CN216699926U - Photovoltaic device - Google Patents

Abstract

The present disclosure provides a photovoltaic device. The photovoltaic device includes: a plurality of photovoltaic panels, each photovoltaic panel including opposing first and second edges, the photovoltaic panels including a first photovoltaic panel and a second photovoltaic panel; a first frame and a second frame respectively assembled on the first side and the second side of the photovoltaic panel; and the sealing assembly is sealed on the second frame assembled on the first photovoltaic panel and the first frame assembled on the second photovoltaic panel, and comprises a waterproof cover plate assembled on the first frame and the second frame. The photovoltaic device has excellent waterproof effect and durability.

Description

Photovoltaic device

Technical Field

The present disclosure relates to a photovoltaic device.

Background

A photovoltaic device is a device that can convert solar energy into electrical energy, and the generated electrical energy can be used by electrical equipment or transmitted to a power grid. The Photovoltaic device can be applied to a Building Integrated Photovoltaic (BIPV) technology, and the BIPV technology is widely applied due to the advantages of meeting Building aesthetic requirements, reducing occupied land resources, realizing Building energy conservation, reducing Building temperature rise and the like.

In the correlation technique, photovoltaic device includes a plurality of photovoltaic boards, and four borders have been assembled respectively to the four sides of every photovoltaic board, and the frame of two adjacent photovoltaic boards pass through the joint to be connected, but water-proof effects is poor, appears the problem of leaking easily.

Disclosure of Invention

The utility model provides a photovoltaic device that water-proof effects is good.

One aspect of the present disclosure provides a photovoltaic device, including:

a plurality of photovoltaic panels, each of the photovoltaic panels including opposing first and second edges, the photovoltaic panels including first and second photovoltaic panels;

a first frame and a second frame assembled to the first side and the second side of the photovoltaic panel, respectively; and

the sealing assembly is sealed on a second frame assembled on the first photovoltaic panel and a first frame assembled on the second photovoltaic panel, and comprises a waterproof cover plate assembled on the first frame and the second frame.

Optionally, the seal assembly further comprises: the waterproof cover plate is arranged on the first side frame and comprises a first sealing element and a second sealing element, wherein the first sealing element is sealed between the top of the first side frame and the waterproof cover plate, and the second sealing element is sealed between the top of the second side frame and the waterproof cover plate.

Optionally, the first sealing element and the second sealing element are both rubber elements.

Optionally, the first frame includes a first lower frame and a first upper frame connected to a top of the first lower frame, and a side surface of the first lower frame is provided with a first opening connected to the first side;

the second frame comprises a second lower frame body and a second upper frame body connected with the top of the second lower frame body, and a second opening connected with the second edge is formed in the side surface of the second lower frame body;

and a flow guide through groove is formed among the first upper frame body, the photovoltaic panel and the second upper frame body.

Optionally, the second opening connected to the first photovoltaic panel is aligned with the first opening connected to the second photovoltaic panel.

Optionally, the top of the first upper frame body is provided with a first abutting portion, the top of the second upper frame body is provided with a second abutting portion, and the waterproof cover plate is connected to the second abutting portion on the first photovoltaic panel and the first abutting portion on the second photovoltaic panel in a sealing manner.

Optionally, the first abutting portion extends along a side facing away from the first opening, and the second abutting portion extends along a side facing away from the second opening.

Optionally, the seal assembly further comprises: the waterproof cover plate comprises a waterproof cover plate and a plurality of clamping pieces which are connected with the bottom surface of the waterproof cover plate at intervals, wherein the clamping pieces stretch into the second frame of the first photovoltaic plate and are assembled between the first frames of the second photovoltaic plate and clamped at the bottom of the first frame and the bottom of the second frame.

Optionally, the photovoltaic device further includes a first upper frame assembled on the second photovoltaic panel, a second upper frame corresponding to the first photovoltaic panel, and a plurality of pressing block assemblies located below the first abutting portion and the second abutting portion.

Optionally, the pressing block assembly and the clamping piece are staggered.

Optionally, the first upper frame body is provided with a first pressure groove blocked by the first abutting portion, the second upper frame body is provided with a second pressure groove blocked by the second abutting portion, the pressing block assembly includes a pressing block, two opposite sides of the pressing block are respectively provided with downward-protruding pressing portions, one of the pressing portions is pressed in the first pressure groove, and the other of the pressing portions is pressed in the second pressure groove.

Optionally, the first lower frame body is provided with a first built-in cavity for accommodating a junction box; and/or

The second lower frame body is provided with a second built-in cavity for accommodating the junction box.

Optionally, the photovoltaic panel further comprises a third photovoltaic panel adjacent to the first photovoltaic panel, the photovoltaic panel further comprising a third edge connecting the first and second edges and a fourth edge opposite the third edge;

the photovoltaic device further includes third and fourth frames respectively assembled to third and fourth sides of the photovoltaic panel, and a third sealing member sealed to the third frame assembled to the first photovoltaic panel and the fourth frame assembled to the third photovoltaic panel.

Optionally, a side of the third frame facing away from the photovoltaic panel is provided with a first connecting portion, a side of the fourth frame facing away from the photovoltaic panel is provided with a second connecting portion mateably connected with the first connecting portion, a surface of at least one of the first connecting portion and the second connecting portion is set to be a rough surface, and the third sealing member is sealed between the first connecting portion and the second connecting portion.

Optionally, the rough surface is a frosted surface, or the rough surface is provided with patterns or a sawtooth structure, and the third sealing element is a rubber element.

Optionally, the number of the first connecting portions and the number of the second connecting portions are multiple, the first connecting portions are dispersedly arranged on the side face of the third frame from top to bottom, and the second connecting portions are dispersedly arranged on the side face of the fourth frame from top to bottom.

Optionally, the rough surface covers the first connecting part and an area between two adjacent first connecting parts; and/or the rough surface covers the second connecting part and the area between two adjacent second connecting parts.

Optionally, the third sealing element covers the first connecting part and the area between two adjacent first connecting parts; or the third sealing member covers the second connection portion and a region between two adjacent second connection portions.

Optionally, at least a part of the first connecting portion located at the uppermost of the third frames blocks the second connecting portion located at the uppermost of the fourth frames; or at least part of the second connecting part positioned at the uppermost part of the fourth frame shields the first connecting part positioned at the uppermost part of the third frame.

Optionally, the first connecting portion is a protruding structure, and the second connecting portion is a recessed structure matched with the protruding structure.

Optionally, a third opening connected with a third edge of the photovoltaic panel is arranged at the top of a side of the third frame facing away from the first connecting portion, a fourth opening connected with a fourth edge of the photovoltaic panel is arranged at the top of a side of the fourth frame facing away from the second connecting portion, and the third opening connected with the first photovoltaic panel is flush with the fourth opening connected with the third photovoltaic panel; and/or

The first connecting part and the second connecting part are in mortise and tenon matched connection.

Optionally, the length of the first frame and the length of the second frame are both greater than the length of the third frame, and the length of the first frame and the length of the second frame are both greater than the length of the fourth frame.

Optionally, the photovoltaic device further comprises:

a support member connected to the back side of the photovoltaic panel;

the fireproof back plate is arranged on one side, opposite to the photovoltaic panel, of the support piece and is connected with the support piece; and

and the fireproof heat insulation body is filled between the photovoltaic panel and the fireproof back panel.

Optionally, the number of the supporting members is at least two, and the supporting members are arranged in a dispersed manner.

Optionally, the support member is a hollow elongate structure.

Optionally, the support member extends parallel or perpendicular to the first edge of the photovoltaic panel.

Optionally, the support member is an inverted triangular truss, a bottom surface of the triangular truss is connected with a back surface of the photovoltaic panel, and a top angle of the triangular truss is connected with the fire-resistant back plate.

Optionally, the top angle of the triangular truss is connected to the fire-resistant back plate through a plate-shaped connecting piece, and the plate surface of the plate-shaped connecting piece is parallel to the plate surface of the fire-resistant back plate.

Optionally, the section along the direction perpendicular to the axis of the triangular truss is in an isosceles triangle structure; and/or

The bottom surface and the two side surfaces of the triangular truss are respectively provided with a plurality of hollowed-out triangles.

Optionally, at least a portion of the refractory insulation is filled within the support.

Optionally, the fire-resistant back plate is connected to the bottom of the first frame and the bottom of the second frame.

The technical scheme provided by the disclosure at least has the following beneficial effects:

the utility model provides a photovoltaic device seals the first frame on second frame and the second photovoltaic board on the first photovoltaic board based on seal assembly to seal assembly's waterproof cover plate assembles in first frame and second frame, avoids rainwater etc. to get into between first frame and the second frame, and this makes seal assembly sealing connection first frame and second frame effectively, makes this photovoltaic device have good water-proof effects and durability.

Drawings

Fig. 1 is a schematic structural diagram of a photovoltaic device according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of a photovoltaic panel of FIG. 1;

FIG. 3 is a schematic diagram of a portion of the photovoltaic device of FIG. 1;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;

fig. 5 is a schematic structural view showing that the first photovoltaic panel and the second photovoltaic panel in fig. 1 are connected through the sealing assembly;

fig. 6 is a schematic structural view illustrating a connection between a waterproof cover plate and a clip member according to an embodiment of the present disclosure;

FIG. 7 is an enlarged view of a portion of the structure of FIG. 6;

fig. 8 is a schematic view illustrating a staggered arrangement of the clamping member and the pressing block assembly according to an embodiment of the disclosure;

FIG. 9 is a cross-sectional view taken along line B-B of FIG. 3;

FIG. 10 is an enlarged schematic view of a portion of FIG. 9;

FIG. 11 is an enlarged schematic view of a further portion of the structure of FIG. 9;

fig. 12 is a schematic structural view showing that the first photovoltaic panel and the third photovoltaic panel are connected by the third sealing member;

fig. 13 is a schematic view of a partial structure of the back side of a photovoltaic device according to an embodiment of the present disclosure;

FIG. 14 is a cross-sectional view taken along line C-C of FIG. 13;

FIG. 15 is an enlarged partial schematic view of FIG. 14;

fig. 16 is a schematic structural view of the triangular truss according to an embodiment of the present disclosure after being cut along the axial direction;

fig. 17 is a partial structural view of a triangular truss provided in an embodiment of the present disclosure along a first direction;

fig. 18 is a partial structural view of a triangular truss provided in an embodiment of the present disclosure along a second direction;

fig. 19 is a schematic partial structural view of a triangular truss provided in an embodiment of the present disclosure along a third direction.

Wherein the reference numbers are as follows:

a photovoltaic plate-110, a first edge-101, a second edge-102, a third edge-103, a fourth edge-104, a first photovoltaic plate-111, a second photovoltaic plate-112, a third photovoltaic plate-113, a first frame-120, a first lower frame-121, a first upper frame-122, a first opening-123, a first butting-124, a first pressure groove-125, a first built-in cavity-126, a second frame-130, a second lower frame-131, a second upper frame-132, a second opening-133, a second butting-134, a second pressure groove-135, a second built-in cavity-136, a diversion through groove-105, a sealing component-140, a waterproof cover plate-141, a first sealing component-142, a second sealing component-143 and a clamping component-144, the fireproof heat-insulating plate comprises a first clamping plate-145, a second clamping plate-146, a connecting piece-147, a first buckle-148, a second buckle-149, a pressing block component-150, a pressing block-151, a pressing part-152, a screw-153, a third frame-160, a first connecting part-161, a third opening-162, a fourth frame-170, a second connecting part-171, a fourth opening-172, a rough surface-106, a third sealing part-180, a supporting piece-190, a first connecting body-191, a second connecting body-192, a third connecting body-193, a fourth connecting body-194, a fireproof back plate-200, a fireproof heat-insulating body-210 and a plate-shaped connecting piece-220.

Detailed Description

In the related art, the adjacent two photovoltaic panels form a diversion trench after being clamped between the frame and the frame. Because the frame is the metal frame, has the gap behind frame and the frame joint, this makes liquid such as rainwater flow in the gap between two frames easily, though the guiding gutter can discharge rainwater etc. of revealing, when flow such as rainwater is great, rainwater in the guiding gutter can spill over and permeate in the gap on every side, and this can make photovoltaic device appear leaking the problem, and water-proof effects is poor.

In order to solve the above problem, an embodiment of the present disclosure provides a photovoltaic device, including: a plurality of photovoltaic panels, each photovoltaic panel including opposing first and second edges, the photovoltaic panels including a first photovoltaic panel and a second photovoltaic panel; a first frame and a second frame respectively assembled on a first side and a second side of the photovoltaic panel; and the sealing assembly is sealed on the second frame assembled on the first photovoltaic panel and the first frame assembled on the second photovoltaic panel, and comprises a waterproof cover plate assembled on the first frame and the second frame. It is understood that the second frame on the first photovoltaic panel and the first frame on the second photovoltaic panel are sealingly connected by a sealing assembly.

The photovoltaic device that this disclosed embodiment provided seals the first frame on second frame and the second photovoltaic board on the first photovoltaic board based on seal assembly to seal assembly's waterproof cover plate is adorned in first frame and second frame, avoids rainwater etc. to get into between first frame and the second frame, and this makes seal assembly sealing connection first frame and second frame effectively, makes this photovoltaic device have good water-proof effects and durability.

In order to more clearly understand the photovoltaic device provided by the embodiment of the present disclosure, the following embodiments are given:

the orientation of each photovoltaic panel in fig. 1, 2 and 3 is the same, and "upper", "top", "lower" and "bottom" are all based on the orientation in fig. 4-12.

The photovoltaic device provided by the embodiment of the disclosure can comprise: photovoltaic panel 110, first border 120, second border 130, sealing assembly 140, third border 160, fourth border 170, briquetting assembly 150, third seal 180, support 190, fire-resistant backing sheet 200, and fire-resistant insulation 210.

Referring to fig. 1 and 2 in combination, the number of the photovoltaic panels 110 may be plural, and each photovoltaic panel 110 includes first and second opposite sides 101 and 102, a third side 103 connecting the first and second sides 101 and 102, and a fourth side 104 opposite to the third side 103. The photovoltaic panel 110 may include a first photovoltaic panel 111 and a second photovoltaic panel 112, the second edge 102 of the first photovoltaic panel 111 being assembled with the first edge 101 of the second photovoltaic panel 112. The photovoltaic panel 110 may further include a third photovoltaic panel 113 adjacent to the first photovoltaic panel 111, the third side 103 of the first photovoltaic panel 111 being assembled with the fourth side 104 of the third photovoltaic panel 113. The photovoltaic panel 110 may comprise only the first photovoltaic panel 111 and the second photovoltaic panel 112, the photovoltaic panel 110 may also comprise only the first photovoltaic panel 111, the second photovoltaic panel 112 and the third photovoltaic panel 113, or the number of photovoltaic panels 110 is greater than three, such as four photovoltaic panels 110 shown in fig. 1.

Referring to fig. 3, a first bezel 120 and a second bezel 130 may be assembled to the first side 101 and the second side 102 of each photovoltaic panel 110, respectively. Referring to fig. 4, the first bezel 120 may include a first lower frame 121 and a first upper frame 122 connected to a top of the first lower frame 121, and a side surface of the first lower frame 121 may be provided with a first opening 123 connected to the first side 101; the second frame 130 may include a second lower frame 131 and a second upper frame 132 connected to a top of the second lower frame 131, and a side surface of the second lower frame 131 may be provided with a second opening 133 connected to the second side 102. It can be understood that, since the first opening 123 on the side of the first lower frame 121 and the second opening 133 on the side of the second lower frame 131 are respectively connected to the first side 101 and the second side 102 of the photovoltaic panel 110, the first upper frame 122 and the second upper frame 132 are both protruded upward from the surface of the photovoltaic panel 110, a diversion through groove 105 is formed between the first upper frame 122, the photovoltaic panel 110 and the second upper frame 132, the cross section of the diversion through groove 105 is similar to a "U-shaped structure", which is beneficial to accelerating the drainage of rainwater and the like from the diversion through groove 105, and reducing the staying time of rainwater on the photovoltaic panel 110, the first frame 120 and the second frame 130. In the correlation technique, the top of the side of first frame is equipped with first opening, and the top of the side of second frame is equipped with the second opening, is located the first frame of photovoltaic board top like this, is located the water conservancy diversion that can not form "U type structure" between the second frame of photovoltaic board top and the photovoltaic board and leads to the groove, and the rainwater can be random flow on photovoltaic board, first frame and second frame, is unfavorable for the drainage like this, and the rainwater stops and the seepage easily between first frame and second frame. The first frame 120, the second frame 130 and the photovoltaic panel 110 provided by the embodiment of the disclosure are matched, so that drainage is facilitated, and the photovoltaic device has an excellent waterproof effect.

Referring to fig. 1, 3, 5 and 6 in combination, the sealing assembly 140 may be sealed to the second frame 130 assembled on the first photovoltaic panel 111 and the first frame 120 assembled on the second photovoltaic panel 112, and the sealing assembly 140 may include a waterproof cover plate 141, a first sealing member 142, a second sealing member 143 and a plurality of clamping members 144. The waterproof cover plate 141 is assembled on the first frame 120 and the second frame 130, so that rainwater and the like are prevented from entering a gap between the first frame 120 and the second frame 130, and the waterproof effect and the durability of the photovoltaic device are improved. Referring to fig. 6, the waterproof cover plate 141 may extend in a direction parallel to the first frame 120 and be in a strip structure to effectively block a gap between the first frame 120 and the second frame 130. Referring to fig. 5, a section of the waterproof cover plate 141 in a direction perpendicular to the first rim 120 may have an umbrella-like structure, which prevents rainwater from accumulating on the waterproof cover plate 141 and facilitates drainage. With continued reference to fig. 4 or fig. 5, the top of the first upper frame 122 may be provided with a first abutting portion 124, the top of the second upper frame 132 may be provided with a second abutting portion 134, and the waterproof cover plate 141 is hermetically connected to the second abutting portion 134 on the first photovoltaic panel 111 and the first abutting portion 124 on the second photovoltaic panel 112. The first and second abutting portions 124 and 134 facilitate positioning and assembling of the waterproof cover plate 141 with the first and second frames 120 and 130. The first top connection portion 124 may extend along a side facing away from the first opening 123, and the first top connection portion 124 may be formed by extending a sidewall of the first upper frame 122. The second top connection portion 134 may extend along a side facing away from the second opening 133, and the second top connection portion 134 may be formed by extending a sidewall of the second upper frame 132. Thus, after the waterproof cover plate 141 is assembled with the first abutting portion 124 and the second abutting portion 134, a sealed cavity is formed among the waterproof cover plate 141, the first abutting portion 124 and the second abutting portion 134, so as to accommodate other components conveniently.

With continued reference to fig. 5, a first sealing member 142 may be sealed between the top of the first rim 120 and the waterproof cover plate 141, and a second sealing member 143 may be sealed between the top of the second rim 130 and the waterproof cover plate 141, so as to effectively prevent rainwater from entering between the first rim 120 and the second rim 130. Specifically, the first top connection portion 124 of the first upper frame 122 may be connected to the bottom surface of the waterproof cover plate 141 by the first sealing member 142; the second top portion 134 of the second upper frame 132 may be connected to the bottom surface of the waterproof cover plate 141 by a second seal 143. Thus, liquid such as rainwater is prevented from entering between the first frame 120 and the second frame 130 through the gap between the first upper frame 122 and the waterproof cover 141 and the gap between the second upper frame 132 and the waterproof cover 141, the first sealing member 142, and the second sealing member 143 cooperate to enhance the waterproof effect. The first sealing member 142 and the second sealing member 143 may be rubber members, for example, the material of the first sealing member 142 and the second sealing member 143 may be an ethylene propylene diene monomer rubber material, which may not only be waterproof, but also be excellent in aging resistance such as heat resistance and weather resistance, which allows the first sealing member 142 and the second sealing member 143 to have excellent heat resistance, weather resistance, and the like. The first sealing element 142 and the second sealing element 143 may be respectively bonded to the first abutting portion 124 and the second abutting portion 134, and may also be respectively limited in the limiting grooves of the first abutting portion 124 and the second abutting portion 134, which is not specifically limited by the present disclosure.

Referring to fig. 5, 6 and 7, a plurality of clamping members 144 may be connected to the bottom surface of the waterproof cover plate 141 and disposed at intervals, and the clamping members 144 are inserted into the second frame 130 assembled on the first photovoltaic panel 111 and the first frame 120 assembled on the second photovoltaic panel 112 and clamped to the bottom of the first frame 120 and the bottom of the second frame 130, so that the waterproof cover plate 141 is firmly assembled on the first upper frame 122 and the second upper frame 132. Illustratively, the clamping member 144 may include a first clamping plate 145, a second clamping plate 146 opposite to the first clamping plate 145, and a connecting member 147 connecting the first clamping plate 145 and the second clamping plate 146, wherein a bottom of the first clamping plate 145 is provided with a first buckle 148 for clamping the first lower frame 121 in a direction away from the second clamping plate 146, and a bottom of the second clamping plate 146 is provided with a second buckle 149 for clamping the second lower frame 131 in a direction away from the first clamping plate 145.

The plurality of compact assemblies 150 may be assembled to the first upper frame 122 on the second photovoltaic panel 112 and the second upper frame 132 on the first photovoltaic panel 111 and positioned below the first butting portion 124 and the second butting portion 134. Since the compact assembly 150 is located below the first abutting portion 124 and below the second abutting portion 134, the waterproof cover plate 141, the first sealing member 142, and the second sealing member 143 seal the compact assembly 150 inside, and rainwater and the like are prevented from flowing through the compact assembly 150. The pressing block assembly 150 is used for fixedly connecting the first frame 120 and the second frame 130 with a bracket and the like positioned below the photovoltaic assembly, and further fixing the photovoltaic device on a building surface such as a roof. Referring to fig. 8, the pressing block assembly 150 and the clamping member 144 may be staggered, the pressing block assembly 150 is assembled with the adjacent first frame 120 and the second frame 130 at first during assembly, and then the clamping member 144 of the sealing assembly 140 is clamped between the adjacent first frame 120 and the second frame 130, so that the pressing block assembly 150 does not affect the clamping member 144 to extend into the space between the first frame 120 and the second frame 130, thereby facilitating the assembly of the clamping member 144 with the first frame 120 and the second frame 130. Illustratively, with continued reference to fig. 5, the first upper frame 122 is provided with a first press groove 125 blocked by the first abutting portion 124, the second upper frame 132 is provided with a second press groove 135 blocked by the second abutting portion 134, the pressing block assembly 150 may include a pressing block 151, two opposite sides of the pressing block 151 are respectively provided with a press portion 152 protruding downward, one press portion 152 may be pressed in the first press groove 125, and the other press portion 152 may be pressed in the second press groove 135. With this arrangement, the press block 151 can be easily and accurately assembled to the first upper frame 122 and the second upper frame 132. With continued reference to fig. 8, the pressing block assembly 150 may further include a screw 153 connected to the pressing block 151, and the screw 153 penetrates through the pressing block 151 to be connected to a bracket or other component below the photovoltaic device to fix the photovoltaic device.

With continued reference to fig. 5, the first lower frame 121 may be provided with a first built-in cavity 126 for receiving a junction box; and/or the second lower frame 131 may be provided with a second built-in cavity 136 for accommodating the junction box. Therefore, other film layer structures are conveniently designed on the back surface of the photovoltaic panel 110, and other structures, such as the supporting member 190, the fire-resistant back plate 200, the fire-resistant heat insulating body 210 and the like, which are influenced by the junction box arranged on the back surface of the photovoltaic panel 110 are avoided. The first lower frame 121 and the second lower frame 131 may be further provided with holes or grooves for passing out the lead wires connected to the junction box.

In the related art, after the first frame 120 on the second photovoltaic panel 112 and the second frame 130 on the first photovoltaic panel 111 are assembled, the second opening 133 connected to the first photovoltaic panel 111 is not aligned with the first opening 123 connected to the second photovoltaic panel 112, which causes a stair shape between the first photovoltaic panel 111 and the second photovoltaic panel 112, and thus rainwater is easily accumulated at the stair position, which is not beneficial to drainage, and a bracket with an irregular structure is required to support the first photovoltaic panel 111 and the second photovoltaic panel 112, which is tedious to assemble and increases cost. In the embodiment of the present disclosure, with continued reference to fig. 5, the second opening 133 connected to the first photovoltaic panel 111 is aligned with the first opening 123 connected to the second photovoltaic panel 112, that is, after the first frame 120 and the second frame 130 are assembled, the first photovoltaic panel 111 and the second photovoltaic panel 112 are on a plane, which makes the surface of the photovoltaic device flat and beautiful, and facilitates the drainage of rainwater through the diversion channel 105.

With combined reference to fig. 3, 9, 10, 11 and 12, the third rim 160 and the fourth rim 170 may be assembled to the third rim 103 and the fourth rim 104 of the photovoltaic panel 110, respectively, and the third sealing member 180 seals the third rim 160 assembled on the first photovoltaic panel 111 and the fourth rim 170 assembled on the third photovoltaic panel 113, so that the first photovoltaic panel 111 and the third photovoltaic panel 113 are connected in a sealing manner, and the first photovoltaic panel 111 and the second photovoltaic panel 112 are connected in a sealing manner, thereby facilitating the surface of the photovoltaic device to form a complete watertight surface, improving the waterproof performance and durability of the photovoltaic device, and facilitating the application in building integration.

Referring to fig. 9 and 10 in combination, a side of the third frame 160 facing away from the photovoltaic panel 110 may be provided with a first connection portion 161, a side of the fourth frame 170 facing away from the photovoltaic panel 110 may be provided with a second connection portion 171 mateably connected with the first connection portion 161, a surface of at least one of the first connection portion 161 and the second connection portion 171 may be provided with a rough surface 106, and the third sealing member 180 may be sealed between the first connection portion 161 and the second connection portion 171. Rough surface 106 facilitates third seal 180 to securely seal between first connection portion 161 and second connection portion 171. The surface of the first connection portion 161 may be a rough surface 106, the surface of the second connection portion 171 may be a rough surface 106, or both the surface of the first connection portion 161 and the surface of the second connection portion 171 may be a rough surface 106. When the surface of the first connection portion 161 is set to the rough surface 106, the third seal 180 may be provided on the second connection portion 171; when the third sealing member 180 is provided on the surface of the first connection part 161, the surface of the second connection part 171 may be a rough surface 106. The third seal 180 may be bonded to the first connection part 161 or the second connection part 171. The roughness of the rough surface 106 is greater than the roughness of the third seal 180, and the rough surface 106 may be a frosted surface, or the rough surface 106 may be provided with a pattern or a saw-tooth structure, or other regular or irregular structures. The patterns can be stripe patterns, circular patterns, square patterns, other regular or irregular structures. The third sealing member 180 may be a rubber member, and the material of the third sealing member 180 may also be an epdm rubber material, which provides the third sealing member 180 with good heat resistance and weather resistance. The first connection portion 161 and the second connection portion 171 may be connected in a mortise and tenon joint manner, which is advantageous for increasing a connection force between the third frame 160 and the fourth frame 170. The first connection portion 161 and the second connection portion 171 may be provided in various structures, and illustratively, with continued reference to fig. 10 and 11, the first connection portion 161 may have a convex structure and the second connection portion 171 may have a concave structure matching the convex structure. The convex structure and the concave structure are simple and easy to process.

With reference to fig. 9 to 11, the number of the first connection portions 161 and the number of the second connection portions 171 may be multiple, the first connection portions 161 are distributed on the side surface of the third frame 160 from top to bottom, the second connection portions 171 are distributed on the side surface of the fourth frame 170 from top to bottom, and the third frame 160 and the fourth frame 170 are firmly assembled by the matching connection of the first connection portions 161 and the second connection portions 171. When the number of the first connection portions 161 and the second connection portions 171 is plural, the rough surface 106 covers an area between the first connection portion 161 and two adjacent first connection portions 161; and/or the rough surface 106 covers the second connection portion 171 and an area between two adjacent second connection portions 171. In this way, the plurality of first connection portions 161 and the plurality of second connection portions 171 are respectively connected in a matching manner, so that connection points of the side surface of the third frame 160 and the side surface of the fourth frame 170 are increased, and the third frame 160 and the fourth frame 170 can be firmly assembled. When the number of the first connection parts 161 and the second connection parts 171 is plural, the third seal 180 covers the area between the first connection parts 161 and the adjacent two first connection parts 161; or the third sealing member 180 covers the second connection part 171 and an area between adjacent two second connection parts 171. Like this, seal the junction of third frame 160 and fourth frame 170 from top to bottom through third sealing member 180, play excellent sealed effect, reinforcing photovoltaic device's waterproof performance.

When the first connecting portion 161 of the third frame 160 on the first photovoltaic panel 111 is assembled with the second connecting portion 171 of the fourth frame 170 on the third photovoltaic panel 113, at least a portion of the first connecting portion 161 located at the uppermost position of the third frame 160 may block the second connecting portion 171 located at the uppermost position of the fourth frame 170; or referring to fig. 11, at least a portion of the second connection portion 171 positioned at the uppermost of the fourth frames 170 may shield the first connection portion 161 positioned at the uppermost of the third frames 160. In this way, rain water or the like is prevented from directly washing the third seal 180 between the third frame 160 and the fourth frame 170, increasing the service life of the third seal 180.

With continued reference to fig. 12, a top of a side of the third frame 160 facing away from the first connection portion 161 may be provided with a third opening 162 connecting the third side 103 of the photovoltaic panel 110, a top of a side of the fourth frame 170 facing away from the second connection portion 171 may be provided with a fourth opening 172 connecting the fourth side 104 of the photovoltaic panel 110, and the third opening 162 connected to the first photovoltaic panel 111 may be flush with the fourth opening 172 connected to the third photovoltaic panel 113. In this way, the first photovoltaic panel 111 and the third photovoltaic panel 113, which are adjacent to each other, are flush, which is advantageous for providing a smooth and aesthetically pleasing surface to the photovoltaic device.

In the embodiment of the present disclosure, the length of the first frame 120 and the length of the second frame 130 may be greater than the length of the third frame 160, and the length of the first frame 120 and the length of the second frame 130 may be greater than the length of the fourth frame 170. That is, the first bezel 120 and the second bezel 130 are long bezels, and the third bezel 160 and the fourth bezel 170 are short bezels. Of course, the first frame 120 and the second frame 130 may be short frames, and the third frame 160 and the fourth frame 170 may be long frames.

Referring to fig. 13 and 14 in combination, a support 190 may be connected to the back of the photovoltaic panel 110 to improve the force-bearing performance of the photovoltaic panel 110. The number of the supporting members 190 is at least two and the supporting members are dispersedly disposed, so that the force-receiving performance of each position of the photovoltaic panel 110 is improved. The structure of the support member 190 may be designed in various ways, and in order to reduce the mass of the photovoltaic device, the support member 190 may have a hollow elongated structure. The extension direction of the support 190 may be parallel or perpendicular to the first side 101 of the photovoltaic panel 110, which improves the force-bearing performance of the photovoltaic device along the direction parallel or perpendicular to the first side 101. The supporting member 190 may have a square tube structure, a trapezoid tube structure, or other regular or irregular structures, and for example, referring to fig. 15, the supporting member 190 may be an inverted triangular truss, and the bottom surface of the triangular truss is connected to the back surface of the photovoltaic panel 110. The triangular truss has good structural stability and strong compressive property, and the bottom surface of the triangular truss is attached to the back surface of the photovoltaic panel 110, so that the supporting area of the photovoltaic device is increased, and the stress performance of the photovoltaic device is improved. The cross section along the axial direction perpendicular to the triangular truss can be triangular, namely the triangular truss is in a hollow triangular strip structure. With continued reference to fig. 15, the cross section along the direction perpendicular to the axis of the triangular truss may be an isosceles triangle structure, which makes the stress performance of the two sides of the triangular truss the same, and is beneficial to improving the structural stability of the photovoltaic device. Referring to fig. 16, 17, 18 and 19, a plurality of hollowed triangles are arranged on the bottom surface and two side surfaces of the triangular truss, which is not only beneficial to reducing the mass of the triangular truss, but also increases the structural stability of the triangular truss. The hollowed triangles on the bottom surface and the side surface of the triangular truss can be the same or different. Illustratively, with continued reference to fig. 17, the bottom surface of the triangular truss may be provided with a first connection body 191 perpendicular to the edge of the bottom surface, a second connection body 192 forming an acute angle with the edge of the bottom surface, and an open right triangle formed between the first connection body 191, the second connection body 192 and the edge of the bottom surface. An hollowed isosceles triangle is formed between the two adjacent second connecting bodies 192 and the edge of the bottom surface. The two sides of the triangular truss may have the same structure, and referring to fig. 18 and 19, the sides of the triangular truss may be provided with a third connecting body 193 and a fourth connecting body 194 forming an acute angle with the edges of the sides, and a hollowed triangle is formed between the third connecting body 193, the fourth connecting body 194 and the edges of the bottom. The area of the hollowed-out triangle on the bottom surface of the triangular truss can be smaller than that of the hollowed-out triangle on the side surface, so that the bottom surface of the triangular truss has excellent stress performance, and the photovoltaic module has excellent stress performance.

With continued reference to fig. 14 and 15, a fire resistant backing sheet 200 may be disposed on a side of the support 190 facing away from the photovoltaic panel 110 and connected to the support 190. When the supporting member 190 is a triangular truss, the top corner of the triangular truss is connected to the fire-resistant back plate 200. For example, the top angle of the triangular truss may be connected to the fire-resistant back plate 200 through the plate-shaped connector 220, and the plate surface of the plate-shaped connector 220 is parallel to the plate surface of the fire-resistant back plate 200, so as to increase the connection area with the fire-resistant back plate 200, and facilitate stable connection between the fire-resistant back plate 200 and the triangular truss. The plate-shaped connecting member 220 may be a long plate structure or a plurality of block structures arranged in a dispersed manner. The plate-shaped connecting member 220 may be welded to the triangular truss, or a first limiting groove may be formed on the plate surface of the plate-shaped connecting member 220, and the vertex angle of the triangular truss is limited in the first limiting groove, or the plate-shaped connecting member 220 and the triangular truss are integrally formed, or the plate-shaped connecting member 220 is connected to the triangular truss through a connecting member such as a screw. The plate-shaped connecting member 220 may be bonded to the fire-resistant back plate 200, or the plate-shaped connecting member 220 may be welded to the fire-resistant back plate 200, or a second limiting groove may be formed on the plate surface of the fire-resistant back plate 200, and a portion of the plate-shaped connecting member 220 is limited in the second limiting groove, or the plate-shaped connecting member 220 and the fire-resistant back plate 200 are integrally formed, or the plate-shaped connecting member 220 is connected to the fire-resistant back plate 200 by a connecting member such as a screw. The refractory back plate 200 is a plate-shaped structure made of a refractory material, the refractory material may be metal, and the refractory back plate 200 may be a metal back plate. The fire-resistant back panel 200 may be connected, for example, welded, to the bottom of the first frame 120 and the bottom of the second frame 130, which makes the fire-resistant back panel 200 stably connected to the first frame 120 and the second frame 130. The fire-resistant back plate 200 may be further connected to the first frame 120 and the second frame 130 by a connector such as a screw, which is not particularly limited in this disclosure. Fire resistant backplate 200 may also be connected, such as welded, to the bottom of third rim 160 and the bottom of fourth rim 170.

With continued reference to fig. 14 and 15, a refractory insulation 210 can be filled between the photovoltaic panel 110 and the refractory backsheet 200, which provides the photovoltaic device with refractory insulation properties. The refractory insulation 210 can be granular, layered, or other regular or irregular structures. Illustratively, the material of the fire-resistant insulation 210 may be a rubber sponge insulation or a foam-type fire-resistant insulation. The refractory insulation 210 fills at least a portion of the support 190, which provides good thermal insulation for the photovoltaic device at the location where the support 190 is located. Further, the fire-resistant heat insulator 210 can be filled in the hollowed-out triangle of the triangular truss, so that the position of the photovoltaic device where the supporting piece 190 is arranged has good heat insulation performance, and the whole photovoltaic device has uniform heat insulation performance.

Based on the above, according to the photovoltaic device provided by the embodiment of the disclosure, after the first photovoltaic panel 111 and the second photovoltaic panel 112 are assembled, the first photovoltaic panel is sealed to the second frame 130 and the first frame 120 by the sealing assembly 140, and the waterproof cover plate 141 of the sealing assembly 140 is assembled to the first frame 120 and the second frame 130, so that rainwater and the like are prevented from entering between the first frame 120 and the second frame 130, which enables the sealing assembly 140 to effectively seal the first frame 120 and the second frame 130. After the third photovoltaic panel 113 and the fourth photovoltaic panel 110 are assembled, the third sealing member 180 is sealed to the third frame 160 and the fourth frame 170, so that rainwater and the like are prevented from entering between the third frame 160 and the fourth frame 170, and the whole surface of the photovoltaic device has a waterproof effect and weather resistance in combination with the sealing between the first frame 120 and the second frame 130. By arranging the supporting member 190, the fire-resistant heat insulator 210 and the fire-resistant back plate 200 on the back surface of the photovoltaic panel 110, the photovoltaic device has excellent stress performance, fire resistance and heat insulation performance.

Any one of the above-mentioned photovoltaic device that this disclosed embodiment provided can be applied to photovoltaic building integration, and this photovoltaic device has good waterproof performance, weatherability, atress performance, thermal insulation performance and fire resistance, can satisfy the requirement of building, for example can assemble photovoltaic device on the roof of building.

The embodiment of the disclosure also provides the following technical scheme:

technical solution 1, a photovoltaic device, the photovoltaic device includes:

a plurality of photovoltaic panels, each of the photovoltaic panels including opposing first and second edges, the photovoltaic panels including a first photovoltaic panel and a second photovoltaic panel;

a first frame and a second frame assembled to the first side and the second side of the photovoltaic panel, respectively; and

the sealing assembly is sealed on a second frame assembled on the first photovoltaic panel and a first frame assembled on the second photovoltaic panel, and comprises a waterproof cover plate assembled on the first frame and the second frame.

Technical solution 2, the photovoltaic device according to technical solution 1, the sealing member further includes: the waterproof cover plate is arranged on the first side frame and comprises a first sealing element and a second sealing element, wherein the first sealing element is sealed between the top of the first side frame and the waterproof cover plate, and the second sealing element is sealed between the top of the second side frame and the waterproof cover plate.

Technical solution 3, according to the photovoltaic device of technical solution 2, the first sealing member and the second sealing member are both rubber members.

Claim 4 is the photovoltaic device according to claim 1, wherein the first frame includes a first lower frame and a first upper frame connected to a top of the first lower frame, and a side surface of the first lower frame is provided with a first opening connected to the first edge;

the second frame comprises a second lower frame body and a second upper frame body connected with the top of the second lower frame body, and a second opening connected with the second edge is formed in the side surface of the second lower frame body;

and a flow guide through groove is formed among the first upper frame body, the photovoltaic panel and the second upper frame body.

Claim 5 the photovoltaic device of claim 4, wherein the second opening connected to the first photovoltaic panel is aligned with the first opening connected to the second photovoltaic panel.

Technical scheme 6, according to technical scheme 4 the photovoltaic device, the top of first upper portion framework is equipped with first overhead portion, the top of second upper portion framework is equipped with second overhead portion, waterproof apron sealing connection in on the first photovoltaic board second overhead portion with on the second photovoltaic board first overhead portion.

Claim 7 is the photovoltaic device according to claim 6, wherein the first butting portion extends along a side facing away from the first opening, and the second butting portion extends along a side facing away from the second opening.

Technical solution 8, the photovoltaic device according to technical solution 6, the sealing member further includes: the waterproof cover plate comprises a waterproof cover plate and a plurality of clamping pieces which are connected with the bottom surface of the waterproof cover plate at intervals, wherein the clamping pieces stretch into the second frame of the first photovoltaic plate and are assembled between the first frames of the second photovoltaic plate and clamped at the bottom of the first frame and the bottom of the second frame.

Technical means 9 and the photovoltaic device according to technical means 8, further comprising a plurality of pressing block assemblies assembled on the first upper frame body on the second photovoltaic panel and the second upper frame body on the first photovoltaic panel and located below the first abutting portion and the second abutting portion.

Technical scheme 10, according to technical scheme 9 photovoltaic device, the briquetting subassembly with the joint spare staggers.

Technical scheme 11, according to technical scheme 9 photovoltaic device, first upper portion framework is equipped with by the first indent that first overhead portion sheltered from, second upper portion framework is equipped with by the second indent that second overhead portion sheltered from, the briquetting subassembly includes the briquetting, the relative both sides of briquetting are equipped with downward convex crimping portion respectively, one crimping portion is pressed in the first indent, another crimping portion is pressed in the second indent.

Technical solution 12, according to the photovoltaic device described in technical solution 4, the first lower frame body is provided with a first built-in cavity for accommodating the junction box; and/or

The second lower frame body is provided with a second built-in cavity for accommodating the junction box.

Technical solution 13 the photovoltaic device according to technical solution 1, wherein the photovoltaic panel further includes a third photovoltaic panel adjacent to the first photovoltaic panel, and the photovoltaic panel further includes a third edge connecting the first edge and the second edge and a fourth edge opposite to the third edge;

the photovoltaic device further includes third and fourth frames respectively assembled to third and fourth sides of the photovoltaic panel, and a third sealing member sealed to the third frame assembled to the first photovoltaic panel and the fourth frame assembled to the third photovoltaic panel.

Technical solution 14 and the photovoltaic device according to technical solution 13, a side of the third frame facing away from the photovoltaic panel is provided with a first connecting portion, a side of the fourth frame facing away from the photovoltaic panel is provided with a second connecting portion mateably connected with the first connecting portion, a surface of at least one of the first connecting portion and the second connecting portion is a rough surface, and the third sealing member is sealed between the first connecting portion and the second connecting portion.

Technical solution 15, the photovoltaic device according to technical solution 14, wherein the rough surface is a frosted surface, or the rough surface is provided with a pattern or a saw-toothed structure, and the third sealing member is a rubber member.

Technical scheme 16, according to technical scheme 14 photovoltaic device, first connecting portion with the figure of second connecting portion is a plurality of, and is a plurality of first connecting portion from top to bottom the dispersion is located the side of third frame, and is a plurality of the dispersion of second connecting portion from top to bottom is located the side of fourth frame.

Claim 17 provides the photovoltaic device according to claim 16, wherein the rough surface covers the first connection portion and a region between two adjacent first connection portions; and/or the rough surface covers the second connecting part and the area between two adjacent second connecting parts.

Claim 18, the photovoltaic device according to claim 16, wherein the third sealing member covers the first connection portion and a region between two adjacent first connection portions; or the third sealing member covers the second connection portion and a region between two adjacent second connection portions.

Claim 19 and claim 14, wherein the first connection portion located at the uppermost position of the third frame at least partially blocks the second connection portion located at the uppermost position of the fourth frame; or at least part of the second connecting part positioned at the uppermost part of the fourth frame shields the first connecting part positioned at the uppermost part of the third frame.

Technical scheme 20, according to technical scheme 14 the photovoltaic device, first connecting portion are protruding structure, the second connecting portion are with protruding structure matched's sunk structure.

Technical scheme 21, according to technical scheme 14 photovoltaic device, the third frame dorsad the top of the side of first connecting portion is equipped with the connection the third opening of the third side of photovoltaic board, the fourth frame dorsad the top of the side of second connecting portion is equipped with the connection the fourth opening of the fourth side of photovoltaic board, with first photovoltaic board is connected the third opening with the third photovoltaic board is connected the fourth opening flushes.

Technical solution 22 and the photovoltaic device according to technical solution 13, wherein both the length of the first frame and the length of the second frame are greater than the length of the third frame, and both the length of the first frame and the length of the second frame are greater than the length of the fourth frame.

Technical solution 23, the photovoltaic device according to technical solution 1, further comprising:

a support member connected to the back side of the photovoltaic panel;

the fireproof back plate is arranged on one side, opposite to the photovoltaic panel, of the support piece and is connected with the support piece; and

and the fireproof heat insulation body is filled between the photovoltaic panel and the fireproof back panel.

Technical solution 24 the photovoltaic device according to technical solution 23, wherein the number of the supporting members is at least two, and the supporting members are dispersedly disposed.

Technical scheme 25, according to technical scheme 23 photovoltaic device, support piece is hollow rectangular structure.

Claim 26 and claim 25, wherein the support member extends parallel or perpendicular to the first edge of the photovoltaic panel.

Technical scheme 27, according to technical scheme 23 the photovoltaic device, the support piece is an inverted triangular truss, the bottom surface of the triangular truss is connected with the back surface of the photovoltaic panel, and the vertex angle of the triangular truss is connected with the fire-resistant back plate.

Technical scheme 28 and according to technical scheme 27, in the photovoltaic device, the vertex angle of the triangular truss is connected with the fire-resistant back plate through a plate-shaped connecting piece, and the plate surface of the plate-shaped connecting piece is parallel to the plate surface of the fire-resistant back plate.

Technical solution 29 and the photovoltaic device according to technical solution 27, wherein a cross section along a direction perpendicular to an axis of the triangular truss is an isosceles triangle structure; and/or

The bottom surface and the two side surfaces of the triangular truss are respectively provided with a plurality of hollowed-out triangles.

The photovoltaic device according to claim 30 or 25, wherein the refractory heat insulator is at least partially filled in the support.

Technical solution 31 and the photovoltaic device according to technical solution 23, wherein the fire-resistant back sheet is connected to the bottom of the first frame and the bottom of the second frame.

The above embodiments of the present disclosure may be complementary to each other without conflict.

The above description is only exemplary of the present disclosure and should not be taken as limiting the disclosure, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.

Claims (31)

1. A photovoltaic device, comprising:

a plurality of photovoltaic panels, each of the photovoltaic panels including opposing first and second edges, the photovoltaic panels including first and second photovoltaic panels;

a first frame and a second frame assembled to the first side and the second side of the photovoltaic panel, respectively; and

the sealing assembly is sealed on a second frame assembled on the first photovoltaic panel and a first frame assembled on the second photovoltaic panel, and comprises a waterproof cover plate assembled on the first frame and the second frame.

2. The photovoltaic device of claim 1, wherein the sealing assembly further comprises: the waterproof cover plate is arranged on the first side frame and comprises a first sealing element and a second sealing element, wherein the first sealing element is sealed between the top of the first side frame and the waterproof cover plate, and the second sealing element is sealed between the top of the second side frame and the waterproof cover plate.

3. The photovoltaic device of claim 2, wherein the first and second seals are both rubber.

4. The photovoltaic device according to claim 1, wherein the first frame includes a first lower frame and a first upper frame connected to a top of the first lower frame, and a side surface of the first lower frame is provided with a first opening connected to the first edge;

the second frame comprises a second lower frame body and a second upper frame body connected with the top of the second lower frame body, and a second opening connected with the second edge is formed in the side face of the second lower frame body;

and a flow guide through groove is formed among the first upper frame body, the photovoltaic panel and the second upper frame body.

5. The photovoltaic device of claim 4, wherein the second opening connected to the first photovoltaic panel is aligned with the first opening connected to the second photovoltaic panel.

6. The photovoltaic device according to claim 4, wherein a first abutting portion is disposed on a top portion of the first upper frame, a second abutting portion is disposed on a top portion of the second upper frame, and the waterproof cover plate is hermetically connected to the second abutting portion of the first photovoltaic panel and the first abutting portion of the second photovoltaic panel.

7. The photovoltaic device of claim 6, wherein the first peak extends along a side facing away from the first opening and the second peak extends along a side facing away from the second opening.

8. The photovoltaic device of claim 6, wherein the sealing assembly further comprises: the waterproof cover plate comprises a waterproof cover plate and a plurality of clamping pieces which are connected with the bottom surface of the waterproof cover plate at intervals, wherein the clamping pieces stretch into the second frame of the first photovoltaic plate and are assembled between the first frames of the second photovoltaic plate and clamped at the bottom of the first frame and the bottom of the second frame.

9. The photovoltaic device according to claim 8, further comprising a plurality of ballast assemblies assembled to the first upper frame on the second photovoltaic panel and the second upper frame on the first photovoltaic panel and located below the first roof joint and below the second roof joint.

10. The photovoltaic device of claim 9, wherein the ballast assembly is offset from the clip.

11. The pv device according to claim 9 wherein the first upper frame has a first groove blocked by the first abutting portion, the second upper frame has a second groove blocked by the second abutting portion, the press block assembly comprises a press block having two opposite sides respectively provided with downwardly protruding press-bonding portions, one of the press-bonding portions is pressed in the first groove, and the other of the press-bonding portions is pressed in the second groove.

12. The photovoltaic device according to claim 4, characterized in that the first lower frame is provided with a first built-in cavity for housing a junction box; and/or

The second lower frame body is provided with a second built-in cavity for accommodating the junction box.

13. The photovoltaic device of claim 1, wherein the photovoltaic panel further comprises a third photovoltaic panel adjacent to the first photovoltaic panel, the photovoltaic panel further comprising a third edge connecting the first and second edges and a fourth edge opposite the third edge;

the photovoltaic device further includes third and fourth frames respectively assembled to third and fourth sides of the photovoltaic panel, and a third sealing member sealed to the third frame assembled to the first photovoltaic panel and the fourth frame assembled to the third photovoltaic panel.

14. The photovoltaic device according to claim 13, wherein a side of the third frame facing away from the photovoltaic panel is provided with a first connecting portion, a side of the fourth frame facing away from the photovoltaic panel is provided with a second connecting portion mateably connected with the first connecting portion, a surface of at least one of the first connecting portion and the second connecting portion is provided with a rough surface, and the third sealing member is sealed between the first connecting portion and the second connecting portion.

15. The photovoltaic device according to claim 14, wherein the rough surface is a frosted surface or the rough surface is provided with a pattern or a saw-tooth structure, and the third sealing member is a rubber member; and/or

The first connecting part and the second connecting part are in mortise and tenon matched connection.

16. The photovoltaic device according to claim 14, wherein the number of the first connecting portions and the number of the second connecting portions are plural, the plural first connecting portions are dispersedly disposed on the side surface of the third frame from top to bottom, and the plural second connecting portions are dispersedly disposed on the side surface of the fourth frame from top to bottom.

17. The photovoltaic device according to claim 16, wherein the rough surface covers the first connection portion and an area between two adjacent first connection portions; and/or the rough surface covers the second connecting part and the area between two adjacent second connecting parts.

18. The photovoltaic device according to claim 16, wherein the third sealing member covers the first connection portion and a region between two adjacent first connection portions; or the third sealing member covers the second connection portion and a region between two adjacent second connection portions.

19. The photovoltaic device according to claim 14, wherein at least a portion of the first connecting portion uppermost in the third frame blocks the second connecting portion uppermost in the fourth frame; or at least part of the second connecting part positioned at the uppermost part of the fourth frame shields the first connecting part positioned at the uppermost part of the third frame.

20. The photovoltaic device according to claim 14, wherein the first connecting portion is a convex structure and the second connecting portion is a concave structure matching the convex structure.

21. The photovoltaic device according to claim 14, wherein a top of a side of the third frame facing away from the first connection portion is provided with a third opening connecting a third edge of the photovoltaic panel, a top of a side of the fourth frame facing away from the second connection portion is provided with a fourth opening connecting a fourth edge of the photovoltaic panel, and the third opening connecting the first photovoltaic panel is flush with the fourth opening connecting the third photovoltaic panel.

22. The photovoltaic device according to claim 13, wherein the length of the first frame and the length of the second frame are both greater than the length of the third frame, and the length of the first frame and the length of the second frame are both greater than the length of the fourth frame.

23. The photovoltaic device of claim 1, further comprising:

a support member connected to the back side of the photovoltaic panel;

the fireproof back plate is arranged on one side, opposite to the photovoltaic panel, of the support piece and is connected with the support piece; and

and the fireproof heat insulation body is filled between the photovoltaic panel and the fireproof back panel.

24. The photovoltaic device according to claim 23, wherein the number of the supporting members is at least two and the supporting members are arranged in a dispersed manner.

25. The photovoltaic device of claim 23, wherein the support member is a hollow elongated structure.

26. The photovoltaic device according to claim 25, wherein the support member extends parallel or perpendicular to the first edge of the photovoltaic panel.

27. The photovoltaic device of claim 23, wherein the support member is an inverted triangular truss, a bottom surface of the triangular truss being attached to the back side of the photovoltaic panel, and a top corner of the triangular truss being attached to the fire resistant backing panel.

28. The photovoltaic device of claim 27, wherein the top corners of the triangular trusses are connected to the fire resistant back sheet by plate connectors, the plate surfaces of the plate connectors being parallel to the plate surfaces of the fire resistant back sheet.

29. The photovoltaic device of claim 27, wherein a cross-section taken perpendicular to an axis of the triangular truss is an isosceles triangle structure; and/or

The bottom surface and the two side surfaces of the triangular truss are respectively provided with a plurality of hollowed-out triangles.

30. The photovoltaic device of claim 25, wherein at least a portion of the fire resistant insulation fills the support.

31. The photovoltaic device of claim 23, wherein the fire-resistant backsheet is connected to a bottom portion of the first rim and a bottom portion of the second rim.

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