Battery module and battery pack including the same

A battery pack comprising:

• a battery module including:
• a plurality of battery cells stacked on one another in a first direction, thereby forming a stacked structure, wherein some battery cells of the plurality of battery cells are coated with hot melt respectively interposed between battery cells of the plurality of battery cells to fix the battery cells of the plurality of battery cells,
• a pair of end plates configured to respectively surface-contact with opposite end battery cells of the stacked structure in the first direction,
• a pair of bus bar assemblies arranged at opposite ends of the stacked structure in a second direction perpendicular to the first direction and configured to connect electrodes of the plurality of battery cells located at opposite ends in the second direction to each other,
• a first cover for covering one surface of the stacked structure in a third direction perpendicular to the first direction and the second direction,
• a first clamp including opposite ends that are respectively bonded to the pair of end plates across the first cover at an outside of the first cover, and
• a second clamp including opposite ends that are respectively bonded to the pair of end plates across a surface of the stacked structure, which faces the surface on which the first cover is disposed;
• and
• a case including an accommodation surface on which the battery module is accommodated,
• wherein:
• the stacked structure is exposed through one surface of the battery module, which faces the surface on which the first cover is disposed,
• the battery module is disposed to position the exposed stacked structure and the accommodation surface to face each other, and
• a gap filler is interposed between the stacked structure and the accommodation surface.