Magnetic Roller Levitation for Solar Cell Frame Separation
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Solution Overview
Problem
The manual fabrication of PV panels is a time-consuming and error-prone process, making it costly to mass-produce reliable solar panels, and existing handling tools are inadequate for safely separating fragile solar cells from processing frames after the photolithography process.
Innovation Solution
A system comprising a rinsing module and a separation module, where the solar cells are secured by a resist film on a processing frame, allowing for gentle handling using conveyors and magnetic rollers to separate the frame from the solar cells after delamination of the resist film, enabling efficient rinsing and reuse of the frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If solar cells are handled manually during fabrication, then flexibility in handling is maintained, but the process becomes time-consuming and error-prone, increasing cost and reducing productivity
Solution Approach 1:
A processing frame serves as an intermediary carrier that holds multiple solar cells during fabrication. The frame allows automated conveyor systems to transport groups of cells simultaneously through photolithography processes, dramatically increasing throughput while the cells remain protected and easily manipulable on the frame throughout the process
2Productivity
If solar cells are secured to the processing frame during photolithography, then automated handling and throughput are improved, but separation becomes difficult due to the fragile nature of the cells
Solution Approach 1:
A thin resist film is applied over the solar cells on the processing frame. This flexible film layer secures the cells during automated handling and photolithography processes, then can be easily delaminated and removed in a rinsing step, allowing clean separation of the fragile cells from the frame without direct mechanical contact or damage
Solution Approach 2:
The resist film acts as a temporary intermediary bonding layer between the solar cells and the processing frame. It provides secure attachment during high-throughput automated processing, then serves as a release mechanism during the rinsing step where the film delaminates, enabling easy frame removal and cell separation
3Ease of repair
If the processing frame is reused after photolithography, then cost is reduced, but thorough cleaning of delaminated resist film is required to maintain quality
Solution Approach 1:
The processing frame undergoes continuous circulation through an automated rinsing system that thoroughly removes delaminated resist film residues. Multiple rinsing zones with spray nozzles and conveyor mechanisms ensure complete cleaning in a continuous process, preparing the frame for immediate reuse without manual intervention or quality compromise
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This system streamlines the solar cell processing by reducing handling-induced damage and enabling the reuse of processing frames, thereby increasing throughput and reducing costs in solar panel manufacturing.
Implementation Method 1
magnetic rollers that gradually lift and divert the processing frame onto a separate roller track. Because the solar cells are not ferromagnetic, the solar cells remain on a lower roller track.
Data Source
AI summary
A system for processing solar cells is disclosed which includes a separation module for separating a processing frame from solar cells that are fed along a conveyance line. The processing frame can be separated without requiring manual lifting of the processing frame by feeding the processing frame and solar cells into a magnetic roller system. The magnetic roller system can gradually lift the processing frame away from the solar cells and divert the processing frame to a separate roller system. The solar cells can remain on the main conveyance line for further processing.