Segmented Solar Module Bypass Layout for Partial Shading
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Solution Overview
Problem
Solar cell modules experience significant power reduction or failure due to partial shading, leading to potential damage and inefficient energy output, and existing bypass diode configurations require extensive material and area usage.
Innovation Solution
A solar cell module design with two module segments, each comprising subsegments connected in series via bypass elements, where bypass connectors are used to secure subsegments in parallel, reducing material expenditure and enhancing area performance density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If bypass diodes are arranged centrally in the solar cell module, then the number of bypass elements is reduced, but the component area requirement increases and area performance density decreases
Solution Approach 1:
The solar cell module is divided into multiple module segments (first module segment, second module segment), each with its own bypass elements. This segmentation allows bypass diodes to be distributed at the edges of individual segments rather than requiring central arrangement, reducing the component area requirement while maintaining adequate protection coverage.
2Area of moving object
If bypass diodes are arranged at module edges, then the area performance density increases, but the protection coverage against partial shading is reduced
Solution Approach 1:
The module is segmented into multiple sections, each equipped with bypass elements at their respective edges. This ensures that partial shading affecting any specific segment can be addressed by the locally positioned bypass diodes, maintaining comprehensive protection coverage while preserving high area performance density.
Solution Approach 2:
Each module segment is equipped with bypass elements specifically positioned at its edges, providing localized protection tailored to the shading risks of that particular segment. This local quality approach ensures optimal protection coverage for each segment while maintaining overall high area performance density.
3Reliability
If more bypass elements are added to increase protection coverage, then the reliability improves, but the material expenditure and device complexity increase
Solution Approach 1:
The solar cell module is divided into multiple module segments, with bypass elements strategically placed at the edges of each segment. This segmentation approach provides comprehensive protection coverage by addressing shading risks in each segment independently, while avoiding the need to add excessive bypass elements across the entire module, thus controlling device complexity.
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 minimizes material usage, reduces shading losses, and maintains efficient energy output by allowing flexible bypass element arrangement, increasing the area performance density and reliability of the solar module.
Implementation Method 1
the first pole of the first bypass element of the first module segment is electrically conductively connected to the first pole of the first subsegment of the first module segment and that the second pole of the second bypass element of the first module segment is electrically conductively connected to the second pole of the second subsegment of the first module segment
Data Source
AI summary
A solar cell module, having at least one first module segment, wherein the first module segment includes a first subsegment and at least one second subsegment, the first and the second subsegment each have at least one solar cell string and each solar cell string has a plurality of solar cells interconnected in series. The first module segment includes a first and an at least second bypass element and bypass connectors. These bypass elements are interconnected via the bypass connectors within the module segment. The shading properties, the electrical characteristics and the material expenditure in the production of the solar module are advantageously adapted via advantageous circuit and geometry arrangements of the elements.