Automatic detection method of battery positive-negative electrode lug terminal length

Abstract

The invention discloses an automatic detection method of battery positive-negative electrode lug terminal length. A detection system comprises an image processing unit, a motion control unit, a real-time monitoring unit and an upper computer. The image processing unit conducts software processing analysis on collected images and conducts detection on electrode lug size. A bottom datum line I8, a line segment I4, a line segment I5, a line segment I6, and a line segment I7 are found through an image identifying method. The top point R1 of a positive electrode lug and the top point R2 of a negative electrode lug are respectively determined through an intersection point of the line segment I4, the line segment I5, the line segment I6, and the line segment I7, then the distance D1from the R1 to the bottom datum line I8 and the distance D2 from the R2 to the bottom datum line I8 are respectively calculated, the values of the D1 and the D2 are the length of the positive electrode lug terminal and the length of the negative electrode lug terminal. The automatic detection method of the battery positive-negative electrode lug terminal length can achieve fast and accurate automatic detection of the length of the battery positive electrode lug terminal and the length of the battery negative electrode lug terminal.

Description

technical field [0001] The patent of the invention relates to a product size detection method, in particular to a machine vision-based automatic detection method for the length of positive and negative battery lug terminals, 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: figu...

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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