Mounting structures for photovoltaic cells
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Solution Overview
Problem
Existing solar panel mounting systems for flexible PV modules are complex, costly, and inefficient, requiring multiple roof penetrations, extensive grounding, and are not adaptable to non-planar roof topographies, leading to issues with sagging, water accumulation, and operational temperature increases.
Innovation Solution
A mounting system that bends flexible photovoltaic modules into a slight arch with a large radius around one axis, using clamping devices, adhesives, or hook and loop fasteners, allowing for standardized installation on various roofing surfaces with minimal penetrations and improved air circulation for cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If flexible PV modules are mounted directly to a rooftop using adhesives, then installation is simplified, but the modules cannot be easily removed for roof repairs or replacement
Solution Approach 1:
The mounting system divides the attachment function into two separate components: a mounting structure attached to the roof and a flexible PV module that can be detached and reattached. This segmentation allows the module to be removed for roof repairs and reinstalled afterward, resolving the contradiction between installation simplicity and repair ease.
Solution Approach 2:
The mounting system transitions from a static permanent adhesive bond to a dynamic removable connection. The mounting structure with retention features allows the module to be securely held during operation but easily removed when needed, providing adaptability between installed and removed states for roof maintenance.
2Adaptability or versatility
If mounting structures are designed to accommodate various roof topographies, then adaptability is improved, but device complexity increases
Solution Approach 1:
The mounting structure incorporates localized adaptive features at specific contact points rather than requiring the entire structure to be complex. The retention features and support elements are designed to accommodate variations in roof surface locally, maintaining overall structural simplicity while achieving broad adaptability.
Solution Approach 2:
The mounting structure is designed with universal retention features that can accommodate different roof types (flat, pitched, corrugated, tiled) using the same basic structure. This multi-functionality allows a single mounting design to serve multiple roof topographies without increasing complexity, resolving the contradiction between adaptability and simplicity.
3Ease of operation
If flexible PV modules are mounted in a planar orientation, then installation is straightforward, but sagging occurs on non-planar roofs and water accumulates
Solution Approach 1:
The mounting structure is designed to support the flexible PV module in a curved or arched configuration rather than a flat planar orientation. This curvature follows the natural drape of the flexible module and creates a self-draining profile that prevents water accumulation while maintaining stability on non-planar roof surfaces.
Solution Approach 2:
The mounting system transitions from supporting the module in a single-plane (2D) configuration to a three-dimensional curved configuration. This dimensional change allows the module to conform to roof topography variations while maintaining proper drainage angles and preventing sagging, resolving the contradiction between installation simplicity and reliability.
Data Source
AI summary
Mounting systems for PV modules and assemblies of modules, including apparatus and methods of use. The disclosed systems generally involve mounting a flexible photovoltaic module in a slight arch, bending it with a large radius around one axis of the module.