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    • 2. 发明授权
    • Cylindrical lithium secondary battery
    • 圆柱形锂二次电池
    • US07655349B2
    • 2010-02-02
    • US11409031
    • 2006-04-24
    • Jong Ku KimSoon Ki WooJin Wook KimYoun Han ChangSang Bong Nam
    • Jong Ku KimSoon Ki WooJin Wook KimYoun Han ChangSang Bong Nam
    • H01M2/10H01M4/02
    • H01M10/0525H01M2/022H01M2/345H01M10/0431H01M10/0587
    • A cylindrical lithium secondary battery includes an electrode assembly which has a first electrode plate, a second electrode plate, and a separator provided between the first electrode plate and the second electrode plate, is wound in a spiral shape, and has a central space at the center of winding; a core member which is inserted into the central space of the electrode assembly; a case having a space for containing the electrode assembly; and a cap assembly which is connected to an upper portion of the case so as to seal the case. The core member is formed in a tube shape having a gap along a longitudinal direction, which divides the core member into a body portion and left and right lateral end portions, wherein an imaginary arc line extending from an outer circumferential surface of the body portion of the core member defines an imaginary circumference, and wherein the left and right lateral end portions are located inside the imaginary circumference and comprise a pair of first bending portions, inwardly bending and symmetrically disposed with respect to the gap, and a pair of second bending portions bending in a rotation direction that is opposite to the inwardly bending rotational directions of the first bending portions.
    • 圆筒形锂二次电池包括具有第一电极板,第二电极板和设置在第一电极板和第二电极板之间的隔板的电极组件,卷绕成螺旋形状,并且具有中心空间 绕组中心; 芯构件,其插入电极组件的中心空间中; 具有用于容纳电极组件的空间的壳体; 以及盖组件,其连接到壳体的上部以便密封壳体。 芯构件形成为具有沿着长度方向具有间隙的管状,其将芯构件分成主体部分和左右侧端部,其中,从主体部分的外周面延伸的假想弧线 所述芯构件限定假想圆周,并且其中所述左侧横向端部和所述右侧端部位于所述假想圆周内,并且包括相对于所述间隙向内弯曲和对称设置的一对第一弯曲部分,以及一对第二弯曲部分 在与第一弯曲部的向内弯曲的旋转方向相反的旋转方向上弯曲。