Photovoltaic grid glass

Abstract

The utility model discloses photovoltaic gridding glass which comprises a glazed square tube, and the inner wall of the glazed square tube is fixedly connected with a first insulating sleeve. The glazed square tube is adopted to support the glass body, the surface of the glazed square tube is not hollowed out, the supporting performance of the glazed square tube is further guaranteed, the first insulating sleeve formed by cutting a white oak plate is adopted, the advantage of high hardness of white oak is utilized, glass can be further supported, and the service life of the glass is prolonged. Meanwhile, the white oak plate has insulativity, so that first-stage insulation is carried out between the glass body and the glazed square tube, multi-stage insulation can be carried out between the glass body and the glazed square tube through arrangement of a second insulation sleeve, a third insulation sleeve and a fourth insulation sleeve, and the stability of the device is improved; the device has the advantages that the stability is high, and the polarization reaction of the glaze material is not easy to occur.

Description

Technical Field

[0001] The utility model relates to the technical field of grid glass, in particular to a grid glass for photovoltaic use. Background Art

[0002] The application of large silicon wafer battery technology in the photovoltaic industry highlights the flux value in the upstream manufacturing end of crystal pulling, batteries, and modules, and dilutes the manufacturing cost per watt; at the same time, on the system side, combined with the low voltage and high current output characteristics of the modules, the string length of a single string of the system is longer, and the wattage of the module per unit width is larger, diluting the costs of brackets, pile foundations, cables, labor and other parts. The reduction in the cost of modules and system ends has promoted a significant reduction in the cost of modules per kilowatt-hour. Among them, double-sided double-glass is one of the main products for large silicon wafer applications. Usually, the grid glass used on the back of double-sided double-glass is a regular and continuous shielding of the entire area of ​​the battery edge and the bus bar, realizing the utilization effect of secondary reflection of light between the cells, and the power is increased by about 1%-2% relative to fully transparent double-sided double-glass.

[0003] The utility model patent with the publication (announcement) number: CN215496747U solves the problem that due to the high current design of the large silicon wafer battery module, in order to reduce the internal power loss caused by the high current, the interconnection bars and bus bars of the module use thicker metal substrates. After lamination, the thick metal substrate makes the EVA or other packaging materials between the welding strip and the grid thinner. Under the PID (potential induced decay) that is, the specific bias conditions of the module combined with the high temperature and high humidity environment, the electrical gap between the charged body and the grid is reduced, which easily leads to chemical polarization reaction of the glazed material itself on the grid, and the glazed surface is gray or black discolored from the appearance. The gray discoloration phenomenon starts to expand from the overlap position of the interconnection bar and the bus bar, because the welding strip in this area is in the closest contact with the grid and the thickness of the local packaging insulation material is the thinnest. It adopts the method of hollowing out the glazed grid at the overlap position of the internal metal parts to completely isolate the local polarization phenomenon caused by the reduction of the electrical gap. Although this method has a simple structure, the use of a large number of hollowing out of metal parts will reduce the hardness of the metal parts, thereby reducing the stability of the supporting grid glass. Utility Model Content

[0004] In order to solve the problems raised in the above background technology, the purpose of the utility model is to provide a photovoltaic grid glass, which has the advantages of strong stability and glaze material is not prone to polarization reaction.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a grid glass for photovoltaics, comprising a glazed square tube, the inner wall of the glazed square tube is fixedly connected with a first insulating sleeve, the inner wall of the first insulating sleeve is fixedly connected with a second insulating sleeve, the inner wall of the second insulating sleeve is fixedly connected with a third insulating sleeve, the inner wall of the third insulating sleeve is fixedly connected with a glass body, the front and rear sides of the inner wall of the glazed square tube are fixedly connected with a fourth insulating sleeve, and the fourth insulating sleeve is respectively fixedly connected to the glass body, the first insulating sleeve, the second insulating sleeve and the third insulating sleeve.

[0006] As a preferred embodiment of the present invention, the first insulating sleeve is cut from a white oak board.

[0007] As a preferred embodiment of the present invention, the second insulating sleeve is cast from HDPE plastic.

[0008] As a preferred embodiment of the present invention, the third insulating sleeve is cut from a cross-linked polyethylene rubber sheet.

[0009] As a preferred embodiment of the present invention, the fourth insulating sleeve is cut from an EPDM rubber sheet.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0011] 1. The utility model adopts a glazed square tube to support the glass body. The surface of the glazed square tube in the device is not hollowed out, thereby ensuring its support. In addition, the device adopts a first insulating sleeve cut from a white oak board. By taking advantage of the high hardness of the white oak, the glass can be further supported, thereby improving the stability of the device. At the same time, the white oak board has insulating properties, thereby performing a first-level insulation between the glass body and the glazed square tube. By setting the second insulating sleeve, the third insulating sleeve and the fourth insulating sleeve, multi-level insulation can be performed between the glass body and the glazed square tube, thereby avoiding gray or black discoloration on the surface of the glazed square tube. The device has the advantages of strong stability and the glazed material is not prone to polarization reaction.

[0012] 2. The first insulating sleeve of the utility model, which is cut from white oak boards, has the advantages of high hardness, not easy to crack, strong support and insulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a top view and cross-sectional schematic diagram of the structure of the utility model;

[0015] Figure 3 For this utility model Figure 2 A schematic diagram of the enlarged structure in the middle.

[0016] In the figure: 1. glazed square tube; 2. first insulating sleeve; 3. second insulating sleeve; 4. third insulating sleeve; 5. glass body; 6. fourth insulating sleeve. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] like Figures 1 to 3 As shown, a grid glass for photovoltaic use includes a glazed square tube 1, the inner wall of the glazed square tube 1 is fixedly connected with a first insulating sleeve 2, the inner wall of the first insulating sleeve 2 is fixedly connected with a second insulating sleeve 3, the inner wall of the second insulating sleeve 3 is fixedly connected with a third insulating sleeve 4, the inner wall of the third insulating sleeve 4 is fixedly connected with a glass body 5, the front and rear sides of the inner wall of the glazed square tube 1 are fixedly connected with a fourth insulating sleeve 6, and the fourth insulating sleeve 6 is fixedly connected to the glass body 5, the first insulating sleeve 2, the second insulating sleeve 3 and the third insulating sleeve 4 respectively.

[0019] refer to Figure 2 and Figure 3 The first insulating sleeve 2 is cut from a white oak board.

[0020] As a technical optimization solution of the utility model, the first insulating sleeve 2 cut from white oak boards has the advantages of high hardness, not easy to crack, strong support and insulation.

[0021] refer to Figure 2 and Figure 3 The second insulating sleeve 3 is cast from HDPE plastic.

[0022] As a technical optimization solution of the utility model, the second insulating sleeve 3 cast by HDPE plastic has the advantages of light weight, flame retardancy and insulation.

[0023] refer to Figure 2 and Figure 3 The third insulating sleeve 4 is cut from a cross-linked polyethylene rubber sheet.

[0024] As a technical optimization solution of the utility model, the third insulating sleeve 4 cut by the cross-linked polyethylene rubber sheet has the advantages of good insulation, stable quality, large current carrying capacity, light weight and corrosion resistance.

[0025] refer to Figures 1 to 3 The fourth insulating sleeve 6 is cut from an EPDM rubber sheet.

[0026] As a technical optimization solution of the utility model, the fourth insulating sleeve 6 cut from EPDM rubber sheet has the advantages of excellent resistance to overhead view, oxidation resistance, insulation and ozone resistance. While insulating, it can also protect the first insulating sleeve 2, the second insulating sleeve 3 and the third insulating sleeve 4.

[0027] The working principle and use process of the utility model: when in use, the device adopts a glazed square tube 1 to support the glass body 5. The surface of the glazed square tube 1 in the device does not adopt a hollow design, thereby ensuring its support. In addition, the device adopts a first insulating sleeve 2 cut from a white oak board. By taking advantage of the high hardness of white oak, the glass can be further supported, thereby improving the stability of the device. At the same time, the white oak board has insulating properties, thereby performing a first-level insulation between the glass body 5 and the glazed square tube 1. By setting the second insulating sleeve 3, the third insulating sleeve 4 and the fourth insulating sleeve 6, multi-level insulation can be performed between the glass body 5 and the glazed square tube 1, thereby avoiding the gray or black discoloration on the surface of the glazed square tube 1.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A photovoltaic grid glass, comprising a glazed square tube (1), characterized in that: The inner wall of the glazed square tube (1) is fixedly connected to a first insulating sleeve (2), the inner wall of the first insulating sleeve (2) is fixedly connected to a second insulating sleeve (3), the inner wall of the second insulating sleeve (3) is fixedly connected to a third insulating sleeve (4), the inner wall of the third insulating sleeve (4) is fixedly connected to a glass body (5), and the front and rear sides of the inner wall of the glazed square tube (1) are fixedly connected to a fourth insulating sleeve (6), and the fourth insulating sleeve (6) is respectively fixedly connected to the glass body (5), the first insulating sleeve (2), the second insulating sleeve (3) and the third insulating sleeve (4).

2. The photovoltaic grid glass according to claim 1, characterized in that: The first insulating sleeve (2) is cut from a white oak board.

3. The photovoltaic grid glass according to claim 1, characterized in that: The second insulating sleeve (3) is cast from HDPE plastic.

4. The photovoltaic grid glass according to claim 1, characterized in that: The third insulating sleeve (4) is cut from a cross-linked polyethylene rubber sheet.

5. The photovoltaic grid glass according to claim 1, characterized in that: The fourth insulating sleeve (6) is cut from an EPDM rubber sheet.

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