Pouch Battery Sealing Block Tilt Control for Uniform Edge Sealing
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Solution Overview
Problem
Existing pouch-shaped battery case sealing apparatuses are unable to uniformly seal the outer periphery of pouch-shaped secondary batteries within a short time, leading to inefficiencies and increased defect rates.
Innovation Solution
A pouch-shaped battery case sealing apparatus featuring an upper sealing block with a hip joint type coupling unit, allowing for tilting motion about the Z-axis and precession along the Z-axis, to adjust the pressure direction on the laminate sheet during the sealing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a fixed holder structure is used to press the laminate sheet, then the structure is simple, but the sealing uniformity is poor and defect rate increases
Solution Approach 1:
The holder structure is transformed from a fixed static structure to a dynamic adjustable structure. The holder can tilt in a first direction toward the sealing block and also tilt in a second direction perpendicular to the first direction, allowing real-time adjustment of pressing angles and forces to achieve uniform sealing across the laminate sheet surface.
Solution Approach 2:
The holder structure is divided into multiple independent tilting mechanisms that can operate in different directions (first direction and second direction). This segmentation allows each degree of freedom to be controlled independently, enabling precise adjustment of pressing forces at different locations to improve sealing uniformity.
2Productivity
If tilting is performed only in one direction to rapidly and uniformly press the laminate sheet, then the pressing speed is improved, but the sealing quality deteriorates and yield is lowered
Solution Approach 1:
The holder is equipped with dynamic tilting capabilities in two perpendicular directions, allowing it to rapidly adjust its orientation during the sealing process. This multi-directional dynamic adjustment enables both fast pressing speed and high sealing quality by optimizing the pressing angle in real-time.
Solution Approach 2:
The holder structure performs multiple functions: it can tilt in the first direction for rapid pressing, tilt in the second direction for uniformity adjustment, and maintain fixed positioning when needed. This multi-functionality allows the single holder to achieve both high speed and high quality sealing.
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 achieves uniform sealing of the pouch-shaped battery case, significantly improving sealing efficiency while reducing sealing time and defect rates.
Implementation Method 1
The outer periphery of the battery case 10 is sealed as the result of inner adhesive layers of laminate sheets being thermally melted and pressed by a rectangular parallelepiped sealing tool
Implementation Method 2
the upper sealing block and the fixing shaft are coupled to each other via a hip joint type coupling unit
Data Source
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AI summary
The present invention relates to a pouch-shaped battery case sealing apparatus capable of adjusting a direction in which an upper sealing block configured to press a laminate sheet applies pressure to the laminate sheet during a process of applying heat and pressure to an outer periphery of a battery case made of the laminate sheet to seal the outer periphery of the battery case when a pouch-shaped battery is manufactured and a pouch-shaped secondary battery sealing method using the same.