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Insulation treatment method for film solar cell

A solar cell, insulation treatment technology, applied in circuits, electrical components, sustainable manufacturing/processing, etc., can solve the problems of high operating costs, sand consumption, low equipment utilization rate, etc., to save input costs and operating costs , the effect of clean process and simple process

Inactive Publication Date: 2012-04-04
HANERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Laser edge cleaning uses a high-power infrared or ultraviolet laser to remove the film around the battery. The core part is a high-power laser and its optical components. Laser edge cleaning is a mature edge cleaning process in the industry. Its edge cleaning effect is better and can be very good. Edge isolation is achieved, but the biggest problem with this edge cleaning process is that high-power lasers are expensive and operating costs are high, which does not meet the mainstream trend of thin-film solar cells to reduce power generation costs
[0007] Sandblasting is used to remove the film around the battery by sandblasting. The sandblasting process is also widely used in the industry, but the biggest problem is the consumption of sand, high operating costs, dirty process, and the need for sandblasting. Add special cleaning equipment for cleaning
[0008] Grinding wheel edge cleaning uses a grinding wheel to grind off the film around the battery. The advantage of grinding wheel edge cleaning is that the equipment cost is low, but the biggest problem is poor process stability, dirty process, low equipment utilization rate, high equipment noise, and the battery is prone to cracks.
[0009] It can be seen that the above three edge cleaning technologies have their own shortcomings.

Method used

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  • Insulation treatment method for film solar cell
  • Insulation treatment method for film solar cell
  • Insulation treatment method for film solar cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A kind of thin-film solar cell insulation treatment method, such as figure 1 As shown in the silicon-based thin-film solar cell, the coating includes a front electrode 2, an absorber layer 3, and a back electrode 4. The specific process is as follows:

[0029] Paste insulating tape 5 on the area around the surface of the glass 1 to be treated that needs to be cleared. Before deposition, the electrode 2 forms a conductive glass. After the conductive glass passes through laser and cleaning processes, it enters the coating equipment for the deposition of the absorbing layer 3. After laser etching , to form a film on the back electrode 4, and then after the third laser process, finally tear off the insulating tape, remove all the film layers on the edge of the thin film solar cell at one time, including the front electrode 2, the absorption layer 3 and the back electrode 4, and clean Finally, the insulation treatment of the battery is completed.

[0030] The insulating tap...

Embodiment 2

[0033] A thin-film solar cell insulation treatment method, the silicon-based thin-film solar cell, the coating includes a front electrode, an absorption layer, and a back electrode, and the specific process is as follows:

[0034] Paste insulating tape on the area around the surface of the glass to be treated that needs to be cleared. After depositing the front electrode to form conductive glass, tear off the insulating tape and remove the front electrode in this area; after the conductive glass has undergone laser and cleaning processes, paste it on the same area above A layer of insulating tape enters the coating equipment to deposit the absorbing layer. After laser etching, the back electrode is formed into a film. After the third laser process, the insulating tape is finally torn off to remove the absorbing layer on the edge of the thin film solar cell. And the back electrode, after cleaning, the insulation treatment of the battery is completed.

[0035] The insulating tap...

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Abstract

The invention relates to an insulation treatment method for a film solar cell, particularly to a cell edge removing method applied to the field of insulation treatment of the film solar cell. In the cell processing procedure, from a first layer to an outermost layer of a glass coating film, the regions to be subjected to edge removal among different coating layers are bonded to remove coverings to remove the coating layers in the regions so as to fulfill the aim of insulation of the solar cell. The method provided by the invention has simple and clean process and low cost; and compared with the traditional edge removal process, the special equipment for edge removal or the material cost is reduced, the equipment input cost and the running cost are saved, and the space of a factory building is reduced, and finally the aim of reducing the cost of the solar cell is fulfilled.

Description

technical field [0001] The invention relates to a thin-film solar battery insulation treatment method, in particular to a battery edge cleaning method applied in the field of thin-film solar battery insulation treatment. Background technique [0002] The future market development of photovoltaic applications, especially for use in grid-connected photovoltaic power plants, depends critically on the potential to reduce the cost of solar cell production. The production process of thin-film solar cells consumes less energy, which has the potential to greatly reduce raw material and manufacturing costs; at the same time, thin-film solar cells can still generate electricity under low light conditions. Therefore, the current market demand for thin-film solar cells is gradually increasing, and the technology of manufacturing thin-film solar cells has become a research hotspot in recent years. [0003] Thin-film solar modules are composed of glass substrates, metal layers, transpare...

Claims

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Application Information

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IPC IPC(8): H01L31/18
CPCY02P70/50
Inventor 王奇
Owner HANERGY TECH
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