Secondary Battery Inspection via Variable X-Ray Radiation
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Solution Overview
Problem
Current secondary battery inspection methods are inefficient and unreliable, particularly when inspecting multiple batteries simultaneously, as they uniformly divide and photograph all angles, leading to reduced image resolution, prolonged inspection times, and incomplete detection of defective goods, which compromises market stability.
Innovation Solution
A secondary battery inspection apparatus that divides batteries into interest and non-interest areas, adjusting X-ray radiation angles and times based on these areas to ensure reliable and rapid inspection without compromising image quality, focusing on the interest areas for defective detection and quality inspection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple secondary batteries are inspected simultaneously, then inspection efficiency is improved, but image resolution deteriorates
Solution Approach 1:
The patent divides the secondary battery into multiple regions of interest (ROIs) based on defect detection priorities. Different X-ray radiation parameters (energy, time, angle) are applied to different ROIs, allowing simultaneous inspection of multiple batteries while maintaining sufficient resolution in critical areas through selective parameter optimization.
2Reliability
If all angles of secondary batteries are uniformly photographed, then complete inspection coverage is achieved, but inspection time increases
Solution Approach 1:
The patent implements non-uniform X-ray radiation strategies where different regions of the battery receive different radiation parameters. High-priority regions (such as electrode edges and interfaces) receive extended radiation time and multiple angles, while low-priority regions receive reduced radiation. This local differentiation maintains reliability for defect detection while significantly reducing overall inspection time.
Solution Approach 2:
The patent applies excessive radiation action selectively to critical regions rather than uniformly across the entire battery. By concentrating radiation resources on areas most susceptible to defects (electrode overlaps, interface regions), the system achieves reliable detection without the time penalty of exhaustive uniform inspection of all battery surfaces.
3Device complexity
If uniform X-ray radiation parameters are used for all battery regions, then inspection simplicity is maintained, but defect detection accuracy decreases
Solution Approach 1:
The patent dynamically adjusts X-ray radiation parameters (energy level, radiation time, incident angle) based on the specific region being inspected and the detected defect type. The system transitions from static uniform parameters to dynamic region-specific parameters, allowing optimization of detection sensitivity for different battery structures while managing complexity through automated control algorithms.
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 enables rapid inspection of multiple secondary batteries while ensuring the reliability and accuracy of defect detection, reducing inspection time and improving market stability by selectively focusing on critical areas with higher resolution and longer radiation times.
Implementation Method 1
an X-ray source configured to radiate an X-ray beam to the secondary battery set, and an X-ray detector configured to detect the X-ray beam generated from the X-ray source and passing through the secondary battery set
Data Source
AI summary
A secondary battery inspection apparatus includes a support unit configured to support a secondary battery set including at least one secondary battery, an X-ray source configured to radiate an X-ray beam to the secondary battery set, and an X-ray detector configured to detect the X-ray beam generated from the X-ray source and passing through the secondary battery set, wherein the secondary battery set is divided into an interest area and a non-interest area, the support unit rotates the secondary battery set in place, and at least one selected from a division angle between a plurality of X-ray radiation points and an X-ray radiation time is differentiated depending on whether the X-ray source photographs the interest area or whether the X-ray source photographs the non-interest area.