Production line for improving internal water content of lithium battery, and processing technology thereof

Abstract

The invention discloses a production line for improving the internal water content of a lithium battery. The production line comprises a supporting base, wherein a roller conveyor belt is laid on thesupporting base, a plurality of heating transition bins are arranged on the roller conveyor belt, processing mechanisms are arranged among the heating transition bin mechanisms, and glove boxes sleevethe processing mechanisms; each processing mechanism comprises a roll machine, a die cutting machine, a laminating machine, an ultrasonic welding machine, a first cold and hot press, a top side sealing integrated machine, a second cold and hot press, a liquid injection standing machine and a pre-sealing machine which are sequentially arranged from a feeding end to a discharging end. According tothe invention, all materials of the lithium battery can be baked and dewatered during assembly through the heating transition bins, the periphery of the materials is not wrapped by an aluminum-plasticfilm, the moisture adsorbed by the materials can be effectively removed, and the baking dewatering technology is completed for multiple times, so that the moisture value in the lithium battery is thelowest.

Description

technical field [0001] The invention relates to the technical field of lithium battery production and manufacturing, in particular to a production line for improving the water content inside the lithium battery and a processing technology thereof. Background technique [0002] Lithium batteries have attracted more and more attention from the power industry due to their light weight and large storage capacity. At present, lithium batteries are widely used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, as well as power tools, electric bicycles, electric motorcycles, and electric vehicles. , military equipment, aerospace and many other fields. In the battery industry, green environmental protection has always been a technical problem in the industry. Lithium batteries have always been the first choice for green and environmentally friendly batteries. The production technology of lithium batteries and lithium batteries is c...

AI Technical Summary

Problems solved by technology

[0003] At present, during the manufacturing process of lithium batteries, the internal water content has always affected the performance of the battery. Most of the remanufacturing process is produced in the air (lamination, welding tabs, shell insertion, fixed side sealing), and water vapor in the air will enter In the battery, after the fixed side seal is completed and baked, it enters the glove box after baking, and it is difficult to effectively remove water. If the moisture in the lithium battery is too high, the electrolyte will react with the moisture to generate a small amount of harmful gas and hydrofluoric acid. If the pressure is too high, the internal resistance of the battery will increase, and high current discharge will not be possible, the power of the battery will be reduced, and the quality of the electrolyte itself will be reduced, resulting in poor battery performance, less energy, and reduced lifespan to failure

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