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Printing design method of solar cell, printing assembly and photovoltaic assembly

A technology for solar cells and solar cells, applied in printing, printing machines, screen printing, etc., can solve the problems of no handover of printing patterns, darkening and blackening of solar cells or panels, and reduce electroluminescence failures. Quantity, ensure efficiency, and reduce the effect of defect rate

Active Publication Date: 2022-02-25
HENGDIAN GRP DMEGC MAGNETICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the printing device is more prone to micron-level deviations during printing, which leads to the problem of little or no handover in the printed pattern obtained by two printings. At this time, the transmission resistance of the solar panel will be increased, and the solar panel will be affected. The ability to collect carriers will lead to partial darkening and blackening of solar cells or panels, resulting in a solar cell defect rate as high as 0.5%-1%

Method used

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  • Printing design method of solar cell, printing assembly and photovoltaic assembly
  • Printing design method of solar cell, printing assembly and photovoltaic assembly
  • Printing design method of solar cell, printing assembly and photovoltaic assembly

Examples

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Embodiment 1

[0042] This embodiment provides a printing design component of a solar cell, which can reduce the deviation between the first pattern and the second pattern during multiple printings, prevent solar cells from being partially darkened or blackened, and reduce the defective rate of solar cells. lower.

[0043] Such as figure 1 As shown, the printed design assembly of solar cells includes the following steps:

[0044] S1. Print and form a plurality of first patterns 1 on the upper surface of the solar battery sheet 10. The plurality of first patterns 1 are arranged in an array on the upper surface of the solar battery sheet 10. The solar battery sheet 10 has a center line 101, and the first pattern 1 in each row The widths of the patterns 1 are equal, and the width of the first pattern 1 gradually increases along a direction away from the centerline 101 .

[0045] In this embodiment, the upper surface of the solar battery sheet 10 is specifically the back surface of the solar b...

Embodiment 2

[0067] This embodiment provides a printed design assembly of a solar cell, which is used to implement the printed design assembly of a solar cell described in Embodiment 1. Specifically, the printing design component of the solar cell includes a support component, a first screen, a second screen, a scraper and a driving member.

[0068] Wherein, the support assembly is used to support the solar cells 10 , and the first screen is used to form a plurality of first patterns 1 . Specifically, the first screen has a plurality of meshes, each mesh is used to form a first pattern 1, and the plurality of meshes are arranged in an array, and the first screen has a line of symmetry, and the width of each row of meshes is equal , and along the direction of the symmetry line, the width of the mesh increases gradually. Optionally, the line of symmetry can be understood as a line passing through the center of the first screen, and the line of symmetry extends along the width direction of t...

Embodiment 3

[0072] This embodiment provides a photovoltaic module, which can be applied to solar cells. Specifically, the photovoltaic module includes a backplane, a first adhesive film layer, a battery layer, a second adhesive film layer, and a glass substrate. The battery layer includes a plurality of solar cells 10, and the solar cells 10 are any one of the above-mentioned embodiments. The solar cell sheet 10 obtained by printing the design assembly of the solar cell.

[0073] It should be noted that in this embodiment, the materials of the first adhesive film layer and the second adhesive film layer are not specifically limited, as long as they play a role in bonding the glass substrate, the back plate and the battery layer. For example, both the first adhesive film layer and the second adhesive film layer are EVA (Ethylene Vinyl Acetate, ethylene-vinyl acetate copolymer) adhesive film layers. EVA adhesive film has good flexibility, transparency and chemical stability, which can redu...

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Abstract

The invention discloses a printing design assembly of a solar cell, a printing assembly and a photovoltaic assembly, which belong to the field of photovoltaic cell. The printing design assembly of the solar cell comprises a plurality of first patterns formed on the upper surface of a solar cell piece through printing, the plurality of first patterns are arranged on the upper surface of the solar cell piece in an array mode, the solar cell piece is provided with a center line, the widths of the first patterns in each row are equal, and the widths of the first patterns are gradually increased in the direction away from the center line; a plurality of second patterns are formed on the upper surface of the solar cell piece through printing, the second patterns are in one-to-one correspondence with the first patterns, and the second patterns are located on the first patterns corresponding to the second patterns. The deviation between the first pattern and the second pattern during multiple printing can be reduced, and local darkening and blackening of the solar cell piece can be prevented, so that the reject ratio of the solar cell is low.

Description

technical field [0001] The invention relates to the field of photovoltaic cells, in particular to a printed design component of a solar cell, a printed component, and a photovoltaic component. Background technique [0002] At present, in order to improve the conversion efficiency of solar panels, it is usually necessary to perform two overprints on the front electrode. The two overprints involve the matching of different pastes. The different pastes include but are not limited to silver paste and aluminum paste, or silver paste and silver aluminum paste. [0003] In the prior art, the conventional design scheme of printed graphics is that the printed pattern obtained by the second printing is completely located on the printed pattern obtained by the first printing, that is, the printed pattern obtained by the first printing is completely different from the printed pattern obtained by the second printing. The transfer width of the printed pattern is the same. However, the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41M1/12B41F15/12H01L31/0224H01L31/18
CPCB41M1/12B41F15/12H01L31/022425H01L31/1876B41P2215/50Y02E10/50Y02P70/50
Inventor 周东何悦郭帅王在发任勇
Owner HENGDIAN GRP DMEGC MAGNETICS CO LTD