Electrode Plate Roller Structure for Uniform Uncoated Region Extension
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The production efficiency of batteries is hindered by the breakage of electrode plates during the cold-pressing procedure due to uneven extension rates between coated and uncoated regions, leading to folds and potential breakage.
Innovation Solution
An electrode plate extension device with rollers featuring protrusions and grooves that apply pressure to uncoated regions, combined with a heating mechanism to reduce residual stress, ensuring plastic deformation and consistent extension rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the electrode plate is conveyed through the extension device with protrusions and grooves, then the uncoated region is extended and folds are flattened, but the device complexity increases
Solution Approach 1:
The roller surfaces are designed with localized protrusions and grooves that create different surface characteristics in different regions. The protrusions apply localized pressure to extend the uncoated region, while the grooves receive and flatten the extended material, achieving non-uniform deformation exactly where needed without complicating the entire roller structure
Solution Approach 2:
The roller surface is segmented into distinct functional zones: protrusion regions that apply extending force, groove regions that receive and flatten the material, and transition regions with arc-shaped surfaces that guide the material flow. This segmentation allows each zone to perform its specific function independently, improving extension precision while keeping the overall structure manageable
2Productivity
If the protrusion applies pressure to the uncoated region, then the extension rate increases, but the risk of breaking the electrode plate increases
Solution Approach 1:
The arc-shaped transition surfaces on the protrusions and grooves perform preliminary shaping of the uncoated region before the main pressure application. This gradual deformation preparation reduces sudden stress concentration, allowing the material to extend more uniformly and reducing breakage risk while maintaining extension rate
Solution Approach 2:
The groove structure acts as a cushioning element that receives the extended uncoated region. The arc-shaped transition into the groove provides a gradual deformation zone that cushions the material during extension, preventing sudden breaks while maintaining high extension rates
3Productivity
If multiple protrusions and grooves are provided, then the production capacity is improved, but the device complexity increases
Solution Approach 1:
Each roller is designed to perform multiple functions: protrusions apply extending force, grooves receive and flatten material, and arc-shaped transitions guide material flow. This multi-functionality allows the system to achieve high production capacity with relatively simple roller structures, avoiding the need for multiple specialized components
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 device effectively flattens and extends uncoated regions, reducing breakage risks and enhancing production capacity and efficiency of electrode plates.
Implementation Method 1
a heating mechanism to reduce residual stress, ensuring plastic deformation
Implementation Method 2
the protrusion acts on the uncoated region and exerts a certain pressure on the uncoated region
Implementation Method 3
the uncoated region is subjected to plastic deformation while ensuring the safety
Data Source
Figure 1~2
Figure 3~5
Figure 6~9
AI summary
The present application discloses an electrode plate extension device and an electrode plate manufacturing apparatus. The electrode plate extension device includes a first roller and a second roller. The first roller includes a first body and a protrusion. The protrusion is provided on an outer peripheral surface of the first body and extends in a circumferential direction of the first body. The second roller includes a second body and a groove. The groove is provided in an outer peripheral surface of the second body and extends in a circumferential direction of the second body. The first roller and the second roller are arranged in parallel, a gap for allowing the passage of an electrode plate is formed between the first roller and the second roller, the protrusion is positioned corresponding to the groove, and the protrusion is configured to press against an uncoated region of the electrode plate to cause a plastic deformation of the uncoated region. According to the technical solutions provided by the present application, the production efficiency of batteries can be improved.