Electrode Plate Imaging Layout for Accurate Stitched Defect Detection
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Solution Overview
Problem
Current image acquisition apparatuses for electrode plates in battery production have complex structures, high costs, and poor image quality, leading to low defect detection accuracy and increased safety risks from defective electrode assemblies.
Innovation Solution
An image acquisition apparatus using two light sources and a lens with a reflective region allows a single camera to capture stitched images of both positive and negative electrode plates, simplifying the structure, reducing costs, and improving image quality by avoiding interference between reflection paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a traditional image acquisition apparatus is used, then images of electrode plates can be obtained, but the structure becomes complicated and costs increase
Solution Approach 1:
The patent combines multiple light sources and camera systems into a single integrated image acquisition apparatus. By merging the functional elements (light sources, lens, camera) into one unified device with a simplified structure, the patent reduces device complexity while maintaining the ability to capture high-quality images of electrode plates from multiple angles simultaneously.
Solution Approach 2:
The image acquisition apparatus is designed with multi-functionality to perform various detection tasks. The single apparatus can capture images of both positive and negative electrode plates, provide multiple viewing angles, and perform defect detection, thereby reducing the need for multiple separate devices and simplifying the overall system structure.
2Measurement precision
If traditional image acquisition methods are used, then detection can be performed, but defect detection accuracy is low
Solution Approach 1:
The patent segments the image acquisition process into multiple independent components (separate light sources for different electrode plates, distinct optical paths). This segmentation allows each component to be optimized for its specific function while maintaining overall system simplicity, thereby improving defect detection accuracy without proportionally increasing device complexity.
Solution Approach 2:
The patent introduces an intermediary lens system that facilitates the capture of images from multiple angles simultaneously. The lens acts as a mediator between the light sources and camera, enabling high-quality image acquisition while keeping the apparatus structure relatively simple and avoiding direct complexity in the light path arrangement.
3Illumination intensity
If multiple light sources are used to illuminate electrode plates, then image quality improves, but interference between reflection paths occurs
Solution Approach 1:
The patent extracts and separates the optical paths of different light sources by using distinct reflective regions on the lens. Each light source has its own dedicated reflective region, which isolates its reflection path from other light sources. This extraction prevents interference between multiple light paths while maintaining high illumination quality for defect detection.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances defect detection accuracy, reduces the likelihood of defective electrode assemblies, and improves battery safety by providing high-quality images of electrode plates.
Implementation Method 1
the first light source emits the first light at an angle such that the first light is able to be reflected to the camera via the first electrode plate
Implementation Method 2
the lens includes a reflective region, where the reflective region is arranged at an angle to reflect the second light reflected by the second electrode plate to the camera
Data Source
AI summary
An image acquisition apparatus includes a camera, a first light source, a second light source, and a lens. The first light source is configured to emit first light toward one electrode plate so as to illuminate a local portion of the electrode plate, and the first light source emits the first light at an angle such that the first light is able to be reflected to the camera via the electrode plate. The second light source is configured to emit second light toward the other electrode plate so as to illuminate a local portion of the other electrode plate. The lens includes a reflective region, where the reflective region is arranged at an angle to reflect the second light reflected by the second electrode plate to the camera, such that the camera acquires a stitched image of the positive and negative electrode plates.