Electrode Position Mapping for Cell-Level Defect Traceability
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Solution Overview
Problem
Existing battery manufacturing processes lack the ability to track electrode quality in units of battery cells prior to the notching process, leading to the need to discard entire electrode rolls when defects are detected, rather than identifying the specific stage and location of defects.
Innovation Solution
A system for tracking electrode positions using roll map information, including a notching controller, calculator, roll map generator, and mapping part to determine electrode coordinates and derive the origin of unit electrodes in the manufacturing process, enabling quality tracking before the notching process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the entire electrode roll is discarded when a defect is detected, then product reliability is improved, but material loss increases
Solution Approach 1:
The patent divides the continuous electrode roll into individually trackable segments by marking specific positions with identification information. This segmentation enables the system to identify and isolate only the defective portions rather than discarding the entire roll, thus resolving the contradiction between ensuring product reliability and reducing material loss.
Solution Approach 2:
The patent implements a feedback mechanism where defect detection information is fed back to the tracking system, which then uses the stored position information to precisely locate and isolate the defective segment. This feedback loop enables targeted removal of only the affected portions while preserving the rest of the electrode roll.
2Manufacturing precision
If quality tracking is performed in units of battery cells, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The patent uses identification marks as simplified copies or representations of the actual electrode positions. Instead of complex physical tracking mechanisms, the system uses mark information that can be easily detected and processed, thereby achieving precise quality tracking while minimizing system complexity.
Solution Approach 2:
The patent introduces identification marks as an intermediary element between the electrode and the tracking system. These marks serve as mediators that carry position information, enabling the tracking system to monitor electrode quality without requiring direct complex interaction with the electrode itself.
Data Source
AI summary
A systems and methods for tracking a position of an electrode. The system may include: a notching controller configured to store pitch information of a unit electrode and to acquire electrode coordinate information of the electrode in a roll-to-roll state during a notching process and a cell identification (ID) of the unit electrode; a calculator configured to calculate coordinates of the cell ID from the pitch information and the cell ID; a roll map generator configured to generate a roll map based on the electrode coordinate information transmitted from the notching controller; and a mapping part configured to compare the coordinates of the roll map with the coordinates of the cell ID to derive an electrode position of the electrode during the electrode manufacturing process from which the unit electrode originates.