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Photovoltaic module

A photovoltaic module and photovoltaic backplane technology, applied in photovoltaic power generation, electrical components, semiconductor devices, etc., can solve the problems of lack of anti-PID effect, large power attenuation, etc., to ensure output power and power generation effect, and prevent PID effect Effect

Inactive Publication Date: 2015-03-18
CSG PVTECH
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  • Abstract
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Problems solved by technology

Solar cells and photovoltaic modules with traditional structures do not have the function of anti-PID effect, especially when the PID effect of photovoltaic modules occurs in a high-temperature and high-humidity environment, the power attenuation is relatively large, even reaching more than 50% in severe cases, which has become a problem that affects the quality and performance of photovoltaic modules. one of the important factors of

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  • Photovoltaic module

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Embodiment Construction

[0014] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0015] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.

[0016] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as...

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Abstract

The invention relates to a photovoltaic module, which comprises a photovoltaic back plate, a first packaging adhesive layer, a solar cell, a second packaging adhesive layer and a transparent cover plate which are stacked in sequence, wherein the volume resistivity of the first packaging adhesive layer and the volume resistivity of the second packaging adhesive layer are not less than 1.2*1014omega.cm. According to the photovoltaic module, by arranging the first packaging adhesive layer and the second packaging adhesive layer, which are high in volume resistivity, at two sides of the solar cell, the PID (potential induced degradation) effect can be effectively avoided, and therefore power attenuation cannot be caused even if the reverse bias phenomenon occurs in a photovoltaic module system during the operation of a photovoltaic power station, and the output power and the generating effect of the photovoltaic module are further ensured.

Description

technical field [0001] The invention relates to the technical field of photovoltaics, in particular to a photovoltaic module. Background technique [0002] In recent years, the actual operation experience of some photovoltaic power plants has shown that the system voltage of the photovoltaic power generation system has a continuous "potential induced degradation (PID)" effect on crystalline silicon cell components. Crystalline silicon cells based on screen printing pass through The leakage current caused by the loop formed by the packaging material (usually the upper surface of EVA and glass) to the frame of the photovoltaic module is considered to be the main cause of the above effect. Solar cells and photovoltaic modules with traditional structures do not have the function of anti-PID effect, especially when the PID effect of photovoltaic modules occurs in a high-temperature and high-humidity environment, the power attenuation is relatively large, even reaching more than 5...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/048H01L31/049
CPCY02E10/50H01L31/048H01L31/0481
Inventor 蒋忠伟董远强吴含封沈冠袆谌能全孙小菩彭华罗静
Owner CSG PVTECH
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