Battery Pack

Abstract: The present invention relates to a battery pack for accommodating a cell stack including one or more battery cells, the battery pack comprising a pack case that provides a space in which the cell stack is placed, wherein the pack case includes: a base plate supporting a lower part of the cell stack; a main partitioning wall which extends to cross the base plate, and which is coupled to the center part of the base plate; a side wall which includes a gas discharge path as a hollow shape therein, and which is coupled along the perimeter of the edge of the base plate; and a plurality of auxiliary partitioning walls having front ends coupled to the main partitioning wall, and having rear ends coupled to the side wall, the auxiliary partitioning wall includes: a first partitioning member including, at one side thereof, a pair of ribs extending in the longitudinal direction of the auxiliary partitioning wall; and a second partitioning member coupled to the first partitioning member, and the first partitioning member and/or the second partitioning member includes a first hole penetrating between the ribs included in the first partitioning member.

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