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Solar photovoltaic component welding process

A technology of solar photovoltaic and welding technology, which is applied in the field of solar photovoltaic, can solve problems such as short circuits, and achieve the effects of increasing service life, improving resistance to distortion, and reducing bridging stress

Inactive Publication Date: 2011-03-02
恒基光伏电力科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention can reduce the mechanical stress of mechanical distortion, wind pressure and snow pressure on the cells of the photovoltaic module, reduce the fragmentation of the photovoltaic module, and solve the problem of PN junction short circuit in the welding process

Method used

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  • Solar photovoltaic component welding process
  • Solar photovoltaic component welding process
  • Solar photovoltaic component welding process

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Embodiment Construction

[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments, but it is not used as a basis for any limitation of the present invention.

[0024] Example. Solar photovoltaic modules, constituted as figure 1 , figure 2 with image 3 , including a group of solar cells 1, each solar cell 1 surface (including the front and back) is provided with a main grid 2 (see figure 2 ); the front of the solar cell and the back of the adjacent solar cell are welded and connected by the interconnection bar 4; at the end of the solar cell 1, there is a welding gap area 5 between the lead-out line of the interconnection bar and the solar cell (see image 3 ). The length of the welding void area 5 is preferably 5-10 mm.

[0025] The welding process of the aforementioned solar photovoltaic modules comprises the following steps:

[0026] a. Weld the front side first (ie image 3 above); preheat the soldering station a...

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Abstract

A solar photovoltaic component and a welding process. The solar photovoltaic component comprises a group of solar cell plates. The front face of the solar cell plate is welded with the back face of the adjacent solar cell plate through a bus bar. A welding gap is arranged between the bus bar leading-off wire and the solar cell plate. The welding process comprises the following steps: preheating the welding bench, heating the electric iron; pasting the release paper on the bus bar; stably welding the front bus bar and the solar cell plate; putting the cell plate in a series welding platform; firstly welding the front bus bar leading-off wire, then welding the back bus bar. The invention effectively controls the welding start position and the welding direction by setting the welding gap on the structure and pasting the release paper in the welding process, reduces the bridge stress of the front face of the cell plate and the adjacent back face of the cell plate after welding, ensures thePN junction will not short out in the welding process, improves the wind resistance and static pressure resistance so as to enhance the solar photovoltaic component service life.

Description

technical field [0001] The invention relates to a solar photovoltaic component and a welding process thereof, belonging to the technical field of solar photovoltaic. Background technique [0002] A solar cell is a device that directly converts light energy into electrical energy, and is considered to be the most important green energy source in the 21st century. The solar cell monomer is made of single crystal silicon or polycrystalline silicon material, because the output power of a single solar cell is difficult to meet the conventional electricity demand, and its ability to withstand the test of outdoor environment (humidity, ultraviolet rays, hail, distortion, vibration and other mechanical loads) is small , so several solar cell monomers must be connected in series and then tightly packaged before they can be used independently as a power source. The step of connecting several solar battery cells in series is completed by welding process. Specifically, it refers to: f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/05H01L31/18B23K1/00
CPCY02E10/50H01L31/05
Inventor 徐建荣张辉国徐新辉
Owner 恒基光伏电力科技股份有限公司
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