CN216959808U

CN216959808U - Photovoltaic system, photovoltaic strutting arrangement and photovoltaic cooling subassembly

Info

Publication number: CN216959808U
Application number: CN202220104707.7U
Authority: CN
Inventors: 汤华林
Original assignee: Sungrow Renewables Development Co Ltd
Current assignee: Sungrow Renewables Development Co Ltd
Priority date: 2022-01-14
Filing date: 2022-01-14
Publication date: 2022-07-12
Anticipated expiration: 2032-01-14

Abstract

The utility model discloses a photovoltaic system, a photovoltaic supporting device and a photovoltaic cooling assembly, wherein the photovoltaic cooling assembly comprises: the pipe wall of the exhaust pipe is provided with an exhaust outlet, and the length direction of the exhaust outlet extends along the length direction of the exhaust pipe; and the air outlet of the air injection device is communicated with the inside of the exhaust pipe. Arrange the exhaust pipe in photovoltaic board below, in the wind device pours into the air injection exhaust pipe into with the air, the continuous air that blows off in the exhaust pipe forms the air current below the photovoltaic board from the air exit, and the air current flows in the photovoltaic board below in order to take away the heat of photovoltaic board, dispels the heat to the photovoltaic board, and then prolongs the life-span of photovoltaic board.

Description

Photovoltaic system, photovoltaic strutting arrangement and photovoltaic cooling subassembly

Technical Field

The utility model relates to the technical field of photovoltaic power generation, in particular to a photovoltaic system, a photovoltaic supporting device and a photovoltaic cooling assembly.

Background

The solar radiation energy absorbed by the photovoltaic module is partially converted into electric energy, the rest is converted into heat energy, and heat is also generated in the power generation process of the photovoltaic module, so that the temperature of the photovoltaic module is increased during the working process. The generating efficiency of the photovoltaic module is reduced along with the temperature rise, and the generating capacity loss is about 0.35% when the temperature rises once.

In the prior art, the color steel tile power station component mostly adopts a tiled mode, no additional heat dissipation system is provided, the gap between the bottom of the photovoltaic component and the color steel tile is small, the air flow performance is poor, the temperature rise phenomenon is more remarkable, the annual average temperature rise reaches 30 ℃, the annual generated energy loss reaches 8%, and the service life of a photovoltaic panel can be shortened due to overhigh temperature.

SUMMERY OF THE UTILITY MODEL

In view of the above, a first object of the present invention is to provide a photovoltaic cooling module, which can effectively improve air fluidity to reduce the temperature of a photovoltaic panel, and a second object of the present invention is to provide a photovoltaic support apparatus and a photovoltaic system including the photovoltaic cooling module.

In order to achieve the first object, the utility model provides the following technical scheme:

a photovoltaic cooling assembly, comprising:

the pipe wall of the exhaust pipe is provided with an exhaust outlet, and the length direction of the exhaust outlet extends along the length direction of the exhaust pipe;

and the air outlet of the air injection device is communicated with the inside of the exhaust pipe.

Preferably, in the photovoltaic cooling module, the duct wall of the exhaust duct includes a first exhaust edge and a second exhaust edge which are opposite to each other, an exhaust gap is formed between the first exhaust edge and the second exhaust edge, and the air outlet side of the exhaust gap is the air outlet.

Preferably, in the photovoltaic cooling module, a distance between the first air exhaust edge and the second air exhaust edge gradually decreases and then gradually increases along the air outlet direction, or a distance between the first air exhaust edge and the second air exhaust edge gradually decreases along the air outlet direction.

Preferably, in the photovoltaic cooling module, the wall surfaces of the first air exhaust edge and the second air exhaust edge facing the air exhaust gap are both curved surfaces.

Preferably, in the photovoltaic cooling module, a duct wall of the exhaust duct includes a first wall and a second wall, the first exhaust edge is located at an edge of the first wall, and the second exhaust edge is located at an edge of the second wall;

the first air exhaust edge is positioned on one side of the second air exhaust edge, which is far away from the inner cavity of the air exhaust pipe.

Preferably, in the photovoltaic cooling module, the second wall includes an air guide section, and the air guide section gradually deviates towards the direction of the inner cavity of the exhaust duct along a direction away from the first wall.

The utility model provides a photovoltaic strutting arrangement, includes a supporting beam and as above-mentioned any one photovoltaic cooling subassembly, photovoltaic cooling subassembly's exhaust pipe set up in a supporting beam upside.

Preferably, in the photovoltaic supporting device, the exhaust duct and the supporting beam are of an integral structure, the exhaust duct is welded to the supporting beam, or the exhaust duct is fixedly connected to the supporting beam through a connecting member.

A photovoltaic system comprising a photovoltaic panel and a photovoltaic support apparatus as claimed in any one of the preceding claims, the exhaust duct being located on the underside of the photovoltaic panel.

Preferably, in the photovoltaic system, the photovoltaic system further includes a controller and a temperature detector for detecting the temperature of the photovoltaic panel, an output end of the temperature detector is connected with an input end of the controller, and an output end of the controller is connected with an input end of the wind injection device.

When the photovoltaic cooling assembly provided by the embodiment is applied, the exhaust pipe can be arranged below the photovoltaic panel, the air injection device injects air into the exhaust pipe, the air in the exhaust pipe continuously blows out air from the air outlet to form airflow below the photovoltaic panel, and the airflow flows below the photovoltaic panel to take away heat of the photovoltaic panel, so that the heat of the photovoltaic panel is dissipated, and the service life of the photovoltaic panel is prolonged.

In order to achieve the second object, the utility model further provides a photovoltaic supporting device and a photovoltaic system, wherein the photovoltaic supporting device and the photovoltaic system comprise any one of the photovoltaic cooling assemblies. Because foretell photovoltaic cooling module has above-mentioned technological effect, photovoltaic strutting arrangement and photovoltaic system that have this photovoltaic cooling module also should have corresponding technological effect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural diagram of an exhaust duct and a support beam according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of an exhaust duct according to an embodiment of the present invention;

FIG. 3 is a side view of an exhaust duct and a support beam according to an embodiment of the present invention;

FIG. 4 is a schematic view of a bottom view of an exhaust duct and a support beam according to an embodiment of the present invention;

FIG. 5 is a schematic view of the exhaust duct and the support beam of the embodiment of the present invention cooperating with a photovoltaic panel;

FIG. 6 is a schematic view of a plurality of exhaust ducts and a plurality of photovoltaic panels according to an embodiment of the present invention;

FIG. 7 is a schematic view of a plurality of exhaust ducts and a plurality of photovoltaic panels according to another embodiment of the present invention;

fig. 8 is a schematic view of a photovoltaic system provided by an embodiment of the present invention;

fig. 9 is a schematic view of a photovoltaic system according to another embodiment of the utility model from a bottom view.

In fig. 1-9:

1-exhaust pipe, 11-first wall, 11 a-first exhaust edge, 12-exhaust gap, 13-second wall, 13 a-second exhaust edge, 13 b-transition section, 13 c-air guide section, 14-inner cavity, 2-support beam, 3-photovoltaic panel, 4-color steel tile and 5-air injection device.

Detailed Description

The first purpose of the utility model is to provide a photovoltaic cooling assembly which can effectively improve the air flowability so as to reduce the temperature of a photovoltaic panel, and the second purpose of the utility model is to provide a photovoltaic supporting device and a photovoltaic system comprising the photovoltaic cooling assembly.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", and "right", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for convenience of description and simplification of description, but do not indicate or imply that the positions or elements referred to must have specific orientations, be constructed in specific orientations, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1-9, the photovoltaic cooling module of the present invention includes an exhaust duct and an air injection device 5. Wherein, the air exit has been seted up to the pipe wall of exhaust pipe, and the length direction of air exit extends along the length direction of exhaust pipe. The length of air exit is far greater than the width of air exit, and the length of air exit can be less than the length of exhaust pipe, and the both ends of air exit extend to near the both ends of exhaust pipe or the both ends of air exit extend to the both ends of exhaust pipe.

The air outlet of the air injection device 5 is communicated with the inside of the exhaust pipe. Namely, the air injection device 5 is used for injecting air into the exhaust pipe so as to continuously blow out the air from the exhaust outlet.

When the photovoltaic cooling assembly provided by the embodiment is applied, the exhaust pipe can be arranged below the photovoltaic panel 3, the air injection device 5 injects air into the exhaust pipe, the air in the exhaust pipe continuously blows out air from the air outlet to form airflow below the photovoltaic panel 3, the airflow flows below the photovoltaic panel 3 to take away heat of the photovoltaic panel 3, the heat of the photovoltaic panel 3 is dissipated, and the service life of the photovoltaic panel 3 is prolonged.

In a specific embodiment, the duct wall of the exhaust duct includes a first exhaust side 11a and a second exhaust side 13a opposite to each other, an exhaust gap 12 is formed between the first exhaust side 11a and the second exhaust side 13a, and an exhaust outlet is formed on the exhaust side of the exhaust gap 12. Specifically, the first discharge edge 11a and the second discharge edge 13a are disposed opposite to each other, and the air in the discharge duct is discharged through the discharge gap 12 between the first discharge edge 11a and the second discharge edge 13 a. With the arrangement, the air in the exhaust pipe enters the exhaust gap 12 and then moves along the exhaust gap 12, and the air in the exhaust gap 12 can be uniformly blown out.

Further, in the above embodiment, the distance between the first discharge edge 11a and the second discharge edge 13a gradually decreases and then gradually increases along the air outlet direction, and specifically, the ventilation area of the discharge gap 12 gradually decreases and then gradually increases along the air outlet direction. Alternatively, the distance between the first discharge edge 11a and the second discharge edge 13a gradually decreases along the air outlet direction, and specifically, the ventilation area of the discharge gap 12 gradually decreases along the air outlet direction. With the arrangement, the position with the minimum distance between the first air exhaust side 11a and the second air exhaust side 13a has the fastest air speed and the minimum pressure, so that more air in the air exhaust pipe enters the air exhaust gap 12 to form a Venturi effect.

Of course, the ventilation area of the discharge air gap 12 may be constant along the discharge air direction, and is not limited herein.

In order to reduce wind resistance, the wall surfaces of the first discharge edge 11a and the second discharge edge 13a facing the discharge gap 12 are both curved surfaces, and the air entering the discharge gap 12 flows along the curved surfaces and is finally blown out. Of course, the wall surfaces of the first discharge edge 11a and the second discharge edge 13a facing the discharge gap 12 may be flat surfaces, and are not limited thereto.

In another embodiment, the wall of the exhaust duct includes a first wall 11 and a second wall 13, the first exhaust edge 11a is located at the edge of the first wall 11, and the second exhaust edge 13a is located at the edge of the second wall 13. The length direction of the first wall 11 and the second wall 13 is along the length direction of the exhaust duct. The first discharge edge 11a is located on one side of the second discharge edge 13a away from the discharge duct inner cavity 14, that is, the first discharge edge 11a and the second discharge edge 13a are sequentially arranged along the direction away from the discharge duct inner cavity 14. In this arrangement, the air in the discharge gap 12 is blown out and flows at least partially along the second wall 13, and the second wall 13 has a guiding effect on the airflow.

In the above embodiment, the second wall 13 includes the air guiding section 13c, and the air guiding section 13c is gradually shifted toward the exhaust duct inner cavity 14 in a direction away from the first wall 11. With such an arrangement, when the second wall 13 of the exhaust duct is located below the photovoltaic panel 3, the air guiding section 13c and the lower side of the photovoltaic panel 3 together form an air flow channel, and the air guiding section 13c gradually deviates towards the direction of the inner cavity 14 of the exhaust duct along the direction away from the first wall 11, so that the air flow channel gradually expands, and the air flow speed gradually decreases.

Optionally, the second wall 13 includes a second discharge edge 13a, a transition section 13b and a wind guide section 13c sequentially arranged along a direction away from the first wall 11. The transition section 13b may extend along a curved surface, and the transition section 13b smoothly and transitionally connects the second discharge edge 13a and the air guiding section 13 c.

Of course, the first discharge edge 11a and the second discharge edge 13a may not be arranged in sequence along the direction away from the inner cavity 14, and are not limited herein.

In addition, the first discharge edge 11a and the second discharge edge 13a may not be provided, and only the pipe wall of the cylindrical discharge pipe may be provided with a through hole as a discharge port, which is not limited herein.

In this embodiment, the air injection device 5 may be an air compressor or a fan, and specifically, an appropriate air injection device 5 may be selected according to actual conditions.

The both ends of exhaust pipe can all set up the air intake, so can annotate the air outlet of wind device 5 with two respectively with the air intake intercommunication at the both ends of exhaust pipe, two wind devices 5 of annotating supply the air for the exhaust pipe simultaneously to guarantee that the air is constantly discharged from the exhaust pipe, and the air-out at exhaust pipe both ends is more even.

The two ends of the exhaust pipe can be opened to be used as air inlets, of course, the two ends of the exhaust pipe can be blocked, and the air inlets are arranged at the positions, close to the end parts, of the pipe wall of the exhaust pipe, and the air inlets are not limited herein.

As shown in fig. 1 to 4, based on the photovoltaic cooling module provided in the above embodiment, the utility model further provides a photovoltaic supporting device, which includes a supporting beam 2 and any one of the photovoltaic cooling modules provided in the above embodiments, and an exhaust duct of the photovoltaic cooling module is disposed on an upper side of the supporting beam 2. Because this photovoltaic strutting arrangement has adopted the photovoltaic cooling subassembly in above-mentioned embodiment, please refer to above-mentioned embodiment for this photovoltaic strutting arrangement's beneficial effect. So set up, photovoltaic board 3's frame can with exhaust pipe fixed connection, support beam 2 and exhaust pipe support photovoltaic board 3 jointly. It should be noted that there may be a gap between the photovoltaic panel 3 and the exhaust duct to prevent obstruction of the airflow.

Preferably, the exhaust pipe and the support beam 2 may be an integral structure, or the exhaust pipe and the support beam 2 are welded, or the exhaust pipe and the support beam 2 are fixedly connected through a connecting member. The connecting piece can be a screw thread piece, a hook and the like.

The cross section of the support beam 2 may be U-shaped or other shapes, and is not limited herein.

Above-mentioned photovoltaic strutting arrangement can also include various steel tile 4, and a supporting beam 2 sets up on various steel tile 4 to lay photovoltaic board 3 on various steel tile 4. Of course, the support beam 2 may be installed on a hill or other place, and is not limited thereto.

As shown in fig. 6 to 9, the present invention also provides a photovoltaic system comprising a photovoltaic panel 3 and a photovoltaic support device as described in any of the above embodiments, with an exhaust duct located on the underside of the photovoltaic panel 3.

In a specific embodiment, the wall of the exhaust duct includes a first wall 11 and a second wall 13, the edge of the first wall 11 is a first exhaust edge 11a, the edge of the second wall 13 is a second exhaust edge 13a, the first exhaust edge 11a and the second exhaust edge 13a are opposite to each other and form an exhaust gap 12 therebetween, the second wall 13 includes an air guiding section 13c, and the air guiding section 13c gradually shifts towards the direction of the inner cavity 14 of the exhaust duct along a direction away from the first wall 11.

As shown in fig. 6, the air guiding section 13c may be located at one side of the exhaust duct close to the photovoltaic panel 3, an airflow channel is formed between the air guiding section 13c and the photovoltaic panel 3, and a plurality of exhaust ducts may be sequentially arranged at the lower side of the photovoltaic panel 3 to uniformly dissipate heat from the photovoltaic panel 3.

Alternatively, as shown in fig. 7, an airflow passage is formed between the air guiding sections 13c of the two exhaust ducts. Specifically, the two exhaust ducts are distributed up and down, and the air guiding sections 13c of the two exhaust ducts are opposed to form an air flow passage, so that the air flows discharged from the two exhaust ducts together radiate heat to the photovoltaic panel 3.

In order to adjust the wind speed according to the actual situation, the photovoltaic system further comprises a controller and a temperature detector for detecting the temperature of the photovoltaic panel 3, the output end of the temperature detector is connected with the input end of the controller, and the output end of the controller is connected with the input end of the wind injection device 5. Specifically, the controller adjusts the wind speed of the wind injection device 5 according to the temperature of the photovoltaic panel 3 detected by the temperature detector, so that the photovoltaic panel 3 is kept within a preset temperature range.

When the temperature of the photovoltaic panel 3 is higher than the preset temperature range, the wind speed of the wind injection device 5 is increased to cool the photovoltaic panel 3. When the temperature of the photovoltaic panel 3 is lower than the preset temperature range, the wind speed of the wind injection device 5 is reduced.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Claims

1. A photovoltaic cooling module, its characterized in that includes:

the air exhaust pipe comprises an air exhaust pipe (1), wherein an air exhaust opening is formed in the pipe wall of the air exhaust pipe (1), and the length direction of the air exhaust opening extends along the length direction of the air exhaust pipe (1);

and the air outlet of the air injection device (5) is communicated with the inside of the exhaust pipe (1).

2. The PV cooling module according to claim 1, wherein the duct wall of the exhaust duct (1) includes a first exhaust edge (11a) and a second exhaust edge (13a) opposite to each other, an exhaust gap (12) is formed between the first exhaust edge (11a) and the second exhaust edge (13a), and the exhaust side of the exhaust gap (12) is the exhaust outlet.

3. The photovoltaic cooling module according to claim 2, wherein the distance between the first air discharge edge (11a) and the second air discharge edge (13a) gradually decreases and then gradually increases along the air outlet direction, or the distance between the first air discharge edge (11a) and the second air discharge edge (13a) gradually decreases along the air outlet direction.

4. The photovoltaic cooling module according to claim 2, wherein the wall surfaces of the first air discharge edge (11a) and the second air discharge edge (13a) facing the air discharge gap (12) are curved.

5. Photovoltaic cooling module according to any of claims 2-4, wherein the duct wall of the exhaust duct (1) comprises a first wall (11) and a second wall (13), the first exhaust edge (11a) being located at the edge of the first wall (11) and the second exhaust edge (13a) being located at the edge of the second wall (13);

the first air exhaust edge (11a) is positioned on one side of the second air exhaust edge (13a) which is far away from the inner cavity (14) of the exhaust duct (1).

6. Photovoltaic cooling module according to claim 5, wherein the second wall (13) comprises a wind guiding section (13c), and the wind guiding section (13c) is gradually shifted towards the inner cavity (14) of the exhaust duct (1) along a direction away from the first wall (11).

7. A photovoltaic support device, characterized in that it comprises a support beam (2) and a photovoltaic cooling module according to any one of claims 1-6, the exhaust duct (1) of the photovoltaic cooling module being arranged on the upper side of the support beam (2).

8. The photovoltaic supporting device as claimed in claim 7, wherein the exhaust duct (1) and the supporting beam (2) are of an integral structure, the exhaust duct (1) and the supporting beam (2) are welded or the exhaust duct (1) and the supporting beam (2) are fixedly connected through a connecting piece.

9. Photovoltaic system, characterized in that it comprises a photovoltaic panel (3) and a photovoltaic support device according to any of claims 7-8, the exhaust duct (1) being located on the lower side of the photovoltaic panel (3).

10. Photovoltaic system according to claim 9, characterized in that it further comprises a controller and a temperature detector for detecting the temperature of the photovoltaic panel (3), the output of the temperature detector being connected to the input of the controller, the output of the controller being connected to the input of the wind injection device (5).