Double-border BIPV Photovoltaic Roof Tiles and Grounding Method for Double-border BIPV Photovoltaic Roof Tiles

Abstract

The present invention relates to a double-frame BIPV photovoltaic roofing tile and a grounding method for the double-frame BIPV photovoltaic roofing tile. The double-frame BIPV photovoltaic roofing tile includes a photovoltaic panel having opposite left and right edges, a left protective frame disposed at the left edge of the photovoltaic panel, a right protective frame disposed at the right edge of the photovoltaic panel, and a conductive resistive waterproof strip. The conductive resistive waterproof strip includes a strip-shaped body and a conductive body disposed within the body. The conductive body is electrically connected to the left protective frame and the right protective frame respectively. The grounding method for the double-frame BIPV photovoltaic roofing tile is as follows: A conductive resistive waterproof strip is provided. The waterproof strip includes a strip-shaped body and a conductive body disposed within the body. The conductive body is electrically connected to the left protective frame and the right protective frame respectively, and the left protective frame or the right protective frame is grounded. The present invention has a low grounding installation cost and high grounding reliability.

Description

Technical Field

[0001] The present invention relates to the field of photovoltaic power generation products, and particularly to a double-edge BIPV photovoltaic roofing tile product and a grounding method for the double-edge BIPV photovoltaic roofing tile. Background Art

[0002] When photovoltaic modules are applied to the building field, requirements such as grounding and lightning protection need to be met. The traditional distributed photovoltaic systems on the market now use standard photovoltaic modules with a surrounding protective frame structure. However, BIPV products do not adopt the standard photovoltaic module structure, and their protective frames are usually installed only on both sides, playing the roles of mutual lap joint and waterproofing. Such a structure results in no effective internal connection between its metal structures, not meeting the building lightning protection and grounding standards. Usually, when installing the system, each protective frame needs to be grounded. At the same time, since BIPV products need to be waterproof, a water-blocking rubber strip is generally added. The shape of the rubber strip is diverse, and the material is ethylene propylene diene monomer (EPDM), which is adhered to the top of the module by silicone, only achieving the effect of horizontal waterproofing.

[0003] As shown in Figure 1 and Figure 2 shown, the BIPV product includes a photovoltaic panel 1, a left protective frame 2, and a right protective frame 3, which are installed on a tile-hanging strip 5 with a grounding metal strip 4. When installing the system, for the left protective frame 2 and the right protective frame 3, they are respectively connected to the grounding metal strip 4 by using metal screws 6 through corresponding grounding connection wires 7. This installation method has too high installation costs, and the reliability depends on the construction quality. Summary of the Invention

[0004] The purpose of the present invention is to provide a double-edge BIPV photovoltaic roofing tile product with low installation costs and high grounding reliability.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is:

[0006] A double-edge BIPV photovoltaic roofing tile, comprising a photovoltaic panel having opposite left and right edges, a left protective frame provided at the left edge of the photovoltaic panel, and a right protective frame provided at the right edge of the photovoltaic panel. The double-edge BIPV photovoltaic roofing tile further includes a conductive water-blocking rubber strip, the conductive water-blocking rubber strip including a strip-shaped body and a continuous conductive body provided in the body, and the conductive body is electrically connected to the left protective frame and the right protective frame respectively.

[0007] Metal mounting screws with configured internal tooth washer gaskets are respectively arranged at both ends of the electrically conductive resistive water strip. The metal mounting screws are in close contact with the conductor through the internal tooth washer gaskets. Both ends of the water strip are respectively connected to the left protective frame and the right protective frame through the metal mounting screws. The metal mounting screws and the internal tooth washer gaskets are both electrically conductive connected to the conductor.

[0008] The body includes an insulating packaging part and two water retaining bosses arranged on the upper surface of the insulating packaging part. The water retaining bosses are respectively arranged along two opposite edges of the insulating packaging part. The conductor is arranged in the insulating packaging part.

[0009] The water retaining bosses are arranged obliquely with respect to the upper surface of the insulating packaging part.

[0010] The lower surface of the insulating packaging part is a curved surface with alternating convex and concave parts.

[0011] The electrically conductive resistive water strip is bonded to the upper surface of the photovoltaic panel.

[0012] The BIPV photovoltaic roofing tile is installed on the batten. A grounding metal strip is arranged on the batten. The left protective frame or the right protective frame of the BIPV photovoltaic roofing tile is connected to the grounding metal strip through a grounding connecting wire.

[0013] The present invention also provides a grounding method for a BIPV photovoltaic roofing tile product with low installation cost and high grounding reliability. The solution is as follows:

[0014] A grounding method for a double - border BIPV photovoltaic roofing tile. The double - border BIPV photovoltaic roofing tile includes a photovoltaic panel having opposite left and right edges, a left protective frame arranged on the left edge of the photovoltaic panel, and a right protective frame arranged on the right edge of the photovoltaic panel. The grounding method for the double - border BIPV photovoltaic roofing tile is: arranging an electrically conductive resistive water strip. The electrically conductive resistive water strip includes a strip - shaped body and a conductor arranged in the body. The conductor is electrically conductive connected to the left protective frame and the right protective frame respectively, and the left protective frame or the right protective frame is grounded.

[0015] The electrically conductive resistive water strip is transversely bonded to the upper surface of the photovoltaic panel and both ends overlap on the left protective frame and the right protective frame, and metal mounting screws with configured internal tooth washer gaskets are used to be electrically conductive connected to the left protective frame and the right protective frame. The metal mounting screws are in close contact with the conductor through the internal tooth washer gaskets. The metal mounting screws and the internal tooth washer gaskets are both electrically conductive connected to the conductor.

[0016] A grounding metal strip is provided on the tile hanging strip for installing the double - border BIPV photovoltaic roofing tile, and the left protective border or the right protective border is electrically connected to the grounding metal strip through a grounding connecting wire.

[0017] Due to the application of the above - mentioned technical solution, the present invention has the following advantages compared with the prior art: the grounding installation cost of the present invention is low and the grounding reliability is high. Brief Description of the Drawings

[0018] Attached Figure 1 FIG. is an installation schematic diagram of an existing double - border BIPV product.

[0019] Attached Figure 2 FIG. is an enlarged schematic diagram of part A of the installation of an existing double - border BIPV product.

[0020] Attached Figure 3 FIG. is a schematic diagram of the flat - type water - blocking rubber strip in the double - border BIPV photovoltaic roofing tile of the present invention.

[0021] Attached Figure 4 FIG. is a schematic diagram of the curved - type water - blocking rubber strip in the double - border BIPV photovoltaic roofing tile of the present invention.

[0022] Attached Figure 5 FIG. is a cross - sectional schematic diagram of the water - blocking rubber strip in the double - border BIPV photovoltaic roofing tile of the present invention.

[0023] Attached Figure 6 FIG. is a front - view schematic diagram of the double - border BIPV photovoltaic roofing tile of the present invention.

[0024] Attached Figure 7 FIG. is an enlarged schematic diagram of part B in the double - border BIPV photovoltaic roofing tile of the present invention.

[0025] Attached Figure 8 FIG. is an enlarged schematic diagram of part C in the double - border BIPV photovoltaic roofing tile of the present invention.

[0026] Attached Figure 9 FIG. is a front - side installation schematic diagram of the double - border BIPV photovoltaic roofing tile of the present invention.

[0027] Attached Figure 10 FIG. is an enlarged schematic diagram of part D in the double - border BIPV photovoltaic roofing tile of the present invention.

[0028] Attached Figure 11 FIG. is a back - side installation schematic diagram of the double - border BIPV photovoltaic roofing tile of the present invention.

[0029] Attached Figure 12 FIG. is a schematic diagram of the flat - type double - border BIPV photovoltaic roofing tile of the present invention.

[0030] Attached Figure 13Schematic diagram of the curved double - border BIPV photovoltaic roofing tile of the present invention.

[0031] In the above - mentioned drawings: 1. Photovoltaic panel; 2. Left protective border; 3. Right protective border; 4. Grounding metal strip; 5. Hanging tile strip; 6. Metal screw; 7. Grounding connecting wire; 8. Conductive water - resistant rubber strip; 9. Insulating packaging part; 10. Water - blocking convex platform; 11. Conductive body; 12. Metal installation screw; 13. Inner - tooth serrated gasket. Detailed implementation manners

[0032] The present invention will be further described below in conjunction with the embodiments shown in the drawings.

[0033] Embodiment 1: As shown in the attached Figures 3 to 5 figure, a conductive water - resistant rubber strip 8 applicable to double - border BIPV products includes a strip - shaped body and a continuous conductive body 11 arranged in the body.

[0034] Specifically, the conductive water - resistant rubber strip 8 can be a flat - type conductive water - resistant rubber strip 8 as shown in the attached Figure 3 figure applicable to flat double - border BIPV products, that is, the axis of its body is a straight line, or it can also be a curved - type conductive water - resistant rubber strip 8 as shown in the attached Figure 4 figure applicable to curved double - border BIPV products, that is, the axis of its body is a curve.

[0035] The body of the conductive water - resistant rubber strip 8 includes a strip - shaped insulating packaging part 9 and a plurality of water - blocking convex platforms 10 arranged on the upper surface of the insulating packaging part 9. The conductive body 11 is arranged in the insulating packaging part 9, that is, the conductive body 11 is wrapped by the insulating packaging part 9. The water - blocking convex platforms 10 and the conductive body 11 both extend along the length direction of the body, that is, the length direction of the insulating packaging part 9.

[0036] In this embodiment, the body includes two water - blocking convex platforms 10, and the two water - blocking convex platforms 10 are respectively arranged along two opposite edges of the insulating packaging part 9. The water - blocking convex platforms 10 are inclined with respect to the upper surface of the insulating packaging part 9 (that is, an acute - angle is formed between the water - blocking convex platforms 10 and the upper surface of the insulating packaging), so that in the cross - section of the water - resistant rubber strip 8, the two water - blocking convex platforms 10 and the insulating packaging part 9 form a slightly inclined "concave" shape. The lower surface of the insulating packaging part 9 is an uneven and alternating curved surface, which is used to increase the bonding strength with the glue during installation.

[0037] Both the insulating packaging part 9 and the water - blocking convex platforms 10 of the conductive water - resistant rubber strip 8 are made of ethylene - propylene - diene monomer (EPDM) anti - aging polymer materials and can be integrally formed. The multiple water - blocking convex platforms 10 perform multiple water - blocking functions. The strip - shaped conductive body 11 is made of metal material, and its cross - section is usually rectangular, and its size needs to meet relevant standards.

[0038] The above-mentioned electrically conductive water-blocking rubber strip 8 is installed by configuring the metal mounting screw 12 of the internal tooth washer 13. There is an internal tooth washer 13 made of metal between the head of the metal mounting screw 12 and the insulating packaging part 9. The metal mounting screw 12 is connected to the conductor 11 through the internal tooth washer 13 (when the metal mounting screw 12 is rotated and installed, the internal tooth washer 13 damages the insulating packaging part 9 to contact the conductor 11). The metal mounting screw 12 is arranged in the groove formed by the water-blocking boss 10.

[0039] The electrically conductive water-blocking rubber strip 8 is soft in texture and can adhere to flat and curved surfaces.

[0040] As shown in the Figures 6 to 11 accompanying drawings, a double-frame BIPV photovoltaic roofing tile includes a photovoltaic panel 1, a left protective frame 2, a right protective frame 3, and the above-mentioned electrically conductive water-blocking rubber strip 8. The photovoltaic panel 1 is generally formed by laminating and encapsulating glass, an adhesive layer, and solar cells, and has opposite and parallel left and right edges. The left protective frame 2 is arranged on the left edge of the photovoltaic panel 1, and the right protective frame 3 is arranged on the right edge of the photovoltaic panel 1. Both the left protective frame 2 and the right protective frame 3 are made of metal materials and have a certain cross-sectional shape. They are respectively installed on the left and right edges of the photovoltaic panel 1 and are connected to the photovoltaic panel 1 by means of gluing, interference fit, etc., playing the roles of left and right connection and product waterproofing, and at the same time can also play the roles of increasing product strength and protecting the glass.

[0041] The above-mentioned electrically conductive water-blocking rubber strip 8 is horizontally arranged on the upper surface of the photovoltaic panel 1 and is bonded to the upper surface of the photovoltaic panel 1 by silicone, double-sided tape, etc. The two ends of the electrically conductive water-blocking rubber strip 8 are respectively connected to the left protective frame 2 and the right protective frame 3 through the metal mounting screw 12. The metal mounting screw 12 is in conductive connection with the conductor 11 through the internal tooth washer 13 in close contact, and both the metal mounting screw 12 and the internal tooth washer 13 are in conductive connection with the conductor 11. Thus, the left protective frame 2 and the right protective frame 3 are connected through the conductor 11 and the metal mounting screw 12, playing the function of electrical interconnection.

[0042] The double-frame BIPV photovoltaic roofing tile is installed on the batten 5. A grounding metal strip 4 is arranged on the batten 5. The left protective frame 2 or the right protective frame 3 of the double-frame BIPV photovoltaic roofing tile is connected to the grounding metal strip 4 through the grounding connecting wire 7. The two ends of the grounding connecting wire 7 are respectively connected to the left protective frame 2 or the right protective frame 3 and the grounding metal strip 4 through standard metal screws 6. The metal screws 6 are equipped with internal tooth washers 13 made of metal materials.

[0043] The above-mentioned water-blocking rubber strip 8 is applicable to flat products and curved products, as shown in the Figure 12 accompanying Figure 13 drawings and the

[0044] It can be seen from this that a grounding method for a double - framed BIPV photovoltaic roofing tile including a photovoltaic panel, a left protective frame, and a right protective frame is as follows: A conductive resistive waterproof strip 8 is provided. The conductive resistive waterproof strip 8 includes a strip - shaped body and a continuous conductor 11 arranged inside the body. The conductor 11 is electrically connected to the left protective frame 2 and the right protective frame 3 respectively, and the left protective frame 2 or the right protective frame 3 is grounded. The conductive resistive waterproof strip 8 is transversely bonded to the upper surface of the photovoltaic panel 1, and both ends overlap on the left protective frame 2 and the right protective frame 3. And a metal mounting screw 12 with an internal - toothed washer 13 is used to connect to the left protective frame 2 and the right protective frame 3. The metal mounting screw 12 is in close contact with the conductor 11 through the internal - toothed washer 13. Both the metal mounting screw 12 and the internal - toothed washer 13 are electrically connected to the conductor 11. A grounding metal strip 4 is provided on the tile - hanging strip 5 for installing the double - framed BIPV photovoltaic roofing tile. The left protective frame 2 or the right protective frame 3 is electrically connected to the grounding metal strip 4 through a grounding connection wire 7.

[0045] Without changing the characteristics of the double - framed BIPV product, this solution changes the structure of the waterproof strip 8, adds a conductor 11 inside it, and electrically connects the two - side protective frames through the conductive resistive waterproof strip 8, enabling the left and right two - side protective frames of the double - framed BIPV product to achieve grounding continuity inside the product, meeting the building material standards, reducing the workload of grounding the protective frames during subsequent system installation. Only one side needs to be grounded, reducing the installation cost. At the same time, both the two - side protective frames and the conductive resistive waterproof strip 8 are installed before leaving the factory, and a full inspection of grounding continuity is carried out, improving the reliability and electrical safety of the product and the operating safety of the system.

[0046] The main problems solved by this solution are that the existing double - framed BIPV products on the market cannot achieve grounding continuity inside the product, the installation difficulties and excessively high costs caused by grounding a single metal protective frame during the installation process, and the connection reliability problem.

[0047] The above - mentioned embodiments are only used to illustrate the technical concept and characteristics of the present invention. Their purpose is to enable those familiar with this technology to understand the content of the present invention and implement it accordingly, and cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. A double - border BIPV photovoltaic roofing tile, comprising a photovoltaic panel having opposite left and right edges, a left protective border disposed at the left edge of the photovoltaic panel, and a right protective border disposed at the right edge of the photovoltaic panel, characterized in that: The double-border BIPV photovoltaic roofing tile further includes a conductive resistance water-proof strip, which includes a strip-shaped body and a continuous conductor disposed in the body. The conductor is electrically connected to the left protective border and the right protective border respectively, and the left protective border or the right protective border is grounded. Metal mounting screws with internal tooth washer are respectively disposed at both ends of the conductive resistance water-proof strip. The metal mounting screws are in close contact with the conductor through the internal tooth washer. Both ends of the water-proof strip are connected to the left protective border and the right protective border respectively through the metal mounting screws. The metal mounting screws and the internal tooth washers are both electrically connected to the conductor.

2. The double-sided frame BIPV photovoltaic roofing tile according to claim 1, wherein: The body includes an insulating packaging part and two water-blocking bosses disposed on the upper surface of the insulating packaging part. The water-blocking bosses are respectively disposed along two opposite edges of the insulating packaging part, and the conductor is disposed in the insulating packaging part.

3. The double-edge BIPV photovoltaic roofing tile according to claim 2, wherein: The water-blocking bosses are inclined with respect to the upper surface of the insulating packaging part.

4. The double-sided frame BIPV photovoltaic roofing tile according to claim 2, characterized in that: The lower surface of the insulating packaging part is a curved surface with alternating convex and concave parts.

5. The double-border BIPV photovoltaic roofing tile according to claim 1, wherein: The conductive resistance water-proof strip is bonded to the upper surface of the photovoltaic panel.

6. The double-border BIPV photovoltaic roofing tile according to claim 5, wherein: The BIPV photovoltaic roofing tile is installed on a batten. A grounding metal strip is disposed on the batten. The left protective border or the right protective border of the BIPV photovoltaic roofing tile is connected to the grounding metal strip through a grounding connection wire.

7. A grounding method for a double - border BIPV photovoltaic roofing tile, the double - border BIPV photovoltaic roofing tile comprising a photovoltaic panel having opposite left and right edges, a left protective border disposed at the left edge of the photovoltaic panel, and a right protective border disposed at the right edge of the photovoltaic panel, characterized in that: The grounding method of the double-border BIPV photovoltaic roofing tile is as follows: a conductive resistance water-proof strip is provided, which includes a strip-shaped body and a conductor disposed in the body. The conductor is electrically connected to the left protective border and the right protective border respectively, and the left protective border or the right protective border is grounded. The conductive resistance water-proof strip is transversely bonded to the upper surface of the photovoltaic panel and both ends thereof overlap on the left protective border and the right protective border. Metal mounting screws with internal tooth washer are used to make electrical connection with the left protective border and the right protective border. The metal mounting screws are in close contact with the conductor through the internal tooth washer. The metal mounting screws and the internal tooth washers are both electrically connected to the conductor.

8. The grounding method of the double-border BIPV photovoltaic roofing tile according to claim 7, characterized in that: A grounding metal strip is disposed on the batten for installing the double-border BIPV photovoltaic roofing tile. The left protective border or the right protective border is electrically connected to the grounding metal strip through a grounding connection wire.

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