Battery Electrode Laser Notching With Air Pusher Dust Separation

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

The existing secondary battery electrode production systems face high maintenance costs due to the use of molds for notching, and there are issues with dust contamination during laser notching.

Innovation Solution

A secondary battery electrode production system that uses a laser portion for notching without a mold, accompanied by a pusher portion with an air blower to fix and separate the electrode material, and an air generating portion with a fume hood to manage dust and scrap.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a mold is used for notching, then the notching process can be performed, but maintenance costs increase and components need replacement after repeated use

Engineering Contradiction:

Improvenotching process reliabilityVSAvoidmaintenance cost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent replaces the mechanical mold-based notching system with a laser-based notching system. The laser beam performs the notching function without physical contact, eliminating wear and tear on mechanical components. This substitution resolves the contradiction by maintaining notching reliability while eliminating maintenance costs and component replacement needs.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent extracts the notching function from the mechanical mold system and implements it through a laser beam. By separating the notching function from the mechanical mold structure, the system eliminates the maintenance and replacement issues associated with physical mold components while preserving the notching capability.

Inventive Principle:

Principle #2Taking out (Extraction)

2Ease of manufacture

If a laser is used for notching, then maintenance costs decrease, but dust adheres to the notching line and contaminates the electrode surface

Engineering Contradiction:

Improvemaintenance costVSAvoiddust contamination

Core Design Contradiction:

Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The patent introduces air blowers as intermediary devices that generate airflow to remove dust and debris from the notching line during laser operation. This mediator prevents dust accumulation and contamination without interfering with the laser notching process, resolving the contradiction between low maintenance costs and dust contamination.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent converts the harmful dust byproduct of laser notching into a manageable issue by using air blowers to actively remove and redirect the dust away from the electrode surface. The dust generation is transformed from a contamination problem into a controlled removal process, maintaining both low maintenance costs and clean electrode surfaces.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

3Stability of the object's composition

If the pusher presses both coated and non-coated portions, then the electrode material is fixed stably, but the structure becomes more complex

Engineering Contradiction:

Improveelectrode material stabilityVSAvoidpusher structure complexity

Core Design Contradiction:

Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The patent divides the pusher into multiple independent pressing elements that can be selectively positioned to press different portions of the electrode material (coated and non-coated areas). This segmentation allows stable fixation through distributed pressure points while keeping each individual pressing element simple in structure, resolving the contradiction between stability and complexity.

Inventive Principle:

Principle #1Segmentation

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 solution allows for nearly permanent use of the notching portion, reduces dust contamination, and increases production speed and quality by effectively separating scrap and dust.

Implementation Method 1

a laser portion configured to irradiate the electrode material with a laser beam along a notching line

Methodology Applied

Scientific EffectLaser heating: Laser

Implementation Method 2

an air blower connected to the pusher, wherein the pusher, during notching, makes contact with an area of the electrode material excluding the notching line

Methodology Applied

Scientific EffectAir flow: Fluid Spray

Data Source

PatentUS20250128355A1Secondary battery electrode production system

Publication Date: 2025.04.24 YOUILET CO LTD

AI summary

An embodiment is a secondary battery electrode production system comprising a notching portion, wherein the notching portion includes a laser portion configured to irradiate the electrode material with a laser beam along a notching line, and a pusher portion disposed above the electrode material, and the pusher portion comprises a pusher in contact with the electrode material and an air blower connected to the pusher, wherein the pusher, during notching, makes contact with an area of the electrode material excluding the notching line, fixing the electrode material while fixing both a coated portion and a non-coated portion of the electrode material, wherein the pusher includes a lower block in contact with the electrode material, an upper block coupled to the lower block, and an air nozzle portion that corresponds to a gap between the lower block and the upper block, and the pusher includes a first pusher and a second pusher.