Pouch Battery Sealing Stopper for Consistent Seal Thickness
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Solution Overview
Problem
Existing pouch-shaped battery sealing technologies lack the ability to accurately adjust the distance between the holder and sealing block, leading to inconsistent sealing strength and high defect rates due to variations in pressure and material thickness during the sealing process.
Innovation Solution
A pouch-shaped battery sealing apparatus with a stopper unit that includes a stopper, support shaft, measurement portion, and height adjustment portion to precisely control the distance between the upper and lower sealing blocks, allowing for accurate sealing adjustments in micrometer units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a fixed spacing member is used to maintain distance between holder and sealing block, then thermal deformation is prevented, but sealing strength becomes inconsistent due to inability to adjust for different material thicknesses
Solution Approach 1:
The stopper is designed with adjustable height capability, allowing the distance between the holder and sealing block to be dynamically modified. The height adjustment portion enables the stopper height to be changed according to different laminate sheet thicknesses, transforming a static spacing system into a dynamic one that adapts to varying material dimensions, thereby maintaining both thermal deformation prevention and sealing strength consistency.
Solution Approach 2:
The invention changes the physical parameter of the stopper height to match different laminate sheet thicknesses. By adjusting the stopper height parameter, the system optimizes the sealing distance for each specific material thickness, ensuring consistent sealing strength while preventing thermal deformation across various material specifications.
2Strength
If pressing force is increased to improve sealing strength, then sealing quality improves, but thermal deformation occurs when pressing is excessively performed
Solution Approach 1:
The stopper acts as an intermediary element between the holder and sealing block, precisely controlling the distance between them. This intermediary component ensures that the pressing force is applied at the optimal distance, achieving sufficient sealing strength while preventing excessive pressing that would cause thermal deformation of the inner adhesive layer.
3Device complexity
If distance between holder and sealing block is not controlled, then device complexity is reduced, but sealing quality varies due to pressure variations
Solution Approach 1:
The stopper with height adjustment capability enables the sealing apparatus to self-adjust to different laminate sheet thicknesses. The operator simply sets the stopper height corresponding to the material thickness, and the system automatically maintains the correct sealing distance, achieving consistent sealing quality without requiring complex automated control systems.
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 apparatus enables consistent and precise sealing by accurately measuring and adjusting the distance between the sealing blocks, reducing defect rates and ensuring uniform sealing strength.
Implementation Method 1
a measurement portion (5350, 5450) configured to measure a movement change of the stopper (5310, 5410)
Implementation Method 2
The outer edge of the case 10 is hermetically sealed as the result of an inner adhesive layer of a laminate sheet being melted by heat
Implementation Method 3
pressed by a rectangular parallelepiped sealing tool that is long in a longitudinal direction
Data Source
Figure 1
Figure 2
Figure 3a~3b
AI summary
The present invention relates to a pouch-shaped battery sealing apparatus including a stopper capable of adjusting a thickness after sealing in a process of sealing the outer edge of a battery case made of a laminate sheet by applying heat and pressure thereto when a pouch-shaped battery is manufactured and a pouch-shaped battery sealing method using the same.