Edge cleaning method of ultraviolet laser thin-film solar battery

A technology of solar cells and ultraviolet lasers, applied to laser welding equipment, circuits, electrical components, etc., can solve problems such as waste, achieve the effects of reduced use costs, high edge cleaning efficiency, and improved laser energy utilization

Inactive Publication Date: 2011-06-15
CHANGZHOU INNO MACHINING
View PDF6 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] We can think that during the laser edge cleaning process, the solar film is directly vaporized under the action of the laser. The total thickness of these films does not exceed 5 microns, and the total thickness of the solar film of most batteries does not even exceed 2 microns. The energy required can be determined according to the relevant The heat of vaporization of the material is calculated,

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Edge cleaning method of ultraviolet laser thin-film solar battery
  • Edge cleaning method of ultraviolet laser thin-film solar battery
  • Edge cleaning method of ultraviolet laser thin-film solar battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] See figure 1 As shown, this is an embodiment of a method for clearing the edge of a ultraviolet laser thin film solar cell of the present invention. The material 14 to be processed is an amorphous silicon thin film solar glass cell substrate, and 1 is an ultraviolet laser with a wavelength of 355nm and a pulse repetition frequency of 30KHz. The average power is 12W, the pulse width is 18ns, the beam quality factor is less than 1.1, 2 is a 5-magnification laser beam expander, which expands the incident beam and collimates the beam, and the beam diameter is 5 mm, and 3 is the laser flat-top element, which shapes the collimated laser beam into Flat top beam, its output beam 4 is incident on the first reflective lens 9 of the vibrating mirror, 9 is clamped by the main shaft 10 of the vibrating mirror motor 11, 4 is reflected by 9, the output beam 8, 8 is reflected by the reflector 6 to form a beam 7, and the reflection The mirror 6 is fixed on the main shaft of the vibratin...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Wavelengthaaaaaaaaaa
Login to view more

Abstract

The invention discloses an edge cleaning method of an ultraviolet laser thin-film solar battery, belonging to the field of laser processing. The invention has the key characteristics that: ultraviolet laser with quite high absorption rate of transparent conductive film is introduced to the edge cleaning application of a thin-film solar battery, and in contrast to the laser power adopted by infrared laser edge cleaning, the method can complete high quality laser edge cleaning efficiently with smaller ultraviolet power, besides, the edge cleaning method has low possibility of damaging glass, extremely strong compatibility with different types of transparent conductive films and reduced using cost.

Description

[0001] Technical field The present invention belongs to the field of laser processing, especially the field of edge cleaning of laser thin film solar cells. Background technique [0002] At present, the development of thin-film solar energy is in the ascendant. The last process of thin-film solar glass substrate battery is to hermetically encapsulate the glass substrate. In order to prevent battery short circuit and better airtight packaging, the thin film (positive and negative The electrode film and the active layer film) need to be cleaned, which is called edge cleaning or edge sweeping in the industry. The earliest method of sandblasting is low cost, but the environmental pollution is serious, so it is gradually eliminated. [0003] Using a laser to directly vaporize the surrounding area of ​​the battery glass through the glass is a relatively popular method at present. In order to meet the production rhythm of one piece of glass per minute, the industry usually uses a high...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H01L31/18H01L31/20B23K26/00B23K26/06B23K26/064
CPCY02P70/50
Inventor 张立国
Owner CHANGZHOU INNO MACHINING
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap