Electrode Rolling Roll Cleaning Apparatus with Aqueous Scraper and Dryer

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Solution Overview

Problem

Conventional rolling roll cleaning apparatuses using oil-based cleaning solutions are ineffective in removing contaminants from electrode rolling rolls, particularly for negative electrodes, leading to defects such as electrode surface stamping and detachment.

Innovation Solution

An apparatus and method incorporating an air spray unit, a heating unit, and a scraper unit, utilizing aqueous cleaning liquid and non-woven fabric cleaning members to effectively remove contaminants, with the scraper unit mechanically removing foreign substances and residual cleaning liquid.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If oil-based cleaning solution is used, then cleaning capability is improved, but residual cleaning liquid remains causing secondary contamination

Engineering Contradiction:

Improvecleaning capabilityVSAvoidsecondary contamination

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent changes the chemical composition parameter of the cleaning solution from oil-based to aqueous-based formulation. This parameter change allows the cleaning solution to be effectively removed by air drying and heating, eliminating residual contamination while maintaining cleaning capability through optimized aqueous chemistry

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent replaces the mechanical wiping system with a combination of air spray drying and heating. Instead of using cloth or paper to wipe the rolling roll (which may leave fibers or require excessive pressure), the system uses airflow and thermal energy to evaporate and remove the aqueous cleaning solution, achieving cleaner results without mechanical contact

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Object-affected harmful factors

If aqueous cleaning liquid is used, then residual cleaning liquid is removed, but cleaning effectiveness is reduced

Engineering Contradiction:

Improveresidual cleaning liquidVSAvoidcleaning effectiveness

Core Design Contradiction:

Object-affected harmful factorsVSReliability

Solution Approach 1:

The patent optimizes parameters of the aqueous cleaning solution including pH level, surfactant concentration, and temperature to enhance cleaning effectiveness. The aqueous solution is formulated with specific additives that improve its ability to emulsify and remove contaminants, compensating for the generally lower cleaning power of water compared to oil-based solutions

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent uses a composite cleaning solution comprising water, surfactants, and other cleaning agents. This composite formulation combines the benefits of aqueous-based easy evaporation with enhanced cleaning capabilities provided by chemical additives, achieving both effective contaminant removal and complete drying

Inventive Principle:

Principle #40Composite materials

3Reliability

If cleaning liquid is applied to cleaning member, then cleaning capability is improved, but device complexity increases

Engineering Contradiction:

Improvecleaning capabilityVSAvoidapparatus structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The cleaning member (cloth or paper) serves multiple functions: it applies the cleaning solution to the rolling roll, absorbs excess liquid, and provides mechanical contact for contaminant removal. This multi-functionality reduces the need for separate application and removal mechanisms, simplifying the overall apparatus structure while maintaining effective cleaning capability

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 solution effectively removes contaminants without leaving residual cleaning liquid, preventing secondary contamination and reducing electrode manufacturing defects.

Implementation Method 1

an air spray unit (220) for spraying air to the rolling roll (203)

Methodology Applied

Scientific EffectEvaporation: Evaporation

Implementation Method 2

a heating unit (230) for drying the rolling roll (203) by applying heat to the rolling roll (203)

Methodology Applied

Scientific EffectHeating: Heating

Implementation Method 3

a scraper unit (240) for removing cleaning liquid and foreign substances attached to the rolling roll (203)

Methodology Applied

Scientific EffectMechanical Force: Mechanical Force

Data Source

PatentUS11577290B2Apparatus for cleaning rolling roll for electrode and cleaning method

Publication Date: 2023.02.14 LG ENERGY SOLUTION LTD

AI summary

The present invention relates to an electrode rolling roll cleaning apparatus for removing pollutants on an electrode rolling roll, the apparatus comprising: a cleaning part for cleaning a rolling roll by bringing the rolling roll into contact with a cleaning member; an air spraying part for spraying air onto the rolling roll; a heating part for applying heat to the rolling roll so as to dry the rolling roll; and a scraper part for mechanically removing a cleaning liquid and foreign substances attached to the rolling roll.