CN109509802B - Curved photovoltaic tile assembly and mounting structure thereof - Google Patents

Abstract

The invention discloses a curved photovoltaic tile assembly, which sequentially comprises the following components from top to bottom: the upper surface and the lower surface of the upper glass, the upper PVB adhesive film layer, the battery layer, the lower PVB adhesive film layer and the lower glass are arc-shaped curved surface structures protruding upwards, and the curvatures of the corresponding positions of the upper surface and the lower surface of the upper glass, the upper PVB adhesive film layer, the battery layer, the lower PVB adhesive film layer and the lower glass are consistent; the battery layer includes: a plurality of battery cells, adjacent battery cells are connected in an electrically conductive manner by interconnects and/or laminations, and the battery cells are cut from the battery cells. The photovoltaic tile assembly device is simple in structure, the maximized reasonable utilization of the area of the photovoltaic tile assembly is realized, and the photoelectric conversion efficiency of the photovoltaic tile assembly in unit area is improved.

Description

A kind of curved surface photovoltaic tile module and its installation structure

Technical field

The invention belongs to the field of solar photovoltaics, and specifically relates to a curved surface photovoltaic tile assembly and its installation structure.

Background technique

The effective and close integration of photovoltaic power generation and buildings has always been one of the hot topics in the industry. It mainly includes photovoltaic modules, curtain wall glass, photovoltaic tiles and other photovoltaic products integrated with buildings. Many designs have also appeared in the photovoltaic tile product industry, such as the flat-panel sun house roof design, which can replace the wave-shaped component design of traditional roof tiles. However, in order to meet the corrugated shape design of wave-shaped photovoltaic modules, a considerable part of the module area is usually lost and cannot be used to arrange crystalline silicon cells. It also reduces the photoelectric conversion efficiency per unit area of the photovoltaic tiles. Therefore, improving the photoelectric conversion efficiency of photovoltaic tiles is one of the key research topics in the industry.

Existing photovoltaic tile crystalline silicon modules have a serious waste of module area and cannot arrange crystalline silicon cells, resulting in low photoelectric conversion efficiency per unit area of photovoltaic tile modules, resulting in a waste of roof area and energy.

Contents of the invention

In order to solve the above technical problems, the present invention proposes a curved surface photovoltaic tile assembly and its installation structure.

In order to achieve the above objects, the technical solutions of the present invention are as follows:

A curved photovoltaic tile assembly, including from top to bottom: upper glass, upper PVB film layer, battery layer, lower PVB film layer and lower glass, and the upper glass, upper PVB film layer, battery layer, lower layer The upper and lower surfaces of the PVB film layer and the lower glass are all curved structures that protrude upward, and the curvatures of the corresponding positions of the upper glass, upper PVB film layer, battery layer, lower PVB film layer and the upper and lower surfaces of the lower glass are all consistent;

The battery layer includes: a plurality of battery flakes. Adjacent battery flakes are conductively connected through interconnectors and/or laminations. The battery flakes are cut from the battery flakes.

The invention discloses a curved surface photovoltaic tile assembly, which has a simple structure, maximizes the rational utilization of the area of the photovoltaic tile assembly, and improves the photoelectric conversion efficiency per unit area of the photovoltaic tile assembly.

PVB is used as the packaging material. Due to the curved surface design of the photovoltaic tiles, it cannot be laminated in a conventional photovoltaic laminator. The autoclave production process is applied to the production process of photovoltaic tiles to achieve the preparation of curved double-glass photovoltaic tiles.

On the basis of the above technical solutions, the following improvements can be made:

As a preferred solution, the thickness of the battery chip is 80-150um, and the width of the battery chip is 5-10mm.

Using the above-mentioned preferred solution, the existing battery sheet is cut into a width of about 5 to 10 mm, and then interconnectors and/or laminations are used for conductive connection to prepare the battery layer, so that the battery layer can be bent and deformed within a certain range. This meets the design of rigid curved surfaces of curved photovoltaic tiles. The battery layer uses thin sheet technology, and the thickness of the battery flakes is about 80μm-150μm, allowing the battery to be bent and deformed to a certain extent.

As a preferred solution, the thickness of the upper PVB adhesive film layer and the lower PVB adhesive film layer is 0.4 to 1 mm.

Using the above-mentioned preferred solution, PVB film is used as the encapsulating film of curved photovoltaic tiles with a thickness of 0.4 to 1mm, and the autoclave pressurization process is introduced to the photovoltaic industry to realize the lamination process of curved components.

As a preferred solution, there is a starting identification point at the starting end of the battery piece, a cutting identification point at the position to be cut of the battery piece, an end identification point at the end of the battery piece, the starting identification point, and the cutting identification point. Both point and end identification points have different structures.

Using the above preferred solution, it is convenient for the cutting equipment to identify the starting position, the position to be cut and the ending position of the battery wafer, thereby improving the cutting efficiency. The structures of the starting identification point, the cutting identification point and the ending identification point are all different. The identification point is mainly to prompt the cutting equipment to start preparation work, while the cutting identification point is to prompt the cutting equipment to start cutting, and the end identification point is mainly to prompt the cutting equipment to end the work and realize automatic cutting. The starting identification point, cutting identification point and end identification point can be circular, square, rectangular, oval or other shapes. After the cutting is completed, the starting identification point, cutting identification point and end identification point still exist, which facilitates automatic welding by later welding equipment.

As a preferred solution, the curvatures of the upper and lower surfaces of the upper glass, upper PVB adhesive film layer, battery layer, lower PVB adhesive film layer and lower glass gradually increase from the center to the outside.

Using the above-mentioned preferred solution, the center of the curved photovoltaic tile module is relatively gentle and the edges are relatively steep. This structure has good drainage and greatly increases the effective power generation area of the crystalline silicon module photovoltaic tiles, achieving high photoelectric conversion efficiency of the photovoltaic tiles.

As a preferred solution, the battery chip includes: a battery chip body, a first notch provided on the front edge of the battery chip body, and a second notch provided on the back edge of the battery chip body. The first notch and the second notch are provided respectively. at the opposite ends of the cell body.

Using the above-mentioned preferred solution, it is easy to stack adjacent battery pieces and weld each other, the welding effect is good, and the overall rigidity of the produced battery layer is good.

As a preferred solution, the longitudinal groove wall of the first groove and its transverse groove wall are arranged at an angle, that is, the longitudinal groove wall and its transverse groove wall of the first groove are arranged at an acute angle.

Using the above preferred solution, the longitudinal groove wall and the transverse groove wall are set at an acute angle. When adjacent battery chips are stacked, there is a certain gap at the bottom. This gap is convenient for filling of solder, and the solder will not overflow from the front of the battery sheet body. , the welding effect is good, and the made battery layer is more beautiful.

As a preferred solution, a plurality of granular block pattern units or planar pattern units are provided on the front side of the upper glass;

The pattern unit includes multiple continuous or non-continuous pattern blocks;

The pattern blocks include: a first pattern block, a second pattern block, a third pattern block, a fourth pattern block and a fifth pattern block;

The first pattern block is V-shaped and is arranged along the length direction of the upper glass;

The third pattern block is in the shape of an "eight" and is arranged above or below the first pattern block;

The second pattern block is disposed between the first pattern block and the third pattern block;

The fourth pattern block is arranged on both sides of the first pattern block, the fourth pattern block is connected to the first pattern block, and the height of the fourth pattern block is smaller than the first pattern block, the second pattern block and the third pattern block;

The fifth pattern block is arranged on both sides of the third pattern block, and the structure of the fifth pattern block is the same as that of the fourth pattern block.

Using the above preferred solution, the drainage effect is good.

A curved surface photovoltaic tile module installation structure, including:

Curved photovoltaic tile modules;

The upper surface of the heat dissipation substrate is connected to the curved photovoltaic tile assembly through a thermal conductive adhesive layer. The lower surface of the heat dissipation substrate is fixedly connected to the roof support beam through fixed pillars. The fixed pillars include a support part, a connecting part and a fixed part. The support part is On the edge of the supporting heat dissipation base plate, the fixing part is used to be fixedly connected to the roof support beam, the connecting part is used to connect the supporting part and the fixing part, and a triangular cavity is formed between the fixing pillar and the heat dissipation base plate.

The invention also discloses a curved surface photovoltaic tile module installation structure, which is simple in structure and convenient to install. A triangular cavity is formed between the fixed pillar and the heat dissipation substrate, which has better heat dissipation effect and improves the power generation efficiency of the curved surface photovoltaic tile.

As a preferred solution, the heat dissipation substrate includes: a heat dissipation part and a bottom connection part provided below the heat dissipation part. The upper and lower surfaces of the heat dissipation part are also upwardly protruding arc-shaped curved surface structures, and their curvature is consistent with the curvature of the corresponding position of the curved surface photovoltaic tile module. , the upper surface of the heat dissipation part is connected to the curved photovoltaic tile assembly through a thermal conductive adhesive layer;

The bottom connection part is a flat plate structure. The lower surface of the heat dissipation part and the upper surface of the bottom connection part form an arc-shaped cavity, and multiple heat dissipation strips are provided in the cavity. The spacing between adjacent heat dissipation strips is along the curved surface photovoltaic The middle of the tile assembly gradually increases toward both sides.

Using the above preferred solution, the heat dissipation effect is good.

Description of drawings

Figure 1 is an exploded view of a curved photovoltaic tile assembly provided by an embodiment of the present invention.

Figure 2 is a top view of a battery sheet provided by an embodiment of the present invention.

FIG. 3 is a schematic diagram of the connection structure of the battery chips provided by the embodiment of the present invention.

Figure 4 is a second schematic diagram of the connection structure of the battery chips provided by the embodiment of the present invention.

Figure 5 is a schematic diagram of the surface structure of the upper glass provided by the embodiment of the present invention.

Figure 6 is a schematic structural diagram of the installation structure of the curved photovoltaic tile module provided by the embodiment of the present invention.

Among them: 1 upper glass, 11 first pattern block, 12 second pattern block, 13 third pattern block, 14 fourth pattern block, 15 fifth pattern block;

2. Upper PVB film layer;

3 battery layer, 31 battery chips, 311 battery chip body, 312 first slot, 3121 longitudinal slot wall, 3122 transverse slot wall, 3123 gap, 313 second slot;

4. Lower PVB film layer;

5 lower glass;

6 battery block, 61 starting mark point, 62 cutting mark point, 63 ending mark point;

7 heat dissipation substrate, 71 heat dissipation part, 72 bottom connection part, 73 cavity, 74 heat dissipation strip;

8 thermal conductive adhesive layers;

9 fixed pillar, 91 supporting part, 92 connecting part, 93 fixed part;

10 roof support beams.

Detailed ways

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

In order to achieve the purpose of the present invention, in some embodiments of a curved photovoltaic tile assembly and its installation structure,

As shown in Figure 1, a curved photovoltaic tile module includes, from top to bottom: upper glass 1, upper PVB film layer 2, battery layer 3, lower PVB film layer 4 and lower glass 5, and the upper glass 1. The upper and lower surfaces of the upper PVB adhesive film layer 2, battery layer 3, lower PVB adhesive film layer 4 and lower glass 5 are all upwardly protruding arc-shaped surface structures, and the upper glass 1, upper PVB adhesive film layer 2, and battery layer 3. The curvatures of the corresponding positions on the upper and lower surfaces of the lower PVB film layer 4 and the lower glass 5 are consistent;

The battery layer 3 includes: a plurality of battery small pieces 31 . Adjacent battery small pieces 31 are conductively connected through interconnectors and/or laminations. The battery small pieces 31 are cut from the battery large piece 6 .

The invention discloses a curved surface photovoltaic tile assembly, which has a simple structure, maximizes the rational utilization of the area of the photovoltaic tile assembly, and improves the photoelectric conversion efficiency per unit area of the photovoltaic tile assembly.

PVB is used as the packaging material. Due to the curved surface design of the photovoltaic tiles, it cannot be laminated in a conventional photovoltaic laminator. The autoclave production process is applied to the production process of photovoltaic tiles to achieve the preparation of curved double-glass photovoltaic tiles.

The specific process of the autoclave pressurization process is as follows: first, the laminator pre-pressure hot melt process, and then the autoclave high-pressure process.

In order to further optimize the implementation effect of the present invention, in other embodiments, the remaining feature technologies are the same, except that the thickness of the battery chip 31 is 80-150um, and the width of the battery chip 31 is 5-10mm.

Using the above-mentioned preferred solution, the existing battery sheet 6 is cut into a width of about 5 to 10 mm, and then interconnectors and/or laminates are used for conductive connection to prepare the battery layer 3, so that the battery layer 3 can be bent within a certain range. and deformation to meet the rigid surface design of curved photovoltaic tiles. The battery layer 3 adopts thin sheet technology, and the thickness of the battery chip 31 is about 80 μm-150 μm, allowing the battery to be bent and deformed to a certain extent.

In order to further optimize the implementation effect of the present invention, in other embodiments, the remaining feature technologies are the same, except that the thickness of the upper PVB adhesive film layer 2 and the lower PVB adhesive film layer 4 is 0.4 to 1 mm.

Using the above preferred solution, PVB film is used as the encapsulating film of curved photovoltaic tiles with a thickness of 0.4-1mm, and the autoclave pressurization process is introduced to the photovoltaic industry to realize the lamination process of curved components.

As shown in Figure 2, in order to further optimize the implementation effect of the present invention, in other embodiments, the remaining feature technologies are the same. The difference is that a starting identification point 61 is provided at the starting end of the battery sheet 6. A cutting mark point 62 is provided at the position to be cut of the large battery piece 6, and an end mark point 63 is set at the end of the battery sheet 6. The structures of the start mark point 61, the cutting mark point 62 and the end mark point 63 are all different.

Adopting the above preferred solution facilitates the cutting equipment to identify the starting position, the position to be cut, and the ending position of the battery wafer 6, thereby improving cutting efficiency. The structures of the starting identification point 61, the cutting identification point 62, and the ending identification point 63 are all uniform. Differently, the starting identification point 61 is mainly to prompt the cutting equipment to start preparation work, while the cutting identification point 62 is to prompt the cutting equipment to start cutting, and the end identification point 63 is mainly to prompt the cutting equipment to end the work and realize automatic cutting. The starting identification point 61, the cutting identification point 62 and the ending identification point 63 may be circular, square, rectangular, oval or other shapes. After the cutting is completed, the start identification point 61, the cutting identification point 62 and the end identification point 63 still exist, which facilitates automatic welding by the later welding equipment.

In order to further optimize the implementation effect of the present invention, in other embodiments, the remaining feature technologies are the same, except that the upper glass 1, the upper PVB adhesive film layer 2, the battery layer 3, the lower PVB adhesive film layer 4 and the lower layer The curvatures of the upper and lower surfaces of the glass 5 gradually increase from the center to the outside.

Using the above-mentioned preferred solution, the center of the curved photovoltaic tile module is relatively gentle and the edges are relatively steep. This structure has good drainage and greatly increases the effective power generation area of the crystalline silicon module photovoltaic tiles, achieving high photoelectric conversion efficiency of the photovoltaic tiles.

As shown in Figure 3, in order to further optimize the implementation effect of the present invention, in other embodiments, the remaining feature technologies are the same, except that the battery chip 31 includes: a battery chip body 311, and is disposed on the front of the battery chip body 311. The first notch 312 on the edge and the second notch 313 provided on the back edge of the battery piece body 311. The first notch 312 and the second notch 313 are respectively provided on opposite ends of the battery piece body 311.

Using the above preferred solution, it is easy to stack and weld adjacent battery pieces 31 to each other, the welding effect is good, and the battery layer 3 produced has good overall rigidity.

As shown in FIG. 4 , further, the longitudinal groove wall 3121 of the first slot 312 and its transverse groove wall 3122 are arranged at an angle, that is, the longitudinal groove wall 3121 of the first slot 312 and its transverse groove wall 3122 are arranged at an acute angle.

Using the above preferred solution, the longitudinal groove wall 3121 and the transverse groove wall 3122 are arranged at an acute angle. When the adjacent battery chips 31 are stacked, there is a certain gap 3123 at the bottom. This gap 3123 is convenient for filling of solder, and the solder will not flow from the battery. The front side of the sheet body overflows, the welding effect is good, and the finished battery layer 3 is more beautiful.

As shown in Figure 5, in order to further optimize the implementation effect of the present invention, in other embodiments, the remaining feature technologies are the same, except that multiple granular block pattern units or planes are provided on the front of the upper glass 1 sexual pattern unit;

The pattern unit includes multiple continuous or non-continuous pattern blocks;

The pattern blocks include: first pattern block 11, second pattern block 12, third pattern block 13, fourth pattern block 14 and fifth pattern block 15;

The first pattern block 11 is V-shaped and is arranged along the length direction of the upper glass 1;

The third pattern block 13 is in the shape of an "eight" and is arranged above or below the first pattern block 11;

The second pattern block 12 is provided between the first pattern block 11 and the third pattern block 13;

The fourth pattern block 14 is arranged on both sides of the first pattern block 11. The fourth pattern block 14 is connected to the first pattern block 11. The height of the fourth pattern block 14 is smaller than the first pattern block 11, the second pattern block 12 and the third pattern block 11. pattern block 13;

The fifth pattern block 15 is disposed on both sides of the third pattern block 13 , and the structure of the fifth pattern block 15 is the same as that of the fourth pattern block 14 .

Using the above preferred solution, the drainage effect is good.

As shown in Figure 6, a curved photovoltaic tile module installation structure includes:

Curved photovoltaic tile modules;

The heat dissipation substrate 7, the upper surface of the heat dissipation substrate 7 is connected to the curved photovoltaic tile assembly through the thermal conductive adhesive layer 8, the lower surface of the heat dissipation substrate 7 is fixedly connected to the roof support beam 10 through the fixed pillar 9, the fixed pillar 9 includes a support part 91, a connection The supporting part 91 is used to support the edge of the heat dissipation substrate 7 , the fixing part 93 is used to be fixedly connected to the roof support beam 10 , the connecting part is used to connect the supporting part 91 and the fixing part 93 , and the fixing pillar 9 is A triangular cavity is formed between the heat dissipation substrates 7 .

The invention also discloses a curved surface photovoltaic tile module installation structure, which is simple in structure and convenient to install. A triangular cavity is formed between the fixed support 9 and the heat dissipation substrate 7, which has better heat dissipation effect and improves the power generation efficiency of the curved surface photovoltaic tile.

In order to further optimize the implementation effect of the present invention, in other embodiments, the remaining feature technologies are the same, except that the heat dissipation substrate 7 includes: a heat dissipation portion 71 and a bottom connection portion 72 disposed below the heat dissipation portion 71 . The upper and lower surfaces of 71 are also arc-shaped structures that protrude upward, and their curvature is consistent with the curvature of the corresponding position of the curved photovoltaic tile assembly. The upper surface of the heat dissipation part 71 is connected to the curved photovoltaic tile assembly through the thermal conductive adhesive layer 8;

The bottom connection part 72 has a flat plate structure. The lower surface of the heat dissipation part 71 and the upper surface of the bottom connection part 72 form an arc-shaped cavity 73, and a plurality of heat dissipation strips 74 are provided in the cavity 73. Adjacent heat dissipation strips The spacing of 74 gradually increases from the middle to both sides of the curved photovoltaic tile module.

Using the above preferred solution, the heat dissipation effect is good.

Regarding the preferred embodiments of the present invention, it should be pointed out that those of ordinary skill in the art can make several modifications and improvements without departing from the creative concept of the present invention, and these all fall within the protection scope of the present invention.

Claims (9)

1. The utility model provides a curved photovoltaic tile subassembly which characterized in that includes from top to bottom in proper order: the upper surface and the lower surface of the upper glass layer, the upper PVB adhesive film layer, the battery layer, the lower PVB adhesive film layer and the lower glass layer are arc-shaped curved surface structures protruding upwards, and the curvatures of the corresponding positions of the upper surface and the lower surface of the upper glass layer, the upper PVB adhesive film layer, the battery layer, the lower PVB adhesive film layer and the lower glass layer are consistent;

the battery layer includes: a plurality of battery cells, adjacent battery cells being conductively connected by interconnects and/or laminations, the battery cells being cut from a battery cell; the battery die includes: the battery piece body, set up in the first notch of battery piece body front edge and set up in the second notch of battery piece body back edge, first notch and second notch set up respectively in the relative both ends of battery piece body.

2. The curved photovoltaic tile assembly of claim 1, wherein the thickness of the cell tab is 80-150 um and the width of the cell tab is 5-10 mm.

3. The curved photovoltaic tile assembly of claim 1, wherein the upper PVB film layer and the lower PVB film layer have a thickness of 0.4 to 1mm.

4. The curved photovoltaic tile assembly according to claim 1, wherein a starting identification point is arranged at a starting end of the large battery piece, a cutting identification point is arranged at a position to be cut of the large battery piece, an ending identification point is arranged at an ending end of the large battery piece, and structures of the starting identification point, the cutting identification point and the ending identification point are different.

5. The curved photovoltaic tile assembly of claim 1, wherein the upper glass, upper PVB film layer, battery layer, lower PVB film layer, and lower glass each have a curvature that gradually increases from the center to the outside.

6. The curved photovoltaic tile assembly of claim 1, wherein the longitudinal channel walls of the first channel are disposed at an incline to the lateral channel walls thereof, i.e., the longitudinal channel walls of the first channel are disposed at an acute angle to the lateral channel walls thereof.

7. The curved photovoltaic tile assembly according to any one of claims 1-6, wherein a plurality of particle block or planeness pattern elements are provided on the front side of the upper glass;

the pattern unit comprises a plurality of continuous or discontinuous pattern blocks;

the block includes: a first block, a second block, a third block, a fourth block, and a fifth block;

the first pattern block is V-shaped and is arranged along the length direction of the upper glass;

the third pattern block is in an eight shape and is arranged above or below the first pattern block;

the second pattern block is arranged between the first pattern block and the third pattern block;

the fourth pattern block is arranged on two sides of the first pattern block, the fourth pattern block is connected with the first pattern block, and the height of the fourth pattern block is smaller than that of the first pattern block, the second pattern block and the third pattern block;

the fifth pattern block is arranged on two sides of the third pattern block, and the structure of the fifth pattern block is the same as that of the fourth pattern block.

8. A curved photovoltaic tile assembly mounting structure, comprising:

the curved photovoltaic tile assembly of any one of claims 1-7;

the heat dissipation base plate, the upper surface of heat dissipation base plate pass through the heat conduction glue film with curved surface formula photovoltaic tile subassembly is connected, the lower surface of heat dissipation base plate passes through fixed stay and roof supporting beam fixed connection, the fixed stay includes supporting part, connecting portion and fixed part, the supporting part is used for supporting the edge of heat dissipation base plate, the fixed part be used for with roof supporting beam fixed connection, connecting portion are used for connecting supporting part and fixed part, just the fixed stay with form the triangle cavity between the heat dissipation base plate.

9. The curved photovoltaic tile assembly mounting structure of claim 8, wherein the heat dissipating substrate comprises: the upper surface of the heat dissipation part is connected with the curved photovoltaic tile assembly through the heat conduction adhesive layer;

the bottom connecting portion is of a flat plate structure, an arc-shaped cavity is formed on the lower surface of the heat radiating portion and the upper surface of the bottom connecting portion, a plurality of heat radiating strips are arranged in the cavity, and the distance between every two adjacent heat radiating strips is gradually increased towards two sides along the middle of the curved photovoltaic tile assembly.