Battery Module Lead Inspection Using Multi-Stage Vision Checks
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Solution Overview
Problem
Existing battery module inspection methods rely on manual visual inspections, leading to human errors and increased labor costs, and there is a need for a method to prevent erroneous inspections during the manufacturing of battery modules.
Innovation Solution
A battery module inspection method utilizing vision cameras to automatically inspect the number, positions, and bending states of electrode leads in stacked battery cells through multiple vision inspection processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual visual inspection is used to inspect battery cells, then labor flexibility is maintained, but inspection accuracy decreases and human errors occur
Solution Approach 1:
The patent replaces manual visual inspection with an automated vision inspection system using cameras and image processing algorithms. The system captures images of electrode leads and automatically detects their positions, numbers, and bending states through computer vision technology, eliminating human error while maintaining inspection capability.
Solution Approach 2:
The vision inspection system creates digital copies (images) of the physical electrode leads and performs inspection on these copies through image processing. This allows multiple inspection parameters (position, number, bending) to be analyzed from the captured images without physically manipulating the battery cells.
2Reliability
If multiple inspection parameters are checked manually, then comprehensive inspection is achieved, but inspection time increases
Solution Approach 1:
The vision inspection system performs multiple inspection operations (detecting position, number, and bending of electrode leads) continuously and simultaneously from captured images. The image processing algorithm analyzes all parameters in one inspection cycle, eliminating the sequential manual checking process and reducing total inspection time while maintaining comprehensive coverage.
Solution Approach 2:
The patent combines multiple inspection functions (position detection, number counting, bending detection) into a single integrated vision inspection system. All these functions operate simultaneously on the same captured images, merging what would otherwise be separate manual inspection tasks into one automated process.
3Productivity
If automated vision inspection is implemented, then inspection accuracy improves and human error is eliminated, but equipment cost increases
Solution Approach 1:
The vision inspection system is designed to perform multiple inspection functions using the same hardware platform (cameras, image processing unit). The system can detect position, number, and bending of electrode leads, as well as inspect other battery components, making the equipment versatile and reducing the need for multiple specialized devices.
Data Source
AI summary
Discussed is a battery module inspection method that includes a first vision inspection process of inspecting a cell stack in which multiple battery cells are stacked, wherein a number and positions of electrode leads included in the multiple battery cells, respectively, are inspected through a vision camera, and a second vision inspection process of inspecting the number and bending states of the electrode leads provided in the multiple battery cells, respectively, through the vision camera after the first vision inspection process.