A Method for Improving Welding Hidden Cracks of Single Crystal Cells

A cell welding and cell technology, applied in circuits, electrical components, photovoltaic power generation, etc., can solve problems such as cracks that are prone to occur, and achieve the effect of avoiding debris or cracks and solving debris.

Active Publication Date: 2019-10-22
WUXI SUNTECH POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] like figure 1 As shown, in the actual welding process, the end of the first single crystal battery piece is welded to the ribbon 2, and due to the stress of the ribbon after welding, this part is prone to cracks;

Method used

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  • A Method for Improving Welding Hidden Cracks of Single Crystal Cells
  • A Method for Improving Welding Hidden Cracks of Single Crystal Cells
  • A Method for Improving Welding Hidden Cracks of Single Crystal Cells

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with specific drawings and embodiments.

[0028] A method for improving single-crystal cell welding cracks, comprising the following steps:

[0029] Step 1. Select two monocrystalline cells 3, face up, and align the end of the first monocrystalline cell with the head of the second monocrystalline cell, as shown in figure 1 shown;

[0030] Step 2. Prepare an arched bent plate 1, such as Figure 4 As shown, the welding strip 2 is attached to the arched bending plate 1, so that the bending shape of the welding strip 2 is the same as that of the arched bending plate 1;

[0031] In the embodiment of the present invention, the material of the welding strip 2 is copper, and the surface is sprayed with a tin layer;

[0032] Such as Figure 5 As shown, step 3. Attach the above-mentioned bent ribbon 2 to the welding position of the two monocrystalline solar cells, so that the arched bending position of the s...

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Abstract

The invention discloses the technical field of solar battery panel manufacturing, and relates to a method for improving the welding hidden cracks of monocrystal battery pieces. The method comprises the following steps: selecting two monocrystal battery pieces; preparing an arched bending plate; using the arched bending plate to bend a solder strip; adhering the bent solder strip to the welding parts of the battery pieces; putting a light shielding plate; heating a lamp tube; and welding. According to the method disclosed by the invention, the shape of the solder strip used for welding the monocrystal battery pieces is changed by using the improved bending plate, and then the problem of hidden cracks generated when the monocrystal battery pieces are welded can be avoided, so that the rejectratio in the production process is reduced.

Description

technical field [0001] The invention relates to a method for improving hidden cracks in the welding of single crystal cells, which belongs to the technical field of solar cell panel manufacturing. Background technique [0002] In the solar panel manufacturing process, the welding station is to heat the single battery sheet through the tinned copper strip (that is, the welding strip) under the infrared lamp tube, and then weld the tinned copper strip and the battery piece together, and the tinned copper strip It is to connect the front of the first piece with the back of the second piece, and so on to make a battery string; [0003] Such as figure 1 As shown, in the actual welding process, the end of the first single crystal battery piece is welded to the ribbon 2, and due to the stress of the ribbon after welding, this part is prone to cracks; [0004] Such as figure 2 As shown, the existing bent plate is a zigzag bent plate; [0005] Such as image 3 As shown, the Z-s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/18
CPCH01L31/1804H01L31/188Y02E10/547Y02P70/50
Inventor 王晨光付明诚薛俊
Owner WUXI SUNTECH POWER CO LTD
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