Machine-Vision Solar Cell Mounting With Automated Adhesive Bonding
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Solution Overview
Problem
Conventional manufacturing of III-V compound semiconductor multijunction solar cells for space applications is labor-intensive and inefficient, leading to high costs and suboptimal performance due to manual assembly processes.
Innovation Solution
An automated process using machine vision and automated alignment fixtures for dispensing adhesive and positioning solar cell assemblies on a face sheet, combined with a supply reel or tray for forming solar array panels, and methods for automated alignment and bonding using pressure-sensitive adhesive (PSA) patches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual assembly processes are used for III-V compound semiconductor multijunction solar cells, then manufacturing flexibility is maintained, but labor intensity increases and manufacturing efficiency decreases
Solution Approach 1:
The patent replaces manual mechanical assembly operations with automated robotic systems that perform cell mounting, interconnection, and panel assembly tasks. This substitution eliminates labor-intensive processes while maintaining manufacturing flexibility through programmable robot control.
Solution Approach 2:
The automated assembly system performs self-alignment and self-positioning of solar cells and components through machine vision and feedback mechanisms, eliminating the need for manual positioning while maintaining precision in the assembly process.
2Manufacturing precision
If manual assembly processes are used, then assembly complexity can be managed manually, but labor costs increase and manufacturing precision decreases
Solution Approach 1:
Manual positioning and alignment operations are replaced with automated machine vision systems and robotic positioning mechanisms that provide precise control over component placement, achieving higher manufacturing precision through computational control rather than manual skill.
Solution Approach 2:
The automated assembly system incorporates machine vision and feedback mechanisms that continuously monitor and adjust component positioning in real-time, ensuring high precision assembly while managing system complexity through closed-loop control.
3Productivity
If conventional manual assembly is used for solar cell panels, then process simplicity is maintained, but production time increases and productivity decreases
Solution Approach 1:
The automated assembly system operates continuously without interruption, performing mounting, interconnection, and alignment operations in a seamless sequence that eliminates idle time and accelerates production while maintaining high precision through automated control.
Solution Approach 2:
Components such as interconnects and mounting fixtures are pre-positioned and pre-aligned before the main assembly operation, allowing the robotic system to execute rapid, precise assembly without time-consuming on-site adjustments.
4Ease of manufacture
If automated assembly processes are implemented, then manufacturing efficiency increases, but process complexity increases
Solution Approach 1:
The automated assembly process is divided into discrete, modular operations such as cell mounting, interconnection, and panel assembly, each performed by specialized robotic modules. This segmentation simplifies the overall system by allowing independent optimization and maintenance of individual functional units.
Solution Approach 2:
The automated assembly system employs universal robotic modules and interchangeable fixtures that can perform multiple assembly tasks, reducing the need for specialized equipment for each operation and thereby managing system complexity while maintaining high manufacturing efficiency.
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
This approach reduces labor costs, increases manufacturing efficiency, and enhances solar array performance and reliability by enabling automated assembly of solar cell panels with precise bonding and interconnection.
Implementation Method 1
methods for automated alignment and bonding using pressure-sensitive adhesive (PSA) patches
Data Source
AI summary
A method of fabricating a solar cell array module or panel comprising providing a support, providing a face sheet having a top side and an opposite bottom side, mounting the bottom side of the face sheet on the support, dispensing an adhesive on a plurality of discrete predefined regions on the top side of the face sheet where a string of solar cell assemblies is to be mounted using an automated process, positioning and mounting an interconnected string of solar cell assemblies on the adhesive regions on the top side of the face sheet using machine vision, and applying heat or pressure to bond the interconnected string of solar cell assemblies to the adhesive regions on the top side of the face sheet.