| 摘要 |
The present invention provides a battery cell comprising: parts to be subject to thermal bonding to which a battery case is thermally-bonded so as to form a first sealing part of the battery cell; a first space in which an electrode assembly is accommodated; and second spaces which form, together with the parts to be subject to thermal bonding, the outer periphery of the battery case and are formed on the outer side of the parts to be subject to thermal bonding, wherein at least one of the second spaces has a metal piece mounted thereon for preventing moisture from penetrating into the first space from the outside. |
