Battery XRD Stage with Linear Positioning for Pouch Cell Stability
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Solution Overview
Problem
Existing XRD measurement techniques face challenges in accurately measuring different parts of a battery without significant changes in the measurement situation, particularly for batteries with flexible shapes like pouch-type batteries, leading to measurement errors and reduced reproducibility.
Innovation Solution
A stage apparatus comprising a placement plate, a driving unit, a guide unit, and a fixation unit that stabilizes the battery on a sample stage, allowing precise linear movement and fixation, ensuring the battery's shape remains unchanged during measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a battery with flexible external shape (e.g., pouch-type) is measured using existing XRD measurement techniques, then the measurement can be performed, but measurement errors occur and reproducibility is reduced due to shape changes during measurement
Solution Approach 1:
A placement plate is introduced as an intermediary component between the battery and the measurement system. The placement plate has a battery receiving portion that physically constrains the battery, preventing shape changes during measurement. This mediator transfers the measurement function while maintaining battery shape stability.
Solution Approach 2:
The invention changes the physical state of the battery from flexible to constrained by introducing the placement plate. The battery receiving portion with pressing portions applies mechanical constraint, transforming the battery's shape parameter from variable to fixed during the measurement process.
2Adaptability or versatility
If the battery position needs to be changed to measure different parts of the battery, then comprehensive measurement can be achieved, but alignment work becomes necessary which reduces productivity
Solution Approach 1:
The placement plate is designed to be movable along the sample stage, enabling dynamic repositioning to measure different parts of the battery. The pressing portions can be adjusted to maintain contact with the battery during movement, eliminating the need for realignment while achieving comprehensive measurement coverage.
3Measurement precision
If additional alignment work is performed to measure different parts of the battery, then measurement accuracy can be maintained, but measurement time increases
Solution Approach 1:
The placement plate is pre-configured with pressing portions that maintain constant contact with the battery before and during movement. This preliminary setup ensures that when the placement plate is moved to different positions, the battery remains properly aligned without requiring additional alignment work, thus maintaining accuracy while reducing time.
Data Source
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AI summary
The present invention relates to a battery-fixing stage device used for XRD measurement and, specifically, the objective of the present invention is to provide a stage device for XRD measurement of a battery, the device being for the measurement of a battery by part without a large change in measurement conditions. The stage device for XRD measurement of a battery of the present invention, can comprise: an object-mounting plate on which the battery is fixed and at which x rays are emitted; a driving unit for providing linear driving force to the object-mounting plate so that the object-mounting plate moves in a first direction that is parallel to the surface of the object-mounting plate; a guide unit for guiding the movement of the object-mounting plate; and a fixing unit for fixing the driving unit and the guide unit to the correct position.