公开(公告)号：US20100021812A1

公开(公告)日：2010-01-28

申请号：US12518561

申请日：2007-11-07

申请人： Sungjong Kim ,  Jeahan Jung ,  Bong Tae Kim ,  Hong-Jeong Kim

发明人： Sungjong Kim ,  Jeahan Jung ,  Bong Tae Kim ,  Hong-Jeong Kim

IPC分类号： H01M2/04

CPC分类号： H01M2/0413 ,  H01M2/022 ,  H01M10/0525 ,  H01M10/058 ,  Y02E60/122

摘要： Disclosed herein is a cylindrical battery constructed in a structure in which a crimp region, at which a cap assembly is mounted to an open upper end of a cylindrical container having an electrode assembly mounted therein, is formed at the upper end of the container, wherein the crimp region is constructed in a structure in which the upper end of the crimp region is gently bent, such that the crimp region surrounds a gasket located at the inside of the crimp region, a bent front end is continuously bent twice to press the gasket, while the bent front end extends inward, such that a radius of curvature (R1) of the first bent area is less than a radius of curvature (R2) of the second bent area. The cylindrical battery according to the present invention is constructed such that the upper end of the crimp region of the cylindrical container is continuously bent twice in a predetermined condition. Consequently, when external physical impacts, such as vibration or dropping, are applied to the battery, and when the internal pressure of the battery increases, the sealed portions are restrained from being separated from each other, thereby preventing the leakage of an electrolyte and thus greatly improving the safety of the battery. Furthermore, it is possible to minimize the deformation of the container, such as wrinkles, which may be formed due to failure to form the bent area gently when bending the front end of the crimp region with a small radius of curvature.

摘要翻译： 本文公开了一种圆柱形电池，其构造成在容器的上端形成有将盖组件安装在其中安装有电极组件的圆筒形容器的敞开的上端的卷曲区域，其中， 卷曲区域被构造成使卷曲区域的上端轻轻地弯曲的结构，使得卷曲区域围绕位于卷曲区域内侧的垫圈，弯曲的前端连续弯曲两次以将垫圈 而弯曲的前端向内延伸，使得第一弯曲区域的曲率半径（R1）小于第二弯曲区域的曲率半径（R2）。 根据本发明的圆柱形电池被构造成使得圆柱形容器的压接区域的上端在预定条件下连续弯曲两次。 因此，当对电池施加外部物理冲击（例如振动或跌落）时，并且当电池的内部压力增加时，密封部分被限制为彼此分离，从而防止电解液的泄漏，因此 大大提高了电池的安全性。 此外，可以最小化容器的变形，例如由于在以小的曲率半径弯曲卷曲区域的前端时轻轻地形成弯曲区域可能形成的皱纹。