Battery pole piece manufacturing production line and pole piece manufacturing process thereof

Abstract

The battery pole piece manufacturing production line comprises a horizontally-arranged machine table and a rack vertically arranged on one side of the machine table, and further comprises a feeding mechanism, a driving mechanism, a pole lug cutting mechanism, a traction mechanism and a pole piece cutting mechanism which are sequentially arranged at intervals in the linear direction. The pole piece belt automatic material changing device realizes automatic material changing of the pole piece belt, avoids shutdown of the whole line, improves the capacity of the whole line, has the functions of active traction and cleaning of the pole piece belt, effectively ensures the surface flatness and cleanliness of the pole piece belt, realizes automatic cutting of the pole lug, cutting dust removal and automatic leading-out of the waste material of the pole lug cutting, and improves the production efficiency of the pole piece belt. The tab cutting efficiency and the surface cleanliness are effectively improved, and automatic cutting of the pole piece with the groove body and the pole piece is achieved.

Description

technical field [0001] The invention relates to the field of lithium-ion power batteries, in particular to a battery pole piece production line and a pole piece production process suitable for the lithium-ion power battery pole piece production process. Background technique [0002] Lithium battery refers to batteries containing lithium in the electrochemical system, including metal lithium, lithium alloys, lithium ions, and lithium polymers. Lithium batteries can be roughly divided into two categories: lithium metal batteries and lithium ion batteries. Lithium battery is a rechargeable battery that mainly relies on lithium ions to move between positive and negative electrodes to work. A battery that generally uses a material containing lithium as an electrode is a representative of a modern high-performance battery. As the country vigorously promotes the development of new energy, the demand for lithium-ion power batteries in all walks of life is increasing day by day. In...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the lead-out process of pole piece strips, there are the following technical difficulties that need to be solved: 1. In the high-speed automatic production line of pole piece production, the requirements for the feeding efficiency of pole piece strips are high, and pole piece strips are generally wound on material rolls. After the pole strip on the roll is used up, the empty roll is usually removed manually and reinstalled on the full roll. During the replacement of the roll, the material cannot be supplied normally, resulting in the shutdown of the whole line. Therefore, it is necessary to solve the problem of automatic replacement of the pole strip. ;2. Due to the very high requirements on the surface cleanliness of the pole piece, the surface cleaning problem must be solved in the process of exporting the pole piece belt to ensure the surface cleanliness of the pole piece belt surface; 3. Since the pole piece belt is exported to each processing station The lead-out path taken is long, so the unevenness of the surface of the pole piece bag caused by the change of internal tension often occurs, which affects the subsequent tab cutting and pole piece cutting accuracy, so it is necessary to solve the lead-out on the lead-out path of the pole piece belt Traction issues, in order to provide the pull-out power of the pole piece belt while ensuring the consistency of the internal stress of the pole piece belt and the flatness of the surface of the pole piece belt

[0005] Regarding the tab cutting process, there are the following technical difficulties that need to be solved: 1. Powder will be generated during the tab cutting process, which is easy to remain on the surface of the pole piece, and the pole piece has extremely high requirements on surface cleanliness, so it is necessary to solve the extreme The problem of pollution caused by the residue or particle adhesion on the surface of the strip due to tab cutting; 2. The flaky waste generated during the tab cutting process of the pole strip needs to be exported at the same time as cutting to avoid remaining in the tab. strip surface, so it is necessary to solve the problem of automatic removal of tab cutting waste

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