Releasable Solar Roof Tiles for Protected Cable Access
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Solution Overview
Problem
Traditional solar panel installations face issues with electrical cables being exposed and prone to damage, posing safety hazards and complicating maintenance, while roof-integrated systems lack airflow and ease of cable replacement.
Innovation Solution
A solar roof tile system with releasable solar tiles and integrated junction boxes, allowing access to the roof cavity, and a supporting structure that includes battens and link channels for safe cable management and earthing, with color-coded flexible conduits and protective housings for junction boxes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If solar roof tiles are directly integrated into the roof structure with cables inside the roof cavity, then a seamless integrated appearance is provided, but cable damage and electrical hazards occur due to installer safety risks
Solution Approach 1:
A removable access tile is introduced as an intermediary element that allows safe access to cables within the roof cavity without requiring workers to cut through sarking or expose live cables during installation and maintenance operations
Solution Approach 2:
The roof tile system is segmented into fixed tiles and one removable access tile, allowing the majority of tiles to remain integrated for aesthetic purposes while providing a specific access point for safe cable management and maintenance
2Ease of manufacture
If electrical cables are laid on top of the roof sarking and over the battens, then installation is simplified, but cable damage occurs very easily causing connection problems or earthing issues
Solution Approach 1:
The access tile serves as a protective intermediary that allows cables to be routed through protected conduits within the tile structure itself, shielding them from damage during installation and maintenance while maintaining installation simplicity
3Strength
If solar roof tiles are permanently fixed into the roof structure, then structural integrity is maintained, but faulty cables or tiles cannot be easily replaced
Solution Approach 1:
The roof tile system is divided into permanently fixed tiles for structural integrity and one specifically designed removable access tile that can be easily taken out and replaced to access and replace cables or solar components without removing adjacent tiles
Solution Approach 2:
The access tile transitions from a static permanent fixture to a dynamic removable component, allowing the system to adapt between maintaining structural integrity during normal operation and enabling easy access for maintenance when needed
4Ease of operation
If workers cut a hole in the sarking from inside the roof space to access cables, then cable access is gained, but serious injury or fire risk occurs from cutting through live electrical cables
Solution Approach 1:
The access tile is pre-configured with cable access pathways and protective conduits during manufacturing, eliminating the need for workers to perform dangerous cutting operations inside the roof space and providing safe cable access from the beginning
Data Source
AI summary
Described herein is a solar roof tile system (102) for a building. The system (102) includes a supporting structure (108) adapted to be mounted to the building and having one or more supporting formations (110, 112) for supportively engaging one or more solar roof tiles (104). The solar roof tiles (104) are adapted to be releasably engaged with the supporting structure (108) such that the solar roof tiles (104) can be independently released from the roof (100) without removing adjacent solar or non-solar roof tiles (106). Each of the solar roof tiles (104) include one or more electrical junction boxes (152, 154) disposed on an underside surface (150) for receiving electrical cables to form an electric circuit with others of the one or more solar roof tiles (104) and an inverter. The supporting formations (110) are fixedly mounted to the building and adapted to releasably support the one or more solar roof tiles (104) in respective operative positions, and wherein each supporting formation is electrically connected to an earthing circuit.