Resistance welding equipment for battery tabs

Abstract

The invention relates to the field of resistance welding, in particular to resistance welding equipment for battery tabs. The invention aims to provide resistance welding equipment for battery tabs. The resistance welding equipment for the battery tabs comprises a welding wire pulling and positioning system and the like; and a welding system is connected with a power system. Electric wire welding is conducted on the tabs of lithium batteries in a resistance welding mode, so that accurate and stable welding which cannot be achieved by a traditional welding means is achieved; meanwhile, the temperature of the lithium batteries is monitored in real time in the welding process to avoid explosion caused by the fact that the temperature of the lithium batteries is too high in the welding process; and the melting of welding wires is strictly positioned and controlled, so that the irregular flow of liquid after the welding wires are molten is reduced, the welding area of the wires is increased, the connection between the battery tabs and the wires is tight, and tin sheets are prevented from falling off in the welding process.

Description

technical field [0001] The invention relates to the field of resistance welding, in particular to a resistance welding equipment for battery tabs. Background technique [0002] Resistance welding refers to the method of using the resistance heat generated by the current passing through the weldment and the contact as the heat source to locally heat the weldment and simultaneously pressurize it for welding. When welding, no filler metal is required, the productivity is high, the deformation of the weldment is small, and it is easy to realize automation; resistance welding uses the resistance heating effect generated by the current flowing through the contact surface of the workpiece and the adjacent area to heat it to a molten or plastic state to form a metal bond a method of [0003] Before using the power lithium battery, wires need to be welded on the two tabs to achieve long-distance power transmission. However, the welding of lithium batteries requires strict operations...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the power lithium battery, before using it, it is necessary to weld wires on the two tabs to achieve long-distance power transmission, but the welding of lithium batteries requires strict operations, and traditional resistance welding methods cannot do this to the tabs of lithium batteries. Accurate and stable welding, and the tin sheet will fall off during the welding process, causing damage to the lithium battery. At the same time, mechanical welding methods cannot use flux for fast and stable welding, making the connection between the battery tab and the wire insufficient. tightness, the wires are prone to fall off, the purpose of the present invention is to provide a resistance welding equipment for battery tabs

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