Electrode Residue Discharge Roller for Slitting Lane Alignment

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Solution Overview

Problem

Conventional electrode cutting processes suffer from interference between edge lanes and slitting lanes, leading to disconnection of cutting residues and damage to the cut surface of electrodes due to inadequate meandering adjustment.

Innovation Solution

A discharge device and electrode slitting system featuring a meandering adjustment roller with comb patterns on its surface, which adjusts the position of cutting residues in one or the other direction to prevent interference and maintain tension, combined with a suction unit for discharge.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If meandering adjustment or tension adjustment is not performed during the discharge process of edge lanes, then the discharge device complexity is reduced, but interference occurs between edge lanes and slitting lanes causing disconnection of cutting residues

Engineering Contradiction:
Improvedischarge device complexityVSAvoidcutting residue connection reliability
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

A meandering adjustment roller is introduced as an intermediary device between the edge lanes and the discharge part. This roller actively adjusts the meandering of cutting residues during discharge, preventing interference with slitting lanes while maintaining simple overall device structure. The roller serves as a mediator that resolves the contradiction by providing targeted adjustment only where needed.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Object-affected harmful factors

If the separated distance between edge lane and slitting lane is increased, then interference between lanes is reduced, but the cut surface of slitting lane becomes damaged due to excessive separation

Engineering Contradiction:
Improveinterference between lanesVSAvoidcut surface quality
Core Design Contradiction:
Object-affected harmful factorsVSManufacturing precision

Solution Approach 1:

The meandering adjustment roller provides dynamic adjustment of the cutting residue position during the discharge process. Instead of maintaining a fixed separation distance, the system dynamically adapts the position of edge lanes to prevent both interference and excessive separation, thereby protecting cut surface quality while reducing lane interference.

Inventive Principle:
Principle #15Dynamics

3Reliability

If meandering adjustment is performed during the discharge process, then disconnection of cutting residues is prevented, but the device complexity and adjustment requirements increase

Engineering Contradiction:
Improvecutting residue connection reliabilityVSAvoiddischarge device complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The meandering adjustment roller serves as a dedicated intermediary component that handles the meandering adjustment function. By isolating this adjustment function to a specific roller, the overall device complexity is minimized while still achieving reliable prevention of cutting residue disconnection.

Inventive Principle:
Principle #24Intermediary (Mediator)

4Manufacturing precision

If meandering adjustment is performed during the discharge process, then damage to the cut surface of electrodes is minimized, but the device complexity increases

Engineering Contradiction:
Improvecut surface qualityVSAvoiddischarge device complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The meandering adjustment roller acts as a specialized intermediary device that protects cut surface quality by preventing excessive separation between lanes. This targeted approach maintains high manufacturing precision while adding minimal complexity to the discharge system.

Inventive Principle:
Principle #24Intermediary (Mediator)

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

Prevents disconnection and excessive separation between cutting residues and electrodes, minimizing damage to the cut surface and enhancing electrode quality.

Implementation Method 1

a suction unit arranged so that the cutting residue is sucked and discharged to the outside

Methodology Applied
Scientific EffectSuction: Suction

Data Source

PatentEP4684932A1Discharge device, electrode slitting system, and electrode manufacturing method using same
Publication Date: 2026.01.28 LG ENERGY SOLUTION LTD
  • EP4684932A1 patent drawingFigure 1~3
  • EP4684932A1 patent drawingFigure 4~6
  • EP4684932A1 patent drawingFigure 7

AI summary

The present invention is a discharge device arranged so that to form a plurality of electrodes, an electrode sheet is cut in a width direction, and then the remaining cutting residue excluding the plurality of electrodes is discharged to the outside, which comprises: a discharge part arranged to discharge the cutting residue to the outside; a discharge guide roller arranged to transfer the cutting residue to the discharge part; and a meandering adjustment roller provided during a process of transferring the cutting residue to the discharge part, and having a comb pattern formed on a surface so that a position of the cutting residue in contact with a roll surface is adjusted in one direction or the other direction.