Double-channel battery bottom welding device

Abstract

The invention discloses a double-channel battery bottom welding device which comprises a rack, a conveying assembly, a welding assembly, a testing assembly and a groove pressing assembly. The conveying assembly comprises a conveying groove and a pushing part, and two welding assemblies are arranged on the conveying groove in parallel; The testing assembly is provided with a turntable, and the outer side of the turntable is sequentially provided with a tab positioning assembly, a welding spot detection assembly, an insulation pad placement assembly, a short circuit detection assembly and a shunting assembly. The shunting assembly is connected with the testing assembly and the groove pressing assembly. The welding assembly comprises a welding pin clamp, a welding head and a welding air cylinder for driving the welding pin clamp to move in the vertical direction. By arranging the conveying assembly and the welding assembly, the two-channel battery bottom welding device can conduct bottom welding operation on two batteries at the same time, the two batteries are synchronously conveyed forwards through the conveying assembly, and the machining efficiency of battery bottom welding is improved. By arranging the testing assembly and a controller, the welded battery is detected, and the yield of battery production is improved.

Description

technical field [0001] The invention relates to the technical field of battery production, in particular to a dual-channel battery bottom welding device. Background technique [0002] In the production process of cylindrical lithium-ion batteries, the welding of the negative electrode lug and the bottom of the shell is a key process. This process is prone to welding instability or over-welding, resulting in poor welding stability and low pass rate. . Especially for lithium batteries using pure copper tabs, due to the particularity of the material, the copper tabs are more difficult to be welded firmly. Some manufacturers use two welding methods to weld the tabs and the bottom of the shell. The single-station welding device will have the problem of slowing down the battery welding speed, which greatly affects the production efficiency of lithium batteries; and simply adding welding stations The way to improve production efficiency will greatly increase the production cost o...

AI Technical Summary

Problems solved by technology

Some manufacturers use two welding methods to weld the tabs and the bottom of the shell. The single-station welding device will have the problem of slowing down the battery welding speed, which greatly affects the production efficiency of lithium batteries; and simply adding welding stations The way to improve production efficiency will greatly increase the production cost of batteries

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