Electrode Input Inclination Control for Stable Winding Alignment
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Solution Overview
Problem
Existing electrode meandering correction devices fail to effectively stabilize the input inclination of electrodes during the transfer process, leading to high meandering defects due to input instability, which affects the quality of the jelly roll electrode assembly.
Innovation Solution
A meandering correction device that includes an input inclination adjustment mechanism and an edge position control unit with a determination edge position sensor, which feedback-controls the electrode's edge position to match a reference value, and adjusts the input inclination based on data from the sensor to correct for input instability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a final EPC unit is provided to measure and correct electrode edge position, then meandering during winding is reduced, but input instability and meandering defects at the input stage remain high
Solution Approach 1:
The patent applies preliminary action by providing an input EPC unit that measures and corrects electrode edge position at the input stage, before the electrode enters the winding process. This preliminary correction prevents input instability and meandering defects from occurring in the first place, rather than only correcting them at the final winding stage.
Solution Approach 2:
The patent segments the meandering correction function into two independent units: an input EPC unit for correcting edge position at the input stage, and a final EPC unit for correcting edge position before winding. This segmentation allows each unit to address specific stages of the process, improving overall correction effectiveness.
2Manufacturing precision
If feedback control is applied at the final stage only, then edge position can be corrected before winding, but input inclination instability cannot be effectively stabilized
Solution Approach 1:
The input EPC unit performs preliminary feedback control by measuring electrode edge position and correcting input inclination at the input stage. This preliminary feedback control stabilizes input inclination before the electrode proceeds through the winding process, preventing instability from propagating through the system.
Solution Approach 2:
The patent implements feedback control at both the input stage (input EPC unit) and final stage (final EPC unit). Each unit measures edge position, compares it to a reference value, and adjusts the electrode position accordingly, creating closed-loop feedback control that stabilizes input inclination and ensures accurate edge position throughout the process.
Data Source
AI summary
The present technology provides a meandering correction device for electrode transfer that improves instability when an electrode is input by using determination edge position sensor (EPS) value data of the electrode hat changes over time when the edge position of the electrode is feedback-controlled by an edge position control (EPC) unit before being wound around a winding core to correct the input inclination of the electrode, and a method of correcting electrode meandering.