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A kind of preparation method of high-efficiency solar energy aluminum paste

A technology of solar energy and aluminum paste, which is applied in the manufacture of cables/conductors, conductive materials dispersed in non-conductive inorganic materials, electrical components, etc., can solve the problems of low conversion efficiency of batteries, achieve improved photoelectric conversion efficiency, uniform concentration, evenly dispersed effect

Active Publication Date: 2016-02-10
CHANGZHOU BAOBANG NEW ENERGY MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the invention is: to overcome the technical deficiency of low battery conversion efficiency in the prior art, and to provide a preparation method of solar aluminum paste with high battery conversion efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A preparation method for high-efficiency solar energy aluminum paste, comprising the following steps:

[0020] (1) Preparation of organic binder: in the reaction kettle, add polyester organic solvent diethyl malonate, diethyl succinate, add butyl acrylate and methyl acrylate modified by organic boron of 1wt% polymer, 3wt% ethyl cellulose, 0.1wt% organoboron modified phenolic resin, add mechanical stirring, stirring speed is 70 rpm, electric heating to 120 ° C, and then constant temperature stirring 2 ~ 4h, After all the above components are mixed evenly, cool to 80°C, filter with a screen, check the viscosity, and obtain the required organic binder; add organic boron modified phenolic resin, the boron content in the resin is quite high, which can be further improved The concentration of BSF, boron-containing organic polymers are used in the binder system, and the dispersion is very uniform, so the dispersion of the formed BSF layer is also very uniform, avoiding the une...

Embodiment 2

[0026] A preparation method for high-efficiency solar energy aluminum paste, comprising the following steps:

[0027] (1) Preparation of organic binder: in the reactor, add polyester organic solvent diethyl malonate, diethyl succinate, add butyl acrylate and methyl acrylate modified by organic boron of 4wt% Polymer, 6wt% ethyl cellulose, 0.4wt% organoboron modified phenolic resin, after adding, use mechanical stirring at a stirring speed of 90 rpm, heat up to 150°C with electric heating, and then stir at constant temperature for 2 to 4 hours , until all the above components are mixed evenly, cool to 80°C, filter with a screen, check the viscosity, and obtain the desired organic binder.

[0028] (2) Preparation of glass powder: take Bi by weight 2 o 3 60 copies, B 2 o 3 25 parts, SiO 2 10 parts, Al 2 o 3 10 copies, V 2 o 5 8 parts, mixed well and transferred to high temperature furnace, heated to 1100-1200°C and kept for 1-2 hours, the glass liquid was quenched and dri...

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PUM

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Abstract

The invention relates to the field of aluminum paste, in particular to a producing method of efficient solar aluminum paste. The method includes 1, producing an organic binder; 2, producing glass powder; 3, producing the aluminum paste, namely extracting 75 parts of spherical aluminum powder, 3 to 5 parts of the glass powder produced in the step 2 and 20 to 22 parts of the organic binder produced in the step 1, mixing for 30 min mechanically and evenly to obtain pre-mixed slurry, transferring into a grinder for grinding until the required specification is met, then discharging, and obtaining the required efficient solar aluminum paste. According to the technical field, the method has the advantages that since organic boron polymer is used in the binder system, dispersion is even, the concentration of a formed BSF layer is even, dispersing unevenness resulting from using inorganic boron is avoided, and photoelectric conversion efficiency is improved; since organic boron-modified polymer resin is used, the boron content in the resin is extreme high, and the concentration of the BSF layer can be further increased.

Description

technical field [0001] The invention belongs to the field of aluminum paste, and in particular relates to a preparation method of high-efficiency solar aluminum paste. Background technique [0002] Solar aluminum paste is generally composed of three major parts, aluminum powder, glass powder and organic binder. Among them, the organic binder is generally added various solvents with different boiling points to the terpineol system, and ethyl cellulose and modified phenolic resin are used as thickeners and film-forming agents; the function of aluminum powder is to melt at high temperature Sintering and silicon wafers form a good silicon-aluminum alloy layer and BSF layer, thereby improving the conversion efficiency of crystalline silicon solar cells; and the role of glass powder is to promote the melting and sintering of aluminum powder to help form a more uniform BSF layer. [0003] In order to further improve the photoelectric conversion efficiency of the cell, the traditio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B1/22H01B1/16H01B13/00
Inventor 谭恺
Owner CHANGZHOU BAOBANG NEW ENERGY MATERIAL