A kind of optical detection method of diaphragm
A technology of optical detection and optical detection mechanism, which is applied in optical testing of flaws/defects, material analysis by optical means, measurement devices, etc. Defects, time-consuming and labor-intensive problems
Active Publication Date: 2022-01-07
SUZHOU JINGLAI OPTO CO LTD
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Problems solved by technology
Manual inspection is mainly based on naked eye observation. This method of naked eye inspection has large errors and misjudgments, and cannot accurately judge defects in a timely manner, which is time-consuming and laborious; automatic optical inspection uses a line-scan camera plus a backlight. The appearance image of the diaphragm is analyzed by the image processing equipment to determine whether there is a defect, and the automatic optical inspection is efficient and accurate
[0005] The existing automatic optical inspection uses a single backlight, which cannot detect the holes on the diaphragm and the detection of oil stain defects, because the images presented by the camera under the illumination of a single backlight for oil stains and holes are the same and cannot be distinguished holes, oil
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[0036] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only the technical solutions of the present invention. Some, but not all, embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.
[0037] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct...
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Abstract
The present invention relates to the technical field of lithium battery processing and production, and discloses an optical detection method for a diaphragm, including the following steps: S1: providing an optical detection mechanism for a diaphragm, the optical detection mechanism for a diaphragm includes an image acquisition device and a detection light source , the detection light source is located directly below the diaphragm to be detected, including a first light source and a second light source, and the image acquisition device is located above the diaphragm to be detected; S2: sequentially drive the first light source and the The second light source respectively emits first light and second light to the diaphragm to be detected, and the first light and the second light are irradiated on the same position of the diaphragm to be detected; S3: driving the image The acquiring device respectively acquires a first image and a second image of the diaphragm to be detected when the first light is irradiated and when the second light is irradiated; S4: According to the first image and the second image, determine Whether the diaphragm to be detected is defective.
Description
technical field [0001] The invention relates to the technical field of lithium battery processing and production, in particular to an optical detection method for a diaphragm. Background technique [0002] With the development of industries such as mobile phones, tablet computers, and electric vehicles, lithium-ion batteries have also been widely used. Lithium-ion battery is composed of positive electrode, negative electrode, diaphragm (transparent film), and electrolyte. The positive and negative electrodes are soaked in the electrolyte, and lithium ions move between the positive and negative electrodes with the electrolyte as the medium to realize the charge and discharge of the battery. In order to avoid the short circuit of the positive and negative electrodes through the electrolyte, it is necessary to separate the positive and negative electrodes with a separator. The separator is a specially formed polymer film with a microporous structure that allows lithium ions to...
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IPC IPC(8): G01N21/88G01N21/958G01N21/84
CPCG01N21/8806G01N21/958G01N21/8422G01N2021/8809G01N2021/8835
Inventor 马达张延凯
Owner SUZHOU JINGLAI OPTO CO LTD