CN211828791U - Photovoltaic system - Google Patents

Abstract

The utility model relates to a photovoltaic system, which comprises a bracket and a photovoltaic component, wherein the photovoltaic component comprises a junction box, a first panel, a first packaging layer, a battery layer, a second packaging layer and a second panel which are sequentially stacked, the first panel and the second panel are both high-light-transmission photovoltaic toughened/semi-toughened glass plates, the bracket is provided with a first end part and a cylindrical second end part, the first end part is covered and fixedly connected with the edge of the photovoltaic component, the first panel and the second panel are arranged into the high-light-transmission photovoltaic toughened glass plates or the high-light-transmission semi-toughened glass plates and are matched with the first packaging layer and the second packaging layer to improve the waterproof sealing performance, the photovoltaic component is fixed on the bracket with the cylindrical second end part and is sleeved on an external fixing piece through the second end part, the structure is simple, the installation is convenient, and the photovoltaic component can rotate around the external fixing piece, therefore, in the weather of strong wind and sea waves, the photovoltaic module can swing along with the wind and sea waves, and the service life is prolonged.

Description

Photovoltaic system

Technical Field

The utility model relates to a photovoltaic equipment technical field especially relates to a photovoltaic system.

Background

With the gradual improvement of environmental requirements, photovoltaic power generation is widely applied due to the advantages of no pollution, sustainability, low cost and the like, the basic unit of photovoltaic power generation is a photovoltaic module which is used for absorbing solar energy and converting the solar energy into electric energy, and a photovoltaic system which floats the photovoltaic module in an offshore area for power generation becomes the development trend of the future photovoltaic module due to the advantages of no land resource occupation, self-cooling effect, high power generation capacity and the like because the ocean area occupies about 71 percent of the earth surface area.

However, the existing photovoltaic system is easily affected by weather, especially in the weather of strong wind and sea waves, seawater enters the photovoltaic module, the photovoltaic module is easily damaged, the photovoltaic module needs to work in a water-immersed or water-immersed environment for a long time, the packaging requirement of the photovoltaic module is high, but the situation that the seawater enters the photovoltaic module inevitably occurs, and the product performance and the service life of the photovoltaic module are affected.

SUMMERY OF THE UTILITY MODEL

In view of the above, there is a need to provide a photovoltaic system, which can not generate electricity in water or humid environment for a long time.

The utility model provides a photovoltaic system, includes support and photovoltaic module, photovoltaic module is including terminal box, first panel, first encapsulated layer, battery layer, second encapsulated layer and the second panel that stacks gradually the setting, first panel with the second panel is high printing opacity's photovoltaic tempering/half toughened glass board, the support has first end and cylindric second end, first end cover establish and fixed connection in photovoltaic module's edge.

Above-mentioned photovoltaic system, through setting first panel and second panel to high non-light tight photovoltaic toughened glass board or high non-light tight semi-toughened glass board, and with the cooperation of first encapsulated layer and second encapsulated layer in order to improve photovoltaic module's waterproof sealing performance, through being fixed in photovoltaic module on the support that has cylindric second tip, this support is direct to be established on external mounting through second tip cover, simple structure and simple to operate, and can make photovoltaic module rotate round external mounting, thereby can be in strong wind wave weather, photovoltaic module can swing along with it, in order to reduce the influence of the weather that photovoltaic system receives, improve photovoltaic system's life.

In one embodiment, the cross section of the first end part along the stacking direction of the photovoltaic module is a U-shaped structure, the edge of the photovoltaic module is inserted into the U-shaped structure, and the photovoltaic module is fixed on the inner wall of the U-shaped structure through two-component structural adhesive.

Above-mentioned photovoltaic system is the U-shaped structure through setting first end to the cross section along the range upon range of direction of photovoltaic module to the installation of photovoltaic module and support, and can fix support and photovoltaic module as an organic whole betterly through two ingredient structural adhesive.

In one embodiment, the battery layer comprises at least one group of battery strings, each battery string comprises a plurality of main grid silicon batteries, and the plurality of main grid silicon batteries are connected in series through tinned copper strips.

Above-mentioned photovoltaic system establishes ties a plurality of main bars polycrystalline silicon cells through the tinned copper strips and connects in order to realize the electricity of a plurality of main bars polycrystalline silicon cells and connect, and simple structure and installation are comparatively convenient.

In one embodiment, the surface of the tinned copper tape facing the first panel is provided with a reflective film.

Above-mentioned photovoltaic system is provided with the reflective membrane through the surface at the tinned copper strips orientation first panel to improve the utilization ratio of solar energy.

In one embodiment, at least one set of through holes is formed in the first panel, each set of through holes is arranged corresponding to a bus bar of each battery string, and the bus bars are led out from the through holes and electrically connected with the junction box.

According to the photovoltaic system, the junction box is arranged, and the junction box is electrically connected with the bus bar so as to transmit electric energy formed by the photovoltaic modules to external equipment.

In one embodiment, each group of through holes includes three through holes, each battery string includes three bus bars, the bus bars correspond to the through holes one by one, the junction box includes two first junction boxes and one second junction box, the first junction box includes a first box body and a cable electrically connected to the first box body, the second junction box includes a second box body, and the first box body and the second box body are electrically connected to the bus bars and fixed on the surface of the first panel through silica gel.

Above-mentioned photovoltaic system sets up split type structure through with the terminal box to fix first terminal box and second terminal box on first panel through silica gel, so that the transmission of electric energy.

In one embodiment, the first box body and the second box body are internally provided with metal terminals and diodes, the metal terminals are fixed at a set height of the first box body or the second box body and are electrically connected with the bus bars, the metal terminals in the first box body are electrically connected with the cables, the diodes are fixed on the metal terminals, and pouring sealant is poured and cured in the first box body and the second box body respectively.

Above-mentioned photovoltaic system is through pouring the casting glue in first box body and second box body to improve the waterproof sealing effect of first terminal box and second terminal box, and then improve photovoltaic module's waterproof sealing effect.

In one embodiment, the surfaces of the first box and the second box, which are contacted with the first panel, are ion-treated surfaces.

Above-mentioned photovoltaic system carries out ion treatment through the surface to first box body and second box body and first panel contact to make this surface can fix on first panel better through silica gel.

In one embodiment, the outer surface of the metal terminal is an ion-treated surface and is covered with an anticorrosive layer.

Above-mentioned photovoltaic system carries out ion treatment so that metal terminal and busbar fixed connection betterly through the surface to metal terminal, and is formed with the anticorrosive coating in order to improve waterproof sealing effect through the surface at metal terminal, and then improves photovoltaic module's waterproof sealing effect.

In one embodiment, the material of the first encapsulation layer is POE, and/or the material of the second encapsulation layer is POE.

Above-mentioned photovoltaic system sets POE to through the preparation material with first encapsulation layer and/or second encapsulation layer to improve photovoltaic module's waterproof encapsulation effect.

Drawings

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

FIG. 2 is a cross-sectional view taken along line A-A of the photovoltaic system of FIG. 1;

FIG. 3 is a cross-sectional view of the photovoltaic system of FIG. 1 taken along line B-B;

FIG. 4 is a cross-sectional view of the photovoltaic system of FIG. 1 taken along line C-C;

FIG. 5 is a cross-sectional view of the photovoltaic system of FIG. 1 taken along line D-D;

fig. 6 is a schematic structural diagram of a battery string in a photovoltaic system according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a photovoltaic module in a photovoltaic system according to an embodiment of the present invention.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1, 2, 3, 4 and 5, the present invention provides a photovoltaic system 10, the photovoltaic system 10 is applied on the sea surface, and includes a photovoltaic module 100 and a support 200, the photovoltaic module 100 includes a junction box 110, a first panel 120, a first encapsulation layer 130, a battery layer 140, a second encapsulation layer 150 and a second panel 160, which are sequentially stacked, the first panel 120 and the second panel 160 are both highly transparent photovoltaic tempered/semi-tempered glass plates, the thickness of the first panel 120 may be 2mm-3mm when specifically disposed, preferably, the thickness of the first panel 120 may be 2.5mm, and also, the thickness of the second panel 160 may be 2mm-3mm, preferably, the thickness of the second panel 160 may be 2.5mm, of course, the thicknesses of the first panel 120 and the second panel 160 are not limited to the above range values, but may be other values, the specific thickness of the first and second panels 120, 160 is determined based on the actual condition of the photovoltaic system 10; the bracket 200 has a first end portion 210 and a cylindrical second end portion 220, the first end portion 210 is covered on the outer edge of the photovoltaic module 100, and the first end portion 210 is fixedly connected with the edge of the photovoltaic module 100, when the bracket is specifically arranged, the second end portion 220 may be a continuous cylindrical structure, or may be a discontinuous cylindrical structure, such as a cylindrical structure with a certain gap, the bracket 200 needs to have certain connection strength and corrosion resistance, preferably, the bracket 200 adopts 6063-T5 aluminum profile, the surface of the profile is subjected to anodic oxidation treatment, the film thickness is greater than 10mm, or may be in other structural forms meeting the requirements.

Above-mentioned photovoltaic system 10, through setting first panel 120 and second panel 160 to high printing opacity's photovoltaic toughened glass board or high printing opacity's half toughened glass board, and cooperate with first encapsulated layer 130 and second encapsulated layer 150 in order to improve photovoltaic module 100's waterproof sealing performance, through being fixed in photovoltaic module 100 on the support 200 that has cylindric second end 220, this support 200 directly overlaps through second end 220 and establishes on external mounting, simple structure and simple to operate, and can make photovoltaic module 100 can rotate round external mounting, thereby can be in strong wind wave weather, photovoltaic module 100 can swing thereupon, in order to reduce the influence of the weather that photovoltaic system 10 receives, improve photovoltaic system 10's life.

In order to facilitate the fixed connection of the photovoltaic module 100 and the bracket 200, as shown in fig. 1 and 4, in a preferred embodiment, the cross section of the first end portion 210 along the stacking direction of the photovoltaic module 100 is a U-shaped structure, the edge of the photovoltaic module 100 is inserted into the U-shaped structure, and the edge of the photovoltaic module 100 is fixed on the inner wall of the U-shaped structure by the two-component structural adhesive 300.

In the photovoltaic system 10, the first end portion 210 is configured to have a U-shaped cross section along the stacking direction of the photovoltaic module 100, so that the photovoltaic module 100 and the bracket 200 can be conveniently mounted, and the bracket 200 and the photovoltaic module 100 can be better fixed into a whole by the two-component structural adhesive 300. In a specific arrangement, the cross section of the first end portion 210 along the stacking direction of the photovoltaic module 100 may be a U-shaped structure, so that an area capable of contacting with the edge of the photovoltaic module 100 is large, and the connection strength between the first end portion 210 and the photovoltaic module 100 is improved, thereby improving the structural stability of the photovoltaic system 10, and of course, the structural form of the cross section of the first end portion 210 along the stacking direction of the photovoltaic module 100 is not limited to the U-shaped structure, and may be other structural forms, such as a convex-concave structure, and in this case, the edge of the photovoltaic module 100 may be a concave-convex structure matching with the U-shaped structure; the edge of the photovoltaic module 100 can be fixed on the inner wall of the U-shaped structure by the two-component structural adhesive 300, and can also be fixedly connected by other adhesives, of course, the connection mode of the photovoltaic module 100 and the first end portion 210 is not limited to adhesive bonding, and can also be in other structural forms, such as snap connection. In addition, in order to protect the photovoltaic module 100, corner protectors 400 may be disposed at four corners of the photovoltaic module 1 to reduce damage to the photovoltaic module 100 from the outside.

To facilitate the output of electrical energy, in a preferred embodiment, as shown in fig. 1, 2, 3, 4, 5, 6 and 7, the battery layer 140 includes at least one set of battery strings 141, each battery string 141 includes a plurality of main-grid silicon batteries 142, and the plurality of main-grid silicon batteries 142 are connected in series by tinned copper tapes 143.

According to the photovoltaic system 10, the plurality of main grid polycrystalline cells 142 are connected in series through the tinned copper strips 143 to achieve electric connection of the plurality of main grid polycrystalline cells 142, and the photovoltaic system is simple in structure and convenient to install. In a specific arrangement, the battery layer 140 may include a set of battery strings 141, and may also include a plurality of sets of battery strings 141; the number of the main grid crystalline silicon cells 142 in each cell string 141 can be 5, 9, 12, or other numbers, and the number of the main grid crystalline silicon cells 142 in each cell string 141 is determined according to the specific situation of the photovoltaic system 10; the plurality of main grid crystalline silicon cells 142 can be connected in series through the tinned copper strips 143 with the thickness of 0.25mm and the width of 0.9mm-1.0mm, of course, the structural size of the tinned copper strips 143 is not limited to the above, and can be other sizes, and the electric connection mode of the plurality of main grid crystalline silicon cells 142 is not limited to the tinned copper strips 143, and can also be other structural forms; the battery string 141 may be formed by directly depositing a plurality of main gate-silicon batteries 142 on the tinned copper tape 143, but is not limited thereto, and other manufacturing processes may be used.

In order to make better use of the solar energy, as shown in fig. 6, in particular, the surface of the tinned copper tape 143 facing the first panel 120 is provided with a reflective film 144.

In the photovoltaic system 10, the reflective film 144 is disposed on the surface of the tinned copper tape 143 facing the first panel 120, so as to improve the utilization rate of solar energy. In a specific setting, the reflective film 144 may be disposed in an area of the tinned copper tape 143 not covered by the main grid polycrystalline cell 142, so as to diffusely reflect light rays covered on the tinned copper tape 143 onto the main grid polycrystalline cell 142, so as to increase the total amount of solar energy used by the main grid polycrystalline cell 142 to convert into electric energy; the reflective film 144 may be formed on the surface of the tinned copper tape 143 facing the first panel 120 by evaporation, but is not limited to evaporation, and other suitable preparation processes may be adopted; in order to enhance the diffuse reflection of light, the reflective film 144 is not limited to be disposed on the tinned copper tape 143, and other structures may also be adopted, such as disposing the tinned copper tape 143 facing the surface of the first panel 120 in an uneven structure.

In order to facilitate the extraction of electric energy, as shown in fig. 7, specifically, at least one set of through holes is provided on the first panel 120, each set of through holes is provided corresponding to the bus bar 145 of each battery string 141, the bus bar 145 is extracted from the through holes, and the bus bar 145 is electrically connected to the junction box 110.

The photovoltaic system 10 is provided with the junction box 110, and the junction box 110 is electrically connected with the bus bar 145 to transmit the electric energy formed by the photovoltaic module 100 to external equipment. In a specific arrangement, the number of the through holes on the first panel 120 is determined according to the number of the battery strings 141, each battery string 141 corresponds to one group of the through holes to lead out the bus bars 145 of the battery string 141, and the bus bars 145 and the junction box 110 may be electrically connected by welding, but the invention is not limited thereto, and other connection methods may also be used.

In a preferred embodiment, as shown in fig. 1, 5 and 7, each set of through holes includes three through holes, each battery string 141 includes three bus bars 145, the bus bars 145 correspond to the through holes one by one, the junction box 110 includes two first junction boxes 111 and one second junction box 112, the first junction box 111 includes a first box 113 and a cable 114 electrically connected to the first box 113, the second junction box 112 includes a second box 115, the first box 113 and the second box 115 are electrically connected to the bus bars 145, and the first box 115 and the second box 115 are respectively fixed on a surface of the first panel 120 away from the second panel 160 through silicone rubber.

The photovoltaic system 10 is configured as a split structure by disposing the junction box 110, and the first junction box 111 and the second junction box 112 are fixed on the first panel 120 by silica gel, so as to facilitate the transmission of electric energy. During specific setting, the cables 114 of the two first junction boxes 111 are respectively connected with a positive connector and a negative connector, and the photovoltaic module 100 can be electrically connected with external equipment through the split first junction box 111 and the split second junction box 112; the first box 113 and the second box 115 can be fixed on the surface of the first panel 120 away from the second panel 160 through silicone, but the connecting member is not limited to silicone, and other adhesives and connecting methods can be used.

Specifically, as shown in fig. 7, a metal terminal 116 and a diode 117 are disposed in each of the first box 113 and the second box 115, the metal terminal 116 is fixed at a set height of the first box 113 or the second box 115, a partial region of the surface of the metal terminal 116 facing the first panel 120 is electrically connected to the bus bar 145, the metal terminal 116 located in the first box 113 is electrically connected to the cable 114, the diode 117 is fixed to the metal terminal 116, and potting adhesives are poured and cured in the first box 113 and the second box 115, respectively.

According to the photovoltaic system 10, the first box body 113 and the second box body 115 are filled with the pouring sealant, so that the waterproof sealing effect of the first junction box 111 and the waterproof sealing effect of the second junction box 112 are improved, and the waterproof sealing effect of the photovoltaic module 100 is further improved. In a specific arrangement, the bus bar 145, the metal terminal 116, the diode 117, and the cable 114 transmit the electric power of the battery string 141 to the outside, by fixing the metal terminal 116 at a set height of the first case 113 or the second case 115, the amount of glue applied to cover the metal terminal 116 and the diode 117 is large, in addition, the split junction box 110 has smaller parts, simpler processing and assembling process, the two first junction boxes 111 and the second junction box 112 are arranged in a split mode, so that the single bodies of the first junction box 111 and the second junction box 112 are small in size, the glue filling amount is reduced, the cost is saved, the sealing effect is better through glue filling and sealing, certainly, the waterproof sealing mode of the junction box 110 is not limited to the glue filling and sealing, a sealing ring can be arranged on the box cover, through the dual seal mode of encapsulating sealed and sealing washer sealed with further improvement waterproof sealing effect.

In order to facilitate the fixing of the junction box 110 to the first panel 120, specifically, the surfaces of the first case 113 and the second case 115, which contact the first panel 120, are ion-treated surfaces.

According to the photovoltaic system 10, the surfaces of the first box 113 and the second box 115, which are in contact with the first panel 120, are subjected to ion treatment, so that the surfaces can be well fixed on the first panel 120 through the silica gel, and at this time, the silica gel can firmly and reliably bond the first box 113 and the first panel 120, and the second box 115 and the second panel 160, so that the reliability of the fixed connection between the junction box 110 and the first panel 120 is improved. In a specific setting, the ion migration prevention treatment may be performed on the bottom of the junction box 110 and the glue filling position in advance, and of course, in order to facilitate the connection between the junction box 110 and the first panel 120, other pretreatment may be performed.

Specifically, the outer surface of the metal terminal 116 is an ion-treated surface, and the outer surface of the metal terminal 116 is covered with an anticorrosive layer.

Above-mentioned photovoltaic system 10, through carrying out ion treatment to the surface of metal terminal 116 so that metal terminal 116 and busbar 145 are better fixed connection, and through being formed with the anticorrosive coating at the surface of metal terminal 116 in order to improve waterproof sealing effect, and then improve photovoltaic module 100's waterproof sealing effect. In a specific setting, an ion treatment may be performed on the outer surface of the metal terminal 116 first, and then the outer surface of the metal terminal 116 is covered with an anti-corrosion layer, where the ion treatment may be an ion migration prevention treatment, but is not limited thereto, and the anti-corrosion layer may be a structural layer such as an anti-corrosion paint layer, an epoxy resin layer, and the like, which is formed on the outer surface of the metal terminal 116 by plastic spraying.

In order to improve the waterproof sealing effect, in a preferred embodiment, the material of the first sealing layer 130 is POE, and/or the material of the second sealing layer 150 is POE.

According to the photovoltaic system 10, the preparation material of the first encapsulating layer 130 and/or the second encapsulating layer 150 is set to be POE with lower water permeability, and other encapsulating materials with lower water permeability can be further used, so that the waterproof encapsulating effect of the photovoltaic module 100 is improved. In a specific arrangement, the material of the first encapsulating layer 130 may be POE (polyethylene oxide), and the material of the second encapsulating layer 150 may be other materials than POE, such as EVA (ethylene-vinyl acetate copolymer); the material of the first encapsulant layer 130 may be other materials besides POE, such as EVA, and the material of the second encapsulant layer 150 may be POE; of course, the materials of the first encapsulant layer 130 and the second encapsulant layer 150 may be POE, and the specific materials of the first encapsulant layer 130 and the second encapsulant layer 150 may be determined according to the actual situation of the photovoltaic system 10.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. The utility model provides a photovoltaic system, includes support and photovoltaic module, photovoltaic module is including terminal box, first panel, first encapsulated layer, battery layer, second encapsulated layer and the second panel that stacks gradually the setting, its characterized in that, first panel with the second panel is high printing opacity's photovoltaic tempering/half toughened glass board, the support has first tip and cylindric second tip, first tip cover establish and fixed connection in photovoltaic module's edge.

2. The photovoltaic system according to claim 1, wherein the first end portion has a U-shaped cross section along the stacking direction of the photovoltaic modules, and the edge of the photovoltaic module is inserted into the U-shaped cross section and fixed on the inner wall of the U-shaped cross section by two-component structural adhesive.

3. The photovoltaic system of claim 1, wherein the cell layer comprises at least one set of cell strings, each cell string comprising a plurality of main gate silicon cells connected in series by tinned copper tape.

4. The photovoltaic system of claim 3, wherein a surface of the tinned copper tape facing the first panel is provided with a reflective film.

5. The photovoltaic system of claim 3, wherein the first panel has at least one set of through holes, each set of through holes is disposed corresponding to a bus bar of each of the cell strings, and the bus bar is led out from the through holes and electrically connected to the junction box.

6. The photovoltaic system of claim 5, wherein each set of through holes comprises three through holes, each battery string comprises three bus bars, the bus bars and the through holes correspond to each other one by one, the junction box comprises two first junction boxes and one second junction box, the first junction box comprises a first box body and a cable electrically connected to the first box body, the second junction box comprises a second box body, and the first box body and the second box body are respectively electrically connected to the bus bars and are fixed on the surface of the first panel through silica gel.

7. The photovoltaic system of claim 6, wherein the surfaces inside the first and second boxes and in contact with the first panel are ion-treated surfaces.

8. The photovoltaic system according to claim 6, wherein a metal terminal and a diode are disposed in the first box and the second box, the metal terminal is fixed at a predetermined height of the first box or the second box and electrically connected to the bus bar, the metal terminal in the first box is electrically connected to the cable, the diode is fixed to the metal terminal, and a potting compound is respectively poured and cured in the first box and the second box.

9. The photovoltaic system of claim 8, wherein the outer surface of the metal terminal is an ion treated surface and is covered with an anti-corrosion layer.

10. Photovoltaic system according to claim 1, characterized in that the material of the first encapsulant layer is POE and/or the material of the second encapsulant layer is POE.

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