Electrode Plate Burr Repair Using Progressive Shaping Rollers
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Solution Overview
Problem
Current battery production technologies fail to completely remove burrs from electrode plates without damaging them, leading to a high risk of short circuits due to end-surface burrs piercing separators.
Innovation Solution
A device with a series of shaping rollers, each with a coaxial main body and shaping portion, gradually decreases the angle between the shaping surface and the electrode plate to transform end-surface burrs into flat-surface burrs, reducing the risk of short circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If current production technology is used to remove burrs, then burrs can be removed, but the electrode plates are damaged
Solution Approach 1:
The patent changes the geometric parameters of the shaping rollers, specifically the included angles of their shaping surfaces. Multiple shaping rollers are arranged with progressively decreasing included angles (e.g., 45°, 30°, 15°, 0°), creating a gradient that gradually transforms end-surface burrs into flat-surface burrs without damaging the electrode plate
Solution Approach 2:
The burr transformation process is segmented into multiple stages, with each shaping roller performing a specific stage of the transformation. The shaping rollers are arranged in sequence along the conveying direction, with each roller having a different included angle to progressively transform the burrs
2Reliability
If end-surface burrs are removed, then safety risk is reduced, but electrode plates are damaged
Solution Approach 1:
The patent converts the harmful end-surface burrs into less harmful flat-surface burrs through gradual transformation. Instead of completely removing the burrs (which would require aggressive methods damaging the electrode plate), the shaping rollers transform the burr geometry to reduce their harmfulness while preserving the electrode plate
3Object-generated harmful factors
If aggressive burr removal is applied, then burrs are eliminated, but electrode plate quality deteriorates
Solution Approach 1:
The shaping rollers perform preliminary transformation of the burrs before final electrode plate processing. By gradually transforming end-surface burrs into flat-surface burrs in advance, subsequent processing can be less aggressive, preserving electrode plate quality
Data Source
AI summary
A device for repairing burrs of an electrode plate is provided, which includes a plurality of shaping rollers, wherein a shaping surface is formed on an outer surface of each of the shaping rollers, and along a conveying direction of an electrode plate, included angles between the plurality of shaping surfaces and a surface of the electrode plate decrease in sequence. The device for repairing burrs of an electrode plate gradually decreases the angle between the burrs and the electrode plate until the burrs are flattened, and the end-surface burrs are finally transformed into flat-surface burrs, thereby reducing the safety risk of batteries.