Battery X-Ray Imaging for Electrode Alignment Defect Detection
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Solution Overview
Problem
There is a need for a technology that can quickly and accurately detect defects in electrode alignment within batteries, as misalignment can lead to short circuits, battery failure, damage, or ignition.
Innovation Solution
An X-ray inspection device and method that irradiates X-rays onto a battery, detects the transmitted X-rays to acquire gray values, processes these values to generate an X-ray image, and determines if the battery is defective based on the distance between the edges of the anode and cathode areas in the image.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If X-ray inspection is performed to detect electrode alignment defects, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent replaces complex mechanical inspection systems with X-ray imaging technology. The X-ray inspection device captures images of electrode alignment through the battery structure, enabling non-contact, high-precision measurement of electrode positions and alignment defects without mechanical intervention.
Solution Approach 2:
The patent creates a visual copy (X-ray image) of the internal battery structure to analyze electrode alignment. By capturing and processing X-ray images, the system generates a digital representation of the electrode positions, allowing precise measurement and defect detection without physically accessing or disturbing the electrodes.
2Productivity
If rapid defect detection is implemented to improve productivity, then production speed increases, but measurement precision may deteriorate
Solution Approach 1:
The patent performs preliminary image capture and processing during the manufacturing process. By capturing X-ray images at the inspection stage and immediately processing them to detect alignment defects, the system enables rapid quality assessment without requiring additional time-consuming measurement steps later in production.
Solution Approach 2:
The replacement of manual or mechanical measurement methods with automated X-ray imaging and image processing enables simultaneous high-speed inspection and precise measurement. The automated system可以快速 capture images and process them to detect even minor alignment defects, maintaining both speed and accuracy.
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 rapid and precise detection of defects in electrode alignment without damaging the battery, thereby ensuring battery stability and durability.
Implementation Method 1
an X-ray output portion irradiating X-rays to a battery including a cathode, a separator, and an anode in a stacking direction of the cathode and the anode
Implementation Method 2
an X-ray detection portion acquiring a plurality of gray values based the X-rays that have transmitted through the battery
Data Source
AI summary
An X-ray inspection device according to one embodiment of the present disclosure includes: an X-ray output portion irradiating X-rays to a battery including a cathode, a separator, and an anode in a stacking direction of the cathode and the anode; an X-ray detection portion acquiring a plurality of gray values based the X-rays that have transmitted through the battery; a signal processing portion acquiring an X-ray image including the plurality of gray values; and an inspection portion determining whether the battery is defective based on a distance between a first edge of an anode area including gray values representing the anode layer and a second edge of a cathode area including gray values representing the cathode layer in the X-ray image.