Nonaqueous electrolyte secondary cell
    92.
    发明授权
    Nonaqueous electrolyte secondary cell 失效
    非水电解质二次电池

    公开(公告)号:US06458485B2

    公开(公告)日:2002-10-01

    申请号:US09819643

    申请日:2001-03-29

    IPC分类号: H01M466

    摘要: A nonaqueous electrolyte secondary cell having a rolled-up electrode unit housed in a cell can and comprising a positive electrode and a negative electrode each formed by coating a surface of a striplike current collector with an electrode material. According to a first embodiment, the current collector of at least one of the positive electrode and the negative electrode comprises a plurality of current collector pieces 42 arranged along one direction and a PTC element 5 interconnecting each pair of adjacent current collector pieces 42. Alternatively with a second embodiment, at least one of the positive electrode and the negative electrode comprises a PTC element held between opposed faces of an uncoated portion of the current collector thereof and a base end portion of a current collector tab. The PTC element serves to prevent continuous occurrence of a current in excess of a predetermined value and realizes a high energy density.

    摘要翻译: 具有容纳在电池中的卷绕电极单元的非水电解质二次电池可以包括通过用电极材料涂覆带状集电体的表面而形成的正极和负极。 根据第一实施例,正电极和负电极中的至少一个的集电器包括沿着一个方向布置的多个集电器片42和连接每对相邻集电器片42的PTC元件5。 在第二实施例中,正电极和负电极中的至少一个包括保持在其集电器的未涂覆部分的相对面和集电极片的基端部之间的PTC元件。 PTC元件用于防止超过预定值的电流的连续发生并且实现高能量密度。

    Lithium battery including storage stabilized dioxolane-containing electrolyte
    94.
    发明授权
    Lithium battery including storage stabilized dioxolane-containing electrolyte 失效
    锂电池包括储存稳定的含二氧戊环的电解质

    公开(公告)号:US06255021B1

    公开(公告)日:2001-07-03

    申请号:US09124792

    申请日:1998-07-30

    IPC分类号: H01M616

    摘要: A nonaqueous electrolyte battery having improved storage stability is disclosed. The battery includes a positive electrode; s negative electrode in which the active material is lithium or a compound capable of absorbing and desorbing lithium; and a nonaqueous electrolyte containing an organic solvent, at least 10 wt % of which is dioxolane, a solute and a storage stabilizing additive which is an oxygen acid ester, isoxazole, oxazole or oxazoline or a derivative thereof. The additive reduces the self-discharge rate of the battery during storage.

    摘要翻译: 公开了一种具有改善的储存稳定性的非水电解质电池。 电池包括正电极; 其中活性材料为锂或能够吸收和解吸锂的化合物的负极; 和含有至少10重量%的有机溶剂的非水电解质,其为二氧戊环,作为氧酸酯,异恶唑,恶唑或恶唑啉或其衍生物的溶质和保存稳定添加剂。 该添加剂在储存期间降低电池的自放电率。

    NON-AQUEOUS ELECTROLYTE SECONDARY CELL
    99.
    发明申请
    NON-AQUEOUS ELECTROLYTE SECONDARY CELL 审中-公开
    非水溶性电解质二次电池

    公开(公告)号:US20140023919A1

    公开(公告)日:2014-01-23

    申请号:US13550744

    申请日:2012-07-17

    IPC分类号: H01M4/02

    摘要: The present invention aims to provide the following non-aqueous electrolyte secondary cell having excellent safety. A non-aqueous electrolyte secondary cell comprises an electrode assembly having positive and negative electrodes. The positive electrode has a core exposed portion (formed by exposing at least one side edge of a belt-shaped core along the longitudinal direction of the core), a active material layer formed on the core, and a protective layer (formed on the core exposed portion near the active material layer and having a lower conductivity than the core). The negative electrode has first and second negative electrode core exposed portions, in which both side edges of a belt-shaped negative electrode core are exposed along the longitudinal direction of the core, and a negative electrode active material layer formed on the negative electrode core. And the whole of the second negative electrode core exposed portion is opposite to the protective layer.

    摘要翻译: 本发明的目的在于提供以下具有优异安全性的非水电解质二次电池。 非水电解质二次电池包括具有正极和负极的电极组件。 正极具有芯部露出部(通过沿着芯的长度方向露出带状芯的至少一个侧边缘而形成),形成在芯上的活性物质层和形成在芯上的保护层 暴露部分靠近活性材料层并且具有比芯更低的导电性)。 负极具有第一和第二负极芯露出部分,其中带状负极芯的两个侧边缘沿着芯的纵向方向露出,并且负极活性材料层形成在负极芯上。 并且整个第二负电极芯暴露部分与保护层相反。

    NON-AQUEOUS ELECTROLYTE SECONDARY CELL
    100.
    发明申请
    NON-AQUEOUS ELECTROLYTE SECONDARY CELL 审中-公开
    非水溶性电解质二次电池

    公开(公告)号:US20140023915A1

    公开(公告)日:2014-01-23

    申请号:US13550750

    申请日:2012-07-17

    IPC分类号: H01M10/056

    摘要: The present invention aims to productively provide a non-aqueous electrolyte secondary cell having high capacity. This object can be achieved by adopting the following configuration. A non-aqueous electrolyte secondary cell comprises a non-aqueous electrolyte and an electrode assembly having a positive electrode, a negative electrode and a separator; the positive electrode has a positive electrode core and a positive electrode active material layer; the negative electrode has a negative electrode core and a negative electrode active material layer; a protective layer is provided on the positive electrode active material layer and/or the negative electrode active material layer; the total thickness of the protective layers is 10 to 40% of that of the separator; a porosity of the protective layer is larger than that of any of the positive and negative electrode active material layer; and the non-aqueous electrolyte contains a non-aqueous solvent and two or more kinds of lithium compounds.

    摘要翻译: 本发明的目的在于提供一种具有高容量的非水电解质二次电池。 该对象可以通过采用以下配置来实现。 非水电解质二次电池包括非水电解质和具有正极,负极和隔板的电极组件; 正极具有正极芯和正极活性物质层; 负极具有负极芯和负极活性物质层; 在正极活性物质层和/或负极活性物质层上设置保护层, 保护层的总厚度为隔膜的10〜40%。 保护层的孔隙率大于正极活性物质层和负极活性物质层中的任一个的孔隙率。 非水电解质含有非水溶剂和两种以上的锂化合物。