SECONDARY BATTERY POUCH HAVING IMPROVED STABILITY, POUCH-TYPE SECONDARY BATTERY USING SAME, AND MEDIUM- OR LARGE-SIZED BATTERY PACK

摘要

The present invention relates to a pouch-type secondary battery having improved stability, and more particularly to a pouch-type secondary battery which is designed such that the shape of the pouch is changeable to disconnect the connection parts between an electrode lead and an electrode tab when the internal pressure of the pouch rises due to excessive charging or the like, and a battery pack including the same. The present invention can significantly increase the lifetime and stability of a pouch-type secondary battery, without the need for additional materials, devices, or the like in the manufacturing of the secondary battery, by fundamentally interrupting the current flow when gas is generated in the secondary battery, and the present invention can provide a pouch-type secondary battery capable of being low cost, light weight, and a battery that is easily changeable in shape, etc.