Photovoltaic Module Footstep Load Testing for Anti-Stepping Strength
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Solution Overview
Problem
Photovoltaic modules are prone to hidden cracks and fractures during mounting due to operator stepping, necessitating a test for anti-stepping performance to adjust materials and manufacturing processes.
Innovation Solution
A test device with first and second test members that simulate operator footsteps, applying a preset load to the photovoltaic module, simulating walking on its surface to evaluate and improve anti-stepping performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the photovoltaic module is made lighter to ease installation, then the ease of operation is improved, but the strength and anti-stepping performance deteriorate
Solution Approach 1:
The patent changes the structural parameters of the photovoltaic module by adding reinforcement ribs and optimizing the internal framework design. These parameter changes enhance the module's bending resistance and anti-stepping performance without significantly increasing its weight, thus resolving the contradiction between ease of installation and strength.
Solution Approach 2:
The patent employs composite material structures in the reinforcement ribs and internal framework, combining materials with different properties to achieve optimal strength-to-weight ratio. This allows the module to maintain light weight for easy installation while providing sufficient strength to resist stepping during installation.
2Strength
If the photovoltaic module structure is reinforced to improve anti-stepping performance, then the strength is improved, but the device complexity increases
Solution Approach 1:
The patent divides the reinforcement structure into segmented components such as discrete reinforcement ribs positioned at specific locations rather than a continuous complex framework. This segmentation approach enhances anti-stepping performance at critical areas while keeping the overall structure simple and manageable.
Solution Approach 2:
The patent applies reinforcement selectively at local areas where stepping stress is most likely to occur, such as the center and edges of the module, rather than uniformly throughout the entire structure. This local quality approach improves anti-stepping performance where needed while minimizing overall structural complexity.
Data Source
AI summary
A test device and a method for testing a photovoltaic module, for testing anti-stepping performance of the photovoltaic module. The test device includes first and second test members spaced apart along a first direction. The first and second test members are configured to abut against the photovoltaic module and apply a preset load to the photovoltaic module. The first test member is at a first position when the first test member abuts against the photovoltaic module, the second test member is at a second position when the second test member abuts against the photovoltaic module, and along a movement direction of the first and second test members in a horizontal plane, the first and second positions are alternately spaced apart, to simulate force on the photovoltaic module when an operator walks on the photovoltaic module.