Self-learning winding device and method

Abstract

The invention provides a self-learning winding device and method. The device includes a roller encoder for recording the movement position of the roller, a needle motor encoder for recording the movement position of the winding needle, a virtual spindle, an electronic cam module, and a cam table. , winding control module and self-learning module; the virtual spindle is connected with the electronic cam module, and the electronic cam module and virtual spindle are respectively connected with the winding control module; both the needle motor encoder and the roller encoder are connected with the self-learning module and the winding control module. The module is connected, the self-learning module and the winding control module are also connected with the winding needle motor; the self-learning module is connected with the cam table, and the cam table is connected with the electronic cam module. The self-learning winding device provided by the present invention, on the basis of executing the cam curve, collects the actual line speed and the target line speed for PI calculation, which can adjust the line speed fluctuation caused by the uneven material thickness, the insertion of pole pieces in the middle, etc. cumulative error.

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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