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    • 82. 发明授权
    • Non-aqueous electrolyte secondary battery
    • 非水电解质二次电池
    • US08067115B2
    • 2011-11-29
    • US12030528
    • 2008-02-13
    • Takayuki ShiraneKaoru InoueMasaya UgajiMasato FujikawaToshitada Sato
    • Takayuki ShiraneKaoru InoueMasaya UgajiMasato FujikawaToshitada Sato
    • H01M4/13H01M4/58
    • H01M10/0525H01M4/13H01M4/131H01M4/485H01M2004/027H01M2300/004
    • A non-aqueous electrolyte secondary battery comprising at least a negative electrode having a current collector provided thereon with convex portions and columnar bodies formed on the convex portions, each of the columnar bodies comprising n stages (where n≧2) of overlaid columnar body portions alternately tilted to different orientations along a longitudinal direction of the current collector, a positive electrode having a positive electrode current collector provided on both surfaces thereof with a positive electrode mixture layer containing a positive electrode active material capable of inserting and extracting lithium ions reversibly, and a separator interposed between the positive electrode and the negative electrode in a confronting manner, wherein tip portions of the columnar body portions at the uppermost stage of the columnar bodies on the negative electrode are tilted toward a trailing end of winding direction.
    • 本发明提供一种非水电解质二次电池,其至少包括具有集电体的至少具有凸部的集电体和形成在所述凸部上的柱状体的负极,每个所述柱状体包括重叠的柱状体部的n个阶段(n≥2) 交替地沿着集电体的纵向方向倾斜到不同的取向,具有正极集电体的正电极在其两个表面上设置有包含能够可逆地插入和提取锂离子的正极活性材料的正电极混合物层,以及 以相对的方式插入在正极和负极之间的隔板,其中在负极上的柱状体的最上段的柱状体部的末端部朝向卷绕方向的后端倾斜。