CN215186610U - Photovoltaic module - Google Patents

Abstract

The utility model discloses a photovoltaic module, include: a front transparent cover plate; the back transparent cover plate is arranged on one side of the front transparent cover plate in the thickness direction; the photovoltaic cell layer is arranged between the front transparent cover plate and the back transparent cover plate and comprises a plurality of cell strings arranged along a first direction, and each cell string comprises a plurality of cell pieces arranged along a second direction perpendicular to the first direction; and the reinforcing member is arranged on one side of the back transparent cover plate far away from the photovoltaic cell layer. According to the utility model discloses a photovoltaic module, through setting up the reinforcement in the back transparent cover plate one side of keeping away from the photovoltaic cell layer, can promote photovoltaic module's load-carrying capacity to can avoid photovoltaic module to take place deformation, and the difficult lobe of a leaf that takes place of battery piece, guarantee photovoltaic module's output simultaneously.

Description

Photovoltaic module

Technical Field

The utility model belongs to the technical field of the photovoltaic technique and specifically relates to a photovoltaic module is related to.

Background

In the related art, as the power demand of users on the photovoltaic module is increasing, the size of the photovoltaic module is also increasing. However, the large-sized photovoltaic module has poor load-carrying capacity, which leads to easy deformation of the photovoltaic module, and further leads to cracking of the cell in the photovoltaic module, which affects the output power of the photovoltaic module.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide a photovoltaic module can improve photovoltaic module's load-carrying capacity to can avoid photovoltaic module to take place deformation, and guarantee photovoltaic module's output.

According to the utility model discloses photovoltaic module, include: a front transparent cover plate; the back transparent cover plate is arranged on one side of the front transparent cover plate in the thickness direction; the photovoltaic cell layer is arranged between the front transparent cover plate and the back transparent cover plate and comprises a plurality of cell strings arranged along a first direction, and each cell string comprises a plurality of cell pieces arranged along a second direction perpendicular to the first direction; and the reinforcing member is arranged on one side of the back transparent cover plate far away from the photovoltaic cell layer.

According to the utility model discloses photovoltaic module, through setting up the reinforcement in the one side of keeping away from the photovoltaic cell layer of back transparent cover, can promote photovoltaic module's load-carrying capacity to can avoid photovoltaic module to take place deformation, and the difficult lobe of a leaf that takes place of battery, guarantee photovoltaic module's output simultaneously.

According to some embodiments of the present invention, the reinforcing member extends along the first direction, and the reinforcing member is located between two adjacent battery pieces in the second direction.

According to some embodiments of the present invention, the battery string comprises a plurality of battery cells arranged at intervals along the second direction, and the reinforcing member is located at two adjacent gaps between the battery cells.

According to some embodiments of the present invention, two adjacent have a first reflective strip between the battery cell, the width of reinforcement is less than or equal to the width of first reflective strip.

According to some embodiments of the invention, the reinforcement member is formed with at least one groove; the photovoltaic module further includes: at least one junction box, the junction box is established in the recess.

According to some embodiments of the invention, the groove is formed by a portion of a side surface of the reinforcement that is away from the back transparent cover plate being recessed towards the direction of the photovoltaic cell layer, the depth of the groove being greater than the height of the junction box.

According to some embodiments of the invention, the number of battery cells is two, and the number of reinforcements is one.

According to some embodiments of the present invention, the battery string is a plurality of battery cells arranged at intervals along the second direction, and the reinforcing member is located at two adjacent ones of the battery cells in the gap between the battery pieces.

According to some embodiments of the present invention, the battery unit comprises two adjacent battery pieces, a second light reflecting strip is arranged between the battery pieces, and the width of the reinforcing member is less than or equal to the width of the second light reflecting strip.

According to some embodiments of the invention, each said reinforcement has a width W, wherein W satisfies: w is less than or equal to 8 mm.

According to some embodiments of the present invention, a side surface of each of the reinforcing members adjacent to the back transparent cover plate is coated with a reflective layer.

According to some embodiments of the invention, the reinforcement is a plurality of, a plurality of the reinforcement is along the even interval setting of second direction.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic view of a photovoltaic module according to an embodiment of the present invention;

fig. 2 is a schematic view of a reinforcement and junction box of a photovoltaic module according to an embodiment of the present invention;

fig. 3 is a schematic view of a photovoltaic module according to another embodiment of the present invention.

Reference numerals:

100: a photovoltaic module;

1: a back transparent cover plate; 2: a photovoltaic cell layer; 21: a battery string;

211: a battery piece; 22: a battery cell; 3: a reinforcement; 31: a groove;

4: a junction box; 5: and (5) a frame.

Detailed Description

A photovoltaic module 100 according to an embodiment of the present invention is described below with reference to fig. 1-3.

As shown in fig. 1 to 3, a photovoltaic module 100 according to an embodiment of the present invention includes a front transparent cover plate (not shown), a back transparent cover plate 1, a photovoltaic cell layer 2, and at least one reinforcing member 3.

Specifically, the back transparent cover 1 is provided on one side in the thickness direction of the front transparent cover. The photovoltaic cell layer 2 is provided between the front transparent cover plate and the back transparent cover plate 1, the photovoltaic cell layer 2 includes a plurality of cell strings 21 arranged in a first direction (for example, up-down direction in fig. 1), and each cell string 21 includes a plurality of cell pieces 211 arranged in a second direction (for example, left-right direction in fig. 1) perpendicular to the first direction. In the description of the present invention, "a plurality" means two or more.

For example, in the example of fig. 1 and 3, the photovoltaic cell layer 2 may include six cell strings 21, and each cell string 21 may include ten cell pieces 211, which may effectively ensure the output power of the photovoltaic module 100. Wherein, through setting up photovoltaic cell layer 2 between positive transparent cover plate and back transparent cover plate 1, can separate photovoltaic cell layer 2 and external environment effectively to can reduce steam and external environment to photovoltaic cell layer 2's influence effectively, and then can guarantee photovoltaic module 100's reliability. It is understood that the specific number of the battery strings 21 and the battery sheets 211 can be specifically set according to actual requirements to better meet the actual application.

The reinforcing member 3 is arranged on one side of the back transparent cover plate 1 far away from the photovoltaic cell layer 2. From this, reinforcement 3 can be to the whole supporting role that plays of front transparent cover, photovoltaic cell layer 2 and back transparent cover 1 to can improve photovoltaic module 100's structural strength, and then can promote photovoltaic module 100's load-carrying capacity. Compared with the existing photovoltaic module, on one hand, the photovoltaic module 100 can be prevented from deforming, and the cell 211 is not easy to split; on the other hand, the double-sided rate of the photovoltaic module 100 is ensured, so that the output power of the photovoltaic module 100 is ensured.

According to the utility model discloses photovoltaic module 100 through set up the reinforcement 3 in the back transparent cover plate 1 one side of keeping away from photovoltaic cell layer 2, can promote photovoltaic module 100's load-carrying capacity to can avoid photovoltaic module 100 to take place deformation, and the difficult lobe of a leaf that takes place of battery piece 211, guarantee photovoltaic module 100's output simultaneously.

According to some embodiments of the present invention, referring to fig. 1 and 3, the reinforcement member 3 extends along a first direction, and the reinforcement member 3 is located between two adjacent battery pieces 211 in a second direction. Therefore, the gap between two adjacent battery pieces 211 is effectively utilized, the structure of the photovoltaic module 100 is more compact, meanwhile, the reinforcing member 3 can be prevented from shielding the battery pieces 211, and the output power of the photovoltaic module 100 is ensured.

Further, the plurality of battery strings 21 constitute a plurality of battery cells 22 arranged at intervals in the second direction, and the reinforcing member 3 is located in a gap between two adjacent battery cells 22. For example, in the example of fig. 1, there are two battery cells 22, one reinforcing member 3, and the two battery cells 22 are spaced apart from each other in the second direction. Since the gap between two battery cells 22 is larger than the gap between two adjacent battery sheets 211, the installation of the reinforcing member 3 is facilitated by disposing the reinforcing member 3 between two battery cells 22, and at the same time, the reinforcing member 3 can be designed to be a large-sized reinforcing member 3, which can further improve the structural strength of the photovoltaic module 100, thereby ensuring that the photovoltaic module 100 can have better load-carrying capacity.

Furthermore, a first reflective strip is arranged between two adjacent battery units 22, and the width of the reinforcing member 3 is smaller than or equal to that of the first reflective strip. Referring to fig. 1 and 2, a first light reflecting strip may be formed on one side of the back transparent cover plate 1 adjacent to the photovoltaic cell layer 2, the first light reflecting strip is opposite to the gap between two adjacent battery cells 22, and the width of the first light reflecting strip is equal to the distance between two adjacent battery cells 22. From this, through the width that makes the width less than or equal to first reflection of light strip of reinforcement 3, can avoid reinforcement 3 to shelter from battery piece 211, first reflection of light strip can increase the reflection of light of back transparent cover 1 simultaneously for photovoltaic cell layer 2 can the light of the reflection of the first reflection of light strip of secondary absorption, thereby makes photovoltaic cell layer 2 have higher photoelectric conversion efficiency, and then can increase photovoltaic module 100's output.

In some alternative embodiments, the reinforcement member 3 is formed with at least one recess 31. Photovoltaic module 100 further includes at least one junction box 4, junction box 4 being disposed within recess 31. For example, in the example of fig. 1 and 2, the photovoltaic assembly 100 includes three junction boxes 4, the three junction boxes 4 being spaced apart from each other along the first direction. Three grooves 31 are formed on the reinforcing member 3, the three grooves 31 are arranged at intervals along the length direction of the reinforcing member 3, and each junction box 4 is matched in the corresponding groove 31. Therefore, the structure of the photovoltaic module 100 can be more compact, and the groove 31 can protect the junction box 4, so that the junction box 4 can be prevented from being damaged during installation and use, and the service life of the junction box 4 is prolonged.

Further, referring to fig. 2, the groove 31 is formed by recessing a portion of the surface of the side of the reinforcement 3 remote from the rear transparent cover sheet 1 in a direction toward the photovoltaic cell layer 2. The depth of the recess 31 is greater than the height of the terminal block 4. So set up, the installation back, the one side surface of keeping away from back transparent cover 1 of terminal box 4 is less than the one side surface of keeping away from back transparent cover 1 of reinforcement 3 to recess 31 can play the effect of comprehensive protection to terminal box 4 wherein, can further avoid terminal box 4 to receive the harm when installation and use, has further prolonged the life of terminal box 4. Alternatively, the groove 31 may be formed by stamping, welding, or cutting. But is not limited thereto.

In other alternative embodiments, as shown in fig. 3, the reinforcing member 3 is located in the gap between two adjacent battery sheets 211 in the battery unit 22. So set up, effectively utilized the clearance between two adjacent battery pieces 211, made photovoltaic module 100's structure compacter equally, and can improve photovoltaic module 100's structural strength equally to can promote photovoltaic module 100's load-carrying capacity.

Further, a second light reflecting strip is arranged between two adjacent battery sheets 211 in the battery unit 22, and the width of the reinforcing member 3 is smaller than or equal to the width of the second light reflecting strip. Referring to fig. 3, second light-reflecting stripes may be provided on the side of the back transparent cover plate 1 adjacent to the photovoltaic cell layer 2, and the second light-reflecting stripes may extend in the first direction. The reinforcing member 3 is located the one side of the transparent apron 1 of back far away from photovoltaic cell layer 2, and reinforcing member 3 is relative with the second reflection of light strip. From this, can avoid reinforcement 3 to shelter from battery piece 211, the reflection of light of the transparent apron 1 in the back can be increased to the reflection of light strip of second simultaneously for photovoltaic cell layer 2 can the secondary absorption light that the reflection of light strip of second, thereby can guarantee that photovoltaic cell layer 2 has higher photoelectric conversion efficiency, and then can increase photovoltaic module 100's output.

In some alternative embodiments, each stiffener 3 has a width W, where W satisfies: w is less than or equal to 8 mm. When W is greater than 8mm, the width of each stiffener 3 is larger, the width of each stiffener 3 may be larger than the gap between two adjacent battery pieces 211 in the battery unit 22, and at this time, the stiffener 3 may block the battery piece 211 adjacent to the stiffener 3 in the battery unit 22, so that the photovoltaic module 100 is prone to generate a hot spot effect, and the output power of the photovoltaic module 100 is affected. Thus, by making W satisfy: w is less than or equal to 8mm, the width of the reinforcing member 3 can be ensured to be less than or equal to that of the second reflective strip, so that the reinforcing member 3 can be prevented from shielding the cell piece 211, and the output power of the photovoltaic module 100 can be ensured.

Optionally, one side surface of each reinforcing member 3 adjacent to the back transparent cover plate 1 is coated with a light reflecting layer. For example, a highly reflective coating (e.g. silver) may be applied to the surface of each stiffener 3 adjacent to the rear transparent cover 1 to provide a light reflecting layer. Therefore, the light reflection of the reinforcing member 3 can be effectively increased, so that the cell piece 211 in the photovoltaic cell layer 2 can secondarily absorb the light reflected by the reinforcing member 3, the photoelectric conversion efficiency of the photovoltaic cell layer 2 can be further improved, and the output power of the photovoltaic module 100 can be further increased.

In some alternative embodiments, the reinforcing member 3 is provided in plurality, and a plurality of reinforcing members 3 may be provided at regular intervals in the second direction. For example, in the example of fig. 3, there are two reinforcing members 3, and each reinforcing member 3 is located between two adjacent battery sheets 211 in the middle of the corresponding battery cell 22. Due to the arrangement, on one hand, the photovoltaic module 100 can be effectively supported, and the structural strength of the photovoltaic module 100 is ensured, so that the loading capacity of the photovoltaic module 100 can be effectively improved; on the other hand, a plurality of reinforcements 3 can guarantee that a plurality of reinforcements 3 can evenly receive the force along second direction evenly distributed, avoid reinforcement 3 to break off, and guaranteed the regularity of photovoltaic module 100 structure. It will be appreciated that the specific number of reinforcing members 3 may be specifically set according to the actual load requirements to better suit the application.

Two stiffeners 3 are shown in fig. 3 for illustrative purposes, but it is obvious to those skilled in the art after reading the technical solution of the present application that the solution can be applied to other number of stiffeners 3, which also falls into the protection scope of the present invention.

According to some embodiments of the present invention, as shown in fig. 1 and 3, the outer peripheral sides of the front transparent cover plate, the photovoltaic cell layer 2, and the back transparent cover plate 1 are provided with a frame 5, and both ends of the length direction of the reinforcing member 3 are respectively connected to the corresponding sides of the frame 5. Thereby, the structural strength of the photovoltaic module 100 can be further improved, so that the photovoltaic module 100 can bear a larger load, and the long-term reliability of the photovoltaic module 100 can be improved.

Other constructions and operations of the photovoltaic module 100 according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

In the description of the present invention, it is to be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being 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.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (12)

1. A photovoltaic module, comprising:

a front transparent cover plate;

the back transparent cover plate is arranged on one side of the front transparent cover plate in the thickness direction;

the photovoltaic cell layer is arranged between the front transparent cover plate and the back transparent cover plate and comprises a plurality of cell strings arranged along a first direction, and each cell string comprises a plurality of cell pieces arranged along a second direction perpendicular to the first direction;

and the reinforcing member is arranged on one side of the back transparent cover plate far away from the photovoltaic cell layer.

2. The photovoltaic module of claim 1, wherein the stiffener extends along the first direction, and the stiffener is located between two adjacent cell pieces in the second direction.

3. The photovoltaic module of claim 2, wherein a plurality of the cell strings form a plurality of cell units arranged at intervals along the second direction, and the reinforcing member is located in a gap between two adjacent cell units.

4. The photovoltaic module of claim 3, wherein a first light reflecting strip is disposed between two adjacent cells, and the width of the reinforcing member is smaller than or equal to the width of the first light reflecting strip.

5. The photovoltaic module of claim 3, wherein the stiffener has at least one recess formed therein;

the photovoltaic module further includes:

at least one junction box, the junction box is established in the recess.

6. The photovoltaic module according to claim 5, wherein the groove is formed by a portion of the surface of the side of the reinforcement facing away from the rear transparent cover plate being recessed in a direction toward the photovoltaic cell layer, and the depth of the groove is greater than the height of the junction box.

7. The photovoltaic module of claim 3, wherein there are two of the cells and one of the stiffeners.

8. The photovoltaic module according to claim 2, wherein a plurality of the cell strings constitute a plurality of cell units arranged at intervals in the second direction, and the reinforcing member is located in a gap between two adjacent ones of the cell units.

9. The photovoltaic module of claim 8, wherein a second light reflecting strip is disposed between two adjacent cells in the cell unit, and the width of the reinforcing member is smaller than or equal to the width of the second light reflecting strip.

10. The photovoltaic module of claim 8, wherein each of the stiffeners has a width W, wherein W satisfies: w is less than or equal to 8 mm.

11. The assembly defined in claim 8 wherein a side surface of each said reinforcement adjacent said transparent back cover is coated with a light reflecting layer.

12. The photovoltaic module of claim 8, wherein the stiffener is a plurality of stiffeners, and the stiffeners are evenly spaced along the second direction.

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