Preparation method for copper base material photovoltaic welding strip

A technology of photovoltaic ribbon and copper substrate, applied in photovoltaic power generation, final product manufacturing, sustainable manufacturing/processing, etc., can solve problems such as uneven surface thickness, uneven welding, low refractive index, etc., to reduce optical power Loss, enhanced adhesion, surface smoothing effect

Active Publication Date: 2019-04-02
无锡明协科技实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the main production and processing method of photovoltaic ribbons is hot-dip plating. This production method often does not treat the copper ribbon base material thoroughly, so that the ribbons are prone to problems such as burrs, pinholes, spots, and uneven surface thickness. It is prone to uneven problems, which will affect or even shorten the service life of photovoltaic modules; and the hot-dip plating method usually produces gas pollution during the solder heating process, which will damage the health of the staff; at the same time, the cells of photovoltaic modules are currently being soldered The refractive index of the ribbon connection is lower than that of the battery sheet, and the absorption of light is low, which is not conducive to the light absorption power of the entire photovoltaic module.

Method used

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  • Preparation method for copper base material photovoltaic welding strip

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Effect test

Embodiment 1

[0024] A method for preparing a copper-based photovoltaic ribbon, characterized in that it specifically comprises the following steps:

[0025] 1) Cleaning the copper substrate with an acidic solution to remove dirt and impurities on the surface of the copper substrate;

[0026] 2) performing plasma treatment on the surface of the copper substrate;

[0027] 3) Vacuum depositing a base alloy layer on the surface of the copper substrate;

[0028] 4) A layer of solder is brush-plated on the surface of the primer alloy layer by using an electric brush plating process to obtain a finished copper-based photovoltaic ribbon.

[0029] The step 1) acidic solution is composed of the following raw materials in weight percentage: 15% hydrochloric acid, 10% hydrogen peroxide, 6% benzimidazole, and the rest is water, and the acidic solution treatment time is 80s.

[0030] The step 2) plasma treatment adopts normal temperature and pressure plasma treatment, the power of plasma treatment is ...

Embodiment 2

[0037] A method for preparing a copper-based photovoltaic ribbon, characterized in that it specifically comprises the following steps:

[0038] 1) Cleaning the copper substrate with an acidic solution to remove dirt and impurities on the surface of the copper substrate;

[0039] 2) performing plasma treatment on the surface of the copper substrate;

[0040] 3) Vacuum depositing a base alloy layer on the surface of the copper substrate;

[0041] 4) A layer of solder is brush-plated on the surface of the primer alloy layer by using an electric brush plating process to obtain a finished copper-based photovoltaic ribbon.

[0042] The step 1) acid solution is composed of the following raw materials in weight percentage: 10% hydrochloric acid, 5% hydrogen peroxide, 2% benzimidazole, and the rest is water, and the treatment time of the acid solution is 40s.

[0043] The step 2) plasma treatment adopts normal temperature and pressure plasma treatment, the power of plasma treatment i...

Embodiment 3

[0050] A method for preparing a copper-based photovoltaic ribbon, characterized in that it specifically comprises the following steps:

[0051] 1) Cleaning the copper substrate with an acidic solution to remove dirt and impurities on the surface of the copper substrate;

[0052] 2) performing plasma treatment on the surface of the copper substrate;

[0053] 3) Vacuum depositing a base alloy layer on the surface of the copper substrate;

[0054] 4) A layer of solder is brush-plated on the surface of the primer alloy layer by using an electric brush plating process to obtain a finished copper-based photovoltaic ribbon.

[0055] The step 1) acid solution is composed of the following raw materials in weight percentage: 28% hydrochloric acid, 15% hydrogen peroxide, 8% benzimidazole, and the rest is water, and the treatment time of the acid solution is 150s.

[0056] The step 2) plasma treatment adopts normal temperature and pressure plasma treatment, the power of plasma treatment...

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Abstract

The invention discloses a preparation method for a copper base material photovoltaic welding strip. The preparation method is characterized by specifically comprising the following steps of (1) carrying out cleaning treatment on a copper base material by adopting an acidic solution, and removing dirt and impurities on the surface of the copper base material; (2) carrying out plasma treatment on the surface of the copper base material; (3) depositing a bottoming alloy layer on the surface of the copper base material in a vacuum manner; and (4) adopting a brush electroplating process to carry out brush plating on the surface of the bottoming alloy layer with a layer of solder in order to obtain a finished copper base material photovoltaic welding strip product. The prepared copper base material photovoltaic welding strip is uniform in thickness, flat in surface and good in mechanical property, the resistivity of the welding material serving as a photovoltaic module battery piece is low,and the light absorption power loss of a photovoltaic module can be effectively reduced.

Description

Technical field: [0001] The invention relates to the technical field of photovoltaic welding strips, in particular to a method for preparing copper-based photovoltaic welding strips. Background technique: [0002] Photovoltaic welding ribbon, also known as tin-coated copper ribbon, is mainly used in the connection of photovoltaic module cells. As an important raw material in the welding process of photovoltaic modules, the quality of the welding ribbon will directly affect the quality of photovoltaic modules. At present, the main production and processing method of photovoltaic ribbons is hot-dip plating. This production method often does not treat the copper ribbon base material thoroughly, so that the ribbons are prone to problems such as burrs, pinholes, spots, and uneven surface thickness. It is prone to uneven problems, which will affect or even shorten the service life of photovoltaic modules; and the hot-dip plating method usually produces gas pollution during the sol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/05H01L31/18
CPCH01L31/0512H01L31/18Y02E10/50Y02P70/50
Inventor 孙如祥
Owner 无锡明协科技实业有限公司
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