Light photovoltaic power generation device

Abstract

The invention discloses a light-weight photovoltaic power generation device, and the device comprises a photovoltaic laminated board. The frame assembly comprises a first frame profile and sealing strips, the frame profile comprises a side clamping part, a lower supporting part and an assembling part, the side clamping part and the lower supporting part are in sealed connection with the side wall and the bottom wall of the photovoltaic laminated board through the sealing strips respectively, and the face, back to the photovoltaic assembly, of the side clamping part is an outer side face; the lower supporting part and the assembling part are located on the side, adjacent to the photovoltaic laminated board, of the outer side face. And the fastening assembly is used for locking the assembling part on the photovoltaic bracket. In the light photovoltaic power generation device, the side clamping part and the lower supporting part are hermetically connected with the side wall and the bottom wall of the photovoltaic laminated plate through the sealing strips, so that the top edge of the photovoltaic laminated plate is prevented from being shielded, the photovoltaic power generation capacity is ensured, and meanwhile, water drainage and ash discharge are facilitated; and the lower support part and the assembly part of the frame profile are both located on the surface, adjacent to the photovoltaic laminated board, of the outer side surface, so that the occupied area is reduced, the photovoltaic devices are tightly arranged conveniently, the laying amount is increased, and the overall photovoltaic generating capacity is improved.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic power generation, and in particular to a lightweight photovoltaic power generation device. Background Art

[0002] Photovoltaic module refers to the smallest indivisible photovoltaic cell combination device based on battery integration, packaging and internal connections, which can independently provide DC power output. It is also called solar cell module and is the core part of photovoltaic power generation system.

[0003] The outer periphery of existing photovoltaic modules is usually packaged with aluminum frame profiles. In order to ensure sealing, the frame profile usually has an assembly groove with the same length as the profile itself, for the side wall and sealing strip of the photovoltaic laminate to be inserted to ensure sealing. However, the upper side wall of the assembly groove will partially block the light-receiving surface of the photovoltaic module, resulting in a decrease in the amount of sunlight received by the photovoltaic module, thereby affecting the power generation. In addition, water and dust are easily accumulated on the upper part of the assembly groove. After long-term water accumulation, water molecules can easily penetrate the inner wall of the sealing strip and then enter the battery layer of the photovoltaic laminate, affecting the power generation. Long-term dust accumulation will also block the photovoltaic laminate from receiving light. In addition, in order to facilitate the fixed installation of the frame profile on the photovoltaic bracket, the bottom of the frame profile usually extends outward, so that the photovoltaic module as a whole occupies a larger laying area, reducing the number of modules that can be laid on the bracket, thereby reducing the overall power generation.

[0004] Therefore, it is necessary to improve the photovoltaic modules in the prior art. Summary of the invention

[0005] The purpose of the present invention is to overcome the defects in the prior art and provide a lightweight photovoltaic power generation device.

[0006] In order to achieve the above technical effects, the technical solution of the present invention is: a lightweight photovoltaic power generation device, comprising: A photovoltaic laminate, comprising a front glass layer, a front adhesive film layer, a battery layer, a back adhesive film layer and a back glass layer which are sequentially laminated and connected; A frame assembly, the frame assembly comprising a frame profile connected in sequence from end to end, and a sealing strip flush with the end of the frame profile and being elastic, the frame profile comprising a side clamping portion, a lower supporting portion and an assembly portion connected in sequence from top to bottom, the side clamping portion and the lower supporting portion are respectively sealed to the side wall and the bottom wall of the photovoltaic laminate through the sealing strip, the side clamping portion is located below the plane where the top surface of the front glass layer is located, the side of the side clamping portion facing away from the photovoltaic assembly is the outer side surface, and the lower supporting portion and the assembly portion are both located on the side of the outer side surface adjacent to the photovoltaic laminate; A fastening assembly is used to lock the assembly part on the photovoltaic bracket, and the fastening assembly includes a threaded fastening bolt and a fastening nut.

[0007] Preferably, in order to facilitate fixing the frame profile on the photovoltaic bracket, the assembly part is also provided with a fastening slot which is in the same length direction as the frame profile and is arranged on the assembly part, and the fastening slot is a through slot. The fastening assembly also includes a fastening block, and the fastening block has a fastening pin that is compatible with the fastening slot, and the rod of the fastening bolt passes through the fastening block.

[0008] Preferably, in order to facilitate installation of the fastening assembly at different positions according to different requirements, two fastening slots are provided, which are disposed on both sides of the assembly portion.

[0009] Preferably, in order to ensure that the outer side surfaces of the frame profiles of two adjacent photovoltaic modules can fit tightly during laying to reduce the laying area, the width direction of the outer side surface is consistent with the thickness direction of the photovoltaic laminate.

[0010] Preferably, in order to reduce the water vapor penetrating into the photovoltaic laminate and ensure the firmness of the installation of the photovoltaic laminate, the sealing strip includes a sealing side strip and a sealing bottom strip respectively connected to the side wall and bottom wall of the photovoltaic module laminate, and a guide groove is provided on the adjacent side of the sealing strip and the photovoltaic laminate, and the two ends of the guide groove are respectively arranged on the sealing side strip and the sealing bottom strip, and the sealing bottom strip is provided with a guide hole extending along its own thickness direction and connected with the guide groove, and the lower supporting part is provided with a negative pressure inlet connected with the guide hole, and the assembly part and the lower supporting part enclose a cavity of the frame profile, and the cavity extends along the length direction of the frame profile and is connected with the guide hole through the negative pressure inlet, and the cavity is used to connect a negative pressure device.

[0011] Preferably, in order to facilitate the discharge of water vapor that has penetrated between the sealing strip and the photovoltaic laminate, the sealing side strip and the sealing bottom strip are respectively provided with a diverter groove and a confluence groove on one side adjacent to the photovoltaic laminate, and the diverter groove and the confluence groove both extend in a length direction parallel to the frame profile, and the guide groove is distributed along the length direction of the frame profile and the two ends are respectively connected to the diverter groove and the confluence groove, and the notch of the diverter groove faces the side wall of the front glass layer.

[0012] Preferably, in order to facilitate the centralized discharge of water vapor and ensure the reliability of the connection between the photovoltaic laminate and the frame profile, a negative pressure outlet connected to the cavity is provided on the assembly portion, and a current collecting assembly is provided directly below the photovoltaic laminate. The cavity is connected to the negative pressure device through the current collecting assembly. The current collecting assembly includes a current collecting shell fixed between the frame profiles and open at the top. The top of the current collecting shell is connected to the back glass layer through an elastic support pad. The current collecting shell, the support pad and the back glass layer enclose a current collecting cavity. A current collecting outlet is provided on the current collecting shell, and the negative pressure outlet, the current collecting cavity and the current collecting outlet are connected in sequence.

[0013] Preferably, in order to facilitate the air pressure and temperature in the manifold, a barometer and a humidity sensor are provided in the manifold.

[0014] Preferably, in order to ensure the firmness of the connection between two adjacent photovoltaic components, a docking assembly is also provided on the frame profile, and the docking assembly is arranged on the side of the cavity facing away from the current collecting assembly. The docking assembly includes a docking tube fixedly connected to the assembly part and connected to the cavity. When the two lightweight photovoltaic power generation devices are laid on the same plane and the outer side surfaces of the two frame profiles are facing each other and fit together, the docking tubes between the two frame profiles are connected coaxially, and an on-off unit is provided in the docking tube, and the on-off unit is used to control the connection and disconnection of the pipe openings at both ends of the docking tube; the current collecting outlet is detachably connected to a sealing cover.

[0015] Preferably, in order to be able to control the connection and disconnection of the pipe openings at both ends of the butt joint, the on-off unit includes a screw, a sealing cylinder, a sleeve and a bracket, the sleeve is fixed in the butt joint through the bracket, the sealing cylinder is fixed in the butt joint and is coaxial with the screw, the screw is threadedly connected to the sleeve and a sealing plug is provided on one end coaxial with the sealing cylinder, the bracket, the sleeve and the circumferential inner wall of the butt joint form a connecting gap.

[0016] To sum up, compared with the prior art, the lightweight photovoltaic power generation device of the present invention has a side clamping part and a lower supporting part which are sealed to the side wall and bottom wall of the photovoltaic laminate through a sealing strip, thereby preventing the top edge of the photovoltaic laminate from being blocked, ensuring the photovoltaic power generation, and facilitating water and dust discharge. The lower supporting part and the assembly part of the frame profile are both located on the outer side adjacent to the photovoltaic laminate, which reduces the occupied area, facilitates the close arrangement of photovoltaic devices, increases the laying volume, and improves the overall photovoltaic power generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the first embodiment; Figure 2 yes Figure 1 Explosion diagram of Figure 3 yes Figure 1 A schematic cross-sectional structure diagram of ; Figure 4 yes Figure 3 A front view of Figure 5 is a schematic structural diagram of another use form of the first embodiment; Figure 6 is a schematic diagram of the connection structure between the frame profile and the sealing strip of the first embodiment; Figure 7 yes Figure 6 Explosion diagram of Figure 8 is a schematic diagram of the connection structure between the frame profile and the fastening assembly of the first embodiment; Fig. 9 is a schematic structural diagram of a second embodiment; Fig.10 yes Fig. 9 Explosion diagram of Fig.11 is a schematic structural diagram of the second embodiment from another perspective; Fig.12 yes Fig.11 A schematic cross-sectional structure diagram of ; Fig.13 yes Fig.12 A magnified view of part A; Fig.14 is a schematic diagram of the connection structure between the frame profile and the sealing strip of the second embodiment; Fig.15 yes Fig.14 Explosion diagram of Fig.16 yes Fig.15 A magnified view of part B; Fig.17 is a schematic structural diagram of a docking assembly according to a second embodiment; Fig.18 yes Fig.17 Explosion diagram of Fig.19 is a schematic diagram of the splicing structure of the second embodiment; Fig. 20 yes Fig.19 A schematic cross-sectional structure diagram of ; Fig.21 yes Fig. 20 Enlarged view of part C; In the figure: 1, photovoltaic laminate; 11, front glass layer; 12, front film layer; 13, battery layer; 14, back film layer; 15, back glass layer; 2, frame profile; 21, side clamping part; 211, outer side; 22, lower support part; 221, negative pressure inlet; 23, assembly part; 231, negative pressure outlet; 232, docking port; 24, fastening slot; 25, cavity; 3, sealing strip; 31, sealing side strip; 311, diverter groove; 32, sealing bottom strip; 321, diversion hole; 322, confluence groove; 33, diversion groove; 4, fastening assembly 1. Fastening bolts; 2. Fastening nuts; 3. Fastening blocks; 4. Fastening pins; 5. Current collector assembly; 6. Current collector shell; 7. Current collector outlet; 8. Support pad; 9. Barometer; 10. Humidity sensor; 11. Connecting pipe; 12. Sealing cover; 13. Butt joint assembly; 14. Butt joint pipe; 15. Sealing pad; 16. Limiting ring; 17. On / off unit; 18. Screw; 19. Sealing cylinder; 20. Screw sleeve; 21. Support rod; 22. Sealing plug; 23. Screw sleeve; 24. Support rod; 25. Sealing plug; 26. Sealing sleeve; 27. Screw cap; 28. Angle code. DETAILED DESCRIPTION

[0018] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0019] First embodiment

[0020] like Figure 1-Figure 10 As shown, the lightweight photovoltaic power generation device of the first embodiment of the present invention comprises: A photovoltaic laminate 1, the photovoltaic laminate 1 comprises a front glass layer 11, a front adhesive film layer 12, a battery layer 13, a back adhesive film layer 14 and a back glass layer 15 which are sequentially laminated and connected; A frame assembly, the frame assembly includes a frame profile 2 connected in sequence from end to end, and a sealing strip 3 flush with the end of the frame profile 2 and elastic, the frame profile 2 includes a side clamping portion 21, a lower supporting portion 22 and an assembly portion 23 connected in sequence from top to bottom, the side clamping portion 21 and the lower supporting portion 22 are respectively sealed to the side wall and the bottom wall of the photovoltaic laminate 1 through the sealing strip 3, the side clamping portion 21 is located below the plane where the top surface of the front glass layer 11 is located, the side of the side clamping portion 21 facing away from the photovoltaic assembly is the outer side 211, and the lower supporting portion 22 and the assembly portion 23 are both located on the side of the outer side 211 adjacent to the photovoltaic laminate 1; The fastening assembly 4 is used to lock the assembly portion 23 on the photovoltaic support. The fastening assembly 4 includes a fastening bolt 41 and a fastening nut 42 that are threadedly connected.

[0021] In the present invention, the photovoltaic laminate 1 is a rectangular plate-like structure as a whole. Therefore, correspondingly, four frame profiles 2 are provided and connected end to end in sequence to form a rectangular frame. The inner wall of the rectangular frame is sealed and connected to the circumferential outer edge of the photovoltaic laminate 1 and the edge of the bottom surface of the back glass layer 15 through four sealing strips 3.

[0022] The specific structure of the frame profile 2 is as follows Figure 4 , Figure 7 and Figure 8 As shown, the frame profile 2 includes a side clamping portion 21, a lower supporting portion 22 and an assembly portion 23. When the frame profile 2 is laid flat, the width direction of the side clamping portion 21 is the vertical direction, the width direction of the lower supporting portion 22 is the horizontal direction, and the cross section of the assembly portion 23 is U-shaped and fixed below the lower supporting portion 22, so that the assembly portion 23 and the lower supporting portion 22 enclose a cavity 25 of the frame profile 2, which facilitates the insertion of the end of the corner code 7 into the cavity 25, and connects two adjacent frame profiles 2 through the corner code 7. The sealing strip 3 includes a sealing side strip 31 and a sealing bottom strip 32 respectively connected to the side wall and bottom wall of the photovoltaic module laminate, so that the cross section of the sealing strip 3 is L-shaped.

[0023] The side clamping portion 21 of the frame profile 2 is sealed and connected to the side wall of the photovoltaic laminate 1 through the sealing side strip 31 of the sealing strip 3, clamping the photovoltaic laminate 1 from the side, and the lower supporting portion 22 is sealed and connected to the bottom wall edge of the photovoltaic laminate 1 through the sealing bottom strip 32 of the sealing strip 3, supporting and sealing the photovoltaic laminate 1; after the frame profile 2, the sealing strip 3 and the photovoltaic laminate 1 are assembled, the side clamping portion 21 and the sealing strip 3 are both located below the plane where the top surface of the front glass layer 11 is located, thus ensuring that there is no obstruction on the top surface of the front glass layer 11. On the one hand, it is beneficial to the amount of sunlight that can be received by the top surface of the photovoltaic laminate 1, thereby improving the photovoltaic power generation efficiency. On the other hand, it avoids dust and water accumulation on the top of the photovoltaic laminate 1. The top surface of the entire photovoltaic device is flat and located on the same horizontal plane, which is convenient for drainage and dust removal, and ensures the high photoelectric conversion efficiency of the photovoltaic laminate 1 during long-term use.

[0024] It should be noted that the sealing strip 3 is preferably made of an elastic material, such as silicone or rubber.

[0025] The side of the side clamping portion 21 facing away from the photovoltaic component is the outer side 211, and the lower supporting portion 22 and the assembly portion 23 are both located on the side of the outer side 211 adjacent to the photovoltaic laminate 1. In this way, the area occupied by the photovoltaic device during laying is reduced, making it easier to install more photovoltaic devices on the photovoltaic bracket, thereby increasing power generation.

[0026] A further improvement is that the assembly portion 23 is also provided with a fastening slot 24 which is in the same length direction as the frame profile 2 and is arranged on the assembly portion 23. The fastening slot 24 is a through slot. The fastening assembly 4 also includes a fastening block 43. The fastening block 43 has a fastening pin 431 which is adapted to the fastening slot 24. The rod of the fastening bolt 41 passes through the fastening block 43. Two fastening slots 24 are provided, which are arranged on both sides of the assembly portion 23.

[0027] Specifically, the fastening slots 24 are arranged on both sides of the bottom of the frame profile 2 and share a bottom surface with the assembly portion 23. The fastening slots 24 are located on the side of the outer side 211 adjacent to the photovoltaic laminate 1 to reduce the area occupied by laying the photovoltaic device; the notch of the fastening slots 24 is set upward.

[0028] In the fastening assembly 4, fastening pins 431 compatible with the fastening slots 24 are arranged on both sides below the fastening block 43. During assembly, the fastening pins 431 of the fastening block 43 can be placed in any fastening slot 24 as needed. After the rod of the fastening bolt 41 is passed through the fastening block 43 and the photovoltaic bracket, the tail of the rod of the fastening bolt 41 is screwed into the fastening nut 42 below the photovoltaic bracket, and the photovoltaic device can be fixedly installed on the photovoltaic bracket. When only one photovoltaic device needs to be installed, the fastening pin 431 of the fastening block 43 can be inserted into the fastening slot 24 close to the inner side, and the fixing operation of the photovoltaic component can be completed by the threaded fastening bolt 41 and the fastening nut 42. When two adjacent photovoltaic devices need to be installed, the two fastening pins 431 of the fastening block 43 can be respectively inserted into the two fastening slots 24 located on the outer side of the frame profile 2 of the two photovoltaic devices close together. The frame profiles 2 on the adjacent sides of the two photovoltaic devices can be locked on the photovoltaic bracket at one time through the fastening bolts 41 and the fastening nuts 42, thereby reducing the number of workers for installation, improving the laying efficiency, and reducing the laying cost.

[0029] A further improvement is that the width direction of the outer side surface 211 is consistent with the thickness direction of the photovoltaic laminate 1. With this structure, when two photovoltaic devices are laid, the outer side surfaces 211 of the two frame profiles 2 facing and adjacent to the two photovoltaic devices can be closely fitted together, thereby increasing the density of laying, reducing the area occupied by laying photovoltaic devices, and increasing power generation.

[0030] Second embodiment

[0031] like Figure 10-Figure 21As shown, the lightweight photovoltaic power generation device of the second embodiment of the present invention is based on the first embodiment, and the difference lies in that a guide groove 33 is provided on the adjacent side of the sealing strip 3 and the photovoltaic laminate 1, and the two ends of the guide groove 33 are respectively arranged on the sealing side strip 31 and the sealing bottom strip 32, and the sealing bottom strip 32 is provided with a guide flow hole 321 extending along its own thickness direction and connected with the guide groove 33, and the lower supporting portion 22 is provided with a negative pressure inlet 221 connected with the guide flow hole 321, and the assembly portion 23 and the lower supporting portion 22 are enclosed to form a cavity 25 of the frame profile 2, and the cavity 25 extends along the length direction of the frame profile 2 and is connected with the guide flow hole 321 through the negative pressure inlet 221, and the cavity 25 is used to connect the negative pressure device.

[0032] The sealing strip 3 of this embodiment is provided with a guide groove 33 on one side adjacent to the photovoltaic laminate 1. A part of the guide groove 33 is provided on the sealing side strip 31, and the other part is provided on the sealing bottom strip 32 and is connected with the negative pressure inlet 221 on the lower supporting part 22 of the frame profile 2 through the guide hole 321 on the sealing bottom strip 32. The negative pressure inlet 221 is a through hole connected with the cavity 25. The cavity 25 is used to connect the negative pressure device, and the negative pressure device is preferably a negative pressure pump.

[0033] After adopting the above structure, with the long-term use of the photovoltaic device, water vapor will inevitably penetrate into the top of the sealing strip 3 and the adjacent part of the photovoltaic laminate 1. The guide groove 33 is used to conveniently contain and guide the water vapor. After the negative pressure device is started, the water vapor passes through the guide groove 33 and then enters the guide hole 321. After passing through the guide hole 321, it passes through the negative pressure inlet 221 and the cavity 25 in turn, and then is discharged to the outside. In addition, after the negative pressure device is started, it can also form negative pressure at the guide groove 33 and the guide hole 321, firmly adsorb the photovoltaic laminate 1, and prevent the photovoltaic laminate 1 from separating from the frame profile 2.

[0034] A further improvement is that the sealing side strip 31 and the sealing bottom strip 32 are respectively provided with a diverter groove 311 and a converging groove 322 on the side adjacent to the photovoltaic laminate 1, and the diverter groove 311 and the converging groove 322 both extend in a length direction parallel to the frame profile 2, and the guide groove 33 is distributed along the length direction of the frame profile 2 and the two ends are respectively connected to the diverter groove 311 and the converging groove 322, and the notch of the diverter groove 311 faces the side wall of the front glass layer 11.

[0035] Specifically, Figure 14-16As shown, since the front glass layer 11 has good waterproof performance, water molecules will not penetrate downward from the top surface of the front glass layer 11 into the battery layer 13. The notch of the diverter groove 311 is facing the side wall of the front glass layer 11, so that the water molecules first enter the diverter groove 311. When flowing in the diverter groove 311, multiple streams of fluid are formed. After passing through multiple guide grooves 33, they converge in the confluence groove 322 of the sealing bottom strip 32, enter the cavity 25 through the guide hole 321 and the negative pressure inlet 221, and are then discharged by the negative pressure device.

[0036] In this embodiment, the two ends of the diversion groove 311 are adjacent to the two ends of the sealing side strip 31, and the two ends of the confluence groove 322 are adjacent to the two ends of the sealing bottom strip 32. The guide grooves 33 and the guide holes 321 are evenly spaced along the length direction of the sealing strip 3. Adjacent guide grooves 33 are adjacently arranged, and adjacent guide holes 321 are adjacently arranged to ensure the dehumidification range. The water vapor in the gap between the sealing strip 3 and the photovoltaic laminate 1 can be extracted, and the water vapor penetrating into the battery layer 13 can be greatly reduced, thereby extending the service life of the photovoltaic laminate 1 and increasing the photovoltaic power generation.

[0037] A further improvement is that a negative pressure outlet 231 connected to the cavity 25 is provided on the assembly portion 23, a current collecting assembly 5 is provided directly below the photovoltaic laminate 1, the cavity 25 is connected to the negative pressure device through the current collecting assembly 5, the current collecting assembly 5 includes a current collecting shell 51 fixed between the frame profiles 2 and open at the top, the top of the current collecting shell 51 is connected to the back glass layer 15 through an elastic support pad 52, the current collecting shell 51, the support pad 52 and the back glass layer 15 enclose a current collecting cavity, a current collecting outlet 511 is provided on the current collecting shell 51, the negative pressure outlet 231, the current collecting cavity and the current collecting outlet 511 are connected in sequence.

[0038] Specifically, Figure 10-12 As shown, the current collecting assembly 5 is arranged below the back glass layer 15, and is mainly used to collect the water vapor and excess air between the sealing strip 3 and the photovoltaic laminate 1 in the circumferential direction, and then discharge them through the negative pressure device.

[0039] The negative pressure outlet 231 is arranged on the inner side of the assembly part 23. In the current collecting assembly 5, the top of the current collecting shell 51 is open, and the current collecting outlet 511 is arranged at the bottom center of the current collecting shell 51. The four sides of the current collecting shell 51 are fixedly connected to the assembly parts 23 of the four frame profiles 2 through four connecting tubes 55, respectively, and the inner cavity of the current collecting shell 51 is connected with the negative pressure outlet 231 through the inner cavity of the connecting tube 55; an outer flange is arranged on the top of the current collecting shell 51, and an elastic support pad 52 is arranged above the outer flange. The support pad 52 is preferably a rubber pad or a silicone pad, so that the current collecting shell 51, the support pad 52 and the back glass layer 15 are enclosed to form a current collecting cavity.

[0040] When the negative pressure device is evacuating air, the water vapor in the guide groove 33, the diversion groove 311 and the confluence groove 322 can be conveniently discharged through the collecting cavity, the connecting pipe 55, the negative pressure outlet 231 and the cavity 25, so that the sealing strip 3 and the photovoltaic laminate 1 remain dry. At the same time, the photovoltaic laminate 1 can be tightly adsorbed between the sealing strips 3, and the back glass layer 15 is firmly adsorbed on the support pad 52, ensuring the firm connection between the photovoltaic laminate 1 and the frame profile 2, and preventing water vapor from penetrating into the battery layer 13, thereby ensuring stable and reliable photovoltaic power generation of the photovoltaic device and extending the service life.

[0041] Preferably, a barometer 53 and a humidity sensor 54 are provided in the manifold.

[0042] The barometer 53 and the humidity sensor 54 are used to conveniently detect the air pressure and humidity in the collecting cavity. When the internal air pressure is higher than the preset air pressure or the humidity is higher than the preset humidity (the preset air pressure and the preset humidity can be flexibly adjusted according to the different needs of users), it indicates that the force between the support pad 52 and the back glass layer 15 is reduced, or a large amount of water vapor is mixed in the gap between the sealing strip 3 and the photovoltaic laminate 1. At this time, the negative pressure device is started to discharge excess air and water vapor to reduce the air pressure in the collecting cavity and the amount of water vapor between the sealing strip 3 and the photovoltaic laminate 1, thereby ensuring the firm connection between the photovoltaic laminate 1 and the frame profile 2 and the efficient and stable photovoltaic power generation of the photovoltaic laminate 1.

[0043] A further improvement is that a docking assembly 6 is also provided on the frame profile 2, and the docking assembly 6 is arranged on the side of the cavity 25 facing away from the collecting assembly 5. The docking assembly 6 includes a docking tube 61 fixedly connected to the assembly portion 23 and connected to the cavity 25. When two lightweight photovoltaic power generation devices are laid on the same plane and the outer side surfaces 211 of two frame profiles 2 are facing each other and fit together, the docking tube 61 between the two frame profiles 2 is connected coaxially, and a switching unit 62 is provided in the docking tube 61. The switching unit 62 is used to control the connection and disconnection of the pipe openings at both ends of the docking tube 61; the collecting outlet 511 is detachably connected to a sealing cover 56.

[0044] like Fig.19 and Fig. 20As shown, after adopting the above structure, when two photovoltaic devices of this embodiment are spliced, the outer side surfaces 211 of the two frame profiles 2 are facing and fitted together. Before splicing, the docking assembly 6 corresponding to the two outer side surfaces 211 is adjusted, and the two pipe openings of the docking pipe 61 in the docking assembly 6 are kept in a connected state through the on-off unit 62, while the two pipe openings of the docking pipe 61 in the other docking assemblies 6 are kept in a disconnected state through the on-off unit 62. Then, after the two photovoltaic devices are spliced ​​and laid, the two docking pipes 61 whose end pipe openings are connected are coaxial and They are interconnected so that the collecting cavities and the guide grooves 33, the diverter grooves 311, and the confluence grooves 322 in the two photovoltaic devices remain connected. In this state, it is only necessary to connect the negative pressure device to the collecting outlet 511 of the collecting assembly 5 of one of the photovoltaic devices, and the other collecting outlet 511 is sealed by the sealing cover 56, so that the negative pressure device can simultaneously control the reduction of water vapor and air pressure at the reduced point of the photovoltaic laminate 1 and the sealing strip 3 of the two photovoltaic devices, so that the two are consistent, and the two photovoltaic devices are connected into one, thereby increasing the stability of the overall lightweight photovoltaic power generation device structure.

[0045] A further improvement is that the on-off unit 62 includes a screw 621, a sealing cylinder 622, a threaded sleeve 623 and a support rod 624. The threaded sleeve 623 is fixed to the butt joint 61 through the support rod 624. The sealing cylinder 622 is fixed to the butt joint 61 and is coaxial with the screw 621. The screw 621 is threadedly connected to the threaded sleeve 623 and a sealing plug 625 is provided on the coaxial line of one end adjacent to the sealing cylinder 622. The support rod 624, the threaded sleeve 623 and the circumferential inner wall of the butt joint 61 form a connecting gap.

[0046] Specifically, Fig.14 , Fig.15 , Fig.17 , Fig.18 As shown, the assembly portion 23 of the frame profile 2 is also provided with a docking port 232 which is coaxial with the negative pressure outlet 231 and connected to the cavity 25. The docking tube 61 is a circular tube, one end of which is provided with an end flange, and a convex ring is fixed to the middle circumferential outer edge. The circumferential outer edge of the docking tube 61 is fixedly connected to the circumferential inner wall of the docking port 232, and the side of the convex ring facing away from the end flange is fixedly connected to the side of the assembly portion 23 facing away from the photovoltaic laminate 1. The fixed connection method is preferably welding. After the fixed connection is completed, the end of the docking tube 61 away from the end flange is arranged in the cavity 25 and is spaced from the negative pressure outlet 231.

[0047] like Fig.13 , Fig.17 , Fig.18 and Fig.21As shown, in the on-off unit 62, the sealing cylinder 622 is fixed to the end of the butt joint 61 away from the end flange, the circumferential inner wall of the sealing cylinder 622 is a conical cone, and the inner diameter of the end of the sealing cylinder 622 adjacent to the end flange is larger than the inner diameter of the other end, the support rod 624 is evenly distributed on the outer periphery of the screw sleeve 623 in the circumferential direction, one end is fixedly connected to the screw sleeve 623, and the other end is fixedly connected to the inner wall of the butt joint 61, the screw sleeve 623 is threadedly connected with the screw rod 621, and the end of the screw rod 621 adjacent to the end flange is provided with a screw cap 627, and the screw cap 627 is provided with a strip groove, and the other end of the screw rod 621 is fixed A sealing plug 625 is provided which is coaxial with the sealing cylinder 622 and the butt joint tube 61. An elastic sealing sleeve 626 is provided outside the sealing plug 625. The sealing sleeve 626 is a rubber sleeve or a silicone sleeve. The circumferential inner wall, the circumferential outer wall and the circumferential outer wall of the sealing sleeve 626 and the circumferential outer wall of the sealing plug 625 all have the same taper as the circumferential inner wall of the sealing cylinder 622. A limiting ring 612 is fixed at one end of the butt joint tube 61 which is conveniently adjacent to the end. The inner diameter of the limiting ring 612 is smaller than the outer diameter of the screw cap 627. The outer diameters of the screw cap 627, the sealing plug 625 and the sealing sleeve 626 are all smaller than the inner diameter of the butt joint tube 61.

[0048] After adopting the above structure, the end of the screwdriver can be inserted into the strip groove of the rotary cover 627 to drive the rotary cover 627 to rotate, so that the sealing sleeve 626 is close to or away from the sealing tube 622. When the sealing sleeve 626 is clamped between the sealing plug 625 and the sealing tube 622, the pipe openings at both ends of the butt joint 61 are isolated from each other, and after a certain interval exists between the sealing sleeve 626 and the circumferential inner wall of the sealing tube 622, the two pipe openings of the butt joint 61 are connected to each other.

[0049] The end flange is also provided with an elastic and annular sealing gasket 611, which fits the circumferential outer edge and both end surfaces of the end flange to ensure the firm connection between the sealing gasket 611 and the butt joint 61. The sealing gasket 611 is preferably a rubber pad or a silicone pad. After adopting the above structure, when two photovoltaic devices are spliced, the ends of the two adjacent butt joints 61 with the coaxial centerline are contacted by two elastic sealing gaskets 611. Compared with rigid contact, elastic contact is achieved by squeezing the sealing gasket 611, which strengthens the sealing and prevents the butt joint from being connected to the outside world.

[0050] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A lightweight photovoltaic power generation device, characterized in that: include: A photovoltaic laminate (1), the photovoltaic laminate (1) comprising a front glass layer (11), a front adhesive film layer (12), a battery layer (13), a back adhesive film layer (14) and a back glass layer (15) which are sequentially laminated and connected; A frame assembly, the frame assembly comprising a frame profile (2) connected end to end, and a sealing strip (3) flush with the end of the frame profile (2) and elastic, the frame profile (2) comprising a side clamping portion (21), a lower supporting portion (22) and an assembly portion (23) connected from top to bottom, the side clamping portion (21) and the lower supporting portion (22) being respectively sealed to the side wall and bottom wall of the photovoltaic laminate (1) through the sealing strip (3), the side clamping portion (21) being located below the plane where the top surface of the front glass layer (11) is located, the side of the side clamping portion (21) facing away from the photovoltaic assembly is an outer side surface (211), and the lower supporting portion (22) and the assembly portion (23) are both located on the side of the outer side surface (211) adjacent to the photovoltaic laminate (1); A fastening assembly (4), the fastening assembly (4) being used to lock the assembly portion (23) onto the photovoltaic support, the fastening assembly (4) comprising a threaded fastening bolt (41) and a fastening nut (42).

2. The lightweight photovoltaic power generation device according to claim 1, characterized in that: The assembly portion (23) is also provided with a fastening slot (24) having the same length direction as the frame profile (2) and arranged on the assembly portion (23); the fastening slot (24) is a through slot; the fastening assembly (4) further comprises a fastening block (43); the fastening block (43) has a fastening pin (431) adapted to the fastening slot (24); and the rod of the fastening bolt (41) passes through the fastening block (43).

3. The lightweight photovoltaic power generation device according to claim 2, characterized in that: Two fastening slots (24) are provided, which are respectively arranged on two sides of the assembly portion (23).

4. The lightweight photovoltaic power generation device according to claim 1, characterized in that: The width direction of the outer side surface (211) is consistent with the thickness direction of the photovoltaic laminate (1).

5. The lightweight photovoltaic power generation device according to claim 1, characterized in that: The sealing strip (3) comprises a sealing side strip (31) and a sealing bottom strip (32) respectively connected to the side wall and bottom wall of the photovoltaic module laminate. A guide groove (33) is provided on one side of the sealing strip (3) adjacent to the photovoltaic laminate (1). Two ends of the guide groove (33) are respectively provided on the sealing side strip (31) and the sealing bottom strip (32). The sealing bottom strip (32) is provided with a sealing strip extending in the thickness direction thereof and connected to the guide groove (33). The lower supporting portion (22) is provided with a negative pressure inlet (221) which is in communication with the flow-guiding hole (32); the assembly portion (23) and the lower supporting portion (22) are enclosed to form a cavity (25) of the frame profile (2); the cavity (25) extends along the length direction of the frame profile (2) and is in communication with the flow-guiding hole (32) through the negative pressure inlet (221); and the cavity (25) is used to connect a negative pressure device.

6. The lightweight photovoltaic power generation device according to claim 5, characterized in that: A diverter groove (311) and a converging groove (322) are respectively provided on the side of the sealing side strip (31) and the sealing bottom strip (32) adjacent to the photovoltaic laminate (1); the diverter groove (311) and the converging groove (322) both extend in a length direction parallel to the frame profile (2); the guide groove (33) is distributed along the length direction of the frame profile (2) and its two ends are respectively connected to the diverter groove (311) and the converging groove (322); the notch of the diverter groove (311) faces the side wall of the front glass layer (11).

7. The lightweight photovoltaic power generation device according to claim 6, characterized in that: The assembly portion (23) is provided with a negative pressure outlet (231) connected to the cavity (25); a current collecting assembly (5) is provided directly below the photovoltaic laminate (1); the cavity (25) is connected to the negative pressure device via the current collecting assembly (5); the current collecting assembly (5) comprises a current collecting shell (51) fixed between the frame profiles (2) and having an open top; the top of the current collecting shell (51) is connected to the back glass layer (15) via an elastic support pad (52); the current collecting shell (51), the support pad (52) and the back glass layer (15) enclose a current collecting cavity; a current collecting outlet (511) is provided on the current collecting shell (51); the negative pressure outlet (231), the current collecting cavity and the current collecting outlet (511) are connected in sequence.

8. The lightweight photovoltaic power generation device according to claim 7, characterized in that: A barometer (53) and a humidity sensor (54) are arranged in the manifold.

9. The lightweight photovoltaic power generation device according to claim 7, characterized in that: The frame profile (2) is also provided with a docking assembly (6), the docking assembly (6) being arranged on a side of the cavity (25) facing away from the current collecting assembly (5), the docking assembly (6) comprising a docking pipe (61) fixedly connected to the assembly portion (23) and communicating with the cavity (25), and when two lightweight photovoltaic power generation devices are laid on the same plane and the outer side surfaces (211) of the two frame profiles (2) are facing each other and affixed, the docking pipes (61) between the two frame profiles (2) are connected coaxially, and a switching unit (62) is arranged inside the docking pipe (61), the switching unit (62) being used to control the connection and disconnection of the pipe openings at both ends of the docking pipe (61); the current collecting outlet (511) is detachably connected to a sealing cover (56).

10. The lightweight photovoltaic power generation device according to claim 9, characterized in that: The on-off unit (62) comprises a screw (621), a sealing cylinder (622), a threaded sleeve (623) and a bracket (624); the threaded sleeve (623) is fixed in the butt joint tube (61) via the bracket (624); the sealing cylinder (622) is fixed in the butt joint tube (61) and is coaxial with the screw (621); the screw (621) is threadedly connected to the threaded sleeve (623) and a sealing plug (625) is provided at one end adjacent to the sealing cylinder (622) and coaxially; the bracket (624), the threaded sleeve (623) and the circumferential inner wall of the butt joint tube (61) enclose a communicating gap.

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