Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Solar cell back panel, preparation method thereof and solar module

A technology for solar cells and backplanes, applied in electrical components, chemical instruments and methods, circuits, etc., can solve problems such as poor weather resistance, low adhesion, and non-environmental protection, and achieve strong weather resistance, high adhesion, and improved weather resistance Effect

Inactive Publication Date: 2011-05-04
BYD CO LTD
View PDF1 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention solves the technical problems of poor weather resistance, low adhesion between layers, high cost and no environmental protection existing in the prior art

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
  • Solar cell back panel, preparation method thereof and solar module
  • Solar cell back panel, preparation method thereof and solar module
  • Solar cell back panel, preparation method thereof and solar module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Take 0.25mm thick aluminum foil as a barrier layer, wipe both sides of the aluminum foil with anhydrous ethanol cotton, and blow dry with a hair dryer. Powder electrostatic spraying equipment (model: HVM2072, manufacturer: Zhengzhou Chaohui Electrostatic Plastic Spraying Equipment Co., Ltd.) is used to spray PPS powder with a thickness of 0.04mm on both sides of the aluminum foil. Then transfer it to an oven and bake at 290°C for 3 minutes, take it out and let it cool naturally, then a PPS weather-resistant layer and a PPS insulating layer can be formed on both sides of the aluminum foil. Through the above steps, the solar cell back sheet of this embodiment is prepared, which is denoted as A1. The solar cell backsheet has figure 1 structure shown.

Embodiment 2

[0033]Take 0.25mm thick aluminum foil as a barrier layer, wipe both sides of the aluminum foil with anhydrous ethanol cotton, and blow dry with a hair dryer. Using co-extrusion compound equipment (model: SJ-LM1250, manufacturer: Changzhou Sanyuan Plastic Machinery Co., Ltd.), using aluminum foil as the middle layer, extruding a 0.05mm thick PPS layer on one surface, and extruding on the other surface 0.05 mm thick PET layer. Then, the PPS layer and the PET layer on the two surfaces of the aluminum foil are hot-compressed and composited with the aluminum foil through the composite roller, so that the PPS weather-resistant layer and the PET insulating layer can be formed on both sides of the aluminum foil. Through the above steps, the solar cell backsheet of this embodiment is prepared, which is denoted as A2.

Embodiment 3

[0035] Take a 0.25mm thick copper-plated film as a barrier layer, wipe both sides of the aluminum foil with anhydrous ethanol cotton, and dry it with a hair dryer. Brush the adhesive EVA with a thickness of 0.01mm on the upper and lower sides of the copper-plated film, and then attach a 0.02mm PPS film to it on one surface, and attach a 0.02mm PC film to it on the other surface, heat Pressure curing, forming a PPS weather-resistant layer and a PC insulating layer on both sides of the copper-plated film. Through the above steps, the solar cell backsheet of this embodiment is prepared, which is denoted as A3. The solar cell backsheet has figure 2 structure shown.

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
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides a solar cell back panel which comprises an insulating layer, an obstructing layer and a weathering layer from top to bottom, wherein the obstructing layer is a metal layer; and the weathering layer is a polyphenyl thioether layer. The invention also provides a solar module which comprises a battery, a euphotic zone and a back panel, wherein the euphotic zone, the battery and the back panel are sequentially overlapped from top to bottom. The solar module is characterized in that the back panel is the solar cell back panel provided by the invention. The solar cell back panel of the invention has the advantages of low cost, environmental protection, weathering performance and higher adhesion among all layers.

Description

technical field [0001] The invention relates to a solar battery backboard, a preparation method thereof and a solar battery module using the backboard. Background technique [0002] Solar cell modules are directly exposed to the atmosphere during use, and are subject to temperature changes, ultraviolet radiation and water vapor erosion. If it cannot resist the influence of environmental factors, its photoelectric conversion performance will be easily attenuated and lose its practical value. Therefore, the research on solar cell packaging materials is very important. [0003] In order to improve weather resistance and block ultraviolet rays and water vapor, two polyvinyl acetate (EVA) films are generally used to encapsulate solar cells, and they are bonded together with the upper glass and the lower back sheet material to form a solar panel. . Tedlar-PET-Tedlar (TPT) packaging structure is often used in solar battery backplanes in the prior art; Tedlar is mainly made of pol...

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): H01L31/0203H01L31/18H01L31/048B32B15/04B32B15/20H01L31/049
CPCY02E10/50Y02P70/50
Inventor 张晓宇周良
Owner BYD CO LTD
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com