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Scraping knife control method and pole piece coating scraping method

A control method and scraper technology, applied in cleaning methods and utensils, chemical instruments and methods, cleaning methods using tools, etc., can solve inaccurate control, difficult implementation, and difficulty in determining the relationship between input compensation value and output deviation value And other issues

Active Publication Date: 2021-09-07
ZHUHAI COSMX BATTERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this control method is to adjust the displacement of the scraper according to the pressure value. In practical applications, it is difficult to determine the relationship between the input compensation value and the output deviation value of the closed-loop control. It is difficult to implement and the control is not accurate.

Method used

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  • Scraping knife control method and pole piece coating scraping method
  • Scraping knife control method and pole piece coating scraping method
  • Scraping knife control method and pole piece coating scraping method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Combine below figure 2 with image 3 , the scraper control method of this embodiment will be described. In the sheet making process, when the pole piece is sent to the scraper position by the sheet feeding mechanism, the scraper is located above the pole piece. At this time, the position (initial position) of the scraper is the first waiting position A. The steps of the control method of the scraper are as follows :

[0039]S1. The controller sends a position command to the lifting motor driver, controls the lifting motor 5 to operate in position mode, and drives the scraper 1 to move vertically from the first waiting position A to the approaching position B (the approaching position is higher than the first waiting position) through the lifting motor 5 The position is closer to the pole piece), after the scraper 1 moves to the position B, the lifting motor driver controls the lifting motor 5 to stop, and feeds back the positioning completion signal to the controller...

Embodiment 2

[0049] In the actual production process, there may be a situation where the coating on the pole piece cannot be completely removed by one scraping, so the scraping blade can perform multiple scraping actions in the scraping area. Combine below Figure 4 , to describe the method of scraping off the pole piece coating that needs to be scraped multiple times. The lowering control process of the scraper when scraping multiple times is the same as the lowering control process of the scraper when scraping once, that is, the steps S1 to S4 are the same. The pole piece coating scraping method of this embodiment includes the following steps: the pole piece is sent to the scraper position by the sheet feeding mechanism, the scraper is located above the pole piece, and the position of the scraper at this time is the first waiting position A;

[0050] S1. The controller sends a position command to the lifting motor driver to control the lifting motor to operate in position mode. The lift...

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Abstract

The invention discloses a scraping knife control method and a pole piece coating scraping method. A first motor operates in a position mode to drive a scraping knife to move to an approaching position, and then operates in a torque mode to drive the scraping knife to move so that the scraping knife can be inserted into a coating to be scraped, the real-time pressure value of the scraping knife is collected and compared with a pressure control interval, pressure compensation is not needed to be carried out when the real-time pressure value is in the pressure control interval, the current position of the scraping knife serves as a scraping area starting point and is stored, and pressure compensation is carried out when the real-time pressure value is not in the pressure control interval; Updating is carried out on the torque set value according to the pressure compensation value, then the updated torque set value serves as a torque instruction signal, returning to and executing the previous step are carried out; after the scraping area starting point is stored, the first motor operates in a position mode to drive the scraping knife to move to the scraping area starting point; and a second motor drives the scraping knife to horizontally move from the scraping area starting point to a scraping area ending point, and the scraping knife resets. According to the method, the position of the scraping knife is accurately and efficiently controlled in a control mode of combining a position mode and a torque mode.

Description

technical field [0001] The invention belongs to the technical field of lithium battery manufacturing, and in particular relates to a scraper control method for scraping off a coating on a pole piece and a method for scraping off the coating on a pole piece. Background technique [0002] In the existing tab welding process, the pole piece is generally sprayed with an insulating medium through the entire section of the coating machine, and then the coating at the welding position of the tab is scraped off, and then the tab is welded in the area where the coating was scraped off. The more common method of coating scraping is to use a scraper to scrape off the coating. After the scraper descends to the coating scraping area of ​​the pole piece, insert it into the coating, keep the pole piece still, and then control the horizontal movement of the scraper, and the horizontal movement of the scraper Scrape off the coating on the pole piece. In the process of scraping off the elect...

Claims

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Application Information

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IPC IPC(8): B08B1/00B08B13/00
CPCB08B13/00B08B1/165
Inventor 陈彩虹吴剑君朱玉琪蒋欢曾玉祥
Owner ZHUHAI COSMX BATTERY CO LTD
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