Integrated assembly type photovoltaic tile device

Abstract

The utility model belongs to the field of photovoltaic power generation, and particularly relates to an integrated assembly type photovoltaic tile device which comprises a plurality of photovoltaic tile units, each photovoltaic tile unit is provided with an assembly frame, and the photovoltaic tile units are assembled with one another and installed on a tile hanging strip. Each photovoltaic tile unit comprises a plurality of battery pieces which are back contact battery pieces with grid lines integrated on the back face and are distributed in a rectangular array mode. The positive electrodes and the negative electrodes of the adjacent battery pieces in each row abut against each other, the back surfaces of the adjacent battery pieces are connected through interconnecting strips, and the half-cut battery pieces are laminated, welded and connected in series to form n rows of long-strip-shaped battery panels, and n is larger than or equal to n; the anodes at one ends of the n rows of cell panels are gathered and connected in parallel, and the cathodes at the other ends are gathered and connected in parallel and are respectively led out by bus bars; according to the back contact battery piece integrated on the back face through the grid lines, the appearance color can be unified, shielding of the interconnection strips is reduced, the power generation efficiency is higher, in addition, through the arrangement of the assembly frame, installation is convenient and efficient, and fragmentary parts are reduced on the whole.

Description

Technical Field

[0001] The utility model belongs to the field of photovoltaic power generation, and particularly relates to an integrated assembled photovoltaic tile device. Background Art

[0002] Photovoltaic integrated buildings add the function of power generation to buildings, which must comply with both building code requirements and photovoltaic requirements.

[0003] Photovoltaic tiles, as the main application product of photovoltaic building integration, can not only replace traditional building roof tiles, but also have a large market application space and are of great promotion value.

[0004] However, the existing photovoltaic tile products have flat embossed glass on the front, which causes serious light pollution. The battery cells are double-sided welded, resulting in serious color difference. The four sides of the glass are all encapsulated with aluminum alloy metal frames, which have serious color difference. The metal frames are matched with various types of special metal hooks or other connectors, which makes the installation cumbersome and the construction efficiency low, which is not conducive to industrial promotion and limits the development and application of photovoltaic tiles. Utility Model Content

[0005] In view of the above problems, the utility model proposes an integrated assembled photovoltaic tile device, including a plurality of photovoltaic tile units, and each photovoltaic tile unit is provided with an assembly frame, which is assembled with each other and installed on a tile hanging strip;

[0006] Each photovoltaic tile unit includes a plurality of cells, wherein the plurality of cells are back-contact cells with grid lines integrated on the back and are distributed in a rectangular array;

[0007] The positive and negative electrodes of adjacent cells in each row are in contact with each other, and the backs are connected by interconnection strips. The cells are cut in half, stacked, welded, and connected in series to form n rows of long strips of cells, where n ≥ 2;

[0008] The positive poles of n rows of solar panels are connected in parallel at one end and the negative poles are connected in parallel at the other end, and are led out by busbars respectively;

[0009] The photovoltaic tile unit also includes glass for encapsulating n rows of solar panels and busbars. The surface of the glass has a three-dimensional pattern that can form diffuse reflection, and a junction box is arranged on the back, and the junction box is connected to the busbar.

[0010] Preferably, the battery cell is an N-type or P-type IC back contact battery cell.

[0011] Preferably, the interconnection strips are photovoltaic interconnection strips.

[0012] Preferably, the junction box is a backplane integrated junction box.

[0013] Preferably, the glass is embossed glass with rain flower pattern, which is bonded to the outer surface of the solar panel by an adhesive film and is used to encapsulate the busbar and the solar panel.

[0014] Preferably, the halved battery cells are respectively welded by overlapping the slices and chamfers of the halved battery cells.

[0015] Preferably, the tile hanging strips are laid horizontally at intervals, and photovoltaic tile units are installed at the intervals;

[0016] An upper edge frame, a lower edge frame and a short edge frame are arranged at the edge of the back of the glass, wherein:

[0017] The short edge frame is arranged along any wide side of the glass, and adjacent photovoltaic tile units are overlapped with each other through the short edge frame, so that the photovoltaic tile units are laid flush on the tile hanging strips along the length direction;

[0018] The upper edge frame and the lower edge frame are arranged along the two long sides of the glass respectively, and the upper edge frames and the lower edge frames of adjacent photovoltaic tile units are clamped with each other so that the photovoltaic tile units are arranged obliquely and stacked on the tile hanging strips along the width direction.

[0019] Preferably, the cross section of the short edge frame is in an upward shape, the first right side plane is connected to the wide side of the glass, and the left side of the short edge frame is bent upward to form a left side plane of the same height as the right side plane, which is used to overlap the adjacent wide sides of the glass;

[0020] The cross-section of the upper frame is in an upward shape, and the top end extends obliquely upward to form a slope. The second right side plane is connected to any long side of the glass. The cross-section of the lower frame is in a U-shape with an opening facing horizontally, and the top surface is connected to the other long side of the glass. The lower frame opening of the adjacent glass is engaged with the slope so that the photovoltaic tile unit is arranged at an angle and laid on the tile hanging strip in a stacked manner along the width direction.

[0021] Preferably, the photovoltaic tile unit further includes an isolation strip covering the busbar.

[0022] Preferably, the photovoltaic tile unit also includes product information of tile hanging strips, which is attached to the back of the glass.

[0023] Beneficial Effects

[0024] 1. The present application abandons the double-sided welded battery cells in the prior art, and uses back-contact battery cells integrated on the back side through grid lines, and the battery cells are preferably N-type or P-type IBC back-contact battery cells, which can make the appearance color uniform and reduce the shading of interconnection bars to increase the power generation efficiency. Furthermore, by using a three-dimensional pattern on the surface that can form diffuse reflection to replace the flat embossed glass, light pollution is reduced. Moreover, by setting an assembly frame, the connection method of the metal frame with multiple types of special metal hooks in the prior art is replaced, which is not only convenient and efficient to install, but also reduces the number of fragmented parts as a whole.

[0025] 2. This application sets up an isolation strip, which covers the busbar and can improve the appearance of the front of the product.

[0026] 3. The assembly frames of the present application are all arranged on the back of the glass for bonding. After the roof photovoltaic tiles are installed, there is no metal outer frame exposed, and the appearance consistency is high. Not only that, the special shape of the short edge frame allows adjacent photovoltaic tile units to overlap each other, and the left side of the short edge frame is bent upward to enclose to form a groove structure, which can be used for drainage. In addition, the upper edge frame and the lower edge frame are snapped together, so that adjacent photovoltaic tile units can be arranged at an angle and laid in layers on the tile hanging strips along the width direction. Compared with the metal frame with metal hooks or screws in the prior art, the above arrangement is not only faster and more efficient, but also reduces the use of fragmentary parts.

[0027] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 It shows a schematic diagram of assembling the photovoltaic tile unit and the tile hanging strip in an embodiment of the present invention;

[0030] Figure 2 A front schematic diagram of a photovoltaic tile unit in an embodiment of the present invention is shown;

[0031] Figure 3 A schematic diagram of the back side of an embodiment of the present invention is shown;

[0032] Figure 4 It shows the left side schematic diagram of the connection between the tile hanging bar and the photovoltaic tile unit in the embodiment of the present invention;

[0033] Figure 5 Shows Figure 4 An enlarged schematic diagram of

[0034] Figure 6 A schematic diagram of an explosion of a photovoltaic tile unit in an embodiment of the present invention is shown;

[0035] Figure 7 It shows a schematic diagram of the connection between the short edge frame and the photovoltaic tile unit in an embodiment of the present invention;

[0036] Figure 8 It shows a schematic diagram of a short edge frame cross section in an embodiment of the present invention;

[0037] Fig. 9 It shows a schematic diagram of the upper frame cross section in an embodiment of the present invention;

[0038] Fig.10 A schematic diagram of a lower edge frame cross section in an embodiment of the present invention is shown.

[0039] In the figure,

[0040] A, photovoltaic tile unit; 1, battery cell; 2, interconnection strip; 3, half battery cell; 4, positive electrode; 5, isolation strip; 6, busbar; 7, glass; 8, negative electrode;

[0041] 9, upper edge frame; 9a, second right side plane; 9b, inclined plane;

[0042] 10. Junction box;

[0043] 11, short edge frame; 11a, first right side plane; 11b, left side plane;

[0044] 12. Bottom edge frame;

[0045] 13. Tile hanging strip product information;

[0046] B. Hanging tile strips. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of 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.

[0048] refer to Figure 1 , Figure 1 A schematic diagram of the assembly of the photovoltaic tile unit and the tile hanging strip in an embodiment of the present invention is shown; the present application claims protection for an integrated assembled photovoltaic tile device, including a plurality of photovoltaic tile units A, and each photovoltaic tile unit A is provided with an assembly frame, which are assembled with each other and installed on the tile hanging strip B.

[0049] refer to Figure 2 and Figure 3 , Figure 2 A front schematic diagram of a photovoltaic tile unit in an embodiment of the present invention is shown; Figure 3 A schematic diagram of the back side of an embodiment of the present invention is shown;

[0050] Each photovoltaic tile unit A includes a plurality of cells 1, the cells 1 are N-type or P-type IBC back contact cells, and a plurality of cells 1 are back contact cells with grid lines integrated on the back, and are distributed in a rectangular array;

[0051] The positive and negative electrodes of the adjacent cells 1 in each row are in contact with each other, and the backs are connected by interconnection bars 2, which are photovoltaic interconnection bars. The half-cut cells 3 are stacked and welded, and the half-cut cells 3 are overlapped and welded at the slices and chamfers of the half-cut cells 1, and are connected in series to form n rows of long strips of cells, where n≥2;

[0052] The positive electrodes 4 of the n rows of solar panels are connected in parallel at one end, and the negative electrodes 8 are connected in parallel at the other end, and are led out by the busbars 6 respectively;

[0053] Photovoltaic tile unit A also includes glass 7 for encapsulating n rows of solar panels and busbars 6. The surface of glass 7 has a three-dimensional pattern that can form diffuse reflection. Glass 7 is rain flower pattern embossed glass, which is bonded to the outer surface of the solar panel with an adhesive film and is used to encapsulate the busbars 6 and the solar panels. A junction box 10 is arranged on the back. The junction box 10 is a back panel integrated junction box, and the junction box 10 is connected to the busbar 6.

[0054] The present application abandons the double-sided welded battery cells in the prior art, and integrates the back-contact battery cells on the back through the grid lines, and the battery cell 1 is preferably an N-type or P-type IBC back-contact battery cell, which can make the appearance color uniform and reduce the shading of the interconnection bars to improve the power generation efficiency. Furthermore, by using a three-dimensional pattern on the surface that can form diffuse reflection to replace the flat embossed glass, light pollution is reduced. Moreover, by setting an assembly frame, the connection method of the metal frame with various types of special metal hooks in the prior art is replaced, which is not only convenient and efficient to install, but also reduces the number of fragmented parts as a whole.

[0055] refer to Figure 4 and Figure 5 , Figure 4 It shows the left side schematic diagram of the connection between the tile hanging bar and the photovoltaic tile unit in the embodiment of the present invention; Figure 5 Shows Figure 4 An enlarged schematic diagram of

[0056] The tile hanging strips B are laid horizontally at intervals, and photovoltaic tile units A are installed at the intervals;

[0057] refer to Figure 6 , Figure 6 A schematic diagram of an explosion of a photovoltaic tile unit in an embodiment of the present invention is shown;

[0058] An upper edge frame 9, a lower edge frame 12 and a short edge frame 11 are arranged at the back edge of the glass 7, wherein:

[0059] The short edge frame 11 is arranged along any wide side of the glass 7, and adjacent photovoltaic tile units A are overlapped with each other through the short edge frame 11, so that the photovoltaic tile units A are laid flush on the tile hanging strips B along the length direction;

[0060] The upper edge frame 9 and the lower edge frame 12 are arranged along the two long sides of the glass 7 respectively, and the upper edge frame 9 and the lower edge frame 12 of adjacent photovoltaic tile units A are clamped to each other so that the photovoltaic tile units A are arranged inclined and stacked on the tile hanging strips B along the width direction.

[0061] refer to Figure 7 and Figure 8 , Figure 7 It shows a schematic diagram of the connection between the short edge frame and the photovoltaic tile unit in an embodiment of the present invention; Figure 8 It shows a schematic diagram of a short edge frame cross section in an embodiment of the present invention;

[0062] The cross section of the short edge frame 11 is in an upward shape, the first right side plane 11a is connected to the wide side of the glass 7, and the left side of the short edge frame 11 is bent upward to form a left side plane 11b of the same height as the right side plane 11a, which is used to overlap the wide sides of adjacent glass 7;

[0063] refer to Fig. 9 and Fig.10 , Fig. 9 It shows a schematic diagram of the upper frame cross section in an embodiment of the present invention; Fig.10 It shows a schematic diagram of the lower edge frame cross section in an embodiment of the present invention;

[0064] The cross-section of the upper edge frame 9 is in the shape of an upward letter "U", and the top end extends obliquely upward to form a slope 9b. The second right side plane 9a is connected to any long side of the glass 7. The cross-section of the lower edge frame 12 is in the shape of a U with an opening facing horizontally, and the top surface is connected to the other long side of the glass 7. The opening of the lower edge frame 12 of the adjacent glass 7 is engaged with the slope 9b, so that the photovoltaic tile unit A is arranged at an angle and laid on the tile hanging strip B in a stacked manner along the width direction.

[0065] The photovoltaic tile unit A also includes an isolation strip 5, which covers the busbar 6, which not only improves the aesthetics of the product front, but also avoids the problem in the prior art that the dark blue battery cells and the silver-white interconnection strips are matched to block the interconnection strips, which seriously affects the power generation efficiency of the product.

[0066] The photovoltaic tile unit A also includes tile hanging strip product information 13, which is attached to the back of the glass 7. The tile hanging strip product information 13 mainly includes information such as the product production ID serial number, the nameplate mainly reflecting the product manufacturing company information, electrical parameters, structural parameters and related certification information.

[0067] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An integrated assembled photovoltaic tile device, characterized in that: It comprises a plurality of photovoltaic tile units (A), and each photovoltaic tile unit (A) is provided with an assembly frame, which are assembled with each other and installed on a tile hanging strip (B); Each photovoltaic tile unit (A) comprises a plurality of solar cells (1), wherein the plurality of solar cells (1) are back-contact solar cells with grid lines integrated on the back and are distributed in a rectangular array; The positive and negative electrodes of adjacent battery cells (1) in each row are in contact with each other, and the backs are connected by interconnection strips (2). The half-cut battery cells (3) are stacked and welded, and connected in series to form n rows of long strip battery panels, where n≥2; The positive electrodes (4) of n rows of solar panels are collected at one end and connected in parallel, and the negative electrodes (8) at the other end are collected and connected in parallel, and are respectively led out by a busbar (6); The photovoltaic tile unit (A) also includes glass (7) for encapsulating n rows of solar panels and busbars (6); the surface of the glass (7) has a three-dimensional pattern that can form diffuse reflection, and a junction box (10) is arranged on the back, and the junction box (10) is connected to the busbar (6).

2. The integrated assembled photovoltaic tile device according to claim 1, characterized in that: The cell (1) is an N-type or P-type IBC back contact cell.

3. The integrated assembled photovoltaic tile device according to claim 1, characterized in that: The interconnection strip (2) is a photovoltaic interconnection strip.

4. The integrated assembled photovoltaic tile device according to claim 1, characterized in that: The junction box (10) is a backplane integrated junction box.

5. The integrated assembled photovoltaic tile device according to claim 1, characterized in that: The glass (7) is a rain flower pattern embossed glass, which is bonded to the outer surface of the battery panel by an adhesive film and is used to encapsulate the busbar (6) and the battery panel.

6. The integrated assembled photovoltaic tile device according to claim 1, characterized in that: The half-cut battery slice (3) is respectively formed by overlapping and welding the sliced ​​portions and chamfered portions of the half-cut battery slice (1).

7. The integrated assembled photovoltaic tile device according to claim 1, characterized in that: The tile hanging strips (B) are laid out in a transverse interval, and photovoltaic tile units (A) are installed at the intervals; An upper edge frame (9), a lower edge frame (12) and a short edge frame (11) are arranged at the back edge of the glass (7), wherein: The short edge frame (11) is arranged along any wide side of the glass (7), and adjacent photovoltaic tile units (A) are overlapped with each other through the short edge frame (11), so that the photovoltaic tile units (A) are laid flush on the tile hanging strip (B) along the length direction; The upper edge frame (9) and the lower edge frame (12) are respectively arranged along the two long sides of the glass (7), and the upper edge frames (9) and the lower edge frames (12) of adjacent photovoltaic tile units (A) are snap-fitted to each other, so that the photovoltaic tile units (A) are arranged obliquely and stacked on the tile hanging strips (B) in the width direction.

8. The integrated assembled photovoltaic tile device according to claim 7, characterized in that: The short edge frame (11) has an upward cross-section, a first right side plane (11a) connected to the wide side of the glass (7), and the left side of the short edge frame (11) is bent upward to form a left side plane (11b) of the same height as the right side plane (11a) for overlapping the wide sides of adjacent glass (7); The cross section of the upper frame (9) is in the shape of an upward letter "U", and the top end extends obliquely upward to form an inclined surface (9b); the second right plane (9a) is connected to any long side of the glass (7); the cross section of the lower frame (12) is in the shape of a U with an opening facing horizontally, and the top surface is connected to the other long side of the glass (7); the opening of the lower frame (12) of the adjacent glass (7) is snap-fitted with the inclined surface (9b), so that the photovoltaic tile unit (A) is arranged obliquely and laid on the tile hanging strip (B) in a stacked manner along the width direction.

9. The integrated assembled photovoltaic tile device according to claim 1, characterized in that: The photovoltaic tile unit (A) also includes an isolation strip (5) covering the busbar (6).

10. The integrated assembled photovoltaic tile device according to claim 1, characterized in that: The photovoltaic tile unit (A) also includes tile hanging strip product information (13), which is attached to the back of the glass (7).

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