Tab/adhesive tape position detection system and method based on CCD

Abstract

The invention provides a tab / adhesive tape position detection system and method based on a CCD. The system comprises an optical imaging system and an image processing system, wherein the optical system comprises a CCD camera, an illumination part and an installing part, the CCD camera is arranged on the side of a tab walking track and coincides with the normal direction of a target detecting position, the illumination part corresponds to the CCD camera and is used for providing an illumination environment for work of the CCD camera, and the installing part is connected with the CCD camera andthe illumination part. The method comprises the steps that S1, an image of the target detecting position is acquired and is fed back to the image processing system; S2, the acquired image is preprocessed, then the positions of a tab and an adhesive tape of a cell cell are detected and are compared with corresponding threshold values respectively according to detected relative positions, and judgement is made. The image of the protective adhesive tap bonded on the tab is acquired by utilizing a CCD imaging mode, quick and accurate detection of the adhesive tape position is achieved through processing of the image processing system, and accordingly the quality of the cell cell is ensured.

Description

technical field [0001] The invention relates to a system and method based on CCD tab and / or tape position detection, belonging to the field of automation equipment, in particular to the field of lithium battery manufacturing equipment. Background technique [0002] In the manufacture of lithium batteries, a process needs to weld the tabs to the pole pieces. In order to prevent the welded part from damaging the diaphragm and affecting the quality of the battery cell, a protective tape is often pasted on the welded part. The presence or absence of tabs / tapes and Whether the position is correct seriously affects the quality of the battery core. Therefore, it is necessary to detect the condition of the tab / tape on the pole piece before winding the pole piece. In the prior art, optical fiber irradiation is used to detect the presence or absence of the tab. However, the optical fiber cannot realize the detection of the position of the tab / tape; there is also a probe-type detection...

AI Technical Summary

Problems solved by technology

[0002] In the manufacture of lithium batteries, a process needs to weld the tabs to the pole pieces. In order to prevent the welded part from damaging the diaphragm and affecting the quality of the battery cell, a protective tape is often pasted on the welded part. The presence or absence of tabs / tapes and Whether the position is correct seriously affects the quality of the battery core. Therefore, it is necessary to detect the condition of the tab / tape on the pole piece before winding the pole piece. In the prior art, optical fiber irradiation is used to detect the presence or absence of the tab. However, the optical fiber cannot realize the detection of the position of the tab / tape; there is also a probe-type detection method, which can detect the presence or absence and approximate position of the tab / tape according to whether the probe is conductive, but this detection method is different every time it is detected. Need to stop and then detect: that is, it is necessary to suspend the transmission of the pole piece, then detect, then transmit, and then pause for detection

With the development of technology, the aforementioned detection methods can no longer meet the requirements, we need more accurate and faster detection methods

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