Patent ID: 7964302

Claim:
A process for preparation of a secondary battery module, comprising the steps of: forming coupling through-holes in plate-shaped electrode terminals of a plurality of unit cells, in which a cathode terminal and an anode terminal comprising the plate-shaped electrode terminals are formed at an upper end of the unit cells; stacking the unit cells one on another; and inserting coupling members through the coupling through-holes to couple the unit cells with each other, wherein each of the coupling through-holes is located within a critical imaginary area defined by a width corresponding to 80% of the width of the corresponding electrode terminal and a height corresponding to 80% of the height of the corresponding electrode terminal, and the separation distance between the outermost boundary line of each of the through-holes and at least one of the outer edges of each of the electrode terminals is 3 mm or more, wherein the battery module includes an insulating member mounted between the electrode terminals of the neighboring unit cells for maintaining electrical insulation between the electrode terminals, the insulating member having coupling protrusions, which are fitted in the through-holes; and a connecting member coupled to the insulating member for electrically connecting the electrode terminals of the unit cells coupled to the insulating member in series or in parallel with each other, wherein the coupling protrusions are also provided with through-holes having an inner diameter less than that of the through-holes of the electrode terminals; the unit cells are stacked on one another while the insulating member is disposed between the neighboring unit cells, and the coupling members are inserted through the through-holes of the coupling protrusions, whereby the unit cells are coupled with each other; and two double-sided adhesive tapes, which couple neighboring unit cells, are attached to an upper surface of a cell case of the unit cells, are spaced apart from each other, and the stacked unit cells are spaced apart from each other by a thickness of the double-sided adhesive tapes, whereby a stacked structure of the unit cells is stably maintained.