Lithium battery core lamination device and use method thereof

Abstract

The invention discloses a lithium battery core laminating device, which comprises a diaphragm wound on an unwinding device, a tension mechanism connected with a winding device through the diaphragm, and a plurality of positive electrode sheets and a plurality of negative electrode sheets which are regularly arranged on the two sides of the diaphragm, wherein each positive electrode sheet and eachnegative electrode sheet are connected with a clamping device, each positive electrode sheet and each negative electrode sheet are correspondingly provided with a sheet laminating drill rod, each sheet laminating drill rod is a square cylinder, each positive electrode sheet and each negative electrode sheet are attached to the side surface of the corresponding sheet laminating drill rod, separating type laminating devices are further arranged on the two sides, close to the unwinding device, of the diaphragm, a plurality of telescopic protruding plates are further arranged on the separating type laminating devices, a telescopic clamp arranged in the tension mechanism is connected with the diaphragm, a plurality of tension sensors are regularly distributed on the telescopic clamp, and the separating type laminating devices move in the direction of the tension mechanism. According to the equipment, rapid lamination action of the multi-electrode sheet and the diaphragm can be completed simultaneously in one process, so that the lamination accuracy is improved, and the preparation efficiency of the lithium battery is greatly improved.

Description

technical field [0001] The invention relates to the fields of lithium battery manufacturing technology and lithium battery lamination technology, in particular to a lithium battery cell lamination device and a method for using the same. Background technique [0002] "Lithium battery" is a type of battery that uses lithium metal or lithium alloy as the negative electrode material and uses a non-aqueous electrolyte solution. Due to the very active chemical properties of lithium metal, the processing, storage and use of lithium metal have very high environmental requirements. With the development of science and technology, lithium batteries have become the mainstream now. The core of battery lithium is the battery cell, which refers to a single electrochemical cell containing positive and negative electrodes, with small particle size, large specific surface area, white color, high purity, and significantly improved electrochemical performance. [0003] At present, the product...

AI Technical Summary

Problems solved by technology

However, for the equipment of these two stacking machines, the stacking table is heavy and the mass of the diaphragm unwinding mechanism is large, so that the stacking process cannot run at high speed, and each pole piece is stacked in a reciprocating manner, and the stacking efficiency is too low , and there is a dislocation between the pole piece and the diaphragm, so there are defects such as low production speed and poor lamination accuracy

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