CN217588953U

CN217588953U - Photovoltaic panel assembly and photovoltaic system

Info

Publication number: CN217588953U
Application number: CN202221525488.6U
Authority: CN
Inventors: 张治森; 王立宏; 刘名奇; 叶善申
Original assignee: Nanjing Dongsong Power Technology Co ltd
Current assignee: Nanjing Dongsong Power Technology Co ltd
Priority date: 2022-06-17
Filing date: 2022-06-17
Publication date: 2022-10-14
Anticipated expiration: 2032-06-17

Abstract

The utility model relates to a photovoltaic power generation technical field particularly relates to photovoltaic panel subassembly and photovoltaic system, include: the solar cell panel comprises a cell sheet layer, an EVA layer, a glass layer, a back plate layer and an aluminum alloy frame, wherein the glass layer-EVA layer-cell sheet layer-EVA layer and the back plate layer are bonded and fixed from top to bottom to form an integral structure and are wrapped by the aluminum alloy frame on the periphery; a flexible connecting wire; the aluminum alloy frame is provided with an opening, and the first end of the flexible connecting line is electrically connected with the cell sheet layer of the photovoltaic cell panel. The utility model discloses establish ties through the flexible connecting line between a plurality of photovoltaic boards, make the photovoltaic board form predetermined power's photovoltaic system, photovoltaic system does not need wiring between the photovoltaic board when using, directly lays in the use place, and only has a terminal box, is convenient for be connected with consumer, and in addition, the flexible connecting line has better flexibility and pull resistance, can guarantee life and the reliability of use.

Description

Photovoltaic panel assembly and photovoltaic system

Technical Field

The utility model relates to a photovoltaic power generation technical field particularly relates to photovoltaic panel subassembly and photovoltaic system.

Background

The photovoltaic panel generally comprises a cell, an EVA layer packaged outside the cell, tempered glass and a back plate, wherein an aluminum alloy is arranged on a frame to play a supporting and sealing role, and a junction box is arranged on the back plate and is used for being connected with other junction boxes to form a target voltage.

The area of a single photovoltaic panel is usually 1.5 x 1m-2m x 1m, the power generation power is 200-300w, the single photovoltaic panel is not easy to carry and easy to damage after the area is increased, generally a plurality of photovoltaic panels are connected in series to meet the power requirement of use, the photovoltaic panels are connected through a junction box and a cable, and when the photovoltaic panel is used as an outdoor power source, the wiring of a plurality of cell panels is complicated.

SUMMERY OF THE UTILITY MODEL

Defect and not enough to photovoltaic panel among the prior art, the utility model aims to reduce the wiring step between the photovoltaic panel, make the photovoltaic panel be convenient for fold the transportation and expand the use.

The utility model discloses the first aspect provides a technical scheme, a photovoltaic panel assembly, include:

the solar cell panel comprises a cell sheet layer, an EVA layer, a glass layer, a back plate layer and an aluminum alloy frame, wherein the glass layer, the EVA layer, the cell sheet layer, the EVA layer and the back plate layer are bonded and fixed from top to bottom to form an integral structure and are wrapped by the aluminum alloy frame on the periphery;

a flexible connecting wire;

the aluminum alloy frame is provided with a hole, the first end of the flexible connecting line is electrically connected with the cell sheet layer of the photovoltaic cell panel, and the second end of the flexible connecting line penetrates through the hole of the aluminum alloy frame.

Preferably, the flexible connecting line is in a ribbon shape.

Preferably, the flexible connecting line comprises an insulating layer, a braided layer and a conductor, the conductor is arranged in a straight line shape in the cross section direction of the flexible connecting line, and the braided layer is embedded in the insulating layer.

Preferably, the woven layer comprises an aramid fiber woven layer.

Preferably, the drift diameter of the outer side of the opening is smaller than the drift diameter of the inner side of the opening, and the insulating layer is filled in the opening.

Preferably, the trompil is trapezoidal hole, the trompil has the step face, the both ends of insulating layer are equipped with protruding structure, protruding structure card is in the step face.

Preferably, the insulating layer comprises a nylon insulating layer.

Preferably, the direction of the opening is inclined downwards.

The utility model discloses the second aspect provides a technical scheme, a photovoltaic system, including a plurality of foretell photovoltaic panel subassemblies, wherein, a plurality of photovoltaic panel subassemblies include two marginal cell boards and a plurality of intermediate cell boards, and first marginal cell board, a plurality of intermediate cell boards and second marginal cell board pass through the flexonics line is established ties, and the backplate of first marginal cell board is equipped with the terminal box, the positive pole of first marginal cell board and the negative pole of second marginal cell board are introduced the terminal box.

Preferably, diodes are connected between two adjacent solar panels in parallel.

Compared with the prior art, the utility model has the advantages of:

the utility model discloses establish ties through the flexible connecting wire between a plurality of photovoltaic boards, make the photovoltaic system that the photovoltaic board formed predetermined power, the photovoltaic system need not work a telephone switchboard between the photovoltaic board when using, directly lays in the use place, and only has a terminal box, is convenient for be connected with consumer, in addition, the flexible connecting wire has better flexibility and pull resistance, can guarantee life and reliability of use.

Drawings

The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:

fig. 1 is a schematic structural view of a photovoltaic panel assembly according to the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

fig. 3 is a wiring schematic of the photovoltaic system shown in the present invention;

fig. 4 is a schematic diagram of the connection of three battery plates according to the present invention;

fig. 5 is a schematic diagram of the folded state of the four battery panels of the present invention.

Detailed Description

For a better understanding of the technical content of the present invention, specific embodiments are described below in conjunction with the accompanying drawings.

When the photovoltaic board is used as the power in the open air, for example open-air pump machine draws water, electric drive engineering equipment, the resident power supply in remote area etc. because the power of monolithic panel is limited, generally about 200-300w, to a kilowatt and above consumer, generally all need 4-6 panels to establish ties and form photovoltaic system, in order to satisfy the power supply demand, but to the great power supply demand of mobility, at every turn all need the wiring connection obviously not satisfy the work demand, and photovoltaic board quantity is more, then the time that needs is just more, therefore, the utility model discloses it connects predetermined quantity's panel together through flexible connection structure series to aim at, in order to avoid the later stage wiring, and be favorable to loading and expansion to lay.

With reference to fig. 1, the first aspect of the present invention provides a technical solution, a photovoltaic panel assembly, which mainly includes a cell panel 10, wherein the cell panel 10 includes a cell layer 101, an EVA layer 102, a glass layer 103, a back plate layer 104 and an aluminum alloy frame 105, the glass layer 103-EVA layer 102-cell layer 101-EVA layer 102 and back plate layer 104 are bonded and fixed from top to bottom to form an integrated structure, and are wrapped by the aluminum alloy frame 105 of the periphery to form a monolithic cell panel 10 structure.

The cell sheet layer 101 includes a plurality of cells connected in series, and is laid out in a rectangular array.

As shown in connection with fig. 1-2, the aluminum alloy frame 105 is provided with an opening 106, a first end of the flexible connecting wire 20 is electrically connected to the cell layer 101 of the photovoltaic cell panel 10, and a second end passes through the opening 106 of the aluminum alloy frame 105 to form a free end. Optionally, the second end of the flexible connecting line 20 is connected to another panel 10, i.e. forming a series connection between two panels 10.

In order to make the flexible connection line 20 more resistant to bending, the flexible connection line 20 is in the form of a ribbon.

When the distance between two panel 10 is too big, can cause to drag flexible connection line 20, further, flexible connection line 20 includes insulating layer 22, weaving layer 23 and conductor 24, and in flexible connection line 20's cross-sectional direction, conductor 24 is a style of calligraphy and arranges, and weaving layer 23 inlays to be established in insulating layer 22. In this way, the tensile strength of the flexible connecting line 20 can be improved to cope with the pulling of the flexible connecting line 20 by the pulling force.

Preferably, the woven layer 23 includes an aramid fiber woven layer 23, and the aramid fiber has better tensile property and toughness, and can form stronger tensile property under a smaller size.

Further, in order to improve the tensile strength, the outside diameter of the opening 106 is smaller than the inside diameter, and the insulating layer 22 is filled in the opening 106. In this way, when the two battery plates 10 are separated from each other and the maximum length of the flexible connecting line 20 is reached, the insulation layer 22 is limited by the opening 106 to form a tensile resistance.

Preferably, the opening 106 is a trapezoidal hole, the opening 106 has a step surface, the two ends of the insulating layer 22 are provided with the protruding structures 21, and the protruding structures 21 are clamped on the step surface. In this manner, the raised structure 21 can catch on the step surface, preventing the flexible connecting cord 20 from being pulled outwardly.

The insulating layer 22 may be made of polyethylene, and forms a good insulation for the inner conductor 24 and a good tensile strength.

In other embodiments, the insulating layer 22 is a nylon insulating layer, which has better elasticity and fatigue resistance.

Preferably, the direction of the opening hole 106 is inclined downward, so that water is prevented from penetrating into the aluminum alloy frame 105 from the side wall of the aluminum alloy frame 105.

With reference to fig. 3-4, the second aspect of the present invention provides a technical solution, a photovoltaic system, comprising a plurality of above-mentioned photovoltaic panel assemblies, wherein the plurality of photovoltaic panel assemblies comprise two edge panels 11 and a plurality of middle panels 12, the first edge panel, the plurality of middle panels 12 and the second edge panel are connected in series by a flexible connecting line 20, the back plate of the first edge panel is provided with a junction box 50, and the positive electrode of the first edge panel and the negative electrode of the second edge panel are introduced into the junction box 50.

Fig. 3 shows two edge panels 11 and one middle panel 12, resulting in a photovoltaic system that can achieve 600-900w of power, and fig. 4 shows two edge panels 11 and two middle panels 12, resulting in a photovoltaic system that can achieve 800-1200w of power.

The positive electrode of the first edge cell panel is led into the junction box 50, the negative electrode of the second edge cell panel is led into the junction box 50 through the return line 40, the return line 40 also adopts a flexible connecting line, the length between the two photovoltaic panels is the same, and the tensile capacity is improved.

Preferably, diodes 30 are connected in parallel between two adjacent panels 10. To prevent reverse current flow between adjacent two of the cell plates 10.

Thus, the photovoltaic panels form a whole, only one junction box 50 is provided as an output, and the junction box 50 is connected to the rectifying/voltage regulating device without wiring between each photovoltaic panel, and as shown in fig. 5, the photovoltaic panels can be folded and placed, and when the photovoltaic panels are used, the stacked photovoltaic panels can be unfolded for use.

In combination with the above embodiment, the utility model discloses establish ties through the flexible connecting line between a plurality of photovoltaic boards, make the photovoltaic board form predetermined power's photovoltaic system, photovoltaic system does not need wiring between the photovoltaic board when using, directly lays in the use place, and only has a terminal box, is convenient for be connected with consumer, and in addition, the flexible connecting line has better flexibility and pull resistance, can guarantee life and the reliability of use.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. The present invention is well known in the art and can be modified and decorated without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention is subject to the claims.

Claims

1. A photovoltaic panel assembly, comprising:

the solar cell panel (10) comprises a cell sheet layer (101), an EVA layer (102), a glass layer (103), a back plate layer (104) and an aluminum alloy frame (105), wherein the glass layer (103) -EVA layer (102) -cell sheet layer (101) -EVA layer (102) and back plate layer (104) are bonded and fixed from top to bottom to form an integral structure, and are wrapped by the aluminum alloy frame (105) on the periphery;

a flexible connection line (20);

the aluminum alloy frame (105) is provided with an opening (106), the first end of the flexible connecting line (20) is electrically connected with the cell sheet layer (101) of the photovoltaic cell panel (10), and the second end of the flexible connecting line penetrates through the opening (106) of the aluminum alloy frame (105).

2. The photovoltaic panel assembly according to claim 1, wherein the flexible connecting line (20) is in the form of a ribbon.

3. The photovoltaic panel assembly according to claim 1, wherein the flexible connecting wire (20) comprises an insulating layer (22), a braid (23) and a conductor (24), the conductor (24) being arranged in a straight line in a cross-sectional direction of the flexible connecting wire (20), the braid (23) being embedded in the insulating layer (22).

4. The photovoltaic panel assembly according to claim 3, wherein the braid (23) comprises an aramid fiber braid (23).

5. The photovoltaic panel assembly of claim 3, wherein a diameter of an outer side of the aperture (106) is smaller than a diameter of an inner side, the insulating layer (22) filling in the aperture (106).

6. The photovoltaic panel assembly according to claim 5, wherein the opening (106) is a trapezoidal hole, the opening (106) has a step surface, the insulating layer (22) is provided with protruding structures (21) at two ends, and the protruding structures (21) are clamped on the step surface.

7. The photovoltaic panel assembly of claim 3, wherein the insulating layer (22) comprises a nylon insulating layer.

8. The photovoltaic panel assembly of claim 1, wherein the apertures (106) are oriented obliquely downward.

9. A photovoltaic system, characterized in that it comprises a plurality of photovoltaic panel assemblies according to any one of claims 1 to 8, wherein a plurality of photovoltaic panel assemblies comprises two edge panels (11) and a plurality of intermediate panels (12), a first edge panel, a plurality of intermediate panels (12) and a second edge panel being connected in series by said flexible connecting line (20), the back sheet of the first edge panel being provided with a junction box (50), the positive pole of said first edge panel and the negative pole of the second edge panel being introduced into said junction box (50).

10. Photovoltaic system according to claim 9, characterized in that diodes (30) are connected in parallel between two adjacent panels (10).