Cylindrical Battery Winding Alignment With Servo-Tension Grippers
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Solution Overview
Problem
Traditional winding apparatus for cylindrical batteries require manual operation, leading to misalignment of electrodes, material deformation, and low productivity, resulting in defects and potential swelling issues.
Innovation Solution
A semi-automatic cylindrical battery winding apparatus using grippers and servo motors to maintain constant tension and alignment within allowable tolerances, comprising separator unwinding, alignment, winding, and cutting parts, with servo motor-controlled grippers and LM guides for smooth operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual operation is used in traditional winding apparatus, then ease of operation is improved, but manufacturing precision deteriorates due to misalignment of electrodes
Solution Approach 1:
The patent replaces manual mechanical operation with an automated winding apparatus that uses a mandrel, separator unwinding mechanism, and electrode material feeding system. The automated system mechanically guides and winds the separator and electrode materials around the mandrel, eliminating manual positioning errors and achieving consistent alignment within allowable tolerances.
2Ease of operation
If manual positioning and guiding of electrode materials is used, then ease of operation is improved, but productivity deteriorates
Solution Approach 1:
The winding apparatus is designed to perform positioning and guiding operations automatically without operator intervention. The separator unwinding part, electrode material feeding mechanism, and winding system work together in an integrated automated process, allowing continuous operation and significantly enhancing productivity compared to manual positioning methods.
3Device complexity
If manual operation is used, then device complexity is reduced, but manufacturing precision deteriorates due to material deformation
Solution Approach 1:
The patent introduces a mandrel as an intermediary component that serves as a central core for winding the separator and electrode materials. The mandrel provides a fixed geometric reference that ensures proper alignment and spacing of the battery components during the winding process, preventing material deformation and maintaining manufacturing precision.
4Manufacturing precision
If automated winding with grippers and servo motors is used, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The winding apparatus incorporates a servo motor that provides dynamic control of the winding process. The servo motor can precisely control the rotation speed and tension applied during winding, adapting to different operational requirements to maintain alignment within allowable tolerances while managing the complexity through intelligent control.
Data Source
AI summary
A cylindrical battery winding apparatus comprises a pair of separator unwinding parts that unwind separators from separator rolls to separate a positive electrode material and a negative electrode material; a pair of alignment parts including grippers that pull and align one end of the positive electrode material and the negative electrode material respectively cut to a predetermined length; a winding part that stacks the positive electrode material/separator/negative electrode material and winds the stacked materials to form a jelly roll; and a cutting part that cuts the separator and cuts a fixing tape to secure the jelly roll.