Camouflaged Solar Module Structure for Angle-Dependent Cell Concealment
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Solution Overview
Problem
Existing solar modules have a visible photovoltaic cell layer that can be aesthetically disruptive, limiting their placement to areas where they are not visible from the outside, such as flat roofs.
Innovation Solution
A solar module design that incorporates a camouflaging system with multiple layers of translucent substrates and patterns of camouflaging elements, arranged with an offset to reduce the visibility of photovoltaic cells for a specific range of viewing angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a uniform optically translucent front sheet is used to allow sunlight to reach photovoltaic cells, then energy efficiency is improved, but visual appearance deteriorates as photovoltaic cells become fully visible and disruptive
Solution Approach 1:
The front sheet is segmented into multiple layers: a base translucent layer for optical transmission and overlay layers with camouflaging patterns (such as dot matrices, stripes, or architectural designs) that segment the view of photovoltaic cells. This segmentation allows sunlight to pass through while breaking up the visual continuity of the cells, resolving the contradiction between energy efficiency and aesthetic appearance.
Solution Approach 2:
Camouflaging pattern layers serve as intermediary elements between the translucent front sheet and the photovoltaic cells. These intermediate layers with controlled optical properties (transparency, opacity, pattern density) mediate the interaction between sunlight and cells while simultaneously modifying the visual appearance, allowing both energy efficiency and aesthetic goals to be achieved.
2Shape
If camouflaging elements are added to reduce visibility of photovoltaic cells, then visual appearance is improved, but device complexity increases due to multiple layers and patterns
Solution Approach 1:
Multiple functional requirements are merged into single components. For example, the front sheet simultaneously serves as a protective cover, a light transmission medium, and a camouflaging element through integrated patterns. This merging reduces the number of separate components needed, simplifying the overall structure while maintaining aesthetic improvements.
Solution Approach 2:
The camouflaging pattern layers are designed to perform multiple functions: they provide aesthetic camouflage, maintain structural integrity of the module, contribute to light management, and can even provide additional protection against environmental factors. This multi-functionality reduces the need for separate dedicated components, thereby reducing device complexity.
3Shape
If multiple layers with camouflaging patterns are implemented, then visibility reduction is improved, but manufacturing complexity increases
Solution Approach 1:
Camouflaging patterns are pre-formed on translucent sheets or foils before assembly into the final module. These pre-patterned components can be manufactured using standard printing, embossing, or lamination techniques, and then simply laminated or adhered to the module assembly. This preliminary preparation simplifies the final assembly process and enables standard manufacturing workflows to be used.
Solution Approach 2:
The optical parameters of the camouflaging layers (transparency, pattern density, color) are optimized to achieve effective visibility reduction at standard viewing angles while maintaining adequate light transmission. By carefully selecting and controlling these parameters, the camouflaging effect is achieved with minimal layer complexity, simplifying manufacturing while maintaining effectiveness.
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 design allows for the installation of solar modules on angled roofs and facades while maintaining high efficiency and reducing the visibility of photovoltaic cells from ground-level viewing angles, enhancing their aesthetic appeal and acceptance.
Implementation Method 1
A camouflaging is being arranged in front of the at least one photovoltaic cell for angle dependent reduction of the visibility of the at least one photovoltaic cell for a predefined range of viewing angles
Implementation Method 2
A first substrate layer of essentially translucent material being arranged between the first layer and the photovoltaic layer
Data Source
AI summary
The disclosure is directed to a solar module comprising at least one photovoltaic cell arranged in an essentially planar photovoltaic layer. The photovoltaic layer is being arranged between a front face and a back face of the solar module and a camouflaging for angle dependent reduction of the visibility of the at least one photovoltaic cell for a predefined range of viewing angles with respect to the front face.