How to detect a battery shell defect?

In the past, manual visual inspection was the main detection method chosen by battery manufacturers to detect defects in battery shells.

What is a battery shell?

The battery shell is an important component of battery products, and its quality determines the quality of the entire battery product.

Do battery shells have defects?

In terms of defect detection in battery shells, the major relevant studies have mainly focused on photovoltaic cells or button cells, whereas there are few studies on cylindrical lithium batteries and defects of the end face of the battery shell.

Why is detecting lithium battery shell defects important?

The detection of lithium battery shell defects is an important aspect of lithium battery production. The presence of pits, R-angle injuries, hard printing, and other defects on the end face of lithium battery shells severely affects the production safety and usage safety of lithium battery products.

What is the dataset for battery shell defects?

Battery shell defect dataset As there is no publicly available dataset for battery case end-face defects, images of lithium battery steel case end-face defects were obtained using laboratory lithium battery defect-detection equipment, the composition of which is shown in Fig. 9.

Is there a defect-detection model for lithium battery steel shells?

In this study, we propose an effective defect-detection model, called Sim-YOLOv5s, for lithium battery steel shells. In this model, we propose a fast spatial pooling pyramid structure, SimSPPF, to speed up the model and embed the attention mechanism convolutional block attention module in the backbone.