Electrode Coating Magnet Layout for Metal Debris Removal
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Solution Overview
Problem
Conventional methods for manufacturing electrode bodies in lithium-ion rechargeable batteries may not adequately address the issue of metal objects within the mixture paste, which can affect the quality and efficiency of the battery production process.
Innovation Solution
An apparatus and method that utilize a coater to apply a mixture paste containing an electrode active material to a substrate, and an attraction magnet to attract metal objects within the paste, changing the surface shape and allowing for efficient removal, along with a collection magnet to collect metal objects at a discharge slot.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a magnet is used to remove metal objects from mixture paste, then metal objects can be removed, but the surface shape of the applied layer changes
Solution Approach 1:
The patent extracts the metal object removal function from the coating process by placing the magnet at the discharge slot, allowing metal objects to be removed before they affect the applied layer surface shape
Solution Approach 2:
The magnet is positioned to remove metal objects from the mixture paste before the paste is applied to the substrate, preventing surface deformation rather than correcting it afterward
2Quantity of substance
If the attraction magnet is positioned to attract metal objects, then metal objects are collected, but the applied layer surface shape changes
Solution Approach 1:
The magnet extracts metal objects from the mixture paste at the discharge slot, separating them before application to prevent surface deformation
Solution Approach 2:
The discharge slot acts as an intermediary zone where the magnet collects metal objects from the paste without the magnet directly contacting the applied layer, thus preventing surface shape changes
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 approach enables the detection and removal of metal objects, ensuring high-quality electrode body production by improving the efficiency of the battery manufacturing process and maintaining the integrity of the battery components.
Implementation Method 1
when the mixture paste contains a metal object, the attraction magnet attracts the metal object so as to change a shape of a surface of the applied layer
Implementation Method 2
a collection magnet arranged on the discharge slot to collect a metal object contained in the mixture paste
Data Source
AI summary
An apparatus for manufacturing an electrode body includes a coater and an attraction magnet. The coater applies a mixture paste including an electrode active material to a substrate that is configured to be a current collector. The attraction magnet is opposed to an applied layer of the mixture paste formed on the substrate so that when the mixture paste contains a metal object, the attraction magnet attracts the metal object so as to change a shape of a surface of the applied layer.