: October 29, 2018Date of Patent: May 4, 2021Assignee: Envision AESC Japan Ltd.Inventors: Masanobu Sato, Tsuyoshi Kudo, Ikuma Matsuzaki, Yusuke Sasaki, Kazuki Miyatake, Kenta Uwai, Yuta Sadakata, Shigeo Komatsu, Fumihiro Miki
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Patent number: 10818920Abstract: A negative electrode active material having high cycle durability contains an alloy represented by the following chemical formula (1): SixSnyMzAa??(1) wherein M is Zn, A is unavoidable impurities, x, y, z, and a represent % by mass values, and in that case, 0<x<100, 0<y<100, 0<z<100, 0?a<0.5, and x+y+z+a=100, in which the half width of the diffraction peak of the (111) surface of Si in the range of 2?=24 to 33° by X ray diffraction measurement of the alloy using CuK? ray is 0.7° or more, and the x is more than 23 and less than 64, the y is 4 or more and less than 34, and the z is more than 0 and less than 65.Type: GrantFiled: March 12, 2019Date of Patent: October 27, 2020Assignee: Nissan Motor Co., Ltd.Inventors: Fumihiro Miki, Manabu Watanabe, Nobutaka Chiba, Kei Kitaura, Tohru Wada
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Patent number: 10566608Abstract: The negative electrode for an electric device includes a current collector and an electrode layer containing a negative electrode active material, a conductive auxiliary agent and a binder and formed on a surface of the current collector, wherein the negative electrode active material contains an alloy represented by the following formula (1): SixSnyMzAa (in the formula (1), M is at least one metal selected from the group consisting of Al, V, C and a combination thereof, A is inevitable impurities, and x, y, z and a represent mass percent values and satisfy the conditions of 0<x<100, 0<y<100, 0<z<100, 0?a<0.5, and x+y+z+a=100), and elastic elongation of the current collector is 1.30% or greater.Type: GrantFiled: November 19, 2013Date of Patent: February 18, 2020Assignee: NISSAN MOTOR CO., LTD.Inventors: Fumihiro Miki, Manabu Watanabe, Kensuke Yamamoto, Takashi Sanada, Nobutaka Chiba
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Patent number: 10529981Abstract: A roll electrode is provided with a core, an electrode, a fixing part and a regulating part. The core extends in an axial direction and has an outer circumference that is substantially circular. The electrode has an expansion coefficient lower than that of the core. The electrode wound into a roll shape on the outer circumference of the core. The fixing part is provided for fixing an end portion from which the electrode starts being wound around the core. The regulating part is provided for regulating the axial movement of the electrode wound into the roll shape with respect to the core.Type: GrantFiled: July 15, 2015Date of Patent: January 7, 2020Assignee: Envision AESC Japan Ltd.Inventors: Masanobu Sato, Tsuyoshi Kudo, Ikuma Matsuzaki, Yusuke Sasaki, Kazuki Miyatake, Kenta Uwai, Yuta Sadakata, Shigeo Komatsu, Fumihiro Miki
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Publication number: 20190214643Abstract: A negative electrode active material having high cycle durability contains an alloy represented by the following chemical formula (1): SixSnyMzAa??(1) wherein M is Zn, A is unavoidable impurities, x, y, z, and a represent % by mass values, and in that case, 0<x<100, 0<y<100, 0<z<100, 0?a<0.5, and x+y+z+a=100, in which the half width of the diffraction peak of the (111) surface of Si in the range of 2?=24 to 33° by X ray diffraction measurement of the alloy using CuK? ray is 0.7° or more, and the x is more than 23 and less than 64, the y is 4 or more and less than 34, and the z is more than 0 and less than 65.Type: ApplicationFiled: March 12, 2019Publication date: July 11, 2019Inventors: Fumihiro Miki, Manabu Watanabe, Nobutaka Chiba, Kei Kitaura, Tohru Wada
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Patent number: 10290855Abstract: A negative electrode for an electrical device includes: a current collector; and an electrode layer containing a negative electrode active material, an electrically-conductive auxiliary agent and a binder and formed on a surface of the current collector, wherein the negative electrode active material contains an alloy represented by a following formula (1): SixZnyMzAa (in the formula (1) M is at least one metal selected from the group consisting of V, Sn, Al, C and combinations thereof, A is inevitable impurity, and x, y, z and a represent mass percent values and satisfy 0<x<100, 0<y<100, 0<z<100, 0?a<0.5 and x+y+z+a=100), and elongation (?) of the electrode layer is 1.29<?<1.70%.Type: GrantFiled: November 19, 2013Date of Patent: May 14, 2019Assignee: NISSAN MOTOR CO., LTD.Inventors: Kensuke Yamamoto, Manabu Watanabe, Fumihiro Miki, Takashi Sanada, Nobutaka Chiba
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Patent number: 10290867Abstract: A negative electrode active material having high cycle durability contains an alloy represented by the following chemical formula (1): SixSnyMzAa??(1) (in the chemical formula (1), M is at least one metal selected from the group consisting of Ti, Zn, C, and combinations thereof, A is unavoidable impurities, x, y, z, and a represent % by mass values, and in that case, 0<x<100, 0<y<100, 0<z<100, 0?a<0.5, and x+y+z+a=100), in which the half width of the diffraction peak of the (111) surface of Si in the range of 2?=24 to 33° by X ray diffraction measurement of the alloy using the CuK? ray is 0.7° or more.Type: GrantFiled: May 19, 2014Date of Patent: May 14, 2019Assignee: Nissan Motor Co., Ltd.Inventors: Fumihiro Miki, Manabu Watanabe, Nobutaka Chiba, Kei Kitaura, Tohru Wada
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Publication number: 20190067683Abstract: A roll electrode is provided with a core, an electrode, a fixing part and a regulating part. The core extends in an axial direction and has a substantially circular outer circumference. The electrode has an expansion coefficient lower than that of the core. The electrode wound into a roll shape on the outer circumference of the core. The fixing part is fixed to an end portion from which the electrode starts being wound around the core. The regulating part regulates the axial movement of the electrode wound into the roll shape with respect to the core.Type: ApplicationFiled: October 29, 2018Publication date: February 28, 2019Inventors: Masanobu SATO, Tsuyoshi KUDO, Ikuma MATSUZAKI, Yusuke SASAKI, Kazuki MIYATAKE, Kenta UWAI, Yuta SADAKATA, Shigeo KOMATSU, Fumihiro MIKI
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Publication number: 20180212230Abstract: A roll electrode is provided with a core, an electrode, a fixing part and a regulating part. The core extends in an axial direction and has an outer circumference that is substantially circular. The electrode has an expansion coefficient lower than that of the core. The electrode wound into a roll shape on the outer circumference of the core. The fixing part is provided for fixing an end portion from which the electrode starts being wound around the core. The regulating part is provided for regulating the axial movement of the electrode wound into the roll shape with respect to the core.Type: ApplicationFiled: July 15, 2015Publication date: July 26, 2018Inventors: Masanobu SATO, Tsuyoshi KUDO, Ikuma MATSUZAKI, Yusuke SASAKI, Kazuki MIYATAKE, Kenta UWAI, Yuta SADAKATA, Shigeo KOMATSU, Fumihiro MIKI
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Publication number: 20160285088Abstract: The negative electrode for an electric device includes a current collector and an electrode layer containing a negative electrode active material, a conductive auxiliary agent and a binder and formed on a surface of the current collector, wherein the negative electrode active material contains an alloy represented by the following formula (1): SixTiyMzAa (in the formula (1), M is at least one metal selected from the group consisting of Ge, Sn, Zn and a combination thereof, A is inevitable impurities, and x, y, z and a represent mass percent values and satisfy the conditions of 0<x<100, 0<y<100, 0<z<100, 0?a<0.5, and x+y+z+a=100), and elastic elongation of the current collector is 1.30% or greater.Type: ApplicationFiled: November 19, 2013Publication date: September 29, 2016Applicant: NISSAN MOTOR CO., LTD.Inventors: Manabu WATANABE, Fumihiro MIKI, Takashi SANADA, Nobutake CHIBA
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Publication number: 20160285076Abstract: A negative electrode for an electrical device includes: a current collector; and an electrode layer containing a negative electrode active material, an electrically-conductive auxiliary agent and a binder and formed on a surface of the current collector, wherein the negative electrode active material contains an alloy represented by a following formula (1): SixZnyMzAa (in the formula (1) M is at least one metal selected from the group consisting of V, Sn, Al, C and combinations thereof, A is inevitable impurity, and x, y, z and a represent mass percent values and satisfy 0<x<100, 0<y<100, 0<z<100, 0?a<0.5 and x+y+z+a=100), and elongation (?) of the electrode layer is 1.29<?<1.70%.Type: ApplicationFiled: November 19, 2013Publication date: September 29, 2016Applicant: NISSAN MOTOR CO., LTD.Inventors: Kensuke YAMAMOTO, Manabu WATANABE, Fumihiro MIKI, Takashi SANADA, Nobutaka CHIBA
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Publication number: 20160285077Abstract: The negative electrode for an electric device includes a current collector and an electrode layer containing a negative electrode active material, a conductive auxiliary agent and a binder and formed on a surface of the current collector, wherein the negative electrode active material contains an alloy represented by the following formula (1): SixSnyMzAa (in the formula (1), M is at least one metal selected from the group consisting of Al, V, C and a combination thereof, A is inevitable impurities, and x, y, z and a represent mass percent values and satisfy the conditions of 0<x<100, 0<y<100, 0<z<100, 0?a<0.5, and x+y+z+a=100), and elastic elongation of the current collector is 1.30% or greater.Type: ApplicationFiled: November 19, 2013Publication date: September 29, 2016Applicant: NISSAN MOTOR CO., LTD.Inventors: Fumihiro MIKI, Manabu WATANABE, Kensuke YAMAMOTO, Takashi SANADA, Nobutaka CHIBA
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Publication number: 20160141613Abstract: A negative electrode active material having high cycle durability contains an alloy represented by the following chemical formula (1): SixSnyMzAa??(1) (in the chemical formula (1), M is at least one metal selected from the group consisting of Ti, Zn, C, and combinations thereof, A is unavoidable impurities, x, y, z, and a represent % by mass values, and in that case, 0<x<100, 0<y<100, 0<z<100, 0?a<0.5, and x+y+z+a=100), in which the half width of the diffraction peak of the (111) surface of Si in the range of 2?=24 to 33° by X ray diffraction measurement of the alloy using the CuK? ray is 0.7° or more.Type: ApplicationFiled: May 19, 2014Publication date: May 19, 2016Applicant: Nissan Motor Co., Ltd.Inventors: Fumihiro MIKI, Manabu WATANABE, Nobutaka CHIBA, Kei KITAURA, Tohru WADA
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Publication number: 20150311517Abstract: [TECHNICAL PROBLEM] To provide a negative electrode for an electric device such as a Li ion secondary battery, which shows good balanced characteristics where Initial capacity is high while maintaining high cycle characteristics. [SOLUTION TO PROBLEM] The negative electrode for an electric device includes: a current collector; and an electrode layer containing a negative electrode active material, an electrically-conductive auxiliary agent and a binder and formed on a surface of the current collector. The negative electrode active material is a mixture of a carbon material and an alloy represented by the following formula (1): SixZnyMzAa ??(1) (in formula (1), M is at least one of metal selected from the group consisting of V, Sn, Al, C, and combinations thereof, A is inevitable impurity, and x, y, z and a represent mass percent values and satisfy 0<x<100, 0<y<100, 0<z<100, and 0<a<0.5, and x+y+z+a=100).Type: ApplicationFiled: November 19, 2013Publication date: October 29, 2015Applicant: NISSAN MOTOR CO., LTD.Inventors: Kensuke YAMAMOTO, Manabu WATANABE, Fumihiro MIKI, Takashi SANADA, Nobutaka CHIBA
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Publication number: 20150311500Abstract: The negative electrode for an electric device includes a current collector and an electrode layer containing a negative electrode active material, an electrically-conductive auxiliary agent and a binder and formed on a surface of the current collector, wherein the negative electrode active material contains an alloy represented by the following formula (1): SixSnyMzAa (in the formula (1), M is at least one metal selected from the group consisting of Al, V, C and a combination thereof, A is inevitable impurities, and x, y, z and a represent mass percent values and satisfy the conditions of 0<x<100, 0<y<100, 0<z<100, 0?a<0.5, and x+y+z+a=100), and the binder contains a resin having an E elastic modulus of greater than 1.00 GPa and less than 7.40 GPa.Type: ApplicationFiled: November 19, 2013Publication date: October 29, 2015Applicant: NISSAN MOTOR CO., LTD.Inventors: Fumihiro MIKI, Manabu WATANABE, Kensuke YAMAMOTO, Takashi SANADA, Nobutaka CHIBA
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Publication number: 20150303455Abstract: The negative electrode for an electric device includes: a current collector; and an electrode layer containing a negative electrode active material, an electrically-conductive auxiliary agent and a binder and formed on a surface of the current collector. The negative electrode active material is a mixture of a carbon material and an alloy expressed by formula (1): SixTiyMzAa . . . (1) (in formula (1), M is at least one metal selected from the group consisting of Ge, Sn, Zn, and combinations thereof, A is inevitable impurity, and x, y, z, and a represent mass percent values and satisfy 0<x<100, 0<y<100, 0<z<100, and 0?a<0.5, x+y+z+a=100).Type: ApplicationFiled: November 19, 2013Publication date: October 22, 2015Applicant: NISSAN MOTOR CO., LTD.Inventors: Manabu WATANABE, Fumihiro MIKI, Takashi SANADA, Nobutaka CHIBA
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Publication number: 20150303465Abstract: The negative electrode for an electric device includes a current collector and an electrode layer containing a negative electrode active material, an electrically-conductive auxiliary agent and a binder and formed on a surface of the current collector, wherein the negative electrode active material contains an alloy represented by the following formula (1): SixTiyMzAa (in the formula (1), M is at least one metal selected from the group consisting of Ge, Sn, Zn and a combination thereof, A is inevitable impurities, and x, y, z and a represent mass percent values and satisfy the conditions of 0<x<100, 0<y<100, 0<z<100, 0?a<0.5, and x+y+z+a=100), and the binder contains a resin having an E elastic modulus of greater than 1.00 GPa and less than 7.40 GPa.Type: ApplicationFiled: November 19, 2013Publication date: October 22, 2015Applicant: NISSAN MOTOR CO., LTD.Inventors: Manabu WATANABE, Fumihiro MIKI, Takashi SANADA, Nobutaka CHIBA
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Publication number: 20150303464Abstract: A negative electrode for an electrical device includes: a current collector; and an electrode layer containing a negative electrode active material, an electrically-conductive auxiliary agent and a binder and formed on a surface of the current collector, wherein the negative electrode active material contains an alloy represented by a following formula (1): SixTiyMzAa (in the formula (1) M is at least one metal selected from the group consisting of Ge, Sn, Zn and combinations thereof. A is inevitable impurity, and x, y, z and a represent mass percent values and satisfy 0<x<100, 0<y<100, 0<z<100, 0?a<0.5 and x+y+z+a=100), and elongation (?) of the electrode layer is 1.29<?<1.70%.Type: ApplicationFiled: November 19, 2013Publication date: October 22, 2015Applicant: NISSAN MOTOR CO., LTD,Inventors: Manabu WATANABE, Fumihiro MIKI, Takashi SANADA, Nobutaka CHIBA
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Publication number: 20150303466Abstract: The negative electrode for an electric device includes a current collector and an electrode layer containing a negative electrode active material, a conductive auxiliary agent and a binder and formed on a surface of the current collector, wherein the negative electrode active material contains an alloy represented by the following formula (1): SixZnyMzAa (in the formula (1), M is at least one metal selected from the group consisting of V, Sn, Al, C and a combination thereof, A is inevitable impurities, and x, y, z and a represent mass percent values and satisfy the conditions of 0<x<100, 0<y<100, 0<z<100, 0?a<0.5, and x+y+z+a=100), and elongation (?) in the electrode layer satisfies 1.29%<?<1.70%.Type: ApplicationFiled: November 19, 2013Publication date: October 22, 2015Applicant: NISSAN MOTOR CO., LTD.Inventors: Kensuke Yamamoto, Manabu WATANABE, Fumihiro MIKI, Takashi SANADA, Nobutaka CHIBA
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Publication number: 20150303451Abstract: The negative electrode for an electric device includes: a current collector; and an electrode layer containing a negative electrode active material, an electrically-conductive auxiliary agent and a binder and formed on a surface of the current collector. The negative electrode active material is a mixture of a carbon material and an alloy represented by the following formula (1): SixSnyMzAa . . . (1) (in formula (1), M is at least one metal selected from the group consisting of Al, V, C, and combinations thereof, A is inevitable impurity, x, y, z, and a represent mass percent values and satisfy 0<x<100, 0<y<100, 0<z<100, and 0?a<0.5, x+y+z+a=100).Type: ApplicationFiled: November 19, 2013Publication date: October 22, 2015Applicant: NISSAN MOTOR CO., LTD.Inventors: Fumihiro MIKI, Manabu WATANABE, Kensuke YAMAMOTO, Takashi SANADA, Nobutaka CHIBA