Electrode Coating Residue Extraction Using Mobile Vacuum Tank

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Solution Overview

Problem

The existing methods for removing active material residue from electrode coating assemblies are cumbersome, leading to assembly downtime and potential impurities in subsequent electrode manufacturing, which can result in subpar products.

Innovation Solution

A system comprising a mobile tank, a conduit, and a pumping device is used to extract active material residue from the assembly. The mobile tank is movable and equipped with a carriage, allowing it to be easily attached to and detached from different assemblies. The pumping device creates a negative pressure to suck the residue from the assembly through the conduit into the mobile tank.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If manual cleaning methods are used to remove active material residue from the assembly, then the residue can be removed, but the process is cumbersome and leads to assembly downtime

Engineering Contradiction:

Improveproduct qualityVSAvoidassembly downtime

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent employs a pumping device that generates negative pressure to automatically suction active material residue from the assembly through a conduit system. This pneumatic cleaning method replaces cumbersome manual cleaning, efficiently removes residue without causing assembly downtime, and prevents impurity contamination in subsequent electrode manufacturing

Inventive Principle:

Principle #29Pneumatics and hydraulics

2Productivity

If the assembly is not cleaned properly before switching to different active material, then assembly downtime is reduced, but impurities contaminate subsequent electrode manufacturing

Engineering Contradiction:

Improvemanufacturing efficiencyVSAvoidelectrode quality

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The pumping device creates negative pressure to automatically suction active material residue from all parts of the assembly including hard-to-reach areas. This ensures thorough cleaning before switching to different active materials, preventing impurity contamination while maintaining continuous production flow and electrode quality

Inventive Principle:

Principle #29Pneumatics and hydraulics

Solution Approach 2:

The system performs preliminary cleaning of the assembly by removing active material residue before the assembly is used for coating different electrode materials. This advance cleaning prevents impurity contamination in subsequent manufacturing processes

Inventive Principle:

Principle #10Preliminary action

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

This system allows for efficient and economical extraction of active material residue, reducing assembly downtime and preventing impurities, thereby improving the quality and efficiency of electrode manufacturing.

Implementation Method 1

The pumping device is configured for applying a negative pressure to the mobile tank for sucking active material residue from the assembly through the conduit into the mobile tank

Methodology Applied

Scientific EffectNegative pressure: Pressure Gradient

Data Source

PatentEP4559585A1System and method for extracting active material residue from an assembly for coating an electrode with an active material layer and the corresponding assembly; method for manufacturing an electrode, electrode and battery.

Publication Date: 2025.05.28 LG ENERGY SOLUTION LTD

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AI summary

A system for extracting active material residue from an assembly for coating an electrode with an active material layer, comprises a mobile tank configured to hold active material residue, a conduit attached to the mobile tank and connectable to the assembly, and a pumping device configured to apply a negative pressure to the mobile tank for sucking active material residue from the assembly through the conduit.