Multi-Region Reflector Design for Double-Sided Solar Cell Power Gain
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Solution Overview
Problem
Existing solar power generation systems for double-sided crystalline silicon solar cells are costly, cumbersome, and only effectively increase power generation on the rear side, failing to efficiently utilize sunlight for both sides.
Innovation Solution
A reflector with multiple reflection regions, each with different inclination angles, is designed to reflect sunlight onto both the light-receiving and rear sides of double-sided power generation cells, improving power generation efficiency while being simple in structure and easy to store and carry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional reflectors (concave mirrors, white paint, grids) are used to increase rear-side power generation, then power generation amount of the rear side is improved, but device complexity, cost, and volume increase
Solution Approach 1:
The reflector is divided into multiple reflection regions (first, second, third, and fourth reflection regions) with different inclination angles. Each region is segmented to reflect sunlight onto specific areas of the double-sided power generation cell, with the first and second regions having different inclination angles to optimize light reflection for both front and rear sides respectively.
Solution Approach 2:
Different reflection regions are designed with different local qualities (inclination angles) to perform different functions. The first reflection region has a smaller inclination angle optimized for reflecting light to the front side, while the second reflection region has a larger inclination angle optimized for the rear side, creating localized optimization across the reflector surface.
2Productivity
If traditional reflectors are used to increase rear-side power generation, then power generation amount of the rear side is improved, but ease of storage and carrying deteriorates
Solution Approach 1:
The reflector employs a flexible structure that can be dynamically folded and unfolded. The multiple reflection regions are connected in a way that allows the entire device to be collapsed into a compact form for storage and transport, then expanded to the full reflective surface area when deployed for power generation.
Solution Approach 2:
The reflector structure allows the first, second, third, and fourth reflection regions to be nested or folded together in a compact configuration for storage. When deployed, these regions unfold and extend outward to provide the full reflective surface area needed for optimal power generation performance.
3Productivity
If traditional reflectors are used to increase rear-side power generation, then power generation amount of the rear side is improved, but cost increases
Solution Approach 1:
The reflector design changes the inclination angle parameter across different reflection regions to optimize performance. By adjusting the inclination angles of the first, second, third, and fourth reflection regions, the system achieves enhanced power generation from both front and rear sides without requiring expensive materials or complex manufacturing processes.
Solution Approach 2:
The single reflector structure performs multiple functions by reflecting sunlight onto both the front side (light-receiving side) and rear side of the double-sided power generation cell simultaneously. This multi-functionality eliminates the need for separate reflectors for each side, reducing overall system cost and complexity.
4Productivity
If traditional reflectors are used, then rear-side power generation is improved, but adaptability to utilize sunlight for both sides deteriorates
Solution Approach 1:
The reflector is segmented into multiple reflection regions with different inclination angles, where the first reflection region reflects sunlight onto the front side and the second reflection region reflects sunlight onto the rear side. This segmentation enables the system to adaptively utilize sunlight for both sides of the double-sided power generation cell simultaneously.
Solution Approach 2:
The reflector structure is designed to serve multiple purposes: it reflects sunlight onto both the front light-receiving side and the rear side of the power generation cell. This universal design enhances the adaptability of the system to maximize power generation from both surfaces of the double-sided cell.
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 reflector increases power generation by 7% or more on the light-receiving side and 13% or more on the rear side, while reducing costs and improving portability and storage convenience.
Implementation Method 1
The plurality of reflection regions are capable of reflecting sunlight onto a light-receiving side and a rear side of the double-sided power generation cell
Data Source
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AI summary
Provided are a reflector and a solar power generation system. The reflector is configured to reflect sunlight onto the double-sided power generation cell (100) and mainly includes the reflector (200). The reflector (200) is provided with a plurality of reflection regions. Each of the plurality of reflection regions is provided with a reflection protrusion having a different inclination angle. The double-sided power generation cell (100) is obliquely disposed between two adjacent ones of the plurality of reflection regions. The reflection regions are capable of reflecting the sunlight onto a light-receiving side and a rear side of the double-sided power generation cell (100).