JPH061691B

PURPOSE:To improve the work efficiency and reduce the production cost by forming an inter-cell connection section connecting both straps of a positive electrode and a negative electrode, welding electrode plate groups, and connecting cells. CONSTITUTION:When adjacent electrode plate groups 4 are welded and connected, straps 8c for connecting the welding straps 8a and 8b of electrode plate groups 4 and inter-cell electrode plate groups can be easily welded to each other in the same process, thus the work efficiency is improved. Two patch metals 7 are extracted in the separating direction after welding is completed, thus the patch metals 7 can be easily removed from below inter-cell connection sections 8c, and good inter-cell connection section 8c are formed. No electrode pole connected to a strap 8 is used, thus the setting and welding work of the electrode pole and the material and production cost are not required, and the defective welding of the electrode pole is prevented. The labor for the production work and the production cost are reduced accordingly.