BATTERY

摘要

Provided is a battery, and more particularly, a battery in which a cutting unit is formed in a seating groove so that the cutting unit and a sub battery module do not contact each other in a normal operation state, such that the battery may be stably driven, and a pouch of the sub battery module may be cut by the cutting unit only in an abnormal operation state such as over-charging, over-discharging, exposure to a high temperature, an electric short circuit, or the like, to prevent ignition or explosion in advance, such that safety may be improved.

主权项

1. A battery comprising:
a sub battery module including at least one battery cell, an electrode tab extended from the battery cell in one direction and, a pouch accommodates the battery cell therein; and a battery module case protecting the sub battery module, wherein a predetermined region of an inner surface of the battery module case is provided with a concave seating groove; and an inner portion of the seating groove is provided with a cutting unit protruding toward the sub battery module to cut the pouch at the time of a contact with the pouch.