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A kind of flux for high tension photovoltaic module

A photovoltaic module and flux technology, applied in welding equipment, welding medium, welding/cutting medium/material, etc., can solve the problem of excessive cell residues, affecting the absorption rate of module silicon wafers, EVA and cell bonding, and affecting the appearance of photovoltaic modules. and other problems, to achieve the effect of excellent electrical conductivity and high welding tension

Active Publication Date: 2018-11-09
深圳市唯特偶新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the solid content in the flux is too high, there will be too much residue on the cell, which will affect the light absorption rate of the component silicon chip and the bonding between EVA and the cell, and also affect the appearance of the photovoltaic module.

Method used

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  • A kind of flux for high tension photovoltaic module
  • A kind of flux for high tension photovoltaic module
  • A kind of flux for high tension photovoltaic module

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0039] The above flux is prepared by the following method:

[0040] At room temperature (25°C), first add the solvent into a clean enamel kettle with stirring, start stirring, add insoluble raw materials first, after stirring for half an hour, add other raw materials in turn, continue stirring until all solid substances are melted, and mix well. Stop stirring, let it stand and filter.

[0041] The above-mentioned flux can be applied to welding photovoltaic modules, preferably used in welding solar photovoltaic modules.

[0042] The method of using the flux of the present invention is: spraying, dipping and other methods are used to evenly coat the flux on the battery sheet to be welded, the preheating temperature is 110-130°C, and the welding temperature is 200-240°C.

Embodiment 1

[0045] A kind of soldering flux is provided in this embodiment, is prepared from the raw material of following weight:

[0046]

[0047]

[0048] The preparation method of the above-mentioned flux is as follows:

[0049] At room temperature (25°C), add the above-mentioned weight of isopropanol into a clean enamel kettle with stirring, start stirring, first add the above-mentioned weight of 2,4,6-tricarboxyphenol and hydrogenated rosin, and turn it at 75 rpm After stirring for half an hour, add other raw materials of the above weight, namely succinic acid, diethyl adipate, propylene glycol monomethyl ether and FC-4430, and continue to stir until all solid substances are dissolved, mix well, stop stirring, and let stand , Filter with a 200-mesh filter to obtain the flux of this embodiment.

[0050] Pull effect test:

[0051] Test method: The battery sheet (manufactured by Zhejiang Dongyang Dongci Co., Ltd.) has three grids and eight welding points, the front silver paste...

Embodiment 2

[0053] A kind of soldering flux is provided in this embodiment, is prepared from the raw material of following weight:

[0054]

[0055] The preparation method of the above-mentioned flux is as follows:

[0056] At normal temperature (25°C), add the above-mentioned weight of isopropanol into a clean enamel kettle with stirring, start stirring, and then add the above-mentioned weight of 2,6-dicarboxy-4-ethylphenol and hydrogenated rosin at 75 After stirring for half an hour at rpm, add other raw materials of the above weight, namely succinic acid, diethyl adipate, propylene glycol monomethyl ether and TX-10, and continue stirring until all solid substances are dissolved, mix well, and stop stirring , stand still, and filter with a 200-mesh filter to obtain the flux of this embodiment.

[0057] The tensile effect test method of this embodiment is the same as that of Example 1, and its test results are shown in Table 1.

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Abstract

The invention provides flux. The flux is prepared from an oxygen absorbent. The solid content of the flux is 0.9%-2.5%. The flux is also prepared from an organic acid activating agent, a film forming agent, a surface activating agent, a high-boiling-point solvent, a wetting agent and a solvent. The flux is applied to a photovoltaic module, the welding strength is high, the solid content is lower than that of traditional flux, and almost no residue exists on a cell after welding; and the flux is particularly suitable for the automatic machine welding process of the solar photovoltaic module, the welding tension is high, the electric conductivity is excellent, and the flux has already passed the tests of multiple well-known photovoltaic module enterprises.

Description

technical field [0001] The invention relates to the field of flux, in particular to a flux for high tensile photovoltaic components. technical background [0002] With the development of the economy and the progress of society, people put forward higher and higher requirements for energy, and finding new energy has become an urgent issue facing mankind. Solar energy is both clean energy and renewable energy. It can be used for free, without transportation, and has no pollution to the environment. Therefore, solar energy is an important direction for future energy development. Photovoltaic modules (also called solar panels) are the core part of solar power generation systems, and their quality directly determines the efficiency of solar power generation. Therefore, the production of photovoltaic modules has become particularly important. [0003] At present, the production of components is to use the automatic stringer to spray the flux on the silver paste of the cell, and t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/362
CPCB23K35/3612B23K35/362
Inventor 唐欣吴晶李维俊刘竞刘芳曹建峰
Owner 深圳市唯特偶新材料股份有限公司