Battery pack and device including the same
A battery pack of the present disclosure includes a lower pack frame on which a plurality of battery modules are mounted; and an upper pack frame located on an upper part of the plurality of battery modules, wherein the lower pack frame includes a bottom part in contact with a lower surface of the plurality of battery modules and a frame part in contact with at least one side surface of at least one of the plurality of battery modules, wherein the frame part comprises a side surface frame extending from an edge of the bottom part toward the upper part, and an inner frame located inside the side surface frame, wherein the inner frame includes at least one venting hole that penetrates an outer surface of the inner frame, and wherein the inner frame serves as a path through which a gas generated in the at least one of the plurality of battery modules moves.
1 . A battery pack comprising:
a lower pack frame on which a plurality of battery modules are mounted;
an upper pack frame located on an upper part of the plurality of battery modules; and
a gasket part,
wherein the lower pack frame comprises a bottom part in contact with a lower surface of the plurality of battery modules and a frame part in contact with at least one side surface of at least one of the plurality of battery modules,
wherein the frame part comprises a side surface frame extending from an edge of the bottom part toward the upper part, and an inner frame located inside the side surface frame,
wherein the inner frame comprises at least one venting hole that penetrates an outer surface of the inner frame,
wherein the inner frame serves as a path through which a gas generated in the at least one of the plurality of battery modules moves, and
wherein the gasket part is located between the inner frame and the upper pack frame.
2 . The battery pack according to claim 1 , wherein:
the plurality of battery modules are partitioned from each other by the side surface frame and the inner frame.
3 . The battery pack according to claim 1 , wherein:
the inner frame comprises a horizontal beam extending along a longitudinal direction of the lower pack frame, and at least two vertical beams extending in a direction perpendicular to the horizontal beam.
4 . The battery pack according to claim 3 , wherein:
the at least one venting hole is formed on an outer surface of the horizontal beam located between adjacent vertical beams among the at least two vertical beams, and
the horizontal beam includes a path through which the gas generated in the at least one of the plurality of battery modules moves.
5 . The battery pack according to claim 4 , wherein:
the at least one venting hole penetrates the outer surface of the horizontal beam.
6 . The battery pack according to claim 3 , wherein:
at least one rupture part is formed on one surface of the side surface frame extending in a direction perpendicular to the horizontal beam, and
the at least one rupture part is ruptured when a pressure inside the battery pack reaches a certain level or higher.
7 . The battery pack according to claim 6 , wherein:
the at least two vertical beams located adjacent to one surface of the side surface frame on which the rupture part is formed are spaced apart from each other.
8 . The battery pack according to claim 7 , wherein:
one end of the horizontal beam extends up to one vertical beam located adjacent to one surface of the side surface frame in which the rupture part is formed from among the at least two vertical beams, and
the one end of the horizontal beam is opened towards the side surface frame.
9 . The battery pack according to claim 7 , wherein:
one end of the horizontal beam extends up to one surface of the side surface frame in which the at least one rupture part is formed, and
the one end of the horizontal beam is in contact with the one surface of the side surface frame, with the one surface of the side surface frame and the one end of the horizontal beam in communication with each other.
10 . The battery pack according to claim 1 , wherein:
the inner frame comprises a horizontal beam extending along a longitudinal direction of the lower pack frame, and at least two vertical beams extending in a direction perpendicular to the horizontal beam.
11 . The battery pack according to claim 10 , wherein:
the gasket part comprises a first gasket part and a second gasket part, and
the first gasket part is located on the horizontal beam, and the second gasket part is located on the at least two vertical beams, respectively.
12 . The battery pack according to claim 11 , further comprising:
an inter busbar that is electrically connected to the plurality of battery modules,
wherein the inter busbar extends along at least one of the first gasket part and the second gasket part, and is mounted on at least one of the first gasket part and the second gasket part.
13 . The battery pack according to claim 12 , wherein:
the inter busbar is sealed with a heat resistant rubber.
14 . A device comprising the battery pack according to claim 1 .