CN216356637U

CN216356637U - Solar photovoltaic module and photovoltaic system

Info

Publication number: CN216356637U
Application number: CN202122844528.5U
Authority: CN
Inventors: 陈章洋; 杨亚骏; 孟祥熙; 曹育红
Original assignee: Changzhou Shichuang Energy Co Ltd
Current assignee: Changzhou Shichuang Energy Co Ltd
Priority date: 2021-11-19
Filing date: 2021-11-19
Publication date: 2022-04-19
Anticipated expiration: 2031-11-19

Abstract

The utility model discloses a solar photovoltaic module and a photovoltaic system, wherein the solar photovoltaic module comprises a laminating part, a junction box, a long side frame and a short side frame, wherein the long side frame and the short side frame surround the outer periphery of the laminating part, lead-out wires of the laminating part and the junction box are arranged on one side of the laminating part close to the long side frame, the lead-out wires of the laminating part are connected into the junction box, and the junction box is positioned on the back surface of the laminating part. The photovoltaic system is arranged on the ceiling type power station, and the positions of the junction box and the cable on the back of the assembly are tidy when viewed from bottom to top, so that the external attractiveness of the ceiling type power station is greatly improved, the drainage performance of the surface of the assembly is good, water and dust are not easily accumulated at the bottom of the assembly, the stability of the photovoltaic system is improved, and the service life of the photovoltaic system is prolonged.

Description

Solar photovoltaic module and photovoltaic system

Technical Field

The utility model relates to the technical field of photovoltaics, in particular to a solar photovoltaic module and a photovoltaic system.

Background

The existing solar photovoltaic modules can be divided into two types, namely a whole-piece module and a half-piece module, according to the size of a cell. In view of the layout of the cells within the module, the junction boxes of the entire module are typically located at the short edge of the back of the module, and the junction boxes of the half modules are typically located at the middle of the back of the module. The footprint of half-wafer assemblies is increasing and becoming a standard for power stations due to their higher efficiency.

When the solar photovoltaic component is used for a large ground power station or a roof distributed power station, the distance between the component and the ground or the roof is not high, the power stations basically have no requirement on the appearance of the back of the component, and only the normal use is not influenced. However, when the solar photovoltaic module is used in a ceiling-mounted power station such as a road photovoltaic system, the junction box and the connecting cable on the back of the module are exposed outside the module, which seriously affects the aesthetic property of the ceiling-mounted power station. In addition, the subassembly frame can exceed the positive glass of subassembly 3~5mm, leads to the subassembly when outdoor slope installation uses, and the rainwater can be along subassembly surface washing and down, forms ponding in subassembly lower limb frame department at last, and the dust gathering that remains in the aquatic behind the ponding evaporation is on the subassembly surface, especially when the subassembly is installed with little angle of inclination, and the dust of long-term accumulation is more and more thick, influences the normal electricity generation of subassembly.

Disclosure of Invention

The utility model aims to provide a solar photovoltaic module and a photovoltaic system which are simple in structure, attractive in appearance and capable of preventing dust deposition.

In order to achieve the purpose, the utility model adopts the following technical scheme:

in one aspect, the solar photovoltaic module comprises a laminated part, a junction box and a long side frame and a short side frame which are surrounded on the outer periphery of the laminated part, wherein lead-out wires of the laminated part and the junction box are arranged on one side of the laminated part close to the long side frame, the lead-out wires of the laminated part are connected into the junction box, and the junction box is located on the back side of the laminated part.

Preferably, the number of the junction boxes is 2-5.

Preferably, the laminated member comprises a solar cell matrix formed by a plurality of solar cell sheets, the solar cell sheets form a plurality of solar cell strings which are connected in series with each other through bus bars, and each solar cell string comprises a plurality of solar cell sheets which are connected in series.

Preferably, the solar cell is a rectangular solar cell.

Preferably, the solar cells are longitudinally arranged to form the solar cell string, and the solar cell string is transversely arranged along the long-side frame to form the solar cell matrix.

Preferably, the long edge frame comprises a supporting part and an arc-shaped bending part arranged at one end of the top of the supporting part, and water guide grooves are formed in the middle positions of the arc-shaped bending part and the positions, close to the short edge frame, of the two ends of the arc-shaped bending part.

Preferably, the water chutes on the long side frame are in one-to-one correspondence from top to bottom.

On the other hand, the utility model also provides a photovoltaic system which comprises the solar photovoltaic module.

According to the solar photovoltaic module, the positions of the outgoing line of the laminating part and the position of the junction box are adjusted to the edge position of the long-edge frame of the module and are positioned on the same side, the outgoing line of the laminating part is directly led out from the bus bar on the side surface and is connected to the junction box, and the junction box is very close to the position of the long-edge frame of the module, so that a connecting cable between the junction box and the outgoing line is shortened, the outgoing line does not extend towards the inside of the module and is wound to the back surface of the module to be led out, and the external attractiveness of the module is improved.

According to the solar photovoltaic module, the water guide grooves are correspondingly formed in the upper long side frame and the lower long side frame of the module, when the module is obliquely installed, water and dust are not accumulated easily, the water accumulation discharge capacity of the module is improved, the positions of the water guide grooves correspond to each other, and water is discharged more smoothly.

The photovoltaic system is arranged on the ceiling type power station, and the positions of the junction box and the cable on the back of the assembly are relatively regular when viewed from bottom to top, so that the external attractiveness of the ceiling type power station is greatly improved.

Drawings

FIG. 1 is a schematic structural view of a solar photovoltaic module of the present invention;

FIG. 2 is a schematic diagram of the frame structure of the solar photovoltaic module of the present invention;

fig. 3 is a schematic diagram of a long-side frame structure of the solar photovoltaic module of the present invention.

Detailed Description

The technical solution of the present invention is further described below with reference to the accompanying drawings and examples.

Referring to fig. 1, a solar photovoltaic module according to a preferred embodiment of the present invention includes a laminate 10, a junction box 20, and a long side frame 30 and a short side frame 40 surrounding the outer circumference of the laminate 10. The laminating piece 10 comprises glass, an upper EVA layer, solar cell sheets, a lower EVA layer and a back plate from top to bottom, a plurality of solar cell sheets 50 in the laminating piece 10 are mutually connected in series to form a plurality of strip-shaped solar cell strings 60, the solar cell strings 60 are mutually connected in series through bus bars 70, the bus bars 70 are arranged on one side of a long side frame 30 close to the bottom end of the assembly, and finally outgoing lines of the laminating piece are led out from the bus bars 70. The junction box 20 is mounted on the back of the long side frame 30 of the laminate 10 near the bottom end of the assembly, and the lead wires of the laminate 10 can be optionally passed through the laminate 10 and connected to the junction box 20, or optionally be wound from the side of the laminate 10 to the back of the laminate 10 and connected to the junction box 20. Junction box 20 can then select suitable quantity according to solar PV modules's power size, and the quantity of junction box 20 is 3 in this embodiment, all sets up at lamination part 10 and is close to the back of the long limit frame 30 in subassembly bottom.

Fig. 1 schematically illustrates a layout manner of solar cells in a module, wherein the solar cells 50 are rectangular solar cells, the solar cells are longitudinally arranged to form a solar cell string 60, and the solar cell string 60 is transversely arranged along a long-side frame 30 to form a solar cell matrix. So design, the purpose makes the busbar all be close to the long limit frame of subassembly, makes things convenient for the lead-out wire to draw forth from the side of lamination piece.

The solar photovoltaic module of this embodiment, the border position of the long limit frame of subassembly and lieing in same one side is all adjusted to the position of the lead-out wire of lamination piece and terminal box, and the lead-out wire of lamination piece is direct to be drawn forth from the busbar of side and is connected to the terminal box, because the terminal box is very close to the position of the long limit frame of subassembly, has consequently shortened the connection cable between terminal box and the lead-out wire, and it is not prior art with lead-out wire inside extension of subassembly and cross and wind to the subassembly back and draw forth, has improved the outside aesthetic property of subassembly greatly.

As shown in fig. 2, the outer periphery of the laminate surrounds a border assembled from long side borders 30, short side borders 40, and corner joints, the border typically being made of aluminum alloy to facilitate protection of the laminate 10. As shown in fig. 3, the long side frame 30 includes a supporting portion 301 and an arc bending portion 302 arranged at one end of the top of the supporting portion 301, the arc bending portion 302 is located at the edge of the laminated part 10 and is higher than the surface of the laminated part 10, when the assembly is installed for a long time, the arc bending portion 302 can lead to water and dust accumulation at the bottom of the assembly, in order to solve the problem of water and dust accumulation on the surface of the assembly, the water guide grooves 303 are arranged at the middle position and two ends of the long side frame 30 of the assembly close to the short side frame 40, the water drainage capacity of the assembly is improved, and the water guide grooves 303 of the two long side frames 30 are in up-down one-to-one correspondence, so that the drainage on the surface of the assembly is smoother, dust is not easy to accumulate at the bottom of the assembly, and the purpose of cleaning the surface of the assembly is achieved.

The utility model also provides a photovoltaic system, which is a road photovoltaic system and comprises the solar photovoltaic module, wherein the solar photovoltaic module is specifically arranged on the ceiling type power station, and the positions of the junction box and the cable on the back of the module are more orderly when viewed from bottom to top, so that the use of the cable is reduced, the external attractiveness of the ceiling type power station is greatly improved, and the cost of the photovoltaic system is reduced to a certain extent; and the drainage performance on the surface of the solar photovoltaic module is good, and when the module is installed at an inclined angle, the drainage performance on the surface of the module is good, so that water and dust are not accumulated on the bottom of the module easily, and the stability and the service life of a photovoltaic system are improved.

Claims

1. The utility model provides a solar photovoltaic module which characterized in that: the terminal box comprises a laminated part, a terminal box and a long side frame and a short side frame which are surrounded on the outer periphery of the laminated part, wherein lead-out wires of the laminated part and the terminal box are arranged on one side of the laminated part close to the long side frame, the lead-out wires of the laminated part are connected into the terminal box, and the terminal box is positioned on the back side of the laminated part.

2. The solar photovoltaic module of claim 1, wherein: the number of the junction boxes is 2-5.

3. The solar photovoltaic module of claim 1, wherein: the laminate comprises a solar cell matrix formed by a plurality of solar cells, the solar cells forming a plurality of solar cell strings connected in series with each other by busbars, each solar cell string comprising a plurality of solar cells connected in series.

4. The solar photovoltaic module of claim 3, wherein: the solar cell is a rectangular solar cell.

5. The solar photovoltaic module of claim 4, wherein: the solar cell pieces are longitudinally arranged to form the solar cell string, and the solar cell string is transversely arranged along the long side frame to form the solar cell matrix.

6. The solar photovoltaic module of claim 1, wherein: the long edge frame comprises a supporting part and an arc-shaped bending part arranged at one end of the top of the supporting part, and water guide grooves are formed in the middle positions of the arc-shaped bending part and the positions, close to the short edge frame, of the two ends of the arc-shaped bending part.

7. The solar photovoltaic module of claim 6, wherein: the water chutes on the long edge frame are in one-to-one correspondence from top to bottom.

8. A photovoltaic system, characterized by: comprising the solar photovoltaic module of any one of claims 1 to 7.