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    Lithium ion secondary battery
    1.
    发明授权
    Lithium ion secondary battery 有权
    锂离子二次电池

    公开(公告)号：US08211574B2

    公开(公告)日：2012-07-03

    申请号：US10568536

    申请日：2004-09-13

    申请人： Kohei Suzuki ,  Tsumoru Ohata ,  Junji Nakajima ,  Akiko Fujino ,  Shigeo Ikuta ,  Tetsuya Hayashi ,  Yusuke Fukumoto ,  Shinji Kasamatsu

    发明人： Kohei Suzuki ,  Tsumoru Ohata ,  Junji Nakajima ,  Akiko Fujino ,  Shigeo Ikuta ,  Tetsuya Hayashi ,  Yusuke Fukumoto ,  Shinji Kasamatsu

    IPC分类号： H01M4/68

    CPC分类号： H01M2/166 ,  H01M2/1673 ,  H01M2/168 ,  H01M2/18 ,  H01M4/133 ,  H01M4/134 ,  H01M4/621 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/4235

    摘要： A lithium ion secondary battery includes a positive electrode capable of absorbing and desorbing lithium ion, a negative electrode capable of absorbing and desorbing lithium ion, a porous film interposed between the positive electrode and the negative electrode, and a non-aqueous electrolyte, the porous film being adhered to a surface of at least the negative electrode. The porous film includes an inorganic filler and a first binder: The content of the first binder in the porous film is 1.5 to 8 parts by weight per 100 parts by weight of the filler: The first binder includes a first rubber including an acrylonitrile unit: The first rubber is water-insoluble and has a decomposition temperature of 250° C. or higher. The negative electrode includes a negative electrode active material capable of absorbing and desorbing lithium ion and a second binder, and the second binder includes a second rubber particle and a water-soluble polymer.

    摘要翻译： 锂离子二次电池包括能够吸收和解吸锂离子的正极，能够吸收和解吸锂离子的负极，介于正极和负极之间的多孔膜和非水电解质，多孔 膜至少粘附在至少负极的表面上。 多孔膜包括无机填料和第一粘合剂：多孔膜中的第一粘合剂的含量相对于100重量份的填料为1.5〜8重量份。第一粘合剂包括含有丙烯腈单元的第一橡胶： 第一橡胶是水不溶性的，分解温度为250℃以上。 负极包括能够吸收和解吸锂离子的负极活性物质和第二粘合剂，第二粘合剂包括第二橡胶颗粒和水溶性聚合物。

    Lithium ion secondary battery and method for producing the same
    5.
    发明授权
    Lithium ion secondary battery and method for producing the same 有权
    锂离子二次电池及其制造方法

    公开(公告)号：US07816038B2

    公开(公告)日：2010-10-19

    申请号：US11578964

    申请日：2005-04-19

    申请人： Tsumoru Ohata ,  Junji Nakajima ,  Tetsuya Hayashi ,  Shigeo Ikuta ,  Akiko Fujino ,  Eitaro Nakamura

    发明人： Tsumoru Ohata ,  Junji Nakajima ,  Tetsuya Hayashi ,  Shigeo Ikuta ,  Akiko Fujino ,  Eitaro Nakamura

    IPC分类号： H01M4/04 ,  H01M4/62

    CPC分类号： H01M10/0567 ,  H01M4/0402 ,  H01M4/13 ,  H01M4/131 ,  H01M4/133 ,  H01M4/139 ,  H01M4/62 ,  H01M10/0525 ,  H01M2300/004 ,  Y10T29/49115

    摘要： A method for producing a lithium ion secondary battery includes the steps of: forming a positive electrode mixture layer on a positive electrode substrate to obtain a positive electrode; forming a negative electrode mixture layer on a negative electrode substrate to obtain a negative electrode; forming an electronically insulating porous film that is bonded to a surface of at least one of the positive electrode and the negative electrode; interposing a separator between the positive electrode and the negative electrode to form an electrode plate assembly; and impregnating the electrode plate assembly with a non-aqueous electrolyte. The step of forming a porous film includes the steps of: preparing a porous film paste that contains a film binder comprising a thermo-cross-linkable resin and a particulate filler; and applying the porous film paste onto a surface of at least one of the positive electrode and the negative electrode and heating the resultant applied film.

    摘要翻译： 锂离子二次电池的制造方法包括以下步骤：在正极基板上形成正极合剂层，得到正极; 在负极基板上形成负极合剂层，得到负极; 形成与所述正极和所述负极中的至少一个的表面接合的电子绝缘性多孔膜， 在正极和负极之间插入隔板以形成电极板组件; 并用非水电解质浸渍电极板组件。 形成多孔膜的步骤包括以下步骤：制备含有包含可热交联树脂和颗粒填料的膜粘合剂的多孔膜糊; 以及将所述多孔膜浆料涂布在所述正极和负极中的至少一个的表面上，并加热所得到的涂膜。

    Lithium ion secondary battery
    6.
    发明申请
    Lithium ion secondary battery 有权
    锂离子二次电池

    公开(公告)号：US20070122715A1

    公开(公告)日：2007-05-31

    申请号：US10577494

    申请日：2004-12-28

    申请人： Akiko Fujino ,  Tsumoru Ohata ,  Tetsuya Hayashi

    发明人： Akiko Fujino ,  Tsumoru Ohata ,  Tetsuya Hayashi

    IPC分类号： H01M2/16

    CPC分类号： H01M10/052 ,  H01M2/16 ,  H01M2/348 ,  H01M10/02

    摘要： A lithium ion secondary battery in which an abnormal overheat due to a short circuit of a current collecting portion of one electrode and an electrode material mixture of the other is prevented. The lithium ion secondary battery has: a positive electrode including a core material having a current collecting portion and a material mixture carrying portion and a material mixture layer carried thereon; a negative electrode including a core material having a current collecting portion and a material mixture carrying portion and a material mixture layer carried thereon; a separator and a porous electron-insulating layer including an inorganic oxide filler and a binder both interposed between the positive and negative electrodes; and a non-aqueous electrolyte. The insulating layer is carried on a region including surfaces of the positive electrode current collecting portion and material mixture layer, and/or a region including surfaces of the negative electrode current collecting portion and material mixture layer. The positive and negative electrodes are wound with the separator and the insulating layer interposed therebetween.

    摘要翻译： 防止了由于一个电极的集电部分的短路和另一个电极的电极材料混合物引起的异常过热的锂离子二次电池。 锂离子二次电池具有：正极，其具有芯材，该芯材具有集电部和材料混合物承载部以及承载在其上的材料混合层; 包括具有集电部分和材料混合物承载部分的芯材的负极和承载在其上的材料混合物层; 分离器和包含无机氧化物填料和粘合剂的多孔电子绝缘层，两者都介于正极和负极之间; 和非水电解质。 绝缘层被承载在包括正极集电部和复合层的表面的区域和/或包括负极集电部和材料混合层的表面的区域上。 正极和负极用隔板缠绕，绝缘层插入其间。