Battery module and production method therefor

A method for producing a battery module, comprising the successive steps of

• (a) providing a plurality of thin plate batteries each having a substantially rectangular shape as viewed from above and including a positive electrode tab and a negative electrode tab extending from a front side;
• (b) arranging the plurality of thin plate batteries on the same plane such that the front sides of the plurality of thin plate batteries form a straight line and such that the positive electrode tabs and the negative electrode tabs of the plurality of thin plate batteries are alternately disposed in a direction parallel to the front sides;
• (c) electrically connecting the positive electrode tab and the negative electrode tab between adjacent thin plate batteries such that the plurality of thin plate batteries are connected in series;
• and
• (d) placing the adjacent thin plate batteries one on top of the other by folding an electrically conducting path that electrically connects the positive electrode tab and the negative electrode tab along a folding line that is parallel to lateral sides adjacent to the front sides.