Electrode Roll Mapping for Cross-Process Battery Defect Tracking
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Solution Overview
Problem
Current methods for supervising secondary battery manufacturing processes fail to accurately track defects and quality information across electrode manufacturing and assembly processes, making it difficult to identify the source of defects in secondary batteries, especially when defects occur in subsequent processes.
Innovation Solution
An apparatus and method for creating a roll map that includes inspection and measurement devices to collect data on electrode processes, position measurement devices to track coordinate values, and a roll map make-up unit to visualize this data, allowing for the creation of a visual representation of the electrode manufacturing process that includes defect and quality information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If physical marking is done directly on the electrode, then defect information can be recorded, but it is difficult to mark on coating parts and the exact defect location cannot be displayed
Solution Approach 1:
The patent creates a virtual copy of the electrode in the form of a roll map that displays defect information. Instead of physically marking the electrode, the system generates a digital representation (roll map) that shows defect locations, types, and process information. This virtual copy allows precise display of defect locations without the limitations of physical marking on the actual electrode surface.
2Reliability
If physical marking is used to record quality information, then defect tracking is possible, but quality correlation analysis between electrode manufacturing and assembly processes cannot be performed
Solution Approach 1:
The roll map serves multiple functions: it tracks defects, records process information, enables quality correlation analysis, and provides a visual interface for monitoring. By integrating these functions into a single digital system, the patent eliminates the limitations of physical marking while enabling comprehensive quality management across different manufacturing stages.
Solution Approach 2:
The system establishes feedback loops where defect information from the electrode manufacturing process is continuously updated in the roll map and can be correlated with assembly process data. This feedback mechanism enables real-time quality monitoring and correlation analysis, allowing the system to trace defects back to their source processes and implement corrective actions.
Data Source
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Figure 2
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AI summary
The present invention provides an apparatus for making up a roll map for supervising a secondary battery manufacturing process. The apparatus comprises: an inspection and/or measurement device provided for at least one of the respective sub-processes of the secondary battery manufacturing process, being configured to inspect and/or measure an electrode subject to one of the respective sub-processes and acquire inspected and/or measured data specific to the respective sub-process; a data recording unit configured to collect process data including the inspected and/or measured data specific to the respective sub-process and to acquire corresponding coordinate value(s) of the position of the inspection and/or measurement on the electrode; and a roll map make-up unit configured to, based on the collected process data, make up a roll map including a visual imitation of the electrode subject to the respective sub-process, reflecting at least part of the process data acquired in the respective sub-process and the corresponding coordinate value(s) of the position of the inspection and/or measurement.