Lithium battery lamination method and adopted separator membrane turn-over system

Abstract

The invention relates to a lithium battery lamination method and an adopted separator membrane turn-over system. The method comprises vertically arranging a membrane placing apparatus above a lamination table, and making a separator membrane transferred from the membrane placing apparatus and adsorbed on an upper surface of the lamination table; making the lamination table located at the left sideof the membrane placing apparatus, successively completing coating of a plurality of positive and negative pieces, and maintaining the topmost coated piece of the lamination to be a negative piece after the coating is completed; and allowing a membrane cutter to fall and cutting the separator membrane, aerating an airblow pipe, blowing the cut end of the separator membrane from the right side ofthe membrane placing apparatus to the lamination table, and performing rectification, adsorption and positioning. The adopted separator membrane turn-over system includes the lamination table, and a separator membrane turn-over mechanism includes a guide roll and the airblow pipe fixed at two ends of the guide roll. According to the method and system, problems that gaps exist in battery cores andbattery cores are loosen in the prior art are solved. The method and system are beneficial for automatic rectification after a separator membrane is turned over, and the lamination process of tail-free rolling of battery cores is achieved. The separator membrane consumption is saved, and the yield is improved.

Description

technical field [0001] The invention relates to the technical field of lithium battery production, in particular to a method for stacking lithium batteries and a used diaphragm turning system. Background technique [0002] Lithium-ion batteries have already been widely used in mobile phones, notebook computers, power tools, electric vehicles, street lamp backup power, aviation lights, and small household appliances. It can be said that they are currently the largest application group. At the same time, since new energy and environmental protection are the mainstream trend in the future, lithium batteries have become an emerging industry strongly advocated by the state. Therefore, the efficient and automated production of lithium batteries that are both environmentally friendly and high-tech is of great significance. [0003] In the production process of lithium-ion batteries, there are many necessary processes, such as winding, slicing, gluing, gluing, deviation correction, ...

AI Technical Summary

Problems solved by technology

[0004] Those skilled in the art have analyzed the defects of the existing known technologies. In the current production process of lithium battery stacks, it is required to cover the positive electrode sheet with a diaphragm and then stack it with the negative electrode sheet, and at the same time require the negative electrode sheet to be outsourced. This process The traditional production method is to start stacking from the right (as shown in the attached manual figure 1 As shown, the position reference objects such as left and right of the present invention are all lamination platforms), and terminate at the right side simultaneously (as in the description attached figure 2 As shown), it has a diaphragm 53, a negative electrode sheet 52, and a positive electrode sheet 51. The uppermost layer of the cell is the negative electrode sheet 52, and there is no outer coating of the diaphragm ( figure 2 As shown), the tail winding process is required to completely cover the battery cell ( image 3 As shown), the winding needle 3A is covered in the diaphragm when the winding needle 3A is pulled out. After the winding needle 3A is pulled out, there is a gap in the battery cell, which causes the battery cell to be loose. Therefore, a corresponding technical solution is urgently needed to solve this problem. The invention overcomes the above-mentioned problem of loose batteries and saves the amount of diaphragm at the same time

Images