A lead-acid battery terminal welding structure

Abstract

The invention discloses a terminal welding structure of a lead-acid accumulator, which comprises a middle cover, wherein a terminal slot is arranged on the middle cover; a lead sleeve hole of a post terminal and a terminal groove are formed in the terminal slot; a lead sleeve is arranged in the lead sleeve hole of the post terminal; a circular groove is formed in the periphery of the bottom of the lead sleeve, a circular bulge is formed on the inner wall of the lead sleeve hole of the post terminal, and the circular bulge is matched with the circular groove; a terminal is arranged in the terminal groove, and a copper piece is fixedly arranged on the terminal; and a funnel-shaped post terminal hole is formed in the other end of the copper piece, and the post terminal hole is sheathed on a part on the upper end of the lead sleeve, which protrudes from the middle cover. The terminal welding structure has the advantages of simplicity, large welding area and strong conductivity, the inclined post terminal hole, the lead sleeve and the post terminal are matched to weld. In addition, the circular groove in the periphery of the lead sleeve is matched with the circular bulge on the inner wall of the lead sleeve hole of the post terminal of the terminal slot, therefore, the lead sleeve structure can be welded without a sealing ring, the acid leakage preventing effect is good, a coloring agent can be directly applied without primer, the cost is saved, and the quality of the accumulator is improved.

Description

technical field [0001] The invention relates to a lead-acid storage battery, in particular to a high-strength welding structure for terminals of the lead-acid storage battery. Background technique [0002] At present, there are two main connection methods for battery poles: one is straight-out type, and the other is "L" type structure. The straight-out structure of the battery terminal is a tinned copper core cast lead base structure, which cannot be cast and welded by placing the copper core on the cast welding bottom mold, which no longer meets the needs of mechanized production, and the "L" type structure currently used The terminals are also cast from copper core and lead base. Due to the influence of the battery space, the lead base of the terminal base of this structure should be relatively thin, the welding connection effect is not good, and the large current discharge performance is poor. Contents of the invention [0003] The object of the present invention is to...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a welding structure for lead-acid battery terminals, which solves the shortcomings of poor welding effect and poor high-current discharge performance in the prior art after the terminal is welded.

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