公开(公告)号：US08974936B2

公开(公告)日：2015-03-10

申请号：US13306677

申请日：2011-11-29

申请人： Jinsoo Lee ,  Kilyoung Lee ,  Jin Kim ,  Soonho Ahn ,  Joo-Hwan Sung

发明人： Jinsoo Lee ,  Kilyoung Lee ,  Jin Kim ,  Soonho Ahn ,  Joo-Hwan Sung

IPC分类号： H01M2/12 ,  H01M2/02 ,  H01M10/052

CPC分类号： H01M2/1241 ,  H01M2/0217 ,  H01M2/026 ,  H01M2/0285 ,  H01M10/052

摘要： A prismatic secondary battery includes an electrode assembly having a cathode, an anode, and a separator mounted in a prismatic battery case in a sealed state, the battery case including a hexahedral case body open at the top thereof, the hexahedral case body being made of a metal material, and a case cap coupled to the open top of the case body, the case cap having an electrode terminal, wherein the case body is provided at a region exhibiting a stress distribution equivalent to 40% or less of the maximum stress of the case in a high pressure state with a line-shaped safety groove configured to be ruptured when high pressure occurs in the battery, and the safety groove is configured such that a residual thickness of the case body is decreased toward the middle from opposite ends of the safety groove in the longitudinal direction.

摘要翻译： 棱柱二次电池包括具有阴极，阳极和安装在密封状态的棱柱形电池壳体中的隔膜的电极组件，电池壳体包括在其顶部开口的六面体壳体，六面体壳体由 金属材料和壳体帽，其联接到壳体的开口顶部，所述壳体盖具有电极端子，其中所述壳体设置在显示相当于最大应力的40％以下的应力分布的区域 在高压状态下，当电池中发生高压时，线状安全槽被配置为破裂，并且安全槽被构造成使得壳体的剩余厚度从第二端的相对端向中间减小 纵向安全槽。