CN208001247U - A kind of thermal diffusivity photovoltaic tile based on double-side solar cell - Google Patents

Abstract

The utility model discloses a kind of thermal diffusivity photovoltaic tile based on double-side solar cell, including photovoltaic tile ontology, photovoltaic tile ontology include the sunny slope glassy layer being from top to bottom cascading, cell encapsulant layers, opaco glassy layer and ceramic tile substrate;Two pieces of double-sided solar battery pieces using parallel-connection structure are enclosed in the cell encapsulant layers, there are multiple heat emission holes in horizontal array distribution inside ceramic tile substrate, the heat sink hole diameter is 2/3rds of ceramic tile substrate thickness, and the first half for the internal surface of hole that radiates is coated with projection layer, lower half is coated with lower reflecting layer.The utility model uses unique double-sided glass encapsulating structure, improves the solar energy composite utilization rate of battery itself, solves the problems, such as that the light utilization efficiency of photovoltaic tile is low.

Description

A heat dissipation photovoltaic tile based on double-sided solar cells

technical field

The utility model relates to the technical field of photovoltaic power generation, in particular to a heat dissipation photovoltaic tile based on double-sided solar cells.

Background technique

BIPV is the installation of photovoltaic systems on the outer surface of building structures to provide electricity. According to the different ways in which the photovoltaic system is combined with the building, building integrated photovoltaics can be divided into two categories: one is BAPV, that is, the photovoltaic system is attached to the outer surface of the building structure; the other is BIPV, that is, the photovoltaic system is integrated with the building. Embedded in building materials. Among them, BIPV can not only realize the basic function of photovoltaic power generation, but also take into account the basic requirements of the aesthetics and practicality of the building.

However, the existing BIPV products have the following deficiencies: on the one hand, the shape of double-sided photovoltaic modules is single, and the application range is limited; As the temperature rises, the power generation efficiency of the battery drops rapidly, which seriously affects the power generation performance and economic benefits of the photovoltaic system.

Utility model content

The purpose of the utility model is to provide a heat-dissipating photovoltaic tile based on double-sided solar cells, which has a unique double-sided glass encapsulation structure and can effectively improve the basic power of the photovoltaic tile body.

In order to achieve the above object, the technical solution of the utility model is:

A heat-dissipating photovoltaic tile based on double-sided solar cells, including a photovoltaic tile body, the photovoltaic tile body includes a sun-facing glass layer, a battery packaging layer, a back-sun glass layer and a ceramic tile substrate that are sequentially stacked from top to bottom; The battery packaging layer is wrapped with two parallel-connected double-sided solar cells, and the ceramic tile substrate has a plurality of heat dissipation holes distributed in a horizontal array, and the diameter of the heat dissipation holes is one-third of the thickness of the ceramic tile substrate. 2. The upper half of the inner surface of the cooling hole is coated with an upper projection layer, and the lower half is coated with a lower reflective layer; the middle part of the battery packaging layer is provided with a positive and negative separation junction box drawn from the inside of the double-sided solar cell The positive and negative lead wires of the junction box are inserted through the corresponding heat dissipation holes and lead out to be connected in series or in parallel with other photovoltaic tile bodies; the four corners of the ceramic tile substrate are provided with square gaps, and the photovoltaic tile body and the photovoltaic tile body are detachably spliced on the The matching tiles together are installed on the wall or roof of the building through the gap and the splicing unit, the matching tiles match the shape of the ceramic tile substrate, and the splicing unit includes a first connection arranged at one end of the ceramic tile substrate part and the second connecting part arranged at the corresponding end of the supporting tile; the first connecting part includes a plug-in buckle and a tenon, and the two plug-in buckles are respectively arranged above and below the tenon. The cross-section of the buckle is a dovetail structure, and the tenon has an arc-shaped part protruding from the outer edge. The second connecting part includes an insertion groove and a card groove. Above and below the card slot, the shape and position of the insertion slot match the insertion buckle, and the shape and position of the card slot match the insertion buckle.

Further, the sunny glass layer is made of 2mm coated glass.

Further, the back glass layer is made of 1mm tempered glass.

Further, the battery packaging layer is thermally cross-linked EVA and POE materials.

Further, the double-sided solar cells are HIT heterojunction double-sided cells.

Further, the upper projection layer inside the heat dissipation hole of the ceramic tile substrate is made of light-transmitting material, and the lower reflection layer is made of light-reflecting material.

Further, the plug-in buckle, the tenon and the ceramic tile substrate are integrally formed.

The beneficial effects of the utility model are;

The utility model is different from the traditional photovoltaic tile, and adopts double-sided solar cells and its unique double-sided glass encapsulation structure, which improves the basic power of the photovoltaic tile body and the comprehensive utilization rate of solar energy; the junction box adopts a positive and negative separation type, The positive and negative poles can be arranged at the two edges of the photovoltaic tile body, and the positive and negative lead wires of the junction box are inserted into the corresponding heat dissipation holes inside the ceramic tile substrate, which improves the flexibility of series and parallel connection with other photovoltaic tile bodies; By using ceramic tiles with multiple heat dissipation holes as the substrate, the heat dissipation capacity of the photovoltaic tile body is improved; the structure of double-sided solar cells connected in parallel avoids problems such as hot spots and power decline caused by the battery itself; through The way of splicing the photovoltaic tile body and the supporting tiles improves the flexibility of installation. At the same time, the insertion buckle and tenon cooperate with the corresponding insertion groove and card groove, which is convenient for installation and disassembly.

Description of drawings

Fig. 1 is a structural schematic diagram of a heat dissipation photovoltaic tile based on double-sided solar cells of the present invention.

Fig. 2 is a schematic diagram of the connection between the ceramic tile substrate and the matching tile in a heat dissipation photovoltaic tile based on double-sided solar cells of the present invention.

Fig. 3 is an implementation effect diagram of a heat-dissipating photovoltaic tile based on double-sided solar cells of the present invention.

The numbers in the drawings are: 1 is the glass layer on the sunny side, 2 is the battery packaging layer, 3 is the glass layer on the back side, 4 is the ceramic tile substrate, 5 is the double-sided solar cell, 6 is the cooling hole, and 7 is the upward projection Layer, 8 is the lower reflection layer, 9 is the junction box, 10 is the positive and negative leads, 11 is the supporting tile, 12 is the plug buckle, 13 is the tenon, 14 is the plug slot, and 15 is the card slot.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is further described:

As shown in Figures 1 to 3, a heat dissipation photovoltaic tile based on double-sided solar cells includes a photovoltaic tile body, and the photovoltaic tile body includes a sun-facing glass layer 1, a battery encapsulation layer 2, The back glass layer 3 and ceramic tile substrate 4; the sun glass layer 1 is made of 2mm coated glass, the back glass layer 3 is made of 1mm tempered glass, the battery packaging layer 2 is thermally cross-linked EVA and POE materials, and the battery packaging layer 2 There are two parallel-connected double-sided solar cells 5 in the inner package. The double-sided solar cells 5 are HIT heterojunction double-sided cells. The diameter of the hole 6 is two-thirds of the thickness of the ceramic tile substrate 4. The upper half of the inner surface of the heat dissipation hole 6 is coated with an upper projection layer 7, and the lower half is coated with a lower reflection layer 8. The inner surface of the heat dissipation hole 6 is coated with an upper projection layer 7. Light-transmitting materials are used, and the lower reflective layer 8 is made of reflective materials; the middle part of the battery packaging layer 2 is provided with a positive and negative separated junction box 9 drawn from the inside of the double-sided solar cell 5, and the positive and negative leads 10 of the junction box 9 are interspersed. Corresponding radiating holes 6 are drawn out to be connected in series or in parallel with other photovoltaic tile bodies; the four corners of the ceramic tile substrate 4 are provided with square gaps, and the photovoltaic tile body and the supporting tiles 11 detachably spliced together are connected through the gaps and splicing. The unit is installed on the wall or roof of the building, and the matching tile 11 matches the shape of the ceramic tile substrate 4. The splicing unit includes a first connecting part arranged at one end of the ceramic tile substrate 4 and a first connecting part arranged at the corresponding end of the matching tile 11. Two connecting parts; the first connecting part includes a plug-in buckle 12 and a tenon 13. There are two plug-in buckles 12 and they are respectively arranged above and below the tenon 13. The cross-section of the plug-in buckle 12 is a dovetail-shaped structure, and the clip The tenon 13 has an arc-shaped portion protruding from the outer edge. The insertion buckle 12, the tenon 13 and the ceramic tile substrate 4 are integrally formed. The second connection part includes an insertion groove 14 and a card groove 15. The insertion groove 14 There are two slots and they are respectively arranged above and below the slot 15 . The shape and position of the slot 14 match the buckle 12 , and the shape and position of the slot 15 match the buckle 12 .

The glass layer 1 on the sunny side of the utility model adopts 2mm coated glass, which has the characteristics of high light transmittance, anti-reflection and high strength. The use of this unique double-sided glass encapsulation structure improves the basic power of the photovoltaic tile body and the comprehensive utilization rate of solar energy; through the splicing of the photovoltaic tile body and the matching tile 11, the flexibility of installation is improved, and at the same time plugging The buckle 12 and tenon 13 cooperate with the corresponding insertion groove 14 and draw-in groove 15 to facilitate installation and disassembly.

The above-described embodiments are only preferred embodiments of the present utility model, and do not limit the scope of implementation of the present utility model, so all equivalent changes or changes made according to the structure, features and principles described in the patent scope of the present utility model Modifications should be included in the patent scope of the utility model application.

Claims (7)

1. A heat-dissipating photovoltaic tile based on double-sided solar cells, characterized in that it includes a photovoltaic tile body, and the photovoltaic tile body includes a sun-facing glass layer (1) and a battery packaging layer (2) that are stacked sequentially from top to bottom , glass layer (3) and ceramic tile substrate (4) on the back side; the battery packaging layer (2) is wrapped with two double-sided solar cells (5) in parallel structure, ceramic tile substrate (4) There are a plurality of heat dissipation holes (6) distributed in a horizontal array inside, the diameter of the heat dissipation holes (6) is two-thirds of the thickness of the ceramic tile substrate (4), and the upper half of the inner surface of the heat dissipation holes (6) is coated with There is an upper projection layer (7), and the lower half is coated with a lower reflective layer (8); the lower part of the battery packaging layer (2) is provided with a positive and negative electrode separation wiring drawn from the inside of the double-sided solar cell (5) box (9), the positive and negative lead wires (10) of the junction box (9) are inserted through the corresponding heat dissipation holes (6) and drawn out in series or in parallel with other photovoltaic tile bodies; the four corners of the ceramic tile substrate (4) Each has a square gap, and the photovoltaic tile body and the supporting tile (11) detachably spliced together are installed on the wall or roof of the building through the gap and the splicing unit, and the matching tile (11) and the ceramic tile base The shape of the sheet (4) matches, and the splicing unit includes a first connection part arranged at one end of the ceramic tile substrate (4) and a second connection part arranged at the corresponding end of the matching tile (11); the first connection The part includes a plug-in buckle (12) and a tenon (13). There are two plug-in buckles (12) and they are respectively arranged above and below the tenon (13). The cross-section is dovetail-shaped, the tenon (13) has an arc protruding from the outer edge, and the second connection part includes a slot (14) and a slot (15), and the slot (14) There are two slots (15) above and below the card slot (15), the shape and position of the insertion slot (14) matches the insertion buckle (12), and the shape and position of the card slot (15) match the insertion Buckle (12) matches. 2. The heat-dissipating photovoltaic tile based on double-sided solar cells according to claim 1, characterized in that 2mm coated glass is used for the sunny side glass layer (1). 3 . The heat dissipation photovoltaic tile based on double-sided solar cells according to claim 1 , characterized in that, the glass layer ( 3 ) on the back side is made of 1 mm toughened glass. 4 . 4. The heat-dissipating photovoltaic tile based on double-sided solar cells according to claim 1, characterized in that, the battery encapsulation layer (2) is thermally cross-linked EVA and POE materials. 5. The heat dissipation photovoltaic tile based on double-sided solar cells according to claim 1, characterized in that the double-sided solar cells (5) are HIT heterojunction double-sided cells. 6. A heat-dissipating photovoltaic tile based on double-sided solar cells according to claim 1, characterized in that the projection layer (7) inside the ceramic tile substrate (4) heat dissipation holes (6) adopts light-transmitting The material and the lower reflective layer (8) adopt reflective material. 7. A heat-dissipating photovoltaic tile based on double-sided solar cells according to claim 1, characterized in that the plug-in buckle (12), tenon (13) and the ceramic tile substrate (4) are integrated molding structure.