Battery Cell X-Ray Inspection Flow for Alignment and Impurity Checks
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Solution Overview
Problem
Existing inspection methods for lithium batteries face challenges in accurately inspecting electrode plate alignment and impurities due to high requirements for positioning and posture, leading to low inspection efficiency and high misjudgment rates, which compromises battery quality and safety.
Innovation Solution
An inspection device comprising a first conveying mechanism, radiographic imaging inspection mechanism, stacking mechanism, second conveying mechanism, and tomographic imaging inspection mechanism, which sequentially inspects individual cells and groups of cells using X-ray scanning, allowing for improved alignment and impurity detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If individual battery cells are inspected one by one using DR inspection device, then inspection coverage includes impurities, but inspection efficiency is low and misjudgment rate is high due to high requirements for position, posture and corner deformation
Solution Approach 1:
The inspection process is segmented into two distinct stages: individual cell inspection using radiographic imaging for impurity detection, and grouped cell inspection using tomographic imaging for alignment verification. This segmentation allows each inspection type to be optimized independently, resolving the contradiction between thorough inspection and efficiency.
Solution Approach 2:
Multiple battery cells are merged into a group for tomographic imaging inspection. By inspecting groups of cells simultaneously rather than individually, the system maintains high inspection accuracy for alignment while significantly improving overall inspection efficiency and reducing misjudgment rates.
2Adaptability or versatility
If high requirements are imposed on position, posture and corner deformation of battery cells, then impurity inspection is impossible, but this leads to low inspection effect and high misjudgment rate
Solution Approach 1:
The inspection system dynamically adapts its requirements based on the inspection mode. For individual cell impurity inspection, flexible positioning is allowed. For grouped cell alignment inspection, precise positioning is enforced. This dynamic adjustment of requirements expands inspection capability while maintaining reliability through appropriate constraint application.
Solution Approach 2:
The inspection parameters are changed between the two inspection modes: radiographic imaging uses parameters suitable for detecting impurities with relaxed positional constraints, while tomographic imaging uses parameters optimized for alignment detection with stricter positional constraints. This parameter switching enables versatile inspection without compromising reliability.
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 accuracy and efficiency, ensuring higher safety and quality of battery cells by simultaneously inspecting multiple cells for defects and impurities, reducing misjudgment rates.
Implementation Method 1
radiographic imaging inspection mechanism configured to inspect the battery cell
Implementation Method 2
tomographic imaging inspection mechanism configured to inspect the battery cell group
Implementation Method 3
tomographic imaging inspection mechanism
Data Source
AI summary
An inspection device and an inspection system are provided. The inspection device includes a first conveying mechanism (10), a radiographic imaging inspection mechanism (20), a stacking mechanism (30), a second conveying mechanism (40) and a tomographic imaging inspection mechanism (50). The first conveying mechanism (10) is used to convey a battery cell. The radiographic imaging inspection mechanism (20) is used to inspects the battery cell. The stacking mechanism (30) is used to stack battery cells into a battery cell group. The second conveying mechanism (40) is used to convey the battery cell group. The tomographic inspection mechanism (50) is used to inspect the battery cell group.