Back Contact Solar Cell Panel with Opaque Resin Blocking
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Solution Overview
Problem
The challenge in manufacturing solar cell panels is to modularize back contact solar cells effectively, ensuring easy assembly and aesthetics while maintaining electrical connectivity and protection from environmental factors.
Innovation Solution
A solar cell panel design featuring a front substrate, back sheet, and encapsulant with conductive lines connecting solar cells, where a blocking portion made of opaque ceramic resin is used to conceal the conductive lines, improving the panel's appearance and facilitating easy replacement of faulty cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If conductive lines are exposed between solar cells, then electrical connectivity is achieved, but aesthetic appearance deteriorates
Solution Approach 1:
A blocking portion made of opaque ceramic resin is introduced as an intermediary element between the conductive lines and the viewer. This blocking portion selectively obscures the conductive lines from visual detection while permitting electrical current to pass through, thereby resolving the conflict between aesthetic appearance and electrical connectivity.
2Ease of manufacture
If solar cells are modularized for easy assembly, then ease of manufacture is improved, but structural complexity increases
Solution Approach 1:
The blocking portion is integrated directly into the front substrate structure, merging the aesthetic function with the structural support function. This integration eliminates the need for separate blocking components, thereby reducing overall structural complexity while maintaining modularization benefits for ease of manufacture.
3Shape
If blocking portion is added to hide conductive lines, then aesthetic appearance is improved, but device complexity increases
Solution Approach 1:
The blocking portion is designed to serve multiple functions simultaneously: it acts as an aesthetic element to hide conductive lines, provides structural support as part of the front substrate, and maintains electrical insulation properties. This multi-functionality reduces the need for additional dedicated components, thereby limiting the increase in device complexity.
Data Source
AI summary
A solar cell panel using a back contact solar cell is disclosed. The solar cell panel includes a front substrate, a back sheet positioned opposite the front substrate, a plurality of solar cells positioned between the front substrate and the back sheet and connected to one another by a plurality of conductive lines electrically connecting two adjacent solar cells, an encapsulant covering the plurality of solar cells, and at least one blocking portion blocking the plurality of conductive lines that is otherwise visible between the solar cells from being visually seen. The at least one blocking portion is positioned between a back surface of the front substrate and the encapsulant.