Solar Cell Mask Removal via Chemical Soaking and Suction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for removing masks from solar cells are inefficient, leading to poor cleaning results and residue attachment due to the strong adhesion of masks to the solar cell surface.
Innovation Solution
A cleaning system and method involving a soaking tank with a conveying roller mechanism and a liquid blocking mechanism, where the solar cell is immersed in cleaner to soften and react with the mask, allowing for efficient and thorough removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If spraying is used to remove the mask, then the cleaning process can be performed, but the cleaning efficiency is poor and mask residue remains on the solar cell
Solution Approach 1:
The patent introduces a soaking tank filled with cleaner as an intermediary medium between the mask and the solar cell surface. The cleaner chemically reacts with the mask material, facilitating its removal without direct mechanical contact. This chemical mediation resolves the contradiction by enabling thorough removal (improving manufacturing precision) while maintaining reasonable processing time (preserving productivity).
Solution Approach 2:
The patent changes the physical state and chemical parameters of the cleaning system by using a liquid soaking environment instead of gas-phase spraying. The cleaner is heated to specific temperatures and maintained at controlled concentrations, transforming the cleaning mechanism from surface-level spraying to deep chemical penetration, thereby achieving both high efficiency and thoroughness.
2Manufacturing precision
If the solar cell is completely immersed in cleaner, then the mask can soften and react fully, but the system complexity increases with soaking tank and liquid level control
Solution Approach 1:
The soaking tank serves multiple functions simultaneously: it contains the cleaner, maintains liquid level, provides chemical reaction space, and enables complete immersion. The liquid level control mechanism also serves dual purposes by preventing overflow while ensuring sufficient immersion depth. This multi-functionality reduces overall system complexity despite achieving complete mask removal.
Solution Approach 2:
The cleaner automatically softens and reacts with the mask through chemical processes without requiring additional active control mechanisms. The soaking tank design allows the cleaner to self-circulate and self-regulate the cleaning process, reducing the need for complex external control systems while maintaining complete immersion effectiveness.
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 system ensures complete immersion of the solar cell, allowing the mask to soften and react fully with the cleaner, resulting in efficient and thorough removal of the mask without residue attachment.
Implementation Method 1
immersing the solar cell into cleaner in a soaking tank to remove the mask attached to the solar cell... the mask to soften and react fully with the cleaner, resulting in efficient and thorough removal
Implementation Method 2
a sucking apparatus, including an sucking port for sucking the first substance
Implementation Method 3
a spraying apparatus, including a spraying port adjacent to the bottom of the soaking tank... configured to spray liquid or gas to flush the bottom of the soaking tank
Data Source
AI summary
Disclosed are a cleaning system and method for a solar cell. The cleaning system includes a cleaning device including a soaking tank configured to accommodate cleaner; and a filtering device configured to filter a first substance being a mixture of the cleaner and mask residue in the soaking tank. The filtering device including: a sucking apparatus including an sucking port for sucking the first substance; a spraying apparatus, including a spraying port oriented a region that the sucking port is capable of sucking in a bottom of the soaking tank, and the spraying port being configured to spry liquid or gas to flush the bottom of the soaking tank; and a filtering apparatus, connected to the sucking apparatus to receive and filter the first substance sucked by the sucking port.