BIPV Roofing Assembly for Seamless Solar Integration
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Solution Overview
Problem
The adoption of solar technology in residential settings is limited by aesthetic concerns and the mismatch between the lifespan of solar systems and existing roofs, particularly composition shingle roofs, which requires homeowners to choose between upgrading the roof or the solar system, and existing systems are visually distinct and costly.
Innovation Solution
The development of building-integrated photovoltaic (BIPV) systems that seamlessly integrate with existing roofs, such as composition shingle roofs, by using modular and aesthetically blended photovoltaic modules that can be installed over existing surfaces, eliminating the need for a new roof and reducing visual contrast, and offering a cost-effective installation process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If solar modules are installed as separate arrays on existing roofs, then solar energy generation is achieved, but aesthetic appearance deteriorates due to visual contrast and height differences
Solution Approach 1:
The patent merges the solar module function with the roofing material function by integrating photovoltaic cells directly into the shingle structure. The solar shingles are installed as part of the roofing system itself, eliminating the visual contrast between separate solar arrays and traditional roofs. The modules are designed to match the appearance of conventional shingles while maintaining solar energy generation capabilities.
Solution Approach 2:
The solar shingles serve multiple functions simultaneously: they provide weather protection as roofing material, generate solar energy through integrated photovoltaic cells, and maintain aesthetic appearance by matching traditional shingle designs. This multi-functionality resolves the contradiction by making the solar system indistinguishable from conventional roofing while preserving both protective and energy-generating capabilities.
2Duration of action of stationary object
If a new roof is installed to match the solar system lifespan, then longevity compatibility is improved, but installation cost increases
Solution Approach 1:
The solar shingles replace traditional roofing material with an integrated solar-roofing hybrid that serves both protective and energy-generating functions for the full 25-year lifespan. This eliminates the need for separate roof and solar system installations, avoiding the cost of installing a new roof solely to match solar system longevity. The single integrated system provides both roofing and solar functionality simultaneously.
Solution Approach 2:
By combining the roofing function and solar energy generation into a single integrated system, the patent eliminates the need for separate roof replacement and solar installation projects. The solar shingles are installed as the primary roofing material, consolidating what would traditionally be two separate expensive installations into one cost-effective solution that addresses both longevity compatibility and installation cost concerns.
3Use of energy by moving object
If traditional solar modules are mounted on existing roofs, then solar energy generation is achieved, but visual distinctness worsens due to height and material differences
Solution Approach 1:
The solar shingles are designed with color and texture characteristics that match traditional roofing materials. The photovoltaic cells are integrated in a way that maintains the visual appearance of conventional shingles from street level. This color and appearance matching eliminates the visual distinctness problem while preserving solar energy generation capabilities.
Solution Approach 2:
The patent transitions from three-dimensional mounted solar arrays that create height differences to a two-dimensional integrated surface that lies flush with the roof plane. The solar cells are incorporated within the shingle structure itself, eliminating the vertical dimension that creates visual distinctness. This dimensional change allows solar energy generation without the visual prominence of traditional mounted arrays.
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
The BIPV systems provide a visually cohesive and cost-effective solution for solar energy integration, extending the lifespan of the solar system to match or exceed the roof's lifespan, reducing installation costs, and enhancing the aesthetic appeal by blending with the existing roof structure.
Implementation Method 1
Building integrated photovoltaic (BIPV) systems that seamlessly integrate with existing roofs
Data Source
AI summary
Building integrated photovoltaic (BIPV) systems provide for solar panel arrays that can be aesthetically pleasing and appear seamless to an observer. BIPV systems can be incorporated as part of roof surfaces as built into the structure of the roof, flush or forming a substantively uniform plane with roof panels or other panels mimicking a solar panel appearance. Pans supporting BIPV solar panels can be coupled by standing seams, in both lateral and longitudinal directions, to other photovoltaic-supporting pans or pans supporting non-photovoltaic structures, having both functional and aesthetic advantages. In some configurations, the appearance of BIPV systems can be particularly aesthetically pleasing and generally seamless to an observer.