BATTERY CELL INCLUDING HOLE

摘要

Disclosed herein is a battery cell configured to have a structure in which a stacked structure including a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode is mounted in a receiving part of a battery case, one or more holes are formed from the battery case to the positive electrode or the negative electrode of the electrode assembly, and a transparent window is formed in a portion of the battery case corresponding to the holes.