CN214625397U - Photovoltaic module earthing device - Google Patents

Abstract

The utility model discloses a photovoltaic module earthing device, its metal crate that includes a set of photovoltaic module and the photovoltaic support that is used for installing photovoltaic module, install the electrically conductive thorn piece in limit between the metal crate at photovoltaic module both ends and the photovoltaic support, electrically conductive thorn piece in the installation between the metal crate at photovoltaic module middle part and the photovoltaic support, the electrically conductive thorn piece in limit with the one side of well electrically conductive thorn piece has four at least impale respectively the electrically conductive spine of metal crate's protection film, the another side with the photovoltaic support contact. The utility model discloses a conductive spine punctures photovoltaic module metal frame's protection film, realizes that photovoltaic module switches on rather than photovoltaic support's ground connection, satisfies under the prerequisite of lightning protection ground resistance designing requirement, has reduced engineering cost, has saved the construction process, very big improvement subassembly lightning protection ground connection's redundancy, increased the reliability and the security of system's lightning protection.

Description

Photovoltaic module earthing device

Technical Field

The utility model relates to a photovoltaic power plant, especially a photovoltaic module earthing device.

Background

With the rapid development of energy industry in China, the national and social requirements for lightning protection and disaster reduction are higher and higher. For a solar photovoltaic power station in new energy, lightning protection is more important. Therefore, reliable lightning protection technology plays a crucial role in the safety of photovoltaic power stations. The centralized large-scale photovoltaic power station mainly comprises a photovoltaic square matrix, a combiner box, an inverter, a box transformer substation, an alternating-current power distribution cabinet, a power grid access system (boosting, metering equipment and the like), an alternating-current/direct-current cable, a monitoring and communication device, a lightning protection grounding device and the like.

The grounding of a photovoltaic field area of a photovoltaic power station generally utilizes aluminum alloy metal frames around a photovoltaic component of a photovoltaic square matrix as a lightning arrester, and then directly utilizes a photovoltaic support to be connected with a ground screen. In the grounding construction, reliable connection between all metal pieces is guaranteed, namely metal frames of all photovoltaic assemblies of each row of photovoltaic square matrix are required to be mutually and electrically communicated, all the metal frames or clamping pieces are required to be reliably connected with photovoltaic supports, and at least two points of each row of photovoltaic supports are required to be connected with a photovoltaic square matrix grounding grid nearby. And the signal line shielding layer and the metal shielding pipe which are connected with the photovoltaic power generation unit are all in equipotential connection with the photovoltaic support of the photovoltaic array.

At present, the grounding between photovoltaic modules and between the photovoltaic modules and a photovoltaic support frame mainly adopts yellow-green line connection. The grounding connection mode has the advantages of simplicity, easiness in construction and the like, but practice proves that the conditions of missing connection, loose joint, joint fracture and the like of the yellow-green line often occur due to construction process, construction quality and the like. In addition, the grounding connection between the photovoltaic module and the photovoltaic support is single-point connection, so that the system redundancy is insufficient, and the condition that the whole group of grounding fails is easily caused. In order to overcome the defects of the traditional grounding mode of the photovoltaic module, a grounding mode which is convenient to construct, simple in structure, reliable in connection and high in redundancy is developed, and the grounding mode is additionally important for lightning protection design and safety guarantee of the whole photovoltaic power station.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that, to current photovoltaic power plant ground connection unreliable, the not enough situation of redundancy provides one kind and can improve photovoltaic module earthing device of lightning protection ground connection reliability between photovoltaic module's metal crate and the photovoltaic support.

In order to solve the technical problem, the utility model provides a photovoltaic module earthing device, its metal crate that includes a set of photovoltaic module and the photovoltaic support that is used for installing photovoltaic module, install the electrically conductive thorn piece in limit between the metal crate at photovoltaic module both ends and the photovoltaic support, electrically conductive thorn piece in the installation between the metal crate at photovoltaic module middle part and the photovoltaic support, the electrically conductive thorn piece in limit with the one side of well electrically conductive thorn piece has at least four respectively and can impale electrically conductive spine, the another side with the photovoltaic support contact of metal crate's protection film.

The utility model discloses an installation limit electrically conducts thorn piece or well electrically conducts thorn piece between photovoltaic module's metal crate and photovoltaic support, punctures photovoltaic module metal frame's protection film (aluminium oxide film) through electrically conductive sharp thorn to switch on photovoltaic module's metal crate and photovoltaic support ground connection, under the prerequisite that satisfies lightning protection ground resistance designing requirement, reduced engineering cost, saved the work procedure. In addition, at least 4 points of each module are connected with the photovoltaic support in the grounding mode, the lightning protection redundancy of the modules is greatly improved, and the reliability and safety of system lightning protection are improved.

Preferably, the edge conductive prick sheet comprises an edge prick sheet main body, a plurality of first through holes are punched on the edge prick sheet main body, and at least four conductive pricks are integrally arranged on each first through hole.

Preferably, one end of the edge pricking piece main body is provided with a first mounting hole, and the other end of the edge pricking piece main body is provided with four first through holes in rectangular distribution.

Preferably, the metal frames at the two ends of the photovoltaic module are provided with edge pressing blocks, and the metal frames are fastened on the photovoltaic support through bolts penetrating through the edge pressing blocks and the first mounting holes.

Preferably, the middle conductive pricker sheet comprises a middle pricker sheet main body, a plurality of second through holes are punched on the middle pricker sheet main body, and at least four conductive pricks are integrally arranged on each second through hole.

Preferably, the middle of the middle thorn piece main body is provided with a second mounting hole, and two ends of the middle thorn piece main body are provided with four second through holes in a rectangular distribution.

Preferably, the metal frames of the two photovoltaic modules are respectively arranged on the second through holes at the two ends of the middle thorn piece main body, a middle pressing block is arranged on the metal frames, and the metal frames are fastened on the photovoltaic support through bolts penetrating through the middle pressing block and the second mounting holes.

Preferably, the edge conductive stab plate and the middle conductive stab plate are both made of stainless steel materials.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses can change traditional photovoltaic module's ground connection mode, and pass through the utility model discloses structure ground connection reliability is strong, and the redundancy is high, and structural style is simple, can simplify the construction flow for construction speed, for whole engineering creation benefit in the time of guarantee engineering safety.

Drawings

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

FIG. 1 is a perspective view of the edge conductive piercing member of the present invention;

FIG. 2 is a three-dimensional view of the edge conductive piercing member of the present invention, wherein a is a front view, b is a top view, and c is a left side view;

FIG. 3 is a three-dimensional structure view of the conductive piercing sheet of the present invention;

fig. 4 is a three-view diagram of the conductive barbed sheet of the present invention, wherein a is a front view, b is a top view, and c is a left view;

FIG. 5 is a view of the edge conductive stab plate mounting;

fig. 6 is a mounting diagram of the middle conductive spike.

In the figure: 1. an edge conductive barbed sheet; 2. a middle conductive stab plate; 3. pressing the block at the edge; 4. a metal frame; 5. a photovoltaic support; 6. a bracket sloping beam; 7. pressing the blocks; 11. a side pricking sheet main body; 12. conducting spikes; 13. a first mounting hole; 14. a first through hole; 21. a middle thorn sheet main body; 22. conducting spikes; 23. a second mounting hole; 24. a second via.

Detailed Description

The invention is further described below with reference to specific preferred embodiments, without thereby limiting the scope of protection of the invention.

For convenience of description, the relative positional relationship of the components, such as: the descriptions of the upper, lower, left, right, etc. are described with reference to the layout directions of the drawings in the specification, and do not limit the structure of the present patent.

As shown in fig. 1-6, the utility model discloses a photovoltaic module earthing device embodiment includes a set of photovoltaic module's metal crate 4 and is used for installing photovoltaic module's photovoltaic support 5, and is a set of install electrically conductive thorn piece 1 in limit between the metal crate 4 at photovoltaic module's first and last both ends and the photovoltaic support 5, and is a set of electrically conductive thorn piece 2 in the installation between photovoltaic module's the metal crate 4 of the intermediate position of removing first and last both ends and the photovoltaic support 5, electrically conductive thorn piece 1 in limit with the one side of well electrically conductive thorn piece 2 has at least four respectively and can impale electrically conductive spines of metal crate 4's protection film, the another side with photovoltaic support 5 contacts.

Referring to fig. 1 and 2, the edge conductive patch 1 mainly includes an edge patch main body 11, one end of the edge patch main body 11 is provided with a waist-shaped first mounting hole 13, the other end of the edge patch main body is rectangular and evenly punched with four first through holes 14, and at least four conductive spikes 12 are integrally punched on each first through hole 14. The edge pricking sheet main body 11 is made of stainless steel materials and is rectangular in shape.

Referring to fig. 3 and 4, the middle conductive stab piece 2 mainly comprises a middle stab piece main body 21, a second waist-shaped mounting hole 23 is formed in the middle of the middle stab piece main body 21, four second through holes 24 are uniformly punched at two ends of the middle stab piece main body 21 in a rectangular shape, and at least four conductive spikes 22 are integrally punched on each second through hole 24. The middle thorn piece main body 21 is made of stainless steel materials and is rectangular in shape.

See fig. 5 for an installation view of the edge conductive tab 1. The edge conductive prick sheet 1 is arranged between the metal frame 4 of the photovoltaic module and the photovoltaic support 5, and the conductive prick 12 is arranged towards the metal frame 4 of the photovoltaic module so as to prick the alumina film on the metal frame 4 of the photovoltaic module through the conductive prick 12. The flat surface of the edge pricking sheet main body 11 is downwards contacted with the photovoltaic support, so that the metal frame 4 of the photovoltaic module is communicated with the photovoltaic support 5. Preferably, the metal frames 4 at two ends of the photovoltaic module are provided with edge pressing blocks 3, the metal frames 4 are fastened on the photovoltaic support 5 through bolts penetrating the edge pressing blocks 3 and the first mounting holes 13, and the photovoltaic support 5 is fixed on the support oblique beam 6 through the bolts.

See fig. 6 for an installation view of the middle conductive patch 2. The middle conductive thorn pieces 2 are arranged between the metal frames 4 of the photovoltaic components and the photovoltaic supports 5, and the metal frames 4 of the two photovoltaic components are respectively arranged on the conductive spikes 22 at the two ends of the middle conductive thorn pieces 2 so as to puncture the alumina film on the metal frames 4 of the photovoltaic components through the conductive spikes 22. The flat surface of the middle barbed sheet main body 21 is downward in contact with the photovoltaic support 5, thereby communicating the metal frame 4 of the photovoltaic module with the photovoltaic support 5. Preferably, the metal frame 4 is provided with a middle pressing block 7, and the metal frame 4 is fastened on the photovoltaic bracket 5 through bolts penetrating through the middle pressing block 7 and the second mounting hole 23.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and those skilled in the art can utilize the technical content disclosed above to make many possible variations and modifications to the technical solution of the present invention, or to modify equivalent embodiments with equivalent variations, without departing from the scope of the technical solution of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention should fall within the protection scope of the technical solution of the present invention.

Claims (8)

1. The utility model provides a photovoltaic module earthing device, includes a set of photovoltaic module's metal crate and is used for installing photovoltaic module's photovoltaic support, its characterized in that, install the electrically conductive thorn piece in limit between the metal crate at photovoltaic module both ends and the photovoltaic support, electrically conductive thorn piece in the installation between the metal crate at photovoltaic module middle part and the photovoltaic support, the electrically conductive thorn piece in limit with the one side of well electrically conductive thorn piece has at least four electrically conductive spines that can pierce through metal crate's protection film respectively, the another side with the photovoltaic support contact.

2. The photovoltaic module grounding device of claim 1, wherein the edge conductive stabs include an edge stabs main body, a plurality of first through holes are punched on the edge stabs main body, and at least four conductive spikes are integrally disposed on each first through hole.

3. The photovoltaic module grounding device as claimed in claim 2, wherein one end of the main body of the edge pricking piece is provided with a first mounting hole, and the other end of the main body of the edge pricking piece is provided with four first through holes which are distributed in a rectangular shape.

4. The grounding device of a photovoltaic module according to claim 3, wherein the metal frames at two ends of the photovoltaic module are provided with edge pressing blocks, and the metal frames are fastened on the photovoltaic support through bolts penetrating through the edge pressing blocks and the first mounting holes.

5. The photovoltaic module grounding device according to claim 1, wherein the middle conductive thorn sheet comprises a middle thorn sheet main body, a plurality of second through holes are punched on the middle thorn sheet main body, and at least four conductive spikes are integrally arranged on each second through hole.

6. The photovoltaic module grounding device of claim 5, wherein a second mounting hole is formed in the middle of the middle thorn sheet main body, and four second through holes are distributed in a rectangular shape at two ends of the middle thorn sheet main body.

7. The grounding device of a photovoltaic module according to claim 6, wherein the metal frames of the two photovoltaic modules are respectively disposed on the second through holes at the two ends of the middle barbed sheet main body, and a middle pressing block is disposed on the metal frames, and the metal frames are fastened on the photovoltaic support through bolts penetrating through the middle pressing block and the second mounting holes.

8. The photovoltaic module grounding device of claim 1, wherein the edge conductive stab and the middle conductive stab are made of stainless steel.

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