Sheet Electrode Cutting With Synchronized Moving Blade Gap
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Solution Overview
Problem
Existing methods for cutting sheet electrodes from continuous electrode plates, such as laser engraving or mechanical cutting, often result in irregular cutting edges, oxidative defects, and reduced production efficiency due to the need for slow plate movement and potential misalignment, leading to battery malfunctions and performance degradation.
Innovation Solution
A cutting apparatus with a cutting blade and counter-blade system that moves in a plane transverse to the plate, allowing for high-speed cutting without stopping the plate, using a conveyor system with synchronized drive members to maintain zero relative speed and ensure precise, defect-free cuts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If laser engraving is used to cut the electrode plate, then cutting can be performed without contact, but the heat developed causes localized microfusions and oxidative phenomena, leading to defects on the cutting edge and loss of conductivity
Solution Approach 1:
The patent replaces the laser thermal cutting system with a mechanical cutting system using a cutting blade that physically shears the electrode plate. This substitution eliminates the heat-affected zone and oxidative phenomena associated with laser cutting, producing clean cutting edges without microfusions or conductivity loss.
Solution Approach 2:
The patent changes the cutting mechanism from thermal energy input (laser) to mechanical energy input (blade). This parameter change fundamentally alters the cutting process physics, avoiding the thermal damage and oxidation that plague laser cutting of conductive electrode materials.
2Manufacturing precision
If the plate is moved slowly during cutting to ensure precision, then cutting accuracy is maintained, but production speed is significantly reduced
Solution Approach 1:
The patent employs a support portion positioned upstream of the cutting location that pre-stabilizes the electrode plate before cutting occurs. This preliminary support action eliminates plate movement and vibration during cutting, allowing high-speed cutting while maintaining precision without requiring slow plate movement.
Solution Approach 2:
The support portion acts as a cushioning element that prevents plate deformation and movement during the cutting process. By providing this supportive cushion before and during cutting, the system can operate at high speeds while maintaining cutting accuracy, as the support compensates for any dynamic effects.
3Ease of operation
If the cutting blade is positioned far from the support portion to avoid interference, then cutting operation is simplified, but plate misalignment and protrusions occur, leading to localized voltage concentrations
Solution Approach 1:
The patent applies different functional qualities to different zones: the support portion provides stabilization and alignment in the upstream zone, while the cutting blade performs precise cutting in the cutting zone. This local differentiation of functions allows the blade to be positioned close to the support portion without interference, maintaining both operational simplicity and electrode alignment reliability.
Solution Approach 2:
The support portion serves as an intermediary element between the plate feed system and the cutting blade. It mediates the interaction by stabilizing the plate and ensuring proper alignment before the cutting action occurs, allowing close positioning of components without compromising reliability.
4Manufacturing precision
If the plate is stopped during cutting to ensure precision, then cutting accuracy is improved, but production efficiency is significantly reduced
Solution Approach 1:
The patent transitions from a static cutting approach (stopped plate) to a dynamic cutting approach where the plate continues moving during cutting. The support portion dynamically stabilizes the moving plate, enabling high-speed cutting without stopping, thus maintaining precision while dramatically improving production efficiency.
Solution Approach 2:
The patent ensures continuous plate movement throughout the cutting process rather than interrupting the flow to stop for cutting. The support portion enables this continuous action by providing stabilization during motion, eliminating idle time and significantly improving production efficiency while maintaining cutting precision.
Data Source
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AI summary
An apparatus (1) for making sheet electrodes (24), comprising: - a first transport surface (10) developing along a transport direction (T) between a first inlet (12) and a first outlet (13), configured to transport a continuous électrode plate (11) along the transport direction (T), - a second transport surface (22) developing along the transport direction (T) between a second inlet (26) and a second outlet, configured to transport sheet électrodes (24) along the transport direction (T), wherein the first transport direction (10) précèdes in the transport direction (T) the second transport direction (22) and wherein the first outlet (13) and the second inlet (26) are spaced apart from each other along the transport direction (T) by an interspace (52), - a cutting device (78) configured to eut the continuous électrode plate (11) into sheet électrodes (24), comprising a cutting blade (100) that coopérâtes with a counter-blade (104), said cutting blade (100) and said counter-blade (104) being aligned with a cutting plane (C) perpendicular to the transport direction (T), wherein the counter-blade (104) is arranged in the interspace (52) and wherein the cutting blade (100) is movable along the cutting plane (C) towards and away from said counter-blade (104), wherein the cutting blade (100) is further movable in a forward direction (S) parallel to and with direction concordant with the transport direction (T) in order to move the cutting plane (C) along said forward direction (S), and wherein the first outlet (13) of the first transport surface (10) and the second inlet (26) of the second transport surface (22) are movable along the forward direction (S) in order to displace the interspace (52) and the counter-blade (104) along the forward direction (S) while keeping the counter-blade (104) aligned with the cutting plane (C).