Pouch Cup Molding with Pressing Parts for Greater Depth
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Solution Overview
Problem
Existing pouch molding apparatuses fail to adequately increase the depth and capacity of the cup part in pouch-type secondary batteries, limiting the moldability of the pouch film.
Innovation Solution
A pouch molding apparatus with a die and punch configuration that includes a pressing part to deform the pouch film, applying heat and pressing it into a die groove, enhancing the moldability by increasing the depth and capacity of the cup part.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a conventional pouch molding apparatus is used, then the molding process is simple, but the depth and capacity of the cup part are insufficient
Solution Approach 1:
The molding process is divided into multiple stages: a first molding process that forms an initial cup shape, and a second molding process that further deepens and expands the cup part. This segmentation allows the pouch to achieve greater depth and capacity while maintaining process control
Solution Approach 2:
The first molding process performs preliminary shaping of the cup part before the second molding process. By pre-forming the cup shape with adequate clearance, the subsequent deepening process can achieve greater final depth and capacity without excessive complexity
2Volume of moving object
If molding depth is increased to improve capacity, then the pouch cup part can accommodate more electrode assembly, but the moldability of the pouch film deteriorates
Solution Approach 1:
The first molding process creates preliminary clearance within the pouch film before the second molding process. This pre-created clearance allows the pouch film to be more easily deformed to greater depths in the subsequent process, improving moldability while achieving the desired final depth
Solution Approach 2:
The molding process uses dynamic control of the punching members, applying different forces and movements in sequential stages. The first punching member performs initial deformation, then the second punching member continues the deformation with adjusted parameters, making the overall deep molding process more manageable
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 improves the moldability of the pouch film by securing a larger clearance, resulting in increased depth and capacity of the pouch cup part, suitable for accommodating electrode assemblies.
Implementation Method 1
a heating part provided in each of the pressing parts to apply heat to the pouch film pressed by the pressing part
Data Source
AI summary
A pouch molding apparatus and method involves deforming a pouch so that a larger amount of clearance is secured to increase the capacity of the pouch, thereby improving the pouch molding process to increase the depth and capacity of a pouch cup part. The pouch molding apparatus includes a die and a punch. The die has a die groove recessed therein in a shape configured to mold a pouch. The punch is disposed above the die groove, wherein the punch includes a body part configured to be inserted into the die groove together with a pouch film disposed between the die and the punch, and pressing parts are provided on opposite sides of the body part to press the pouch film toward an inner surface of the die groove.