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

A composite packaging integrated functional solar battery backplane

A solar cell and functional technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of EVA replacement layer loss of insulation, edge overflow glue delamination, insulation thickness reduction, etc., to achieve high reflective water permeability, The effect of low water permeability and good temperature resistance

Active Publication Date: 2020-07-28
ZHONGTIAN PHOTOVOLTAIC MATERIALS
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the EVA replacement layer is a single-layer structure. After lamination into components, there are many defects. The main manifestations are: ①After lamination, it is squeezed by the structural reinforcement layer and glass, and there is a phenomenon of edge overflow and delamination; ②The replacement layer It is a micro-foamed polyolefin structure, which is relatively soft. During the lamination process, the battery sheet and the ribbon completely penetrate the EVA replacement layer and directly contact the structural reinforcement layer, resulting in cracks and fragments of the battery sheet; ③ more serious is due to The conductor completely penetrates the EVA replacement layer, causing the EVA replacement layer to completely lose its insulating effect, and can only rely on the weather-resistant layer and the structural reinforcement layer for insulation, and the overall insulation thickness is reduced

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
  • A composite packaging integrated functional solar battery backplane
  • A composite packaging integrated functional solar battery backplane
  • A composite packaging integrated functional solar battery backplane

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0034] Such as figure 2 As shown, a composite packaging integrated functional solar cell backsheet disclosed by the present invention is composed of a weather-resistant layer, an adhesive layer, a PET layer, an adhesive layer, and a functional layer from the outside to the inside, and the weather-resistant layer is a PVDF film. , the thickness is 35 μm, the adhesive layer is polyurethane adhesive, the thickness is 10 μm, the thickness of the PTE layer is 200 μm, the functional layer includes a single milky white layer and a single transparent layer, and the milky white layer is glued to the PET layer, and its thickness is 90 μm , consisting of 25 parts of polyethylene, 45 parts of polyolefin elastomer, 19 parts of polyolefin plastomer, 10 parts of titanium dioxide, 0.4 part of antioxidant and 0.6 part of ultraviolet absorber, the transparent layer is bonded to the battery sheet, and its The thickness is 400 μm, and it is composed of 60 parts of polyolefin elastomer, 39 parts ...

no. 2 example

[0037] Such as image 3As shown, a composite packaging integrated functional solar battery backsheet disclosed by the present invention, from the outside to the inside, is a weather-resistant layer, an adhesive layer, a PET layer, an adhesive layer, and a functional layer, wherein the weather-resistant layer is an enhanced weather-resistant PET, the thickness is 35 μm, the adhesive layer is acrylic adhesive, the thickness is 10 μm, and the thickness of the PET layer is 200 μm. 25 parts, 45 parts of polyolefin elastomer, 19 parts of polyolefin plastomer, 10 parts of titanium dioxide, 0.4 parts of antioxidant and 0.6 parts of ultraviolet absorber, the thickness of the upper milky white layer is 20 μm, composed of 29 parts of polyethylene, polyolefin 55 parts of elastomer, 5 parts of polyolefin plastic body, 10 parts of titanium dioxide, 0.4 parts of antioxidant and 0.6 parts of ultraviolet absorber. 60 parts, composed of 39 parts of ethylene-vinyl acetate copolymer, 0.4 part of...

no. 3 example

[0040] Such as Figure 4 As shown, a composite packaging integrated functional solar cell backsheet disclosed by the present invention is composed of a weather-resistant layer, an adhesive layer, a PET layer, an adhesive layer, and a functional layer from the outside to the inside, and the weather-resistant layer is a PVDF film. , the thickness is 35 μm, the adhesive layer is polyurethane adhesive, the thickness is 10 μm, the thickness of the PTE layer is 200 μm, the functional layer includes a single layer of milky white layer and a double layer of transparent layer, wherein the thickness of the milky white layer is 100 μm, made of 25 parts of polyethylene , 45 parts of polyolefin elastomer, 19 parts of polyolefin plastic body, 10 parts of titanium dioxide, 0.4 parts of antioxidant and 0.6 parts of ultraviolet absorber, the thickness of the lower transparent layer is 400 μm, composed of 60 parts of polyolefin elastomer, ethylene- Composed of 39 parts of vinyl acetate copolyme...

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

A composite packaging integrated functional solar cell backsheet disclosed by the present invention, the photovoltaic backsheet is composed of a weather-resistant layer, an adhesive layer, a PET layer, an adhesive layer, a functional layer, and the functional layer from the outside to the inside. Including integrally formed milky white layer and transparent layer, wherein the milky white layer is a structure of one layer or more, with a thickness of 20~200μm, including modified inorganic fillers, modified resins, UV absorbers and antioxidants, transparent layer and cell stickers Combined, adopting a structure of one layer or more, with a thickness of 200-800 μm, including modified resin, ultraviolet absorber and antioxidant, a composite packaging integrated functional solar battery backsheet disclosed by the present invention adopts integrated functions The layer can replace the traditional adhesive film, which not only has high weather resistance, high reflection, high insulation, and low water permeability, but also protects the component's 25-year service life and increases the power of the component.

Description

technical field [0001] The invention relates to a photovoltaic battery backboard, in particular to a compound packaged integrated functional solar battery backplane. Background technique [0002] Crystalline silicon solar cell components include eight major materials, namely glass, encapsulation film, battery sheet, welding ribbon, silica gel, aluminum frame, junction box, and photovoltaic backplane. Photovoltaic backplane is an extremely important packaging material in photovoltaic modules. The sheet plays a supporting role, and at the same time, it directly contacts the external environment on a large area, and undertakes the important mission of ensuring the stable power generation of photovoltaic modules for 25 years. Excellent insulation, barrier and weather resistance are the reliability guarantees for its long-term application. [0003] All the backsheets currently on the market need to add a layer of adhesive film between the backsheet and the battery sheet, through ...

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
Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/049H01L31/048H01L31/18
CPCH01L31/0481H01L31/1876H01L31/049C09J133/00C09J175/04Y02E10/50
Inventor 刘香安王强王同心陈坤季明龙
Owner ZHONGTIAN PHOTOVOLTAIC MATERIALS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com