Vacuum drying machine

Abstract

The invention discloses a vacuum drying machine. The vacuum drying machine comprises a belt conveying mechanism, a feeding mechanism, a vacuum drying box, a burdening mechanism and a discharging mechanism; one end of the belt conveying mechanism is connected to the feeding mechanism, the other end of the belt conveying mechanism is connected to the discharging mechanism, the vacuum drying box is arranged on one side of the belt conveying mechanism, and the burdening mechanism is arranged above the belt conveying mechanism and used for automatically taking and putting an electric core between the vacuum drying box and the belt conveying mechanism; according to the vacuum drying machine, after the electric core flows into the feeding mechanism, the electric core can be subject to full-automatic feeding, vacuum drying and discharging treatment, the work efficiency is greatly improved, and manual cost is reduced; the multilayer heating plate structural design is adopted, the contact type heating manner is achieved through an epoxy resin plate, rapid and uniform temperature rising is achieved, the electric core drying effect is greatly improved, and the work efficiency is further improved.

Description

technical field [0001] The invention relates to the technical field of lithium battery production, in particular to a vacuum dryer. Background technique [0002] Moisture in polymer lithium-ion batteries is an important factor affecting battery performance. Although the battery cell of the polymer lithium ion battery in the prior art uses anhydrous electrolyte, there is still moisture in the battery cell, and the moisture in the battery cell mainly comes from the air. [0003] When the battery core is heated or short-circuited, the water evaporates to form gas, which increases the gas volume inside the battery core, and there is a risk of explosion, which reduces the safety of the battery core. [0004] In order to avoid potential safety hazards caused by the presence of moisture in the battery cell, before injecting liquid into the polymer lithium battery cell, it needs to be dried to remove the moisture in the battery cell. [0005] At present, the lithium battery is usu...

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Problems solved by technology

[0006] In this process, on the one hand, due to the heat radiation method, the temperature in the furnace is obviously not uniform enough, which affects the drying effect; on the other hand, in order to achieve a good drying effect, the entire heating process usually needs to last for 6-8 hours. hours, the heating rate is relatively slow

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