CN220067294U - Photovoltaic sandwich panel and photovoltaic component - Google Patents

Abstract

The application relates to a photovoltaic sandwich panel and a photovoltaic component, wherein the photovoltaic sandwich panel comprises a top tile, a bottom tile and an insulating layer, a first abutting part is arranged at one end of the bottom tile along the width direction of the photovoltaic sandwich panel, the first abutting part comprises a first abutting inclined plane, a second abutting part is arranged at the other end of the bottom tile, the second abutting part comprises a second abutting inclined plane, and the insulating layer is arranged between the top tile and the bottom tile along the thickness direction of the photovoltaic sandwich panel. When two photovoltaic sandwich panels are connected, the first abutting inclined plane of one photovoltaic sandwich panel can be in abutting fit with the second abutting inclined plane of the other photovoltaic sandwich panel. Along the thickness direction of the photovoltaic sandwich panel, the first abutting inclined plane is used for limiting the second abutting inclined plane to generate upward displacement so as to realize stable connection of two photovoltaic sandwich panels, thereby improving the installation stability of the plurality of photovoltaic sandwich panels when being connected with each other.

Description

Photovoltaic sandwich panel and photovoltaic component

Technical Field

The application relates to the technical field of photovoltaics, in particular to a photovoltaic sandwich panel and a photovoltaic component.

Background

Photovoltaic components are an important component of solar power plants for converting solar energy into electrical energy. The photovoltaic component comprises a plurality of photovoltaic sandwich panels and a plurality of photovoltaic modules mounted on the photovoltaic sandwich panels. The photovoltaic sandwich panel generally comprises an upper layer of color steel tile, a lower layer of color steel tile and a heat insulation inner core positioned between the two layers of color steel tiles, so that the photovoltaic sandwich panel has the characteristics of heat preservation, heat insulation, sound insulation, water resistance, light weight, environmental protection and the like. However, in the prior art, the connection and matching structure between two adjacent photovoltaic sandwich panels is not stable enough, so that the overall installation stability of the photovoltaic component is not enough.

Disclosure of Invention

The utility model provides a photovoltaic sandwich panel and a photovoltaic component, which can improve the stability of two adjacent photovoltaic sandwich panels when being connected.

A first aspect of the utility model provides a photovoltaic sandwich panel comprising:

a roof tile;

the photovoltaic sandwich panel comprises a bottom tile, wherein a first abutting part is arranged at one end of the bottom tile along the width direction of the photovoltaic sandwich panel, the first abutting part comprises a first abutting inclined plane, a second abutting part is arranged at the other end of the bottom tile, and the second abutting part comprises a second abutting inclined plane;

the heat preservation layer is arranged between the top tile and the bottom tile along the thickness direction of the photovoltaic sandwich panel;

when two photovoltaic sandwich panels are connected, the first abutting inclined surface of one photovoltaic sandwich panel can be in abutting fit with the second abutting inclined surface of the other photovoltaic sandwich panel.

In one possible design, the first abutment ramp and the second abutment ramp each extend in a third direction; an included angle alpha is formed between the third direction and the width direction of the photovoltaic sandwich panel, and the included angle alpha meets the following conditions: alpha is more than or equal to 30 degrees and less than or equal to 80 degrees.

In one possible design, the bottom tile further comprises a bottom plate, the first abutment and the second abutment are respectively located at two sides of the bottom plate along the width direction of the photovoltaic sandwich panel; the first abutting part further comprises a first abutting plane extending along the thickness direction of the photovoltaic sandwich panel, and two ends of the first abutting plane are respectively connected with the bottom plate and the first abutting inclined plane; the second abutting part further comprises a second abutting plane extending along the thickness direction of the photovoltaic sandwich panel, and two ends of the second abutting plane are respectively connected with the bottom plate and the second abutting inclined plane; when two photovoltaic sandwich panels are connected, the first abutment plane of one of the photovoltaic sandwich panels can be in abutment fit with the second abutment plane of the other photovoltaic sandwich panel.

In one possible design, the bottom tile is further provided with an extension extending towards the outside of the photovoltaic sandwich panel with respect to the top tile in the width direction of the photovoltaic sandwich panel, the extension being connected to the first abutment ramp; the bottom tile is further provided with an inward folded part which extends towards the inner side of the photovoltaic sandwich panel relative to the top tile along the width direction of the photovoltaic sandwich panel so as to form an avoidance space, and the inward folded part is connected with the second abutting inclined plane; when the first abutting inclined plane abuts against the second abutting inclined plane, the extension part can be accommodated in the avoidance space.

In one possible design, male ribs and female ribs are respectively arranged at two ends of the top tile along the width direction of the photovoltaic sandwich panel; when two photovoltaic sandwich panels are connected, the male rib of one photovoltaic sandwich panel is fixedly connected with the female rib of the other photovoltaic sandwich panel.

In one possible design, the roof tile further comprises a top plate, the male ribs and the female ribs being located on both sides of the top plate in the width direction of the photovoltaic sandwich panel, respectively; the top plate is provided with an angular relief portion which protrudes in the thickness direction of the photovoltaic sandwich plate towards a direction away from the bottom tile.

A second aspect of the present application provides a photovoltaic member comprising:

the photovoltaic sandwich panels are the photovoltaic sandwich panels;

the photovoltaic modules are fixed with the photovoltaic sandwich panel through clamps or glue.

In one possible design, the male rib of one photovoltaic sandwich panel is fixedly connected with the female rib of an adjacent photovoltaic sandwich panel and forms a lockstitch; the photovoltaic component further comprises a serging support, one end of the serging support is fixedly connected with the serging, and the other end of the serging support is fixedly connected with the outer extension portion through a fastener along the thickness direction of the photovoltaic sandwich panel.

In one possible design, the photovoltaic member further comprises a thermal insulation spacer secured between the lockstitch bracket and the outer extension by the fastener.

In one possible design, the material of the insulation blanket is one of ethylene propylene diene monomer rubber, nitrile rubber, fluororubber, asbestos rubber, graphite, ethylene propylene rubber, polyurethane, polyimide, polypropylene, polyethylene, polytetrafluoroethylene, and nylon 66+25% glass fiber.

According to the application, the first abutting inclined plane and the second abutting inclined plane are mutually parallel, when two photovoltaic sandwich panels are connected, the first abutting inclined plane of one photovoltaic sandwich panel can abut against the second abutting inclined plane of the other photovoltaic sandwich panel, and the first abutting inclined plane is used for limiting the second abutting inclined plane to generate upward displacement along the thickness direction of the photovoltaic sandwich panels so as to realize stable connection of the two photovoltaic sandwich panels, thereby improving the installation stability when the plurality of photovoltaic sandwich panels are connected with each other.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application as claimed.

Drawings

Fig. 1 is a schematic cross-sectional structure of a photovoltaic sandwich panel provided by the application;

FIG. 2 is a schematic cross-sectional view of a portion of the structure of FIG. 1;

FIG. 3 is a schematic cross-sectional view of the roof tile of FIG. 1;

FIG. 4 is a schematic cross-sectional view of the bottom shoe of FIG. 1;

FIG. 5 is a schematic cross-sectional view of a photovoltaic device according to the present application;

FIG. 6 is an enlarged view of portion A of FIG. 5;

fig. 7 is a flowchart of a method for manufacturing a photovoltaic sandwich panel according to the present application;

fig. 8 is a flowchart of a method for manufacturing a photovoltaic sandwich panel provided by the application;

fig. 9 is a flowchart of a method for manufacturing a photovoltaic sandwich panel provided by the application;

fig. 10 is an enlarged view of a portion B in fig. 5.

Reference numerals:

10-a photovoltaic sandwich panel;

101-a first installation space;

102-a second installation space;

20-a photovoltaic module;

30-clamping;

1-roof tile;

11-top plate;

111-a main body;

111 a-a first boss;

112-corner relief;

12-male ribs;

13-female ribs;

14-serging;

15-a bending part;

151-first bend;

152-a second bend;

2-a bottom tile;

21-a bottom plate;

211-a second boss;

22-a first abutment;

221-a first abutment ramp;

222-a first abutment plane;

23-a second abutment;

231-a second abutment ramp;

232-a second abutment plane;

24-extension;

241-first extension;

242-second epitaxial portions;

25-an inward fold;

251-first fold-in portion;

252-second fold-in portion;

26-avoidance space;

3-an insulating layer;

31-a first heat retaining portion;

32-a second insulation part;

33-a third heat preservation part;

34-a fourth insulation part;

4-a seal;

5-serging brackets;

6-fastening pieces;

7-heat insulation gaskets.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.

Detailed Description

For a better understanding of the technical solution of the present application, the following detailed description of the embodiments of the present application refers to the accompanying drawings.

It should be understood that the described embodiments are merely some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The terminology used in the embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

It should be noted that, the terms "upper", "lower", "left", "right", and the like in the embodiments of the present application are described in terms of the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In the context of this document, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on the other element or be indirectly on the other element through intervening elements.

An embodiment of the present application provides a photovoltaic sandwich panel 10, as shown in fig. 1 and 2, the photovoltaic sandwich panel 10 includes a top tile 1, a bottom tile 2, and an insulation layer 3. The roof tile 1 includes a roof panel 11 and male ribs 12 and female ribs 13 located on both sides of the roof panel 11, respectively, along a width direction X of the photovoltaic sandwich panel 10, and a first installation space 101 is formed between a main body portion 111 of the roof panel 11 and the floor tile 2 along a thickness direction X of the photovoltaic sandwich panel 10. The heat preservation 3 sets up between top tile 1 and bottom tile 2, and heat preservation 3 includes first heat preservation portion 31, and first heat preservation portion 31 is located first installation space 101. The material of the first heat preservation portion 31 is one of rock wool, glass silk floss, mineral wool board, honeycomb paper and phenolic foam board, the width of the first heat preservation portion 31 is D1 along the width direction of the photovoltaic sandwich board 10, the width of the heat preservation layer 3 is D2, and D1:D2 satisfies 0< D1:D2 less than or equal to 0.8.

The top tile 1 and the bottom tile 2 are two color steel tiles with different structures, and the heat preservation layer 3 is arranged between the top tile 1 and the bottom tile 2 and is used for realizing the heat preservation and heat insulation functions of the photovoltaic sandwich panel 10. Specifically, as shown in fig. 2, the top plate 11 of the top tile 1 extends horizontally along the width direction X of the photovoltaic sandwich panel 10, the male rib 12 and the female rib 13 each extend upward along the thickness direction Z of the photovoltaic sandwich panel 10, as shown in fig. 3, the male rib 12 and the female rib 13 each are provided with a bending portion 15, the bending portion 15 includes a first bending portion 151 and a second bending portion 152, one end of the second bending portion 152 is connected with the first bending portion 151, and the other end is connected with the top plate 11, that is, the male rib 12 and the female rib 13 are both in a bent irregular structure. Therefore, in the thickness direction Z of the photovoltaic sandwich panel 10, a first installation space 101 (a portion indicated by a broken line in fig. 2) having a regular boundary shape can be formed between the top plate 11 and the bottom tile 2, and spaces having irregular boundary shapes are formed between the male rib 12 and the bottom tile 12 and between the female rib 13 and the top tile 12.

In this embodiment, the first heat-preserving part 31 is made of one material selected from rock wool, glass silk floss, mineral wool board, honeycomb paper and phenolic foam board. The rock wool is a platy material with regular shape, which is prepared by taking high-quality basalt, dolomite and the like as main raw materials, melting the materials at a high temperature of over 1450 ℃, adopting high-speed centrifugation to form fibers, spraying a certain amount of binder and hydrophobizing agent, collecting the fibers through a cotton collecting machine, spreading the fibers through a pendulum method process, and solidifying and cutting the fibers after a three-dimensional method is added; glass floss is a platy material with regular shape, which is prepared by melting minerals such as lime, quartz powder and the like in a melting furnace, then carrying out high-speed centrifugation or spray-making, drawing to obtain artificial inorganic fibers with the diameter of less than 6 mu m, and then carrying out forming equipment; mineral wool board is a plate-shaped material with regular shape which is processed by taking mineral fiber cotton as a main raw material, adding a proper amount of additive, and carrying out procedures of batching, forming, drying, cutting, embossing, facing and the like; the honeycomb paper is manufactured according to the principle of a natural honeycomb structure, corrugated base paper is connected into a plurality of hollow three-dimensional regular hexagons by an adhesive method to form an integral stressed piece, namely a paper core, and the two sides of the paper core are adhered with facial tissues to form a novel environment-friendly energy-saving material with a sandwich structure, and the honeycomb paper is in a regular plate shape and is made of renewable flexible paper cores and facial tissues, so that the honeycomb paper has good toughness and rebound resilience; the phenolic foam board is a new generation of heat-insulating, fireproof and sound-insulating material and is also a plate-shaped material with regular shape. Besides being plate-shaped materials with regular shapes, the materials have low heat conductivity, good heat preservation and heat insulation effects, incombustible performances and fireproof requirements of building design, and besides, the materials have the advantages of light weight, stable structure, difficult deformation and difficult aging of chemical properties, are suitable for the heat preservation layer 3 of the photovoltaic sandwich panel 10, can ensure the heat preservation and heat insulation effects of the photovoltaic sandwich panel 10, lighten the overall weight of the photovoltaic sandwich panel 10, facilitate installation, and simultaneously are beneficial to prolonging the service life of the photovoltaic sandwich panel 10 and reduce maintenance cost.

In order to ensure that the photovoltaic sandwich panel 10 has a better heat preservation and insulation effect, the top tile 1 and the bottom tile 2 should be filled with heat preservation materials with no gaps as much as possible. Since the materials of the first heat preservation parts 31 are all regular plate-shaped structures, in order to achieve the effect of no gaps, the first heat preservation parts 31 should be disposed in the first installation space 101 having regular boundaries, but cannot be disposed beyond the range of the first installation space 101. Specifically, as shown in fig. 1, the width of the first heat-insulating portion 31 is D1, the width of the heat-insulating layer 3 is D2, and D1:d2 should satisfy 0< D1:d2.ltoreq.0.8, and specifically may be 0.1, 0.15, 0.3, 0.45, 0.6 or 0.8, or may be other values within the above range, which is not limited in this embodiment. Since the width D2 of the insulating layer 3 is a fixed value, when D1: when the value of D2 is too large (for example, greater than 0.8), the width D1 of the first heat-retaining portion 31 is too large, exceeding the dimension of the top plate 11 in the width direction X of the photovoltaic sandwich panel 10, so that the edge of the first heat-retaining portion 31 exceeds the range of the first installation space 101 and reaches the space formed by the male rib 12 and the bottom tile 2 or the space formed by the female rib and the bottom tile 2. Because the space between the male rib 12 and the bottom tile 12 and the space between the female rib 13 and the top tile 12 are irregular in boundary shape, and the material of the first heat insulation part 31 with regular shape is inconvenient to set, even if the regular-shape plates are installed in the space between the male rib 12 and the bottom tile 12 or between the female rib 13 and the top tile 12, the shapes of the top tile 1 and the bottom tile 2 cannot be completely attached, a certain gap can be generated, the gap cannot be kept between the top tile 1 and the bottom tile 2, the effect of filling the heat insulation material is not achieved, and the heat insulation effect of the photovoltaic sandwich panel 10 is affected, so that the value of D1:D2 is required to meet 0< D1:D2 less than or equal to 0.8.

Specifically, the width D1 of the first heat retaining portion 31 satisfies: 0mm < D1 is not more than 678.1mm, specifically, 0.5mm, 20mm, 80mm, 190mm, 200mm, 260mm, 350mm, 470mm, 560mm, 650mm or 678.1mm, and other values within the above range are also possible.

According to the photovoltaic sandwich panel 10 provided by the application, the material and the installation position of the first heat preservation part 31 are selected, and the ratio of the width D1 of the first heat preservation part 31 to the width D2 of the heat preservation layer 3 is limited, so that the heat preservation and insulation effect of the photovoltaic sandwich panel 10 can be optimized, and the photovoltaic sandwich panel 10 can be suitable for buildings with high heat preservation and insulation requirements: such as houses in cold areas, animal husbandry or buildings in farms, etc.

In a specific embodiment, as shown in fig. 1, the insulating layer 3 further includes a second insulating portion 32 and a third insulating portion 33, and the second insulating portion 32 and the third insulating portion 33 are respectively located at two sides of the first insulating portion 31 along the width direction X of the photovoltaic sandwich panel 10.

After the first heat preservation portion 31 is set, the second heat preservation portion 32 and the third heat preservation portion 33 may be respectively set on two sides of the first heat preservation portion 31, so that the heat preservation layer 3 fills the space between the top tile 1 and the bottom tile 2, where the first heat preservation portion 31 is not set, thereby ensuring the heat preservation and insulation effect of the photovoltaic sandwich panel 10, and meanwhile, the second heat preservation portion 32 and the third heat preservation portion 33 can limit the first heat preservation portion 31 in the width direction X of the photovoltaic sandwich panel 10.

Specifically, the materials of the first heat preservation portion 31 and the third heat preservation portion 33 are foamed polyurethane.

The foaming polyurethane can fill the irregularly-shaped space between the top tile 1 and the bottom tile 2, and ensure that no gap exists between the second heat preservation part 32 and the third heat preservation part 33 and the top tile 1 and the bottom tile 2, thereby improving the heat preservation and heat insulation effect and the waterproof effect of the photovoltaic sandwich panel. After the foaming polyurethane is molded, the foaming polyurethane has good structural stability, also has the advantages of heat insulation, sound insulation, shock resistance, gas protection and the like, and the cost of the foaming polyurethane material is relatively low, so that the total cost of the photovoltaic sandwich panel 10 is reduced.

It should be noted that the first heat-preserving portion 31 may be formed of a plate (one of a rock wool plate, a glass wool plate, a mineral wool plate, a honeycomb cardboard, and a phenolic foam plate) having a size corresponding to the size of the first installation space 101 in one piece, that is, the first heat-preserving portion 31 may fill the entire first installation space 101 (d1:d2=0.8). At this time, the second heat-insulating portion 32 is disposed at a position between the female rib 13 and the bottom tile 2, and the third heat-insulating portion 33 is disposed at a position between the male rib 12 and the bottom tile 2. Alternatively, the first heat retaining portion 31 may be formed by combining a plurality of small-sized plates (one of rock wool plates, glass wool plates, mineral wool plates, honeycomb cardboard, and phenolic foam plates), and the plurality of small-sized plates may collectively fill the first installation space 101 (d1:d2=0.8), or may fill only a part of the first installation space 101 (d1:d2 < 0.8), and the remaining part of the first installation space 101 is filled with the first heat retaining portion 31 and the third heat retaining portion 33. At this time, the second heat preservation part 32 is disposed at a space between the female rib 13 and the bottom tile 2, and a space located at the left side of the first heat preservation part 31 in the first installation space 101; the third heat preservation part 33 is disposed at a position that is a space between the male rib 12 and the bottom tile 2 and a space located on the right side of the first heat preservation part 31 in the first installation space 101. That is, the width dimensions of the second heat preservation part 32 and the third heat preservation part 33 in the width direction X of the photovoltaic sandwich panel 10 need to be determined according to the width D1 of the first heat preservation part 31 and the installation position thereof in the first installation space 101, and the present application does not limit the width dimensions of the second heat preservation part 32 and the third heat preservation part 33.

In a specific embodiment, as shown in FIG. 1, the thickness of the first heat preservation part 31 is H1, 50 mm.ltoreq.H2.ltoreq.150 mm in the thickness direction X of the photovoltaic sandwich panel 10. H1 may be 50mm, 80mm, 100mm, 120mm, 145mm or 150mm, or may be any other value within the above range, and this embodiment is not limited thereto.

When the thickness H1 of the first heat preservation portion 31 is too small (for example, less than 50 mm), the overall thickness of the heat preservation layer 3 is too small, so that the heat preservation and insulation effect of the photovoltaic sandwich panel 10 is affected; when the thickness H1 of the first heat preservation portion 31 is too large (e.g., greater than 150 mm), the overall thickness of the heat preservation layer 3 is too large, which results in the overall thickness of the photovoltaic sandwich panel 10 being too large, increasing the weight and manufacturing cost of the photovoltaic sandwich panel 10, but not obvious improvement of the heat preservation and heat insulation effect. Therefore, the thickness H1 of the first heat-insulating portion 31 should be 50mm to 150mm, so that the heat-insulating effect of the photovoltaic sandwich panel 10 can be ensured, and the weight and the manufacturing cost of the photovoltaic sandwich panel 10 can be properly reduced.

In a specific embodiment, as shown in fig. 3, the top plate 11 further includes an angular portion 112, where the angular portion 112 and the main body 111 are integrally formed, and the angular portion 112 protrudes in a direction away from the bottom tile 2 along a thickness direction Z of the photovoltaic sandwich panel 10.

The angle relief part 112 and the main body part 111 integrated into one piece make, and angle relief part 112 is used for being connected or clearance fit with photovoltaic module 20, and when photovoltaic module 20 receives along the decurrent external force of thickness direction Z of photovoltaic battenboard 10 or thermal expansion, angle relief part 112 can be to photovoltaic module 20 its supporting role, avoids photovoltaic module 20 to take place great displacement along thickness direction Z of photovoltaic battenboard 10 to the risk that photovoltaic module 20 breaks or breaks has been reduced. As shown in fig. 2, the top of the corner 112 has a planar structure, so that breakage of the photovoltaic module 20 at the contact point with the corner 112 due to stress concentration can be avoided.

In a specific embodiment, as shown in fig. 1 and 2, the corner portion 112 and at least one of the first heat preservation portion 31, the second heat preservation portion 32 and the third heat preservation portion 33 enclose a second installation space 102, the heat preservation layer 3 further includes a fourth heat preservation portion 34, the fourth heat preservation portion 34 is disposed in the second installation space 102, and the fourth heat preservation portion 34 is made of foamed polyurethane.

Since the corner portion 112 has an irregular bent structure, the second installation space 102 surrounded by the corner portion 112 and at least one of the first heat-insulating portion 31, the second heat-insulating portion 32, and the third heat-insulating portion 33 is also a space having an irregular boundary shape, and the fourth heat-insulating portion 34 is used to fill the second installation space 102, so that the material of the fourth heat-insulating portion 34 is the same as the second heat-insulating portion 32 and the third heat-insulating portion 33, and a foamable polyurethane material capable of filling gaps is used.

As shown in fig. 3, the dimension H2 of the corner 112 in the thickness direction Z of the photovoltaic sandwich panel 10 satisfies: h2 is 45mm or less and 48mm or less, specifically 45mm, 45.3mm, 46mm, 46.8mm, 47mm, 47.5mm or 48mm, or other values within the above range are not limited in this embodiment.

When the dimension H2 of the corner relief 112 is too small (for example, less than 45 mm), after the photovoltaic module 20 is mounted on the photovoltaic sandwich panel 10, the distance between the corner relief 112 and the photovoltaic module 20 is too large, so that support cannot be provided for the photovoltaic module 20, and when the photovoltaic module 20 receives an external force along the thickness direction Z of the photovoltaic sandwich panel 10, the photovoltaic module 20 is caused to deform greatly, so that the risk of deformation and fracture of the photovoltaic module 20 is increased; when the dimension H2 of the corner slack portion 112 is too large (for example, greater than 48 mm), after the photovoltaic module 20 is mounted on the photovoltaic sandwich panel 10, the distance between the corner slack portion 112 and the photovoltaic module 20 is too small, and under the influence of factors such as processing errors and mounting errors, there is a risk that the photovoltaic module 20 interferes with the corner slack portion 112, that is, there is a risk that the corner slack portion 112 jacks up the photovoltaic module 20 upward along the thickness direction Z of the photovoltaic sandwich panel 10, so that the risk of damage to the photovoltaic module 20 is increased.

Therefore, when the dimension H2 of the corner relief portion 112 is 45mm to 48mm, after the photovoltaic module 20 is mounted on the photovoltaic sandwich panel 10, if the photovoltaic module 20 is subjected to the pressure in the thickness direction Z of the photovoltaic sandwich panel 10, the corner relief portion 112 can abut against the photovoltaic module 20, that is, the corner relief portion 112 can support the photovoltaic module 20, so that the risk of damage to the photovoltaic module 20 is reduced, and the service life of the photovoltaic module 20 is prolonged.

In a specific embodiment, as shown in fig. 3 and 4, the main body portion 111 is provided with first protruding portions 111a, the plurality of first protruding portions 111a are disposed at intervals in the width direction X of the photovoltaic sandwich panel 10, the bottom tile 2 includes a bottom plate 21, the bottom plate 21 is provided with second protruding portions 211, the plurality of second protruding portions 211 are disposed at intervals in the width direction X of the photovoltaic sandwich panel 10, and the first protruding portions 111a and the second protruding portions 211 are each protruding in the thickness direction Z of the photovoltaic sandwich panel 10 toward a direction approaching the corner 112.

The first protruding portion 111a is provided to increase the rigidity of the top tile 1, and the second protruding portion 211 is provided to increase the rigidity of the bottom tile 2, so that the top tile 1 and the bottom tile 2 can better resist external force, avoid deformation failure, and further enable the photovoltaic sandwich panel 10 to have stronger bearing capacity.

As shown in fig. 2, the portion of the main body 111 where the first protruding portion 111a is not provided forms a groove structure with respect to the first protruding portion 111a, which can play a role of a drainage groove and can prevent the accumulated water from damaging the photovoltaic sandwich panel 10.

In addition, the first protruding portion 111a protrudes towards the direction away from the heat insulation layer 3, a certain gap is formed between the first protruding portion 111a and the heat insulation layer 3, an air layer can be formed, the heat transfer coefficient of the photovoltaic sandwich panel 10 can be reduced, and therefore the heat insulation performance of the photovoltaic sandwich panel 10 is improved. Similarly, the second protruding portion 211 protrudes towards the direction close to the heat insulation layer 3, a certain gap is formed between the part, on which the second protruding portion is not arranged, of the bottom plate 21 and the heat insulation layer 3, an air layer can be formed, the heat transfer coefficient of the photovoltaic sandwich panel 10 can be reduced, and accordingly the heat insulation performance of the photovoltaic sandwich panel 10 is improved.

Specifically, as shown in fig. 3, in the width direction X of the photovoltaic sandwich panel 10, the distance L1 between the midpoints of the adjacent two first protrusions 111a satisfies: l1 is 115mm or less and 118mm or less, and can be 115mm, 115.3mm, 116mm, 116.8mm, 117mm or 118mm.

When the distance L1 between the midpoints of two adjacent first protruding portions 111a is 115mm to 118mm, the drainage effect of the roof tile 1 can be ensured, damage to the photovoltaic sandwich panel 10 caused by accumulated water is avoided, and the volume of an air layer formed between the first protruding portions 111a and the heat insulation layer 3 is ensured to be large enough, so that the heat insulation performance of the photovoltaic sandwich panel 10 is improved, meanwhile, the structural strength and rigidity of the roof tile 1 are not influenced, and the installation of the heat insulation layer 3 is not influenced.

As shown in fig. 4, in the width direction X of the photovoltaic sandwich panel 10, the distance L2 between the midpoints of the adjacent two second protrusions 211 satisfies: l2 is 103mm or less and 107mm or less, and specifically can be 103mm, 104.5mm, 105mm, 105.8mm, 106mm or 107mm.

When the distance L2 between the midpoints of two adjacent second protruding portions 211 is 103 mm-107 mm, the drainage effect of the bottom tile 2 can be ensured, damage to the photovoltaic sandwich panel 10 caused by accumulated water is avoided, and the volume of an air layer formed between the second protruding portions 211 and the heat insulation layer 3 is ensured to be large enough, so that the heat insulation performance of the photovoltaic sandwich panel 10 is improved, meanwhile, the structural strength and rigidity of the bottom tile 2 are not influenced, and the installation of the heat insulation layer 3 is not influenced.

In a specific embodiment, as shown in fig. 1, along the width direction X of the photovoltaic sandwich panel 10, both sides of the heat insulation layer 3 are connected with sealing members 4, and along the thickness direction Z of the photovoltaic sandwich panel 10, one end of each sealing member 4 is fixedly connected with the top tile 1, and the other end is fixedly connected with the bottom tile 2.

The sealing piece 4 is arranged on two sides of the photovoltaic sandwich boards 10 along the width direction X, when the two photovoltaic sandwich boards 10 are connected, the sealing piece 4 can fill gaps between the two photovoltaic sandwich boards 10 so as to improve the air tightness of the connection part of the two photovoltaic sandwich boards 10 and be beneficial to improving the heat preservation and heat insulation effects of the photovoltaic components.

Specifically, the material of the sealing member 4 is one of Ethylene Propylene diene monomer (Ethylene-Propylene-Diene Monomer EPDM), polyurethane (Polyurethane PU), nitrile rubber (Nitrile Butadiene Rubber NBR), fluororubber (fluorouber FPM), silicone rubber (Silicone Rubber SIL), polyethylene (Polyethylene PE), neoprene (Chloroprene Rubber CR), acrylic ester (Phthalic Diglycol Diacrylate PDDA), polyolefin (Polyethylene PO), and Ethylene-vinyl acetate copolymer (Ethylene-Vinyl Acetate Copolymer EVA). The above materials are all provided with a certain elasticity so that the sealing element 4 can be compressed, and when the two photovoltaic sandwich panels 10 are connected, the sealing elements 4 on the two photovoltaic sandwich panels 10 can be mutually pressed, thereby ensuring that the gap is filled. In addition, the materials have good heat preservation, heat insulation and sound insulation effects, and also have dampproof and corrosion-resistant capabilities, so that the service life of the sealing element 4 is prolonged.

As shown in fig. 1, along the width direction X of the photovoltaic sandwich panel 10, the dimension D3 of the sealing member 4 satisfies: d3 is not less than 0.2mm and not more than 5mm, specifically, may be 0.2mm, 0.5mm, 1mm, 1.5mm, 2mm, 3mm or 5mm, and may be other values within the above range, which is not limited in this embodiment.

When the dimension D3 of the sealing member 4 is too small (for example, smaller than 0.2 mm), the sealing member 4 cannot fill up the gap between two adjacent photovoltaic sandwich panels 10, and the heat insulation effect of the photovoltaic components is affected; when the dimension D3 of the sealing member 4 is too large (for example, greater than 5 mm), the dimension of the sealing member 4 in the width direction X of the photovoltaic sandwich panel 10 is too large, and the sealing members 4 of two adjacent photovoltaic sandwich panels 10 occupy too large space, even if the sealing member 4 is compressible, the two adjacent photovoltaic sandwich panels 10 cannot be tightly fitted, so that the male rib 12 and the female rib 13 of the two adjacent photovoltaic sandwich panels 10 cannot be connected together, and the connection fixation of the photovoltaic sandwich panels 10 is affected. The dimension D3 of the sealing element 4 should therefore be 0.2mm to 5mm, which ensures both that the sealing element 4 fills up the gap between adjacent photovoltaic sandwich panels 10 and that a stable connection of two adjacent photovoltaic sandwich panels 10 is ensured.

In a specific embodiment, as shown in fig. 4, the bottom tile 2 further includes a first abutting portion 22 and a second abutting portion 23, the first abutting portion 22 and the second abutting portion 23 are respectively connected to two ends of the bottom plate 21 along the width direction X of the photovoltaic sandwich panel 10, the first abutting portion 22 includes a first abutting inclined surface 221, the second abutting portion 23 includes a second abutting inclined surface 231, and when the two photovoltaic sandwich panels 10 are connected, the first abutting inclined surface 221 of one photovoltaic sandwich panel 10 can be in abutting engagement with the second abutting inclined surface 231 of the other photovoltaic sandwich panel 10.

As shown in fig. 5 and 6, the first abutment inclined plane 221 and the second abutment inclined plane 231 are parallel to each other, when two photovoltaic sandwich panels 10 are connected, the first abutment inclined plane 221 of one photovoltaic sandwich panel 10 can abut against the second abutment inclined plane 231 of the other photovoltaic sandwich panel 10, and the first abutment inclined plane 221 is used for limiting the second abutment inclined plane 231 to generate upward displacement along the thickness direction Z of the photovoltaic sandwich panel 10, so that stable connection of the two photovoltaic sandwich panels 10 is realized, and thus the installation stability when the plurality of photovoltaic sandwich panels 10 are connected with each other is improved.

In a specific embodiment, as shown in fig. 4, the first abutment inclined surface 221 and the second abutment inclined surface 231 both extend along the third direction K, and an included angle α is formed between the third direction K and the width direction X of the photovoltaic sandwich panel 10, where the included angle α satisfies: alpha is more than or equal to 30 degrees and less than or equal to 80 degrees. The included angle α may be specifically 30 °, 45 °, 60 °, 70 ° or 80 °, or may be other values within the above range, which is not limited in this embodiment.

When the included angle α is too small (for example, less than 30 °), the distance between the second abutment inclined surface 231 and the bottom plate 21 is too small along the thickness direction Z of the photovoltaic sandwich panel 10, resulting in too small a thickness of the second heat preservation portion 32 at this position, reducing the structural strength of the photovoltaic sandwich panel 10 at this position; when the included angle α is too large (e.g., greater than 80 °), the inclination angles of the first abutment inclined plane 221 and the second abutment inclined plane 231 with respect to the width direction X of the photovoltaic sandwich panel 10 are too large, and at this time, the two photovoltaic sandwich panels 10 are connected, so that the limit effect of the first abutment inclined plane 221 of one photovoltaic sandwich panel 10 on the second abutment inclined plane 231 of the other photovoltaic sandwich panel 10 is greatly reduced, which is not beneficial to the stable installation of the photovoltaic sandwich panels 10. Therefore, when the included angle α between the third direction K and the width direction X of the photovoltaic sandwich panel 10 should be 30 ° to 80 °, not only the structural strength requirement of the photovoltaic sandwich panel 10 can be satisfied, but also two adjacent photovoltaic sandwich panels 10 can be ensured to be stably connected, and the installation stability of the photovoltaic sandwich panel 10 is improved.

Further, as shown in fig. 5 and 6, the first abutting portion 22 further includes a first abutting plane 222 extending in the thickness direction Z of the photovoltaic sandwich panel 10, both ends of the first abutting plane 222 are connected to the bottom plate 21 and the first abutting inclined surface 221, respectively, and the second abutting portion 23 further includes a second abutting plane 232 extending in the thickness direction Z of the photovoltaic sandwich panel 10, both ends of the second abutting plane 232 are connected to the bottom plate 21 and the second abutting inclined surface 232, respectively. When two photovoltaic sandwich panels 10 are connected, the first abutment plane 222 of one photovoltaic sandwich panel 10 can be in abutment fit with the second abutment plane 232 of the other photovoltaic sandwich panel 10. At this time, the first abutting plane 222 and the second abutting plane 232 can mutually limit along the width direction X of the photovoltaic sandwich panel 10, so as to prevent the photovoltaic sandwich panel 10 from being displaced along the width direction X thereof.

Providing the first abutment plane 222 and the second abutment plane 232 is advantageous for improving the structural strength of the bottom shoe 2, and compared with the structure in which the first abutment inclined plane 221 and the second abutment inclined plane 231 are directly connected with the bottom plate 21, the bottom shoe 2 is less likely to break.

In a specific embodiment, as shown in fig. 4, the bottom tile 2 is further provided with an extension 24, along the width direction X of the photovoltaic sandwich panel 10, the extension 24 extends towards the outside of the photovoltaic sandwich panel 10 with respect to the top tile 1, the extension 24 being connected to the first abutment inclined surface 221; the bottom tile 2 is further provided with an inward folded portion 25, and along the width direction X of the photovoltaic sandwich panel 10, the inward folded portion 25 extends toward the inside of the photovoltaic sandwich panel 10 with respect to the top tile 1 to form an avoidance space 26, and the inward folded portion 25 is connected with the second abutment inclined surface 231. When the first contact slope 221 contacts the second contact slope 231, the first extension portion 241 can be accommodated in the escape space 26.

As shown in fig. 4, with the two ends of the roof tile 1 in the width direction X of the photovoltaic sandwich panel 10 as a reference, the inward folded portion 25 is folded toward the inside of the photovoltaic sandwich panel 10, and includes a first inward folded portion 251 extending in the width direction X of the photovoltaic sandwich panel 10 and a second inward folded portion 252 extending in the thickness direction Z of the photovoltaic sandwich panel 10, the second inward folded portion 252 being configured to be connected to the second abutment inclined surface 231, and the first inward folded portion 251 and the second inward folded portion 252 together enclosing the avoiding space 26; the extension 24 protrudes toward the outside of the photovoltaic sandwich panel 10, and includes a first extension 241 extending in the width direction X of the photovoltaic sandwich panel 10 and a second extension 242 extending in the thickness direction Z of the photovoltaic sandwich panel 10, the second extension 242 being for connection with the first abutment inclined surface 221. As shown in fig. 6, when the first abutting inclined plane 221 abuts against the second abutting inclined plane 231, the first outer extension portion 24 can be just contained in the avoidance space 26, at this time, the top tiles 1 of the two adjacent photovoltaic sandwich panels 10 can approach and abut against each other, so that the male ribs 12 and the female ribs 13 of the two adjacent photovoltaic sandwich panels 10 are fixedly connected, the gap between the two adjacent photovoltaic sandwich panels 10 is reduced, on one hand, the heat insulation effect of the photovoltaic sandwich panels 10 can be improved by the structure matching with the sealing piece 4, on the other hand, the distance between the two adjacent photovoltaic sandwich panels 10 is reduced, the number of the photovoltaic sandwich panels 10 in the photovoltaic component is increased, and the power of the photovoltaic component is improved.

As shown in fig. 4, the second abutment 23 has a dimension D4 in the width X direction of the photovoltaic sandwich panel 10, and the first abutment 22 has dimensions D5, D4, and D5 in the width X direction of the photovoltaic sandwich panel 10 satisfying: D4-D5 of 0.8 mm.ltoreq.1.5 mm, specifically, 0.8mm, 0.95mm, 1mm, 1.15mm, 1.3mm or 1.5mm, but other values within the above range are also possible, which is not limited in this embodiment.

When the value of D4-D5 is 0.8mm to 1.5mm, the contact area between the first abutting inclined surface 221 and the second abutting inclined surface 231 can be made large enough, so that the stability of the two abutting and matching is ensured, and in addition, when the value of D4-D5 is 0.8mm to 1.5mm, the size of the avoiding space 26 can meet the requirement of accommodating the extension part 24, and the stability of the two photovoltaic sandwich panels 10 when connected is ensured.

The embodiment of the application also provides a preparation method of the photovoltaic sandwich panel 10, which is used for preparing the photovoltaic sandwich panel 10 described in each embodiment, as shown in fig. 7, and comprises the following steps:

step S1: a top shoe 1 and a bottom shoe 2 are provided.

Step S2: an insulating layer 3 is arranged between the top tile 1 and the bottom tile 2, so that the top tile 1 and the bottom tile 2 clamp the insulating layer 3 together along a first direction Z.

An insulating layer 3 is arranged between the top tile 1 and the bottom tile 2 and is used for realizing the heat insulation function of the photovoltaic sandwich panel 10.

Step S3: sealing elements 4 are respectively arranged on two sides of the heat preservation layer 3 along the second direction X, and two ends of the sealing elements 4 along the first direction Z are respectively and fixedly connected with the top tile 1 and the bottom tile 2.

The two ends of the sealing element 4 are fixedly connected with the top tile 1 and the bottom tile 2 respectively, so that the sealing element 4 can be installed and fixed, and the preparation of the photovoltaic sandwich panel 10 is completed. Specifically, the sealing member 4 can entirely cover both side surfaces of the heat insulating layer 3 in the second direction X.

In this embodiment, since the sealing members 4 are disposed on two sides of the photovoltaic sandwich panels 10, when two photovoltaic sandwich panels 10 are connected, the gaps between two adjacent photovoltaic sandwich panels 10 will be filled with the sealing members 4, so as to achieve a sealing effect, improve the air tightness of the connection position of the two photovoltaic sandwich panels 10, and further improve the heat insulation effect when the plurality of photovoltaic sandwich panels 10 are connected.

It should be noted that, the first direction Z related to the preparation method is perpendicular to the second direction X, where the first direction Z is the thickness direction Z of the finished photovoltaic sandwich panel 10, and the second direction X is the width direction X of the finished photovoltaic sandwich panel 10.

In a specific embodiment, at least one side surface of the seal 4 has an adhesive property along the second direction X, for step S3: when the sealing elements 4 are respectively arranged on the two sides of the heat preservation layer 3, the preparation method specifically comprises the following steps: the adhesive side surface of the sealing member 4 is adhered and fixed with the top tile 1 and the bottom tile 2 respectively.

The sealing element 4 is self-adhesive, so that the installation and the fixation are more convenient, at least part of the upper end of the sealing element 4 along the first direction Z is fixedly bonded with the top tile 1, and at least part of the lower end of the sealing element is fixedly bonded with the bottom tile 2. On the basis, the part of the sealing element 4 which is not bonded with the top tile 1 and the bottom tile 2 can be bonded and fixed with the heat insulation layer 3, so that the bonding area of the sealing element 4 is increased, and the installation stability of the sealing element 4 is improved.

In a specific embodiment, as shown in fig. 8, for step S2: when the heat preservation layer 3 is arranged between the top tile 1 and the bottom tile 2, the preparation method specifically comprises the following steps:

step A1: a first thermal insulation 31 is provided between the top tile 1 and the bottom tile 2 to form an assembly with openings on both sides in the second direction X.

The materials of the first heat preservation parts 31 are all regular plate-shaped structures, and the first heat preservation parts 31 should be arranged at the top plate 11 of the top tile 1, so the first heat preservation parts 31 are arranged first.

Step A2: the second heat preservation part 32 and the third heat preservation part 33 are respectively arranged at the two openings, so that the two sides of the first heat preservation part 31 along the second direction X are respectively connected with the second heat preservation part 32 and the third heat preservation part 33, wherein the heat preservation layer 3 comprises the first heat preservation part 31, the second heat preservation part 32 and the third heat preservation part 33.

After the first heat preservation portion 31 is set, the second heat preservation portion 32 and the third heat preservation portion 33 are further arranged on two sides of the first heat preservation portion 31, so that the second heat preservation portion 32 and the third heat preservation portion 33 jointly clamp the first heat preservation portion 31, and therefore the first heat preservation portion 31 is limited in the second direction X.

In a specific embodiment, as shown in fig. 9, for step A1: when the first heat preservation part 31 is arranged between the top tile 1 and the bottom tile 2, the preparation method specifically comprises the following steps;

step B1: a roof tile 1 is taken and placed with its inner surface facing upwards.

Step B2: the adhesive is uniformly applied to the inner surface of the main body 111 of the top plate 11 and/or the upper surface of the first heat retaining portion 31.

Step B3: the inner surface of the main body 111 and the upper surface of the first heat retaining portion 31 are bonded to each other so that they are fixedly joined by an adhesive.

The above steps can realize the fixed connection of the first heat preservation part 31 and the top tile 1. The first heat retaining portion 31 may be a one-piece plate structure, and is directly adhered to the inner surface of the main body 111. The first heat retaining portion 31 may be formed of a plurality of regular small-sized plate structures together, and in this case, it is necessary to secure the plurality of small-sized plates to each other by adhesive bonding.

Step B4: a bottom tile 2 is taken.

Step B5: adhesive is uniformly applied to the inner surface of the bottom shoe 2 and/or the lower surface of the first heat retaining portion 31.

Step B6: the inner surface of the bottom shoe 2 and the lower surface of the first heat retaining portion 31 are bonded to each other so that they are fixedly joined by an adhesive.

The above steps can realize the fixed connection of the first heat preservation part 31 and the bottom tile 2, thereby realizing the fixed connection of the first heat preservation part 31 and the top tile 1 and the bottom tile 2, and forming an assembly with openings on both sides along the second direction X.

Wherein, after the step B6, the preparation method may further include: the assembly formed by the first heat retaining portion 31, the top shoe 1 and the bottom shoe 2 is pressed.

This step enables a tighter connection between the first thermal insulation 31 and the top and bottom tiles 1, 2, ensuring a sufficiently stable structure of the assembly.

In a specific embodiment, for step A2: when the second heat preservation part 32 and the third heat preservation part 33 are respectively arranged at the two openings, the preparation method specifically comprises the following steps: liquid polyurethane is injected into the assembly from two openings respectively, and the liquid polyurethane is solidified and molded through a spontaneous foaming process to form a second heat preservation part 32 and a third heat preservation part 33.

The liquid polyurethane is injected into the space at the opening, and the liquid polyurethane can be self-foamed to fill the space at the opening, so as to form the second heat-insulating portion 32 and the third heat-insulating portion 33. And the foaming molding time of the liquid polyurethane is shorter, so that the manufacturing efficiency of the photovoltaic sandwich panel 10 can be improved.

Step S3 after step A2, when the liquid polyurethane is injected into the space at the opening, step S3 can be immediately performed, namely, when the foaming forming process of the liquid polyurethane is not completed, the sealing element 4 is adhered to the top tile 1 and the bottom tile 2, at this time, the sealing element 4 can seal the two openings, limit the flowing direction of the liquid polyurethane, prevent the foamed polyurethane material from flowing to the outer side of the photovoltaic sandwich panel 10 from the opening, ensure that the foaming polyurethane at the edge of the opening is better formed, and fill the gap between the top tile 1 and the bottom tile 2.

In a specific embodiment, in step B3: after attaching the inner surface of the main body portion 111 and the upper surface of the first heat retaining portion 31, the manufacturing method further includes: adhesive is applied to both sides of the first heat retaining portion 31 in the second direction X.

The side surface of the first heat preservation part 31 is coated with the adhesive, which is favorable for improving the connection stability of the first heat preservation part 31, the second heat preservation part 32 and the third heat preservation part 33.

The material of the adhesive is a mixed material of isocyanate and polyether, and the mixing ratio of the isocyanate and the polyether can be selectively adjusted according to the different bonding positions and materials so as to ensure the bonding effect of the adhesive. The adhesive is used for bonding the top tile 1 and the first heat preservation part 31, and the bottom tile 2 and the first heat preservation part 31, wherein the mixing ratio of isocyanate and polyether is 1:1; the adhesive is used for bonding the first heat preservation part 31 and the second heat preservation part 32, and the mixing ratio of isocyanate and polyether is 1 when the first heat preservation part 31 and the third heat preservation part 33: 1.08.

In a specific embodiment, the corner 112 is raised along the first direction Z to form the second installation space 102, and before the step B2, the preparation method further includes: the fourth heat retaining portion 34 is provided in the second installation space 102.

Because the corner 112 is irregular in structure, it is inconvenient to place a material of a regular shape, and therefore, it is necessary to separately provide the fourth heat insulating portion 34, and to adhere the first heat insulating portion 31 to the top plate 11 after the material of the fourth heat insulating portion 34 is filled in the second installation space 102.

In a specific embodiment, when the fourth heat preservation part 34 is disposed in the second installation space 102, the preparation method specifically includes: liquid polyurethane is injected into the second installation space 102, and the liquid polyurethane is solidified and molded through a self-foaming process to form the fourth heat preservation part 34.

Liquid polyurethane is injected into the second installation space 102, and the liquid polyurethane can be self-foaming-molded to fill the corner 112, thereby forming the fourth insulation 34. And the foaming molding time of the liquid polyurethane is shorter, so that the manufacturing efficiency of the photovoltaic sandwich panel 10 can be improved.

In summary, the specific steps for preparing the photovoltaic sandwich panel 10 are as follows: taking a top tile 1, and placing the inner surface of the top tile upwards; injecting liquid polyurethane into the second installation space 102 formed by the corner relief 112, and forming a fourth heat preservation part 34 after the liquid polyurethane self-foams; uniformly coating adhesive on the inner surface of the main body 111 of the top plate 11 and/or the upper surface of the material of the first heat preservation part 31; attaching the inner surface of the main body 111 and the upper surface of the first heat retaining portion 31 to each other so that they are fixedly connected by an adhesive; coating adhesive on two sides of the first heat preservation part 31 material along the second direction X; taking a bottom tile 2; uniformly coating adhesive on the inner surface of the bottom tile 2 and/or the lower surface of the first heat preservation part 31; attaching the inner surface of the bottom tile 2 and the lower surface of the first heat preservation part 31 so that the two parts are fixedly connected through adhesive glue, and at this time, the top tile 1, the bottom tile 2 and the first heat preservation part 31 form an assembly with openings at two sides along the second direction X; pressing the assembly formed by the first heat preservation part 31, the top tile 1 and the bottom tile 2; respectively injecting liquid polyurethane into the assembly from the two openings, and solidifying and forming the liquid polyurethane through a spontaneous foaming process to form a second heat preservation part 32 and a third heat preservation part 33; the surface of the sealing member 4 with the viscosity is respectively adhered and fixed with the top tile 1 and the bottom tile 2, and at this time, the side surfaces of the second heat preservation part 32 and the third heat preservation part 33 can also be adhered and fixed with the sealing member 4, thereby completing the preparation of the photovoltaic sandwich panel 10.

Embodiments of the present application also provide a photovoltaic member comprising a plurality of photovoltaic sandwich panels 10 and a plurality of photovoltaic modules 20. Wherein the photovoltaic sandwich panel 10 is the photovoltaic sandwich panel 10 described in the above respective embodiments.

When two adjacent photovoltaic sandwich panels 10 are connected, the male rib 12 of one photovoltaic sandwich panel 10 and the female rib 13 of the other photovoltaic sandwich panel 10 are formed with a locking edge 14 to improve the connection stability of the two adjacent photovoltaic sandwich panels 10.

In a specific embodiment, as shown in fig. 6, the photovoltaic module further includes a serging bracket 5, and along the thickness direction X of the photovoltaic sandwich panel 10, one end of the serging bracket 5 is fixedly connected to the serging 14, and the other end is fixedly connected to the outer extension 24 by the fastener 6.

The lower end of the serging bracket 5 is fixed on the first extension portion 241, and the upper end is connected with the serging structure formed by the male rib 12 and the female rib 13, so that the connection stability of the male rib 12 and the female rib 13 can be improved.

As shown in fig. 6, when the serging bracket 5 is disposed between two adjacent photovoltaic sandwich panels 10, the sealing members 4 of the two adjacent sandwich panels 10 can jointly wrap the serging bracket 5 due to the compressible characteristic of the sealing members 4, so as to achieve the effect of sealing the gap at the joint. That is, in the photovoltaic member, the sealing effect of the sealing member 4 is not affected regardless of whether the serging brackets 5 are provided between the adjacent two photovoltaic sandwich panels 10.

In a specific embodiment, as shown in fig. 10, the photovoltaic member further comprises an insulating spacer 7, the insulating spacer 7 being secured between the lockstitch bracket 5 and the outer extension 24 by fasteners 6.

The fastener 6 is positioned in the relief space 26, and the fastener 6 passes through the lockstitch bracket 5, the insulation blanket 7, the first outer extension 241, the third insulation 33, and the bottom plate 21 in order to secure the photovoltaic sandwich panel 10 to the purlin of the roof. The heat insulation gasket 7 can improve the connection tightness of the serging support 5 and the outer extension 24 on the one hand, and on the other hand, can block the metal connection between the bottom tile 2 and the serging support 5, prevent indoor temperature from being transferred to the outdoor through the bottom tile 2 and the serging support 5, thereby playing the heat insulation effect, and further improving the heat insulation effect of the photovoltaic sandwich panel 10.

Wherein the fastener 6 may be a self-tapping screw or a bolt, to which the present application is not limited.

As shown in fig. 4, along the width direction X of the photovoltaic sandwich panel 10, the end of the bottom tile 2 provided with the second abutting portion 23 has a dimension H3, the end of the bottom tile 2 provided with the first abutting portion 22 has a dimension H4, and the values of H3-H4 satisfy: H3-H4 is more than or equal to 0.5mm and less than or equal to 1.5mm, and can be more specifically 0.5mm, 0.6mm, 0.8mm, 1mm, 1.2mm, 1.3mm or 1.5mm.

When the value of H3-H4 is 0.8mm to 1.5mm, it is ensured that the avoiding space 26 has a sufficiently large dimension in the thickness direction Z of the photovoltaic sandwich panel 10 so as to be able to accommodate the fastener 6 without affecting the overall structural strength and rigidity of the bottom tile 2.

Specifically, the material of the heat insulating mat 7 is one of Ethylene Propylene Diene Monomer (EPDM), nitrile rubber (NBR), fluororubber (FPM), asbestos rubber (Asbestos Rubber ASBR), graphite, ethylene propylene rubber (Ethylene Propylene Diene EPd), polyurethane (PU), polyimide (PI), polypropylene (Polypropylene PP), polyethylene (PE), polytetrafluoroethylene (Polytetrafluoroethylene PTFE), and nylon 66+25% glass fiber (PA 66GF 25). The above materials have low thermal conductivity, so that they have good heat insulating effect and can be used for manufacturing the heat insulating pad 7.

When a plurality of photovoltaic sandwich panels 10 are connected, a first photovoltaic sandwich panel 10 is placed on a roof, a serging bracket 5 is coupled, the upper end of the serging bracket is lapped on a male rib 12 of the photovoltaic sandwich panel 10, then a heat insulation gasket 7 is placed on an extension 24 of the photovoltaic sandwich panel 10, the lower end of the serging bracket 5 is lapped on the heat insulation gasket 7, and then a fastener 6 is taken to sequentially pass through the serging bracket 5, the heat insulation gasket 7 and the photovoltaic sandwich panel 10 so as to fix the photovoltaic sandwich panel 10 on purlines of the roof. Then another piece of photovoltaic sandwich panel 10 is taken out, the second abutting part 23 of the second piece of photovoltaic sandwich panel 10 is aligned with the first abutting part 22 of the first piece of photovoltaic sandwich panel 10, the first abutting inclined plane 221 abuts against the second abutting inclined plane 231, meanwhile the first abutting plane 222 abuts against the second abutting plane 232, then the female rib 13 of the second piece of photovoltaic sandwich panel 10 is lapped on the overlock bracket 5, the male rib 12 and the female rib 13 are bent through the overlock machine to form the overlock 14, at this time, the overlock bracket 5 is also fixed with the male rib 12 and the female rib 13, the fixed connection of the two pieces of photovoltaic sandwich panels 10 is completed, and the rest of photovoltaic sandwich panels 10 are sequentially connected in the mode.

The photovoltaic module 20 and the photovoltaic sandwich panel 10 can be directly fixed by gluing, and the two ends of the photovoltaic module 20 along the width direction X of the photovoltaic sandwich panel 10 are respectively and fixedly connected with the first bending part 151 of the female rib 13 and the first bending part 151 of the male rib 12. Alternatively, the connection between the photovoltaic module 20 and the photovoltaic sandwich panel 10 can also be achieved by using the clamps 30, the clamps 30 are mounted on the lockstitch edge 14, and the two clamps respectively clamp the photovoltaic module 20 together from two ends of the photovoltaic module 20 along the width direction X of the photovoltaic sandwich panel 10 so as to achieve the fixed connection between the photovoltaic module 20 and the photovoltaic sandwich panel 10, as shown in fig. 5, each clamp 30 respectively clamps one photovoltaic module 20 along two sides of the width direction X of the photovoltaic sandwich panel 10.

In the connection mode of the two photovoltaic modules 20 and the photovoltaic sandwich panel 10, the photovoltaic modules 20 and the corner slack portion 112 can be fixedly connected through gluing, so that the installation stability of the photovoltaic modules 20 is improved, or the photovoltaic modules 20 and the corner slack portion 112 can also keep clearance fit along the thickness direction Z of the photovoltaic sandwich panel 10, so that a deformation space can be provided for the photovoltaic modules 20, and when the photovoltaic modules 20 are abutted or collided with the corner slack portion 112 under the action of external force, the contact part of the photovoltaic modules 20 and the corner slack portion 112 can be prevented from being broken due to stress concentration.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. A photovoltaic sandwich panel, characterized in that the photovoltaic sandwich panel (10) comprises:

a roof tile (1);

the photovoltaic sandwich panel comprises a bottom tile (2), wherein a first abutting part (22) is arranged at one end of the bottom tile (2) along the width direction of the photovoltaic sandwich panel (10), the first abutting part (22) comprises a first abutting inclined surface (221), a second abutting part (23) is arranged at the other end of the bottom tile (2), and the second abutting part (23) comprises a second abutting inclined surface (231);

the heat insulation layer (3) is arranged between the top tile (1) and the bottom tile (2) along the thickness direction of the photovoltaic sandwich panel (10);

when two photovoltaic sandwich panels (10) are connected, the first abutment inclined surface (221) of one photovoltaic sandwich panel (10) can be in abutment fit with the second abutment inclined surface (231) of the other photovoltaic sandwich panel (10).

2. The photovoltaic sandwich panel according to claim 1, characterized in that the first abutment ramp (221) and the second abutment ramp (231) both extend in a third direction;

An included angle alpha is formed between the third direction and the width direction of the photovoltaic sandwich panel (10), and the included angle alpha meets the following conditions: alpha is more than or equal to 30 degrees and less than or equal to 80 degrees.

3. The photovoltaic sandwich panel according to claim 1, characterized in that the bottom tile (2) further comprises a bottom plate (21), the first abutment portion (22) and the second abutment portion (23) being located on both sides of the bottom plate (21) in the width direction of the photovoltaic sandwich panel (10), respectively;

the first abutting portion (22) further comprises a first abutting plane (222) extending along the thickness direction of the photovoltaic sandwich panel (10), and two ends of the first abutting plane (222) are respectively connected with the bottom plate (21) and the first abutting inclined plane (221);

the second abutting part (23) further comprises a second abutting plane (232) extending along the thickness direction of the photovoltaic sandwich panel (10), and two ends of the second abutting plane (232) are respectively connected with the bottom plate (21) and the second abutting inclined plane (231);

when two photovoltaic sandwich panels (10) are connected, the first abutment plane (222) of one photovoltaic sandwich panel (10) can be in abutment fit with the second abutment plane (232) of the other photovoltaic sandwich panel (10).

4. The photovoltaic sandwich panel according to claim 1, characterized in that the bottom tile (2) is further provided with an extension (24), the extension (24) extending towards the outside of the photovoltaic sandwich panel (10) with respect to the top tile (1) in the width direction of the photovoltaic sandwich panel (10), the extension (24) being connected with the first abutment ramp (221);

The bottom tile (2) is further provided with an inward folded part (25), the inward folded part (25) extends towards the inner side of the photovoltaic sandwich panel (10) relative to the top tile (1) along the width direction of the photovoltaic sandwich panel (10) so as to form an avoidance space (26), and the inward folded part (25) is connected with the second abutting inclined plane (231);

when the first contact slope (221) and the second contact slope (231) are in contact, the extension part (24) can be accommodated in the avoidance space (26).

5. The photovoltaic sandwich panel according to claim 1, characterized in that, along the width direction of the photovoltaic sandwich panel (10), both ends of the top tile (1) are respectively provided with male ribs (12) and female ribs (13);

when two photovoltaic sandwich panels (10) are connected, the male rib (12) of one photovoltaic sandwich panel (10) is fixedly connected with the female rib (13) of the other photovoltaic sandwich panel (10).

6. The photovoltaic sandwich panel according to claim 5, characterized in that the roof tile (1) further comprises a roof panel (11), the male ribs (12) and the female ribs (13) being located on both sides of the roof panel (11) in the width direction of the photovoltaic sandwich panel (10), respectively;

the top plate (11) is provided with an angular relief (112), and the angular relief (112) protrudes in a direction away from the bottom tile (2) along a thickness direction of the photovoltaic sandwich panel (10).

7. A photovoltaic member, the photovoltaic member comprising:

a plurality of photovoltaic sandwich panels (10), the photovoltaic sandwich panels (10) being the photovoltaic sandwich panels (10) of any of claims 1-6;

the photovoltaic modules (20) are fixed with the photovoltaic sandwich panel (10) through clamps (30) or gluing.

8. The photovoltaic component according to claim 7, characterized in that the male rib (12) of one photovoltaic sandwich panel (10) is fixedly connected with the female rib (13) of an adjacent photovoltaic sandwich panel (10) and forms a locking edge (14);

the photovoltaic component further comprises a serging support (5), one end of the serging support (5) is fixedly connected with the serging (14) along the thickness direction of the photovoltaic sandwich board (10), and the other end of the serging support is fixedly connected with the extension part (24) through a fastener (6).

9. The photovoltaic component according to claim 8, further comprising a heat insulating spacer (7), the heat insulating spacer (7) being secured between the lockstitch bracket (5) and the extension (24) by the fastener (6).

10. The photovoltaic component according to claim 9, characterized in that the material of the heat insulation gasket (7) is one of ethylene propylene diene monomer rubber, nitrile rubber, fluororubber, asbestos rubber, graphite, ethylene propylene rubber, polyurethane, polyimide, polypropylene, polyethylene, polytetrafluoroethylene and nylon 66+25% glass fiber.