Tab strengthened indentation mechanism

Abstract

The invention relates to an electrode lug reinforcing and indentation mechanism. The mechanism is characterized by comprising a second shaft and a fourth shaft, wherein the second shaft and the fourth shaft can rotate in the opposite directions, and the shaft end of the second shaft and the shaft end of the fourth shaft are power input ends; the two ends of the second shaft are rotationally installed in a first bearing pedestal and a second bearing pedestal correspondingly, and the two ends of the fourth shaft are rotationally installed in a third bearing pedestal and a fourth bearing pedestal correspondingly; the second shaft is fixedly provided with a driving roller which is rotated along with the second shaft, and the fourth shaft is fixedly provided with a driven indentation roller which is rotated along with the fourth shaft; and the arrangement positions of the driving roller and the driven indentation roller correspond to electrode lugs on an electrode piece, the roller face of the driven indentation roller or the driving roller is provided with a protruding embossing capable of pressing indentations on the electrode lugs, and the roller face of the driving roller and the roller face of the driven indentation roller are matched to press indentations on the electrode lugs. Indentations can be pressed on the electrode lugs, the electrode lugs can be normally wound along with the electrode piece, and the phenomenon that the electrode lugs are damaged by being impacted or folded is avoided.

Description

Technical field [0001] The invention relates to a tab strengthening indentation mechanism, which belongs to the technical field of lithium battery automation equipment. Background technique [0002] Lithium-ion power battery has high working voltage (3 times that of nickel-cadmium batteries and nickel-hydrogen batteries), large specific energy (up to 165WH / kg, 3 times that of nickel-hydrogen batteries), small size, light weight, and long cycle life , Low self-discharge rate, no memory effect, no pollution, etc., so it is used by many power equipment manufacturers. [0003] The lithium battery market has a variety of product specifications due to personalized settings and other reasons. Many manufacturers not only require the use of low-cost, high-performance winding materials, but also require reasonable technology for winding equipment to roll out high-quality products. In the current die-cutting machine, after the die-cutting of the pole piece, the tab becomes a cantilevered she...

AI Technical Summary

Problems solved by technology

[0003] In the lithium battery market, there are various product specifications due to personalized settings and other reasons. Many manufacturers not only require the use of low-cost, high-performance winding materials, but also require the winding equipment to have a reasonable process and be able to roll out high-quality products. Therefore, In the current die-cutting machine, after the die-cutting of the pole piece, the tab becomes a cantilever sheet. When the operating speed of the equipment is raised again and again, the tab flutters continuously during the winding process, and it is easy to be hit or folded. damage, reducing the yield of the product

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