Adjusting Roller Layout for Uniform Electrode Fabric Tension

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Solution Overview

Problem

Conventional electrode manufacturing processes face issues with tension imbalances between coated and uncoated portions of electrode fabrics during rolling and transportation, leading to electrode swells, wrinkles, and potential breakages.

Innovation Solution

An electrode fabric transfer device with an adjusting roller system that allows for position movement between running rollers, supported by a control lever and seating frame, to maintain uniform tension by adjusting the contact area based on tensile force, preventing swells and breakages.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the electrode fabric is transported using conventional running rollers, then the transportation process is simple, but tension imbalances occur between coated and uncoated portions causing electrode swells and wrinkles

Engineering Contradiction:
Improveprevention of electrode swells and wrinklesVSAvoidstructure of transfer device
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies the dynamics principle by making the adjusting roller's position movable rather than fixed. The second end of the rotation shaft can move in the vertical direction, allowing the roller to dynamically adjust its position based on tension variations in the electrode fabric during transportation, thereby preventing swells and wrinkles while maintaining a relatively simple overall device structure

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent applies the local quality principle by providing different functional characteristics to different parts of the transfer device. The adjusting roller has a specific structure with a rotation shaft where only the second end is movable while the first end remains fixed, creating localized adaptability at the adjustment point without complicating the entire device structure

Inventive Principle:
Principle #3Local quality

2Manufacturing precision

If the position of the adjusting roller is fixed, then the device structure is simple, but the contact area with electrode fabric cannot be adjusted to maintain uniform tension

Engineering Contradiction:
Improveuniformity of tensionVSAvoidadjusting mechanism
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent implements dynamics by enabling the second end of the rotation shaft to move vertically, which dynamically adjusts the contact area between the adjusting roller and the electrode fabric. This movement allows the system to adapt to tension variations and maintain uniform tension across the fabric during transportation

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent applies parameter changes by modifying the position parameter of the adjusting roller (vertical position of the second end of the rotation shaft). This parameter change directly controls the contact area between the roller and electrode fabric, enabling adjustment of tension distribution to achieve uniformity

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS20250002285A1Electrode Fabric Transfer Device, and Electrode Notching Device Comprising the Same
Publication Date: 2025.01.02 LG ENERGY SOLUTION LTD
  • US20250002285A1 patent drawing
  • US20250002285A1 patent drawing
  • US20250002285A1 patent drawing

AI summary

An electrode fabric transfer device comprises a plurality of running rollers and an adjusting roller. The plurality of running rollers transfer an electrode fabric along a transfer path, and the adjusting roller includes a rotation shaft having a first end with a position fixed and a second end positioned in a direction opposite to the first end and capable of position movement. The adjusting roller is disposed between two adjacent running rollers. An electrode notching device comprising the same is also provided.