Production device and method of packaging film of lithium battery

Abstract

The invention provides a production device and method of a packaging film of a lithium battery. The production device comprises an uncoiling unit, a first coating unit, a first drying unit, a second coating unit, a second drying unit, a uniform heating unit, a thermal lamination unit, a cooling unit and a coiling unit that are sequentially arranged along the processing sequence of a to-be-treatedbasic film. The production device and the production method have the beneficial effects that 1, the device and the method are safe and environmentally friendly, required raw materials and a productionprocess do not need an adhesive or an organic solvent, and no VOC (volatile organic compound) is emitted; no curing chamber is needed, so that the requirements of air exhaust, fireproofing and anti-explosion on a production workshop are low; 2, the production device is high in production efficiency and low in material wastage, and an aluminum-plastics composite film is formed once; compared withmultiple-step processing, links of transfer, curing and the like of the materials and semi-products are saved, and the processing wastage of the materials and the semi-products are reduced; 3, the product property is excellent, so that the aluminum-plastics composite film processed by adopting a thermal lamination manner is strong in deep drawing resistance and corrosion resistance; 4, the occupied area is small, so that the design requirement on a required workshop is low.

Description

technical field [0001] The invention relates to the technical field of lithium batteries, in particular to a lithium battery packaging film production device and method. Background technique [0002] Aluminum-plastic composite film packaging is an important packaging method for lithium batteries. Compared with aluminum shells, steel shells and cylindrical packaging, aluminum-plastic composite film packaging has the advantages of good safety performance, high energy density, small internal resistance, and flexible design. The current The processing method of aluminum-plastic composite film usually has the following procedures: 1. Coating passivation solution on both surfaces of aluminum foil; Surface coated with adhesive composite polypropylene film, five, aging for 5 to 8 days. This processing method has many disadvantages: [0003] The production cycle is long, and the adhesive needs to be cured to exert a good bonding effect. Usually, the total time for the two processes...

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Problems solved by technology

[0007] In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a lithium battery packaging film production device and method for solving the problems existing in the prior art when the lithium battery packaging film production device performs aluminum-plastic composite film packaging. Problems such as long production cycle, large production area, high workshop design requirements and unfriendly environment

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