Method for packaging negative pole lithium band of lithium battery

Abstract

The invention discloses a packing method of a lithium battery cathode lithium strip, including the following steps: firstly, a lithium strip is enwound on a winding core to form a lithium strip winding disc inside a drying room, and the winding disc is placed inside a soft plastic packaging bag to carry out encapsulation and form a soft packing lithium strip winding disc; secondly, after the softpacking lithium strip winding disc is horizontally overlapped and filled in a can, the can is sealed. The method adopts the plastic winding core of lithium strip, and the lithium strip is directly enwound on the plastic winding core to form the lithium strip winding disc, thereby reducing the packing cost and occupied space, and saving the package resources; the soft plastic packaging bag is directly used in the drying room for encapsulating the lithium strip winding disc, the addition of inert gas is not needed, thereby reducing the cost, being not easily damaged, improving the isolation property, and being capable of effectively avoiding the contact of metal lithium with air and vapor; therefore, the packing method has high strength and high isolation property, thereby effectively preventing the influences on packages and inner object performance due to collision, extrusion, rain, and the like, in the processes of transportation and storage.

Description

Lithium battery anode lithium tape packaging method technical field The invention relates to a packaging method for lithium metal, in particular to a packaging method for lithium metal strips for negative electrodes of lithium batteries. Background technique At present, due to the relatively active characteristics of metal lithium, it is very easy to oxidize with water, and even cause violent combustion. The metal lithium strip used in the negative electrode of a primary lithium battery needs to be isolated from water vapor during storage and transportation to avoid exposure to the air. Therefore, it must be strictly sealed and packaged. At present, most of them are vacuum-filled with inert gas flexible packaging, separated by soft gaskets, and packaged in sealed iron drums for external use. The disadvantages are: 1. The packaging strength is low. During transportation and handling, the flexible packaging material is prone to mechanical damage, gas leakage, and the surfac...

AI Technical Summary

Problems solved by technology

The disadvantages are: 1. The packaging strength is low. During transportation and handling, the flexible packaging material is prone to mechanical damage, gas leakage, and the surface of metal lithium is oxidized.

Affect the use of metallic lithium as the negative electrode of the battery

2. Due to the large space occupied by the inflatable and soft septa, and the gap between the lithium ribbon coil and the lithium ribbon wastes a lot of packaging space, the transportation and storage costs increase

3. The shelf life of packaging storage is short. Due to the poor barrier property of the packaging material structure to water vapor, metal lithium will gradually oxidize with the storage time.

4. Occupy a large number of winding reels, increase production costs and occupy funds and resources

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