Abstract: A battery pack for a vehicle may include: a plurality of battery modules arranged on a plane; a lower case forming an accommodation space surrounding the lower and lateral portions of the plurality of battery modules; a pack cover coupled to the upper portion of the lower case so as to cover the upper portion of the accommodation space; a plurality of inner members provided in the accommodation space to separate the plurality of battery modules; and a heat blocker provided between the pack cover and the inner members so as to thermally isolate the battery modules separated by the inner members.

Abstract: A battery pack for a vehicle, includes a tray assembly; a plurality of battery modules arranged to form a planar grid in the tray assembly; and a pack cover coupled to an upper side of the tray assembly, and together with the tray assembly, forming a pack internal space to accommodate the battery modules therein, in which the battery modules arranged in the tray assembly includes first battery modules of which module outlets for discharging venting gas from insides thereof are formed in a longitudinal direction of the battery pack, and second battery modules of which module outlets are formed in a transverse direction, and the first battery module and the second battery module are alternately disposed inside the tray assembly to form the planar grid.