Battery X-Ray Inspection for Internal Defect Imaging
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Solution Overview
Problem
Existing battery detection methods are inefficient and unreliable in identifying internal defects, posing risks of defective products entering the market.
Innovation Solution
A battery detection device utilizing an X-ray source and a flat panel detector to image internal defects by exploiting different material absorption rates of X-rays, with specific parameters for focal spot size, power, voltage, current, and pixel size to enhance detection accuracy and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual observation method is used to detect internal defects, then the device complexity is low, but the detection reliability and efficiency are poor
Solution Approach 1:
The patent replaces the manual mechanical observation system with an automated X-ray imaging system. The X-ray source emits radiation that penetrates the battery, and the flat panel detector captures the transmitted radiation to form images of internal defects, eliminating the need for manual inspection and significantly improving detection reliability.
Solution Approach 2:
The patent introduces X-ray radiation as an intermediary to detect internal defects. The X-ray source generates radiation that passes through the battery, and the flat panel detector receives the transmitted radiation, creating an intermediate imaging process that reveals internal structures and defects invisible to manual observation.
2Measurement precision
If X-ray source with small focal spot size is used, then the measurement precision is improved, but the power consumption increases and service life decreases
Solution Approach 1:
The patent optimizes the focal spot size parameter to a specific range (30-80 μm) that balances image resolution requirements with X-ray source durability. This parameter optimization ensures sufficient precision for detecting battery defects while preventing excessive heat concentration that would reduce service life.
Solution Approach 2:
The patent applies local quality by creating different focal spot size requirements for different detection needs. The focal spot size is specifically controlled within 30-80 μm to provide adequate resolution for battery defect detection without the extreme precision requirements that would necessitate even smaller focal spots and reduce service life.
3Productivity
If higher power X-ray source is used, then the detection efficiency is improved, but the service life of X-ray source decreases
Solution Approach 1:
The patent optimizes the power parameter of the X-ray source to a moderate range (65-75 W) that provides sufficient detection efficiency for battery inspection while preventing excessive heat generation and energy consumption that would reduce service life. This balanced power level maintains productivity without compromising durability.
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
Improves the efficiency and accuracy of battery defect detection, preventing the release of risky products by clearly identifying internal defects through optimized X-ray and detector configurations.
Implementation Method 1
Because different materials have different absorption rates for the X-rays, various defects of the battery to be detected will appear in the detection image
Data Source
AI summary
The present application provides a battery inspection device, and belongs to the technical field of batteries. The battery inspection device comprises a bearing assembly, an X-ray source, and a flat panel detector, the bearing assembly is used for bearing a battery under test; the X-ray source is used for irradiating X-rays to the battery under test on the bearing assembly; and the flat panel detector and the X-ray source are each located on one side of the bearing assembly, and the flat panel detector is used for receiving rays that are emitted by the X-ray source and penetrate through the battery under test.