Ironing hole needle for lithium battery production

Abstract

The invention relates to an ironing hole needle for lithium battery production. The ironing hole needle comprises a needle head, a needle rod and a connecting ring, wherein the needle head is connected with the needle rod through the connecting ring; the needle head, the needle rod and the connecting ring are coaxially distributed; the length of the needle head is 1-3mm; the needle head has a conical structure; the needle rod has a cylindrical structure; a connecting chamber is arranged in the needle rod; through holes are uniformly distributed in the outer surface; the connecting chamber and the needle rod are coaxially distributed; the through holes are communicated with the connecting chamber; the axes of the through holes are vertical to the connecting chamber; the through holes are spirally distributed around the axis of the needle rod; the diameter of the front end face of the connecting ring is identical to the diameter of the tail end of the needle head; the diameter of the rear end face is identical to the diameter of the needle rod; an arc structure is arranged between the front end face and the rear end face of the connecting ring. The ironing hole needle for lithium battery production has a simple structure, is convenient and flexible in use, has excellent use flexibility and part exchange capacity, can effectively locate the diaphragm in the lithium battery core and can prevent the phenomenon of unstable welding of lithium battery electrode caused by rebound of the diaphragm.

Description

technical field [0001] The invention relates to a welding device, in particular to a perforating needle for lithium battery production. Background technique [0002] In the lithium battery production process, after the electrode winding is completed, in order to meet the needs of the lithium battery negative electrode welding operation, it is often necessary to perform hot hole welding on the lithium battery electrode core through a special boring hole, and place the center position of the lithium battery electrode core The diaphragm is welded to the electrode surface of the lithium battery electrode core to provide good working conditions for the lithium battery negative electrode welding operation. However, it is found in the actual work that due to the structure of the ironing needle equipment currently used, after the ironing operation, Diaphragms often cannot be welded and fixed effectively, welding and fixing is not in place, and the surface of the diaphragm is damaged...

AI Technical Summary

Problems solved by technology

[0002] In the lithium battery production process, after the electrode winding is completed, in order to meet the needs of the lithium battery negative electrode welding operation, it is often necessary to perform hot hole welding on the lithium battery electrode core through a special boring hole, and place the center position of the lithium battery electrode core The diaphragm is welded to the electrode surface of the lithium battery electrode core to provide good working conditions for the lithium battery negative electrode welding operation. However, it is found in the actual work that due to the structure of the ironing needle equipment currently used, after the ironing operation, Diaphragms often cannot be welded and fixed effectively, welding and fixing is not in place, and the surface of the diaphragm is damaged, which will result in the work efficiency of lithium battery negative electrode welding and the product quality of lithium batteries. At the same time, the current ironing pins are often integrated Type structure, the flexibility of use is poor, the ironing operation cannot be flexibly controlled according to the needs of use, and parts of the ironing needle cannot be replaced locally, which is extremely inconvenient to use, and the equipment failure repair rate is relatively low, so for this phenomenon, it is urgent to develop a new type of ironing needle for lithium battery production to meet the needs of actual use

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