Tab cutting device of lithium battery core and tab cutting equipment using tab cutting device

Abstract

The invention relates to the field of manufacturing of lithium ion power batteries, in particular to a tab cutting device of a lithium battery core and tab cutting equipment using the tab cutting device. The tab cutting device of the lithium battery core comprises a driving mechanism and a tab compressing component, wherein the driving mechanism is used for driving an upper cutter to move up and down; the tab compressing component compressing component comprises a lower cushion block and an upper compressing block; the upper compressing block vertically corresponding to the lower cushion block is arranged on the driving mechanism; the upper compressing block and the upper cutter can move together up and down; a compressible elastic supporting device is arranged between the upper compressing block and the driving mechanism; or the tab cutting device of the lithium battery core is provided with a guide device, an elastic reset device, a jacking mechanism and an elastic supporting device; the guide device is used for guiding the upper compressing block to move up and down; the elastic reset device is used for providing upward elastic support for the upper compressing block; the jacking mechanism is arranged on the driving mechanism in a guide motion manner and can downwards jack the upper compressing block; and the elastic supporting device is arranged between the jacking mechanism and the driving mechanism. By adoption of the scheme, a tab can be automatically compressed in the downcutting process of the cutter.

Description

technical field [0001] The invention relates to the field of manufacturing lithium ion power batteries, in particular to the cutting of tabs of lithium battery cells. Background technique [0002] Aluminum shell square lithium-ion power battery is a new type of battery, which has developed rapidly in recent years. Due to the variety of appearance and size of aluminum shell batteries, there are few equipments used in certain specific processes on the market. In order to improve production efficiency and product quality, it is necessary to increase research and development efforts for various problems in production. For example, the following problems: due to the size difference of different lugs, the front ends of the multi-layer tab laminations are uneven after pre-welding. In order not to affect the subsequent cover plate welding or other processes, the uneven front parts need to be cut Cutting and trimming. At present, scissors, manual paper cutters and other tools are mo...

AI Technical Summary

Problems solved by technology

For example, the following problems: due to the size difference of different lugs, the front ends of the multi-layer tab laminations are uneven after pre-welding. In order not to affect the subsequent cover plate welding or other processes, the uneven front parts need to be cut Cutting and trimming. At present, scissors, manual paper cutters and other tools are mostly used for cutting. The efficiency is low, labor-intensive, and the consistency of cutting is poor. Moreover, because the tabs cannot be pressed and fixed during cutting, the cutting quality is low and still It will affect the next process and ultimately affect the quality of battery products

In the operation of the lithium battery cell tab cutting device disclosed in this patent, it is necessary to firstly manipulate the pressure block control lever to complete the flattening of the tab, and then use the upper and lower cutters to cut the tab, and then manipulate the press after the cutting is completed. The block lever will release the tab, so the operation steps are cumbersome and the structure is complicated

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