Negative Electrode Plate Edge Deburring by Controlled Flame Ablation
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Solution Overview
Problem
Burr formation at the edge of negative electrode plates during slitting leads to poor self-discharging and potential safety issues in batteries, which existing solutions like thickening separators or increasing separator layers fail to adequately address.
Innovation Solution
A combusting treatment is applied to the edge of the negative electrode plate using a fuel gas to ablate burrs, with controlled flame injection angles, distances, speeds, and air-fuel ratios to stabilize flames and efficiently remove burr products.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If combusting treatment is applied to ablate burrs, then burr defect rate is reduced, but surface cleanliness may be compromised
Solution Approach 1:
The patent extracts and removes the harmful burr ablation products from the electrode plate surface using a suction device, separating the cleaning function from the combusting treatment to maintain surface cleanliness while effectively removing burrs
Solution Approach 2:
The patent introduces gas flow as an intermediary medium that serves dual functions: stabilizing the combustion process for effective burr removal and carrying away ablation products to maintain surface cleanliness
2Manufacturing precision
If fuel gas is injected at higher flow rates for stronger flames, then burr ablation effectiveness is improved, but energy consumption increases
Solution Approach 1:
The patent optimizes combustion parameters including fuel gas flow rate, injection pressure, and air-fuel ratio to achieve the minimum energy consumption required for effective burr ablation, avoiding excessive energy use while maintaining treatment effectiveness
Solution Approach 2:
The patent implements feedback control by monitoring the combustion process and adjusting fuel gas injection parameters in real-time based on the actual burr removal effectiveness and surface condition, ensuring energy-efficient operation
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 method effectively reduces burr defect rates, maintaining surface cleanliness and improving battery performance while minimizing operational costs and material expenses.
Implementation Method 1
the combusting treatment includes combusting a fuel gas and processing the specified part using generated flames
Implementation Method 2
the edge of the negative electrode plate is subjected to combusting treatment to ablate the burrs by the flames
Data Source
AI summary
Disclosed are a negative electrode plate and a processing method therefor, a battery, and an electrical apparatus. The processing method for a negative electrode plate includes: performing combusting treatment on a specified part of the negative electrode plate, where the specified part at least includes an edge of the negative electrode plate, and the combusting treatment includes combusting a fuel gas and heating the specified part using generated flames. In the processing method for a negative electrode plate, the edge of the negative electrode plate is subjected to combusting treatment to ablate burrs by the flames, which facilitates ameliorating the burr problem of the negative electrode plate at the edge.