Battery Electrode Plate Rejection Timing for Separator Waste Prevention
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Solution Overview
Problem
In battery production, defective electrode plates often lead to unusable laminated battery cells, resulting in waste separators, as existing technologies lack effective methods for defect rejection during the assembly process.
Innovation Solution
A control method and apparatus for defect rejection in battery electrode plates, utilizing a drive mechanism, defective electrode plate detection, and a rejection mechanism to accurately identify and reject defective plates by recording and updating distances, ensuring they are not combined with separators, incorporating a stack system for error reduction and computational efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If defective electrode plates are not detected and rejected during transmission, then production continuity is maintained, but separators are wasted due to combination with defective plates
Solution Approach 1:
The defect detection mechanism identifies defective electrode plates during the transmission process before they reach the combination stage with separators. By performing detection preliminarily and recording the position information of defective plates, the system enables targeted rejection without requiring complex post-detection handling mechanisms, thus preventing separator waste while maintaining reasonable system complexity
Solution Approach 2:
The control mechanism serves as an intermediary that receives detection signals from the defect detection mechanism, calculates the appropriate rejection timing based on transmission distance, and controls the rejection mechanism accordingly. This intermediary control system coordinates between detection and rejection without requiring direct mechanical coupling, optimizing the balance between waste prevention and system complexity
2Loss of substance
If real-time defect detection and rejection is implemented, then separator waste is prevented, but system complexity and control difficulty increase
Solution Approach 1:
The defect detection mechanism provides real-time feedback on the presence and position of defective electrode plates during transmission. The control mechanism uses this feedback to dynamically adjust rejection timing by calculating the distance traveled by defective plates and determining when they will reach the rejection mechanism, enabling precise control without excessive system complexity
Solution Approach 2:
The system replaces complex mechanical real-time tracking mechanisms with a simpler approach: recording the position of defective plates during transmission and using control calculations to determine rejection timing. This substitution of mechanical tracking with computational control reduces overall system complexity while maintaining real-time defect rejection capability
3Measurement precision
If defect rejection is performed without accurate position tracking, then system simplicity is maintained, but rejection accuracy decreases leading to separator waste
Solution Approach 1:
The system preliminarily records the position information of defective electrode plates when they are detected during transmission. By capturing this position data early and maintaining it for subsequent rejection operations, the system eliminates the need for complex real-time position tracking during the rejection phase, achieving both high accuracy and time efficiency
Solution Approach 2:
Instead of continuously tracking the real-time position of defective plates, the system creates a copy of the position information at the moment of detection and uses this copied data for rejection control. This copying approach maintains rejection accuracy while significantly reducing the computational time and system complexity required for continuous position monitoring
Data Source
AI summary
A control method includes during a transmission process of a battery electrode plate to a defect rejection mechanism as driven by a drive mechanism, upon a defective electrode plate detection mechanism detecting that the battery electrode plate is a defective electrode plate, recording a first distance of the defective electrode plate, which is a distance from the defective electrode plate to the defect rejection mechanism; obtaining a second distance that the defective electrode plate moves as driven by the drive mechanism, during a transmission process of the defective electrode plate from the defective electrode plate detection mechanism to the defect rejection mechanism; updating the first distance of the defective electrode plate based on the second distance; and controlling the defect rejection mechanism to reject the defective electrode plate, under a condition that the updated first distance of the defective electrode plate satisfies a preset condition.