PV Module Fixing Profiles Without Roof Membrane Penetration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for attaching photovoltaic modules to roofs face challenges such as leakage, cold bridges, aesthetical issues, high installation costs, and reduced durability due to the need for heavy frames and penetrations in waterproofing membranes, which also compromise water vapor permeability and are prone to theft and damage from thermal cycles.
Innovation Solution
The use of soft profiles with rigid inserts to attach photovoltaic modules to a roofing structure, allowing for secure and wind-resistant installation without penetrating the waterproofing membrane, while maintaining water vapor permeability and reducing module temperature, using a method that includes attaching photovoltaic modules to a rigid substrate which is then fastened to the roof using profiles with flaps for sealing and wind uplift distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If heavy frames are used to install rigid photovoltaic modules on the roof, then the modules can be securely mounted, but the installation cost increases and the roof structure must have high load bearing capacity
Solution Approach 1:
The patent uses a flexible waterproofing membrane with integrated mounting features instead of rigid heavy frames. The membrane itself provides the mounting surface through its structural integration, eliminating the need for separate heavy framing systems while maintaining secure module attachment.
Solution Approach 2:
The patent combines the waterproofing function and the mounting function into a single integrated membrane system. The membrane includes both waterproofing layers and integrated mounting elements (such as channels, clips, or adhesive layers) that secure the photovoltaic modules, merging two separate functions into one component.
2Ease of operation
If penetrations are made in the waterproofing membrane to install frames, then the modules can be mounted, but leakage and cold bridges occur
Solution Approach 1:
The patent integrates the mounting function directly into the waterproofing membrane, allowing modules to be secured without creating penetrations. The membrane includes built-in mounting channels, clips, or adhesive zones that attach modules while maintaining the continuous waterproofing layer.
Solution Approach 2:
The patent introduces an intermediary mounting mechanism (such as integrated clips, channels, or adhesive layers within the membrane) that enables module attachment without compromising the waterproofing barrier. This intermediary system transfers mounting loads away from the waterproofing membrane itself.
3Strength
If the waterproofing membrane is penetrated for module installation, then modules can be fixed, but water vapor permeability is blocked leading to condensation
Solution Approach 1:
The patent combines waterproofing and module mounting functions in an integrated membrane system that does not require penetrations. The membrane maintains its continuous structure with built-in mounting capabilities, preserving water vapor permeability while securing modules.
Solution Approach 2:
The patent uses an intermediary mounting system (integrated clips, channels, or adhesive zones) that attaches modules to the membrane without creating holes or barriers to water vapor transmission. The mounting mechanism is designed to be compatible with the membrane's permeability properties.
4Ease of operation
If photovoltaic modules are glued directly onto the waterproofing membrane, then installation is simplified, but water vapor permeability is blocked and condensation occurs
Solution Approach 1:
The patent merges the mounting function into the membrane structure itself, providing integrated channels, clips, or adhesive zones that secure modules without requiring direct gluing to the waterproofing surface. This maintains the membrane's permeability while achieving simple installation.
Solution Approach 2:
The patent introduces an intermediary mounting mechanism (such as integrated channels or clips within the membrane) that facilitates module attachment without blocking water vapor transmission. This intermediary system allows simple installation while preserving the membrane's breathability.
5Strength
If modules are installed close together with interlocking substrates, then wind up-lift resistance is improved, but the tilt angle is limited due to shading
Solution Approach 1:
The patent uses an intermediary membrane system with integrated mounting features that provides mechanical interlocking and wind resistance without requiring modules to be positioned closely together. The membrane structure distributes wind loads across the entire assembly, allowing greater spacing and tilt angles without compromising stability.
Data Source
Figure 1a~1b
Figure 1c
Figure 1d~1e
AI summary
The present invention relates to profiles for attaching rigid plates, especially photovoltaic modules, to a roof and to a method and system for attaching photovoltaic modules to a roof structure with the help of profiles.