公开(公告)号：US20090246605A1

公开(公告)日：2009-10-01

申请号：US12470440

申请日：2009-05-21

申请人： Seok Gyun CHANG ,  Yoo Eup HYUNG ,  Jung Seog KIM ,  Young Eun YUN

发明人： Seok Gyun CHANG ,  Yoo Eup HYUNG ,  Jung Seog KIM ,  Young Eun YUN

IPC分类号： H01M2/12

CPC分类号： H01M10/4235 ,  H01M10/0431 ,  H01M10/0587

摘要： Lithium rechargeable batteries having functional center pins are provided. A lithium rechargeable battery has a center pin whose top and bottom ends are blocked by a thermal cut-off composition to reduce the void volume inside a bare cell during initial overcharge. The thermal cut-off composition melts at a temperature within a specific temperature range, e.g. between about 80 and about 250° C. This prevents the battery from exploding and igniting. Thus, the inventive lithium rechargeable batteries have improved thermal stability.

摘要翻译： 提供具有功能中心引脚的锂可充电电池。 锂可再充电电池具有中心销，其顶端和底端被热截断组合物封闭以减少初始过充电期间裸电池内的空隙体积。 热切断组合物在特定温度范围内的温度熔化，例如 在约80和约250℃之间。这防止电池爆炸和点燃。 因此，本发明的锂可再充电电池具有改善的热稳定性。