Packaging method of lithium ion battery, and lithium ion battery

Abstract

The invention relates to a field of lithium ion battery designing, and discloses a packaging method of a lithium ion battery, and a lithium ion battery. The lithium ion battery comprises a battery core, an aluminum-plastic film, electrolyte, an anode lead, and a cathode lead. An independent battery core chamber and an independent air sac chamber are formed in an aluminum-plastic film housing; the battery core chamber is sealed, and the air sac is provided with pores; the battery core and the electrolyte are sealed in the battery core chamber; the anode lead and the cathode lead are fixed on one end of the battery core, and are respectively connected to an anode sheet and a cathode sheet in the battery core; lead gum outer surface layers on the anode lead and the cathode lead are hot-melted and combined with the aluminum-plastic film housing; the ends of the anode lead and the cathode lead which are connected to the battery core are sealed in the battery core chamber, and other ends protrude on an end of the battery core chamber; the air sac is positioned on the end opposite to the anode lead and the cathode lead. With the structure provided by the invention, cost of the aluminum-plastic film can be saved, production efficiency can be improved, and electrical properties of the lithium battery product can be improved.

Description

technical field [0001] The invention relates to the field of lithium ion battery design, in particular to a lithium ion battery packaging method and the lithium ion battery. Background technique [0002] Due to the advantages of light weight, small size, large capacity and fast charging speed, lithium-ion batteries are widely used in various digital and communication products such as laptop lights. [0003] With the shortage of energy and the highlight of environmental pollution, lithium-ion batteries have become the current trend as a new type of power source. Aluminum-plastic film flexible packaging lithium-ion batteries are currently commonly used as a power ion battery. [0004] The structure of the current aluminum-plastic film flexible packaging lithium-ion battery is mainly as follows: figure 1 shown, see figure 1 , in the process of manufacturing soft-pack lithium-ion batteries, it is necessary to carry out secondary vacuum sealing, and an airbag 101 is formed on t...

AI Technical Summary

Problems solved by technology

[0006] 1. In the process of putting lithium-ion batteries in batches into the cabinet for formation testing, any adjacent lithium-ion batteries are easy to scratch each other, resulting in scratched defective products

[0007] 2. The cut-off airbag 101 in the prior art has a relatively large area, so the waste of aluminum-plastic film materials in the manufacture of the prior art is relatively serious, resulting in a relatively high cost of the soft-packed lithium-ion battery

[0008] 3. The cell body of the lithium-ion battery made by the prior art has poor liquid absorption capacity, and the performance of the finished lithium-ion battery is poor

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