Method for detecting pole piece folding and platform for detecting pole piece folding

Abstract

The invention provides a method for detecting pole piece folding and a platform for detecting pole piece folding. According to the method for detecting pole piece folding, a pole piece is arranged between an X-ray source and a detection device, rays irradiated by the X-ray source on the pole piece and the periphery of the pole piece are projected on the detection device and converted into visible light through the detection device, and then a detection image of the pole piece is generated. According to the method for detecting pole piece folding, the X-ray source and the detection device are adopted, the pole piece is irradiated through the X-ray source, rays are converted into visible light through the detection device, the image is generated, different states can be displayed on the folding area on the pole piece and the generated image, and thus the folding condition of the pole piece can be detected and analyzed.

Description

technical field [0001] The invention relates to the technical field of battery material detection, in particular to a method for detecting the folding of pole pieces. In addition, the invention also relates to a platform for detecting pole piece turning over. Background technique [0002] With the development of new energy vehicles, electric vehicles powered by lithium-ion batteries have begun to be widely used. The power battery pack of an electric vehicle is composed of a single battery, and a single battery is composed of several battery cell pole groups. During the production process of each battery cell pole group, taking the stacking process as an example, it is necessary to detect each of the battery cell pole groups. Whether the state of the pole piece meets the process standard, if the state of the pole piece is turned over, it is a substandard product, which needs to be detected and scrapped. [0003] At present, most of the methods for detecting the turning of t...

AI Technical Summary

Problems solved by technology

However, the traditional x-ray detection is judged by the imaging of the four corners of the detection pole group; when the pole piece turns over in a deep position, due to the limitation of the detection angle and magnification, it may not be possible to detect the deep position Turnover, or it is impossible to detect the more serious turnover, therefore, there is no guarantee of zero missed killing, resulting in the outflow of defective products

Moreover, through the X-ray four-corner detection method, there are four imaging components. When the consistency of the detection angles of the four imaging components is insufficient, the imaging quality is difficult to guarantee, which also causes deviations in the detection results.

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