Pouch Cell Terrace Folding with Replaceable Roller Gap Blocks
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Solution Overview
Problem
The existing methods for adjusting the gap between folding rollers in pouch-type secondary battery folding processes rely on manual settings, leading to inaccuracies that depend on the worker's ability.
Innovation Solution
A secondary battery pouch cell terrace folding device that includes an upper roller and a lower roller, with a block mechanism to adjust the gap between the rollers, allowing for precise adjustments to match the thickness of the sealed battery pouch portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If manual adjustment of roller gap is performed by worker, then device complexity is reduced, but manufacturing precision deteriorates due to dependency on worker ability
Solution Approach 1:
The patent applies parameter changes by providing multiple stoppers with different heights (e.g., 1mm, 1.5mm, 2mm, 2.5mm, 3mm) to adjust the roller gap. Each stopper corresponds to a specific pouch thickness, allowing precise adjustment of the roller gap parameter to match different battery pouch specifications without complex mechanisms.
Solution Approach 2:
The adjustment mechanism is segmented into discrete stopper components that can be individually selected and replaced. Instead of a continuous adjustment mechanism, the system divides the adjustment range into discrete segments represented by different stopper heights, simplifying the overall device while maintaining precision.
2Ease of operation
If manual adjustment of roller gap is performed, then ease of operation is improved, but reliability deteriorates due to inaccurate gap adjustment
Solution Approach 1:
The system ensures reliability by providing pre-calibrated stoppers with specific height parameters that correspond to standard pouch thicknesses. This eliminates variability in gap adjustment and ensures consistent, reliable folding results across different operations.
Solution Approach 2:
The stopper acts as an intermediary element between the operator and the roller gap adjustment. By placing the stopper between the lower roller and the mounting plate, it mediates the gap distance, ensuring accurate and repeatable positioning without requiring operator skill or judgment.
3Manufacturing precision
If accurate roller gap adjustment is implemented, then manufacturing precision is improved, but device complexity increases due to adjustment mechanism
Solution Approach 1:
The patent achieves high manufacturing precision through a simple parameter change approach - replacing stoppers of different heights. The adjustment mechanism consists only of removable stoppers and mounting holes, avoiding complex mechanisms while maintaining accurate gap control for different pouch thicknesses.
Solution Approach 2:
The adjustment function is extracted into separate, removable stopper components that can be independently selected and replaced. This separates the adjustment capability from the main device structure, achieving precision without adding complexity to the core folding mechanism.
4Adaptability or versatility
If stopper replacement method is used, then adaptability is improved for different pouch thicknesses, but ease of operation deteriorates due to replacement process
Solution Approach 1:
The system provides excellent adaptability by offering multiple stoppers with different height parameters (1mm, 1.5mm, 2mm, 2.5mm, 3mm) to accommodate various pouch thicknesses. Each stopper is designed with a simple cylindrical shape that fits into corresponding mounting holes, making replacement straightforward despite the variety of options.
Solution Approach 2:
Instead of adjusting the stopper to fit the required gap, the system inverts the approach by providing pre-configured stoppers of different heights and selecting the appropriate one for each pouch thickness. This reversal simplifies the operation - the operator only needs to select and install the correct stopper rather than performing complex adjustments.
Data Source
AI summary
Provided is a mold-type secondary battery pouch cell terrace folding device for folding an edge of a secondary battery pouch cell, which allows adjustments of a roller gap and a press unit gap by replacing a stopper, the device adjusting the gap by including: an upper mount including an upper roller disposed on the upper mount in a length direction; a lower mount including a lower roller disposed on the lower mount in the length direction; a support vertical to an upper surface of the lower mount and passing through the upper and lower mounts to move the upper mount vertically; and a block disposed between the upper mount and the lower mount to adjust a gap between the upper roller and the lower roller.