Battery Pack

Abstract: The present invention relates to a battery pack. More particularly, the battery pack accommodating a cell stack assembly including a plurality of cells according to the present invention comprises a pack case on which the cell stack assembly is seated, wherein the pack case comprises: a lower plate supporting the lower portion of the cell stack assembly seated thereon; a side wall having a hollow structure, which is coupled to the lower plate so as to support the side portion of the cell stack assembly and has a gas discharge passage therein; and an auxiliary barrier wall coupled to the lower plate and the side wall so as to partition the inner space of the pack case, and the auxiliary barrier wall has a gas flow path that is in communication with the gas discharge passage of the side wall.

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