Production Line Quality Tracking With Parent-Child Traceability
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Solution Overview
Problem
Lithium-ion battery manufacturing faces inefficiencies in traditional production control techniques, leading to challenges in ensuring quality compliance, traceability, and identifying defects, which can result in scrap rates and product recalls.
Innovation Solution
A computer-implemented method and apparatus for production tracking that creates a graphic representation of the production line, captures data on equipment stations, and determines quality status information in a parent/child sequence, enabling real-time monitoring and root cause analysis using AI and ML for quality management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional production control techniques are used, then device complexity is reduced, but quality tracking precision and traceability deteriorate
Solution Approach 1:
The production line is divided into multiple equipment stations, each tracked independently with unique identifiers. Production units are segmented into parent/child relationships across stations, enabling precise quality tracking at each stage without requiring a monolithic complex system.
Solution Approach 2:
A graphic representation (visual copy) of the production line is created and stored, allowing quality status information to be displayed and tracked without physically altering the production process. This digital twin approach enables precise monitoring with minimal added complexity.
2Reliability
If real-time quality monitoring is implemented, then quality compliance is improved, but loss of time in data processing increases
Solution Approach 1:
Quality status information is determined and recorded at each equipment station as production units pass through, rather than analyzing all data afterward. Turnup events trigger immediate quality assessments, enabling real-time compliance monitoring without post-processing delays.
Solution Approach 2:
The system continuously monitors quality status and provides feedback by displaying information on the graphic representation. This real-time feedback loop enables immediate detection of quality issues and rapid response, maintaining high compliance without time loss.
3Measurement precision
If comprehensive data capture at each equipment station is implemented, then measurement precision is improved, but device complexity increases
Solution Approach 1:
A single graphic representation system serves multiple functions: tracking production units, displaying quality status, identifying parent/child relationships, and enabling root cause analysis. This multi-functional approach captures comprehensive data without requiring separate complex systems for each function.
Solution Approach 2:
Multiple data elements (equipment station identifiers, production unit identifiers, quality status information, timestamps) are merged into a unified graphic representation. This consolidation enables comprehensive data capture while simplifying the overall system architecture through integration.
4Loss of information
If parent/child sequence tracking is implemented, then traceability is improved, but loss of time in analyzing production history increases
Solution Approach 1:
Parent/child relationships between production units across equipment stations are established and recorded in real-time as production occurs. This preliminary documentation of relationships eliminates the need for time-consuming historical analysis, as traceability information is already structured and available.
Solution Approach 2:
The graphic representation provides immediate visual feedback on quality status across the parent/child sequence. When quality issues are detected, the system instantly displays relevant information about affected production units and their relationships, enabling rapid traceability without analysis delays.
Data Source
AI summary
Methods, apparatuses, and computer program products for production tracking are provided. For example, a computer-implemented method may include receiving user selections corresponding to (i) equipment stations of a production line, (ii) links from each equipment station to preceding and/or succeeding equipment stations, and (iii) data to be captured each time a turnup event indicating completion of a production unit occurs; creating a graphic representation of the production line; each time a turnup event occurs at one of the equipment stations, determining (i) any immediately preceding equipment stations, (ii) a turnup start time, and (iii) one or more parent production units created by the immediately preceding equipment station immediately prior to the turnup event; obtaining quality status information for each production unit in a parent/child sequence; and displaying the graphic representation of the production line with the quality status information for each of the production units.