Black welding strip for photovoltaic module and processing method of black welding strip

A technology of photovoltaic modules and processing methods, applied in photovoltaic power generation, laser welding equipment, metal processing equipment, etc., can solve problems such as limiting production efficiency, reducing curing time, and unable to increase curing temperature, so as to reduce production costs and improve production efficiency. , the effect of saving production steps and time

Pending Publication Date: 2021-07-27
WUXI SVECK TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional processing technology solder strip needs to be surface cured, and the process of surface curing requires 10-20 minutes at a temperature of 160 °. Since the melting point of the tin solder surface on the other side of the copper base layer is 180 °, the curing temperature cannot be increased to reduce the curing temperature. time, which limits the improvement of production efficiency

Method used

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  • Black welding strip for photovoltaic module and processing method of black welding strip
  • Black welding strip for photovoltaic module and processing method of black welding strip

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0024] Embodiment 2: a kind of processing method of black welding strip, mainly comprises the following steps:

[0025] Formation of the black etching layer 2: use a nanosecond laser to perform laser etching on the exposed surface of the copper base layer 1, such as figure 2 As shown, the nanosecond laser performs reciprocating scanning and etching perpendicular to the production movement direction of the copper base layer 1, thereby forming a black etching layer 2 on the exposed surface of the other side of the copper base layer 1. The black etching layer 2 is a microstructure, and the light is in The surface of the microstructure refracts and absorbs to form a black visual effect.

[0026] During etching, the distance between the laser emitting end of the nanosecond laser and the exposed surface on one side of the copper base layer 1 is 10 cm, the reciprocating speed of the nanosecond laser is 200 mm / s, and the production speed of the copper base layer 1 is 5 m / min. Becaus...

Embodiment 3

[0033] Embodiment 3: a kind of processing method of black welding strip, mainly comprises the following steps:

[0034] Formation of the black etching layer 2: use a nanosecond laser to perform laser etching on the exposed surface of the copper base layer 1, such as figure 2 As shown, the nanosecond laser performs reciprocating scanning and etching perpendicular to the production movement direction of the copper base layer 1, thereby forming a black etching layer 2 on the exposed surface of the other side of the copper base layer 1. The black etching layer 2 is a microstructure, and the light is in The surface of the microstructure refracts and absorbs to form a black visual effect.

[0035] During etching, the distance between the laser emitting end of the nanosecond laser and the exposed surface on one side of the copper base layer 1 is 15 cm, the reciprocating speed of the nanosecond laser is 350 mm / s, and the production speed of the copper base layer 1 is 7 m / min. Becaus...

Embodiment 4

[0042] Embodiment 4: a kind of processing method of black welding strip, mainly comprises the following steps:

[0043] Formation of the black etching layer 2: use a nanosecond laser to perform laser etching on the exposed surface of the copper base layer 1, such as figure 2 As shown, the nanosecond laser performs reciprocating scanning and etching perpendicular to the production movement direction of the copper base layer 1, thereby forming a black etching layer 2 on the exposed surface of the other side of the copper base layer 1. The black etching layer 2 is a microstructure, and the light is in The surface of the microstructure refracts and absorbs to form a black visual effect.

[0044] During etching, the distance between the laser emitting end of the nanosecond laser and the exposed surface on one side of the copper base layer is 20 cm, the reciprocating speed of the nanosecond laser is 500 mm / s, and the production speed of the copper base layer 1 is 10 m / min. Because...

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Abstract

The invention relates to the technical field of solder strip processing, in particular to a black solder strip for a photovoltaic module and a processing method of the black solder strip. The black solder strip comprises a copper-based layer, a black etching layer is formed on the end face of one side of the copper-based layer through laser etching, the black etching layer is of a microstructure, light is refracted and absorbed on the surface of the microstructure so as to form a black visual effect, and a tin-lead solder layer is formed on the end face of the other side of the copper-based layer in an attached mode. The processing method of the black welding strip comprises the four steps of black etching layer forming, welding strip forming, welding strip surface treatment and welding strip rolling. The etching layer is formed on the surface of the copper-based layer through laser, light is absorbed through the microstructure of the etching layer, the black visual effect is achieved, and compared with a traditional process, the production efficiency is greatly improved, and the production cost is reduced; and the laser processing surface treatment speed can reach 5-10 m/min, and the production effect is greatly improved compared with a film coating production process.

Description

technical field [0001] The invention relates to the technical field of welding ribbon processing, in particular to a black welding ribbon for photovoltaic modules and a processing method thereof. Background technique [0002] As the cost of photovoltaic modules decreases, more and more places use photovoltaic power generation. Among them, the roof area is also an important application scenario. In order to form a consistent appearance with the surrounding buildings and achieve better visual effects, black photovoltaic modules came into being. [0003] In the prior art, the black photovoltaic module mainly uses a black PET film to paste the soldering tape, so as to achieve the visual effect of the soldering tape being black. The traditional method has problems of complex process and requires special equipment for construction; there are problems of adhesion and reliability between the PET film material and the welding tape. The traditional processing technology welding str...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/05H01L31/18B23K35/40B23K35/02B23K26/362B23K26/352
CPCB23K26/362B23K35/02B23K35/40B23K26/352H01L31/0512H01L31/18Y02E10/50Y02P70/50
Inventor 程中广印冰
Owner WUXI SVECK TECH
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