Welding technology for pure nickel and nickel plated brass material laminated solder paste

Abstract

The invention discloses a welding technology for pure nickel and nickel plated brass material laminated solder paste. The welding technology comprises the following steps of producing a special pure nickel and nickel plated brass material laminated screen board for printing; performing bidrectional printing on nickel sheets or copper cladding nickel sheets by applying a nickel sheet printing fixture; laminating and aligning two nickel sheets with the copper cladding nickel sheets, and allowing the error of the two nickel sheets and the copper cladding nickel sheets after laminating to be smaller than a set tolerance standard; loading and fixing the laminated nickel sheet and copper cladding nickel sheet by using a permanent magnet solder pallet carrier; adjusting the welding temperature, and performing reflow soldering by using a mesh belt solder pallet or a rail solder pallet; and performing heat-sink cooling on the nickel sheet printing fixture by using a high-speed cooling fan, andchecking the quality of laminated and welding nickel sheet products. The welding technology for the pure nickel and nickel plated brass material laminated solder paste can improve the current resistance of the nickel sheets and ensure the welding quality and has wider use range of products; in particular to the design of a lithium battery pack, the manufacturing cost is greatly reduced, and equipment investment is reduced; and in addition, the development speed of new products is high, the investment is low and the quality reliability is higher.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a solder paste welding process for laminating pure nickel and nickel-plated copper materials. Background technique [0002] In the assembly of lithium batteries, a large number of nickel sheets or nickel-plated copper sheets are required to meet the connection of lithium battery packs. In the prior art, laser spot welding is generally used for the production of nickel sheets. Although the precision of this process is relatively high High, but the cost of equipment investment is high, and the production process is complicated, and the product production efficiency is relatively low. [0003] Therefore, the prior art needs to be improved. Contents of the invention [0004] The technical problem to be solved by the embodiments of the present invention is to provide a solder paste welding process for laminating pure nickel and nickel-plated copper to solve the problems existing i...

AI Technical Summary

Problems solved by technology

[0002] In the assembly of lithium batteries, a large number of nickel sheets or nickel-plated copper sheets are required to meet the connection of lithium battery packs. In the prior art, laser spot welding is generally used for the production of nickel sheets. Although the precision of this process is relatively high High, but the cost of equipment investment is high, and the production process is complicated, and the product production efficiency is relatively low

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