Electrode Assembly Press Molding for Stable Round Portion Forming
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Solution Overview
Problem
Existing press molding technologies face challenges in stabilizing the manufacturing process of the round portion in the uncoated region of a jelly roll-type electrode assembly, leading to inconsistent quality.
Innovation Solution
A press mold apparatus with a base mold and movable mold, equipped with first and second pressing blocks and tape members made of Teflon™, is used to press the round portion of the electrode assembly, ensuring stable molding by pressing opposing surfaces during the manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional press molding technology is used, then the manufacturing process is simple, but the quality of the round portion in the uncoated region is inconsistent
Solution Approach 1:
The press mold apparatus applies different pressing forces to different regions of the electrode assembly. Specifically, the round portion pressing members (first and second pressing members) are positioned to apply concentrated pressing force only to the round portion in the uncoated region, while the flat portion pressing members apply force to the flat portion. This localized quality approach ensures consistent molding of the round portion without unnecessarily complicating the entire press mold structure.
Solution Approach 2:
The pressing surface of the press mold is divided into multiple independent pressing regions: a flat portion pressing region with flat portion pressing members and a round portion pressing region with round portion pressing members (first and second pressing members). Each pressing member can be independently adjusted and controlled, allowing separate optimization of pressing parameters for different regions, thereby improving the quality consistency of the round portion without requiring complete redesign of the entire press mold system.
2Manufacturing precision
If uniform pressing force is applied across the entire electrode assembly, then the device structure is simple, but the round portion in the uncoated region cannot be properly molded
Solution Approach 1:
The press mold apparatus implements non-uniform pressing force distribution by equipping the round portion region with dedicated pressing members (first and second pressing members) that can be independently adjusted. These members apply concentrated pressing force specifically to the round portion in the uncoated region, ensuring proper molding of this critical area. The pressing force is localized rather than uniformly distributed, which resolves the molding quality issue without requiring complex overall force distribution systems.
Solution Approach 2:
The pressing members (first pressing member, second pressing member, third pressing member, and fourth pressing member) are designed with adjustable positions and forces. The first and second pressing members can be independently adjusted to apply appropriate pressing force to the round portion, while the third and fourth pressing members handle the flat portion. This dynamic adjustability allows optimization of pressing parameters for different regions, improving round portion molding quality without requiring a completely complex force distribution mechanism.
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 manufacturing quality of the electrode assembly by effectively pressing the round portion in the uncoated region, enhancing the overall production consistency.
Implementation Method 1
a first tape member attached to a protruded surface of the first pressing block... a second tape member that is attached to a protruded surface of the second pressing block
Implementation Method 2
The first tape member may be a heat resistant Teflon (Teflon™) material that is attached to the first round surface and presses the round portion formed on the first surface of the electrode assembly
Data Source
AI summary
A press molding apparatus for manufacturing an electrode assembly is disclosed. A press mold apparatus for manufacturing an electrode assembly may be an apparatus for molding an electrode assembly in which a round portion is formed in an uncoated region of the electrode assembly, and may include: a base mold including a seating surface on which the electrode assembly is seated and a first pressing portion pressing a first surface of the round portion of the electrode assembly; a movable mold installed to be able to be lifted up and down above the base mold and including a pressing surface that presses the electrode assembly and includes a second pressing portion pressing a second surface opposing the first surface of the round portion; and a driver driving the movable mold.