Electrode Assembly Inspection with Adjustable Lighting Angles
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Solution Overview
Problem
Current methods for inspecting electrode assemblies in secondary batteries, such as using X-ray generators and 3D vision equipment, are expensive and inefficient.
Innovation Solution
A 2D vision inspection apparatus with optimized lighting and mechanical parts, including a tilting device, is used to inspect electrode assemblies, providing efficient and cost-effective inspection comparable to 3D vision systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If X-ray generator and 3D vision equipment are used for inspection, then measurement precision and reliability are improved, but device complexity and cost increase
Solution Approach 1:
The patent uses 2D vision equipment to capture images of electrode tabs, creating a simplified optical copy of the inspection target. Multiple 2D images taken at different angles are processed to reconstruct three-dimensional information, replacing expensive X-ray 3D vision equipment with affordable 2D cameras while maintaining inspection accuracy
Solution Approach 2:
The patent replaces complex X-ray generation and detection systems with a simpler optical imaging system using 2D cameras. The mechanical complexity of X-ray equipment is substituted with optical components and image processing algorithms that achieve comparable measurement precision at lower cost and complexity
2Measurement precision
If X-ray equipment is used for inspection, then measurement precision is improved, but loss of time and productivity decrease
Solution Approach 1:
The patent employs periodic action by rapidly capturing multiple 2D images of electrode tabs from different angles in succession. The 2D vision equipment takes a series of quick snapshots that are then processed to generate three-dimensional inspection data, significantly reducing inspection time compared to traditional X-ray methods while maintaining measurement precision
Solution Approach 2:
The patent skips the time-consuming X-ray exposure and processing steps by using 2D vision equipment that captures inspection data almost instantaneously. The system rushes through the inspection process by taking multiple rapid 2D images and processing them in real-time, achieving both high precision and fast throughput
3Device complexity
If 2D vision equipment is used for inspection, then device complexity and cost are reduced, but measurement precision and image quality deteriorate
Solution Approach 1:
The patent compensates for the limitations of 2D vision equipment by introducing temporal and angular dimensions. Multiple 2D images are captured from different angles and at different time points, and through image processing algorithms, these multi-dimensional data are fused to reconstruct accurate three-dimensional information about electrode tabs, thereby maintaining measurement precision while using simple 2D equipment
Solution Approach 2:
The patent changes the parameters of the inspection system by using multiple 2D images with varying angular parameters and temporal parameters. By adjusting and processing images taken at different angles and times, the system achieves high measurement precision with simple 2D vision equipment, transforming the limitation of 2D imaging into an advantage through parameter variation
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
The apparatus achieves efficient and cost-effective inspection of electrode assemblies by ensuring uniform light distribution and adjustable angles, reducing inspection time and equipment layout, while maintaining image quality.
Implementation Method 1
a light configured to radiate light onto the electrode assembly
Data Source
AI summary
An apparatus for inspecting an electrode assembly of a secondary battery includes: a table configured to receive an electrode assembly that is to be inspected; a light configured to radiate light onto the electrode assembly; a lighting holder configured to support the light; a distance adjustment portion configured to adjust a distance between the lighting holder and the electrode assembly; and a tilting portion configured to adjust an angle at which the lighting holder radiates light onto the electrode assembly. The tilting portion rotates the light together with the lighting holder.