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Welding method and welding system

A welding system and welding method technology, applied in the field of solar cells, can solve the problems of fragmented cells and poor quality of cell components, and achieve the effects of reducing the impact, omitting the overturning operation, and avoiding the phenomenon of missing welding.

Inactive Publication Date: 2013-05-08
LIXIAN YINGLI NEW ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in the actual production process, it is found that the quality of the battery components welded by the above-mentioned welding method is poor, and when the existing welding method is used for welding, the battery chips are prone to fragments

Method used

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Embodiment 1

[0035] Embodiment 1 of the present invention provides a welding method, such as figure 1 Shown, described welding method comprises the following steps:

[0036] Step S101: Coating flux on the surface of the solder strip.

[0037] The process of coating the soldering flux on the surface of the soldering strip includes: firstly, uniformly coating the liquid soldering flux on the surface of the soldering strap; Wherein, the process of uniformly coating the liquid flux on the surface of the welding strip is to evenly brush the liquid flux on the surface of the welding strip, or uniformly spray the liquid flux on the surface of the welding strip, or soak the welding strip in the liquid In the flux, the liquid flux is evenly distributed on the surface of the solder strip, which is not limited in the present invention.

[0038] Step S102: Soldering the battery sheets with a soldering tape coated with flux.

[0039] The welding process of using the soldering tape coated with flux i...

Embodiment 2

[0042] Embodiment 2 of the present invention provides a welding system, such as figure 2 As shown, the welding system includes, in addition to the ribbon reel containing the ribbon, the shearing device for cutting the ribbon, and the welding cavity, the first end is connected to the ribbon reel, and the second end is connected to the ribbon reel. A flux coating device whose end is connected with the shearing device, and flux is contained in the flux coating device.

[0043] The welding ribbon is generally a reel of welding ribbon, and the reel of welding ribbon is placed on a designated position of the welding ribbon reel.

[0044] The welding ribbon coating device is located between the welding ribbon reel and the shearing device, and is used to coat the flux on the surface of the welding ribbon coming out of the welding ribbon reel. The welding ribbon coating device can be a brushing device, which can be The spraying device may also be a container containing flux, which is...

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Abstract

The invention provides a welding method which comprises coating scaling powder on the surface of a solder strip, and carrying out welding to battery pieces by adopting the solder strip with the scaling powder coated on the surface of the solder strip. The invention further provides a welding system which comprises a solder strip reel with a solder strip installed, a shearing device used for shearing the solder strip and a welding cavity, and further comprises a scaling powder coating device, wherein the first end of the scaling powder coating device is connected with the solder strip reel, the second end of the scaling powder coating device is connected with the shearing device, and the scaling powder is contained inside the scaling powder coating device. On one hand, the welding method and the welding system can reduce the influence of the impurities of the scaling powder to welding quality, avoid a solder skip phenomenon caused by unevenly coated scaling powder, and improve the welding quality between battery pieces. On the other hand, in a scaling powder coating process, the welding method and the welding system remove the turning over operation of the battery pieces, and therefore reduce the fragment risk of the battery pieces.

Description

technical field [0001] The invention belongs to the field of solar cells, in particular to a welding method and a welding system. Background technique [0002] In the process of making solar cells, encapsulation is a key step in the production of solar cells. Without a good encapsulation process, good quality cells cannot produce good quality modules. The packaging of the battery can not only ensure the life of the battery, but also enhance the resistance of the battery. [0003] The process of encapsulation includes the production process of the battery assembly. The production of the battery assembly requires a certain number of battery sheets to be connected in series, that is, the battery sheets are welded together through the bus bars on the upper and lower surfaces of the battery sheets. The welding operation of the battery slices is carried out by a welding machine, and the welding steps include: firstly brushing flux on the surface of the busbars on the upper and lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K1/00B23K1/20B23K3/06
Inventor 宋明亮张宏彬张佳刘双强苏哲
Owner LIXIAN YINGLI NEW ENERGY CO LTD
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