Packaging device for lithium battery

Abstract

The invention discloses a packaging device for a lithium battery. The device comprises a packaging device, a placing device and a conveyor belt, wherein the placing device is arranged on one side of the packaging device, the conveyor belt is arranged on one side of the placing device, the packaging device comprises a shell, a PLC is arranged on one side of the shell and a vacuumizing pump is arranged on the other side. A first motor drives a clamp group to rotate and a sixth hydraulic rod drives the clamp group to lift, so that the lithium battery is conveyed and packaged conveniently, the whole process is smooth, efficient and rapid and convenient for scaled production; the lithium battery enters the shell from top to bottom, so that air bubbles are prevented from being generated in the lithium battery as air enters the shell quickly, and the air bubbles can be discharged upward under the influence of vacuum pressure in the moving process of the lithium battery from top bottom. Gas inthe lithium battery is expelled favorably by arranging rollers, a pressure plate and an ultrasonic sensor, so that a trouble that a head needs to be adjusted as a conventional packaging device aims to be suitable for lithium batteries of different thicknesses and heights is avoided.

Description

technical field [0001] The invention relates to the field of lithium battery processing, in particular to a lithium battery packaging device. Background technique [0002] In the production of soft-pack lithium batteries, the electrolyte needs to be injected into the battery cells, and then the aluminum-plastic film of the batteries is sealed. The existing lithium batteries are generally packaged manually or automatically after the liquid injection is completed. However, Whether it is manual packaging or automatic packaging, it is carried out under normal atmospheric pressure. However, liquid injection under normal pressure is easy to generate air bubbles in the battery cell, and these bubbles will remain inside the battery cell permanently. If not removed, it will affect the electrical performance of the lithium battery and reduce the quality of the lithium battery. Therefore, in order to clean out the air bubbles in the lithium battery cell, it is generally necessary to p...

AI Technical Summary

Problems solved by technology

However, liquid injection under normal pressure is easy to generate air bubbles in the battery cell, and these bubbles will remain inside the battery cell permanently. If not removed, it will affect the electrical performance of the lithium battery and reduce the quality of the lithium battery.

Therefore, in order to clean out the air bubbles in the lithium battery cell, it is generally necessary to pump air on the lithium battery before packaging to release all the air bubbles; Lithium batteries entering and leaving the vacuum casing from below will also cause air bubbles. If the vacuum casing covers the packaging device from top to bottom, it will also cause downward wind, causing air bubbles to enter the interior of the lithium battery, and adjust the sealing head according to the size of the lithium battery. High and low are also troublesome

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