Automatic detection method of battery positive pole and negative pole tab-film heights

Abstract

The invention discloses an automatic detection method of battery positive pole and negative pole tab-film heights. A detection system comprises an image processing unit, a motion control unit, a real-time monitoring unit and a host computer. The image processing unit is used for carrying out software processing analysis on collected images and detecting tab-film sizes: a bottom datum line I8 and line segments I9, I10, I11, I12, I13 and I14 are found through an image recognition method. Negative pole tab-film peaks R5 and R6 are determined through intersection points between the line segment I9 and the line segments I10 and I11, positive pole tab-film peaks R7 and R8 are determined through intersection points of the line segment I12 and the line segments I13 and I14, the distances d1, d2, d3 and d4 from the R5, R6, R7 and R8 to the bottom datum line I8 are computed respectively, and the distance values are the pole tab-film heights. The method can achieve quick, accurate and automatic detection of the pole tab-film heights.

Description

technical field [0001] The patent of the present invention relates to a product size detection method, in particular to a machine vision-based automatic detection method for the height of positive and negative battery ear glues, which belongs to the field of product detection. Background technique [0002] Tabs are a raw material for the production of lithium-ion polymer batteries, such as mobile phone batteries, Bluetooth batteries, and notebook batteries used in daily life. The battery is divided into positive and negative poles, and the tab is the metal electric body that leads the positive and negative poles out of the battery cell. In the production process of mobile phone batteries, measuring the size of the positive and negative tabs of the battery is a very important process before battery packaging. Batteries of different specifications have different process requirements for the size of the tabs. [0003] The appearance of the battery to be tested is as follows: ...

AI Technical Summary

Problems solved by technology

[0004] At present, in the battery production process, most companies usually rely on traditional measurement methods for the size detection of tabs, such as using tools such as micrometers, vernier calipers or gauges, which require a lot of labor to complete, which not only increases labor costs and management costs, and due to the fatigue and instability of the human eye, the accuracy of detection cannot be guaranteed

In addition, with the expansion of production scale and the improvement of production line speed, manual inspection has great limitations in speed, which cannot meet the speed requirements of modern large industrial production lines.

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