Battery module

A battery module comprising:

• a cell stack body in which a plurality of battery cells are stacked;
• and
• a module case accommodating the cell stack body therein and having a first surface and a second surface, opposite to the first surface,
• wherein the module case comprises:
• an upper case disposed on the cell stack body;
• a lower case disposed below the cell stack body and coupled to the upper case;
• and
• a module fastening portion for coupling the battery module to an external structure, wherein the module fastening portion is disposed on both side surfaces of the cell stack body and is disposed closer to the first surface of the module case than to the second surface of the module case,
• wherein the lower case comprises a lower plate disposed below the cell stack body, and a coupling plate disposed on both side surfaces of the cell stack body and coupled to the upper case, wherein the upper case comprises an upper plate disposed on the cell stack body, and a side plate disposed on both side surfaces of the cell stack body,
• wherein a case fastening portion, which is a portion in which a side fixing member is coupled to a busbar assembly through both the side plate and the coupling plate, is disposed closer to the second surface of the module case than to the first surface of the module case, and
• wherein in the case fastening portion, the coupling plate is disposed to overlap the side plate, and
• wherein the side fixing member penetrates an overlapped portion of the coupling plate and the side plate to be coupled to the busbar assembly.