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Single-screen plate equipment and technology for printing main grid-free battery piece front electrode

A front electrode and cell technology, applied in the field of solar energy, can solve the problem of no busbar-less cell, etc., and achieve the effects of reducing work quality requirements, large application space, and reducing production costs

Inactive Publication Date: 2018-03-13
宁波瑞元天科新能源材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Many patents on cell printing screens are related to cells with busbars, but there are no screens for cells without busbars.

Method used

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  • Single-screen plate equipment and technology for printing main grid-free battery piece front electrode
  • Single-screen plate equipment and technology for printing main grid-free battery piece front electrode
  • Single-screen plate equipment and technology for printing main grid-free battery piece front electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Such as figure 1 , Figure 7 with Figure 8 As shown, a single-screen screen equipment for printing the front electrode of a cell without busbars, including a workbench 7, a scraper 6, a single-screen screen 5 and a conductive silver paste outlet, and the workbench 7 is equipped with a cell transport platform, the cells 8 are placed on the cell movement platform, the single-screen screen 5 is set above the cell delivery platform, the scraper 6 and the conductive silver paste outlet are set above the single-net screen 5, and the single-net screen 5 is a non-busbar screen plate, which is provided with a number of fine grid line printing places 2, and busbar line end printing places 1 are provided at both ends of the fine grid line printing place in the vertical direction.

[0048] It also includes enhanced welding spot printing 3, which is arranged between the main grid end printing 1 and between the two thin grid printing 2.

[0049] It also includes a printing part 4...

Embodiment 2

[0069] Such as figure 2 As shown, the single-screen screen plate 5 also includes printed places 3 of reinforced soldering points, which are arranged between the printed places 1 of the ends of the busbars. The printing place 3 of the enhanced welding point is on the connection line between the printing places at the ends of a pair of bus bars.

[0070] Others are the same as embodiment 1

Embodiment 3

[0072] Such as image 3 As shown, the single-screen screen plate 5 also includes a printed portion 4 for enhancing the electrical connection effect, which is arranged on a straight line perpendicular to the printed portion 2 of the fine grid lines. The printed part 4 of the enhanced electrical connection effect part is on the connecting line of the printed part of a pair of busbar ends.

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PUM

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Abstract

The invention aims to provide single-screen plate equipment and technology for printing a main grid-free battery piece front electrode with low printing production cost and possessing high generationcapacity. The single-screen plate equipment comprises a work bench, a scraper, a single-screen plate and a conductive silver paste outlet, wherein a battery piece delivering platform is arranged on the work bench; a battery piece is placed on the battery piece delivering platform; the single-screen plate is arranged over the battery piece delivering platform; the scraper and the conductive silverpaste outlet are arranged over the single-screen plate; the single-screen plate is a main grid-free plate and provided with a plurality of fine grid printing parts; two ends of each fine grid printingpart in a vertical line direction are provided with main grid end printing parts. The production technology removes a main grid printing technology and conducts printing work on the main grid ends. The printing plate technology for the main grid-free solar cell piece has great application range and can promote development of the solar photovoltaic industry.

Description

technical field [0001] The invention belongs to the technical field of solar energy, and in particular relates to a production equipment and process of solar cells, in particular to a single-screen screen equipment and process for printing front electrodes of solar cells without busbars Background technique [0002] The global fossil energy crisis and environmental pollution have promoted the rapid development of the photovoltaic industry. Recently, components based on crystalline silicon cells account for more than 80% of the global photovoltaic module market. Since the development of crystalline silicon cells, their production cost and power generation have become the main constraints on their development. In terms of production cost, silicon material accounts for about 60-70% of the material cost, and the amount of silver paste accounts for about 20-30% of the material cost. The predecessors boldly proposed the busbar-free technology, which is the most urgent desire for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41F15/36H01L31/18H01L31/0224
CPCH01L31/022425H01L31/18B41F15/36Y02E10/50Y02P70/50
Inventor 熊华平四建方李建峰
Owner 宁波瑞元天科新能源材料有限公司