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Solar cell

A technology of solar cells and film layers, applied in the field of solar energy, which can solve the problems of unclean surface, low photoelectric conversion rate of solar cells, insufficient combination of junction box and backplane, etc., and achieve the effect of firm combination and high photoelectric conversion rate

Inactive Publication Date: 2015-10-21
SUZHOU KEDE SUYUAN INSTR
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Problems solved by technology

[0003] Existing solar batteries generally include a junction box and a backplane, and the connection between the junction box and the backplane is made of silica gel. The contact surface between the junction box and the silica gel is relatively smooth, resulting in insufficient bonding between the junction box and the silica gel, so that the connection between the junction box and the back plate is not strong enough, and the junction box is easy to fall off
[0004] In addition, the current commercial crystalline silicon solar cells mainly absorb and utilize visible light of 400-700nm, and basically do not absorb and utilize light in the ultraviolet band below 400nm, resulting in partial sunlight energy not being effectively utilized, which affects to a certain extent Improve the efficiency of solar cells, so that the efficiency of current commercial crystalline silicon solar cells is basically at 14%-17%, and it is difficult to improve to a greater extent under the current production level of commercial crystalline silicon
Therefore, the photoelectric conversion efficiency of the solar cell in the prior art is low

Method used

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Embodiment Construction

[0014] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in combination with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary only, and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present invention.

[0015] see figure 1 and figure 2 , The solar cell provided by the embodiment of the present invention includes a junction box 1 , a plasma layer 2 , a silica gel 3 and a back sheet 4 . Wherein, the plasma layer 2 is arranged between the junction box 1 and the silica gel 3 , and the junction box 1 is connected to the backplane 4 through the silica gel 3 . The back plate 4 includes a PVF film layer 41 , a PET film layer...

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Abstract

The invention provides a solar cell comprising a junction box, a plasma layer, silica gel, and a backplane. The plasma layer is arranged between the junction box and the silica gel. The junction box is connected with the backplane through the silica gel. The backplane comprises a PVF film layer, a PET film layer, and an efficiency-increasing film layer which are successively arranged from top to bottom, wherein the efficiency-increasing film layer is used for absorbing ultraviolet light from 10 to 400nm. The PVF film layer, the PET film layer, and the efficiency-increasing film layer are formed by co-extrusion. The junction box of the solar cell is more firmly combined with the backplane and the solar cell has a high photoelectric conversion rate.

Description

technical field [0001] The invention relates to the technical field of solar energy, in particular to a solar cell. Background technique [0002] In recent years, environmental pollution has attracted worldwide attention, especially the greenhouse effect caused by carbon dioxide emitted from burning fossil fuels is a serious problem. Therefore, there is a strong desire to develop pollution-free energy sources. As a new type of energy, solar energy has the characteristics of inexhaustible supply, no pollution, and no pollution. It has attracted global attention and realized the industrialization of energy conversion. At present, one of the main means for people to utilize solar energy is to use solar cells to perform photoelectric conversion of solar energy to convert solar energy into electrical energy. [0003] Existing solar batteries generally include a junction box and a backplane, and the connection between the junction box and the backplane is made of silica gel. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/048H01L31/049H02S40/34
CPCY02E10/50H01L31/048H01L31/0481
Inventor 许伟明
Owner SUZHOU KEDE SUYUAN INSTR