CN117587994A - Photovoltaic rainproof device and photovoltaic greenhouse - Google Patents

Abstract

The application discloses photovoltaic rain insensitive device and photovoltaic big-arch shelter, wherein, photovoltaic rain insensitive device includes the body to and set up in the roof on body top, with set up in the bottom plate of body bottom. The top fixed connection of roof and body, bottom plate and the bottom fixed connection of body. The top plate is used for covering edges on two sides of the joint on the light sensitive surface of the photovoltaic panel, and the bottom plate is used for covering edges on two sides of the joint on the backlight surface of the photovoltaic panel. The joints of the photovoltaic panel are filled through the body, so that the sealing effect of the joints is achieved. The top plate and the bottom plate limit the body to separate from the light sensitive surface or the backlight surface in the thickness direction of the photovoltaic panel, and play a role in preventing separation. Meanwhile, the top plate and the bottom plate respectively cover edges of the photosurface and the backlight surface of the photovoltaic panel, which are positioned on two sides of the joint, so that the waterproof sealing effect on the joint is further achieved, and rainwater is prevented from penetrating into the joint between the top plate and the photosurface of the photovoltaic panel.

Description

Photovoltaic rainproof device and photovoltaic greenhouse

Technical Field

The invention relates to the technical field of photovoltaic power generation, in particular to a photovoltaic rainproof device and a photovoltaic greenhouse.

Background

With the enhancement of environmental awareness, clean energy has become a major development direction of future energy. Solar power generation is widely developed and used as one of clean energy sources. In recent years, a composite agricultural light complementary mode combining photovoltaic power generation and an agricultural greenhouse is relatively mature, and the mode converts redundant light energy which meets the requirement of plant growth into electric energy, ensures agricultural production and simultaneously gives consideration to photovoltaic power generation.

The photovoltaic module generally adopts a longitudinal arrangement of 2 rows or 3 rows to arrange the photovoltaic panels, and as the photovoltaic panels receive different illumination to generate thermal expansion and cold contraction, gaps with thermal expansion and cold contraction are reserved during installation, and therefore horizontal joints and vertical joints exist on the ceilings of the photovoltaic panel array. In application, the problem of seam rain leakage is found when the photovoltaic array is directly used as a ceiling of a photovoltaic greenhouse. In order to solve the problem, the current industry generally adopts a mode of gluing joints to carry out joint filling treatment, or adopts an integrally formed hot dip galvanized steel sheet gutter or aluminum alloy section bar to fix the photovoltaic panel, thereby achieving the effect of sealing and preventing rain.

However, the glue spraying treatment mode has the problems of glue spraying, durability and the like, and frequent glue spraying on the photovoltaic array not only increases the maintenance cost, but also is extremely easy to damage the crystalline silicon panel due to treading. The aluminum alloy section bar or the hot dip galvanized steel sheet gutter has high manufacturing cost and is not suitable for large-area popularization.

Disclosure of Invention

The embodiment of the invention aims to provide a photovoltaic rainproof device and a photovoltaic greenhouse, which can solve the technical problem of rain leakage of the photovoltaic greenhouse in the prior art.

The technical scheme adopted by the embodiment of the invention for solving the technical problems is as follows:

according to a first aspect of the present application, the application discloses a photovoltaic flashing device comprising:

the photovoltaic panel comprises a body, a plurality of photovoltaic panels and a plurality of connecting pieces, wherein the body is used for filling a joint between two adjacent photovoltaic panels and is a strip-shaped elastic piece and comprises a top end and a bottom end opposite to the top end;

the top plate is fixedly connected with the top end of the body, the photovoltaic plates comprise photosurfaces, and the top plate is used for covering edges on two sides of a joint on the photosurfaces of two adjacent photovoltaic plates;

the bottom plate, the bottom plate with the bottom fixed connection of body, the photovoltaic board includes the backlight, the bottom plate is used for covering two adjacent edges of joint both sides on the photovoltaic board backlight.

Thus, the joints of the photovoltaic panel are filled through the body, and the sealing effect of the joints is achieved. The top plate and the bottom plate limit the body to separate from the light sensitive surface or the backlight surface in the thickness direction of the photovoltaic panel, and play a role in preventing separation. Meanwhile, the top plate and the bottom plate respectively cover edges of the photosurface and the backlight surface of the photovoltaic panel, which are positioned on two sides of the joint, so that the waterproof sealing effect on the joint is further achieved, and rainwater is prevented from penetrating into the joint between the top plate and the photosurface of the photovoltaic panel.

Optionally, the top plate includes a first extending edge extending to two sides of the body, the first extending edge includes a root fixedly connected with the body, and an end extending from the root to two sides of the body, and the end of the first extending edge is inclined to the bottom plate.

Optionally, the first extending edge is arched against the inner surface of the bottom plate, and the inner surface of the bottom plate is curved in a direction away from the bottom plate.

Optionally, a surface of the side of the top plate facing away from the bottom plate is an arc surface.

By adopting the structure, the rainwater falling on the top plate is directed to the two sides of the top plate along the direction of the flow velocity when the cambered surface slides down, so that the rainwater is guided to the two sides of the body by the upper surface of the top plate, and the rainwater is prevented from penetrating into the joint of the top plate and the photovoltaic plate by changing the water flow direction.

Optionally, the top plate is an elastic member having elastic deformation capability.

Optionally, the body is an elastic member having elastic deformation capability.

Optionally, a cavity for forming the air bag is formed inside the body, and the cavity extends along the length direction of the body.

When the photovoltaic panels on two sides of the joint are heated and expanded, the width of the joint is reduced, and the air bags in the body are extruded to generate elastic deformation to reduce the width of the air bags, so that the avoidance space required by the expansion of the photovoltaic panels is provided. Meanwhile, as the air bag is pressed, the body is tightly attached to the photovoltaic plates at two sides of the joint in the deformation process, so that the sealing waterproof capability between the body and the joint is ensured not to be influenced by thermal expansion and cold contraction of the photovoltaic plates.

Optionally, sealing strips for abutting against end surfaces of two sides of the joint are further arranged on two sides of the body, and the sealing strips protrude out of the side surface of the body.

Optionally, the body, the top plate and the bottom plate are an integrally formed structure.

According to a second aspect of the present application, the present application also discloses a photovoltaic greenhouse comprising:

a bracket;

the ceiling is fixed on the bracket and comprises a first slope surface and a second slope surface, a plurality of supporting beams for supporting the transparent film are distributed on the second slope surface, and the supporting beams are arranged in an arch shape;

the photovoltaic module comprises a plurality of photovoltaic plates arranged on the first slope surface, and the photovoltaic rainproof device is arranged between two adjacent photovoltaic plates.

The photovoltaic greenhouse disclosed by the application is characterized in that the photovoltaic rainproof device adopted between two adjacent photovoltaic plates is sealed and waterproof depending on the structure of the product, the photovoltaic rainproof device can be used for a whole life in single installation, maintenance is not needed, the device is simple in structure, the sealing performance is reliable, the manufacturing cost is low, and the device can be applied to large-scale photovoltaic greenhouses and greatly reduce the equipment production and operation and maintenance cost.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.

FIG. 1 is a schematic diagram of the overall structure of a photovoltaic greenhouse in an embodiment of the present invention;

fig. 2 is a schematic diagram of the overall structure of a photovoltaic rainproof device according to an embodiment of the present invention;

fig. 3 is a perspective cross-sectional view of a cross-section of a photovoltaic flashing device in accordance with an embodiment of the present invention;

fig. 4 is a schematic view of the overall structure of a photovoltaic rainproof device according to another embodiment of the present invention;

fig. 5 is a side view of a photovoltaic flashing device in accordance with yet another embodiment of the present invention;

fig. 6 is a schematic view of the overall structure of a photovoltaic rainproof device according to another embodiment of the present invention;

fig. 7 is a schematic view of the overall structure of a photovoltaic rainproof device according to another embodiment of the present invention;

fig. 8 is a schematic view of the overall structure of a photovoltaic rainproof device according to another embodiment of the present invention.

Reference numerals and corresponding meanings:

a bracket 100;

a ceiling 200;

photovoltaic module 300, photovoltaic panel 301;

a transparent film 400;

photovoltaic flashing 500, first waterproof strip 51, second waterproof strip 52;

the sealing device comprises a body 1, a cavity 10 and a sealing strip 11;

top panel 2, first extension 20, inner surface 21 of the first extension;

a bottom plate 3, a second extension 30, an inner surface 31 of the second extension.

Detailed Description

In order that the invention may be readily understood, a more particular description thereof will be rendered by reference to specific embodiments that are illustrated in the appended drawings. It will be understood that when an element is referred to as being "fixed" to another element, it can be directly on the other element or one or more intervening elements may be present therebetween. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or one or more intervening elements may be present therebetween. The terms "upper," "lower," "inner," "outer," "vertical," "horizontal," and the like as used in this specification, refer to an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not denote or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Unless otherwise defined, features such as "parallel", "perpendicular" and "identical" as used in the embodiments of the present invention include cases where "parallel", "perpendicular", "identical" and the like are in strict sense, and cases where "substantially parallel", "substantially perpendicular", "substantially identical" and the like include certain errors. For example, the above-described "approximately" may indicate that the difference of the compared objects is within 10%, or 5%, of the average value of the compared objects. Where no number of a component or element is specifically indicated below in the context of embodiments of the present invention, it is intended that the component or element may be one or more or it may be understood that at least one. "at least one" means one or more, and "a plurality" means at least two.

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. The term "and/or" as used in this specification includes any and all combinations of one or more of the associated listed items.

In addition, the technical features mentioned in the different embodiments of the invention described below can be combined with one another as long as they do not conflict with one another. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present invention fall within the protection scope of the present invention.

The application discloses a photovoltaic greenhouse, as shown in fig. 1, including support 100, be fixed in the ceiling 200 on the support 100, the first domatic of ceiling 200 is equipped with photovoltaic module 300, and the second domatic covers has transparent film 400, can utilize photovoltaic module 300 to generate electricity like this, satisfies the required illumination of crop growth through transparent film 400 printing opacity simultaneously, realizes that the farming light is complementary. The photovoltaic module 300 comprises a plurality of photovoltaic panels 301 distributed in an array, and a photovoltaic rainproof device 500 is arranged at the joint between two adjacent photovoltaic panels 301.

As shown in fig. 1, the second slope is provided with a plurality of supporting beams 401 for supporting the transparent film 400, the supporting beams 401 are arranged in an arch shape, and the shearing stress borne by the supporting beams 401 is dispersed into positive stress along the axial direction due to the arch structure, so that the compressive capacity of the second slope is increased, and the structural stability of the greenhouse is improved. Simultaneously, upwards hold up transparent film 400 through supporting beam 401 for the whole arch that is of second domatic, when the rainwater falls on the second domatic, can in time discharge along the domatic of arch, avoid transparent film 400 to catch the rainwater and break.

In an embodiment of the present application, as shown in fig. 2 and 3, the photovoltaic rainproof device 500 includes a body 1, a top plate 2 disposed at the top end of the body 1, and a bottom plate 3 disposed at the bottom end of the body 1. The body 1 is strip-shaped, and has a width matched with a gap width between two adjacent photovoltaic panels 301, and a height corresponding to a thickness of the photovoltaic panels 301. The body 1 includes top and the bottom opposite with the top, and roof 2 and the top fixed connection of body 1, bottom plate 3 and the bottom fixed connection of body 1. When the photovoltaic panels 301 are installed, the body 1 is filled in the joint between two adjacent photovoltaic panels 301, the top plate 2 covers the edges of the two sides of the joint on the photosurface of the photovoltaic panels 301, and the bottom plate 52 covers the edges of the two sides of the joint on the backlight surface of the photovoltaic panels 301.

In this way, the joints of the photovoltaic panel 301 are filled by the body 1, and the effect of sealing the joints is achieved. The top plate 2 and the bottom plate 3 limit the body 1 from separating from the photosensitive surface or the backlight surface in the thickness direction of the photovoltaic panel 301, and play a role in preventing separation. Meanwhile, the top plate 2 and the bottom plate 3 respectively cover edges of the photosurface and the backlight surface of the photovoltaic panel 301 at two sides of the joint, further play a role in waterproof sealing of the joint, and prevent rainwater from penetrating into the joint between the top plate 2 and the photosurface of the photovoltaic panel 301.

In this embodiment, a side surface of the top plate 2 facing away from the bottom plate 3 is an arc surface, that is, a side surface of the top plate 2 located on the light sensing surface of the photovoltaic panel 30 is an arc surface, that is, an outer surface of the top plate 2 is an arc surface.

With such a structure, the rainwater falling onto the top plate 2 is directed to both sides of the top plate 2 along the direction of the flow velocity when the arc surface slides down, so that the rainwater is guided to both sides of the body 1 by the upper surface of the top plate 2, and the rainwater is prevented from penetrating into the joint of the top plate 2 and the photovoltaic panel 301 by changing the water flow direction.

In order to reserve a deformation space for thermal expansion and contraction of the photovoltaic panel 301, in this embodiment, the body 1 is an elastic member, such as a rubber member, or a silicone member.

As shown in fig. 2 and 3, in order to further increase the elastic deformability of the body 1, a cavity 10 for forming an air pocket is provided inside the body 1, and the cavity 10 extends along the length direction of the body 1. When the photovoltaic panels 301 on two sides of the seam are expanded by heating, the width of the seam is reduced, and the air bags in the body 1 are extruded to generate elastic deformation to reduce the width of the air bags, so that the avoidance space required by the expansion of the photovoltaic panels 301 is provided. Meanwhile, as the air bag is pressed, the body 1 is tightly attached to the photovoltaic panels 301 at two sides of the joint in the deformation process, so that the sealing waterproof capability between the body 1 and the joint is ensured not to be influenced by thermal expansion and cold contraction of the photovoltaic panels 301.

As shown in fig. 2 and 3, sealing strips 11 are further arranged on two sides of the body 1, the sealing strips 11 protrude out of the side surface of the body 1 by a certain size, and the sealing strips 11 are distributed at intervals along the height direction (the thickness direction of the photovoltaic panel) of the body 1.

Through set up sealing strip 11 in the side of body 1, increase the roughness of body 1 side to this increases the coefficient of friction of body 1 and seam both sides terminal surface, thereby increases the frictional force between body 1 and the photovoltaic board 301, makes the more firm of being connected between body 1 and the photovoltaic board 301, and promotes the sealed waterproof performance that the seam goes out.

In this embodiment, the body 1, the top plate 2 and the bottom plate 3 are integrally formed, and are integrally made of elastic materials, so that the body 1, the top plate 2 and the bottom plate 3 all have elastic deformation capability. Thus, the sealing performance is ensured, and the photovoltaic rainproof device 500 has elastic deformation capability, so that looseness caused by long-term use is avoided.

In yet another embodiment of the present application, as shown in fig. 4 and 5, the top plate 2 includes a first extending edge 20 extending to two sides of the body 1, and the first extending edge 20 includes a root fixedly connected to the body 1, and an end 201 extending from the root to two sides of the body 1. The end 201 of the first extending edge 20 is inclined towards the bottom plate 3, so that an included angle a is formed between a connecting line between the end 201 of the first extending edge 20 and the root and the side surface of the body 1, and the included angle is between 60 and 80 degrees.

With such a structure, when the photovoltaic rainproof device 500 is installed at the joint between two adjacent photovoltaic panels 301, the first extension edge 20 is elastically deformed under the pressure between the photovoltaic panels 301, so that the first extension edge 20 is parallel to the light sensing surface of the photovoltaic panel 30. The elasticity that this elastic deformation produced has increased the positive pressure on first extension limit 20 and photovoltaic board 301 surface for first extension limit 20 is inseparabler with the laminating of photovoltaic board 301 surface, makes the rainwater unable to get into the region that first extension limit 20 covered, avoids in the rainwater infiltration seam, promotes waterproof sealing effect.

In a further embodiment of the present application, as shown in fig. 6, the bottom plate 3 is symmetrical in structure with the top plate 2 with respect to the body 1. Specifically, the bottom plate 3 includes second extending sides 30 extending to both sides of the body 1, the second extending sides 30 including a root fixedly connected to the body 1, and end portions 301 extending from the root to both sides of the body 1. The end 301 of the second extension edge 30 is inclined towards the top plate 2, so that a connecting line between the end 301 of the second extension edge 30 and the root forms an included angle between 60 and 80 degrees relative to the side surface of the body 1.

By adopting such structural design, when the photovoltaic rainproof device 500 is installed at the joint between two adjacent photovoltaic panels 301, the first extending edge 20 and the second extending edge 30 are simultaneously elastically deformed, and the elastic deformation is shared to the first extending edge 20 and the second extending edge 30 under the condition of not increasing the elastic force, so that the elastic deformation of the first extending edge 20 is greatly reduced, the requirement on the elastic capability of materials is reduced, the aging of products is delayed, and the service life is prolonged.

In a further embodiment of the present application, as shown in fig. 7, a side surface of the first extension 20 facing the bottom plate 3 is arched, which arch is curved in a direction away from the bottom plate 3, i.e. an inner surface 21 of the first extension 20 is arched. When the photovoltaic rainproof device 500 is installed at the joint, the arch structure of the inner surface 21 of the first extension edge 20 is elastically deformed under the combined action of the body 1 and the photovoltaic panel 301, and the arch-shaped cambered surface is changed into a plane attached to the photosensitive surface of the photovoltaic panel 301.

With such a structure, the deformation amount of the first extending edge 20 can be increased without changing the deformation angle between the root of the first extending edge 20 and the body 1, thereby increasing the degree of tightness of the bonding between the top plate 2 and the photovoltaic panel 301 and improving the sealing performance. Meanwhile, the structural stability of the top plate 2 is improved and the service life of the equipment is prolonged by utilizing the mechanical characteristics of the arch structure to disperse pressure.

In yet another embodiment of the present application, as shown in fig. 8, the top plate 2 and the bottom plate 3 are symmetrical with respect to the body 1, and a side surface of the second extending edge 30 facing the top plate 2 is arched, and the arch is curved in a direction away from the bottom plate 3, that is, an inner surface 31 of the second extending edge 30 is arched.

Like this with roof 2 and bottom plate 3 internal surface all set up to the arch, under the circumstances that does not change roof 2 and bottom plate 3 root deformation angle, increased the deformation volume of first extension limit 20 and second extension limit 30, further increased the inseparable degree of laminating between roof 2 and the photovoltaic board 301. Meanwhile, the structural stability of the bottom plate 3 is improved by utilizing the mechanical characteristic of the arch structure for dispersing pressure, and the service life of the equipment is further prolonged.

In the embodiment of the present application, as shown in fig. 1, the photovoltaic rainproof device 500 includes a first waterproof strip 51 distributed in a transverse direction, and a second waterproof strip 52 disposed in a longitudinal direction. The joints between two adjacent photovoltaic panels 301 in the transverse direction are filled with a plurality of first waterproof strips 51, while the joints in the longitudinal direction are filled with the whole second waterproof strip 52, wherein the first waterproof strip 51 is arranged between the two adjacent second waterproof strips 52. In order to ensure the sealing performance, the junction between the first waterproof strip 51 and the second waterproof strip 52 is welded by adopting a hot melting technology, so that the end part of the first waterproof strip 51 and the side surface of the second waterproof strip 52 form an integrated structure.

The photovoltaic greenhouse disclosed by the application is characterized in that the photovoltaic rainproof device adopted between two adjacent photovoltaic plates is sealed and waterproof depending on the structure of the product, the photovoltaic rainproof device can be used for a whole life in single installation, maintenance is not needed, the device is simple in structure, the sealing performance is reliable, the manufacturing cost is low, and the device can be applied to large-scale photovoltaic greenhouses and greatly reduce the equipment production and operation and maintenance cost.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; the technical features of the above embodiments or in the different embodiments may also be combined within the idea of the invention, the steps may be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims (10)

1. A photovoltaic flashing device comprising:

the photovoltaic panel comprises a body, a plurality of photovoltaic panels and a plurality of connecting pieces, wherein the body is used for filling a joint between two adjacent photovoltaic panels and is a strip-shaped elastic piece and comprises a top end and a bottom end opposite to the top end;

the top plate is fixedly connected with the top end of the body, the photovoltaic plates comprise photosurfaces, and the top plate is used for covering edges on two sides of a joint on the photosurfaces of two adjacent photovoltaic plates;

the bottom plate, the bottom plate with the bottom fixed connection of body, the photovoltaic board includes the backlight, the bottom plate is used for covering two adjacent edges of joint both sides on the photovoltaic board backlight.

2. The photovoltaic flashing device of claim 1, wherein the top panel includes a first extending edge extending to both sides of the body, the first extending edge including a root fixedly connected to the body and an end extending from the root to both sides of the body, the end of the first extending edge being inclined to the bottom panel.

3. The photovoltaic flashing device of claim 2, wherein the first extension edge is arched against an inner surface of the base plate, the inner surface of the base plate being curved away from the base plate.

4. A photovoltaic flashing device according to any of claims 1-3, in which the surface of the side of the top plate facing away from the bottom plate is a cambered surface.

5. A photovoltaic flashing device according to any of claims 1-3, in which the top panel is a resilient member having elastic deformation capability.

6. A photovoltaic flashing device according to any of claims 1 to 3, in which the body is a resilient member having elastic deformation capability.

7. The photovoltaic flashing device of claim 6, wherein the body has a cavity therein for forming an air pocket, the cavity extending along the length of the body.

8. A photovoltaic flashing device according to claims 1-3, characterised in that the body is further provided on both sides with sealing strips for abutment with the end faces of the two sides of the joint, the sealing strips protruding beyond the sides of the body.

9. The photovoltaic flashing device of claim 4, wherein the body, top panel and bottom panel are of unitary construction.

10. A photovoltaic greenhouse, comprising:

a bracket;

the ceiling is fixed on the bracket and comprises a first slope surface and a second slope surface, a plurality of supporting beams for supporting the transparent film are distributed on the second slope surface, and the supporting beams are arranged in an arch shape;

the photovoltaic module comprises a plurality of photovoltaic plates arranged on the first slope surface, and the photovoltaic rainproof device as set forth in any one of claims 1-9 is arranged between two adjacent photovoltaic plates.