Electrode Sheet Lamination Alignment With Visual Deviation Correction
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Solution Overview
Problem
Conventional electrode sheet lamination equipment lacks a monitoring mechanism to detect and correct sheet deviation in multiple directions, leading to poor alignment and issues such as powder shedding and lithium precipitation, affecting battery cell performance consistency.
Innovation Solution
An electrode sheet thermal-lamination adjustment mechanism with a feeding assembly, deviation correction assembly, and visual recognition assembly, enabling three-axis adjustment of electrode sheets to ensure precise alignment before thermal lamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional thermal-lamination equipment is used without monitoring mechanism, then the feeding speed can be maintained at high speed, but the alignment precision of electrode sheets deteriorates due to undetected sheet deviation
Solution Approach 1:
The visual recognition assembly performs detection of electrode sheet deviation before the feeding process, and the deviation correction assembly pre-adjusts the sheet position to correct direction. This preliminary action ensures that alignment precision is maintained at the source before high-speed feeding begins, preventing deviation from occurring in the first place rather than detecting and correcting it after the fact.
Solution Approach 2:
The system establishes a closed-loop feedback mechanism where the visual recognition assembly continuously monitors electrode sheet position, transmits deviation information to the control system, which then commands the deviation correction assembly to adjust the sheet position. This real-time feedback loop enables high-speed feeding while maintaining precision by constantly correcting deviations as they occur during the feeding process.
2Manufacturing precision
If single-direction deviation correction is implemented, then the correction mechanism is simple, but alignment precision deteriorates because deviations in multiple directions (left and right sides) cannot be detected or corrected
Solution Approach 1:
The system transitions from single-direction correction to two-dimensional correction by adding correction capabilities in both the X direction (conveying direction) and the Y direction (perpendicular to conveying direction). The visual recognition assembly captures images to detect deviations in both dimensions, and the correction assembly uses multiple correction members positioned at different locations to independently adjust the sheet position in both directions, achieving comprehensive alignment precision.
Solution Approach 2:
The deviation correction assembly is segmented into multiple independent correction members (first deviation correction member for X-direction, second and third deviation correction members for Y-direction) that can operate independently. Each correction member handles specific directional adjustments, allowing the system to correct multi-directional deviations through coordinated action of segmented components rather than requiring a single complex correction mechanism.
3Manufacturing precision
If high-speed feeding of electrode sheets is maintained without correction, then productivity is high, but product quality deteriorates due to powder shedding and lithium precipitation caused by poor alignment
Solution Approach 1:
The visual recognition assembly operates continuously during the feeding process to constantly monitor electrode sheet position, and the deviation correction assembly makes continuous adjustments as sheets are fed. This continuous detection and correction action ensures that alignment precision is maintained throughout the entire high-speed feeding process, preventing quality defects while sustaining high productivity without interruption or slowdown.
Data Source
AI summary
An electrode sheet thermal-lamination adjustment mechanism includes a feeding assembly, a deviation correction assembly, and a visual recognition assembly. The feeding assembly includes a feeding platform. The incoming material strip includes a separator strip and a first electrode sheet disposed within the separator strip. The deviation correction assembly includes a first deviation correction member, a second deviation correction member, and a third deviation correction member. The second deviation correction member and the third deviation correction member are sequentially disposed along the X direction. The X direction is parallel with the conveying direction of the second electrode sheet. The Y direction is perpendicular to the X direction. The X direction and the Y direction are in the same plane. The visual recognition assembly faces the feeding platform. The visual recognition assembly is configured to perform visual recognition on the second electrode sheet on the feeding platform.