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Burr detection device and method for pole piece of lithium battery

A detection method, lithium battery technology, applied in the direction of measuring devices, optical testing flaws/defects, material analysis through optical means, etc., can solve problems such as undetectable burr length, battery heating, explosion, etc., to solve the problem that burrs cannot be detected Effect

Pending Publication Date: 2019-02-12
DONGGUAN DEER IND SERVICES
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Problems solved by technology

The burrs generated by the slitting of the lithium battery pole piece will penetrate the separator in the subsequent lamination or winding process and cause a short circuit, causing the battery to heat up and explode, endangering the personal safety of the user
[0003] When the burr detection mechanism in the prior art detects, the camera is generally installed vertically, and a plane mirror inclined to the corresponding pole piece is arranged below the corresponding camera. Will appear as a point in the camera, resulting in the length of the burr parallel to the pole piece cannot be detected

Method used

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  • Burr detection device and method for pole piece of lithium battery
  • Burr detection device and method for pole piece of lithium battery
  • Burr detection device and method for pole piece of lithium battery

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with accompanying drawing:

[0027] ROI (region of interest), region of interest. In machine vision and image processing, the area to be processed is outlined from the processed image in the form of a box, circle, ellipse, irregular polygon, etc., which is called the region of interest, ROI. Various Operators and functions are commonly used in machine vision software such as Halcon, OpenCV, and Matlab to obtain the ROI of the region of interest and perform the next step of image processing.

[0028] Blob (Binary large object) refers to a binary area obtained from an image. Generally speaking, the binary area is the foreground in the image. In Halcon, a Blob is an extracted region. Blob analysis refers to the analysis of characteristics such as area and perimeter center of gravity of the binary area.

[0029] Blob (BlobAnalysis) is to analyze the connected domain of the same pixel in the image, and t...

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Abstract

The invention provides a burr detection device and a method for a pole piece of a lithium battery, and comprises a first camera, a second camera, a plane mirror, and a light source. The plane mirror is inclined to correspond to the side edge of the pole piece; the first camera is arranged above the plane mirror, and can acquire burrs not parallel to the pole piece through the plane mirror; the lens of the second camera is inclined downwards by 30 degrees to 45 degrees, corresponding to the side of the pole piece; and the second camera can obtain burrs parallel to the pole piece. The light source is arranged on one side of the pole piece, and can be provided for the first camera and the second camera. In addition, the invention further relates to a burr detection method for the pole piece of the lithium battery. According to the burr detection device and the method for the pole piece of the lithium battery, the device and method can quickly obtain the image of the pole piece for the detection and the analysis for the burr; not only obtain the burrs perpendicular to the pole piece, but also can obtain the burrs parallel to the pole piece; therefore, the problem that the burrs parallel to the pole piece cannot be detected is solved; and the length of the burrs in the image can be quickly determined by the burr detection method.

Description

technical field [0001] The invention relates to a lithium battery pole piece, in particular to a burr detection device and method for a lithium battery pole piece. Background technique [0002] Lithium battery is currently the most widely used consumer power source and power source in the world. In order to enhance the global competitiveness of the lithium battery manufacturing industry, the precision requirements of each process machine are getting higher and higher, and the manufacturing process is also increasingly intelligent to ensure the quality and quality of lithium batteries. performance. The burrs generated by the cutting of the lithium battery pole piece will penetrate the separator in the subsequent lamination or winding process and cause a short circuit, causing the battery to heat up and explode, endangering the personal safety of users. [0003] When the burr detection mechanism in the prior art detects, the camera is generally installed vertically, and a pla...

Claims

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Application Information

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IPC IPC(8): G01N21/89G01N21/892
CPCG01N21/8914G01N21/892G01N2021/8924
Inventor 薛平
Owner DONGGUAN DEER IND SERVICES
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