PV Module Grounding Clamp for Variable Panel Thickness
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Solution Overview
Problem
The variability in solar panel module thicknesses due to different manufacturers poses challenges in effectively bonding and grounding these modules to mounting structures, leading to potential electrical issues and installation difficulties.
Innovation Solution
A clamping mechanism with ribs and serrations that securely attach and electrically bond photovoltaic modules to rails, using fasteners that accommodate varying module thicknesses and deform the rail surface for enhanced electrical contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional mounting systems are used with standardized rails and brackets, then installation is simplified, but electrical bonding and grounding become unreliable due to varying solar panel thicknesses
Solution Approach 1:
The clamp incorporates an adjustable fastening mechanism that can dynamically adapt to different panel thicknesses. The fastener system allows for variable clamping force and positioning, enabling the same mounting structure to reliably bond panels of varying thicknesses while maintaining consistent electrical contact pressure for dependable grounding.
Solution Approach 2:
The mounting system utilizes adjustable parameters including fastener penetration depth, clamping force magnitude, and contact surface pressure. By varying these parameters, the system achieves reliable electrical bonding across different panel thicknesses without requiring customized components for each thickness variation.
2Reliability
If customized mounting systems are created for each solar panel thickness, then electrical bonding reliability improves, but device complexity and installation time increase significantly
Solution Approach 1:
The clamp design integrates multiple functions into a single universal component: mechanical attachment, electrical bonding, and adaptation to varying thicknesses. This multi-functional approach eliminates the need for customized mounting systems for different panel thicknesses while maintaining reliable electrical bonding through its adjustable fastening mechanism.
Solution Approach 2:
The mounting system separates the adaptation function from the bonding function. The adjustable fastener mechanism handles thickness variation independently, while the clamp structure maintains consistent electrical contact. This segmentation allows a single standardized component to serve multiple purposes without increasing overall system complexity.
3Reliability
If additional bonding materials like copper wire or grounding straps are used, then electrical code compliance improves, but installation time and material requirements increase
Solution Approach 1:
The mounting system merges the mechanical attachment function with the electrical bonding function into a single integrated clamp assembly. The conductive clamp body itself serves as the grounding path, eliminating the need for separate copper wires or grounding straps. This consolidation maintains NEC compliance while significantly reducing installation steps and time.
Solution Approach 2:
The invention extracts the electrical bonding function from separate bonding materials and integrates it directly into the mounting clamp structure. The clamp's conductive body provides the grounding path inherently, removing the need for additional bonding materials and simplifying the installation process while ensuring electrical code compliance.
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
Ensures reliable electrical bonding and grounding of solar panels to rails, eliminating the need for additional grounding straps and reducing installation complexity.
Implementation Method 1
serrations that locally deform a portion of the rail in contact with the clamping mechanism to increase electrical bonding
Data Source
AI summary
A clamping mechanism includes a first fastener and a second fastener. The second fastener includes a head having a first rib with a first serration, a second rib with a second serration, a third rib with a third serration, and a fourth rib with a fourth serration. The first rib extends a first length and the first serration extends a second length that is less than the first length. The second rib extends a third length and the second serration extends a fourth length that is less than the third length. The third rib extends a fifth length and the third serration extends a sixth length that is less than the fifth length. The fourth rib extends a seventh length and the fourth serration extends an eighth length that is less than the seventh length. The second fastener includes a body coupled to the first fastener.