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    • 5. 发明申请
    • Battery and Center Pin
    • 电池和中心针
    • US20070269711A1
    • 2007-11-22
    • US11718844
    • 2005-11-01
    • Takeshi MeguroYoshihiro DokkoHiroyuki SuzukiTadashi MieboriShinji HatakeYuzuru Fukushima
    • Takeshi MeguroYoshihiro DokkoHiroyuki SuzukiTadashi MieboriShinji HatakeYuzuru Fukushima
    • H01M4/00
    • H01M10/02H01M2/00H01M4/38H01M4/386H01M4/387H01M4/58H01M10/0525H01M10/0587H01M10/42
    • A battery with improved safety that can more surely short-circuit electrodes when flattened out by the external force is provided. A center pin (30) is inserted in the center of a spirally wound electrode body formed by layering and spirally winding a cathode and an anode with a separator in between. The center pin (30) has a cut line (31) provided in the longitudinal direction and a first cutout (32) vertically crossing the cut line (31). When flattened out by the external force, a corner (33) at an intersection of the cut line (31) and the first cutout (32) is projected, and short-circuit is surely generated. Further, it is preferable that the center pin (30) has a second cutout (34) in the direction perpendicular to the cut line (31) in a position facing the cut line (31) in the circumferential direction. It is also preferable that the center pin (30) has a cross sectional shape of an oval or an ellipse, and the cut line (31) is provided in a position where the diameter of the oval or the ellipse is the largest.
    • 提供了一种具有改进的安全性的电池,其可以在由外力平坦化时更可靠地短路电极。 中心销(30)插入螺旋卷绕的电极体的中心,该电极主体通过层压并螺旋地缠绕阴极和阳极而形成。 中心销(30)具有沿纵向设置的切割线(31)和垂直于切割线(31)的第一切口(32)。 当被外力平坦化时,突出了切割线(31)与第一切口(32)交点处的角部(33),并且可靠地产生短路。 此外,优选的是,所述中心销(30)在与所述切割线(31)相对的圆周方向上与所述切割线(31)垂直的方向上具有第二切口(34)。 还优选的是,中心销(30)具有椭圆形或椭圆形的横截面形状,并且切割线(31)设置在椭圆或椭圆的直径最大的位置。