Battery Electrode Coating Removal for Precise Tab Relocation
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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, environmental pollution, and low production efficiency, and are not precise enough to facilitate the relocation of the tab on the electrode plate.
Innovation Solution
A device and method using a housing with a spraying port and suction port to isolate and dissolve the coating material at the tab location, allowing for precise removal with minimal damage, utilizing a liquid to reduce viscosity and a vacuum to suck away the material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If mechanical scraping cleaning method is used, then coating material can be removed, but current collector is damaged and production efficiency is reduced
Solution Approach 1:
The patent replaces the mechanical scraping system with a liquid dissolution system. A liquid is sprayed onto the coating material to dissolve it chemically, and a suction system removes the dissolved material. This substitution eliminates direct mechanical contact between the scraper and current collector, thereby preventing scratches and breakage while achieving precise coating removal.
Solution Approach 2:
The patent introduces a liquid as an intermediary substance between the coating material and the removal system. The liquid dissolves the coating material, transforming it into a removable state without requiring direct mechanical force on the current collector. This intermediary approach enables gentle yet effective coating removal.
2Manufacturing precision
If mechanical scraping cleaning method is used, then coating material can be removed, but production efficiency is low
Solution Approach 1:
The patent implements a continuous removal process where liquid spraying, dissolution, and suction removal occur simultaneously in a continuous manner. The suction port continuously removes dissolved coating material while the spraying port continuously supplies fresh liquid, eliminating the intermittent scraping action of traditional methods and maintaining continuous productive action throughout the process.
3Manufacturing precision
If chemical cleaning method is used, then coating material can be removed, but environmental pollution is caused
Solution Approach 1:
The patent employs a hydraulic system using liquid spray and a pneumatic system using vacuum suction to remove coating material. The liquid dissolves the coating and the pneumatic suction removes the dissolved material and excess liquid. This combination of hydraulic and pneumatic methods provides an environmentally friendly alternative to traditional chemical cleaning, eliminating harmful chemical pollutants while maintaining effective coating removal.
4Manufacturing precision
If laser cleaning method is used, then coating material can be removed, but current collector strength is reduced
Solution Approach 1:
The patent replaces the laser cleaning system with a liquid dissolution and suction removal system. Instead of using high-energy laser beams that can overheat and weaken the current collector, the patent uses a gentle liquid-based chemical dissolution process followed by suction removal. This substitution eliminates thermal damage and strength reduction while achieving precise coating material removal.
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 coating material from the predetermined region on the battery electrode plate, reducing damage and residue, improving soldering yield and production efficiency while maintaining the integrity of the current collector.
Implementation Method 1
spray a liquid onto a portion of the coating material to dissolve the portion of the coating material, so that fluidity of the coating material of the predetermined region is increased
Implementation Method 2
suck the dissolved coating material away from the current collector
Data Source
AI summary
A device for removing a coating material from a battery electrode plate is provided. The battery electrode plate includes a current collector and a coating material attached to a surface of the current collector. The device includes a housing, a spraying port, and a suction port. The housing 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 a portion of the coating material 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 portion of the coating material to dissolve the coating material. The suction port is located in the hollow space and configured to be in communication with a vacuum generation device to suck the dissolved coating material away from the current collector.