Solar photovoltaic cell assembly protected by back plate tempered glass

Abstract

The invention provides a solar photovoltaic cell assembly protected by the back plate tempered glass, and belongs to the technical field of solar photovoltaic assemblies. The solar photovoltaic cell assembly comprises a solar photovoltaic cell assembly body. The solar photovoltaic cell assembly body comprises a panel, a silicon wafer plate, a back plate and a back plate protective plate. The solar photovoltaic cell assembly is characterized in that a sealing rubber strip is arranged to surround the peripheral edge part of the solar photovoltaic cell assembly body. Meanwhile, the four corners of the solar photovoltaic cell assembly body are respectively provided with a corner protective member. By means of the four corner protective members, the panel, the silicon wafer plate, the back plate and the back plate protective plate are mutually combined as one piece. According to the technical scheme of the invention, the overall mechanical strength of the solar photovoltaic cell assembly is improved, and the solar photovoltaic cell assembly is longer in service life. The solar photovoltaic cell assembly is convenient in inspection and maintenance, and the long-term stable operation of the solar photovoltaic cell assembly is ensured. The generation of virtual seams between the layers of the solar photovoltaic cell assembly is avoided, so that the service life of the solar photovoltaic cell assembly is not influenced at all. During the packaging, warehousing, transporting and installing process, the solar photovoltaic cell assembly is well protected by the back plate tempered glass. Meanwhile, the solar photovoltaic cell assembly is prevented from getting aged, and is convenient to machine, good in elasticity and excellent in restorative property. The back plate tempered glass can be in good contact with the solar photovoltaic cell assembly body and the clamping force between the back plate tempered glass and the solar photovoltaic cell assembly body is strong.

Description

technical field [0001] The invention belongs to the technical field of solar photovoltaic components, and in particular relates to a solar photovoltaic cell component protected by tempered glass on a back plate. Background technique [0002] The solar photovoltaic cell assembly mentioned above refers to a solar photovoltaic cell assembly without a mounting frame, that is, without a frame. With the increasing awareness of human energy conservation and environmental protection, as well as the protection awareness of non-renewable natural energy such as oil, coal, natural gas and even sea ice, as an inexhaustible clean new energy source, solar energy is becoming more and more important. The more it is valued by all mankind, the application of solar photovoltaic power generation systems continues to expand. Solar photovoltaic cell modules are an important part of a complete set of solar photovoltaic systems, and their function is to use the photovoltaic effect to directly conv...

AI Technical Summary

Problems solved by technology

During the service process, especially with the prolongation of the service life, coupled with the influence of natural factors, the following two technical problems, which are both undesirable but inevitable (only in terms of degree differences), will generally occur: First, due to the imperceptible generation of gaps between layers, outside humid air, fog, rain, etc. will invade the solar cell layer, and cause the light transmittance of the backsheet layer to decrease, reducing the photoelectric conversion efficiency; second, in view of the solar photovoltaic modules. The geometric shape is rectangular or cube, so the four corners become weak points, and the aforementioned interlaminar cracking often starts at the corners

However, there are the following shortcomings: First, according to paragraph 0018 of the manual, the corner protector is made of weather-resistant silicone elastomer, and die-casting is carried out using a flat vulcanizer at 170°C (the length of the right-angle side is 35.3mm, and the length of the two side surfaces 5.4㎜), it can be seen that this kind of corner protector is relatively fragile due to the use of rubber, and the production process is troublesome; second, because the upper surface and the lower surface of the plane are arc-shaped, it is compatible with the solar photovoltaic module. The contact is essentially tangential contact, and because the material of the corner piece is rubber, it is difficult to ensure the effect of positioning on the solar photovoltaic module for a long time; third, because the overall shape of the corner protector is L-shaped, it is difficult to make the two sides of the corner piece The intersection of the right-angled sides and the corners of the solar photovoltaic cell module maintain an ideal matching effect, which will affect the overall fit and sealing effect of the entire corner protector and the solar photovoltaic cell module to a certain extent; the fourth is due to structural reasons, so The elastic force is relatively weak, so the clamping force or clamping force on the solar photovoltaic module cannot meet the expectations of the industry, and there may even be a risk of loosening

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