Photovoltaic Module Frame with De-Framing Wire Separation

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Solution Overview

Problem

Existing methods for recycling photovoltaic modules are energy-intensive and environmentally unfriendly, and often damage integrated connection elements when separating the module from its frame.

Innovation Solution

A photovoltaic device design featuring a frame with grooves and de-framing wires that allow for the module to be easily separated without damaging connection elements, using a stripping wire to cut the sealing product between the frame and module.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If known recycling methods (heat treatment, high-pressure water jet) are used to separate the photovoltaic module from its frame, then the separation can be achieved, but the connection elements are damaged

Engineering Contradiction:

Improveease of separationVSAvoidintegrity of connection elements

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The invention introduces a de-framing wire that segments the separation process into two distinct stages: first cutting the sealing product to detach the module from the frame, then allowing removal of the frame without affecting connection elements. This segmentation resolves the contradiction by separating the cutting function from the removal function.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The de-framing wire acts as an intermediary tool between the sealing product and the connection elements. It enables the cutting of the sealing product while physically excluding damage to the connection elements, thus mediating between the need for separation and the need to preserve component integrity.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of manufacture

If energy-intensive methods are used for recycling photovoltaic modules, then complete separation can be achieved, but environmental friendliness deteriorates

Engineering Contradiction:

Improvecompleteness of separationVSAvoidenvironmental impact

Core Design Contradiction:

Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The invention replaces energy-intensive thermal and hydraulic systems with a simple mechanical wire-cutting mechanism. The de-framing wire mechanically cuts the sealing product without requiring heat treatment or high-pressure water jets, thus achieving complete separation while reducing environmental harm.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Strength

If the photovoltaic module is tightly sealed to the frame for structural stability, then structural strength is improved, but ease of separation deteriorates

Engineering Contradiction:

Improvestructural stabilityVSAvoidease of separation

Core Design Contradiction:

StrengthVSEase of operation

Solution Approach 1:

The invention extracts the de-framing wire from the final product structure, placing it only in the groove during manufacturing. After the sealing product cures and provides structural stability, the wire is removed, leaving the sealed structure intact but separable when needed through re-insertion of the wire.

Inventive Principle:

Principle #2Taking out (Extraction)

Data Source

PatentEP4564664A1Photovoltaic device

Publication Date: 2025.06.04 COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES

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AI summary

Photovoltaic device (100), comprising: - at least one photovoltaic module (M), comprising a front face (41) and a rear face (42) between which is arranged a photovoltaic cell encapsulant, and - a frame (30) surrounding the photovoltaic module (M), the frame (30) comprising a groove (50) for receiving an edge (40) of the photovoltaic module (M), - one or more de-framing wires (60) arranged in the groove (50), extending at least partly longitudinally to the edge (40) of the photovoltaic module (M).