Electrode Tab Guide Mechanism for Winding Alignment
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Solution Overview
Problem
The folding of electrode tabs during the manufacturing of secondary battery assemblies due to sagging or drooping caused by gravity and fluctuation leads to damage and affects the yield and stability of the final product.
Innovation Solution
An electrode plate winding device with a deformation reducing member, including a fixing part and guide parts, is used to guide and prevent the folding of electrode tabs as they pass through rollers, ensuring they remain in contact with the outer surface of the feed roller and maintain alignment, thereby reducing deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the electrode plate is wound at high speed to increase productivity, then the manufacturing efficiency is improved, but the electrode tabs may fold due to sagging and fluctuation
Solution Approach 1:
A guide member is introduced as an intermediary component between the feed roller and the electrode tab. This guide member actively guides the electrode tab during the winding process, preventing it from folding due to sagging or fluctuation while maintaining high winding speeds. The guide member acts as a mediator that ensures precise tab alignment without compromising productivity.
2Device complexity
If the electrode tab is allowed to move freely during winding, then the device complexity is reduced, but the tab folds due to gravity and fluctuation
Solution Approach 1:
The guide member serves as a simple yet effective intermediary component that prevents tab folding without significantly increasing device complexity. By positioning the guide member to pass through or guide the electrode tab, the system maintains structural simplicity while dramatically improving product reliability and preventing defects.
3Manufacturing precision
If the electrode tab is constrained to prevent folding, then the manufacturing precision is improved, but the device complexity increases
Solution Approach 1:
The guide member provides a simple constraint mechanism that improves tab alignment precision without adding significant device complexity. The guide member's design allows it to effectively constrain the electrode tab during winding while maintaining a relatively simple overall structure, avoiding the need for complex constraint systems.
Data Source
AI summary
A device for winding an electrode plate includes a feed roller configured to guide a first electrode plate or a second electrode plate, each of the first electrode plate and the second electrode plate including a plurality of electrode tabs protruding from one side, a deformation reducing member spaced apart from an outer circumferential surface of one end of the feed roller and configured to guide the electrode tabs fed to the feed roller to be brought into close contact with the outer circumferential surface of the one end of the feed roller to reduce deformation of the electrode tabs, and a winding unit configured to wind together the first electrode plate or the second electrode plate transferred by the feed roller and a separator interposed between the first electrode plate and the second electrode plate.