See-Through Solar Module Layout for Power and Series Voltage Balance
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Solution Overview
Problem
Conventional see-through solar modules face challenges in achieving both transparency and sufficient output power due to high series voltage issues caused by large numbers of rectangular cells in series, necessitating either high series voltage or reduced cell count, which limits practical application.
Innovation Solution
A novel solar cell layout design with solar cells cut to a specific ratio and connected with a predetermined spacing, using bus strips for series/parallel connections and incorporating bypass diodes to manage voltage and current, ensuring visual transparency and enhanced power output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the total number of series groups of rectangular cells is increased to meet output power requirements, then the series voltage becomes excessively high, but reducing the number of series groups compromises the output power
Solution Approach 1:
The patent divides the solar module into multiple parallel battery strings, each containing a limited number of series-connected cells (no more than 100 cells per string). This segmentation ensures that the series voltage in each string remains manageable while the overall module power is achieved through parallel combination of multiple strings, resolving the contradiction between output power and series voltage control
Solution Approach 2:
The patent transitions from a single-series configuration to a multi-dimensional arrangement combining series and parallel connections. By organizing cells into multiple parallel strings with series connections within each string, the system achieves both adequate power output and controlled voltage levels through dimensional expansion of the electrical architecture
2Illumination intensity
If narrow-width rectangular cells are used to maintain transparency, then the visual appearance is improved, but the total number of cells that can be accommodated is reduced
Solution Approach 1:
The patent specifies precise dimensional parameters for the solar cells, with a width-to-length ratio between 0.2-0.5 and specific width values of 5-15mm. This parameter optimization allows narrow-width cells to maintain transparency while accommodating sufficient numbers of cells through optimized layout arrangements, resolving the contradiction between transparency and cell quantity
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 maintains visual transparency while increasing output power by optimizing cell connections and incorporating bypass diodes for safety, addressing the limitations of conventional modules.
Implementation Method 1
a plurality of solar cells, wherein the plurality of solar cells are welded and connected in series
Implementation Method 2
the solar module further comprises at least one bypass diode electrically connected between any two of the plurality of bus strips
Data Source
AI summary
A solar module includes a plurality of solar cells and a carrier plate. The carrier plate includes a front cover and a back cover. The plurality of solar cells are welded and connected in series to define a plurality of solar battery string groups. The plurality of solar cells are connected in series at a predetermined spacing distance therebetween in a first direction to form each of the plurality of solar battery string groups. A width of each of the plurality of solar cells in the first direction is a first length, a length of each of the plurality of solar cells in a second direction is a second length, and a ratio of the second length to the first length is greater than 10. The plurality of solar battery string groups are pressed between the front cover and the back cover via a plurality of bus strips.