Patent ID: 8808908

Claim:
A battery module comprising: a plurality of unit cells stacked one on another in the thickness direction, each of the plurality of unit cells comprising a battery having an electrode assembly disposed in a battery case made of a laminate sheet, the laminate sheet including a metal layer and a resin layer; an electrode lead on each of the plurality of unit cells, each electrode lead including an external portion which is bent and disposed on an external surface of a sealing part of the battery case of each of the plurality of unit cells; through-holes formed in the thickness direction through the electrode leads and the sealing part; and conductive coupling members inserted through the through-holes of each of the plurality of unit cells, whereby the electrical connection and the mechanical coupling constituting the battery module are accomplished, wherein the through-holes formed in the sealing part have a diameter greater than a diameter of the through-holes formed in the electrode leads.