Lug processing method

Abstract

The invention provides a lug processing method, which comprises the following steps: a. a processing belt with certain width is determined on the edge of a current collector of a pole piece; b. according to the needed position, size and shape, the processing belt of the current collector is cut by laser so as to obtain the lug integrative with the current collector. The lug is processed on the current collector by using the lug processing method and is integrative with the current collector; the lug and the current collector form a very reliable electrical property connection; the processed lug has non deckle edge and is beneficial to increase the quality of a roll core; the processing process is simplified; working procedures such as mechanical cutting of the lug, the lug being welded on the current collector, protective adhesive plaster being pasted on the lug after the lug being welded on the current collector and the like and possibly occurring technology shortcomings are omitted; the processing method is beneficial to increase producing efficiency and save cost; the processing method can be implemented by adding a laser cutting device on the corresponding position of the existing coiling production line; therefore, the lug processing and the electrical core coiling can be carried out on the same production line.

Description

【Technical field】 [0001] The invention relates to battery manufacturing technology, in particular to a tab processing method with good performance. 【Background technique】 [0002] In the prior art, the tabs on the battery pole pieces are generally independent of the pole pieces, and need to be unwound from the tabs in separate rolls and mechanically cut into strips (see figure 1 and figure 2 The lug 2) in the battery is welded to the corresponding position on the current collector. [0003] figure 1 and figure 2 It shows the situation after the tab 2 is welded to the current collector 10 . Before the battery core is wound, it is necessary to perform mechanical cutting of the tab 2, welding the tab 2 to the current collector 10, welding the tab 2 to the current collector 10, and then pasting the protective tape. On the one hand, numerous processes will affect the improvement of production efficiency, and on the other hand, it will bring some unstable quality factors, s...

AI Technical Summary

Problems solved by technology

On the one hand, numerous processes will affect the improvement of production efficiency, and on the other hand, it will bring some unstable quality factors, such as poor welding, false welding, false welding, leakage of protective tape, bubbles on the protective tape and other process defects, which will affect the performance of the battery. Stability is very bad

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