Disclosed is a battery pack comprising multiple secondary batteries and allowing a reduction in the number of components and an increase in cooling efficiency. Disclosed as an embodiment is a battery pack comprising: multiple battery cells, each comprising a first electrode and a second electrode formed opposite the first electrode; first tabs coupled to the first electrodes; second tabs connected to the second electrodes of the battery cells and formed so as to extend towards the areas in which the first tabs are positioned; and a cover which accommodates the battery cells, first tabs, and second tabs and from one side of which the first tabs and second tabs protrude, and bus bars electrically connected to the battery cells at the one side of the cover from which the first tabs and second tabs protrude.