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    • 3. 发明申请
    • Secondary Battery
    • 二次电池
    • US20070207387A1
    • 2007-09-06
    • US10594276
    • 2005-03-23
    • Hiroki MuraokaTakeshi FukumasaHiroaki FurutaHiroshi Matsuno
    • Hiroki MuraokaTakeshi FukumasaHiroaki FurutaHiroshi Matsuno
    • H01M4/64
    • H01M4/661H01M2/022H01M2/26H01M4/13H01M4/131H01M4/133H01M10/0431H01M10/0525H01M10/0587H01M2300/004
    • A secondary battery of the present invention comprises an electrode assembly in which a strip-shaped positive electrode plate and a strip-shaped negative electrode plate are spirally wound with a strip-shaped separator interposed therebetween, the positive electrode plate comprising a positive electrode current collector and a positive electrode material mixture layer carried thereon, and the negative electrode plate comprising a negative electrode current collector and a negative electrode material mixture layer carried thereon. The positive electrode plate has, in a vicinity of a first end at an initial winding side, an exposed portion of the positive electrode current collector having the positive electrode material mixture layer not formed thereon and a positive electrode lead connected to the exposed portion. A first winding turn outwardly adjacent to a connecting portion of the positive electrode lead with the separator interposed therebetween and a second winding turn outwardly adjacent to the first winding turn with the separator interposed therebetween comprise a portion of the negative electrode plate carrying the negative electrode material mixture layer.
    • 本发明的二次电池包括:电极组件,其中带状正极板和带状负极板螺旋地缠绕有带状隔板,所述正极板包括正极集电体 和负极材料混合物层,负极板包含负极集电体和承载在其上的负极材料混合层。 正极板在初始绕组侧的第一端附近具有未形成正极合剂层的正极集电体的露出部分和与露出部分连接的正极引线。 第一绕组与正电极引线的连接部分相邻,分隔器插入其间,并且隔着隔板插入第二绕组匝的第二绕组匝包括负极板的承载负极材料的一部分 混合层。