Corner terminal of storage battery

Abstract

The invention provides a corner terminal of a storage battery. The corner terminal of the storage battery is manufactured by the steps of melting a lead alloy and forming a blank through pouring, performing cold-press extrusion forming on the poured blank through an extrusion mold, and then further forming the blank by trimming extruded burrs; the pressure of the extrusion mold is 63T-100T. According to the cold-pressed corner terminal, the poured blank is only extruded and formed in a cold pressed mode by use of the extrusion mold; although the pattern of change is simple, the resulting technical effect is completely different, and the obtained part is compact in structure, free of bubbles at the internal section and smooth in internal and external surfaces; due to the extrusion mold pressure of 63T-100T, the yield of the extruded blanks can be 100%. Compactness inspection, a thermal drying-resistant test, an immersion test and metallurgical structure analysis all prove that the compactness of the cold-pressed terminal is better than that of a pressure-cast terminal; as a result, a good acid leakage prevention effect can be achieved.

Description

technical field [0001] The invention relates to a connecting piece of a storage battery, in particular to an angle terminal of the storage battery. Background technique [0002] The corner terminal of the battery is in the shape of an "L" corner, one end is used to connect the electrodes of the battery, and the other end is connected to the wire, such as figure 1 As shown in the figure, terminal 1 in the figure is connected to the electrode of the battery, and the other terminal 2 is connected to the wire; at present, the angle terminals used for the battery are all die-casting, because the density is insufficient, such as figure 2 As shown, there are pores inside and outside, and the pores expand to form bubbles after being heated, resulting in the phenomenon of acid creeping; among the failure modes of after-sales faulty parts in the battery industry, terminal acid creeping is a typical failure mode. [0003] At present, the corner terminal of the battery adopts the proc...

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Problems solved by technology

[0002] The corner terminal of the battery is in the shape of an "L" corner, one end is used to connect the electrodes of the battery, and the other end is connected to the wire, such as figure 1 As shown in the figure, terminal 1 in the figure is connected to the electrode of the battery, and the other terminal 2 is connected to the wire; at present, the angle terminals used for the battery are all die-casting, because the density is insufficient, such as figure 2 As shown, there are pores inside and outside, and the pores expand to form bubbles after being heated, resulting in the phenomenon of acid creeping; among the failure modes of after-sales faulty parts in the battery industry, terminal acid creeping is a typical failure mode

[0003] At present, the corner terminal of the battery adopts the process method of lead alloy-melting-die-casting. Due to the "L" corner shape of the corner terminal of the battery, the fluidity of the lead billet is poor during the extrusion process, and the method of one-way cold extrusion is difficult. forming

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