Pole piece folding detection method and device, detection equipment and storage medium

Abstract

The invention relates to the technical field of batteries, in particular to a pole piece turnover detection method and device, detection equipment and a storage medium, and the pole piece turnover detection method of a battery cell pole group comprises the following steps: collecting an actual pole piece image of the battery cell pole group; inputting the actual pole piece image into a pre-trained pole piece turnover prediction model to obtain a plurality of initial prediction frames in the actual pole piece image, and determining a final prediction frame corresponding to each pole piece of the battery cell pole group according to the non-maximum suppression score of each initial prediction frame; and calculating the confidence value of the final prediction frame corresponding to each pole piece, identifying the category of the final prediction frame corresponding to each pole piece, and detecting a folded pole piece in the battery cell pole group when the confidence value is greater than or equal to a preset threshold value and the category is a folded category. The method can automatically and accurately detect the folded pole piece in the battery cell pole group, improves the detection efficiency, reduces the detection cost, and improves the overall quality of a product.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a method, a device, a detection device and a storage medium for detecting pole piece folding. Background technique [0002] Power battery is the core component of electric vehicles. If the power battery is unqualified, it will directly affect the performance and driving safety of electric vehicles. Therefore, the detection of power batteries before leaving the factory is very important. [0003] Among them, the pole piece turning detection is one of the important detections of the power battery detection, because the power battery pack is composed of a single battery, and a single battery is composed of several battery cell pole groups, and each battery cell pole group is in the production process. Lamination technology is usually used, so it is necessary to detect whether the state of each pole piece in the battery pole group meets the process standard, that is, to detect whet...

AI Technical Summary

Problems solved by technology

[0004] In related technologies, it is usually manually detected whether there is a folded pole piece in the electrode group of the battery core. However, the method of manually detecting the pole piece turned over not only wastes a lot of manpower and material resources, but also has low detection efficiency, and the detection efficiency is low. The accuracy is poor, and it is impossible to accurately detect whether there is a folded pole piece in the battery pole group, which greatly reduces the overall quality of the product

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