CN210073874U - Photovoltaic module - Google Patents

Abstract

The utility model discloses a photovoltaic module relates to the photovoltaic technology field, include: a photovoltaic unit; the packaging unit is arranged opposite to the photovoltaic unit and is provided with a first lead-out hole; the spacing frame is arranged between the photovoltaic unit and the packaging unit and is hermetically connected with the photovoltaic unit and the packaging unit; the cushion block is arranged between the photovoltaic unit and the packaging unit and is located on the inner side of the spacing frame, the cushion block is in sealing contact with the photovoltaic unit and the packaging unit respectively, a second leading-out hole communicated with the first leading-out hole is formed in the cushion block, and a leading-out wire on the back side of the photovoltaic unit passes through the second leading-out hole and extends out of the first leading-out hole. The utility model discloses a set up the cushion between photovoltaic unit and encapsulation unit, the hole is drawn forth from the first hole of drawing forth to the lead-out wire through the second, and when photovoltaic unit's lead-out wire was drawn forth, can not exert an influence to the hollow structure's that photovoltaic unit, encapsulation unit and space frame formed gas tightness, and then prevent that photovoltaic module from producing atomizing phenomenon, promotes photovoltaic module's reliability.

Description

Photovoltaic module

Technical Field

The utility model relates to a photovoltaic technology field especially relates to a photovoltaic module.

Background

Building Integrated Photovoltaics (BIPV) is a technology for integrating Photovoltaic modules into buildings. The photovoltaic module not only serves as a part of a building, but also can supply power to the building, so that the carbon emission of the building is reduced.

At present, the hollow photovoltaic module can well meet the requirements of sound insulation and heat insulation of a building. However, the hollow photovoltaic module is often atomized inside the hollow photovoltaic module due to insufficient sealing performance of the lead-out wire, the power generation efficiency of the hollow photovoltaic module is seriously attenuated, the photovoltaic investment cost recovery period is prolonged, and the benign development of photovoltaic building integration is influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a photovoltaic module, include: a photovoltaic unit; the packaging unit is arranged opposite to the photovoltaic unit and is provided with a first lead-out hole; the spacing frame is arranged between the photovoltaic unit and the packaging unit and is hermetically connected with the photovoltaic unit and the packaging unit; the cushion block is arranged between the photovoltaic unit and the packaging unit and is located on the inner side of the spacing frame, the cushion block is in sealing contact with the photovoltaic unit and the packaging unit respectively, a second leading-out hole communicated with the first leading-out hole is formed in the cushion block, and a leading-out wire on the back side of the photovoltaic unit passes through the second leading-out hole and extends out of the first leading-out hole.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

The accompanying drawings are included to provide a further understanding of the embodiments of the present invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention and not to limit the embodiments of the invention.

Fig. 1 is a schematic structural view of a photovoltaic module disclosed in the present invention;

FIG. 2 is a rear view of a photovoltaic module disclosed in FIG. 1;

fig. 3 is a schematic structural view of another photovoltaic module disclosed in the present invention;

fig. 4 is a schematic view of a partial structure of another photovoltaic module disclosed in the present invention;

fig. 5 is a schematic view of another photovoltaic module according to the present invention.

Detailed Description

In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined below to clearly and completely describe the technical solution of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention.

The utility model discloses a photovoltaic module 10, as shown in figure 1 and figure 2, include: a photovoltaic unit 20; the packaging unit 30 is arranged opposite to the photovoltaic unit 20 and is provided with a first lead-out hole 31; the spacing frame 40 is arranged between the photovoltaic unit 20 and the packaging unit 30 and is hermetically connected with the photovoltaic unit 20 and the packaging unit 30; and the cushion block 50 is arranged between the photovoltaic unit 20 and the packaging unit 30 and positioned on the inner side of the spacing frame 40, and is in sealing contact with the photovoltaic unit 20 and the packaging unit 30 respectively, the cushion block 50 is provided with a second lead-out hole 51 communicated with the first lead-out hole 31, and the lead-out wire 21 on the back side of the photovoltaic unit 20 passes through the second lead-out hole 51 and extends out of the first lead-out hole 31.

As shown in fig. 1, the photovoltaic unit 20 includes a back sheet 23, a photovoltaic cell 24, and a front sheet 22, which are sequentially disposed in a direction away from the encapsulation unit 30. The photovoltaic cell 24 is fixed between the front plate 22 and the back plate 23 by means of bonding. The photovoltaic cell 24 may be a thin film photovoltaic cell, and the thin film photovoltaic cell may be disposed on the front panel 22, such as an amorphous silicon cell, or may be disposed on the back panel, such as a copper indium gallium selenide cell, although when the front and back electrodes of the thin film photovoltaic cell 24 adopt light-transmitting electrodes, the thin film photovoltaic cell is not limited to be disposed on the front panel 22 or the back panel 23. The photovoltaic unit 20 may be transparent or non-transparent, depending on the specific application requirements of the photovoltaic module 10. Specifically, the front plate 22 and the back plate 23 are both glass. Optionally, the front plate 22 and the back plate 23 are made of tempered glass. Of course, the front plate 22 and the back plate 23 may also be made of a polymer material, such as a polyester material, a fluorine-containing material, or a polyamide material, and the front plate 22 and the back plate 23 may be made of the same material or different materials, which is not limited herein. The photovoltaic cell 24 is bonded between the front plate 22 and the back plate 23 by an encapsulant, which may be selected from a hot melt adhesive film, such as Ethylene Vinyl Acetate (EVA), Polyolefin (POE), polyvinyl butyral (PVB), and the like. As shown in fig. 4, electricity generated by the photovoltaic cells 24 is led out through the outlet 21 on the back side of the photovoltaic cells 24, the outlet 21 may be connected to the junction box 80, and the plurality of photovoltaic modules 10 are connected through the junction box 80, but of course, the plurality of photovoltaic modules 10 may also be directly electrically connected through the outlet 21.

The encapsulation unit 30, as shown in fig. 1, is disposed opposite the photovoltaic unit 20. The encapsulation unit 30 may be glass, which may be single-layer glass or laminated glass. The laminated glass is a composite glass product which is formed by two or more pieces of glass, wherein one or more layers of organic polymer intermediate films are sandwiched between the two or more pieces of glass, and the glass and the intermediate films are permanently bonded into a whole after special high-temperature prepressing (or vacuumizing) and high-temperature high-pressure processing. The laminated glass effectively prevents the occurrence of the falling accident of the puncture and penetration of the fragments, ensures the personal safety and simultaneously improves the sound and heat insulation performance. Of course, the encapsulation unit 30 may also be made of a polymer material, such as organic glass (PMMA), polyethylene terephthalate (PET), or Polyamide (PA), which is beneficial for reducing the dead weight of the photovoltaic module. The specific material and shape of the encapsulation unit 30 are selected according to actual requirements, and are not specifically limited herein. The encapsulation unit 30 is provided with a first lead-out hole 31 for leading out the lead-out wire 21 on the back side of the photovoltaic unit 20.

And the spacing frame 40 is arranged between the photovoltaic unit 20 and the packaging unit 30 and is hermetically connected with the photovoltaic unit 20 and the packaging unit 30. As shown in fig. 1, a hollow structure is formed between the photovoltaic unit 20 and the encapsulation unit 30 by a spacer frame 40, thereby forming a hollow photovoltaic module. The spacer frame 40 may be made of metal, such as aluminum, or may be made of a resin-based material, which is not limited herein. The spacer frame 40 may be a hollow structure, and the hollow structure may be filled with a desiccant, such as a molecular sieve, etc. The spacer frame 40 may be hermetically bonded to the photovoltaic unit 20 and the encapsulation unit 30 by a sealant, which may be butyl rubber, silicone rubber, or the like. When the spacer frame 40 is made of glass, glass frit may be used to solder-seal the photovoltaic cell 20 and the encapsulation cell 30.

The spacer block 50, as shown in fig. 1, is disposed between the photovoltaic cell 20 and the encapsulation unit 30 and inside the spacer frame 40, and is in sealing contact with the photovoltaic cell 20 and the encapsulation unit 30, respectively. The pad 50 may be made of a resin material such as fluorine resin or rubber, or may be made of a metal material. The spacer 50 is required to have a certain resistance to water vapor transmission. The spacer 50 may be in sealing abutment with the photovoltaic unit 20 and the encapsulation unit 30, or may be sealingly bonded by a sealant. Alternatively, the spacer 50 may be hermetically bonded to the photovoltaic unit 20 and the encapsulation unit 30, and the sealant may be butyl rubber, silicone rubber, or the like. The pad block 50 is provided with a second lead-out hole 51 communicated with the first lead-out hole 31, and the lead-out wire 21 on the back side of the photovoltaic unit 20 passes through the second lead-out hole 51 and extends out of the first lead-out hole 31.

The utility model discloses a set up cushion 50 between photovoltaic unit 20 and encapsulation unit 30, cushion 50 outer wall and photovoltaic unit 20, encapsulation unit 30 and interval frame 40 can form hollow structure, and the hole 51 is drawn forth from first drawing forth hole 31 through the second to the lead-out wire 21, can not exert an influence to the hollow structure's that photovoltaic unit 20, encapsulation unit 30 and interval frame 40 formed leakproofness, and then prevent that photovoltaic module 10 from producing atomizing phenomenon, promote photovoltaic module 10's reliability.

In some embodiments, as shown in fig. 3, the orthographic projection of the photovoltaic cell 24 and the backsheet 23 on the front sheet 22 is located inward of the edge of the front sheet 22, and the spacer frame 40 is sealingly attached to the backside surface of the front sheet 22. The photovoltaic cell 24 and the back plate 23 are arranged in a hollow structure formed by the spacing frame 40, the front plate 22 and the packaging unit 30, and the hollow structure is a sealed environment, so that the hollow structure can prevent water vapor from corroding the photovoltaic cell 24 and packaging materials arranged between the front plate 22 and the photovoltaic cell 24 or between the back plate 23 and the photovoltaic cell 24, and the service life of the photovoltaic module 10 is prolonged. Meanwhile, the photovoltaic cell 24 and the back plate 23 are arranged in the hollow structure formed by the spacing frame 40, the front plate 22 and the packaging unit 30, and no edge sealing glue is arranged between the front plate 22 and the back plate 23, so that the cost of the photovoltaic module 10 can be saved.

In some embodiments, as shown in fig. 1, the back plate 23 is provided with a third lead-out hole 231 for the lead-out wire 21 to pass through, and an orthogonal projection of the third lead-out hole 231 on the back plate 23 is located within an orthogonal projection range of the second lead-out hole 51 on the back plate 23. The third lead-out hole 231 is located in the orthographic projection range of the second lead-out hole 51 on the back plate 23, so that the lead-out wires 21 can be directly led out from the first lead-out hole 31 and the second lead-out hole 51, the length of the lead-out wires 21 can be reduced, the lead-out complexity of the lead-out wires 21 is reduced, and meanwhile the aesthetic feeling of the photovoltaic module 10 is improved. Optionally, the first lead-out hole 31, the second lead-out hole 51 and the third lead-out hole 231 are coaxially arranged.

In some embodiments, as shown in fig. 1, the second lead-out hole 51 is filled with the first sealant 60, or both the second lead-out hole 51 and the first lead-out hole 31 are filled with the first sealant 60. The first sealant 60 can further increase the sealing of the hollow structure of the photovoltaic module 10. Meanwhile, the first sealant 60 is also beneficial to heat dissipation of the outgoing line 21, short circuit of the outgoing line 21 is prevented, and safety of the photovoltaic module 10 is improved.

In some embodiments, as shown in fig. 4 and 5, the photovoltaic module further includes a junction box 80 electrically connected to the outgoing wires 21, the junction box 80 is disposed on a side of the encapsulation unit 30 away from the photovoltaic unit 20, and an orthogonal projection of the pad 50 on the encapsulation unit 30 is located within an orthogonal projection range of the junction box 80 on the encapsulation unit 30. The junction box 80 is used for electrical connection between a plurality of photovoltaic modules 10. The orthographic projection of the cushion block 50 on the packaging unit 30 is located in the range of the orthographic projection of the junction box 80 on the packaging unit 30, and the cushion block 50 can be shielded by the junction box 80, so that the appearance of the photovoltaic assembly 10 is beautified.

Example one

The utility model discloses a photovoltaic module, as shown in figure 1, include: a photovoltaic unit 20; the packaging unit 30 is arranged opposite to the photovoltaic unit 20 and is provided with a first lead-out hole 31; the spacing frame 40 is arranged between the photovoltaic unit 20 and the packaging unit 30 and is hermetically connected with the photovoltaic unit 20 and the packaging unit 30; and the cushion block 50 is arranged between the photovoltaic unit 20 and the packaging unit 30 and positioned on the inner side of the spacing frame 40, and is in sealing contact with the photovoltaic unit 20 and the packaging unit 30 respectively, the cushion block 50 is provided with a second lead-out hole 51 communicated with the first lead-out hole 31, and the lead-out wire 21 on the back side of the photovoltaic unit 20 passes through the second lead-out hole 51 and extends out of the first lead-out hole 31.

Specifically, as shown in fig. 1, the photovoltaic unit 20 includes a front plate 22, a back plate 23, and a photovoltaic cell 24 disposed between the front plate 22 and the back plate 23, and the back plate 23 is opposite to the encapsulation unit 30, that is, the photovoltaic unit 20 includes the back plate 23, the photovoltaic cell 24, and the front plate 22 disposed in this order in a direction away from the encapsulation unit 30. The front plate 22 and the back plate 23 have the same dimensions on opposite sides. The front plate 22 and the back plate 23 are both made of glass, but may be made of other materials, and this embodiment is not limited. The photovoltaic cell 24 is fixed between the front plate 22 and the back plate 23 by an encapsulating material, which may be a hot melt adhesive film such as EVA (ethylene vinyl acetate), polyolefin, or polyvinyl butyral (PVB). Optionally, the hot-melt adhesive film is PVB, and the PVB is used for manufacturing an interlayer material of the safety glass, so that the safety glass is good in transparency and strong in impact resistance. The photovoltaic unit 20 is provided on the back side with lead wires 21, and the photovoltaic modules 10 are electrically connected through the lead wires 21.

The packaging unit 30 is disposed opposite to the photovoltaic unit 20, and is provided with a first lead-out hole 31. Specifically, the encapsulation unit 30 is made of single-layer glass, but may be made of laminated glass or resin material, which is not limited herein. The packaging unit 3 is provided with a first lead-out hole 31, and the arrangement position of the first lead-out hole 31 is determined according to the position of the lead-out wire 21 and the requirement of the photovoltaic module 10. In the present embodiment, the first lead-out hole 31 is opposed to the lead-out wire 21 at the back-side lead-out position of the photovoltaic unit 20.

And the spacing frame 40 is arranged between the photovoltaic unit 20 and the packaging unit 30 and is hermetically connected with the photovoltaic unit 20 and the packaging unit 30. Specifically, the spacer frame 40 is made of aluminum, and the spacer frame 40 is filled with a molecular sieve, but may be filled with other drying agents. As shown in fig. 2, the spacer frame 40 is disposed at the edge disposed at the opposite side of the photovoltaic unit 20 and the encapsulation unit 30. The spacer frame 50 is bonded between the photovoltaic unit 20 and the encapsulation unit 30 by a sealing adhesive. The sealant can be selected from butyl rubber, silicone rubber, etc. Optionally, the sealant is butyl rubber, and the butyl rubber has good waterproof performance and ageing resistance.

The spacer block 50 is disposed between the photovoltaic cell 20 and the encapsulation unit 30 and inside the spacer frame 40, and is in sealing contact with the photovoltaic cell 20 and the encapsulation unit 30, respectively. Specifically, as shown in fig. 1, the spacer block 50 may be made of the same material as the spacer frame 40, or may be made of a different material. The spacer 50 may be made of a metal material or a resin material. The spacer 50 may be sealed against the photovoltaic cell 20 and the encapsulation cell 30, or may be sealed by adhesive sealing. The sealant can be butyl rubber or silicone rubber. The outer wall of the spacer block 50 forms a hollow structure with the photovoltaic cell 20, the encapsulation cell 30, and the spacer frame 40. The cushion block 50 is provided with a second lead-out hole 51 communicated with the first lead-out hole 31, and the lead-out wire 21 on the back side of the photovoltaic unit 20 passes through the second lead-out hole 51 and extends out of the first lead-out hole 31. Optionally, the second lead-out hole 51 is a straight hole, one end of the straight hole is communicated with the first lead-out hole 31, the other end of the straight hole is in contact with the back side of the photovoltaic unit 20, and the lead-out wire 21 is led out of the first lead-out hole 31 through the second lead-out hole 51.

By arranging the cushion block 50 between the photovoltaic unit 20 and the packaging unit 30, the outer wall of the cushion block 50, the photovoltaic unit 20, the packaging unit 30 and the spacing frame 40 can form a hollow structure, and the outgoing line 21 is led out from the first outgoing hole 31 of the packaging unit 30 through the second outgoing hole 51 of the cushion block 50, so that the air tightness of the hollow structure formed by the photovoltaic unit 20, the packaging unit 30 and the spacing frame 40 is not affected, the photovoltaic module 10 is prevented from being atomized, and the reliability of the photovoltaic module 10 is improved.

The lead wires 21 are arranged on the back side of the photovoltaic unit 2, and may be led out between the gasket 50 and the photovoltaic unit 2 and then bent at an angle, for example, 90 ° at the position of the second lead-out hole 51 such that the lead wires 21 pass through the first lead-out hole 31 and the second lead-out hole 51. Further, as shown in fig. 1, the back plate 23 is provided with a third lead-out hole 231 for the lead-out wire 21 to pass through, and an orthographic projection of the third lead-out hole 231 on the back plate 23 is located within an orthographic projection range of the second lead-out hole 51 on the back plate 23. The third lead-out hole 231 is located in the orthographic projection range of the second lead-out hole 51 on the back plate 23, and the lead-out wires 21 can be directly led out from the first lead-out hole 31 and the second lead-out hole 51, so that the length of the lead-out wires 21 can be reduced, the lead-out complexity of the lead-out wires 21 can be reduced, and meanwhile, the aesthetic feeling of the photovoltaic module 10 can be improved. Optionally, the first lead-out hole 31, the second lead-out hole 51 and the third lead-out hole 231 are coaxially arranged.

Further, as shown in fig. 2, the spacer 50 has a cylindrical shape. The wall thickness of the cushion block 50 is not less than 5mm, and the cushion block 50 is thick, so that the contact area between the cushion block 50 and the packaging unit 30 and the contact area between the cushion block 50 and the photovoltaic unit 20 are increased, and the sealing performance is improved.

In order to improve the sealing performance of the leading-out position of the leading-out wire 21 of the photovoltaic unit 20, the second leading-out hole 51 is filled with the first sealant 60. Specifically, as shown in fig. 1, the first sealant 60 includes butyl rubber, silicone rubber, or the like, and the first sealant 60 may increase the overall sealing performance between the cushion block 50 and the photovoltaic unit 20 and the encapsulation unit 30. Meanwhile, the first sealant 60 is also beneficial to heat dissipation of the outgoing line 21, and prevents the positive and negative electrodes of the outgoing line 21 from being short-circuited.

Further, the first lead-out hole 31 may also be filled with the first sealant 60, that is, the first lead-out hole 31 and the second lead-out hole 51 are filled with the first sealant 60 at the same time.

Further, the photovoltaic module 10 further includes a second sealant 70, and the second sealant 70 is disposed outside the spacer frame 40 and is hermetically bonded to the photovoltaic unit 20 and the encapsulation unit 30. The second sealant 70 may be disposed between the photovoltaic unit 20 and the encapsulation unit 30, that is, the orthographic projection of the spacer frame 50 on the photovoltaic unit 20 is inside the edge of the photovoltaic unit 20, and the outside of the spacer frame 50 is at a distance, typically 5mm to 20mm, from the edge of the photovoltaic unit 20. The second sealant 70 may also wrap around the edges of the photovoltaic cell 20 and the encapsulation cell 30. The second sealant 70 can improve the sealing performance of the hollow structure of the photovoltaic module, and prevent atomization in the hollow structure.

The utility model discloses a set up cushion 50 between photovoltaic unit 20 and encapsulation unit 30, cushion 50 outer wall and photovoltaic unit 20, encapsulation unit 30 and spacer 40 can form hollow structure, the hole 51 is drawn forth from encapsulation unit 30's first hole 31 of drawing forth to the lead-out wire 21 through cushion 50's second, can not exert an influence to photovoltaic unit 20, encapsulation unit 30 and the hollow structure's that spacer 40 formed gas tightness, and then prevent that photovoltaic module 10 from producing atomizing phenomenon, promote photovoltaic module 10's reliability.

Example two

The utility model discloses a photovoltaic module 10, as shown in fig. 3, the photovoltaic module 10 that is different from the disclosure of embodiment 1 lies in that the orthographic projection of photovoltaic cell 24 and backplate 23 on front bezel 22 is located front bezel 22 edge inboard, and interval frame 40 is connected with front bezel 22 dorsal surface sealing.

Specifically, the orthographic projection of the photovoltaic cell 24 and the back sheet 23 on the front sheet 22 is positioned inside the edge of the front sheet 22, namely, the dimension of the photovoltaic cell 24 and the back sheet 23 on the side opposite to the front sheet is smaller than that of the front sheet 22, and the spacing frame 40 is hermetically connected with the back side surface of the front sheet 22. The hollow structure formed by the spacer frame 40, the front plate 22 and the encapsulation unit 30 can provide a good sealing environment, and the photovoltaic cell 24 and the back plate 23 are arranged in the hollow structure, so that the hollow structure can prevent water vapor from corroding the photovoltaic cell 24 and encapsulation materials arranged between the front plate 22 and the photovoltaic cell 24 or between the back plate 23 and the photovoltaic cell 24, and the service life of the photovoltaic module 10 is prolonged. Meanwhile, no edge sealing adhesive is arranged between the front plate 22 and the back plate 23, so that the cost of the photovoltaic module 10 is saved, and the edge sealing adhesive is arranged at the opposite side edges of the front plate 22 and the back plate 23 and is mainly used for preventing water vapor from entering the photovoltaic cell 20 from the packaging material between the front plate 22 and the back plate 23 to corrode the photovoltaic cell 25.

EXAMPLE III

The utility model discloses a photovoltaic module, as shown in fig. 4, the difference is in photovoltaic module 10 including terminal box 80 with the disclosed photovoltaic module 10 of embodiment 2, and terminal box 80 is connected with the lead-out wire 21 electricity. The junction box 80 is hermetically bonded to the side of the encapsulation unit 30 remote from the photovoltaic unit 20. The junction box 80 is used for electrical connection between a plurality of photovoltaic modules 10.

Further, the orthographic projection of the pad block 50 on the encapsulation unit 30 is located within the range of the orthographic projection of the junction box 80 on the encapsulation unit 30. The orthographic projection of the cushion block 50 on the packaging unit 30 is located in the range of the orthographic projection of the junction box 80 on the packaging unit 30, and the junction box 80 can effectively shield the cushion block 50 and beautify the appearance of the photovoltaic assembly 10.

It should be noted that, as shown in fig. 5, since the junction box 80 is sealed and adhered to the packaging unit 30, the first sealant filled in the first lead-out hole 31 and the second lead-out hole 51 can be omitted due to the good sealing property between the junction box 80 and the packaging unit 30, thereby reducing the cost of the photovoltaic module 10.

In the description of the present invention, it is to be understood that the terms "connected" and "coupled," unless otherwise specified, include both direct and indirect connections.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Although the embodiments of the present invention have been described above, the description is only for the convenience of understanding the present invention, and the present invention is not limited thereto. Those skilled in the art can make various changes, modifications and alterations to the embodiments without departing from the spirit and scope of the present invention, and it is intended to claim all such changes, modifications and alterations as fall within the true spirit and scope of the invention.

Claims (10)

1. A photovoltaic module, comprising:

a photovoltaic unit (20);

the packaging unit (30) is arranged opposite to the photovoltaic unit (20) and is provided with a first lead-out hole (31);

a spacer frame (40) disposed between the photovoltaic unit (20) and the encapsulation unit (30) and hermetically connected with the photovoltaic unit (20) and the encapsulation unit (30);

cushion (50), set up in photovoltaic unit (20) with between encapsulation unit (30) and be located spacer frame (40) inboard, respectively with photovoltaic unit (20) with encapsulation unit (30) sealing contact, cushion (50) seted up with hole (51) are drawn forth to the second that first hole (31) communicate is drawn forth, photovoltaic unit (20) dorsal lead-out wire (21) process is drawn forth to the second hole (51) and is stretched out first hole (31) of drawing forth.

2. Photovoltaic module according to claim 1, characterized in that the photovoltaic unit (20) comprises a back sheet (23), a photovoltaic cell (24) and a front sheet (22) arranged in succession in a direction away from the encapsulation unit (30).

3. The photovoltaic module according to claim 2, characterized in that the orthographic projection of the photovoltaic cell (24) and the backsheet (23) on the front sheet (22) is located inside the edge of the front sheet (22), the spacer frame (40) being sealingly connected to the back side surface of the front sheet (22).

4. The photovoltaic module according to claim 2 or 3, wherein the back sheet (23) is provided with a third lead-out hole (231) for the lead-out wire (21) to pass through, and an orthographic projection of the third lead-out hole (231) on the back sheet (23) is within an orthographic projection range of the second lead-out hole (51) on the back sheet (23).

5. The photovoltaic module according to claim 4, characterized in that the first exit hole (31), the second exit hole (51) and the third exit hole (231) are arranged coaxially.

6. The photovoltaic module according to claim 1, wherein the second lead-out hole (51) is filled with a first sealant (60), or both the second lead-out hole (51) and the first lead-out hole (31) are filled with a first sealant (60).

7. The photovoltaic module of claim 1, wherein the spacer (50) is cylindrical.

8. Photovoltaic module according to claim 7, characterized in that the wall thickness of the spacer (50) is not less than 5 mm.

9. Photovoltaic module according to claim 1, characterized in that the encapsulation unit (30) is a single-layer glass or a laminated glass.

10. The pv module according to claim 1, wherein the pv module (10) further comprises a junction box (80), the junction box (80) is disposed on a side of the encapsulation unit (30) away from the pv unit (20), and an orthographic projection of the spacer (50) on the encapsulation unit (30) is located within a range of an orthographic projection of the junction box (80) on the encapsulation unit (30).

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