METHOD FOR WELDING DISSIMILAR METALS, DISSIMILAR METALLIC BUSBAR MANUFACTURED USING SAME, AND SECONDARY BATTERY COMPRISING SAME

摘要

The present invention relates to a method for welding dissimilar metals, which includes the steps of: preparing a dissimilar metallic busbar comprising a first member formed of a first metal and having a plate shape and a second member formed of a second metal, having a plate shape, and disposed on the undersurface of the first member; folding one side of the dissimilar metallic busbar such that a portion of the second member is located on a portion of the top surface of the first member; welding a lead formed of the first metal on the top surface of the first member; and welding a lead formed of the second metal on the second member located on a portion of the top surface of the first member. The present invention is advantageous in that the invention is able to overcome problems such as the occurrence of cracks or rapid progression of corrosion in conventional welding methods and, in addition, the invention allows a clad metal of an over-lay type to be welded with a lead such that the invention is economically outstanding and the invention is able to increase convenience of welding.