Electrode ID Tracking in Battery Manufacturing for Traceability
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Solution Overview
Problem
Existing secondary battery manufacturing systems lack the capability to effectively track and manage history data of electrode production, which affects the traceability and reliability of the manufacturing process.
Innovation Solution
A secondary battery manufacturing system and method that includes a first and second electrode cutter, an electrode ID reader, and a controller to collect and store coordinate-related electrode ID data, using rotary encoders to determine input amounts and cut counts, enabling precise tracking of electrode sheets and bi-cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional secondary battery manufacturing systems are used, then the manufacturing process can be completed, but the capability to track and manage history data of electrode production is lacking
Solution Approach 1:
The system assigns unique electrode IDs to electrodes during the electrode production process before assembly. This preliminary identification enables subsequent tracking of electrode history data including manufacturing parameters, quality inspection results, and process information throughout the battery manufacturing workflow.
Solution Approach 2:
The control unit collects and stores history data of electrodes based on their unique IDs, creating a feedback loop where manufacturing data is continuously recorded and made accessible. This enables traceability by allowing retrieval and analysis of electrode production history for quality control and process optimization.
2Productivity
If multiple electrode sheets are processed simultaneously, then productivity increases, but the complexity of tracking individual electrode history data increases
Solution Approach 1:
The system segments the tracking task by assigning unique electrode IDs to individual electrodes or electrode groups. This segmentation allows the control unit to manage and track multiple electrodes independently through their unique identifiers, simplifying the data structure and making the tracking system more manageable despite processing multiple sheets simultaneously.
Solution Approach 2:
The electrode ID serves as an intermediary between the physical electrode and its history data. This intermediate identifier decouples the complexity of tracking multiple electrodes from the actual electrodes themselves, allowing the system to process multiple electrode sheets while maintaining simple, standardized data access through unique IDs.
Data Source
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AI summary
Example embodiments provide a secondary battery manufacturing system. The secondary battery manufacturing system includes a first electrode cutter configured to cut a first electrode sheet unwound from a first electrode roll to provide a plurality of first electrodes, a second electrode cutter configured to cut a second electrode sheet unwound from a second electrode roll to provide a plurality of second electrodes, a third electrode cutter configured to cut a third electrode sheet unwound from a third electrode roll to provide a plurality of third electrodes, an electrode identifier (ID) reader configured to sense an electrode ID of an electrode tab of each of the first, second or third electrodes selected from among the plurality of first electrodes, the plurality of second electrodes, and the plurality of third electrodes, and a controller configured to collect coordinate-related electrode ID data, based on a first input amount of the first electrode sheet, a second input amount of the second electrode sheet, a third input amount of the third electrode sheet, and an electrode ID sensing signal.