CN220368689U

CN220368689U - Shading prevention component and photovoltaic power generation system

Info

Publication number: CN220368689U
Application number: CN202321666730.6U
Authority: CN
Inventors: 吉宏选; 时晓蕾; 武文杰; 束洋
Original assignee: Hefei Zero Carbon Technology Co ltd
Current assignee: Hefei Zero Carbon Technology Co ltd
Priority date: 2023-06-27
Filing date: 2023-06-27
Publication date: 2024-01-19
Anticipated expiration: 2033-06-27

Abstract

The utility model provides an anti-shading component and a photovoltaic power generation system. The shading prevention assembly includes: a reflecting mirror; and an adjusting bracket, the adjusting bracket comprising a first connecting arm and a first driving unit, the first connecting arm comprising a first connecting arm and a second connecting arm, one end of the first connecting arm being pivotally connected to the mirror, the other end of the first connecting arm being pivotally connected to the second connecting arm, the first driving unit being configured to be able to drive the mirror to rotate about a first pivot axis, to drive the first connecting arm to rotate about a second pivot axis, the first pivot axis being arranged at an angle to the second pivot axis. The anti-shading component of the technical scheme can solve the problem that the power generation efficiency of the middle-high voltage photovoltaic power generation system is low due to the fact that the number of lightning rods is large and the shading of an illumination area is large in the existing middle-high voltage photovoltaic power generation system.

Description

Shading prevention component and photovoltaic power generation system

Technical Field

The utility model relates to the technical field of photovoltaic devices, in particular to a shading prevention component and a photovoltaic power generation system.

Background

In the past, photovoltaic power generation has been mainly applied to space power generation and small commodity application technologies, such as calculators. After 2000 years, photovoltaic power generation has also begun to move toward grid-connected and off-grid photovoltaic power generation applications, such as large commercial power stations and building-integrated photovoltaic systems. The solar photovoltaic power generation system generally comprises a photovoltaic module, an inverter, a photovoltaic fixing system such as a bracket and the like. The existing medium-high voltage photovoltaic power generation system can solve the problems that a traditional photovoltaic power generation system is large and heavy, the system efficiency is low, the system efficiency is difficult to improve and the like, but the voltage of the medium-high voltage photovoltaic power generation system is higher, the number of required lightning rods is larger, the larger the number of the lightning rods is, the larger the area of the lightning rods for shielding illumination is, and the lower the power generation efficiency of the medium-high voltage photovoltaic power generation system is caused.

Disclosure of Invention

The utility model mainly aims to provide an anti-shading component and a photovoltaic power generation system, which can solve the problem that the power generation efficiency of the conventional medium-high voltage photovoltaic power generation system is lower because of the large number of lightning rods and large shading of an illumination area.

In order to achieve the above object, according to an aspect of the present utility model, there is provided a light shielding assembly comprising: a reflecting mirror; the adjusting support comprises a first connecting arm and a first driving unit, the first connecting arm comprises a first connecting support arm and a second connecting support arm, one end of the first connecting support arm is in pivot connection with the reflecting mirror, the other end of the first connecting support arm is in pivot connection with the second connecting support arm, the first driving unit is configured to drive the reflecting mirror to rotate around a first pivot axis and drive the first connecting support arm to rotate around a second pivot axis, and the first pivot axis and the second pivot axis are arranged in an included angle.

Further, the number of the first connecting arms and the number of the reflectors are two, one end of each of the two first connecting arms is provided with one reflector, the adjusting bracket further comprises a second connecting arm, the second connecting arm is connected between the two second connecting arms, and the second connecting arms are configured to drive the two second connecting arms to rotate in a direction approaching to or separating from each other.

Further, the adjusting bracket further comprises a fixing seat, a first connecting protrusion is arranged on the fixing seat, and one end, far away from the first connecting support arm, of the second connecting support arm is pivotally connected with the first connecting protrusion.

Further, the fixing seat is also provided with a mounting hole.

Further, the adjusting bracket further comprises a second driving unit, the second connecting arm comprises a third connecting support arm and a fourth connecting support arm, one ends of the third connecting support arm and the fourth connecting support arm are both in pivot connection with the driving end of the second driving unit, the other ends of the third connecting support arm and the fourth connecting support arm are both in pivot connection with the second connecting support arm located on the side where the third connecting support arm and the fourth connecting support arm are located, and the driving end of the second driving unit is configured to be capable of stretching and contracting for a preset length.

Further, the top and the bottom of the second connecting support arm are both provided with second connecting protrusions, the driving end of the second driving unit comprises a connecting column, one end of the third connecting support arm is pivotally connected with the top of the connecting column, the other end of the third connecting support arm is pivotally connected with the second connecting protrusions located at the top of the second connecting support arm, one end of the fourth connecting support arm is pivotally connected with the bottom of the connecting column, and the other end of the fourth connecting support arm is pivotally connected with the second connecting protrusions located at the bottom of the second connecting support arm.

Further, the first driving unit includes a first driving member mounted on the first connection arm, a driving end of the first driving member is pivotally connected to the mirror, and the driving end of the first driving member is configured to be telescopic by a preset length.

Further, the first driving unit further comprises a second driving piece, the second driving piece is arranged on the second connecting support arm, and the driving end of the second driving piece is in driving connection with the first connecting support arm so as to drive the first connecting support arm to rotate around the second pivot axis relative to the second connecting support arm.

Further, the reflecting mirror is a plane mirror or a curved mirror.

Further, the shading prevention component further comprises a control unit, and the first driving unit is in communication connection with the control unit.

According to another aspect of the present utility model, there is provided a photovoltaic power generation system including: a photovoltaic module; the mounting bracket is provided with a lightning rod; a control unit; and the shading prevention assembly is characterized in that the adjusting bracket is arranged on the mounting bracket and/or the lightning rod, and the control unit is configured to control each reflector to face the shadow area formed on the photovoltaic assembly by the mounting bracket and/or the lightning rod.

Further, the number of the adjusting brackets is multiple, the adjusting brackets are arranged at intervals along the length extending direction of the mounting bracket and/or the lightning rod, and the reflecting mirrors are arranged on the adjusting brackets.

According to another aspect of the present utility model, there is provided a photovoltaic power generation system including: a photovoltaic module; the mounting bracket is provided with a lightning rod; and the anti-shading component is arranged on the mounting bracket and/or the lightning rod.

By applying the technical scheme, the reflector and the adjusting bracket are arranged, the reflector is arranged on the adjusting bracket, the adjusting bracket can be arranged on the mounting bracket and/or the lightning rod of the medium-high voltage photovoltaic power generation system, the first driving unit drives the reflector to rotate around the first pivot axis, meanwhile, the first driving unit can also drive the first connecting arm to rotate around the second pivot axis relative to the second connecting arm, further, the fine adjustment of the deflection angles of the reflector in different directions is realized, the reflector is positioned at a proper reflection angle, the solar energy reflected by the reflector can always illuminate the shadow area formed by the lightning rod and/or the mounting bracket on the photovoltaic module, and the power generation efficiency of the medium-high voltage photovoltaic power generation system is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 shows a schematic structural diagram of a photovoltaic power generation system of an embodiment of the present utility model;

FIG. 2 shows another angular schematic diagram of a photovoltaic power generation system of an embodiment of the present utility model;

FIG. 3 shows a schematic structural view of a shading assembly according to an embodiment of the present utility model;

FIG. 4 illustrates another angular schematic view of an anti-shade assembly of an embodiment of the present utility model; and

fig. 5 shows a schematic view of another angle of the shading assembly according to an embodiment of the present utility model.

Wherein the above figures include the following reference numerals:

10. a control unit; 20. a reflecting mirror; 30. adjusting the bracket; 31. a first connecting arm; 311. a first connecting arm; 312. a second connecting arm; 313. a second connection protrusion; 32. a first driving unit; 321. a first driving member; 322. a second driving member; 33. a second connecting arm; 331. a third connecting arm; 332. a fourth connecting arm; 34. a fixing seat; 341. a first connection protrusion; 342. a mounting hole; 35. a second driving unit; 351. a connecting column; 40. a mounting bracket; 50. a lightning rod; 60. a photovoltaic module.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

Referring now to fig. 1 to 5 in combination, the present utility model provides a shading prevention assembly comprising: a reflecting mirror 20; and an adjusting bracket 30, the adjusting bracket 30 includes a first connecting arm 31 and a first driving unit 32, the first connecting arm 31 includes a first connecting arm 311 and a second connecting arm 312, one end of the first connecting arm 311 is pivotally connected with the mirror 20, the other end of the first connecting arm 311 is pivotally connected with the second connecting arm 312, the first driving unit 32 is configured to be capable of driving the mirror 20 to rotate about a first pivot axis and driving the first connecting arm 311 to rotate about a second pivot axis, and the first pivot axis is disposed at an angle with the second pivot axis.

In the present embodiment, the angle between the reflector 20 and the upper surface of the first connecting arm 311 is α, and the angle between the first connecting arm 311 and the second connecting arm 312 is β. The anti-shading assembly comprises a reflector 20 and an adjusting bracket 30, wherein the reflector 20 is mounted on the adjusting bracket 30, and the adjusting bracket 30 can be mounted on a mounting bracket 40 and/or a lightning rod 50 of the medium-high voltage photovoltaic power generation system. The first driving unit 32 drives the mirror 20 to rotate around the first pivot axis to adjust the angle α, and at the same time, the first driving unit 32 can also drive the first connecting arm 31 to rotate around the second pivot axis relative to the second connecting arm 312 to adjust the angle β. The first pivot axis and the second pivot axis form an included angle, and the size of the included angle can be set according to actual application scenes. Through the arrangement, the deflection angles of the reflecting mirror 20 can be finely adjusted in different directions, so that the reflecting mirror 20 is positioned at a proper reflection angle, and further, the solar light reflected by the reflecting mirror 20 can always illuminate a shadow area formed by the lightning rod 50 and/or the mounting bracket 40 on the photovoltaic module 60, thereby improving the power generation efficiency of the medium-high voltage photovoltaic power generation system.

Referring to fig. 3 to 5 in combination, in one embodiment of the present utility model, the number of the first connecting arms 31 and the number of the reflecting mirrors 20 are two, one reflecting mirror 20 is provided at each end of the two first connecting arms 31, and the adjusting bracket 30 further includes a second connecting arm 33, the second connecting arm 33 being connected between the two second connecting arms 312, the second connecting arm 33 being configured to be capable of driving the two second connecting arms 312 to rotate in a direction approaching or separating from each other.

In this embodiment, the angle between the two second connecting arms 312 is δ. The adjusting bracket 30 comprises two first connecting arms 31 and a second connecting arm 33, and each first connecting arm 31 is provided with a reflecting mirror 20 for reflecting sunlight. One end of the second connecting arm 33 is connected to one of the two second connecting arms 312, the other end of the second connecting arm 33 is connected to the other of the two second connecting arms 312, and the two second connecting arms 312 can be rotated in a direction approaching or separating from each other by the driving of the second connecting arm 33 to adjust the included angle δ. Through the arrangement, coarse adjustment of deflection angles of the two reflectors 20 can be achieved, adjustment of relative positions of the two reflectors 20 can be achieved, the reflectors 20 are located at proper reflection angles, and then solar light reflected by the reflectors 20 can always illuminate a shadow area formed by the lightning rod 50 and/or the mounting bracket 40 on the photovoltaic module 60, so that the power generation efficiency of the medium-high voltage photovoltaic power generation system is improved.

Referring to fig. 3 to 5 in combination, in one embodiment of the present utility model, the adjusting bracket 30 further includes a fixing base 34, a first connecting protrusion 341 is disposed on the fixing base 34, and an end of the second connecting arm 312 remote from the first connecting arm 311 is pivotally connected to the first connecting protrusion 341.

In this embodiment, one end of the second connecting arm 312 is pivotally connected to the first connecting arm 311, the other end of the second connecting arm 312 is pivotally connected to the first connecting protrusion 341, and the second connecting arm 312 can rotate relative to the fixed seat 34 under the driving of the second connecting arm 33.

As shown in fig. 3, in an embodiment of the present utility model, the fixing base 34 is further provided with a mounting hole 342.

In the present embodiment, the fixing base 34 is sleeved on the mounting bracket 40 and/or the lightning rod 50, and the inner wall surface of the mounting hole 342 is configured to be capable of being matched with the mounting bracket 40 and/or the lightning rod 50 of the photovoltaic power generation system, so that the adjusting bracket 30 can be fixedly mounted on the mounting bracket 40 and/or the lightning rod 50.

Referring to fig. 3 to 5 in combination, in one embodiment of the present utility model, the adjusting bracket 30 further includes a second driving unit 35, the second connecting arm 33 includes a third connecting arm 331 and a fourth connecting arm 332, one ends of the third connecting arm 331 and the fourth connecting arm 332 are pivotally connected to the driving end of the second driving unit 35, the other ends of the third connecting arm 331 and the fourth connecting arm 332 are pivotally connected to the second connecting arm 312 at the side thereof, and the driving end of the second driving unit 35 is configured to be telescopic by a predetermined length.

In this embodiment, the driving end of the second driving unit 35 is telescopic, when the driving end of the second driving unit 35 is extended, the third connecting arm 331 is pushed to rotate anticlockwise, and the fourth connecting arm 332 is pushed to rotate clockwise, so that the third connecting arm 331 pushes the second connecting arm 312 connected thereto to rotate anticlockwise, the fourth connecting arm 332 pushes the second connecting arm 312 connected thereto to rotate clockwise, and at this time, the included angle δ between the two second connecting arms 312 is increased. Similarly, when the driving end of the second driving unit 35 is retracted, the third connecting arm 331 can be pulled to rotate clockwise, and the fourth connecting arm 332 is pulled to rotate counterclockwise, so that the third connecting arm 331 pulls the second connecting arm 312 connected thereto to rotate clockwise, and the fourth connecting arm 332 pulls the second connecting arm 312 connected thereto to rotate counterclockwise, at this time, the included angle δ between the two second connecting arms 312 is reduced. By the above arrangement, the adjustment of the angle δ between the two second connecting arms 312 can be achieved, thereby adjusting the deflection angle of the two mirrors 20 and the relative position between the two mirrors 20.

As shown in fig. 3, in one embodiment of the present utility model, the top and bottom of the second connection arm 312 are provided with the second connection protrusion 313, the driving end of the second driving unit 35 includes the connection post 351, one end of the third connection arm 331 is pivotally connected to the top of the connection post 351, the other end of the third connection arm 331 is pivotally connected to the second connection protrusion 313 located at the top of the second connection arm 312, one end of the fourth connection arm 332 is pivotally connected to the bottom of the connection post 351, and the other end of the fourth connection arm 332 is pivotally connected to the second connection protrusion 313 located at the bottom of the second connection arm 312.

Through the above arrangement, the third connecting arm 331 and the fourth connecting arm 332 can be prevented from interfering with each other during rotation, and thus stability of the adjusting bracket 30 during adjustment can be ensured.

Referring to fig. 3 to 5 in combination, in one embodiment of the present utility model, the first driving unit 32 includes a first driving member 321, the first driving member 321 is mounted on the first connection arm 311, a driving end of the first driving member 321 is pivotally connected to the mirror 20, and the driving end of the first driving member 321 is configured to be telescopic by a preset length.

In this embodiment, the first driving member 321 is retractable, and when the first driving member 321 is extended or retracted, the mirror 20 can be pushed or pulled to rotate counterclockwise or clockwise around the first pivot axis, so as to adjust the included angle α.

Referring to fig. 3 to 5 in combination, in one embodiment of the present utility model, the first driving unit 32 further includes a second driving member 322, where the second driving member 322 is disposed on the second connecting arm 312, and the driving end of the second driving member 322 is drivingly connected to the first connecting arm 311 to drive the first connecting arm 311 to rotate about the second pivot axis relative to the second connecting arm 312.

In the present embodiment, the driving end of the second driving member 322 rotates to drive the first connecting arm 311 to rotate about the second pivot axis relative to the second connecting arm 312, so as to adjust the included angle β.

In an embodiment of the present utility model, the first driving member 321, the second driving member 322, and the second driving unit 35 may be a motor, a cylinder, or an oil cylinder.

In one embodiment of the present utility model, the mirror 20 is a flat mirror or a curved mirror.

It should be noted that, in the embodiment of the present utility model, the reflecting mirrors 20 may be circular, rectangular or irregularly shaped, and the number and size of the reflecting mirrors 20 may be set according to the area of the shadow area formed on the photovoltaic module 60 by the bracket and/or the lightning rod 50. The mirror 20 may be monolithic or composed of a plurality of pieces.

Referring to fig. 1 and 2 in combination, the present utility model further provides a photovoltaic power generation system, including: a photovoltaic module 60; the lightning rod comprises a mounting bracket 40, wherein a lightning rod 50 is arranged on the mounting bracket 40; a control unit 10; and the above-mentioned shading prevention assembly, the adjusting bracket 30 is mounted on the mounting bracket 40 and/or the lightning rod 50, and the control unit 10 is configured to control each of the reflecting mirrors 20 toward the shadow area formed on the photovoltaic module 60 by the mounting bracket 40 and/or the lightning rod 50.

In this embodiment, the first driving unit 32 and the second driving unit 35 are both in communication connection with the control unit 10, the control unit 10 can send control signals to the first driving unit 32 and the second driving unit 35 according to the movement of the mounting bracket 40 and/or the shadow area formed on the photovoltaic module 60 by the lightning rod 50, the angle of the reflecting mirror 20 is adjusted in real time through the first driving unit 32 and the second driving unit 35, and the reflecting mirrors 20 are controlled to always face the shadow area, so that the solar light reflected by the reflecting mirror 20 can always illuminate the shadow area, and the power generation efficiency of the photovoltaic power generation system is improved. The anti-shading component of the photovoltaic power generation system has all technical schemes and all technical effects of the anti-shading component, and is not repeated here.

In one embodiment, the number of the adjusting brackets 30 is plural, the adjusting brackets 30 are disposed at intervals along the length extending direction of the mounting bracket 40 and/or the lightning rod 50, and the reflecting mirror 20 is disposed on each adjusting bracket 30.

In the present embodiment, the number of the adjusting brackets 30 and the spacing between two adjacent adjusting brackets 30 can be set according to practical situations.

Referring now to fig. 3-5 in combination, in one embodiment of the present utility model, the anti-shade assembly further comprises a control unit 10, and the first drive unit 32 is communicatively coupled to the control unit 10.

In the present embodiment, the control unit 10 is mounted on the fixing base 34, and the first driving unit 32 and the second driving unit 35 are both in communication connection with the control unit 10. The control unit 10 can send control signals to the first driving unit 32 and the second driving unit 35 according to the movement of the shadow area formed on the photovoltaic module 60 by the mounting bracket 40 and/or the lightning rod 50, the first driving unit 32 and the second driving unit 35 respectively drive the first connecting arm 31 and the second connecting arm 33, the angle of the reflecting mirror 20 is adjusted in real time, the solar light reflected by the reflecting mirror 20 can be ensured to always illuminate the shadow area, and therefore the power generation efficiency of the medium-high voltage photovoltaic power generation system is improved.

Referring now to fig. 1 and 2 in combination, the present utility model also provides a photovoltaic power generation system, a photovoltaic module 60; the lightning rod comprises a mounting bracket 40, wherein a lightning rod 50 is arranged on the mounting bracket 40; and the above-described anti-glare assembly mounted on the mounting bracket 40 and/or the lightning rod 50.

In this embodiment, the anti-shading component of the photovoltaic power generation system has all the technical schemes and all the technical effects of the anti-shading component, and will not be described herein.

As shown in fig. 1, taking a northern hemisphere as an example, sunlight irradiates from north to south, so that the 1 st column to the n th column of the mounting bracket 40 and the lightning rod 50 form a shadow area on the photovoltaic module 60, the mounting bracket 40 and the lightning rod 50 are sequentially provided with a shading prevention assembly from the 2 nd column to the n th column, the sunlight is reflected by the reflecting mirror 20 to illuminate the shadow area formed on the photovoltaic module 60 by the mounting bracket 40 and the lightning rod 50, the shading prevention assembly of the 2 nd column is used for illuminating the shadow area formed on the photovoltaic module 60 by the mounting bracket 40 and the lightning rod 50 of the 1 st column, and the shading prevention assembly of the n th column is used for illuminating the shadow area formed on the photovoltaic module 60 by the n-1 th column of the mounting bracket 40 and the lightning rod 50.

From the above description, it can be seen that the above-described embodiments of the present utility model achieve the following technical effects: the solar energy power generation system comprises a first driving unit, a second driving unit, a first connecting arm, a second connecting arm, a reflector, a regulating support and a solar energy storage device, wherein the reflector and the regulating support are arranged on the regulating support, the regulating support can be arranged on a mounting support and/or a lightning rod of a medium-high voltage photovoltaic power generation system, the first driving unit drives the reflector to rotate around a first pivot axis, meanwhile, the first driving unit can also drive the first connecting arm to rotate around a second pivot axis relative to the second connecting arm, further fine adjustment of deflection angles of the reflector in different directions is achieved, the reflector is positioned at a proper reflection angle, solar energy reflected by the reflector can always illuminate a shadow area formed by the lightning rod and/or the mounting support on a photovoltaic module, and the power generation efficiency of the medium-high voltage photovoltaic power generation system is improved.

It will be apparent that the embodiments described above are merely some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A shading prevention assembly, comprising:

a reflecting mirror (20); and

the adjusting support (30), adjusting support (30) includes first linking arm (31) and first drive unit (32), first linking arm (31) are including first linking arm (311) and second linking arm (312), the one end of first linking arm (311) with speculum (20) pivot connection, the other end of first linking arm (311) with second linking arm (312) pivot connection, first drive unit (32) are constructed and can drive speculum (20) rotate, drive around first pivot axis first linking arm (311) rotate around the second pivot axis, first pivot axis with the second pivot axis is the contained angle setting.

2. The shading prevention assembly according to claim 1, wherein the number of the first connecting arms (31) and the reflecting mirrors (20) is two, one end of each of the two first connecting arms (31) is provided with one reflecting mirror (20), the adjusting bracket (30) further comprises a second connecting arm (33), the second connecting arm (33) is connected between the two second connecting arms (312), and the second connecting arm (33) is configured to drive the two second connecting arms (312) to rotate in a direction approaching or separating from each other.

3. The shading prevention assembly according to claim 2, wherein the adjusting bracket (30) further comprises a fixing base (34), a first connecting protrusion (341) is provided on the fixing base (34), and one end of the second connecting arm (312) far away from the first connecting arm (311) is pivotally connected with the first connecting protrusion (341).

4. A shading prevention assembly according to claim 3, wherein the fixing base (34) is further provided with a mounting hole (342).

5. A shading prevention assembly according to claim 3, wherein the adjusting bracket (30) further comprises a second driving unit (35), the second connecting arm (33) comprises a third connecting arm (331) and a fourth connecting arm (332), one end of the third connecting arm (331) and one end of the fourth connecting arm (332) are pivotally connected with the driving end of the second driving unit (35), the other end of the third connecting arm (331) and the other end of the fourth connecting arm (332) are pivotally connected with the second connecting arm (312) located at the side thereof, and the driving end of the second driving unit (35) is configured to be telescopic by a preset length.

6. The shading prevention assembly according to claim 5, wherein the top and bottom of the second connecting arm (312) are provided with second connecting protrusions (313), the driving end of the second driving unit (35) comprises a connecting post (351), one end of the third connecting arm (331) is pivotally connected to the top of the connecting post (351), the other end of the third connecting arm (331) is pivotally connected to the second connecting protrusion (313) located at the top of the second connecting arm (312), one end of the fourth connecting arm (332) is pivotally connected to the bottom of the connecting post (351), and the other end of the fourth connecting arm (332) is pivotally connected to the second connecting protrusion (313) located at the bottom of the second connecting arm (312).

7. The shading prevention assembly according to any one of claims 1 to 6, wherein the first driving unit (32) comprises a first driving member (321), the first driving member (321) is mounted on the first connection arm (311), a driving end of the first driving member (321) is pivotally connected with the reflecting mirror (20), and the driving end of the first driving member (321) is configured to be telescopic by a preset length.

8. A shading prevention assembly according to any one of claims 1 to 6, wherein the first drive unit (32) further comprises a second drive member (322), the second drive member (322) being arranged on the second connecting arm (312), the drive end of the second drive member (322) being in driving connection with the first connecting arm (311) for driving the first connecting arm (311) to rotate about the second pivot axis relative to the second connecting arm (312).

9. The shading prevention assembly according to any one of claims 1 to 6, wherein the mirror (20) is a flat mirror or a curved mirror.

10. A shading prevention assembly according to claim 1, further comprising a control unit (10), the first drive unit (32) being in communication with the control unit (10).

11. A photovoltaic power generation system, comprising:

a photovoltaic module (60);

the lightning rod (50) is arranged on the mounting bracket (40);

a control unit (10); and

the anti-shade assembly of any one of claims 1 to 9, the adjustment bracket (30) being mounted on the mounting bracket (40) and/or the lightning rod (50), the control unit (10) being configured to control each of the mirrors (20) towards a shadow area formed on the photovoltaic assembly (60) by the mounting bracket (40) and/or the lightning rod (50).

12. The photovoltaic power generation system according to claim 11, wherein the number of the adjusting brackets (30) is plural, the plurality of adjusting brackets (30) are arranged at intervals along the length extension direction of the mounting bracket (40) and/or the lightning rod (50), and the reflecting mirror (20) is arranged on each adjusting bracket (30).

13. A photovoltaic power generation system, comprising:

a photovoltaic module (60);

the lightning rod (50) is arranged on the mounting bracket (40); and

the anti-shade assembly of claim 10 mounted on the mounting bracket (40) and/or the lightning rod (50).