Electrode Plate Line Meandering Correction With Vision Feedback
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Solution Overview
Problem
Existing electrode sheet manufacturing processes face issues with meandering due to long traveling paths and delayed detection of meandering, leading to defects and inefficiencies in the unwinding and processing of electrode sheets.
Innovation Solution
An apparatus comprising an unwinder, a meandering corrector with a detection sensor and pivot table, a press puncher, a detector with a vision sensor, and a controller that corrects meandering by determining the height of the active material and adjusting the electrode sheet's path to prevent meandering, using dancer rolls to maintain tension and reduce traveling distance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the LPC is positioned far from the press blanking to enable straight-line unwinding, then meandering prevention is improved, but additional meandering occurs due to the long traveling path
Solution Approach 1:
The patent replaces the mechanical LPC system with an optical detection system (detector positioned between press puncher and cutter) that uses image processing to detect meandering. This substitution allows for shorter mechanical travel paths while maintaining detection capability through optical fields that can sense position without physical contact over long distances.
Solution Approach 2:
The patent introduces a detector as an intermediary element between the press puncher and cutter. This detector captures images of the electrode sheet and provides meandering information to the controller, enabling correction without requiring the LPC to be positioned far away. The detector acts as a mediator that bridges the gap between mechanical processing and control functions.
2Measurement precision
If the inspector is positioned far from the LPC to detect meandering, then detection coverage is improved, but correction becomes too late when meandering suddenly occurs
Solution Approach 1:
The patent positions the detector between the press puncher and cutter, which is upstream in the processing sequence compared to traditional inspector positioning. This allows meandering to be detected earlier in the process, enabling preliminary correction before the electrode sheet reaches the cutter. The controller receives detection information and activates the meandering corrector in advance, preventing defective electrode sheets from being produced.
Solution Approach 2:
The patent implements a feedback loop where the detector continuously monitors the electrode sheet for meandering and provides real-time information to the controller. The controller then adjusts the meandering corrector based on this feedback, creating a closed-loop control system that responds dynamically to meandering conditions. This feedback mechanism ensures timely correction by constantly monitoring and adjusting the system state.
3Measurement precision
If the detector is positioned between the press puncher and the cutter, then meandering detection precision is improved, but the device complexity increases
Solution Approach 1:
The detector positioned between the press puncher and cutter serves multiple functions: it detects meandering of the electrode sheet, provides positioning information for the cutter, and enables quality control. This multi-functional detector reduces the need for separate detection and control systems, thereby offsetting the increased device complexity with functional consolidation and improved overall system efficiency.
Data Source
AI summary
An apparatus for manufacturing an electrode plate, includes an unwinder on which an electrode reel is installed; a meandering corrector correcting meandering of an electrode sheet unwound from the electrode reel; a press puncher disposed at a rear end of the meandering corrector; a cutter disposed at a rear end of the press puncher; a detector disposed between the press puncher and the cutter to acquire an image of the electrode sheet; and a controller connected to the detector and the meandering corrector.