Electrode Rolling Ring Assembly for Wrinkle-Free Uncoated Edges
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Solution Overview
Problem
Existing manufacturing processes for secondary battery electrodes often result in defects such as folding or wrinkles on the non-coated parts of the electrode substrate, which affect the quality and efficiency of the manufacturing process.
Innovation Solution
A manufacturing apparatus for secondary battery electrodes that includes a pressing unit with a ring assembly detachably coupled to a roll member, which presses the non-coated parts of the current collector to prevent defects during the rolling process, utilizing a ring assembly with elastic members to maintain tension and prevent folding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the electrode active material is coated onto the current collector, then the electrode quality is improved, but folding or wrinkles may occur on the non-coated parts
Solution Approach 1:
The pressing unit applies pressing force to the non-coated parts of the current collector before the rolling process occurs, preventing the harmful effect of folding or wrinkles from occurring in the first place. This preliminary counter-action eliminates the problem rather than correcting it afterward.
Solution Approach 2:
The pressing unit prepares the non-coated parts of the current collector by applying pressing force in advance before the rolling process. This preliminary action ensures that the non-coated parts are properly positioned and tensioned, preventing defects during subsequent processing.
2Manufacturing precision
If a pressing unit is added to prevent defects on non-coated parts, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The pressing unit is integrated with the existing rolling unit structure, combining the pressing function with the rolling mechanism. This merging approach allows defect prevention to be achieved without adding a completely separate, complex system to the apparatus.
Solution Approach 2:
The pressing unit is designed to work in conjunction with the rolling unit, serving multiple functions within the electrode manufacturing process. The same structural elements are utilized for both pressing and rolling operations, reducing overall device complexity while maintaining precision.
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 effectively prevents defects on the non-coated parts of the electrode substrate, enhancing the manufacturing efficiency and producing high-quality electrodes by maintaining tension and preventing wrinkles.
Implementation Method 1
a ring assembly that is detachably coupled to the roll member and comes into contact with the non-coated part to press the non-coated part
Data Source
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AI summary
A manufacturing apparatus of an electrode for a secondary battery according to one embodiment of the present disclosure includes a transfer unit that transfers a current collector from an unwinder; a coating unit that applies an electrode active material to at least one surface of the current collector; a rolling unit that is arranged on the transfer unit and rolls the electrode active material layer composed of the electrode active material; and a pressing unit that is arranged adjacently to the rolling unit and presses the non-coated part of the current collector to which the electrode active material is not applied. The pressing unit includes a roll member, and a ring assembly that is detachably coupled to the roll member and comes into contact with the non-coated part to press the non-coated part.