Separator Folding Path Compensation for Electrode Assembly Tension
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for manufacturing electrode assemblies face challenges in maintaining consistent tension and length of separators during the folding process, leading to potential deviations that affect the quality and efficiency of the assembly.
Innovation Solution
An apparatus and method that utilize a control unit to manage a compensation unit, adjusting the movement of a folding unit based on structural and motion parameters to compensate for changes in the separator's length, employing a two-dimensional coordinate system to actively manage tension deviations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the folding unit moves to fold the separator, then the separator is folded into stack structure, but the movement path length of the separator changes causing tension deviation
Solution Approach 1:
The compensation unit is designed to be movable rather than fixed, allowing it to dynamically adjust its position along the separator movement path. This dynamic adjustment compensates for the changing movement path length caused by folding unit motion, maintaining consistent separator tension throughout the folding process
Solution Approach 2:
The control unit receives information about the folding unit's position and calculates the corresponding movement path length changes. Based on this feedback, the control unit automatically adjusts the compensation unit's position to maintain constant separator tension, creating a closed-loop control system that resolves the tension deviation problem
2Productivity
If the separator movement path length changes during folding, then the stack structure is formed, but the separator tension deviates from target value
Solution Approach 1:
The compensation unit acts as an intermediary element between the separator supply unit and the folding unit. It introduces a controllable adjustment mechanism in the separator path that can compensate for length changes, serving as a mediator that balances the conflicting requirements of productivity and precision
Solution Approach 2:
The system dynamically changes the physical parameter of the separator movement path by adjusting the compensation unit's position. This parameter change allows the movement path length to be actively controlled and adjusted in real-time, maintaining separator tension within target ranges despite the folding process
3Ease of operation
If the folding unit reciprocates between positions, then the separator is folded completely, but the control length varies requiring active compensation
Solution Approach 1:
The system replaces complex mechanical linkages that would physically connect the folding unit's motion to a mechanical compensator with an electronic control system. The control unit calculates compensation amounts based on folding unit position and sends control signals to the compensation unit, substituting mechanical coupling with electronic control for greater flexibility and precision
Data Source
AI summary
An apparatus for manufacturing an electrode assembly formed in a stack structure of an electrode plate and a separator includes a separator supplier configured to supply the separator, a folder that moves with respect to a stack table to fold the separator on the stack table, a guide provided on a movement path of the separator from the separator supplier to the folder to guide movement of the separator, a compensator that is movable to compensate for a change in length of the movement path of the separator, and a controller configured to control movement of the compensator based on structural parameters for a structure of the apparatus and motion parameters for a motion of the folder to compensate for the change in length of the movement path of the separator.