Both-Side Electrode Defect Labels for Flexible Sensor Recognition
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Solution Overview
Problem
Existing labels for identifying defective portions of secondary battery electrodes can only be recognized by sensors from one side, limiting their usability as production processes vary, and do not easily allow identification of adhesive layer positions, leading to potential secondary defects.
Innovation Solution
A both side-recognizable label with a silicone resin layer, an acrylic removable adhesive, and a transparent synthetic resin base film with color layers that can be identified by sensors from any position, including adhesive layer marking portions to ensure accurate and uniform attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a label is designed with color layers only on one side for sensor recognition, then the manufacturing process is simplified, but the label cannot be recognized by sensors when attached at different positions
Solution Approach 1:
The label is divided into multiple functional layers: a base film with first and second color layers on opposite sides, and a separate adhesive layer. This segmentation allows each layer to serve its specific function while maintaining overall label effectiveness from both sides.
Solution Approach 2:
Different regions of the label have different properties: the first color layer is on one side of the base film for sensor detection, while the second color layer is on the opposite side. The adhesive layer is positioned between these color layers and the electrode, creating localized functional zones that enable bidirectional recognition.
2Reliability
If adhesive is applied extensively to ensure label attachment, then the label attaches securely, but adhesive may leak and cause secondary defects on the electrode surface
Solution Approach 1:
The adhesive layer is applied in a controlled partial area between the first and second color layers, rather than covering the entire label surface. This partial application ensures sufficient attachment reliability while preventing excessive adhesive from leaking onto the electrode surface and causing secondary defects.
3Ease of manufacture
If the label uses a simple single-layer structure, then the manufacturing process is easier, but the adhesive layer position cannot be easily identified
Solution Approach 1:
The label incorporates color layers (first color layer on one side, second color layer on the other side) that provide visual indicators of the adhesive layer position. These color changes enable precise identification of where the adhesive is located without complicating the manufacturing process.
Data Source
AI summary
A both side-recognizable label for identifying a defective portion of an electrode for a secondary battery and a manufacturing method therefor are provided. More particularly, to a both side-recognizable label for identifying a defective portion of an electrode for a secondary battery, which allows both the front and back sides of the label for identifying the defective portion of the electrode for the secondary battery to be recognized by a sensor so that the defective portion of the electrode for the secondary battery may be easily identified even when the sensor is installed at a different place in each manufacturing line.