Solar Panel Recycling With Adaptive Cutting Depth Control

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Solution Overview

Problem

Existing methods for recycling solar panels are inefficient and lack automation due to the diverse specifications of solar panels, making it difficult to remove the base layer and solar cell unit without damaging the cover layer.

Innovation Solution

A solar panel recycling system that includes a capturing device, measuring equipment, and removal equipment, utilizing infrared and ultraviolet light to measure dimensions, and a control unit to execute precise physical removal of the base layer and solar cell unit, with adaptive parameters based on historical data.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If conventional chemical or thermal decomposition methods are used to remove the base layer and solar cell unit, then the removal process can be performed, but the process becomes complex and difficult to automate due to diverse solar panel specifications

Engineering Contradiction:
Improveremoval processVSAvoidrecycling system
Core Design Contradiction:
Ease of manufactureVSDevice complexity

Solution Approach 1:

The patent replaces chemical and thermal decomposition methods with a mechanical cutting system. A cutting device with a cutting blade physically cuts through the base layer and solar cell unit to separate them from the cover layer, eliminating the need for complex chemical or thermal processes while maintaining effectiveness across diverse solar panel specifications

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

Solution Approach 2:

The cutting device is designed as a universal solution that can handle multiple solar panel specifications through programmable cutting paths and adjustable parameters. The system stores cutting parameters for different solar panel types and automatically selects appropriate parameters, making the same mechanical device effective across various panel designs without requiring multiple specialized systems

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Productivity

If physical removal by milling or grinding is used, then the base layer and solar cell unit can be removed, but the process becomes time-consuming and inefficient

Engineering Contradiction:
Improverecycling efficiencyVSAvoidremoval time
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The patent replaces time-consuming milling and grinding operations with a direct cutting method. The cutting blade efficiently slices through the base layer and solar cell unit in a single pass, dramatically reducing removal time compared to gradual material removal by milling or grinding, thereby significantly improving recycling productivity

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

Solution Approach 2:

The system performs preliminary identification and measurement of the solar panel dimensions and structure before the cutting operation. By capturing images and measuring the panel in advance, the system pre-determines the optimal cutting path and parameters, enabling the cutting device to execute the removal operation quickly and efficiently without delays during the actual cutting process

Inventive Principle:
Principle #10Preliminary action

3Reliability

If automated removal is implemented without adaptive parameters, then the process can be standardized, but the cover layer may be damaged due to inability to adapt to different solar panel specifications

Engineering Contradiction:
Improvecover layer integrityVSAvoidspecification adaptation
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The system incorporates feedback through image capture and measurement devices that scan the solar panel before cutting. The captured data about panel dimensions, structure, and positioning is fed back to the control unit, which adjusts the cutting parameters and path accordingly. This feedback loop ensures the cutting device adapts to each specific panel while maintaining consistent protection of the cover layer

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The cutting device is designed with dynamic capabilities, including adjustable cutting depth, variable cutting speed, and programmable cutting paths. These dynamic parameters allow the system to adapt to different solar panel specifications while maintaining reliable cover layer protection. The cutting blade can dynamically adjust its position and depth based on real-time measurements, ensuring precise separation without damaging the cover layer regardless of panel type

Inventive Principle:
Principle #15Dynamics

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 efficient and automated recycling of solar panels by ensuring the cover layer's integrity and optimizing the recovery of base and cell materials, enhancing recycling efficiency and material purity.

Implementation Method 1

the first gauge (51) is configured to be controlled by the control unit (7) to emit a first infrared light with a first power upwardly to the solar panel (3)... the first gauge (51) is configured to analyze the first infrared light reflected by the solar panel (3) to measure a height (D3)

Methodology Applied
Scientific EffectInfrared light reflection: Reflection

Implementation Method 2

the second gauge (52) is configured to be controlled by the control unit (7) to emit an ultraviolet light with a second power upwardly to the solar panel (3)... the second gauge (52) is configured to analyze the ultraviolet light reflected by the solar panel (3) to measure a height (D1)

Methodology Applied
Scientific EffectUltraviolet light reflection: Reflection

Data Source

PatentEP4462470B1Method for recycling solar panel and solar panel recycling system for implementing the same
Publication Date: 2025.10.15 TSGC TECH INC
  • EP4462470B1 patent drawingFigure 1
  • EP4462470B1 patent drawingFigure 2
  • EP4462470B1 patent drawingFigure 3

AI summary

A method for recycling a solar panel (3) that is to be implemented by a solar panel recycling system (200) is provided. The solar panel recycling system (200) includes a measuring equipment (5), a removal equipment (6), and a control unit (7). The solar panel (3) includes a cover layer (31) and a base layer (33). The method includes steps of: the measuring equipment (5) measuring a first height (D1) of the cover layer (31) and a second height (D3) of the base layer (33); the control unit (7) obtaining a first parameter based on the second height (D3), obtaining a second parameter based on the first height (D1); the control unit (7) controlling the removal equipment (6), according to the first parameter, to physically remove a portion of the solar panel (3); and the control unit (7) controlling the removal equipment (6), according to the second parameter, to physically remove a portion of the main body remainder (301).