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公开(公告)号：US20150093647A1
公开(公告)日：2015-04-02
申请号：US14497823
申请日：2014-09-26
Applicant: GS Yuasa International Ltd.
Inventor： Tomonori KAKO , Sumio MORI , Akihiko MIYAZAKI , Kenta NAKAI
IPC: H01M4/583 , H01M4/525 , H01M10/052 , H01M4/505
CPC classification number: H01M4/583 , H01M4/131 , H01M4/133 , H01M4/505 , H01M4/525 , H01M4/587 , H01M10/052 , H01M10/0525 , H01M10/0567 , H01M2004/021 , H01M2220/20 , Y02T10/7011
Abstract: A battery includes a positive electrode, a negative electrode including a negative active material layer containing hardly-graphitizable carbon as a negative active material and an aqueous binder, a separator disposed between the positive electrode and the negative electrode, and a nonaqueous electrolyte. The negative active material layer has a density of not less than 0.81 g/cc and not more than 1.01 g/cc. The negative active material has a particle size D90 of not less than 1.9 μm and not more than 11.5 μm, the particle size D90 being a particle size at which the cumulative volume is 90% in the particle size distribution.
Abstract translation: 电池包括正电极，负极包括含有难以石墨化的碳作为负极活性物质的负极活性物质层和水性粘合剂，设置在正极和负极之间的隔板和非水电解质。 负极活性物质层的密度不小于0.81g / cc且不大于1.01g / cc。 负极活性物质的粒径D90为1.9μm以上11.5μm以下，粒径D90为粒径分布中累积体积为90％的粒径。
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公开(公告)号：US20150092320A1
公开(公告)日：2015-04-02
申请号：US14497781
申请日：2014-09-26
Applicant: GS Yuasa International Ltd.
Inventor： Akihiko MIYAZAKI , Sumio MORI , Tomonori KAKO , Kenta NAKAI
CPC classification number: H01G9/042 , H01G9/0425 , H01G9/15 , H01M4/505 , H01M4/525 , H01M4/667 , H01M10/0525 , H01M2004/021 , H01M2220/20 , Y02E60/122 , Y02T10/7011
Abstract: An electric storage device having a positive electrode, a negative electrode, a separator located between the positive electrode and the negative electrode, and a nonaqueous electrolyte. The positive electrode has a positive substrate layer, a positive composite layer containing a positive active material, and an undercoat layer located between the positive substrate layer and the positive composite layer. A density of the positive composite layer is 2.1 g/cm3 or more and 2.7 g/cm3 or less. The positive electrode has the rate of increase in sheet resistance after a solvent immersion test of 30% or less. The undercoat layer contains a binder selected from the group consisting of chitosan derivatives, cellulose derivatives and acrylic acid derivatives.
Abstract translation: 具有正极，负极，位于正极和负极之间的隔膜的非蓄电装置以及非水电解质。 该正电极具有正的衬底层，含有正极活性材料的正性复合层，以及位于正性衬底层和正性复合层之间的底涂层。 正极复合层的密度为2.1g / cm 3以上且2.7g / cm 3以下。 正极在溶剂浸渍试验后的薄层电阻增加率为30％以下。 底涂层含有选自壳聚糖衍生物，纤维素衍生物和丙烯酸衍生物的粘合剂。
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Patent Agency Ranking
公开(公告)号：US20190131080A1
公开(公告)日：2019-05-02
申请号：US16095613
申请日：2017-04-25
Applicant: GS Yuasa International Ltd.
Inventor： Kazuki KAWAGUCHI , Akihiko MIYAZAKI , Sumio MORI
CPC classification number: H01G11/24 , H01G11/28 , H01G11/70 , H01G11/86 , H01M4/13 , H01M4/139 , H01M4/66 , H01M4/661
Abstract: An energy storage device is provided in which a decrease in power caused by repetitive charge-discharge in a high-temperature environment is suppressed. In the present embodiment, an energy storage device and a method for manufacturing the energy storage device are provided, the energy storage device including an electrode which includes: an active material layer including a particulate active material; and a conductive layer layered on the active material layer and including a conduction aid. An average secondary particle diameter of the active material is 2.5 μm or more and 6.0 μm or less. A surface roughness Ra of the conductive layer on a side on the active material layer is 0.17 μm or more and 0.50 μm or less.
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公开(公告)号：US20190027753A1
公开(公告)日：2019-01-24
申请号：US16069929
申请日：2017-01-13
Applicant: GS Yuasa International Ltd.
Inventor： Shota ITO , Kenta NAKAI , Akihiko MIYAZAKI , Tomonori KAKO , Sumio MORI
IPC: H01M4/587 , H01M10/0525
Abstract: An energy storage device of which endurance capacity retention ratio is improved is provided.An energy storage device 10 includes: a positive electrode plate 12 containing a positive composite layer including a positive active material capable of occluding and releasing a lithium ion; and a negative electrode plate 13 containing a negative composite layer including a negative active material capable of occluding and releasing a lithium ion. A peak pore diameter Rp of the positive composite layer in a pore distribution measured by a mercury penetration method is 0.5 μm or less, and a peak pore diameter Rn of the negative composite layer in a pore distribution measured by a mercury penetration method is 0.5 μm or less. A ratio Rp/Rn of the peak pore diameter of the positive composite layer to the peak pore diameter of the negative composite layer is 0.60 or more and 1.70 or less.
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公开(公告)号：US20160276702A1
公开(公告)日：2016-09-22
申请号：US15068915
申请日：2016-03-14
Applicant: GS Yuasa International Ltd.
Inventor： Kenta NAKAI , Tomonori KAKO , Akihiko MIYAZAKI , Sumio MORI
Abstract: An energy storage device includes: an electrode assembly which includes: an approximately rectangular positive electrode; an approximately rectangular negative electrode which is stacked alternately with the positive electrode; and a strip-like elongated separator having a base material layer and an inorganic layer which is made to overlap with the first base material layer, wherein the elongated separator is arranged between the positive electrode and the negative electrode, and the base material layer of the elongated separator faces the negative electrode in an opposed manner between the positive electrode and the negative electrode.
Abstract translation: 能量存储装置包括：电极组件，其包括：近似矩形的正极; 与正极交替堆叠的近似矩形的负极; 以及具有基材层和与第一基材层重叠的无机层的条状细长隔板，其中，所述细长隔板布置在所述正极和所述负极之间，并且所述基材层 细长隔板在正极和负极之间以相对的方式面对负极。
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16.发明申请公开(公告)号：US20160093860A1
公开(公告)日：2016-03-31
申请号：US14863927
申请日：2015-09-24
Applicant: GS Yuasa International Ltd.
Inventor： Akihiko MIYAZAKI , Sumio MORI , Tomonori KAKO
CPC classification number: H01M2/1686 , H01M2/145 , H01M4/133 , H01M4/587 , H01M10/0525 , H01M10/058 , Y02T10/7011
Abstract: An energy storage device includes a positive electrode provided with a positive composite layer containing a positive active material, a negative electrode provided with a negative composite layer containing a negative active material, and a separator partitioning between the positive electrode and the negative electrode, wherein the separator includes a substrate uniaxially drawn into a sheet shape and a coating layer coating at least one of surfaces of the substrate, and the coating layer has an anisotropic structure with orientation in a direction different from a drawing direction of the substrate.
Abstract translation: 储能装置包括：正极，其具有含有正极活性物质的正性复合层，负极具有含有负极活性物质的负极复合层，以及在正极和负极之间形成隔板; 分离器包括单轴拉伸成片状的基板和涂覆基板的至少一个表面的涂层，并且涂层具有沿与基板的拉伸方向不同的方向的取向的各向异性结构。
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公开(公告)号：US20140370393A1
公开(公告)日：2014-12-18
申请号：US14306048
申请日：2014-06-16
Applicant: GS Yuasa International Ltd.
Inventor： Kenta Nakai , Akihiko MIYAZAKI , Tomonori KAKO , Sumio MORI
CPC classification number: H01G11/26 , H01G11/06 , H01G11/32 , H01M4/13 , H01M4/133 , H01M4/587 , H01M4/64 , H01M4/70 , H01M10/052 , H01M10/0525 , H01M10/425 , H01M2004/021 , H01M2220/20 , Y02E60/122
Abstract: Provided is an energy storage device provided with a negative electrode including a negative substrate having a surface, and a negative composite layer formed on the surface of the negative substrate and including a negative active material; a positive electrode including a positive substrate, and a positive composite layer formed on the positive substrate and including a positive active material; and a separator placed between the positive electrode and the negative electrode. 10% cumulative diameter D10 in the particle size distribution of the negative active material on a volume basis is 1.3 μm or more, and 90% cumulative diameter D90 in the particle size distribution of the negative active material on a volume basis is 8.9 μm or less. The surface of the negative substrate has a center line roughness Ra of 0.205 μm or more and 0.781 μm or less, and has a center line roughness Ra to a ten-point mean height Rz of 0.072 or more and 0.100 or less.
Abstract translation: 本发明提供一种能量存储装置，其具备包括具有表面的负极基板的负极和在负极基板的表面上形成有负极活性物质的负极复合层， 包括正极基板的正极和在正极基板上形成并包含正极活性材料的正极复合层; 以及设置在正极和负极之间的隔膜。 负极活性物质的体积基准粒径分布中的10％累积粒径D10为1.3μm以上，负极活性物质的体积基准粒径分布的90％累积粒径D90为8.9μm以下 。 负极基板的表面的中心线粗糙度Ra为0.205μm以上且0.781μm以下，中心线粗糙度Ra为十点平均高度Rz为0.072以上且0.100以下。
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