Curved Perovskite Solar Module Edge Reinforcement Against Wrinkles
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Solution Overview
Problem
Solar cell modules with curved shapes face issues of non-uniform temperature distribution leading to local stress and fine wrinkles in the film base material, particularly when exposed to sunlight, which can deteriorate performance.
Innovation Solution
A solar cell module design with a reinforcing portion at the edge of the film base material having higher bending rigidity, along with a tandem structure of strip-shaped first and second solar cell units, and a manufacturing method involving hot press sealing to suppress wrinkle formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the film base material is curved to match the curved shape of the solar cell module, then the module can be installed on curved surfaces, but fine wrinkles form due to local stress from temperature changes
Solution Approach 1:
The patent applies local quality by creating a reinforcing portion at the edge of the film base material with different properties (higher bending rigidity) than the remaining portion. This localized reinforcement specifically addresses the wrinkle formation issue at the edges while maintaining the overall flexibility and curved shape adaptability of the film base material.
Solution Approach 2:
The patent uses composite materials by combining the film base material with a reinforcing portion that has different mechanical properties. This composite structure allows the film to maintain its curved shape while resisting wrinkle formation through the enhanced bending rigidity of the reinforcing portion.
2Shape
If the film base material is made flexible to enable curving, then it can conform to curved surfaces, but it becomes susceptible to deformation and wrinkles under thermal stress
Solution Approach 1:
The patent applies local quality by creating a reinforcing portion at the edge of the film base material with different properties (higher bending rigidity) than the remaining portion. This localized reinforcement specifically addresses the wrinkle formation issue at the edges while maintaining the overall flexibility and curved shape adaptability of the film base material.
Solution Approach 2:
The patent uses composite materials by combining the film base material with a reinforcing portion that has different mechanical properties. This composite structure allows the film to maintain its curved shape while resisting wrinkle formation through the enhanced bending rigidity of the reinforcing portion.
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
Reduces fine wrinkles and maintains performance by suppressing deformation of the film base material, ensuring uniform temperature distribution and preventing hot spots in the silicon crystal elements.
Implementation Method 1
a first photovoltaic element disposed along a longitudinal direction of the film base material on one surface of the film base material
Data Source
AI summary
A curved plate-shaped solar cell module includes a front surface layer, a back surface layer, first and second solar cell units, and an sealing material, wherein the first solar cell unit includes a plurality of strip-shaped first cells, each first cell includes a flexible, strip-shaped film base material and a perovskite element, and is curved according to a curved shape of the solar cell module, and a reinforcing portion having a higher bending rigidity than other portions of the film base material is formed at an edge portion along the longitudinal direction of the film base material.