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Photovoltaic module for improving photoelectric conversion efficiency and preparation method thereof

A technology of photoelectric conversion efficiency and photovoltaic modules, applied in photovoltaic power generation, electrical components, circuits, etc., can solve the problems of low photoelectric conversion efficiency of photovoltaic cells, high temperature of photovoltaic cells, and damage of photovoltaic cells, etc., to improve light conversion Efficiency, increased refractive index, heat reduction effect

Active Publication Date: 2021-06-04
淮安斯惟拉能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to improve the photoelectric conversion efficiency of solar photovoltaic modules, people generally use toughened glass with high transmittance of visible light as the cover plate, but the existing high transmittance tempered glass cover plate has low reflectivity to ultraviolet rays and infrared rays, and ultraviolet rays and Infrared rays will not only cause damage to photovoltaic cells, but also convert photovoltaic cells into more heat after absorbing ultraviolet rays and infrared rays, making the temperature of photovoltaic cells higher and power reduced, thereby reducing the photoelectric conversion efficiency of photovoltaic cells

Method used

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  • Photovoltaic module for improving photoelectric conversion efficiency and preparation method thereof
  • Photovoltaic module for improving photoelectric conversion efficiency and preparation method thereof
  • Photovoltaic module for improving photoelectric conversion efficiency and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0028] see Figure 1-2 , the present invention provides a photovoltaic module that improves photoelectric conversion efficiency, and the photovoltaic module includes a backplane 1, a first EVA packaging adhesive layer 2, a thermally conductive packaging adhesive layer 3, a photovoltaic cell sheet layer 4, The heat-insulating packaging adhesive layer 5, the second EVA packaging adhesive layer 6 and the tempered glass cover plate 7, the upper end of the back plate 1 is evenly spaced with several bumps 8, and the upper end of the bumps 8 runs through the first EVA packaging Adhesive layer 2, and embedded in the thermally conductive packaging adhesive layer 3, one end of the bump 3 located inside the thermally conductive packaging adhesive layer 3 is fixed with a heat absorbing plate 13, and the tempered glass cover plate 7 includes a glass substrate 9, The glass substrate 9 is provided with an ultraviolet light absorbing layer 14 , a niobium pentoxide layer 10 , an AZO layer 11 a...

Embodiment 2

[0043] Different from Example 2, the thickness of the glass substrate 9 is 800 microns, the thickness of the niobium pentoxide 10 is 100 nanometers, the thickness of the AZO layer 11 is 100 nanometers, and the thickness of the silver layer 12 is 100 nanometers. The thickness of the ultraviolet absorbing layer 14 is 90 nanometers.

Embodiment 3

[0045] Different from Example 1-2, the thickness of the glass substrate 9 is 800 microns, the thickness of the niobium pentoxide 10 is 120 nanometers, the thickness of the AZO layer 11 is 120 nanometers, and the silver layer 12 The thickness of the ultraviolet light absorbing layer 14 is 150 nanometers.

[0046] The tempered glass cover plates of the photovoltaic modules produced in Example 1, Example 2 and Example 3 were respectively selected as the experimental group 1, the experimental group 2 and the experimental group 3, and the tempered glass cover plates of the traditional photovoltaic components were selected as the control group, respectively. The transmittance and reflectance of each group of photovoltaic modules to visible light, ultraviolet light and infrared light were measured, and the measurement results are shown in Table 1:

[0047]

[0048] Table I

[0049] After several experiments, it can be concluded that the tempered glass cover plate of the photovolt...

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Abstract

The invention discloses a photovoltaic module capable of improving photoelectric conversion efficiency, and the photovoltaic module comprises a back plate, a first EVA packaging glue layer, a heat conduction packaging glue layer, a photovoltaic cell layer, a heat insulation packaging glue layer, a second EVA packaging glue layer, and a tempered glass cover plate which are sequentially arranged from bottom to top. A plurality of convex blocks are uniformly arranged at the upper end of the back plate at intervals. The upper end of the protruding block penetrates through the first EVA packaging adhesive layer and is embedded in the heat conduction packaging adhesive layer, a heat absorption disc is fixedly arranged at the end, located in the heat conduction packaging adhesive layer, of the protruding block, the tempered glass cover plate comprises a glass substrate, and an ultraviolet light absorption layer, a niobium pentoxide layer, an AZO layer and a silver layer are sequentially arranged on the glass substrate. According to the invention, the heat generated when the photovoltaic cell absorbs ultraviolet light and infrared light can be effectively reduced, so that the photovoltaic cell can work at low temperature and high power, and the photoelectric conversion efficiency of the photovoltaic module is improved.

Description

technical field [0001] The invention relates to the technical field of photovoltaic components, in particular to a photovoltaic component with improved photoelectric conversion efficiency and a preparation method thereof. Background technique [0002] Photovoltaic modules are devices that use the photovoltaic effect to convert sunlight energy into electrical energy. They can also be called solar panels. They are widely used in daily life and industrial production, such as user solar power, transportation, photovoltaic power plants, communications, etc. Because the current and voltage of a single solar cell are very small in traditional photovoltaic modules, they are generally connected in series to obtain high voltage, and then connected in parallel to obtain high current, output through a diode (to prevent current return), and package them in a On the stainless steel, aluminum or other non-metal frame, install the package glass on the front and the back plate on the back, a...

Claims

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Application Information

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IPC IPC(8): H01L31/048H01L31/18
CPCH01L31/0481H01L31/18Y02E10/50Y02P70/50
Inventor 缪清陈守辉苏青梅杨慧敏
Owner 淮安斯惟拉能源科技有限公司
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