Battery Electrode Coating Removal by Liquid Spray and Vacuum Suction
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Solution Overview
Problem
Existing methods for removing coating material from battery electrode plates, such as mechanical scraping, chemical cleaning, and laser cleaning, result in damage to the current collector, residual coating, and environmental pollution, and are inefficient.
Innovation Solution
A material removal device for battery electrode plates using a positioning member, spraying port, and suction port to isolate and remove coating material at the tab soldering location, reducing damage and residue by increasing fluidity with a liquid and using vacuum suction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If mechanical scraping cleaning method is used, then coating material can be removed, but current collector is damaged and powder sticks to electrode plate
Solution Approach 1:
The patent replaces the mechanical scraping system with a liquid spraying and suction system. The spraying port delivers liquid to the coating material, and the suction port removes the softened material through vacuum suction, eliminating direct mechanical contact between the scraper and current collector, thus preventing surface damage while maintaining removal efficiency
Solution Approach 2:
The patent introduces liquid as an intermediary substance between the removal system and the coating material. The liquid softens and fluidizes the coating material, allowing it to be suctioned away without requiring direct mechanical scraping that would damage the current collector surface
2Productivity
If chemical cleaning method is used, then coating material can be removed, but environment is polluted and production efficiency is low
Solution Approach 1:
The patent replaces chemical cleaning methods with a physical cleaning system using liquid spraying and vacuum suction. This substitution eliminates the need for chemical reagents that cause environmental pollution, while maintaining effective coating material removal through the combined spraying and suction mechanism
Solution Approach 2:
The patent uses hydraulic principles by spraying liquid onto the coating material to soften it, and pneumatic principles through vacuum suction to remove the softened material. This physical approach replaces chemical methods, avoiding environmental pollution while achieving efficient removal
3Productivity
If laser cleaning method is used, then coating material can be removed, but electrode plate surface is oxidized and strength is reduced
Solution Approach 1:
The patent replaces laser cleaning with a liquid spraying and suction system. This substitution avoids high-energy laser exposure that causes surface oxidation and strength reduction, while achieving effective coating removal through liquid softening and vacuum suction without thermal damage to the electrode plate surface
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 device accurately removes coating material with minimal damage to the current collector, improving production efficiency and soldering yield by isolating the removal region and using liquid spraying and suction.
Implementation Method 1
The spraying port is located in the hollow space, and configured to be in communication with a liquid source to spray a liquid onto the coating material of the predetermined region, so that fluidity of the coating material of the predetermined region is increased by the liquid
Implementation Method 2
The suction port is located in the hollow space and configured to be in communication with a vacuum generation device to suck the coating material of the predetermined region away from the current collector
Data Source
Figure 1-1~1-2
Figure 2~3
Figure 4
AI summary
Provided are a material removal device and method for a battery electrode plate, to remove a coating material of a predetermined region of the battery electrode plate. The battery electrode plate includes a current collector and a coating material attached to a surface of the current collector. The material removal device for a battery electrode plate includes a positioning member, a spraying port, and a suction port. The positioning member includes a side plate. A hollow space is defined by the side plate. The side plate is configured to be in contact with the current collector to isolate the coating material of the predetermined region in the hollow space. The spraying port is located in the hollow space, and configured to be in communication with a liquid source to spray a liquid onto the coating material of the predetermined region. The suction port is located in the hollow space and configured to be in communication with a vacuum generation device to suck the coating material of the predetermined region away from the current collector.