Solar Panel Wire Cutting for Precise Layer Separation
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Solution Overview
Problem
Existing methods for disposing of discarded solar panels face challenges in accurately separating the layers, particularly due to the thin adhesive layers, which limits efficient recycling of materials like glass, solar cells, and backsheet layers.
Innovation Solution
A solar panel cutting unit with a frame, panel transporting mechanism, guide roller units, and wire cutting mechanisms that include first and second cutting wires, along with an image recognition unit to accurately locate and separate the thin layers by cutting along adhesion lines, allowing for precise separation and recycling of solar panel components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If existing physical separation methods are used to separate solar panel layers, then the process is simple, but the separation accuracy is poor due to thin adhesive layers
Solution Approach 1:
The patent divides the separation process into multiple stages using multiple wire cutting mechanisms positioned at different locations. Each wire cutting mechanism targets specific adhesive layers, enabling precise separation of individual thin layers that cannot be separated accurately by single-step physical methods.
Solution Approach 2:
The patent replaces traditional mechanical physical separation methods with wire cutting mechanisms that use thin wires to cut through adhesive layers. This substitution enables precise separation along adhesion lines where mechanical methods fail due to the thinness of adhesive layers.
2Manufacturing precision
If wire cutting mechanisms are used to separate thin layers, then separation accuracy improves, but the device complexity increases
Solution Approach 1:
The wire cutting mechanisms are designed to perform multiple functions: they can separate different types of thin layers (glass, solar cells, backsheet), accommodate various solar panel sizes, and adjust cutting positions. This multi-functionality reduces the need for multiple specialized devices, managing complexity while maintaining high precision.
Solution Approach 2:
The wire cutting mechanisms incorporate adjustable and movable components that can adapt to different solar panel configurations. The wires can be positioned and repositioned to match various adhesion line locations, enabling precise separation across different panel types without requiring completely different mechanisms for each case.
3Manufacturing precision
If multiple wire cutting mechanisms are used to separate multiple thin layers, then separation completeness improves, but the device complexity and operation difficulty increase
Solution Approach 1:
The patent combines multiple wire cutting mechanisms into a single integrated apparatus that processes the solar panel in one operation. The multiple wires work simultaneously or sequentially to separate all thin layers, eliminating the need for multiple separate processing steps and reducing operational complexity despite the increased number of cutting elements.
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
Enables accurate separation of multiple thin layers in solar panels, facilitating efficient recycling and handling of materials, with the ability to process solar panels of various sizes and adjust wire positions for precise cutting, and heating to reduce adhesive strength for easier glass separation.
Implementation Method 1
a adhesive layer provided between layers of a solar panel to connect the layers has a thin thickness
Implementation Method 2
heating to reduce adhesive strength for easier glass separation
Data Source
AI summary
A solar panel cutting unit includes a frame, a panel transporting mechanism at the frame to lower the solar panel in a vertical direction, first guide roller units below the panel transporting mechanism to guide and lower the solar panel, a first wire cutting mechanism including first support rollers and a first cutting wire connecting the first support rollers to each other and extending in the same direction as the adhesion lines such that the first wire cutting mechanism separates one of the thin layers from the solar panel, and a second wire cutting mechanism below the first wire cutting mechanism and including second support rollers and a second cutting wire connecting the second support rollers to each other and moving in parallel to the first cutting wire such that the second wire cutting mechanism separates another of the thin layers from the solar panel.