Electrode Plate Conveying With Negative Pressure Tab Stabilization
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Solution Overview
Problem
The production cost of electrode assemblies in electric vehicle batteries is high due to tab folding during high-speed conveying, which affects the quality and material utilization rate, as existing tab folding prevention methods often damage or generate dust.
Innovation Solution
An electrode plate conveying mechanism with a negative pressure supply unit, such as an air amplifier, is used to reduce air resistance and prevent tab folding by creating a negative pressure area around the tab, while being spaced apart from the conveying roller to avoid rubbing and dust generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If existing tab folding prevention methods are used, then tab folding is prevented, but the methods damage the tab or generate dust
Solution Approach 1:
The patent uses a negative pressure supply unit to create a negative pressure field around the tab during conveying. This pneumatic approach replaces mechanical contact methods with air pressure control, forming a protective air curtain that prevents tab folding without physical contact, thereby avoiding damage and dust generation while maintaining tab stability
Solution Approach 2:
The invention replaces traditional mechanical tab support structures with a negative pressure field. Instead of using physical supports that contact and potentially damage the tab, the system uses controlled negative pressure to hold and guide the tab through the conveying process, eliminating mechanical wear and dust generation
2Productivity
If high-speed conveying is used, then productivity is improved, but tab folding occurs during conveying
Solution Approach 1:
The negative pressure supply unit creates a controlled air environment around the tab during high-speed conveying. The pneumatic field provides continuous support and stabilization, allowing the tab to withstand high conveying speeds without folding, thus enabling high productivity while maintaining tab integrity
Solution Approach 2:
The system applies negative pressure before and during the conveying process to preemptively counteract forces that would cause tab folding. By establishing the protective negative pressure field in advance, the tab is pre-stabilized against the high-speed conveying forces, preventing folding before it occurs
3Loss of substance
If material utilization rate is increased, then production cost is reduced, but tab folding reduces material utilization rate
Solution Approach 1:
By using negative pressure to prevent tab folding, the system ensures that electrode plates are not damaged during conveying. This maintains high material utilization rates by preventing defects that would require scrapping or rework, thereby reducing production costs while preserving material efficiency
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
This solution increases material utilization rate and reduces production costs by preventing tab folding and ensuring product quality through stable and dust-free conveying.
Implementation Method 1
a negative pressure supply unit arranged on at least one end of the first conveying roller, spaced apart from the first conveying roller in an axial direction of the first conveying roller, and used for forming a negative pressure around a tab of the electrode plate
Implementation Method 2
the negative pressure is formed around the tab of the electrode plate by the negative pressure supply unit so as to reduce air resistance and then reduce the probability of tab folding
Implementation Method 3
The air amplifier includes an airflow-guiding cavity, an amplifying cavity communicating with the airflow-guiding cavity, and a gas intake port used for conveying compressed gas to the amplifying cavity
Implementation Method 4
the airflow-guiding cavity guides, through the suction port, outside gas into the amplifying cavity
Data Source
AI summary
An electrode plate conveying mechanism includes: a first conveying roller used for conveying an electrode plate; and a negative pressure supply unit arranged on at least one end of the first conveying roller, spaced apart from the first conveying roller in an axial direction of the first conveying roller, and used for forming a negative pressure around a tab of the electrode plate so as to prevent the tab from being folded.