Solar Cell Module Anti-Reflection Portion Light Redirection
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Solution Overview
Problem
Current solar cell modules face inefficiencies in light absorption and high manufacturing costs due to the limited surface area for light incidence and the extensive use of materials for anti-reflection coatings across the entire transparent member.
Innovation Solution
Incorporating an anti-reflection portion on the inner surface of the transparent member, specifically in the non-electricity generating regions, to redirect light to the electricity generating regions, and using a partial oxide of ethylene vinyl acetate (EVA) or other materials for protective layers to reduce material usage and enhance efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If anti-reflection coating is applied to the entire transparent member, then light absorption is improved, but manufacturing cost increases due to extensive material usage
Solution Approach 1:
The patent applies anti-reflection portions only to specific regions (non-electricity generating regions) of the transparent member rather than the entire surface. This localized application reduces material consumption while maintaining effective light management, as the anti-reflection function is concentrated where it most benefits light redirection to electricity generating regions.
Solution Approach 2:
The transparent member is divided into different functional regions: electricity generating regions and non-electricity generating regions. The anti-reflection coating is selectively applied to the non-electricity generating regions, segmenting the coating application to optimize both performance and material efficiency.
2Quantity of substance
If the surface area for light incidence is limited, then manufacturing cost is reduced, but electricity generation efficiency decreases
Solution Approach 1:
The anti-reflection portions act as intermediary structures that redirect light from non-electricity generating regions toward electricity generating regions. This intermediary light redirection mechanism allows the system to maintain high electricity generation efficiency without requiring the entire transparent member surface to be dedicated to light absorption.
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
This configuration increases light incidence on solar cells by 4% to 5%, improving electricity generation efficiency while reducing manufacturing costs by minimizing material usage for anti-reflection coatings.
Implementation Method 1
a first anti-reflection portion on an inner surface of the transparent member, the inner surface being a surface facing the plurality of solar cells
Implementation Method 2
When light is incident on the solar cell, electrons inside the semiconductors become free electrons (hereinafter referred to as "electrons") by the photoelectric effect
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
A solar cell module includes a plurality of solar cells, a protective layer positioned on the plurality of solar cells, and a transparent member positioned on the protective layer, the transparent member protecting the plurality of solar cells, the transparent member including a first anti-reflection portion patterned on at least one of an outer surface and partially positioned in an inner surface of the transparent member, the inner surface being a surface facing the plurality of solar cells.