The utility model discloses a novel storage battery plate group welding structure which comprises a battery shell, wherein the battery shell is divided into two areas through a transverse partition wall. The novel storage battery plate group welding structure is characterized in that the positive bus bar and the negative bus bar of each area are exposed on the longitudinal partition wall; a negative bus bar of a plate group and a positive bus bar of a plate group in an adjacent battery cell chamber are directly welded through a lead bar; the negative bus bar of the plate group in the adjacent battery cell chamber of the battery shell and the positive bus bar of the plate group in the next battery cell chamber are directly welded through a lead bar; the positive bus bar or negative bus bar at the other end of one area is directly welded with the negative bus bar or positive bus bar at the other end of the back-to-back arrangement in the other area through a longitudinal lead bar; the positive bus bar at the unconnected end is connected with a positive terminal; the negative bus bar at the unconnected end is connected with a negative terminal. Because a connecting post is not used, the internal resistance can be reduced, and the battery capacity can be increased.