Electrode Stack Inspection for Precise Layer Alignment
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Solution Overview
Problem
Existing manufacturing processes for modules or module precursors, such as fuel or battery cells, suffer from high short-circuit risks due to imprecise layer positioning, leading to a significant proportion of unusable products.
Innovation Solution
An inspection process and apparatus that includes cameras and lighting devices to accurately determine the position and orientation of anode/cathode layers before and during stacking, using correction values to align the layers with high precision, reducing the risk of short circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional manufacturing processes are used for modules or module precursors, then production can proceed at standard speed, but the positioning precision of layers is insufficient leading to high short-circuit risks and significant proportion of unusable products
Solution Approach 1:
The patent applies preliminary action by performing inspection and measurement of layer positioning before the stacking operation. The system captures images of the layer stack at multiple positions (before stacking, during stacking, and after stacking) to detect positioning deviations in advance, allowing corrective measures to be taken before defects lead to short circuits or unusable products.
Solution Approach 2:
The patent implements feedback by using inspection devices to continuously monitor the position and orientation of layers during the stacking process. The system compares actual positioning with target positioning, detects deviations, and provides feedback to control the stacking device to correct positioning errors in real-time, thereby reducing short-circuit risks.
2Measurement precision
If multiple inspection points are implemented during stacking, then positioning accuracy is improved, but the complexity of the inspection device increases
Solution Approach 1:
The patent applies universality by designing a multi-functional inspection device that performs multiple functions: capturing images at different positions (before, during, and after stacking), detecting both position and orientation deviations, and providing feedback for correction. This single integrated device replaces what would otherwise require multiple separate inspection systems, reducing overall device complexity while maintaining high measurement precision through multiple inspection points.
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
The process achieves precise layer positioning with an accuracy of ±0.1 mm, significantly reducing the risk of short circuits and improving the efficiency and quality of fuel or battery cells.
Implementation Method 1
a camera, which serves to detect the position and/or orientation of the anode/cathode layer
Data Source
Figure 1
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Figure 2
AI summary
The invention relates to an inspection process in the production of modules or precursors of modules, having the steps of: providing an individualized anode/cathode layer; transporting the anode/cathode layer to a stacking location by means of a stacking device; stacking the transported anode/cathode layer at the stacking location; detecting an electrode stack grown about the stacked anode/cathode layer at the stacking location in at least one lateral view and/or a high edge of the electrode stack at the stacking location; and checking the alignment and/or position of the stacked anode/cathode layer or each stacked anode/cathode layer relative to the rest of the electrode stack grown at the stacking location.