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    LITHIUM ION SECONDARY BATTERY AND MANUFACTURING METHOD OF THE LITHIUM ION SECONDARY BATTERY
    1.
    发明申请
    LITHIUM ION SECONDARY BATTERY AND MANUFACTURING METHOD OF THE LITHIUM ION SECONDARY BATTERY 审中-公开
    锂离子二次电池的锂离子二次电池及其制造方法

    公开(公告)号：US20160156025A1

    公开(公告)日：2016-06-02

    申请号：US14951724

    申请日：2015-11-25

    申请人： HITACHI, LTD.

    发明人： Seogchul SHIN ,  Naoki KIMURA ,  Eiji SEKI

    IPC分类号： H01M4/36 ,  H01M4/62 ,  H01M4/38 ,  H01M4/66 ,  H01M4/587 ,  H01M10/0525

    CPC分类号： H01M4/364 ,  H01M4/13 ,  H01M4/386 ,  H01M4/483 ,  H01M4/587 ,  H01M4/622 ,  H01M4/661 ,  H01M10/0525

    摘要： A lithium ion secondary battery having a negative electrode includes a negative electrode active material containing at least one of two material of silicon and a silicon compound and carbon, a weight mixing ratio of at least one of two material of the silicon and the silicon compound and the carbon is 20:80 to 50:50, when D90 of particles of at least one of two material of the silicon and the silicon compound is x, D50 of particles of the carbon is y, and the weight mixing ratio of the carbon is z, y≦−1.17x+0.45z is satisfied, the x is between 2 μm and 10 μm, the y is between 10 μm and 23 μm, and the z is between 50% and 80% by weight, and a coefficient of expansion when the negative electrode is fully charged is 110% or more and 140% or less.

    摘要翻译： 具有负极的锂离子二次电池包括含有硅和硅化合物和碳的两种材料中的至少一种的硅的负极活性物质，硅和硅化合物的两种材料中的至少一种的重量混合比，以及 碳为20:80至50:50，当硅和硅化合物的两种材料中的至少一种的颗粒的D90为x时，碳的颗粒的D50为y，碳的重量混合比为 z，y＆nlE; -1.17x + 0.45z，x在2μm和10μm之间，y在10μm和23μm之间，z在50wt％到80wt％之间，系数 负极充满电时的膨胀为110％以上且140％以下。

    LITHIUM ION SECONDARY BATTERY
    2.
    发明申请
    LITHIUM ION SECONDARY BATTERY 有权
    锂离子二次电池

    公开(公告)号：US20160013484A1

    公开(公告)日：2016-01-14

    申请号：US14740342

    申请日：2015-06-16

    申请人： Hitachi, Ltd.

    发明人： Eiji SEKI ,  Naoki KIMURA ,  Seogchul SHIN

    IPC分类号： H01M4/38 ,  H01M10/0525

    CPC分类号： H01M4/386 ,  H01M4/364 ,  H01M4/587 ,  H01M10/0525 ,  Y02E60/122

    摘要： A lithium ion secondary battery includes: a positive electrode including a positive electrode active material; a negative electrode formed by coating a negative electrode active material mixture onto a surface of a negative electrode collector, the negative electrode active material mixture including a negative electrode active material, a conductive additive, and a binder; a separator interposed between the positive electrode and the negative electrode; and an electrolyte, in which the negative electrode active material includes graphite and an Si alloy, inequities of 0.43≦x≦9.0 and 8≦y

    摘要翻译： 锂离子二次电池包括：正极，包括正极活性物质; 通过将负极活性物质混合物涂布在负极集电体的表面上形成的负极，所述负极活性物质混合物包含负极活性物质，导电性添加剂和粘合剂; 夹在正极和负极之间的隔膜; 和其中负极活性材料包括石墨和Si合金的电解质，当石墨和Si合金的质量比定义为x和x时，满足不等式为0.43和nlE; x＆nlE; 9.0和8＆nlE; y <18 将负极活性物质混合物的涂布量定义为y（mg / cm 2）。 因此，可以提高其初始容量，并且可以提高在负极中包含Si合金的锂离子二次电池的容量保持率。

    LITHIUM-ION SECONDARY BATTERY
    4.
    发明申请
    LITHIUM-ION SECONDARY BATTERY 有权
    锂离子二次电池

    公开(公告)号：US20160072125A1

    公开(公告)日：2016-03-10

    申请号：US14830205

    申请日：2015-08-19

    申请人： HITACHI, LTD.

    发明人： Naoki KIMURA ,  Eiji SEKI

    IPC分类号： H01M4/38 ,  H01M4/70 ,  H01M2/18 ,  H01M4/48 ,  H01M4/66 ,  H01M10/0525 ,  H01M4/583

    CPC分类号： H01M4/386 ,  H01M4/134 ,  H01M4/366 ,  H01M4/48 ,  H01M4/483 ,  H01M4/587 ,  H01M4/661 ,  H01M4/70 ,  H01M10/02 ,  H01M10/0525 ,  H01M10/0585

    摘要： A lithium-ion secondary battery of the present invention contains: a laminated electrode group formed of a rectangular positive electrode; a rectangular negative electrode; and a separator. In such a laminated electrode group, the positive electrode includes a positive electrode current collector foil, and a positive electrode mixture layer containing a positive electrode active material, the negative electrode includes a negative electrode current collector foil, and a negative electrode mixture layer containing a negative electrode active material. The negative electrode active material includes a silicon-based material, and a carbonaceous material. A mass ratio of the silicon-based material and the carbonaceous material is 20:80 to 80:20. The silicon-based material is a Si alloy or SiOx (0.5≦x≦1.5). The positive electrode and the negative electrode have a collection terminal protruding from a same side of the laminated electrode group. The negative electrode current collector foil is formed of any one of a stainless steel; a copper alloy containing a copper with a purity of 99.9% or more, and one or more kinds of elements selected from the group consisting of zirconium, silver and tin; and a copper with a purity of 99.99% or more. When a comparison are drawn between lengths of the positive electrode mixture layer and the negative electrode mixture layer in a direction where the collection terminal protrudes from the same side, the length of the positive electrode mixture layer is the length of the negative electrode mixture layer or longer. Thus, a short circuit in charging and discharging of the lithium-ion secondary battery can be suppressed.

    摘要翻译： 本发明的锂离子二次电池包含：由矩形正极形成的叠层电极组; 矩形负极; 和分隔符。 在这种层叠电极组中，正极包括正极集电体箔和含有正极活性物质的正极合剂层，负极包括负极集电体箔和负极混合层， 负极活性物质。 负极活性物质包括硅基材料和碳质材料。 硅基材料和碳质材料的质量比为20:80至80:20。 硅基材料是Si合金或SiOx（0.5＆amp; NlE; x＆nlE; 1.5）。 正极和负极具有从层叠电极组的同一侧突出的收集端子。 负极集电箔由不锈钢中的任一种形成， 含有纯度为99.9％以上的铜的铜合金和选自锆，银和锡的一种或多种元素; 和纯度为99.99％以上的铜。 当在收集端子从相同侧突出的方向上比较正极合剂层和负极复合层之间的长度时，正极合剂层的长度是负极混合物层的长度或 更长 因此，能够抑制锂离子二次电池的充放电短路。

    METHOD AND APPARATUS FOR MANUFACTURING NEGATIVE ELECTRODE FOR LITHIUM-ION SECONDARY BATTERY, NEGATIVE ELECTRODE FOR LITHIUM-ION SECONDARY BATTERY, AND LITHIUM-ION SECONDARY BATTERY
    7.
    发明申请
    METHOD AND APPARATUS FOR MANUFACTURING NEGATIVE ELECTRODE FOR LITHIUM-ION SECONDARY BATTERY, NEGATIVE ELECTRODE FOR LITHIUM-ION SECONDARY BATTERY, AND LITHIUM-ION SECONDARY BATTERY 审中-公开
    用于制造锂离子二次电池的负极的方法和装置，用于锂离子二次电池的负极和锂离子二次电池

    公开(公告)号：US20150280208A1

    公开(公告)日：2015-10-01

    申请号：US14626697

    申请日：2015-02-19

    申请人： Hitachi, Ltd.

    发明人： Naoki KIMURA ,  Eiji SEKI

    IPC分类号： H01M4/04 ,  H01M10/0525 ,  H01M4/62 ,  H01M4/38 ,  H01M4/139 ,  H01M4/13

    CPC分类号： H01M4/0435 ,  H01M4/0404 ,  H01M4/0471 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/386 ,  H01M4/387 ,  H01M4/622 ,  H01M10/0525 ,  Y02T10/7011

    摘要： In manufacturing a negative electrode for a lithium-ion secondary battery, the negative electrode including a negative-electrode mixture layer including a negative-electrode active material and a binder containing at least one selected from a group consisting of a polyimide, a polyamide-imide and a polyamide, and a negative-electrode collector, the negative-electrode collector coated with a negative-electrode mixture slurry containing the binder is pressed by a hot-press roller which is heated to perform thermal curing and press together, such that the negative-electrode collector with the negative-electrode mixture slurry has a temperature of 200 to 400° C. Thus, mass-productivity of the negative electrode for the lithium-ion secondary battery is improved, and reduction in each of adhesiveness and adhesion uniformity of the binder as a component of the negative electrode is suppressed, and thereby direct-current resistance (DCR) of the lithium-ion secondary battery is decreased and a cycle life of the battery is improved.

    摘要翻译： 在制造锂离子二次电池用负极时，所述负极包括负极混合层，所述负极混合层含有负极活性物质和含有选自聚酰亚胺，聚酰胺 - 酰亚胺 和聚酰胺和负极集电体，涂覆有含有粘合剂的负极混合浆料的负极集电体被加热的热压辊压制，进行热固化并压在一起，使得负极 具有负极混合浆料的电极集电体的温度为200〜400℃。因此，锂离子二次电池用负极的批量生产率提高，并且粘合性和粘合均匀性均降低 作为负极的成分的粘合剂被抑制，由此锂离子二次电池的直流电阻（DCR）降低，并且 电池的循环寿命得到改善。