Vacuum baking-drying production line for lithium battery pole piece roll

Abstract

The invention discloses a vacuum baking-drying production line for a lithium battery pole piece roll. The vacuum baking-drying production line is characterized by comprising a nitrogen circulating pipeline, a front door and window, at least two groups of pole piece roll trolleys, a pole piece roll conveying device, a pole piece roll dragging device, a baking tank body, a side door window, an inspection hole, a vacuumizing pipeline, a frame body and a rear door and window; and the structure of the front door and window is same as that of the rear door and window. The lithium battery pole piece roll in the production line is held in the grouped pole piece roll trolleys which can automatically enter the baking tank body, and the baking tank body communicates with the nitrogen circulating pipeline and the vacuumizing pipeline, so that the baking and vacuumizing processes of the pole piece roll can be simultaneously finished within one cavity; and the side door and window and the inspection hole are also formed in one side of the baking tank body, so that the drying degree and condition of the pole piece roll can be monitored at any time, the pole piece roll is prevented from being exposed in the air again, secondary pollution of air to the lithium battery pole piece roll is avoided, and the production efficiency is increased.

Description

technical field [0001] The invention relates to lithium battery production technology, in particular to a lithium battery pole piece roll vacuum baking and drying production line. Background technique [0002] The positive and negative materials used in lithium batteries are all porous materials, most of which have strong porous adsorption characteristics and super large specific surface. If the pores are rich in water vapor and impurities before the battery is made, it will seriously affect the performance indicators of the battery. . At the same time, the lithium battery pole piece is also regarded as the core of the battery, which plays a vital role in the consistency of the battery. The existing drying process of lithium battery pole piece rolls is to manually transport the pole piece rolls to be baked by forklifts and other machinery to the oven for baking. Most ovens use resistance wire radiant heat for baking. The baking efficiency is low, the baking time is long an...

AI Technical Summary

Problems solved by technology

The existing drying process of lithium battery pole piece rolls is to manually transport the pole piece rolls to be baked by forklifts and other machinery to the oven for baking. Most ovens use resistance wire radiant heat for baking. The baking efficiency is low, the baking time is long and the drying is not thorough, and the pole piece rolls after baking are still transported out by forklifts and other machinery, which is likely to cause secondary pollution of the pole piece rolls, and the one-time use of the pole piece rolls in the oven The number of pole piece rolls that can be baked is limited, which cannot meet the continuous production of large factories. Therefore, a production line that does not need manual handling and can evenly bake as many lithium battery pole piece rolls as possible in the pole piece roll baking process is provided. become an urgent problem to be solved in the existing technology

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