Solar Cell Module Disassembly Device Using Localized Pressure Scraping

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Solution Overview

Problem

The recycling of waste solar cell modules is challenging due to the difficulty in efficiently separating the junction box and encapsulating materials from the glass, which hinders the effective recycling of valuable metals and glass components.

Innovation Solution

A solar cell module disassembling device comprising a frame unit, a guide module, a scraper unit with a blade module, and a transfer unit, which disassembles the solar cell module by concentrating pressure on the boundary between the glass and encapsulating material, allowing for the separation of the junction box and encapsulating material from the glass.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If manual disassembly methods are used to separate junction box and encapsulating material from glass, then the process is simple to implement, but the separation efficiency is low and valuable metals cannot be effectively recovered

Engineering Contradiction:
Improvedisassembly efficiencyVSAvoiddisassembly device complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The disassembly device is divided into multiple functional modules including a heating module, a scraping module, and a transfer module. Each module performs a specific function in the disassembly process, enabling efficient separation of the junction box and encapsulating material from the glass while maintaining manageable device complexity through modular design.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The device replaces manual mechanical disassembly with an automated system that combines heating technology to soften the encapsulating material and mechanical scraping to separate components. This substitution of manual labor with automated mechanical and thermal processes significantly improves disassembly efficiency and recovery of valuable metals.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Ease of manufacture

If conventional disassembly methods are used, then the device structure is simple, but the separation of encapsulating material from glass is ineffective

Engineering Contradiction:
Improvedevice manufacturing simplicityVSAvoidseparation precision
Core Design Contradiction:
Ease of manufactureVSManufacturing precision

Solution Approach 1:

The device changes the physical parameters of the encapsulating material by applying heat to soften it, making it easier to separate from the glass. This parameter change (temperature increase) enables effective separation without requiring complex device structures, thus maintaining ease of manufacture while improving separation precision.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The heating module acts as an intermediary that modifies the encapsulating material's properties before the scraping module performs separation. This intermediate thermal treatment facilitates cleaner separation of encapsulating material from glass, improving manufacturing precision without significantly complicating the overall device structure.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Ease of operation

If pressure is applied uniformly across the solar panel, then the disassembly process is simple, but the separation at the boundary between glass and encapsulating material is ineffective

Engineering Contradiction:
Improvedisassembly operation simplicityVSAvoidboundary separation precision
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

The scraping module is designed to concentrate pressure locally at the boundary between the glass and encapsulating material rather than applying uniform pressure across the entire panel. This localized pressure application, combined with the softened material from heating, enables precise separation at the critical boundary interface while maintaining operational simplicity.

Inventive Principle:
Principle #3Local quality

Data Source

PatentUS11065859B2Device and method for disassembling solar cell module
Publication Date: 2021.07.20 KOREA INST OF ENERGY RES
  • US11065859B2 patent drawing
  • US11065859B2 patent drawing
  • US11065859B2 patent drawing

AI summary

A solar cell module disassembling device is disclosed. The device of present invention comprises a frame unit, wherein a laminated panel having a first panel and a second panel is mounted on the frame unit, and wherein the first and second panels are stacked and bonded; a guide module, being elongated in a forward and backward direction; a scraper unit, being movably coupled to the guide module, having a blade module, wherein the blade module moves in the forward and backward direction and presses the laminated panel and disassembles the laminated panel; and a transfer unit, being coupled to the scraper unit, delivering a driving force to the scraper unit, transferring the scraper unit.