Prismatic Battery Can Inspection with Adjustable Mirror Imaging
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Solution Overview
Problem
Existing inspection devices struggle to capture clear internal images of prismatic cans in secondary batteries, leading to inefficiencies and inaccuracies in defect detection.
Innovation Solution
An internal inspection device with dual imaging modules and adjustable mirrors and lighting units that capture images from multiple angles without altering the can's posture, using a first camera and lighting unit for large surfaces and a second camera and lighting unit for small surfaces, with adjustable mirrors and lighting units to optimize image capture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single imaging module is used to capture internal images of the can, then the device structure is simple, but the image quality and inspection accuracy are insufficient
Solution Approach 1:
The imaging system is divided into multiple independent imaging modules (first imaging module with first camera for large surfaces, second imaging module with second camera for small surfaces). Each module captures images from specific angles and surfaces, allowing comprehensive coverage without requiring a single complex system. This segmentation enables specialized optimization for different inspection regions while maintaining overall system manageability.
Solution Approach 2:
The inspection device is designed with multi-functional capabilities through its modular architecture. The system can inspect various surfaces (large surfaces, small surfaces, bottom surface) using different imaging modules, and the mounting unit can adapt to different can positions. This multi-functionality allows a single device to perform comprehensive internal inspection without requiring multiple specialized devices.
2Productivity
If the can posture is changed to capture different internal surfaces, then comprehensive coverage is achieved, but inspection time increases and productivity decreases
Solution Approach 1:
The system employs dynamic mirror adjustment mechanisms that can change the angle and position of mirrors to redirect light paths. This allows the imaging modules to capture different surfaces (large surfaces, small surfaces, bottom surface) by dynamically adjusting mirror orientations rather than physically moving or rotating the can itself. The first mirror adjustment unit and second mirror adjustment unit enable flexible reconfiguration of the inspection geometry.
Solution Approach 2:
Mirrors serve as intermediary elements that redirect light from the imaging modules to access different internal surfaces of the can. By using mirrors as intermediaries to change light paths, the system can inspect multiple surfaces without directly manipulating the can's position or posture. This intermediary approach maintains the can in a fixed inspection position while still achieving comprehensive surface coverage.
3Measurement precision
If lighting units are fixed in position, then the device structure is simple, but image quality and illumination uniformity are insufficient
Solution Approach 1:
The lighting system incorporates adjustable positioning capabilities for the lighting units. The first and second lighting units can be positioned and oriented flexibly to provide optimal illumination for different surfaces being inspected. This dynamic positioning allows the lighting units to adapt to various inspection geometries and surface orientations, ensuring uniform and high-quality illumination without requiring an overly complex fixed multi-point lighting arrangement.
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
Enhances inspection speed and accuracy by capturing comprehensive internal images without changing the can's posture, reducing the time required for inspection and improving defect detection.
Implementation Method 1
a first mirror, and a first mirror adjustment unit; the first mirror adjustment unit is configured to adjust the position and/or angle of the first mirror
Implementation Method 2
a second mirror, and a second mirror adjustment unit; the second mirror adjustment unit is configured to adjust the position and/or angle of the second mirror
Implementation Method 3
a first coaxial lighting unit configured to include a plurality of first lighting units, and the plurality of first lighting units configured to be individually controlled
Implementation Method 4
a second coaxial lighting unit configured to include a plurality of second lighting units, and the plurality of second lighting units configured to be individually controlled
Data Source
AI summary
The present disclosure relates to an internal inspection device for a prismatic can of a secondary battery capable of detecting defects inside the prismatic can of the secondary battery through reflected images obtained by adjusting the positions and angles of mirrors. The internal inspection device for a prismatic can of a secondary battery according to the present disclosure is capable of visual inspection of the interior without involving a posture change of the prismatic can, thereby improving the speed and accuracy of inspection.