CN217822828U - Photovoltaic module with double-spliced front plate - Google Patents

Abstract

The utility model relates to a photovoltaic module technical field specifically discloses a photovoltaic module with doublet front bezel, include lamination assembly, fix lamination assembly peripheral frame subassembly and establish crosspiece on the frame subassembly, lamination assembly is including folding backplate, first glued membrane, battery cluster, second glued membrane and the front bezel that sets up in proper order, the front bezel includes that two are established side by side glass front bezel on the second glued membrane, two form the buffering gap between the glass front bezel, be equipped with the sealing strip between the buffering gap. This photovoltaic module with double pin front bezel is through two parallel glass front bezel cooperation buffering gaps and sealing strips, enables photovoltaic module and has the advantage of lightweight, high mechanical strength, high anti-wind pressure concurrently.

Description

Photovoltaic module with double-spliced front plate

Technical Field

The utility model relates to a photovoltaic module technical field, concretely relates to photovoltaic module with double pin front bezel.

Background

In recent years, as the size of the silicon cell is increased (such as the area is increased), the size of the photovoltaic module is also increased, and the large-size photovoltaic module becomes one of the main development directions of the photovoltaic module in the future. However, the weight of the large-sized photovoltaic module is also increased continuously, and the heavy photovoltaic module causes inconvenience in transportation and installation, so that the transportation and installation cost is greatly increased; moreover, the requirements of the large-sized photovoltaic module on the mechanical strength and the wind pressure resistance are also more strict, so for the large-sized photovoltaic module, the thickness of the glass front plate is generally required to be increased to ensure the mechanical strength and the wind pressure resistance of the glass front plate and the whole photovoltaic module, however, the large-sized and thick glass front plate further increases the weight of the photovoltaic module, further causing the photovoltaic module to be too heavy and inconvenient to carry and install, and at this time, the glass front plate needs to be properly thinned to reduce the weight to ensure the convenience of carrying and installing. Therefore, it is difficult to achieve excellent mechanical strength, wind pressure resistance, and lightweight properties for the existing large-sized photovoltaic module.

The existing photovoltaic frame, such as the photovoltaic frame and the photovoltaic module provided by publication number CN213125954U, is provided with a cross bar which can provide support for the photovoltaic laminate, and the load of the photovoltaic laminate can be increased by using the frame and the cross bar in a matching manner; however, the technical problem that the existing large-sized photovoltaic module is difficult to combine excellent mechanical strength, wind pressure resistance and light weight cannot be solved, so that carrying and installation of the large-sized photovoltaic module are influenced, even the use of the large-sized photovoltaic module can be greatly limited, and the rapid development of the large-sized photovoltaic module is not favorably limited.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's is not enough, provides a photovoltaic module with double pin front bezel to it is difficult to compromise excellent mechanical strength, anti-wind pressure performance and lightweight defect to overcome current large-size photovoltaic module.

Based on this, the utility model discloses a photovoltaic module with doublet front bezel, include the lamination subassembly, fix the peripheral frame subassembly of lamination subassembly and establishing crosspiece on the frame subassembly, the lamination subassembly is including folding backplate, first glued membrane, battery cluster, second glued membrane and the front bezel that sets up in proper order, the front bezel includes that two are established side by side glass front bezel on the second glued membrane, two form the buffering gap between the glass front bezel, be equipped with the sealing strip between the buffering gap.

Preferably, the projection of the buffer slot on the back plate is opposite to the crosspiece.

Preferably, the rails are bonded to the back plate.

Preferably, the two ends of the crosspiece are snap-fitted to the frame assembly.

Preferably, the sealing strip is formed by injecting sealing glue into a buffer gap.

Preferably, the sealing strip is a deformable flexible sealing strip.

Preferably, the width of the buffer gap is 3-8mm, more preferably 4-5mm.

Preferably, the glass front plate is rectangular glass, and the length ratio of two adjacent sides in the rectangular glass is 0.5-2.

Preferably, the thickness of the glass front plate is 1.5-5mm.

Preferably, the frame assembly is a rectangular frame assembly and comprises 4 frame strips connected end to end in sequence.

Preferably, the frame assembly is a rectangular frame assembly, the rectangular frame assembly includes two opposite long frame strips and two short frame strips respectively connecting two end portions of the long frame strips, and two end portions of the crosspiece are respectively connected with the two long frame strips.

Preferably, the crosspiece is provided with a wire passing hole.

Further preferably, a junction box fixing position is arranged on the crosspiece, and the junction box fixing position is opposite to the wire through hole.

Compared with the prior art, the utility model discloses at least, including following beneficial effect:

in the photovoltaic module of the utility model, the sealing strip can ensure the sealing performance between the two glass front plates, and the front plates are arranged into two parallel glass front plates, thus, the area of a single glass front plate is reduced by half for the photovoltaic module with the same area size; the applicant found that, for a glass front plate with the same thickness, the mechanical strength of a single glass front plate with a small area (for example, the area is 1 m × 1 m) is increased by more than 60% compared with that of a single glass front plate with a large area (for example, the area is 1 m × 2 m); for the glass front plates with the same mechanical strength, the thickness of the single glass front plate with a small area is reduced by at least half compared with that of the single glass front plate with a large area; therefore, the area of the single glass front plate is reduced by half, the thickness of the single glass front plate with small area can be reduced to realize the light weight of the photovoltaic module on the premise of ensuring that the mechanical strength of the single glass front plate with small area is not changed, and the photovoltaic module is more convenient to carry and install.

And when external wind force acts on the glass front plate, the distance from the stress center to the edge distance of the small-area single glass front plate is correspondingly shortened, so that the small-area single glass front plate is not easy to deform and bend under the action of the external wind force, and the wind pressure resistance of the small-area single glass front plate is increased.

In addition, the buffering gap can provide a buffering effect for the two parallel glass front plates, so that the mechanical strength and the wind pressure resistance of the two parallel glass front plates are prevented from being influenced by mutual collision.

In conclusion, the photovoltaic module has the advantages of light weight, high mechanical strength and high wind pressure resistance by matching the two parallel glass front plates with the buffer gap and the sealing strip.

Drawings

Fig. 1 is an exploded schematic view of a photovoltaic module with a double-spliced front plate according to the embodiment after a laminated module is removed.

Fig. 2 is a top view of the photovoltaic module with the double-split front plate of the present embodiment with the laminate assembly removed.

Fig. 3 is a schematic cross-sectional structure diagram of a left end part of the photovoltaic module with the double-spliced front plate according to the embodiment.

Fig. 4 is a schematic structural diagram of a longitudinal section of a photovoltaic module with a double-spliced front plate according to the embodiment.

Fig. 5 is a perspective view of a right part of a rung according to the embodiment.

FIG. 6 is a top view of a portion of the left end of one of the rungs of this embodiment.

Fig. 7 is a schematic cross-sectional structure view of a left end part of another photovoltaic module with a double-spliced front plate according to the embodiment.

Fig. 8 is a schematic structural diagram of a longitudinal section of another photovoltaic module with a double-spliced front plate according to the embodiment.

FIG. 9 is a perspective view of a right end portion of another rung of this embodiment.

FIG. 10 is a top view of a portion of the left end of another rung of this embodiment.

The reference numbers illustrate: a laminate assembly 1; a back plate 11; a glass front plate 12; a buffer gap 121; a battery string 13; a sealing strip 2; a frame component 3; a long frame strip 31; a card slot 311; a short frame strip 32; corner connector 33; a crosspiece 4; a snap projection 41; a terminal block fixing location 42; a wire passing hole 43; a recess 44; a structural adhesive layer 5; and a terminal box 6.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the following detailed description.

Examples

The photovoltaic module with the double-spliced front plate of the embodiment, referring to fig. 1-3, comprises a laminated module 1, a frame module 3 fixed on the periphery of the laminated module 1, and a crosspiece 4 arranged on the frame module 3.

Wherein, frame subassembly 3 is the rectangle frame subassembly, and this rectangle frame subassembly includes 4 frame strips of end to end connection in proper order. The material of the frame component 3 is preferably steel, the frame component 3 made of the steel is manufactured by adopting a cold roll forming process, and compared with the conventional aluminum material, the mechanical strength and the wind pressure resistance of the frame component 3 made of the steel are higher, the frame component is not easy to deform, and the frame component is more suitable for being applied to the large-size laminated component 1.

In practical applications, referring to fig. 1-2, the frame assembly 3 is preferably a rectangular frame assembly, which includes two long frame strips 31 disposed opposite to each other, one short frame strip 32 connecting one end of the two long frame strips 31, and another short frame strip 32 connecting the other end of the two long frame strips 31, so that the long frame strips 31 and the short frame strips 32 are sequentially connected end to form the rectangular frame assembly.

Further, referring to fig. 1-2, the frame assembly 3, such as a rectangular frame assembly, is further provided with 4 corner connectors 33, and the long frame strips 31 and the short frame strips 32 connected in the end-to-end manner are fixedly connected through the corner connectors 33, so as to ensure the firmness and stability of the assembled frame assembly 3.

Referring to fig. 3 and 7, the lamination assembly 1 includes a back plate 11, a first adhesive film, a battery string 13, a second adhesive film and a front plate, which are stacked in sequence, the first adhesive film in the lamination assembly 1 is used for bonding the back plate 11 and the battery string 13, and the second adhesive film is used for bonding the battery string 13 and the front plate, and both the first adhesive film and the second adhesive film refer to the prior art, so that the description is not repeated.

For a large-sized photovoltaic module, the thickness of the glass front plate 12 is usually required to be increased to ensure the mechanical strength and the wind pressure resistance of the glass front plate 12 and the whole photovoltaic module, however, the large-sized and thick glass front plate 12 increases the weight of the photovoltaic module, which causes inconvenience in carrying and installing the photovoltaic module due to excessive weight, and the glass front plate 12 needs to be appropriately thinned to ensure convenience in carrying and installing the photovoltaic module. Therefore, the existing large-size photovoltaic module cannot have excellent wind pressure resistance and the convenience of carrying and installation.

Based on this, in the photovoltaic module of the present embodiment, referring to fig. 4 and 8, the front plate includes two glass front plates 12 juxtaposed on the second adhesive film, a buffer gap 121 is formed between the two glass front plates 12, and a sealing strip 2 is disposed between the buffer gap 121.

The sealing strip 2 is formed by injecting a sealing glue into the buffer gap 121 to ensure the sealing performance between the two glass front plates 12, so as to prevent foreign objects such as rain and dust from entering the interior of the laminated assembly 1 to affect the normal use of the laminated assembly 1.

Further, sealing strip 2 is the flexible sealing strip of deformability, has certain elastic deformation like this sealing strip 2, receives like the exogenic action of wind pressure at two glass front panels 12 like this, and this sealing strip 2 can utilize its flexible deformation or elastic deformation to provide certain cushioning effect for two glass front panels 12, further improves the anti-wind pressure performance of these two glass front panels 12.

In the photovoltaic module, the front plate is arranged into two parallel glass front plates 12, so that for the photovoltaic module with the same area size, the area of a single glass front plate 12 is reduced by half; for example, the area of the conventional glass front plate 12 is 1 m × 2 m, and the area of each glass front plate 12 in the photovoltaic module is 1 m × 1 m. The applicant tests and finds that, for a glass front plate 12 with the same thickness, the mechanical strength of a single glass front plate 12 with a small area (for example, 1 m × 1 m) is increased by more than 60% compared with that of a single glass front plate 12 with a large area (for example, 1 m × 2 m); for a glass front plate 12 with the same mechanical strength, a small area of the single glass front plate 12 (e.g., 1 m × 1 m) is thinner than a large area of the single glass front plate 12 (e.g., 1 m × 2 m) by at least half. Therefore, in the photovoltaic module of this embodiment, since the area of the single glass front plate 12 is half smaller, on the premise of ensuring that the mechanical strength of the single glass front plate 12 with a small area is not changed, the thickness of the single glass front plate 12 with a small area can be reduced to reduce the weight of the photovoltaic module, that is, the photovoltaic module is light in weight, so that the photovoltaic module is more convenient to carry and install.

Moreover, after the two parallel glass front plates 12 are arranged, because the area of the single glass front plate 12 is half smaller, when the external wind force acts on the single glass front plate, the distance from the stress center of the small-area single glass front plate 12 to the edge distance is correspondingly shortened, so that the small-area single glass front plate 12 is not easy to deform and bend under the action of the external wind force, and the wind pressure resistance of the small-area single glass front plate 12 is increased; in addition, the buffer gap 121 is formed between the two glass front plates 12, so that under the action of external wind, the buffer gap 121 can provide a buffer effect for the two parallel glass front plates 12 so as to prevent the two parallel glass front plates 12 from colliding with each other to influence the mechanical strength and the wind pressure resistance of the two parallel glass front plates 12 and the whole photovoltaic module. Therefore, in the embodiment, the two parallel glass front plates 12 are matched with the buffer gap 121 and the sealing strip 2, so that the photovoltaic module has the advantages of light weight, high mechanical strength and high wind pressure resistance. Specifically, the thickness of the glass front plate 12 is 1.5 to 5mm.

To further reduce the weight of the photovoltaic module, the backsheet 11 of the photovoltaic module is preferably a lightweight backsheet, rather than heavy glass.

Further, referring to fig. 2-4 and 7-8, on the premise of arranging two glass front plates 12 and a buffering gap 121 which are arranged side by side, in order to further improve the mechanical strength of the photovoltaic module, a crosspiece 4 with a hollow structure is arranged, and the projection of the crosspiece 4 is opposite to the projection of the buffering gap 121, and the crosspiece 4 is bonded with the back plate 11, so that the crosspiece 4 can provide mechanical support for the two glass front plates 12 which are arranged side by side and the whole photovoltaic module; the material of the frame component 3 is replaced by steel, and the mechanical strength of the steel frame component 3 is improved to share a part of the mechanical strength of the glass front plate 12; like this, crosspiece 4 and steel's frame subassembly 3's cooperation, on the one hand, can share partial mechanical strength for glass front bezel 12, and then can improve whole photovoltaic module's mechanical strength, on the other hand makes the thickness attenuate of glass front bezel 12 possible, and hollow structure's crosspiece 4's weight is little, and it is more convenient further to make photovoltaic module's transport and installation. Moreover, since both glass and aluminum are high energy consumption products, thinning the glass front plate 12 and replacing the frame assembly 3 with steel also reduces energy consumption. Therefore, in the embodiment, the photovoltaic module can be further optimized by matching the two glass front plates 12 which are arranged in parallel with the buffer gap 121, the crosspiece 4 and the frame component 3 made of steel, so that the performance of the photovoltaic module in the aspects of light weight, high mechanical strength, high wind pressure resistance and low energy consumption is further improved.

In practice, the glass front plate 12 is a rectangular glass, and the ratio of the lengths of two adjacent sides in the rectangular glass is 0.5 to 2.

Referring to fig. 2, 4-6 and 10, the crosspiece 4 is provided with a junction box fixing location 42 and a wire passing hole 43, the junction box fixing location 42 is arranged opposite to the wire passing hole 43, for example, a junction box fixing location 42 for installing the junction box 6 is arranged in the crosspiece 4, and the wire passing hole 43 is formed in the junction box fixing location 42, so that an electric wire connected to the junction box 6 can be led into the outside of the photovoltaic module after passing through the wire passing hole 43, and then is electrically connected with other parts outside the photovoltaic module. The arrangement positions of the buffer gap 121 and the crosspiece 4 are exactly the same as the installation position of the junction box 6, and the installation position of the junction box 6 does not have the photovoltaic power generation function originally but realizes the electrical connection, so that the power generation effect of the photovoltaic module cannot be influenced by adding the crosspiece 4. The width of the buffer gap 121 is preferably 3-8mm, more preferably 4-5mm.

In particular, the two ends of the crosspiece 4 are snap-fitted with the edge frame assembly 3, in practice, the two ends of the crosspiece 4 are snap-fitted with two elongated frame strips 31, respectively, see fig. 2-3, 7 and 9. For example, the long frame strip 31 is provided with a slot 311, and correspondingly, the two ends of the rung 4 are provided with the locking protrusions 41, and the two ends of the rung 4 are respectively connected with the two long frame strips 31 by the locking protrusions 41 and the slot 311, so that the installation and the disassembly of the rung 4 are more convenient. Of course, the locking protrusions 41 may be further disposed in the long frame strips 31, and the locking grooves 311 are correspondingly disposed at the two end portions of the crosspiece 4, so as to achieve the locking engagement between the two end portions of the crosspiece 4 and the two long frame strips 31.

In fact, referring to fig. 4, in order to further improve the mechanical strength of the photovoltaic module, the structural adhesive layer 5 formed by the structural adhesive with high strength and large load is used between the crosspiece 4 and the back plate 11 to achieve bonding.

In an example of this embodiment, referring to fig. 3 to 6, the crosspiece 4 is configured as a hollow box-shaped structure, two ends of the crosspiece 4 of the box-shaped structure are clamped with the long frame strip 31, a plurality of terminal box fixing positions 42 arranged in parallel are spaced inside the crosspiece 4, and the bottom and/or bottom of the terminal box fixing positions 42 is provided with a wire passing hole 43.

In another example of this embodiment, referring to fig. 7-10, the crosspiece 4 is preferably configured in an inverted "n" shape, two ends of the crosspiece 4 are engaged with the long frame 31, a plurality of terminal box fixing locations 42 are spaced inside the crosspiece 4 and arranged in parallel, and a wire passing hole 43 is opened at the bottom of the terminal box fixing locations 42. In addition, in order to further improve the adhesion between the structural adhesive layer 5 and the crosspiece 4, it is preferable to provide a groove 44 (as shown in fig. 8) on the crosspiece 4 for retaining the adhesive, so that the structural adhesive flows into the groove 44, and thus the cured structural adhesive layer 5 forms a protrusion matching the groove 44 to strengthen the connection between the structural adhesive layer 5 and the crosspiece 4.

While the preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the invention.

The technical solution provided by the present invention is introduced in detail, and the principle and the implementation of the present invention are explained by applying specific examples, and the explanation of the above examples is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.

Claims (13)

1. The utility model provides a photovoltaic module with double-pin front bezel, includes the lamination subassembly, fixes the peripheral frame subassembly of lamination subassembly and establishing crosspiece on the frame subassembly, the lamination subassembly is including folding backplate, first glued membrane, battery cluster, second glued membrane and the front bezel that set up in proper order, its characterized in that, the front bezel includes that two are established side by side glass front bezel on the second glued membrane, two form the buffering gap between the glass front bezel, be equipped with the sealing strip between the buffering gap.

2. The photovoltaic module with the double-spliced front plate as claimed in claim 1, wherein a projection of the buffer gap on the back plate is opposite to the crosspiece.

3. The pv module with dual front tiles according to claim 1 wherein the rails are bonded to the backsheet.

4. The photovoltaic module with the double-spliced front plate as claimed in claim 1, wherein two end portions of the crosspiece are in clamping fit with the frame assembly.

5. The photovoltaic module with the double-spliced front plate as claimed in claim 1, wherein the sealing strip is formed by injecting a sealant into a buffer gap.

6. The photovoltaic module with the double-spliced front plate as claimed in claim 1, wherein the sealing strip is a deformable flexible sealing strip.

7. The photovoltaic module with the double-spliced front plate as claimed in claim 1, wherein the width of the buffer gap is 3-8mm.

8. The photovoltaic module with the double-spliced front plate as claimed in claim 1, wherein the glass front plate is rectangular glass, and the length ratio of two adjacent edges in the rectangular glass is 0.5-2.

9. The photovoltaic module with the double-spliced front plate as claimed in claim 1, wherein the glass front plate has a thickness of 1.5-5mm.

10. The photovoltaic module with the double-spliced front plate as claimed in claim 1, wherein the frame assembly is a rectangular frame assembly and comprises 4 frame strips connected end to end in sequence.

11. The photovoltaic module with the double-spliced front plate as claimed in claim 1, wherein the frame assembly is a rectangular frame assembly, the rectangular frame assembly comprises two opposite long frame strips and two short frame strips respectively connecting two end portions of the long frame strips, and two end portions of the crosspiece are respectively connected with the two long frame strips.

12. The photovoltaic module with the double-spliced front plate as claimed in claim 1, wherein the crosspiece is provided with a wire through hole.

13. The pv module with dual front panels as claimed in claim 12, wherein the cross members have terminal box fixing portions opposite to the wire holes.

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