Electrode Defect Marking Tag With Color-Contrast Sensor Feeding

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Solution Overview

Problem

Existing identification labels for defective portions of secondary battery electrodes are complex, costly, and cause recognition errors in automated feeding processes due to color mismatches and adhesive issues, leading to inefficient tag feeding and increased manufacturing costs.

Innovation Solution

A tag for marking defective portions of secondary battery electrodes, comprising a release paper with a colored layer, a transparent adhesive layer, a PET film layer, and a silicone resin layer, integrated with a contrasting colored tag film, along with adhesive guidelines and exhaust lines, to ensure clear identification by light sensors and ease of use.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a conventional label with adhesive layer is used for marking defective portions, then the label can be attached to the electrode, but the label becomes thick and complex in manufacturing process

Engineering Contradiction:

Improvemanufacturing process simplicityVSAvoidlabel structure complexity

Core Design Contradiction:

Ease of manufactureVSDevice complexity

Solution Approach 1:

The patent extracts the adhesive layer from the label structure, using a separate adhesive tape instead of integrating it into the label. This separation simplifies the label manufacturing process while maintaining the adhesive function, directly resolving the contradiction between ease of manufacture and device complexity.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The labeling system is segmented into distinct components: the label itself (without adhesive) and a separate adhesive tape. This segmentation allows each component to be manufactured independently with simpler processes, reducing overall structural complexity while maintaining functionality.

Inventive Principle:

Principle #1Segmentation

2Measurement precision

If the release paper has the same color as the tag film (both white), then the materials are easy to manufacture, but the light sensor cannot identify the tag film from the release paper

Engineering Contradiction:

Improvelight sensor identification accuracyVSAvoidmaterial manufacturing ease

Core Design Contradiction:

Measurement precisionVSEase of manufacture

Solution Approach 1:

The patent changes the color of the release paper from white to blue, creating a color contrast with the white tag film. This color differentiation enables the light sensor to accurately identify the tag film position during automated feeding, resolving the contradiction between measurement precision and manufacturing ease.

Inventive Principle:

Principle #32Color changes

Solution Approach 2:

The release paper is given a specific local quality (blue color) in the area where tag identification is needed, while maintaining simplicity in other aspects. This localized color change enables sensor identification without complicating the overall manufacturing process.

Inventive Principle:

Principle #3Local quality

3Reliability

If adhesive is applied generously to ensure tag attachment, then the tag adheres well to the electrode, but adhesive may leak and cause secondary defects on the electrode surface

Engineering Contradiction:

Improvetag attachment reliabilityVSAvoidadhesive leakage causing defects

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent introduces an intermediary component (adhesive tape with controlled adhesive layer) that mediates between the tag and electrode. This intermediary ensures reliable attachment while controlling adhesive quantity to prevent leakage, resolving the contradiction between attachment reliability and harmful effects.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The adhesive layer thickness and application area are precisely controlled through parameter optimization. By changing these parameters, the system achieves reliable tag attachment while preventing adhesive leakage that could cause secondary defects on the electrode surface.

Inventive Principle:

Principle #35Parameter changes

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 tag enables accurate, automated feeding and reduced manufacturing costs while maintaining ease of use and clear identification, preventing recognition errors and ensuring smooth operation in automated processes.

Implementation Method 1

a release paper coated with a color contrasted with the color of a tag film is laminated onto top of the tag film to allow the release paper and the tag film to be identified without errors by a light sensor installed on the automatic tag feeder

Methodology Applied

Scientific EffectColor contrast detection: Photoelectric Effect

Data Source

PatentUS12548476B2Tag for marking defective part of electrode for secondary battery and manufacturing method thereof

Publication Date: 2026.02.10 CHO EUN MI

AI summary

A tag for marking a defective portion of an electrode for a secondary battery and a manufacturing method thereof are provided. More specifically, the tag for marking a defective portion of an electrode is simply attached to a place recognized as having a defect in an electrode for a secondary battery produced by an automation process. So, the tag for marking a defective portion of an electrode for a secondary battery is formed as release paper applied with color contrasted with the color of the tag for marking is laminated so that a light sensor installed in an automatic tag feeder identifies the release paper and the tag for marking without an error to automatically supply the tag for marking when supplying the tag for marking a defective portion of an electrode by the automatic tag feeder.