Self-learning winding device and method

Abstract

The invention provides a self-learning winding device and a self-learning winding method. The device comprises a roller encoder used for recording the motion position of a roller, a winding needle motor encoder used for recording the motion position of a winding needle, a virtual main shaft, an electronic cam module, a cam meter, a winding control module and a self-learning module, wherein the virtual main shaft is connected with the electronic cam module; the electronic cam module and the virtual main shaft are respectively connected with the winding control module; the winding needle motor encoder and the roller encoder are connected with the self-learning module and the winding control module; the self-learning module and the winding control module are connected with a winding needle motor; the self-learning module is connected with the cam meter; and the cam meter is connected with the electronic cam module. According to the self-learning winding device provided by the invention, the actual linear velocity and target linear velocity can be acquired for performing PI operation on the basis of executing a cam curve, linear velocity fluctuation caused by reasons such as non-uniform material thickness and middle inserted pole pieces can be adjusted, and the accumulated error is eliminated.

Description

technical field [0001] The invention belongs to the technical field of battery and capacitor winding, and relates to a battery and capacitor winding control method and device. Background technique [0002] In the manufacturing process of batteries and capacitors, it is necessary to wind the anode foil, separator and cathode foil together to form a battery cell. One of the cores of the process is to keep the linear speed of the material unwinding during the winding process constant, so that the front end unwinds Good tension control effect can be achieved. For round needles, as the winding length increases, the winding radius becomes larger. If the needle speed is constant, the line speed will become larger; for special-shaped needles, if the needle speed is constant, the winding radius The sudden change of the line speed will cause the line speed to fluctuate violently in one cycle. When the winding speed is increased, the tension is difficult to control. [0003] Chinese ...

AI Technical Summary

Problems solved by technology

[0006] The speed change is controlled by the standard speed model, and the geometric shape data of the winding needle needs to be obtained in advance, which cannot flexibly adapt to various special-shaped winding needles; in addition, as the number of winding layers increases, due to the tension, elasticity, and bending degree of the winding material, etc. , the shape of the actual winding will change, and modeling is difficult to simulate this deformation, which will eventually lead to fluctuations in line speed

[0007] In addition, through the feed-forward control after the trial winding, it is necessary to accurately obtain a copy of the position data of the material length encoder and the servo motor shaft when the winding material is equal in length during the trial winding. If the winding radius of the special-shaped winding needle changes drastically , the line speed will change drastically during the trial winding, and it is difficult to collect accurate one-part data when the line speed is high, resulting in a discount in the final line speed control effect; The linear speed error caused by uneven pole pieces or material thickness cannot be eliminated, and these factors will lead to differences in the winding shape during the actual winding process and the trial winding process, and the errors will accumulate. The longer the winding length, the lower the control effect. worse

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