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

Solder strip for IBC photovoltaic module

A technology of photovoltaic modules and welding strips, applied in photovoltaic power generation, electrical components, semiconductor devices, etc., can solve the problem of high temperature resistance of insulating paste, achieve precise thickness control, reduce stress concentration and easy cracking, and solve the problem of high temperature resistance Effect

Pending Publication Date: 2020-07-31
SPIC XIAN SOLAR POWER CO LTD +3
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a welding ribbon for IBC photovoltaic modules, which can buffer the stress after welding, reduce the fragmentation rate in the module preparation process, and solve the problem of the insulation paste of IBC batteries. High temperature resistance, the problem that it cannot be welded with conventional ribbon

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
  • Solder strip for IBC photovoltaic module
  • Solder strip for IBC photovoltaic module
  • Solder strip for IBC photovoltaic module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0021] according to Figure 1 to Figure 3 As shown, the welding ribbon for IBC photovoltaic modules provided by the present invention includes a base material 1 and a coating 2 covering the surface of the base material 1. The base material 1 is provided with stress buffer grooves 3, and the stress buffer grooves 3 are distributed on the base material. In the length direction and the width direction of the material 1.

[0022] The substrate 1 is oxygen-free copper, the composition of the coating 2 is Sn 50-55wt%, Bi 10-15wt% and Pb35-40wt%, the melting point of the coating 2 is 160-180°C, and it can be welded at low temperature, and its stability, Fluidity, wettability are relatively good.

[0023] Preferably, when the composition of the coatin...

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
widthaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention aims at disclosing a solder strip for an IBC photovoltaic module. The solder strip comprises a base material and a coating covering the surface of the base material, wherein stress buffer grooves are formed in the base material and distributed in the length direction and the width direction of the base material. Compared with the prior art, the solder strip of the invention has the following characteristics that the coating is made of three materials of Sn, Bi and Pb, the melting point is 160-180 DEG C, low-temperature welding can be achieved, good tensile force is achieved, andthe problem that insulating slurry of an IBC battery is not resistant to high temperature is solved; the stress buffer groove is formed in the base material, and low-temperature welding is adopted, sothat the problem that the IBC battery is easy to crack due to stress concentration during welding can be effectively reduced; and a vacuum evaporation method is adopted to plate a coating, so that the film forming speed is high, the quality is high, the thickness can be accurately controlled, and the purpose of the invention is achieved.

Description

technical field [0001] The invention relates to a welding ribbon for a photovoltaic module, in particular to a welding ribbon for an IBC photovoltaic module. Background technique [0002] As a low-carbon renewable energy, the solar energy industry is gaining more and more attention worldwide. At present, the most important application of solar energy is photovoltaic power generation. [0003] Solar photovoltaic modules connect batteries in series through welding ribbons. The quality of welding ribbons directly affects the output efficiency and fragmentation rate of current in the production of photovoltaic modules, and also has a great impact on the cost and output power of photovoltaic modules. It is an important part of photovoltaic modules. The main reason for the breakage of crystalline silicon cells during the welding process is that the silicon chip will rapidly drop from 250°C to room temperature in a short period of time during welding. After cooling, under the acti...

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 Applications(China)
IPC IPC(8): H01L31/05
CPCH01L31/0512Y02E10/50
Inventor 胡丹丹刘建达郭永刚屈小勇马继奎吴翔
Owner SPIC XIAN SOLAR POWER CO LTD
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