Lens, solar cell unit and joining method for a solar cell unit
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Solution Overview
Problem
Existing solar cell units face challenges in efficiently protecting semiconductor bodies from environmental degradation and ensuring accurate alignment and positioning of lenses for enhanced efficiency and reliability, particularly in high-concentration solar systems.
Innovation Solution
A lens design with a planar base and bulges on its side surface area, which allows for precise alignment and frictional connection with a semiconductor body using a polymer adhesive layer, enabling efficient and reliable assembly of solar cell units while maintaining compact size and imaging properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a lens is attached to a semiconductor body in existing solar cell units, then protection against environmental degradation is improved, but alignment precision and positioning accuracy deteriorate due to lack of precise positioning structures
Solution Approach 1:
The patent applies preliminary action by pre-forming positioning structures (protrusions and recesses) on the lens and semiconductor body before assembly. These structures are created during lens manufacturing, enabling automatic alignment and precise positioning when the lens is attached to the semiconductor body, thereby resolving the contradiction between protection reliability and alignment precision.
2Manufacturing precision
If a lens with complex positioning structures is used, then alignment precision is improved, but device complexity increases
Solution Approach 1:
The patent applies local quality by implementing positioning structures only at specific locations on the lens (protrusions on the base, recesses on the side surface) rather than throughout the entire lens structure. This localized approach achieves precise positioning while maintaining simplicity in the overall lens design, resolving the contradiction between positioning accuracy and device complexity.
3Productivity
If the lens size is reduced for compact solar cell units, then productivity is improved, but manufacturing precision deteriorates due to difficulty in achieving accurate alignment
Solution Approach 1:
The patent applies self-service through self-aligning positioning structures where protrusions on the lens base and recesses on the semiconductor body automatically guide and align components during assembly. This self-alignment mechanism ensures high positioning accuracy even in compact lens designs, enabling efficient automated production without sacrificing manufacturing precision.
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 proposed solution enhances the efficiency and reliability of solar cell units by ensuring accurate alignment and positioning of lenses, facilitating automated production and maintaining the compact size of the lens, thereby improving the overall performance and yield of solar cell units.
Implementation Method 1
the base of the lens is frictionally connected with the receiving surface of the semiconductor body by means of a polymer adhesive layer comprising a silicone compound
Data Source
AI summary
A lens, a solar cell unit including the lens and a joining method for the solar cell unit, wherein the lens has a main body with a substantially planar base, a receiving surface opposite the base, a side surface area connecting the base and the receiving surface and an optical axis extending perpendicular to the base and at least one bulge is arranged on the main body of the lens at a first height above the base on the side surface area.