Prefabricated PV Roofing Wiring Array for Safe Weather-Sealed Installation
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Solution Overview
Problem
Photovoltaic roofing systems are difficult to install due to the need for skilled electrical connections and protection from weather, particularly with large voltage differences that can lead to arcing and short circuits.
Innovation Solution
A photovoltaic roofing wiring array with parallel and series wiring runs, using connectors that can be easily coupled and affixed to photovoltaic elements, allowing for installation by unskilled installers and providing protection from the weather.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If electrical interconnections are made in photovoltaic roofing systems, then electrical energy can be transmitted between elements, but the risk of arcing and short circuits increases due to large voltage differences
Solution Approach 1:
The patent introduces an electrical isolation mechanism (insulating barriers, isolation layers, or isolation components) as an intermediary between electrical conductors at different voltage potentials. This intermediary prevents direct contact and potential arcing/short circuits while still allowing controlled electrical energy transmission through the isolation barrier, thus resolving the contradiction between power transmission and reliability.
2Reliability
If photovoltaic roofing elements are physically connected to provide weather protection, then weather sealing is achieved, but electrical installation becomes complex requiring skilled specialists
Solution Approach 1:
The patent combines physical connection and electrical connection functions into a single integrated mechanism. The roofing element's physical fastening structure simultaneously provides both weather sealing and electrical interconnection, eliminating the need for separate skilled electrical installation steps. This merging allows standard roofing installers to complete both functions without requiring specialized electrical expertise.
Solution Approach 2:
The patent implements self-aligning and self-connecting features where the roofing elements automatically position and connect electrically as they are physically installed. The system provides self-guiding mechanisms that ensure proper electrical contact without requiring skilled alignment or specialized installation techniques, thus improving ease of operation while maintaining reliable weather protection.
3Adaptability or versatility
If standard roofing elements are used with photovoltaic cells, then dual functionality (weather protection and power generation) is achieved, but installation difficulty increases
Solution Approach 1:
The patent designs the roofing element as a universal component that performs multiple functions: weather protection, structural support, and electrical conduction. By integrating these functions into a single standardized element with consistent connection mechanisms, the system reduces installation complexity despite the added versatility, as installers work with uniform components rather than separately assembling multiple specialized parts.
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
Facilitates easier and safer installation of photovoltaic roofing systems by allowing unskilled personnel to connect photovoltaic elements while protecting electrical interconnections from weather, accommodating various roof sizes and shapes, and ensuring flexibility in system configuration.
Implementation Method 1
components that convert light energy into electrical energy. Such 'photovoltaic cells' are often made from semiconductor-type materials
Data Source
AI summary
Photovoltaic wiring arrays and photovoltaic wiring systems suitable for use in rooftop photovoltaic power generation systems are provided. Accordingly, one aspect of the invention provides a photovoltaic roofing wiring array for use with a plurality of photovoltaic roofing elements, the photovoltaic roofing wiring system including: a positive parallel wiring run comprising a main line and one or more connection branches pendant from the main line, each connection branch being terminated in a positive connector; and a negative parallel wiring run comprising a main line and one or more connection branches pendant from the main line, each connection branch being terminated in a negative connector. In some embodiments of the invention, the photovoltaic roofing wiring arrays are substantially prefabricated.