Photovoltaic green building material and preparation method thereof

Abstract

The invention discloses a photovoltaic green building material which comprises a glass front end, ultra-white tempered glass, a back plate, tempered glass and a battery string group, the battery string group comprises a plurality of battery strings, each battery string is composed of a plurality of single crystal battery pieces, and the single crystal battery pieces are packaged between the glass front end and the back plate through sealant; PVB (Polyvinyl Butyral) is used as sealant; the plurality of groups of battery strings at least comprise eight groups of battery strings; and each group of battery strings at least comprises four single crystal battery pieces. The preparation method comprises the following steps: acquiring first temperatures of the front end of the glass, the back plate and the PVB glue; welding the single crystal battery pieces into a battery string; and laying the battery string on the back plate, laminating the front end of the glass and the back plate through PVB glue, and preparing the photovoltaic green building material after lamination. The photovoltaic green building material provided by the invention is large in overall size and can be applied to fences, isolation walls, fences and the like, the preparation method provided by the invention is simple and clear, a technical basis is provided for preparation work of large-size photovoltaic building materials, and the technical blank of the industry is filled.

Description

technical field [0001] The invention relates to the technical field of photovoltaic green detection, in particular to a photovoltaic green building material and a preparation method thereof. Background technique [0002] Photovoltaic module refers to the smallest indivisible photovoltaic cell combination device with packaging and internal connection, which can provide direct current output alone. [0003] Photovoltaic modules (commonly known as solar panels) are composed of solar cells (two specifications of the whole piece: 125*125mm, 156*156mm, 124*124mm, etc.) or solar cells of different specifications cut by laser cutting machine or steel wire cutting machine composed together. Since the current and voltage of a single solar cell are very small, then we first connect them in series to obtain a high voltage, and then connect them in parallel to obtain a high current, pass through a diode (to prevent current return) and then output, and package them in a stainless steel ...

AI Technical Summary

Problems solved by technology

[0004] Photovoltaic green building materials use photovoltaic modules to replace roofs, windows and exterior walls to form integrated photovoltaic and building materials products, which can be used as building materials and use green solar energy resources to generate electricity, which can be described as the best of both worlds, and can reduce system costs. Among building materials, the size of a single photovoltaic building material is relatively small. For larger application areas, photovoltaic building materials need to be spliced, which reduces the overall aesthetics of photovoltaic building materials. Large, problems in the preparation process include: in the process of assembly, short circuit is very easy to occur; in the process of assembling and laminating, it is very easy to open welding, crush or break the battery. In the technology, it only records the preparation method and process requirements for small-scale photovoltaic green building materials, and lacks the technical exploration of large-scale photovoltaic green building materials. Under the premise of the growing demand of consumers for the aesthetics of building materials, there is an urgent need for a large-scale photovoltaic green building material. Photovoltaic green building materials fill the gap in the market to meet consumers' aesthetic needs

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