Battery Cell Tape Cutter Movement to Prevent Adhesive Buildup
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Solution Overview
Problem
The existing tape attachment processes for battery cells face issues where adhesive is consistently attached to a specific portion of the cutting blade of the cutter, interfering with the cutting process and potentially contaminating the tape and peripheral components.
Innovation Solution
A tape attachment apparatus is designed with a cutter having a cutting blade wider than the tape, along with a cutter elevation module and a cutter movement module to move the cutter in the Y-axis direction after a predetermined number of cutting operations, thereby changing the area of the cutting blade used and preventing adhesive buildup on a specific portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the cutter remains stationary in the same position for continuous cutting operations, then the cutting process is simple and efficient, but adhesive accumulates on a specific portion of the cutting blade interfering with cutting and potentially contaminating the tape
Solution Approach 1:
The cutter is designed to move dynamically in the Y-axis direction between cutting operations. The cutter movement module shifts the cutter's position along the Y-axis, causing different portions of the cutting blade to contact the tape in successive operations. This dynamic positioning prevents adhesive accumulation on a fixed location of the blade, maintaining cutting quality without sacrificing productivity.
2Reliability
If the cutter is removed and re-mounted to clean the cutting blade, then adhesive contamination is prevented, but process time increases significantly
Solution Approach 1:
The system performs self-cleaning through automated cutter movement. Instead of requiring manual removal and re-mounting of the cutter for cleaning, the cutter movement module automatically repositions the cutter to different Y-axis locations, allowing adhesive to be distributed across different blade portions or removed by cleaning mechanisms at specific positions, thereby maintaining cutting quality without time loss.
Solution Approach 2:
The dynamic repositioning of the cutter in the Y-axis direction enables continuous operation while preventing adhesive buildup. The cutter moves to different positions between cuts, effectively self-cleaning by distributing adhesive contact across the blade surface rather than concentrating it on one spot, eliminating the need for time-consuming manual intervention.
3Force
If a wider cutting blade is used to provide sufficient cutting force, then cutting capability is improved, but the area of the blade exposed to adhesive increases, potentially worsening contamination
Solution Approach 1:
The wider cutting blade is combined with dynamic Y-axis movement to resolve the contamination issue. While the blade maintains sufficient width for effective cutting, its position is continuously varied in the Y-axis direction, ensuring that no single area of the broad blade surface accumulates adhesive. This dynamic distribution prevents contamination despite the larger blade area.
Solution Approach 2:
Different portions of the wide cutting blade are used sequentially for cutting different tapes. The cutter movement module ensures that each local area of the blade contacts the adhesive only temporarily before moving to a new position, creating localized usage patterns that prevent overall blade contamination while maintaining the benefits of the wide blade for cutting force.
Data Source
AI summary
A tape attachment apparatus includes a tape feed unit configured to feed a tape to a battery cell; and a tape cutting unit configured to cut the tape fed from the tape feed unit. The tape cutting unit includes a cutter having a cutting blade with a larger width than a width of the tape and configured to cut the tape; a cutter elevation module configured to move the cutter in a Z-axis direction being perpendicular to a surface of the tape; and a cutter movement module configured to move the cutter in a Y-axis direction being perpendicular to a feeding direction of the tape.