A lithium battery production process and equipment

Abstract

The invention discloses a production process for a lithium battery. Through the steps of pre-compounding, stacking and winding, cutting, reclaiming, continuous processing and finished product assembly performed in sequence, each pole piece and a separator are stacked, processed and formed, and finally assembled. For battery pre-products, the lithium battery production process is simple and efficient, which can realize the continuous production and manufacture of lithium battery products, greatly improve the battery production efficiency, and can simplify the entire process flow and reduce the labor intensity of staff accordingly. The invention also discloses a lithium battery production equipment used in the above-mentioned lithium battery production process.

Description

technical field [0001] The invention relates to the technical field of lithium battery production and processing, in particular to a lithium battery production process. The present invention also relates to a lithium battery production equipment used in the above-mentioned lithium battery production process. Background technique [0002] In the current production and processing process of lithium batteries, the cells of lithium batteries need to be arranged in sequence with positive pole pieces, separators, and negative pole pieces. Among them, the winding battery production process is to fix the central battery and then wind the pole piece and the separator together to form a battery assembly. This method is mostly used in the production and processing of cylindrical batteries, but this production process will lead to battery cells. The internal resistance is high, and it is only suitable for the production of small-sized battery models; the production process of laminated...

AI Technical Summary

Problems solved by technology

Among them, the winding battery production process is to fix the central battery and then wind the pole piece and separator together to form a battery assembly. This method is mostly used in the production and processing of cylindrical batteries, but this production process will lead to The internal resistance is high, and it is only suitable for the production of smaller battery models; the production process of laminated batteries is to pre-cut the pole pieces and separators into the same specification, and then stack them sequentially from bottom to top, and weld the tabs. Finally, it is packaged to form battery components. This process is commonly used in the production and processing of prismatic batteries. However, due to the periodic pauses in the operation of the stacking mechanism in this way, the overall process production efficiency is low.

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