Photovoltaic device

Abstract

The present disclosure provides a photovoltaic device. The photovoltaic device includes: a plurality of photovoltaic panels, each photovoltaic panel including opposite third and fourth sides, the photovoltaic panels including a first photovoltaic panel and a third photovoltaic panel; a third frame and a fourth frame respectively assembled to the third and fourth sides of the photovoltaic panels, a first connecting portion being provided on one side surface of the third frame, a second connecting portion being provided on one side surface of the fourth frame and being capable of matingly connecting with the first connecting portion, at least one of the surfaces of the first connecting portion and the second connecting portion being provided as a rough surface; and a third sealant sealed between the first connecting portion assembled to the first photovoltaic panel and the second connecting portion assembled to the third photovoltaic panel. By designing the rough surface, the third sealant is firmly sealed between the third frame of the first photovoltaic panel and the fourth frame of the third photovoltaic panel, so that the photovoltaic device has excellent waterproofing effect and durability.

Description

Technical Field

[0001] The present disclosure relates to a photovoltaic device. Background Art

[0002] 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 the power grid. The photovoltaic device can be applied to the Building Integrated Photovoltaic (BIPV) technology. The BIPV technology is widely used because it can meet the requirements of building aesthetics, reduce the occupation of land resources, achieve building energy conservation, and reduce the temperature rise of buildings.

[0003] In the related art, a photovoltaic device includes a plurality of photovoltaic panels. Four frames are respectively assembled on the four sides of each photovoltaic panel, and the frames of adjacent two photovoltaic panels are connected by snap connection, but the waterproof effect is poor and water leakage problems are likely to occur. Summary of the Invention

[0004] The present disclosure provides a photovoltaic device with good waterproof effect.

[0005] The present disclosure provides a photovoltaic device, which includes:

[0006] A plurality of photovoltaic panels, each of the photovoltaic panels includes opposite third side and fourth side, and the photovoltaic panels include a first photovoltaic panel and a third photovoltaic panel;

[0007] A third frame and a fourth frame respectively assembled on the third side and the fourth side of the photovoltaic panel, a first connecting portion is provided on one side surface of the third frame, a second connecting portion that can be matched and connected with the first connecting portion is provided on one side surface of the fourth frame, and at least one of the surfaces of the first connecting portion and the second connecting portion is set as a rough surface; and

[0008] A third sealing member sealed between the first connecting portion assembled on the first photovoltaic panel and the second connecting portion assembled on the third photovoltaic panel.

[0009] Optionally, the rough surface is a frosted surface, or the rough surface is provided with patterns or serrated structures, and the third sealing member is a rubber member; and / or

[0010] The first connecting portion and the second connecting portion are connected by tenon and mortise fit.

[0011] Optionally, the number of the first connecting portions and the second connecting portions are both multiple, and the multiple first connecting portions are dispersedly arranged on the side surface of the third frame from top to bottom, and the multiple second connecting portions are dispersedly arranged on the side surface of the fourth frame from top to bottom.

[0012] Optionally, the rough surface covers the first connection part and the area between two adjacent first connection parts; and / or the rough surface covers the second connection part and the area between two adjacent second connection parts.

[0013] Optionally, the third seal covers the first connection part and the area between two adjacent first connection parts; or the third seal covers the second connection part and the area between two adjacent second connection parts.

[0014] Optionally, at least part of the first connection part at the uppermost part of the third frame blocks at least part of the second connection part at the uppermost part of the fourth frame; or at least part of the second connection part at the uppermost part of the fourth frame blocks at least part of the first connection part at the uppermost part of the third frame.

[0015] Optionally, the first connection part has a convex structure, and the second connection part has a concave structure matching the convex structure.

[0016] Optionally, at the top of the side of the third frame facing away from the first connection part, there is a third opening connecting the third side of the photovoltaic panel, and at the top of the side of the fourth frame facing away from the second connection part, there is a fourth opening connecting the fourth side of the photovoltaic panel, and the third opening connected to the first photovoltaic panel is flush with the fourth opening connected to the third photovoltaic panel.

[0017] Optionally, the photovoltaic panel further includes a second photovoltaic panel adjacent to the first photovoltaic panel, and the photovoltaic panel further includes a first side connecting the third side and the fourth side and a second side opposite to the first side;

[0018] The photovoltaic device further includes a first frame and a second frame respectively assembled on the first side and the second side, and a sealing assembly sealed between the second frame assembled on the first photovoltaic panel and the first frame assembled on the second photovoltaic panel.

[0019] Optionally, the sealing assembly includes a waterproof cover plate assembled on the first frame and the second frame.

[0020] Optionally, the sealing assembly further includes: a first seal sealed between the top of the first frame and the waterproof cover plate, and a second seal sealed between the top of the second frame and the waterproof cover plate.

[0021] Optionally, both the first seal and the second seal are rubber parts.

[0022] Optionally, the first frame includes a first lower frame body and a first upper frame body connected to the top of the first lower frame body. A first opening connected to the first side is provided on the side surface of the first lower frame body.

[0023] The second frame includes a second lower frame body and a second upper frame body connected to the top of the second lower frame body. A second opening connected to the second side is provided on the side surface of the second lower frame body.

[0024] A flow guiding groove is formed among the first upper frame body, the photovoltaic panel, and the second upper frame body.

[0025] Optionally, the second opening connected to the first photovoltaic panel is aligned with the first opening connected to the second photovoltaic panel.

[0026] Optionally, a first abutting portion is provided on the top of the first upper frame body, and a second abutting portion is provided on the top of the second upper frame body. The waterproof cover plate is hermetically connected to the second abutting portion on the first photovoltaic panel and the first abutting portion on the second photovoltaic panel.

[0027] Optionally, the first abutting portion extends along the side facing away from the first opening, and the second abutting portion extends along the side facing away from the second opening.

[0028] Optionally, the sealing assembly further includes: a plurality of clamping members connected to the bottom surface of the waterproof cover plate and arranged at intervals. The clamping members extend into and are assembled between the second frame of the first photovoltaic panel and the first frame of the second photovoltaic panel and are clamped to the bottom of the first frame and the bottom of the second frame.

[0029] Optionally, the photovoltaic device further includes a first upper frame body assembled on the second photovoltaic panel and a second upper frame body assembled on the first photovoltaic panel, and a plurality of pressing block assemblies located below the first abutting portion and below the second abutting portion.

[0030] Optionally, the pressing block assemblies are staggered from the clamping members.

[0031] Optionally, a first pressing groove blocked by the first abutting portion is provided on the first upper frame body, and a second pressing groove blocked by the second abutting portion is provided on the second upper frame body. The pressing block assembly includes a pressing block. Pressing portions protruding downward are respectively provided on two opposite sides of the pressing block. One pressing portion presses in the first pressing groove, and the other pressing portion presses in the second pressing groove.

[0032] Optionally, the first lower frame body is provided with a first built-in cavity for accommodating a junction box; and / or

[0033] The second lower box body is provided with a second built-in cavity for accommodating a junction box.

[0034] 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.

[0035] Optionally, the photovoltaic device further includes:

[0036] A support member connected to the back surface of the photovoltaic panel;

[0037] A fireproof backboard provided on a side of the support member facing away from the photovoltaic panel and connected to the support member; and

[0038] A fireproof heat-insulating body filled between the photovoltaic panel and the fireproof backboard.

[0039] Optionally, the number of the support members is at least two, and they are dispersedly arranged.

[0040] Optionally, the support member has a hollow long-strip structure.

[0041] Optionally, the extending direction of the support member is parallel or perpendicular to the third side.

[0042] Optionally, the support member is an inverted triangular truss, the bottom surface of the triangular truss is connected to the back surface of the photovoltaic panel, and the apex angle of the triangular truss is connected to the fireproof backboard.

[0043] Optionally, the apex angle of the triangular truss is connected to the fireproof backboard through a plate-shaped connecting member, and the plate surface of the plate-shaped connecting member is parallel to the plate surface of the fireproof backboard.

[0044] Optionally, the cross-section along the direction perpendicular to the axis of the triangular truss is an isosceles triangle structure; and / or

[0045] A plurality of hollowed-out triangles are provided on the bottom surface and two side surfaces of the triangular truss.

[0046] Optionally, at least part of the fireproof heat-insulating body is filled in the support member.

[0047] Optionally, the fireproof backboard is connected to the bottom of the third frame and the bottom of the fourth frame.

[0048] The technical solution provided by the present disclosure has at least the following beneficial effects:

[0049] In the photovoltaic device provided by the present disclosure, the surface of at least one of the first connecting portion of the third frame and the second connecting portion of the fourth frame is set as a rough surface, which increases the connection force between the rough surface and the third seal, so that the third seal is firmly and effectively sealed between the first connecting portion and the second connecting portion, and further enables effective sealed connection between the third frame of the first photovoltaic panel and the fourth frame of the third photovoltaic panel through the third seal, making the photovoltaic device have excellent waterproof effect and durability. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 The figure shows a schematic structural diagram of a photovoltaic device provided by an embodiment of the present disclosure;

[0051] Figure 2 As shown in Figure 1 a schematic structural diagram of a photovoltaic panel in

[0052] Figure 3 As shown in Figure 1 a partial structural schematic diagram of the photovoltaic device in

[0053] Figure 4 As shown in Figure 3 a cross-sectional view taken along line B-B in

[0054] Figure 5 As shown in Figure 4 an enlarged schematic diagram of a partial structure in

[0055] Figure 6 As shown in Figure 4 another enlarged schematic diagram of a partial structure in

[0056] Figure 7 The figure shows a schematic structural diagram of the connection between the first photovoltaic panel and the third photovoltaic panel through the third seal;

[0057] Figure 8 As shown in Figure 3 a cross-sectional view taken along line A-A in

[0058] Figure 9 As shown in Figure 1 a schematic structural diagram of the connection between the first photovoltaic panel and the second photovoltaic panel through the sealing assembly in

[0059] Figure 10 The figure shows a schematic structural diagram of a waterproof cover plate and a clamping member provided by an embodiment of the present disclosure;

[0060] Figure 11 As shown in Figure 10 an enlarged schematic diagram of a partial structure in

[0061] Figure 12 The figure shows a schematic diagram of the staggering of the clamping member and the pressing block assembly provided by an embodiment of the present disclosure;

[0062] Figure 13 The figure shows a partial structural schematic diagram of the back of a photovoltaic device provided by an embodiment of the present disclosure;

[0063] Figure 14 As shown in Figure 13 a cross-sectional view taken along line C-C in

[0064] Figure 15 As shown in Figure 14 a partially enlarged schematic diagram of

[0065] Figure 16 The figure shows a structural schematic diagram after cutting along the axis direction of a triangular truss provided by an embodiment of the present disclosure;

[0066] Figure 17 The figure shows a partial structural schematic diagram of a triangular truss provided by an embodiment of the present disclosure along a first direction;

[0067] Figure 18 The figure shows a partial structural schematic diagram of a triangular truss provided by an embodiment of the present disclosure along a second direction;

[0068] Figure 19 The figure shows a partial structural schematic diagram of a triangular truss provided by an embodiment of the present disclosure along a third direction.

[0069] Among them, the reference numerals are as follows:

[0070] Photovoltaic panel - 110, first side - 101, second side - 102, third side - 103, fourth side - 104, first photovoltaic panel - 111, second photovoltaic panel - 112, third photovoltaic panel - 113, first frame - 120, first lower frame body - 121, first upper frame body - 122, first opening - 123, first abutting part - 124, first pressing groove - 125, first built-in cavity - 126, second frame - 130, second lower frame body - 131, second upper frame body - 132, second opening - 133, second abutting part - 134, second pressing groove - 135, second built-in cavity - 136, flow guide groove - 105, sealing assembly - 140, waterproof cover plate - 141, first seal - 142, second seal - 143, clamping part - 144, first clamping plate - 145, second clamping plate - 146, connecting part - 147, first buckle - 148, second buckle - 149, pressing block assembly - 150, pressing block - 151, pressing part - 152, screw - 153, third frame - 160, first connecting part - 161, third opening - 162, fourth frame - 170, second connecting part - 171, fourth opening - 172, rough surface - 106, third seal - 180, support part - 190, first connecting body - 191, second connecting body - 192, third connecting body - 193, fourth connecting body - 194, fireproof back plate - 200, fireproof insulation body - 210, plate-shaped connecting part - 220. Detailed implementation mode

[0071] In the related art, the frame of the photovoltaic device is a metal frame. After adjacent two photovoltaic panels are clamped by the frames, there are easily gaps between them, which makes it easy for liquids such as rainwater to flow in the gaps between the two frames and easily causes water leakage problems. Although a seal can be provided between adjacent two frames to achieve a sealing effect, however, under the scouring of rainwater, gaps are easily formed between the seal and the metal frame, which will also cause water leakage problems.

[0072] To solve the above problems, the embodiments of the present disclosure provide a photovoltaic device, which includes: a plurality of photovoltaic panels, each photovoltaic panel includes opposite third side and fourth side, and the photovoltaic panels include a first photovoltaic panel and a third photovoltaic panel; a third frame and a fourth frame respectively assembled on the third side and the fourth side of the photovoltaic panel, a first connecting part is provided on one side surface of the third frame, a second connecting part that can be matched and connected with the first connecting part is provided on one side surface of the fourth frame, and the surface of at least one of the first connecting part and the second connecting part is set as a rough surface; and a third seal sealed between the first connecting part assembled on the first photovoltaic panel and the second connecting part assembled on the third photovoltaic panel.

[0073] In the photovoltaic device provided by the embodiment of the present disclosure, at least one of the surface of the first connecting portion of the third frame and the second connecting portion of the fourth frame is set as a rough surface, which increases the connection force between the rough surface and the third seal, so that the third seal is firmly and effectively sealed between the first connecting portion and the second connecting portion, and further realizes effective sealing between the third frame of the first photovoltaic panel and the fourth frame of the third photovoltaic panel through the third seal, making the photovoltaic device have excellent waterproof effect and durability.

[0074] In order to understand the photovoltaic device provided by the embodiment of the present disclosure more clearly, the following embodiments are given:

[0075] Figure 1 , Figure 2 and Figure 3 the orientations of the respective photovoltaic panels in Figures 4 to 12 are the same, and "upper part", "top", "lower part", "bottom" are all based on the orientation in

[0076] The embodiment of the present disclosure provides a photovoltaic device, which may include: a photovoltaic panel 110, a first frame 120, a second frame 130, a sealing assembly 140, a third frame 160, a fourth frame 170, a third seal 180, a pressing block assembly 150, a support member 190, a fireproof backplane 200, and a fireproof heat insulation body 210.

[0077] With reference to Figure 1 and Figure 2 , the number of the photovoltaic panels 110 may be multiple, and each photovoltaic panel 110 includes opposite third sides 103 and fourth sides 104, a first side 101 connecting the third side 103 and the fourth side 104, and a second side 102 opposite to the first side 101. The photovoltaic panel 110 may include a first photovoltaic panel 111 and a third photovoltaic panel 113, and the third side 103 of the first photovoltaic panel 111 is assembled with the fourth side 104 of the third photovoltaic panel 113. The photovoltaic panel 110 may further include a second photovoltaic panel 112 adjacent to the first photovoltaic panel 111, and the second side 102 of the first photovoltaic panel 111 is assembled with the first side 101 of the second photovoltaic panel 112. The photovoltaic panel 110 may only include the first photovoltaic panel 111 and the third photovoltaic panel 113, or the photovoltaic panel 110 may only include the first photovoltaic panel 111, the second photovoltaic panel 112, and the third photovoltaic panel 113, or the number of the photovoltaic panels 110 is greater than three, such as Figure 1 shows four photovoltaic panels 110 in

[0078] Referring to Figure 3 , the third frame 160 and the fourth frame 170 are respectively assembled to the third side 103 and the fourth side 104 of each photovoltaic panel 110. Referring to Figure 4, on one side of the third frame 160, there is a first connecting portion 161, and on one side of the fourth frame 170, there is a second connecting portion 171 that can be matched and connected with the first connecting portion 161. The surface of at least one of the first connecting portion 161 and the second connecting portion 171 is set as a rough surface 106. Refer to Figure 5 , the surface of the first connecting portion 161 can be set as the rough surface 106, or the surface of the second connecting portion 171 can be set as the rough surface 106, or the surfaces of both the first connecting portion 161 and the second connecting portion 171 can be set as the rough surface 106. Among them, the rough surface 106 can be a frosted surface, or the rough surface 106 is provided with patterns or serrated structures, or other regular or irregular structures. Among them, the patterns can be strip patterns, circular patterns, square patterns, other regular or irregular structures.

[0079] Refer to Figure 6 and Figure 7 , the third seal 180 can be sealed between the first connecting portion 161 assembled on the first photovoltaic panel 111 and the second connecting portion 171 assembled on the third photovoltaic panel 113. When the surface of the first connecting portion 161 is set as the rough surface 106, the third seal 180 can be arranged on the second connecting portion 171; when the surface of the first connecting portion 161 is provided with the third seal 180, the surface of the second connecting portion 171 can be set as the rough surface 106. The third seal 180 can be bonded to the first connecting portion 161 or the second connecting portion 171. The third seal 180 can be a rubber part, and the material of the third seal 180 can be ethylene propylene diene monomer (EPDM) rubber material, which enables the third seal 180 to have good heat resistance and weather resistance. The first connecting portion 161 and the second connecting portion 171 can be connected by mortise and tenon joint, which is beneficial to increasing the connection force between the third frame 160 and the fourth frame 170. The first connecting portion 161 and the second connecting portion 171 can be set into various structures. Exemplarily, the first connecting portion 161 can be in a convex structure, and the second connecting portion 171 can be in a concave structure that matches the convex structure. The convex structure and the concave structure are simple and easy to process.

[0080] Continue to refer to Figure 4 and Figure 7, the number of the first connecting portions 161 and the second connecting portions 171 can both be multiple. The multiple first connecting portions 161 are dispersedly arranged on the side surface of the third frame 160 from top to bottom, and the multiple second connecting portions 171 are dispersedly arranged on the side surface of the fourth frame 170 from top to bottom. Through the matching connection of the multiple first connecting portions 161 and the multiple second connecting portions 171, the third frame 160 and the fourth frame 170 are firmly assembled. When the number of the first connecting portions 161 and the second connecting portions 171 is multiple, the rough surface 106 can cover the first connecting portions 161 and the area between two adjacent first connecting portions 161; and / or the rough surface 106 can cover the second connecting portions 171 and the area between two adjacent second connecting portions 171. In this way, the multiple first connecting portions 161 and the multiple second connecting portions 171 are respectively and matchedly connected, increasing the connection points between the side surface of the third frame 160 and the side surface of the fourth frame 170, which is beneficial to the firm assembly of the third frame 160 and the fourth frame 170. When the number of the first connecting portions 161 and the second connecting portions 171 is multiple, the third seal 180 can cover the first connecting portions 161 and the area between two adjacent first connecting portions 161; or the third seal 180 can cover the second connecting portions 171 and the area between two adjacent second connecting portions 171. In this way, by sealing the connection part between the third frame 160 and the fourth frame 170 from top to bottom through the third seal 180, an excellent sealing effect is achieved, enhancing the waterproof performance of the photovoltaic device.

[0081] After 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 part of the first connecting portion 161 at the uppermost part of the third frame 160 can block at least part of the second connecting portion 171 at the uppermost part of the fourth frame 170; or refer to Figure 7 , at least part of the second connecting portion 171 at the uppermost part of the fourth frame 170 can block at least part of the first connecting portion 161 at the uppermost part of the third frame 160. In this way, rainwater and the like are prevented from directly flushing the third seal 180 between the third frame 160 and the fourth frame 170, increasing the service life of the third seal 180.

[0082] Continue to refer to Figure 7 , a third opening 162 for connecting the third side 103 of the photovoltaic panel 110 is provided at the top of the side surface of the third frame 160 facing away from the first connecting portion 161, and a fourth opening 172 for connecting the fourth side 104 of the photovoltaic panel 110 is provided at the top of the side surface of the fourth frame 170 facing away from the second connecting portion 171. The third opening 162 connected to the first photovoltaic panel 111 is flush with the fourth opening 172 connected to the third photovoltaic panel 113. In this way, the adjacent first photovoltaic panel 111 and the third photovoltaic panel 113 are made flush, which is beneficial to making the photovoltaic device have a flat and beautiful surface.

[0083] Continue to refer to Figure 3 , the first frame 120 and the second frame 130 are respectively assembled to the first side 101 and the second side 102 of each photovoltaic panel 110. Refer to Figure 8 , the first frame 120 may include a first lower frame body 121 and a first upper frame body 122 connected to the top of the first lower frame body 121. A first opening 123 connected to the first side 101 may be provided on the side surface of the first lower frame body 121; the second frame 130 may include a second lower frame body 131 and a second upper frame body 132 connected to the top of the second lower frame body 131. A second opening 133 connected to the second side 102 may be provided on the side surface of the second lower frame body 131. It can be understood that since the first opening 123 on the side surface of the first lower frame body 121 and the second opening 133 on the side surface of the second lower frame body 131 are respectively connected to the first side 101 and the second side 102 of the photovoltaic panel 110, this makes both the first upper frame body 122 and the second upper frame body 132 protrude upward from the surface of the photovoltaic panel 110, and a flow guiding groove 105 is formed between the first upper frame body 122, the photovoltaic panel 110 and the second upper frame body 132. The cross-section of the flow guiding groove 105 is similar to a "U-shaped structure", which is beneficial to accelerating the discharge of rainwater and the like through the flow guiding groove 105 and reducing the residence time of rainwater on the photovoltaic panel 110, the first frame 120 and the second frame 130. In the related art, a first opening is provided at the top of the side surface of the first frame, and a second opening is provided at the top of the side surface of the second frame. In this way, a flow guiding groove with a "U-shaped structure" cannot be formed between the first frame above the photovoltaic panel, the second frame above the photovoltaic panel and the photovoltaic panel, and rainwater can flow irregularly on the photovoltaic panel, the first frame and the second frame. This is not conducive to drainage, and rainwater is likely to stay and leak between the first frame and the second frame. Through the cooperation of the first frame 120, the second frame 130 and the photovoltaic panel 110 provided by the embodiments of the present disclosure, it is beneficial to drainage and enables the photovoltaic device to have excellent waterproof effect.

[0084] Combined with reference to Figure 1 and Figure 9 , the sealing assembly 140 can be sealed between the second frame 130 assembled to the first photovoltaic panel 111 and the first frame 120 assembled to the second photovoltaic panel 112. The sealing assembly 140 may include a waterproof cover plate 141, a first seal 142, a second seal 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 as to prevent rainwater and the like from entering the gap between the first frame 120 and the second frame 130, and improve the waterproof effect and durability of the photovoltaic device. Refer to Figure 1, the waterproof cover plate 141 can be arranged to extend in a direction parallel to the first frame 120, presenting a strip-like structure to effectively block the gap between the first frame 120 and the second frame 130. The cross-section of the waterproof cover plate 141 in a direction perpendicular to the first frame 120 can be in a structure similar to an umbrella shape, referring to Figure 9 , which avoids the accumulation of rainwater on the waterproof cover plate 141 and facilitates drainage. Continuing to refer to Figure 8 and Figure 9 , a first abutting portion 124 can be provided at the top of the first upper frame body 122, and a second abutting portion 134 can be provided at the top of the second upper frame body 132. The waterproof cover plate 141 can be 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. By providing the first abutting portion 124 and the second abutting portion 134, it is convenient for positioning and assembling the waterproof cover plate 141 between the first frame 120 and the second frame 130. The first abutting portion 124 can extend along a side facing away from the first opening 123, and the first abutting portion 124 can be formed by the side wall of the first upper frame body 122 extending. The second abutting portion 134 can extend along a side facing away from the second opening 133, and the second abutting portion 134 can be formed by the side wall of the second upper frame body 132 extending. In this way, when 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 to facilitate accommodating other components.

[0085] Continuing to refer to Figure 9, the first seal 142 can be sealed between the top of the first frame 120 and the waterproof cover plate 141, and the second seal 143 can be sealed between the top of the second frame 130 and the waterproof cover plate 141 to effectively prevent rainwater from entering between the first frame 120 and the second frame 130. Specifically, the first abutting portion 124 of the first upper frame body 122 can be hermetically connected to the bottom surface of the waterproof cover plate 141 through the first seal 142; the second abutting portion 134 of the second upper frame body 132 can be hermetically connected to the bottom surface of the waterproof cover plate 141 through the second seal 143. This prevents liquid such as rainwater from entering between the first frame 120 and the second frame 130 through the gaps between the first upper frame body 122 and the waterproof cover plate 141 and between the second upper frame body 132 and the waterproof cover plate 141. The cooperation of the waterproof cover plate 141, the first seal 142, and the second seal 143 enhances the waterproof effect. The first seal 142 and the second seal 143 can be rubber parts. For example, the materials of the first seal 142 and the second seal 143 can be ethylene propylene diene monomer (EPDM) rubber materials, which not only have waterproof properties but also excellent heat resistance, weather resistance, and other aging resistance properties, improving the heat resistance, weather resistance, and other properties of the first seal 142 and the second seal 143. The first seal 142 and the second seal 143 can be respectively bonded to the first abutting portion 124 and the second abutting portion 134, or can be respectively limited in the limiting grooves of the first abutting portion 124 and the second abutting portion 134. The present disclosure does not make specific limitations on this.

[0086] Reference Figure 10 , a plurality of clamping members 144 can be connected to the bottom surface of the waterproof cover plate 141 and are arranged at intervals. The clamping members 144 can extend into and be clamped between the second frame 130 of the first photovoltaic panel 111 and the first frame 120 of the first photovoltaic panel 111 and are clamped to the bottom of the first frame 120 and the bottom of the second frame 130, which makes the waterproof cover plate 141 firmly assembled on the first upper frame body 122 and the second upper frame body 132. Exemplarily, with reference to Figure 9 and Figure 11 , the clamping member 144 can 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. The bottom of the first clamping plate 145 is provided with a first buckle 148 for clamping the first lower frame body 121 in the direction away from the second clamping plate 146, and the bottom of the second clamping plate 146 is provided with a second buckle 149 for clamping the second lower frame body 131 in the direction away from the first clamping plate 145.

[0087] A plurality of pressing block assemblies 150 can be assembled on the first upper frame 122 of the second photovoltaic panel 112 and the second upper frame 132 of the first photovoltaic panel 111, and are located below the first abutting portion 124 and below the second abutting portion 134. Since the pressing block assemblies 150 are located below the first abutting portion 124 and below the second abutting portion 134, the waterproof cover plate 141, the first seal 142, and the second seal 143 seal the pressing block assemblies 150 inside, preventing rainwater and the like from flowing through the pressing block assemblies 150. The pressing block assemblies 150 are used to fixedly connect the first frame 120 and the second frame 130 to a bracket or other components located below the photovoltaic device, thereby fixing the photovoltaic device to a building surface such as a roof. Refer to Figure 12 , the pressing block assemblies 150 and the clamping members 144 can be staggered. During assembly, the pressing block assemblies 150 are first assembled with the adjacent first frame 120 and second frame 130, and then the clamping members 144 of the sealing assembly 140 are clamped between the adjacent first frame 120 and second frame 130. The pressing block assemblies 150 do not affect the insertion of the clamping members 144 between the first frame 120 and the second frame 130, facilitating the assembly between the clamping members 144 and the first frame 120 and the second frame 130. Exemplarily, continue to refer to Figure 9 , the first upper frame 122 can be provided with a first pressing groove 125 blocked by the first abutting portion 124, and the second upper frame 132 can be provided with a second pressing groove 135 blocked by the second abutting portion 134. The pressing block assembly 150 includes a pressing block 151, and downwardly protruding pressing portions 152 are respectively provided on opposite sides of the pressing block 151. One pressing portion 152 is pressed in the first pressing groove 125, and the other pressing portion 152 is pressed in the second pressing groove 135. With such a setting, it is convenient to accurately assemble the pressing block 151 on the first upper frame 122 and the second upper frame 132. Continue to refer to Figure 12 , the pressing block assembly 150 can further include a screw 153 connected to the pressing block 151. The screw 153 passes through the pressing block 151 and is connected to a bracket or other components below the photovoltaic device to fix the photovoltaic device.

[0088] Continue to refer to Figure 8 , the first lower frame 121 is provided with a first built-in cavity 126 for accommodating a junction box; and / or the second lower frame 131 is provided with a second built-in cavity 136 for accommodating a junction box. In this way, it is convenient to design other film layer structures on the back of the photovoltaic panel 110, avoiding the influence of the junction box located on the back of the photovoltaic panel 110 on the design of other structures, such as the support member 190, the fireproof back plate 200, and the fireproof insulation body 210 mentioned later. The first lower frame 121 and the second lower frame 131 can also be provided with holes or grooves for passing out the leads connecting the junction box.

[0089] In the related art, after the first frame on the second photovoltaic panel and the second frame on the first photovoltaic panel are assembled, the second opening connected to the first photovoltaic panel and the first opening connected to the second photovoltaic panel are not aligned. This causes a step between the first photovoltaic panel and the second photovoltaic panel, where rainwater is likely to accumulate at the step position, which is not conducive to drainage. Moreover, it is necessary to use a bracket with an irregular structure to support the first photovoltaic panel and the second photovoltaic panel, resulting in cumbersome assembly and increased costs. In the embodiments of the present disclosure, continue to refer to Figure 9 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 to say, 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 the same plane, which makes the surface of the photovoltaic device flat and beautiful, and is conducive to the drainage of rainwater through the drainage channel 105.

[0090] Continue to refer to Figure 3 The length of the first frame 120 and the length of the second frame 130 can both 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 can both be greater than the length of the fourth frame 170. That is, the first frame 120 and the second frame 130 are long frames, and the third frame 160 and the fourth frame 170 are short frames. Of course, the first frame 120 and the second frame 130 can also be short frames, and the third frame 160 and the fourth frame 170 can be long frames.

[0091] Combined with reference to Figure 13 and Figure 14 The support member 190 can be connected to the back surface of the photovoltaic panel 110 to improve the stress performance of the photovoltaic panel 110. The number of support members 190 is at least two and is dispersedly arranged, thus improving the stress performance of each position of the photovoltaic panel 110. The structure of the support member 190 can be designed in various ways. To reduce the mass of the photovoltaic device, the support member 190 can be in the form of a hollow long strip structure. The extending direction of the support member 190 can be parallel or perpendicular to the third side 103 of the photovoltaic panel 110, which improves the stress performance of the photovoltaic device in the direction parallel or perpendicular to the third side 103. The support member 190 can be in the form of a square tube structure, a trapezoidal tube structure, or other regular or irregular structures. Exemplarily, referring to Figure 14 or Figure 15 The support member 190 can 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 performance, and the bottom surface of the triangular truss fits the back surface of the photovoltaic panel 110, increasing the support area for the photovoltaic device and being conducive to improving the stress performance of the photovoltaic device. Among them, the cross-section along the direction perpendicular to the axis of the triangular truss can be triangular, that is, the triangular truss is in the form of a hollow triangular long strip structure. Continue to refer to Figure 14 or Figure 15, the cross-section along the direction perpendicular to the axis of the triangular truss can be an isosceles triangle structure, which makes the stress-bearing performance of the two sides of the triangular truss the same, facilitating the improvement of the structural stability performance of the photovoltaic device. Refer to Figure 16 , Figure 17 , Figure 18 and Figure 19 , a plurality of hollow triangles are provided on the bottom surface and the two side surfaces of the triangular truss, which not only helps to reduce the mass of the triangular truss, but also increases the structural stability performance of the triangular truss. The hollow triangles on the bottom surface and the side surfaces of the triangular truss can be the same or different. Exemplarily, continue to refer to Figure 17 , the bottom surface of the triangular truss is provided with a first connecting body 191 perpendicular to the edge of the bottom surface, and a second connecting body 192 forming an acute angle with the edge of the bottom surface. A hollow right triangle is formed between the first connecting body 191, the second connecting body 192 and the edge of the bottom surface. A hollow isosceles triangle is formed between two adjacent second connecting bodies 192 and the edge of the bottom surface. The structures of the two side surfaces of the triangular truss can be the same. Continue to refer to Figure 18 and Figure 19 , the side surface of the triangular truss is provided with a third connecting body 193 and a fourth connecting body 194 forming an acute angle with the edge of the side surface. A hollow triangle is formed between the third connecting body 193, the fourth connecting body 194 and the edge of the bottom surface. Among them, the area of the hollow triangle on the bottom surface of the triangular truss can be smaller than the area of the hollow triangle on the side surface, which enables the bottom surface of the triangular truss to have excellent stress-bearing performance, and further enables the photovoltaic module to have excellent stress-bearing performance.

[0092] Continue to refer to Figure 14 and Figure 15 , the fire-resistant backplane 200 can be disposed on the side of the support member 190 facing away from the photovoltaic panel 110 and connected to the support member 190. When the support member 190 is a triangular truss, the apex angle of the triangular truss is connected to the fire-resistant backplane 200. Exemplarily, refer to Figure 15, the apex angle of the triangular truss is connected to the fire-resistant backboard 200 through a plate-shaped connecting member 220. The plate surface of the plate-shaped connecting member 220 is parallel to the plate surface of the fire-resistant backboard 200 to increase the connection area with the fire-resistant backboard 200, which is beneficial to the stable connection between the fire-resistant backboard 200 and the triangular truss. Among them, the plate-shaped connecting member 220 can be in the structure of a long strip plate body or multiple block structures arranged dispersedly. The plate-shaped connecting member 220 can be welded to the triangular truss, or a first limiting groove can be provided on the plate surface of the plate-shaped connecting member 220, and the apex angle of the triangular truss is limited in the first limiting groove, or the plate-shaped connecting member 220 is integrally formed with the triangular truss, or the plate-shaped connecting member 220 is connected to the triangular truss through connecting members such as screws. The plate-shaped connecting member 220 can be adhesively connected to the backboard, or the plate-shaped connecting member 220 can be welded to the fire-resistant backboard 200, or a second limiting groove can be provided on the plate surface of the fire-resistant backboard 200, and a part of the plate-shaped connecting member 220 is limited in the second limiting groove, or the plate-shaped connecting member 220 is integrally formed with the fire-resistant backboard 200, or the plate-shaped connecting member 220 is connected to the fire-resistant backboard 200 through connecting members such as screws. The fire-resistant backboard 200 is a plate-shaped structure made of fire-resistant materials. The fire-resistant materials can be metals, and the fire-resistant backboard 200 can be a metal backboard. The fire-resistant backboard 200 can be connected to the bottom of the first frame 120 and the bottom of the second frame 130, such as by welding, which makes the connection between the fire-resistant backboard 200 and the first frame 120 and the second frame 130 stable. The fire-resistant backboard 200 can also be connected to the first frame 120 and the second frame 130 through connecting members such as screws. The present disclosure does not make specific limitations on this. The fire-resistant backboard 200 can also be connected to the bottom of the third frame 160 and the bottom of the fourth frame 170, such as by welding.

[0093] Continue to refer to Figure 14 or Figure 15 , a fire-resistant and heat-insulating body 210 is filled between the photovoltaic panel 110 and the fire-resistant backboard 200, which makes the photovoltaic device have fire-resistant and heat-insulating properties. The fire-resistant and heat-insulating body 210 can be granular, or in a layered structure, or other regular or irregular structures. Exemplarily, the material of the fire-resistant and heat-insulating body 210 can be rubber sponge heat-insulating material or foamed fireproof heat-insulating material. At least part of the fire-resistant and heat-insulating body 210 can be filled in the support member 190, which makes the position of the support member 190 provided in the photovoltaic device also have good heat-insulating properties. Further, the fire-resistant and heat-insulating body 210 can also be filled in the hollow triangle of the triangular truss, so as to ensure that the position of the support member 190 provided in the photovoltaic device has good heat-insulating properties and make the entire photovoltaic device have uniform heat-insulating properties.

[0094] Based on the above, for the photovoltaic device provided by the embodiments of the present disclosure, after the first photovoltaic panel 111 and the second photovoltaic panel 112 are assembled, they are sealed between the second frame 130 and the first frame 120 based on the sealing assembly 140, and the waterproof cover plate 141 of the sealing assembly 140 is assembled on the first frame 120 and the second frame 130 to prevent rainwater and the like 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, they are sealed between the third frame 160 and the fourth frame 170 based on the third seal 180, which prevents rainwater and the like from entering between the third frame 160 and the fourth frame 170. Combining with the sealing between the first frame 120 and the second frame 130, the entire surface of the photovoltaic device has waterproof and weather resistance properties. By providing the support member 190, the fireproof insulation body 210, and the fireproof back plate 200 on the back of the photovoltaic panel 110, the photovoltaic device has excellent mechanical properties, fire resistance, and heat insulation properties.

[0095] Any of the above photovoltaic devices provided by the embodiments of the present disclosure can be applied to building integrated photovoltaics. The photovoltaic device has excellent waterproof, weather resistance, mechanical, heat insulation, and fire resistance properties, and can meet the requirements of buildings. For example, the photovoltaic device can be assembled on the roof of a building.

[0096] The embodiments of the present disclosure also provide the following technical solutions:

[0097] Technical solution 1: A photovoltaic device, the photovoltaic device includes:

[0098] A plurality of photovoltaic panels, each photovoltaic panel includes opposite third and fourth sides, and the photovoltaic panels include a first photovoltaic panel and a third photovoltaic panel;

[0099] A third frame and a fourth frame respectively assembled on the third and fourth sides of the photovoltaic panel, a first connection portion is provided on one side surface of the third frame, a second connection portion that can be matched and connected with the first connection portion is provided on one side surface of the fourth frame, and at least one of the surfaces of the first connection portion and the second connection portion is set as a rough surface; and

[0100] A third seal that seals between the first connection portion assembled on the first photovoltaic panel and the second connection portion assembled on the third photovoltaic panel.

[0101] Technical solution 2: The photovoltaic device according to technical solution 1, wherein the rough surface is a frosted surface, or the rough surface is provided with patterns or serrated structures, and the third seal is a rubber member; and / or

[0102] The first connection portion and the second connection portion are connected by tenon and mortise fit.

[0103] Technical solution 3: The photovoltaic device according to technical solution 1, wherein the number of the first connecting portions and the number of the second connecting portions are both multiple. The multiple first connecting portions are dispersedly arranged on the side surface of the third frame from top to bottom, and the multiple second connecting portions are dispersedly arranged on the side surface of the fourth frame from top to bottom.

[0104] Technical solution 4: The photovoltaic device according to technical solution 3, wherein the rough surface covers the first connecting portion and the area between two adjacent first connecting portions; and / or the rough surface covers the second connecting portion and the area between two adjacent second connecting portions.

[0105] Technical solution 5: The photovoltaic device according to technical solution 3, wherein the third seal covers the first connecting portion and the area between two adjacent first connecting portions; or the third seal covers the second connecting portion and the area between two adjacent second connecting portions.

[0106] Technical solution 6: The photovoltaic device according to technical solution 1, wherein at least a part of the first connecting portion at the uppermost part of the third frame blocks at least a part of the second connecting portion at the uppermost part of the fourth frame; or at least a part of the second connecting portion at the uppermost part of the fourth frame blocks at least a part of the first connecting portion at the uppermost part of the third frame.

[0107] Technical solution 7: The photovoltaic device according to technical solution 1, wherein the first connecting portion has a convex structure, and the second connecting portion has a concave structure matching the convex structure.

[0108] Technical solution 8: The photovoltaic device according to technical solution 1, wherein a third opening connecting the third side of the photovoltaic panel is provided at the top of the side surface of the third frame facing away from the first connecting portion, and a fourth opening connecting the fourth side of the photovoltaic panel is provided at the top of the side surface of the fourth frame facing away from the second connecting portion. The third opening connected to the first photovoltaic panel is flush with the fourth opening connected to the third photovoltaic panel.

[0109] Technical solution 9: The photovoltaic device according to technical solution 1, wherein the photovoltaic panel further includes a second photovoltaic panel adjacent to the first photovoltaic panel. The photovoltaic panel further includes a first side connecting the third side and the fourth side and a second side opposite to the first side;

[0110] The photovoltaic device further includes a first frame and a second frame respectively assembled on the first side and the second side, and a sealing component sealed between the second frame assembled on the first photovoltaic panel and the first frame assembled on the second photovoltaic panel.

[0111] Technical Solution 10: According to the photovoltaic device described in Technical Solution 9, the sealing assembly includes a waterproof cover plate assembled on the first frame and the second frame.

[0112] Technical Solution 11. According to the photovoltaic device described in Technical Solution 10, the sealing assembly also includes: a first seal sealed between the top of the first frame and the waterproof cover plate, and a second seal sealed between the top of the second frame and the waterproof cover plate.

[0113] Technical Solution 12: According to the photovoltaic device described in Technical Solution 11, the first sealing member and the second sealing member are both rubber members.

[0114] Technical solution 13: According to the photovoltaic device of technical solution 10, the first frame includes a first lower frame and a first upper frame connected to the top of the first lower frame, and a first opening connected to the first side is provided on a side of the first lower frame;

[0115] The second frame includes a second lower frame body and a second upper frame body connected to the top of the second lower frame body, and a second opening connected to the second side is provided on a side surface of the second lower frame body;

[0116] A flow guide groove is formed between the first upper frame, the photovoltaic panel and the second upper frame.

[0117] Technical Solution 14: According to the photovoltaic device described in Technical Solution 13, the second opening connected to the first photovoltaic panel is aligned with the first opening connected to the second photovoltaic panel.

[0118] Technical Solution 15. According to the photovoltaic device described in Technical Solution 13, a first top connection portion is provided on the top of the first upper frame, a second top connection portion is provided on the top of the second upper frame, and the waterproof cover plate is sealingly connected to the second top connection portion on the first photovoltaic panel and the first top connection portion on the second photovoltaic panel.

[0119] Technical Solution 16: According to the photovoltaic device described in Technical Solution 15, the first top-connecting portion extends along a side facing away from the first opening, and the second top-connecting portion extends along a side facing away from the second opening.

[0120] Technical Solution 17. According to the photovoltaic device described in Technical Solution 15, the sealing assembly also includes: a plurality of clips connected to the bottom surface of the waterproof cover and arranged at intervals, the clips extending between the second frame assembled on the first photovoltaic panel and the first frame assembled on the second photovoltaic panel and clipped to the bottom of the first frame and the bottom of the second frame.

[0121] Technical solution 18. The photovoltaic device according to technical solution 17, wherein the photovoltaic device further comprises a first upper frame assembled on the second photovoltaic panel, a second upper frame on the first photovoltaic panel, and a plurality of pressing block assemblies located below the first abutting portion and below the second abutting portion.

[0122] Technical solution 19. The photovoltaic device according to technical solution 18, wherein the pressing block assembly is offset from the clamping member.

[0123] Technical solution 20. The photovoltaic device according to technical solution 18, wherein the first upper frame is provided with a first pressing groove shielded by the first abutting portion, the second upper frame is provided with a second pressing groove shielded by the second abutting portion, the pressing block assembly includes a pressing block, and two opposite sides of the pressing block are respectively provided with downwardly protruding pressing portions, one of the pressing portions is pressed in the first pressing groove, and the other pressing portion is pressed in the second pressing groove.

[0124] Technical solution 21. The photovoltaic device according to technical solution 13, wherein the first lower frame is provided with a first built-in cavity for accommodating a junction box; and / or

[0125] The second lower frame is provided with a second built-in cavity for accommodating a junction box.

[0126] Technical solution 22. The photovoltaic device according to technical solution 9, wherein the lengths of the first frame and the second frame are both greater than the length of the third frame, and the lengths of the first frame and the second frame are both greater than the length of the fourth frame.

[0127] Technical solution 23. The photovoltaic device according to technical solution 1, wherein the photovoltaic device further comprises:

[0128] A support member connected to the back surface of the photovoltaic panel;

[0129] A fireproof backboard provided on the side of the support member facing away from the photovoltaic panel and connected to the support member; and

[0130] A fireproof heat-insulating body filled between the photovoltaic panel and the fireproof backboard.

[0131] Technical solution 24. The photovoltaic device according to technical solution 23, wherein the number of the support members is at least two and they are dispersedly arranged.

[0132] Technical solution 25. The photovoltaic device according to technical solution 23, wherein the support member has a hollow long strip structure.

[0133] Technical solution 26. The photovoltaic device according to technical solution 25, wherein the extending direction of the support member is parallel or perpendicular to the third side.

[0134] Technical solution 27. The photovoltaic device according to technical solution 23, wherein the support member is an inverted triangular truss, the bottom surface of the triangular truss is connected to the back surface of the photovoltaic panel, and the apex angle of the triangular truss is connected to the fireproof backplane.

[0135] Technical solution 28. The photovoltaic device according to technical solution 27, wherein the apex angle of the triangular truss is connected to the fireproof backplane through a plate-shaped connecting member, and the plate surface of the plate-shaped connecting member is parallel to the plate surface of the fireproof backplane.

[0136] Technical solution 29. The photovoltaic device according to technical solution 27, wherein the cross-section along the direction perpendicular to the axis of the triangular truss is an isosceles triangle structure; and / or

[0137] A plurality of hollow triangles are provided on the bottom surface and both side surfaces of the triangular truss.

[0138] Technical solution 30. The photovoltaic device according to technical solution 25, wherein at least part of the fireproof and heat-insulating body is filled in the support member.

[0139] Technical solution 31. The photovoltaic device according to technical solution 23, wherein the fireproof backplane is connected to the bottom of the third frame and the bottom of the fourth frame.

[0140] In the above-mentioned various embodiments of the present disclosure, without conflict, they can complement each other.

[0141] The above are only the preferred embodiments of the present disclosure and are not intended to limit the present disclosure. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present disclosure shall be included within the scope of protection of the present disclosure.

Claims

1. A photovoltaic device, characterized in that, The photovoltaic device includes: a plurality of photovoltaic panels, each of the photovoltaic panels including opposite third and fourth sides, and the photovoltaic panels including a first photovoltaic panel and a third photovoltaic panel; a third frame and a fourth frame respectively assembled to the third and fourth sides of the photovoltaic panel, a first connection portion being provided on one side surface of the third frame, a second connection portion being provided on one side surface of the fourth frame and being capable of matingly connecting with the first connection portion, and at least one of the surfaces of the first connection portion and the second connection portion being provided as a rough surface; and a third sealant sealed between the first connection portion assembled to the first photovoltaic panel and the second connection portion assembled to the third photovoltaic panel; the photovoltaic panel further includes a second photovoltaic panel adjacent to the first photovoltaic panel, the photovoltaic panel further including a first side connecting the third side and the fourth side and a second side opposite to the first side; the photovoltaic device further includes a first frame and a second frame respectively assembled to the first side and the second side; the first frame includes a first lower frame body and a first upper frame body connected to the top of the first lower frame body, and a first opening for connecting to the first side is provided on a side surface of the first lower frame body; the second frame includes a second lower frame body and a second upper frame body connected to the top of the second lower frame body, and a second opening for connecting to the second side is provided on a side surface of the second lower frame body; a flow guiding groove is formed between the first upper frame body, the photovoltaic panel, and the second upper frame body.

2. The photovoltaic device according to claim 1, wherein, The rough surface is a frosted surface, or the rough surface is provided with patterns or serrated structures, and the third sealant is a rubber member; and / or The first connection portion and the second connection portion are connected by mortise and tenon fitting.

3. The photovoltaic device according to claim 1, wherein, The number of both the first connection portion and the second connection portion is multiple, and the multiple first connection portions are dispersedly provided on the side surface of the third frame from top to bottom, and the multiple second connection portions are dispersedly provided on the side surface of the fourth frame from top to bottom.

4. The photovoltaic device according to claim 3, characterized in that The rough surface covers the first connection portion and the area between two adjacent first connection portions; and / or the rough surface covers the second connection portion and the area between two adjacent second connection portions.

5. The photovoltaic device according to claim 3, characterized in that, The third sealant covers the first connection portion and the area between two adjacent first connection portions; or the third sealant covers the second connection portion and the area between two adjacent second connection portions.

6. The photovoltaic device according to claim 1, characterized in that At least a part of the first connection portion at the uppermost position of the third frame shields at least a part of the second connection portion at the uppermost position of the fourth frame; or at least a part of the second connection portion at the uppermost position of the fourth frame shields at least a part of the first connection portion at the uppermost position of the third frame.

7. The photovoltaic device according to claim 1, characterized in that, The first connection portion has a convex structure, and the second connection portion has a concave structure matching the convex structure.

8. The photovoltaic device according to claim 1, characterized in that, A third opening for connecting to the third side of the photovoltaic panel is provided at the top of the side surface of the third frame facing away from the first connection portion, a fourth opening for connecting to the fourth side of the photovoltaic panel is provided at the top of the side surface of the fourth frame facing away from the second connection portion, and the third opening connected to the first photovoltaic panel is flush with the fourth opening connected to the third photovoltaic panel.

9. The photovoltaic device according to claim 1, wherein The photovoltaic device further includes a sealing assembly sealed between a second frame assembled on the first photovoltaic panel and a first frame assembled on the second photovoltaic panel; The sealing assembly includes a waterproof cover plate assembled on the first frame and the second frame; The sealing assembly further includes: a first seal member sealed between the top of the first frame and the waterproof cover plate, and a second seal member sealed between the top of the second frame and the waterproof cover plate; Both the first seal member and the second seal member are rubber members.

10. The photovoltaic device according to claim 9, characterized in that, The second opening connected to the first photovoltaic panel is aligned with the first opening connected to the second photovoltaic panel.

11. The photovoltaic device according to claim 10, wherein, A first abutting portion is provided at the top of the first upper frame body, a second abutting portion is provided at the top of the second upper frame body, and the waterproof cover plate is sealingly connected to the second abutting portion on the first photovoltaic panel and the first abutting portion on the second photovoltaic panel.

12. The photovoltaic device according to claim 11, characterized in that, 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.

13. The photovoltaic device according to claim 12, characterized in that, The sealing assembly further includes: a plurality of clamping members connected to the bottom surface of the waterproof cover plate and arranged at intervals, and the clamping members extend into and are clamped between the second frame assembled on the first photovoltaic panel and the first frame assembled on the second photovoltaic panel and are clamped to the bottom of the first frame and the bottom of the second frame.

14. The photovoltaic device according to claim 13, characterized in that, The photovoltaic device further includes 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 below the second abutting portion.

15. The photovoltaic device according to claim 14, characterized in that, The pressing block assembly is staggered from the clamping member.

16. The photovoltaic device according to claim 14, characterized in that, The first upper frame body is provided with a first pressing groove blocked by the first abutting portion, the second upper frame body is provided with a second pressing groove blocked by the second abutting portion, the pressing block assembly includes a pressing block, and downwardly protruding pressing portions are respectively provided on two opposite sides of the pressing block, one pressing portion presses in the first pressing groove, and the other pressing portion presses in the second pressing groove.

17. The photovoltaic device according to claim 1, characterized in that 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 a junction box.

18. The photovoltaic device according to claim 1, 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.

19. The photovoltaic device according to claim 1, characterized in that, The photovoltaic device further includes: A support member connected to the back surface of the photovoltaic panel; A fireproof back plate provided on a side of the support member facing away from the photovoltaic panel and connected to the support member; and A fireproof heat-insulating body filled between the photovoltaic panel and the fireproof back plate.

20. The photovoltaic device according to claim 19, wherein The number of the support members is at least two and they are dispersedly arranged.

21. The photovoltaic device according to claim 19, wherein, The support member has a hollow long strip structure.

22. The photovoltaic device according to claim 21, wherein The extending direction of the support member is parallel or perpendicular to the third side.

23. The photovoltaic device according to claim 19, characterized in that, The support member is an inverted triangular truss, the bottom surface of the triangular truss is connected to the back surface of the photovoltaic panel, and the apex angle of the triangular truss is connected to the fireproof back plate.

24. The photovoltaic device according to claim 23, characterized in that, The apex angle of the triangular truss is connected to the refractory backplate through a plate-shaped connecting piece, and the plate surface of the plate-shaped connecting piece is parallel to the plate surface of the refractory backplate.

25. The photovoltaic device according to claim 23, characterized in that, The cross-section along the direction perpendicular to the axis of the triangular truss is an isosceles triangle structure; and / or A plurality of hollowed-out triangles are provided on the bottom surface and the two side surfaces of the triangular truss.

26. The photovoltaic device according to claim 19, wherein, At least a part of the refractory heat-insulating body is filled in the support member.

27. The photovoltaic device according to claim 19, characterized in that, The refractory backplate is connected to the bottom of the third frame and the bottom of the fourth frame.

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