Full-automatic winder for cell core of lithium cell

Abstract

The invention provides a full-automatic winder for a cell core of a lithium cell. The full-automatic winder comprises a case, a control mechanism, a pole piece material box mechanism, two sets of diaphragm automatic unwinding devices, a pole piece cutting-off mechanism and a winding part, wherein the control mechanism is arranged at the left end of the top of the case; the pole piece material boxmechanism is used for supplying and storing positive and negative pole pieces; the two sets of diaphragm automatic unwinding devices are used for placing a diaphragm material tape; the pole piece cutting-off mechanism is used for cutting off positive and negative material tapes, so as to form the positive and negative pole pieces; the winding part is arrayed in the middle of the case, and is usedfor receiving the positive and negative pole pieces delivered from the pole piece cutting-off mechanism and a diaphragm delivered from a diaphragm unwinding device, so as to wind to form the cell core. The diaphragms provided by the diaphragm automatic unwinding device above the left side of the case are located between the positive pole piece and the negative pole piece and enter the winding parttogether; the diaphragm provided by the diaphragm automatic unwinding devices at the middle area of the left side of the case is located on the outer side of the positive pole piece and enters the winding part; the positive pole piece and the negative pole piece separate two layers of the diaphragms and then are wound to form the cell core and the winding procedure is completed.

Description

technical field [0001] The invention relates to the technical field of battery production, in particular to a fully automatic lithium battery cell winding machine. Background technique [0002] The winding mechanism is the processing and manufacturing equipment of power lithium battery cells in the prior art. The winding mechanism usually uses square or oval winding needles to wind lithium battery cathode sheets, anode sheets and separators together into battery cells. When winding, the winding must be reliably clamped without slipping, and the battery cell must be reliably separated from the winding assembly at the end of the winding, and the cell must not be damaged or deformed, and the diaphragm, cathode sheet, and anode sheet Cannot be shifted. [0003] At present, the winding of the existing square lithium battery cell is to separate the cutting sheet and the stacking sheet, and the cutting method of the pole sheet is divided into two types: die cutting and laser cutti...

AI Technical Summary

Problems solved by technology

[0004] The manufacturing method of the above-mentioned electric core and the equipment used for it separate the cutting and lamination, so that operation steps such as pole piece transfer, transfer, and secondary positioning need to be added between the two links, and in these steps, manual labor is required. cooperation, high labor costs

At the same time, in the case of multiple transfers, dumping and positioning, especially when manual cooperation is required, the reliability of the equipment will decrease during this process, and the damage rate of the pole piece will also increase, which will increase the defectiveness of the product. Rate

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