Battery module and method of manufacturing the same

A battery module comprising:

• a battery cell assembly including a plurality of battery cells adjacent to each other and stacked in parallel, and a plurality of electrode leads protruding from respective ones of the plurality of battery cells along a protrusion direction;
• and
• a module cover accommodating the battery cell assembly,
• wherein the module cover includes an upper cover part exposing the plurality of electrode leads while covering an upper surface and a side surface of the battery cell assembly, and a bus bar frame part coupled with the upper cover part and integrally formed with the upper cover part at a position corresponding to the plurality of electrode leads exposed by the upper cover part, wherein the upper cover part and the bus bar frame part are integrally combined, such that the upper cover part and the bus bar frame part are rigidly fixed and nonrotatable with respect to one another, so as to form the module cover,
• wherein the bus bar frame part includes a plurality of bus bars electrically connected to respective ones of the plurality of electrode leads, and
• wherein each one of the plurality of bus bars includes a clamping part to which an electrode lead of the plurality of electrode leads is inserted, a fixing part connecting and fixing the clamping part, and an opening defined opposite the fixing part along a first direction, the first direction being orthogonal to the protrusion direction.