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A high-precision defect detection method and device for circular welds

A defect detection, high-precision technology, applied in the direction of measuring devices, optical testing flaws/defects, instruments, etc., can solve problems such as low efficiency, high labor intensity, unstable reliability, etc., achieve high defect recognition accuracy, and improve production efficiency , the effect of improving stability

Active Publication Date: 2022-04-15
SHENZHEN HUAHAN WEIYE TECH
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Problems solved by technology

[0010] The invention provides a high-precision defect detection method, device and computer-readable storage medium for annular welds, which mainly solve the problem that the existing annular welds of cylindrical or button-shaped batteries mainly rely on manual detection, low efficiency, high labor intensity and Technical issues with unstable reliability

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  • A high-precision defect detection method and device for circular welds
  • A high-precision defect detection method and device for circular welds
  • A high-precision defect detection method and device for circular welds

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Embodiment Construction

[0094] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings. Wherein, similar elements in different implementations adopt associated similar element numbers. In the following implementation manners, many details are described for better understanding of the present application. However, those skilled in the art can readily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, and methods. In some cases, some operations related to the application are not shown or described in the description, this is to avoid the core part of the application being overwhelmed by too many descriptions, and for those skilled in the art, it is necessary to describe these operations in detail Relevant operations are not necessary, and they can fully understand the relevant operations according to the description in the specification and genera...

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Abstract

A high-precision defect detection method and device for a circular weld, wherein the method includes: acquiring a height image of the battery surface; performing height calibration on the height image; acquiring the weld area in the height image after height calibration, and pressing the preset The step size of the predetermined size is taken as the comparison unit, and the defect discrimination step is performed on the comparison unit until the entire weld area is traversed; the defect severity map is calculated; the distance connectivity analysis is performed on the defect area, and the defects whose distance is less than the set threshold Area merging, calculating the area of ​​the merged defect area, and judging whether there is a defect in the weld according to the area of ​​the merged defect area. The detection method of the present application has high speed and high precision, and is not affected by ambient light and human subjective factors. The detection efficiency and detection accuracy of weld defects.

Description

technical field [0001] The invention relates to the technical field of new energy battery weld defect detection, in particular to a high-precision defect detection method and device for annular welds. Background technique [0002] With the continuous update and iteration of wearable electronic products, their volume and weight tend to be lighter and smaller, which puts forward higher requirements for the energy storage technology of products. Under the background of the rapid development of new energy industry technology, the energy storage capacity of new energy batteries gradually increases as their volume gradually shrinks, especially columnar or button-shaped new energy batteries (such as TWS (True Wireless Stereo, True Wireless Stereo) ) The battery of the Bluetooth headset) The manufacturing process tends to be mature. In the manufacturing process of columnar or button-shaped new energy batteries, the gap between the shell and the cover is generally sealed by laser we...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/95G01N21/01
CPCG01N21/95G01N21/01
Inventor 谢飞黄涛杨洋
Owner SHENZHEN HUAHAN WEIYE TECH
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