Sealed lead sour accumulator welding clamp and welding process thereof

Abstract

The invention discloses a sealed lead acid battery welding fixture and a welding process; the welding fixture comprises two welding comb plates, a positive welding comb plate and a negative welding comb plate, which comprise a vacant comb plate groove, a vacant comb plate tooth, a column and a locating plate. The vacant comb plate groove is arranged on the vacant comb plate tooth. The vacant comb plate is connected with the locating plate through the column. A busbar, a designed detail part and a tab seam matched with the tab of the plate are formed between the comb plate groove and the vacant comb plate tooth. The sealed lead acid battery welding fixture also comprises a locking strip. The locking strip is provided with a bayonet which is corresponding to the tab seam of the two welding comb plates. The welding process comprises plate wrapping, comb plate locking, locking strip arranging, flow welding, lead ash cutting and comb plate disassembling, battery shell setting, joint welding, soot blowing, cap checking, short circuit checking and battery assembling. The traditional processe of comb plat box setting, polar post arranging and parts butt welding, and the step of false welding checking are avoided. The production efficiency is improved.

Description

technical field [0001] The invention relates to a welding jig for a sealed lead-acid storage battery and a welding process for welding a sealed lead-acid storage battery using the welding jig. Background technique [0002] The welding of the terminal pole or butt welding pole and the bus bar of the valve-regulated sealed lead-acid battery is a key process in the battery production. At present, traditional comb boards and comb board boxes are generally used, and the electrode group is placed in the comb board box upright, so that the electrode ears of the electrode plates are perpendicular to the comb board box, and the tabs are upward, and the connecting poles or poles are placed on the comb board parts. The process of butt welding the poles and then performing welding. Since the battery electrode group is placed in the comb box, there are the following technical defects during the welding process: [0003] 1. During the welding process, the lead liquid can easily flow int...

AI Technical Summary

Problems solved by technology

[0003] 1. During the welding process, the lead liquid can easily flow into the lower part of the busbar, causing a short circuit of the electrode group;

[0004] 2. During the welding process, it is difficult to control the thickness of the busbar. If it is too thick, it will increase the weight of the battery and waste raw materials (lead); if it is too thin, it will cause the busbar to be fused during the high-current discharge of the battery, causing the battery to be scrapped;

[0005]3. During the welding process, the lead oxide film formed on the surface of lead and lead alloy will hinder the fusion of lead solution and tab, and lead slag and Welding defects such as virtual welding lead to an increase in the internal connection resistance of the battery, an increase in the voltage drop when the battery is discharged, a decrease in the corrosion resistance of the connectors, a low battery capacity, a shortened life, a decrease in high-current discharge performance, and even scrapping the battery

[0006] In addition, the welding process flow chart of the traditional connection method between the battery pole and the bus bar is as follows: figure 1 As shown, the steps are as follows: pack the board, put in the board box, clamp the board, place the clip, place the pole and butt welding parts, burn welding, cut the lead slag and remove the board, check the virtual welding, and install the battery case , continuous welding, soot blowing, cover correction, short circuit detection, and finally battery assembly, the process is cumbersome and the production efficiency is relatively low

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