Solar Shingle Offset Side-Lap Layout for Roof Alignment
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Solution Overview
Problem
Existing roofing systems with solar shingles face challenges in integrating solar cells efficiently with traditional roofing shingles, leading to alignment and coverage issues that affect installation and performance.
Innovation Solution
A solar shingle design featuring offset side laps and flap portions, allowing for precise alignment and coverage of solar cells, with optional electronics modules, and a roofing system that includes step flaps for seamless integration with roofing shingles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If solar shingles are installed above a roof deck alongside traditional roofing shingles, then solar energy generation is achieved, but alignment and coverage issues arise between solar cells and traditional shingles
Solution Approach 1:
The solar shingle is divided into distinct functional portions: a reveal portion containing solar cells and a head lap portion for overlapping with adjacent shingles. This segmentation allows each portion to be optimized independently - the reveal portion for solar cell placement and the head lap portion for precise alignment with traditional shingles, thereby resolving the alignment and coverage issues while maintaining solar energy generation capability
Solution Approach 2:
Different portions of the solar shingle are designed with different properties: the reveal portion is optimized for solar cell integration and electrical performance, while the head lap portion is designed with specific dimensional characteristics to ensure proper alignment and coverage with traditional roofing shingles. This local differentiation allows simultaneous achievement of solar energy generation and precise alignment
2Reliability
If solar cells are arranged in rows on the shingle, then electrical performance is improved, but alignment with traditional shingles becomes more complex
Solution Approach 1:
The solar shingle employs asymmetric design where the reveal portion containing the solar cell rows is positioned and dimensioned differently from the head lap portion. The offset between the solar cell rows and the edges of the shingle is specifically designed to accommodate the asymmetric pattern of traditional roofing shingles, allowing electrical performance optimization through proper solar cell arrangement while simplifying alignment with the traditional shingle pattern
3Productivity
If the shingle design includes offset side laps and flap portions, then installation efficiency is enhanced, but manufacturing complexity increases
Solution Approach 1:
The solar shingle is manufactured with pre-formed head lap portions and offset side laps that include integrated flap portions. These features are created during the manufacturing process rather than requiring field modification, allowing installers to simply overlap the pre-formed portions for precise alignment. This preliminary formation of alignment features during manufacturing enhances installation efficiency while the automated manufacturing process keeps production complexity manageable
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
Enhances installation efficiency and performance by aligning solar cells with traditional shingles, ensuring optimal exposure and coverage, while allowing for flexible integration with various roof types.
Implementation Method 1
the reveal portion includes a plurality of solar cells
Data Source
AI summary
A roofing system, includes: a roof deck; a first roofing shingle installed on the roof deck, where the first roofing shingle comprises a reveal portion and a head lap portion; a first step flap installed on the roof deck; and a first solar shingle installed on the roof deck, where the first solar shingle includes: a reveal portion, where the reveal portion includes a plurality of solar cells, a first side lap; a first side flap, and a second side flap, where the reveal portion of the first roofing shingle covers the first side flap of the first solar shingle, where a first portion of the first step flap covers the second side flap of the first solar shingle, where a second portion of the first step flap is under the first side lap of the first solar shingle.