A lithium battery cell stacking device and method of using the same

Abstract

The invention discloses a lithium battery cell stacking device, which comprises: a diaphragm wound on an unwinding device, a tension mechanism connected to the winding device through the diaphragm, and a number of positive electrode sheets regularly arranged on both sides of the diaphragm and several Negative electrode sheet, each positive electrode sheet and negative electrode sheet are connected with a clamping device, each positive electrode sheet and negative electrode sheet are correspondingly provided with a laminated brazing, the laminated brazing is a square cylinder, each positive electrode sheet and negative electrode sheet are connected to the corresponding The sides of the laminated brazing are fitted together; a separate lamination device is also provided on both sides of the diaphragm near the unwinding device, and a number of telescopic raised plates are also provided on the separate lamination device; The telescopic fixture is connected with the diaphragm, and several tension sensors are regularly distributed on the telescopic fixture, and the separated laminating device moves toward the direction of the tension mechanism. This equipment can realize the rapid lamination action of multi-pole sheet and diaphragm at the same time in one process, which improves the accuracy of lamination and greatly improves the production efficiency of lithium batteries.

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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