N-shaped univolume diaphragm collecting-winding lamination stacking machine and lamination stacking method

Abstract

The invention relates to an N-shaped univolume diaphragm collecting-winding lamination stacking machine. The N-shaped univolume diaphragm collecting-winding lamination stacking machine comprises a diaphragm unreeling buffer unit, a 90-degree rotary sucking piece fitting and laminating unit, a diaphragm pulling-buffering winding unit and a large carrier plate. The lamination stacking machine is characterized in that the diaphragm unreeling buffer unit comprises an unreeling motor (1), an expanding sleeve (3) which is connected with the diaphragm unreeling buffer unit and is used for storing a diaphragm (2), a transitional roller (4) which is corresponding to the diaphragm and a tension buffer device roller (5); and the devices are vertically installed on a same base plate and share one installing reference plane. The diaphragm is laminated in the N-shaped winding process by symmetrically arranging rotary lamination units on the two sides of a winding unit, winding a certain angle (reciprocated plus / minus 180 degrees), and then simultaneously winding pole pieces to the diaphragm from two sides.

Description

technical field [0001] The invention relates to a film winding and lamination machine and a lamination method, in particular to a mechanism and method of an N-shaped automatic lamination machine suitable for lithium-ion battery lamination. Background technique [0002] At present, in the lithium battery manufacturing industry, there is a battery manufacturing method that is realized by lamination manufacturing technology (that is, the battery positive electrode sheet, separator, and battery negative electrode sheet are stacked alternately to form a battery electrode sheet group. Between each positive / negative electrode sheet The battery manufacturing method separated by a separator). In the early days, this kind of battery manufacturing method was completed by manually placing the negative electrode, separator, and positive electrode in the jig in sequence, and after the stacking was completed, the battery electrode was manually wrapped with the separator, and the electrode ...

AI Technical Summary

Problems solved by technology

In this way, the weight and volume of the machine equipment are large, the cost of the machine is high, the price is expensive, and the efficiency cannot meet the expectations of the existing manufacturers for production. At the same time, the noise and inertia in the reciprocating motion are relatively large, and the outer packaging of the diaphragm is not tight and easy to loose, resulting in subsequent operations. inconvenient

[0004] In the prior art, there is also a winding lamination machine that clamps the battery pole piece by a clamping manipulator and rotates 180 degrees in one direction. Its disadvantages are: there is a lot of waste of diaphragm, which leads to an increase in the width of the battery after winding and lamination, and the suction cup Alternately adsorb the positive / negative electrode sheets, causing the positive / negative electrode sheets to powder each other, which in turn affects the overall manufacturing effect of the battery

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