Rotating Battery Cell Inspection Stage for X-Ray Total Inspection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current battery inspection technologies are inefficient for total inspection of battery cells due to limitations in capturing three-dimensional images, leading to slow processing speeds and inability to inspect multiple cells simultaneously, which poses a risk in the production line where defects like bent corners or short-circuited electrodes can cause malfunctions or explosions.
Innovation Solution
An automated battery cell inspection apparatus that includes a rotatable main stage with sub-stages for loading, inspecting, and unloading test objects, utilizing radiography to capture images of stacked battery cells, reconstructing three-dimensional images from two-dimensional ones, and incorporating a test object inspection unit with an X-ray generating unit and imaging detector for precise inspection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual X-ray inspection is used to detect battery defects, then inspection accuracy is improved, but productivity deteriorates due to sampling inspection only
Solution Approach 1:
The inspection system is segmented into multiple independent inspection units arranged in parallel. Each unit can independently inspect battery cells, allowing simultaneous inspection of multiple cells. This segmentation enables the system to maintain high inspection accuracy while dramatically increasing productivity by inspecting multiple cells at the same time rather than one by one
Solution Approach 2:
The inspection apparatus is designed with universal functionality to handle multiple battery cell inspections simultaneously through parallel inspection units. The system maintains the same high inspection accuracy as manual inspection while achieving automated total inspection of all battery cells produced, eliminating the productivity limitation of sampling inspection
2Measurement precision
If three-dimensional images are reconstructed from two-dimensional images for precise inspection, then measurement precision is improved, but processing speed deteriorates
Solution Approach 1:
Multiple two-dimensional images are captured simultaneously from different angles using parallel inspection units before reconstruction is needed. This preliminary capture of multiple views in parallel reduces the processing time for three-dimensional reconstruction, maintaining high inspection precision while improving processing speed compared to sequential image capture
3Reliability
If total inspection of all battery cells is performed, then reliability is improved, but device complexity increases compared to sampling inspection
Solution Approach 1:
The system segments the total inspection task into multiple parallel inspection units, each handling a portion of the battery cells. This segmentation allows the system to achieve reliable total inspection of all cells while managing device complexity through modular architecture, where each unit is relatively simple but their parallel combination achieves the comprehensive inspection goal
Solution Approach 2:
Multiple inspection units are essentially copies of a basic inspection module, arranged in parallel. This copying approach enables total inspection of all battery cells for improved reliability while keeping individual module complexity low, as each unit is a standardized replica rather than a complex unique system
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
Enables high-speed total inspection of battery cells by reconstructing three-dimensional images from multiple two-dimensional images, allowing for simultaneous inspection of multiple cells during the production process, thereby improving productivity and ensuring consistent quality without bottlenecks in the production line.
Implementation Method 1
utilizing radiography to capture images of stacked battery cells
Implementation Method 2
test object inspection unit with an X-ray generating unit and imaging detector for precise inspection
Data Source
AI summary
The present invention relates to an apparatus and a method for inspecting battery cells for automation of total inspection. To this end, the present invention is configured such that test objects are sequentially stacked on a test object casing provided on an upper portion of a mounting stage of a main stage, images of the test objects are obtained by radiography after the test object casing is moved to a test object inspection unit, and the test objects stacked on the test object casing are unloaded to the outside after the images are obtained. Accordingly, the present invention enables total inspection to be performed on battery cells, which are the test objects, in order to quickly divide good and defective products, and solves a delay of a flow rate caused by X-ray inspection of the test object inspection unit in order to improve productivity and efficiency.