Crystalline silicon solar cell screen for positive electrode hollow molding

A solar cell and positive electrode technology, applied in printing plates, circuits, photovoltaic power generation, etc., can solve the problem of unsatisfactory broken grid ratio, achieve the effects of increasing hot spot effect, wide application range, and simple screen structure design

Pending Publication Date: 2018-12-18
ZHEJIANG AIKO SOLAR ENERGY TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the conventional anti-broken grid design can reduce the chance of grid breakage when the battery is printed on the front side, as the components have higher and higher requirements on battery quality, the proportion of broken grids caused by the conventional design can no longer meet the requirements of the market. Therefore, it is necessary to There is a more reasonable and practical design to reduce the proportion of broken grids

Method used

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  • Crystalline silicon solar cell screen for positive electrode hollow molding
  • Crystalline silicon solar cell screen for positive electrode hollow molding
  • Crystalline silicon solar cell screen for positive electrode hollow molding

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Embodiment Construction

[0023] Such as Figure 1 to Figure 6 The crystalline silicon solar cell screen plate used for positive electrode hollow forming is shown. The positive electrode of the crystalline silicon solar cell includes the positive electrode main grid 1, the positive electrode fine grid 2 and the anti-broken grid structure 3, the anti-broken grid structure 3 and the positive electrode The fine grid 2 is integrally printed and formed, and the printed anti-broken grid structure 3 and the positive electrode fine grid 2 form a line, both of which are perpendicular to the positive electrode main grid 1. The anti-broken grid structure 3 is octagonal, and the anti-broken grid structure 3 is located on the The rectangular grid section in the middle is composed of two isosceles trapezoidal grid sections located on both sides of the rectangular grid section and arranged symmetrically with the rectangular grid section as the center. A reduced grid section in which the section of the grid 2 graduall...

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Abstract

The invention discloses a crystalline silicon solar cell screen for positive electrode hollow molding. A positive electrode comprises a positive electrode main grid, a positive electrode fine grid andgrid breaking prevention structures. The grid breaking prevention structures and the positive electrode fine grid are integrated printed and formed. The front face of the screen is provided with sensitive emulsion in a protruding manner. The sensitive emulsion corresponds to the grid breaking prevention structures of the positive electrode. When the crystalline silicon solar cell screen is used for printing the positive electrode, the positions, corresponding to the sensitive emulsion, of the grid breaking prevention structures are provided with hollowed grooves so that the grid breaking probability during positive electrode printing is reduced, and by preventing grid breaking, a function of reducing a hot spot effect of local heating of a module is achieved.

Description

technical field [0001] The invention relates to a solar cell structure, in particular to a crystalline silicon solar cell screen used for hollow-out molding of positive electrodes. Background technique [0002] The positive electrode design of crystalline silicon solar cells includes a main grid and a thin grid perpendicular to the main grid. The function of the thin grid is to collect the photo-generated current to the main grid. Phenomenon, it will affect the collection of photogenerated current and affect the efficiency of the battery. Modules are made of battery sheets with broken grids, and hot spots of local heating will appear at the broken grids, which will affect the life of the components. [0003] There are many reasons for grid breakage during solar cell printing, such as incorrect setting of screen parameters, mismatch between the line width of the screen and the slurry, clogging of the screen, wear of the scraper, excessive viscosity or drying of the slurry, s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41F15/36H01L31/18H01L31/0224
CPCH01L31/022425H01L31/1804B41F15/36H01L31/0224H01L31/022433B41F15/34B41N1/24H01L31/0512H01L31/068Y02E10/547Y02P70/50
Inventor 林纲正丰明璋方结彬陈刚
Owner ZHEJIANG AIKO SOLAR ENERGY TECH CO LTD
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