WELDING APPARATUS FOR MANUFACTURING SECONDARY BATTERY, AND WELDING METHOD USING SAME

The present invention relates to a welding apparatus and a welding method for manufacturing a secondary battery, which are capable of preventing deformation of a product due to a pressure applied in all directions or non-uniform welding due to non-uniform pressing to a cover during a process of sealing and fixing the cover to an opening of a main body casing at the time of manufacturing a secondary battery.