CN217010807U

CN217010807U - Photovoltaic device and photovoltaic system

Info

Publication number: CN217010807U
Application number: CN202220145644.XU
Authority: CN
Inventors: 丁常林; 陈登运; 孙俊; 周华明; 石刚; 李岩
Original assignee: Tongwei Solar Hefei Co Ltd
Current assignee: Tongwei Solar Hefei Co Ltd
Priority date: 2022-01-19
Filing date: 2022-01-19
Publication date: 2022-07-19
Anticipated expiration: 2032-01-19

Abstract

The utility model relates to a photovoltaic device and a photovoltaic system, the photovoltaic device comprises: the tile stacking assembly is provided with a first opening, a second opening and a third opening; the first junction box is arranged corresponding to the first opening, and the first junction box is used for being adjacent to or arranged at intervals with the main shaft of the tracking support. Above-mentioned photovoltaic device, in the installation, at first install first terminal box on the stack tile subassembly to correspond the setting with first trompil, then, install the stack tile subassembly on tracking support main shaft. Because the main shaft of the tracking support is arranged on the central line of the tile-overlapping assembly, and the first junction box is adjacent to or spaced from the main shaft of the tracking support, the first junction box and the main shaft of the tracking support cannot be overlapped in the vertical direction, the whole load performance of the photovoltaic device is improved, the risk of the central position of the tile-overlapping assembly being cracked is reduced, and the service life of the photovoltaic device is prolonged.

Description

Photovoltaic device and photovoltaic system

Technical Field

The utility model relates to the technical field of new energy equipment, in particular to a photovoltaic device and a photovoltaic system.

Background

With the development of the photovoltaic field technology, the tracking support is a typical photovoltaic module installation mode, and the tracking support can directionally adjust the light receiving angle of the photovoltaic device according to the solar azimuth angle, so that the power generation capacity of the photovoltaic device is maximized. The single-row tracking support is one of the wider application scenes of the tracking support, and for the arrangement of the photovoltaic components of the single-row tracking support, the support main shaft and the back center position of the photovoltaic component are in a spatial overlapping state in the vertical direction.

In the prior art, a junction box is usually arranged at the center of the back of a photovoltaic module, and the junction box has a certain thickness. According to the technical scheme, when the photovoltaic module is subjected to front load, the bending deformation degree of the central area, particularly the central position, of the photovoltaic module is maximum, the junction box can be directly contacted with the main shaft of the single-row tracking support, and further large pressure is generated, and when the load capacity is continuously increased, the risk of fragmentation of the photovoltaic module is high.

SUMMERY OF THE UTILITY MODEL

Based on this, it is necessary to overcome the defects in the prior art, and provide a photovoltaic device and a photovoltaic system, which can effectively reduce the risk of cracking of the shingle assembly and improve the service life.

The technical scheme is as follows: a photovoltaic device, comprising: the tile stacking assembly is provided with a first opening, a second opening and a third opening, the second opening and the third opening are arranged close to two opposite ends of the tile stacking assembly relative to the center line of the tile stacking assembly respectively, and the first opening is arranged between the center line of the tile stacking assembly and the second opening; the first junction box is arranged corresponding to the first opening and is used for being adjacent to or spaced from the tracking support main shaft.

Above-mentioned photovoltaic device, in the installation, at first install first terminal box on the stack tile subassembly to correspond the setting with first trompil, then, install the stack tile subassembly on tracking support main shaft. Because the main shaft of the tracking support is arranged on the central line of the tile-overlapping assembly, and the first junction box is adjacent to or spaced from the main shaft of the tracking support, the first junction box and the main shaft of the tracking support cannot be overlapped in the vertical direction, the whole load performance of the photovoltaic device is improved, the risk of the central position of the tile-overlapping assembly being cracked is reduced, and the service life of the photovoltaic device is prolonged.

In one embodiment, the photovoltaic device further comprises a second junction box and a third junction box, the second junction box and the third junction box are correspondingly arranged on the second opening and the third opening respectively, and the second junction box and the third junction box are used for wiring.

In one embodiment, the first opening, the second opening and the third opening are disposed on the tile stack at intervals along a length direction of the tile stack, and a center line of the tile stack extends along a width direction of the tile stack.

In one embodiment, the tile stack assembly includes a tile stack cell string and a back plate, the tile stack cell string is connected to the back plate, and the first opening, the second opening and the third opening are disposed on the back plate.

In one embodiment, the back sheet is one of a multilayer polymer film, photovoltaic glass, and grid glass.

In one embodiment, the laminated cell assembly further comprises a first connector, and the laminated cell string is connected with the back plate through the first connector.

In one embodiment, the stack assembly further comprises a front plate connected to a side of the stack string facing away from the back plate.

In one embodiment, the stack assembly further comprises a second connector, and the front plate is connected to the stack string through the second connector.

In one embodiment, the first connecting member and the second connecting member are respectively one of a POE adhesive film, an EVA adhesive film, or an EPE structure co-extrusion adhesive film.

A photovoltaic system comprises a tracking support main shaft and a photovoltaic device, wherein the tracking support main shaft is connected with a tile stacking assembly.

Above-mentioned photovoltaic system, in the installation, at first install first terminal box on the stack tile subassembly to correspond the setting with first trompil, then, install the stack tile subassembly on tracking support main shaft. Because the main shaft of the tracking support is arranged on the central line of the laminated tile assembly and the first junction box is adjacent to or arranged at an interval with the main shaft of the tracking support, the first junction box and the main shaft of the tracking support cannot be overlapped in the vertical direction, the integral load performance of the photovoltaic device is improved, the risk of fragmentation of the central position of the laminated tile assembly is reduced, and the service life of the photovoltaic device is prolonged.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a first schematic structural diagram of a photovoltaic device according to an embodiment;

FIG. 2 is a second schematic structural diagram of a photovoltaic device according to an embodiment;

FIG. 3 is a first schematic structural view of a shingle assembly according to an embodiment;

fig. 4 is a schematic structural diagram of a shingle assembly according to an embodiment.

Description of the reference numerals:

100. a photovoltaic device; 110. a shingle assembly; 111. a first opening; 112. a second opening; 113. a third opening; 114. a front plate; 115. a shingled battery string; 116. a back plate; 120. a first junction box; 130. a second junction box; 140. a third junction box; 200. and tracking the main shaft of the bracket.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanying figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the second feature or the first and second features may be indirectly contacting each other through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" 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. As used herein, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are for purposes of illustration only and do not denote a single embodiment.

Referring to fig. 1 to 4, fig. 1 shows the present inventionThe structure of the photovoltaic device 100 in the first embodiment is schematically illustrated as a first; fig. 2 shows a second schematic structural diagram of the photovoltaic device 100 in an embodiment of the utility model; FIG. 3 shows a first schematic structural view of a shingle assembly 110 in an embodiment of the present invention; fig. 4 shows a second schematic structural diagram of the shingle assembly 110 in an embodiment of the present invention. An embodiment of the present invention provides a photovoltaic device 100, including: a stack assembly 110 and a first junction box 120. The tile stacking assembly 110 is provided with a first opening 111, a second opening 112 and a third opening 113, the second opening 112 and the third opening 113 are respectively arranged near two opposite ends of the tile stacking assembly 110 relative to the center line of the tile stacking assembly 110, and the first opening 111 is arranged between the center line of the tile stacking assembly 110 and the second opening 112. For example, as shown in FIG. 1, the centerline is a straight line Z₁. The first junction box 120 is disposed corresponding to the first opening 111, and the first junction box 120 is disposed adjacent to or spaced apart from the tracking bracket main shaft 200.

In the installation process of the photovoltaic device 100, the first junction box 120 is first installed on the tile stack assembly 110 and is disposed corresponding to the first opening 111, and then the tile stack assembly 110 is installed on the tracking bracket spindle 200. Because the main shaft of the tracking bracket is arranged on the central line of the tile folding assembly 110, and the first junction box 120 is adjacent to or spaced from the main shaft of the tracking bracket, the first junction box 120 and the main shaft of the tracking bracket cannot be overlapped in the vertical direction, which is beneficial to improving the overall load performance of the photovoltaic device 100, reducing the risk of the central position of the tile folding assembly 110 being cracked, and improving the service life of the photovoltaic device 100.

It should be noted that the battery modules in the stack assembly 110 need to be connected, the terminals of the battery modules are divided into an anode, a cathode and a bypass, the second opening 112 and the third opening 113 are used for leading out the anode and the cathode respectively, and the first opening 111 is used for leading out the bypass of the battery module and is electrically connected to the first junction box 120.

In one embodiment, referring to fig. 1, the photovoltaic device 100 further includes a second junction box 130 and a third junction box 140. The second junction box 130 and the third junction box 140 are respectively and correspondingly disposed on the second opening 112 and the third opening 113, and both the second junction box 130 and the third junction box 140 are used for connecting wires. Thus, the second junction box 130 and the third junction box 140 can improve the convenience of connecting the positive electrode and the negative electrode in the laminated assembly 110, thereby improving the overall quality of the photovoltaic device 100.

In an embodiment, referring to fig. 1 and fig. 2, the first opening 111, the second opening 112, and the third opening 113 are disposed on the laminated assembly 110 at intervals along a length direction of the laminated assembly 110, and a center line of the laminated assembly 110 extends along a width direction of the laminated assembly 110. Thus, the processing and installation of the tile stack assembly 110 are facilitated, which is beneficial to further improving the installation convenience and the overall quality of the photovoltaic device 100.

In order to understand and explain the length direction and the width direction of the laminated assembly 110, taking fig. 1 as an example, the length direction of the laminated assembly 110 is a straight line S in fig. 1₁In the direction indicated by any arrow above. The width direction of the shingle assembly 110 is the line S in FIG. 1₂In the direction indicated by any of the above arrows.

In one embodiment, referring to fig. 3, the stack assembly 110 includes a stack string 115 and a backing plate 116. The shingled battery string 115 is connected to the back plate 116, and the first opening 111, the second opening 112, and the third opening 113 are disposed on the back plate 116. Thus, the back plate 116 can protect and support the laminated tile battery string 115, which is beneficial to improving the overall strength of the laminated tile assembly 110, and further improving the service life of the laminated tile assembly 110.

Alternatively, the shapes of the first, second and

third openings

111, 112 and 113 may be square, circular, rectangular or other regular or irregular patterns.

Specifically, referring to fig. 4, the first opening 111 is circular. The second opening 112 is circular. The third opening 113 has a circular shape. Therefore, the processing is convenient, the reliability is high, the processing efficiency is improved, and the production cost is reduced. The present embodiment provides only one specific implementation of the first opening 111, the second opening 112 and the third opening 113, but not limited thereto.

Alternatively, the material of the back plate 116 may be a multilayer polymer film, photovoltaic glass, grid glass or other materials.

Specifically, in the present embodiment, please refer to fig. 4, the back plate 116 is a photovoltaic glass. Therefore, the structure is stable, the reliability is high, and the overall quality and the service life of the laminated assembly 110 are improved. The present embodiment provides only a specific material selection for the back plate 116, but not limited thereto.

In one embodiment, the stack assembly 110 further comprises a first connector (not shown), and the stack string 115 is connected to the back plate 116 through the first connector. Thus, the connection effect of the first connecting member is favorable for improving the connection stability of the shingle battery string 115 and the back plate 116, so as to improve the overall structural stability of the photovoltaic device 100.

Optionally, the first connecting member may be a POE adhesive film, an EVA adhesive film, or an EPE structure for co-extrusion adhesive film or other connecting materials.

Specifically, the first connecting piece is a POE encapsulation adhesive film. POE generally refers to Polyolefin elastomers (Polyolefin elastomers) such as ethylene-octene copolymers, ethylene-butene copolymers, and ethylene-hexene copolymers, and is produced by using metallocene catalysis, and POE for photovoltaic is an ethylene-octene copolymer. So, the rate of permeating water is low, is favorable to improving photovoltaic device 100's weatherability, and the while production yield is high, and production efficiency is high, is favorable to improving photovoltaic device 100's production efficiency. The present embodiment provides only a specific embodiment of the first connecting element, but not limited thereto.

In one embodiment, referring to fig. 3, the stack assembly 110 further includes a front plate 114, and the front plate 114 is connected to a side of the stack string 115 facing away from the back plate 116. Thus, the protection effect on the tile stack battery string 115 can be further provided, which is beneficial to further improving the structural stability of the tile stack assembly 110 and meets the requirement of double-sided work.

Alternatively, the material of the front plate 114 may be a multi-layer polymer film, photovoltaic glass, grid glass, or other material.

Specifically, in the present embodiment, referring to fig. 4, the front plate 114 is a photovoltaic glass. Therefore, the structure is stable, the reliability is high, and the overall quality and the service life of the laminated assembly 110 are improved. The present embodiment provides only a specific material selection for the front plate 114, but not limited thereto.

In one embodiment, stack assembly 110 further comprises a second connector (not shown) by which front plate 114 is connected to stack string 115. Thus, the connection effect of the second connecting member is beneficial to improving the connection stability of the shingled cell string 115 and the front plate 114, and further improving the overall structural stability of the photovoltaic device 100.

Optionally, the second connecting member may be a POE adhesive film, an EVA adhesive film, or an EPE structure for a co-extrusion adhesive film or other connecting materials.

Specifically, the second connecting piece is a POE encapsulation glue film. POE generally refers to Polyolefin elastomers (Polyolefin elastomers) such as ethylene-octene copolymers, ethylene-butene copolymers, and ethylene-hexene copolymers, and is produced by using metallocene catalysis, and POE for photovoltaic is an ethylene-octene copolymer. So, the rate of permeating water is low, is favorable to improving photovoltaic device 100's weatherability, and the while production yield is high, and production efficiency is high, is favorable to improving photovoltaic device 100's production efficiency. The present embodiment provides only a specific implementation of the second connecting member, but not limited thereto.

In one embodiment, referring to fig. 1 and 2, a photovoltaic system includes a tracking support shaft 200 and a photovoltaic apparatus 100 as described above, wherein the tracking support shaft 200 is connected to a shingle assembly 110.

In the installation process of the photovoltaic system, the first junction box 120 is first installed on the tile stack assembly 110 and is arranged corresponding to the first opening 111, and then the tile stack assembly 110 is installed on the tracking support main shaft 200. Because the main shaft of the tracking bracket is arranged on the central line of the tile folding assembly 110, and the first junction box 120 is adjacent to or spaced from the main shaft of the tracking bracket, the first junction box 120 and the main shaft of the tracking bracket cannot be overlapped in the vertical direction, which is beneficial to improving the overall load performance of the photovoltaic device 100, reducing the risk of the central position of the tile folding assembly 110 being broken, and improving the service life of the photovoltaic device 100.

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 express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the utility model, and these changes and modifications are all within the scope of the utility model. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A photovoltaic device, comprising:

the tile stacking assembly is provided with a first opening, a second opening and a third opening, the second opening and the third opening are arranged close to two opposite ends of the tile stacking assembly relative to the center line of the tile stacking assembly respectively, and the first opening is arranged between the center line of the tile stacking assembly and the second opening;

the first junction box is arranged corresponding to the first opening and is used for being adjacent to or spaced from the tracking support main shaft.

2. The photovoltaic device according to claim 1, further comprising a second junction box and a third junction box, wherein the second junction box and the third junction box are respectively disposed on the second opening and the third opening, and both the second junction box and the third junction box are used for wiring.

3. The photovoltaic device according to claim 1, wherein the first opening, the second opening and the third opening are spaced apart from each other along a length direction of the tile-stacked assembly, and a center line of the tile-stacked assembly extends along a width direction of the tile-stacked assembly.

4. The photovoltaic device of claim 1, wherein the shingle assembly comprises a shingle string and a backing sheet, the shingle string being connected to the backing sheet, the first opening, the second opening, and the third opening being disposed on the backing sheet.

5. The photovoltaic device of claim 4, wherein the back sheet is one of a multilayer polymer film, photovoltaic glass, and grid glass.

6. The photovoltaic device of claim 4, wherein the shingle assembly further comprises a first connector through which the shingle string is connected to the backsheet.

7. The photovoltaic device of claim 6, wherein the shingle assembly further comprises a front sheet connected to a side of the shingle string facing away from the backsheet.

8. The photovoltaic device of claim 7, wherein the stack assembly further comprises a second connector, the front plate being connected to the string of stacked cells by the second connector.

9. The photovoltaic device of claim 8, wherein the first connecting member and the second connecting member are respectively one of a POE adhesive film, an EVA adhesive film, or an EPE structure co-extrusion adhesive film.

10. A photovoltaic system comprising a tracking gantry spindle and the photovoltaic apparatus of any of claims 1-9, the tracking gantry spindle being connected to the shingle assembly.