CN219875639U - Frame unit, frame assembly and photovoltaic module - Google Patents

Abstract

The utility model relates to the technical field of solar cells, and particularly provides a frame unit, a frame assembly and a photovoltaic module. The frame unit includes: a first structure; the first structure is provided with a mounting groove which is used for at least accommodating the edge of the solar cell module; the second structure is connected with the first structure to form a connecting wall; the second structure is provided with a supporting part and a reflecting part, and one end of the supporting part is connected with the connecting wall; one end of the reflecting part is connected with one end of the supporting part, which is not connected with the connecting wall, and the other end of the reflecting part is connected with one end of the connecting wall, which is not connected with the reflecting part, and a connecting groove is formed between the supporting part and the reflecting part at least partially in a hollow mode. The frame unit reduces the base, and avoids shielding of the frame unit on the back of the solar cell module; meanwhile, the light irradiated to the reflecting part of the second structure by the incident light can be directly reflected to the back surface of the solar cell module, so that the utilization rate of the incident light is improved, and the back surface power of the solar cell module is improved.

Description

Frame unit, frame assembly and photovoltaic module

Technical Field

The utility model relates to the technical field of solar cells, in particular to a frame unit, a frame assembly and a photovoltaic module.

Background

Solar energy is a clean energy source, and the most common energy source mode for utilizing solar energy at present is a photovoltaic cell. Photovoltaic cells collect solar light over a large area and convert the light energy into electrical energy through the photoelectric effect. To receive sunlight in a large area, the ground is inevitably occupied, and the ground is shaded. With the development of the photovoltaic industry, high-quality photovoltaic land is less and less, and the market segment is also more and more emphasized, and in some special installation scenes, such as intelligent farm guardrails, expressway fences, sound insulation walls and the like, the photovoltaic modules are required to be installed in an oriented and vertical mode, the front and the back of the modules are directly received in turn in the morning or in the evening, and the efficient utilization of different faces to different time periods is realized.

For a double-sided power generation photovoltaic module, when the front power of the module is the same, the higher the double-sided rate of the module (back power of the module/front power of the module) is, the higher the generated energy of the photovoltaic system is.

At present, the frame unit is not friendly to the double-sided rate of the solar cell module, and is mainly reflected in that part of the frame unit shields the back of the solar cell module, and light rays entering the frame unit cannot reach the back of the solar cell module, so that the back power of the solar cell module is low, and the double-sided rate is influenced.

Disclosure of Invention

Therefore, the technical problem to be solved by the utility model is to overcome the defect of low back power of the solar cell module in the prior art, so as to provide a frame unit, a frame assembly and a photovoltaic module.

The utility model provides a frame unit, comprising: the solar cell module comprises a first structure, a second structure and a third structure, wherein the first structure is provided with a mounting groove which is used for accommodating at least the edge of a solar cell module; a second structure connected to the first structure to form a connecting wall; the second structure is provided with a supporting part and a reflecting part, and one end of the supporting part is connected with the connecting wall; one end of the reflecting part is connected with one end of the supporting part, which is not connected with the connecting wall, and the other end of the reflecting part is connected with one end of the connecting wall, which is not connected with the reflecting part, and a connecting groove is formed between the supporting part and the reflecting part at least partially in a hollow mode.

Optionally, the connecting wall forms a right angle with the supporting part, and an included angle of 20-60 degrees is formed between a connecting line between two ends of the reflecting part and the supporting part.

Optionally, the reflecting part is planar or curved; when the reflecting part is in a curved surface, one side of the reflecting part, which is away from the supporting part, is concavely arranged, or one side of the reflecting part, which is away from the supporting part, is convexly arranged.

Optionally, the cross section shape of the connecting groove in the vertical cross section direction is a closed graph; the cross-sectional shape of the notch of the connecting groove comprises a triangle.

Optionally, the mounting groove is provided with a first groove wall which is arranged away from the connecting wall, and a second groove wall which is respectively connected with the first groove wall and the connecting wall; the first groove wall and the connecting wall are relatively parallel and are respectively perpendicular to the plane of the second groove wall, and the second groove wall is positioned between the first groove wall and the connecting wall and is connected with one end of the connecting wall through the supporting part.

Optionally, a reflective layer is arranged on the surface of the reflective part; the reflecting layer comprises a titanium dioxide reflecting layer, an aluminum reflecting layer, an acrylic polymer reflecting layer, a polyester resin reflecting layer or a polyvinyl chloride reflecting layer.

Optionally, the thickness of the light reflecting layer is 10um-50um.

The utility model provides a frame component, comprising: the frame units and the connecting pieces are suitable for being inserted into the connecting grooves of the second structure; adjacent ones of the border units are adapted to be connected by the connector.

Optionally, the frame assembly includes at least two pairs of the frame units; two frame units in each pair of frame units are oppositely arranged; all the frame units are suitable for enclosing a rectangle or a parallelogram; the connecting piece is suitable for being inserted into the connecting groove of the adjacent frame units to enable the adjacent frame units to be connected.

The utility model also provides a photovoltaic module, which comprises the frame component; and a vertically mounted solar cell module, an edge of the solar cell module being located in the mounting groove; the connecting line between the two ends of the reflecting part forms an included angle of 30-70 degrees with the solar cell module.

The utility model has the beneficial effects that:

the frame unit provided by the utility model has the advantages that the first structure is used for accommodating the solar cell module, and the back surface of the solar cell module faces the second structure. One end of the supporting part of the second structure is connected with the connecting wall; one end of the reflecting part is connected with one end of the supporting part, which is not connected with the connecting wall, and the other end of the reflecting part is connected with one end of the connecting wall, which is not connected with the reflecting part. Compared with the prior art, the second structure reduces the base, and avoids the shielding of the frame unit on the back of the solar cell module; meanwhile, when the incident light irradiates the second structure of the frame unit, the reflection part can directly reflect the incident light to the back surface of the solar cell module, so that the utilization rate of the incident light is improved, and the back surface power of the solar cell module is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a frame unit in embodiment 1 of the present utility model;

FIG. 2 is a schematic view of another structure of a frame unit in embodiment 1 of the present utility model;

FIG. 3 is a schematic view of another structure of a frame unit in embodiment 1 of the present utility model;

FIG. 4 is a schematic view showing a state of the frame assembly and the solar cell module in the mounting process according to the embodiment 2 of the present utility model;

fig. 5 is a schematic structural diagram of a frame unit and a solar cell module in embodiment 3 of the present utility model;

reference numerals illustrate:

a-a first structure; b-a second structure; a 100-rim unit; 110-connecting walls; 111-a support; 112-a reflecting section; 113-a connecting groove; 120-mounting slots; 121-a first groove wall; 122-second groove wall;

200-a solar cell module; 300-connectors; 1001 a first frame unit; 1002-a second bezel unit; 1003-third frame unit; 1004-fourth frame units;

e-incident light; f-reflecting light; an included angle between the alpha-reflecting part and the supporting part; the angle between the beta-reflecting part and the solar cell module.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

Current bezel units include: a first structure; a second structure connected with the first structure through a connecting wall; a connecting groove is formed in the second structure; the second structure comprises a base, the base is located on one side, away from the connecting wall, of the connecting groove, and the width of the base is larger than that of the connecting wall. The base is parallel to the solar cell module when the solar cell module is mounted, and the back surface of the solar cell module faces to one side of the connecting wall. Because the width of base is greater than the width of connecting wall, the base causes the back of sheltering from solar module for the light that incident to the frame unit can't reach solar module back, causes solar module's back power low.

Accordingly, it is desirable to provide a frame unit to solve the problem of low back power of the solar cell module due to shielding of the back of the solar cell module by the base.

Example 1

The present embodiment provides a frame unit 100, referring to fig. 1 to 3, including: a first structure a, wherein the first structure a is provided with a mounting groove 120, and the mounting groove 120 is used for accommodating at least the edge of a solar cell module; a second structure B, said second structure B and said first structure a being connected to form a connecting wall 110; the second structure B has a supporting portion 111 and a reflecting portion 112, and one end of the supporting portion 111 is connected to the connecting wall 110; one end of the reflecting portion 112 is connected to one end of the supporting portion 111, which is not connected to the connecting wall 110, and the other end is connected to one end of the connecting wall 110, which is not connected to the reflecting portion 112, and a connecting groove 113 is formed at least partially hollow between the supporting portion 111 and the reflecting portion 112.

In this embodiment, the first structure a is used to accommodate the solar cell module, and the back surface of the solar cell module faces the second structure B. One end of the supporting part 111 of the second structure B is connected to the connecting wall 110; one end of the reflecting portion 112 is connected to one end of the supporting portion 111, which is not connected to the connecting wall 110, and the other end is connected to one end of the connecting wall 110, which is not connected to the reflecting portion 112. Such a second structure B reduces the number of bases compared to the prior art, avoiding shielding of the back of the solar cell module by the frame unit 100 itself; meanwhile, when the incident light irradiates the second structure B of the frame unit, the reflection part 112 may directly reflect the incident light to the back surface of the solar cell module, thereby improving the utilization rate of the incident light and thus improving the back power of the solar cell module.

In one embodiment, the connecting wall 110 is at right angle to the supporting portion 111, and the connecting line between the two ends of the reflecting portion 112 forms an angle of 20 ° -60 ° with the supporting portion 111. If the included angle is smaller than 20 °, the supporting portion 111 needs to be extended, resulting in an excessively large volume of the frame unit 100; if the included angle is larger than 60 °, the degree to which the reflecting portion reflects the incident light to the back surface of the solar cell module is small, and the effect of improving the utilization rate of the incident light is weakened.

One end of the reflecting portion 112 is an end of the reflecting portion 112 connected to the supporting portion 111; the other end of the reflecting portion 112 is an end of the reflecting portion 112 connected to the connecting wall 110, or an end of the reflecting portion 112 is an end of the reflecting portion 112 connected to the connecting wall 110; the other end of the reflecting portion 112 is an end of the reflecting portion 112 connected to the supporting portion 111.

In one embodiment, the surface of the reflecting portion 112 is provided with a light reflecting layer (not shown). The reflective layer is disposed on the surface of the reflective portion 112, so that the reflective effect of the reflective portion 112 can be enhanced, more incident light is reflected to the back surface of the solar cell module on the surface of the reflective portion 112, and further, the utilization rate of the incident light is improved, and further, the back power of the solar cell module is improved.

In one embodiment, the light reflecting layer includes a titanium oxide light reflecting layer, an aluminum light reflecting layer, an acrylic polymer light reflecting layer, a polyester resin light reflecting layer, or a polyvinyl chloride light reflecting layer. In other embodiments, the retroreflective layer can be a retroreflective layer of other materials. The thickness of the light reflecting layer is 10um-50um, such as 10um, 20um, 30um, 40um or 50um in one embodiment. If the thickness of the reflecting layer is smaller, the effect of enhancing the reflecting effect of the reflecting part is weakened; if the thickness of the reflecting layer is large, materials are wasted, and the process cost is high.

In one embodiment, the reflective portion 112 is planar or curved. When the reflecting portion 112 is curved, a side of the reflecting portion 112 facing away from the supporting portion 111 is concavely disposed, or a side of the reflecting portion 112 facing away from the supporting portion 111 is convexly disposed. Specific:

referring to fig. 1, the reflecting portion 112 is planar, and a cross-section formed by the reflecting portion 112, the connecting wall 110 and the supporting portion 111 is a right triangle, wherein a right angle is formed between the connecting wall 110 and the supporting portion 111, and a plane of a connection line between an end of the reflecting portion 112 connected to the supporting portion 111 and an end of the reflecting portion 112 connected to the connecting wall 110 is a plane of the reflecting portion 112; the angle between the reflecting portion 112 and the supporting portion 111 is 20 ° to 60 °, and the angle between the reflecting portion 112 and the supporting portion 111 is 20 °, 30 °, 40 °, 50 ° or 60 ° by way of example.

Referring to fig. 2, the reflecting portion 112 is curved, and a side of the reflecting portion 112 facing away from the supporting portion 111 is concavely disposed. The broken line in fig. 2 shows a line connecting one end of the reflecting portion 112 to the supporting portion 111 and one end of the reflecting portion 112 to the connecting wall 110; in fig. 2, α represents an angle between the reflecting portion 112 and the supporting portion 111.

Referring to fig. 3, the reflecting portion 112 is curved, and a side of the reflecting portion 112 facing away from the supporting portion 111 is convex. The broken line in fig. 3 shows a line connecting one end of the reflecting portion 112 to the supporting portion 111 and one end of the reflecting portion 112 to the connecting wall 110; in fig. 3, α represents an angle between the reflecting portion 112 and the supporting portion 111.

In one embodiment, the cross-sectional shape of the connecting groove 113 in the vertical cross-sectional direction is a closed figure; with continued reference to fig. 2, the notch cross-sectional shape of the connecting groove 113 includes a triangle. In other embodiments, the cross-sectional shape of the slot opening of the attachment slot includes other shapes.

In this embodiment, the mounting groove 120 has a first groove wall 121 provided apart from the connection wall 110, and a second groove wall 122 connected to the first groove wall 121 and the connection wall 110, respectively. When the solar cell module is mounted into the mounting groove 120, the front surface of the solar cell module faces the first groove wall 121; the back side of the solar module faces the connection wall 110.

In one embodiment, the first groove wall 121 and the connecting wall 110 are arranged relatively parallel and perpendicular to the plane of the second groove wall 122, and the second groove wall 122 is located between the first groove wall 121 and the connecting wall 110 and connected to one end of the connecting wall 110 with the supporting portion 111.

Example 2

The present embodiment provides a frame assembly, including: a plurality of the frame units 100 and the connectors 300 according to embodiment 1, wherein the connectors 300 are adapted to be inserted into the connecting grooves 113 of the second structure B; adjacent ones of the border units 100 are adapted to be connected by the connector 300.

In this way, the solar cell module 200 may be protected by disposing the plurality of frame units 100 on the side of the solar cell module 200 to complete the encapsulation of the solar cell module 200.

The bezel assembly includes at least two pairs of the bezel units 100; two of the border units 100 in each pair of the border units 100 are disposed opposite to each other; all of the rim units 100 are adapted to enclose a rectangle or a parallelogram; the connector 300 is adapted to be inserted into the connecting groove 113 of the adjacent frame unit 100 to connect the adjacent frame units 100.

Specifically, as shown in fig. 4, fig. 4 is a schematic view of a state of the frame assembly and the solar cell assembly in the installation process according to an embodiment of the present utility model, and an arrow in the figure indicates an installation direction of the starting component.

In one embodiment, the frame assembly includes two pairs of oppositely disposed frame units 100, specifically including oppositely disposed first 1001 and third 1003 frame units, and oppositely disposed second 1002 and fourth 1004 frame units; the entire rim unit 100 is adapted to enclose a rectangle or a parallelogram. The connector 300 includes a first connector, a second connector, a third connector, and a fourth connector.

The first frame unit 1001 is connected to the second frame unit 1002 by a first connector, a portion of which is inserted into a connection groove of the first frame unit, and another portion of which is inserted into a connection groove of the second frame unit.

The second frame unit 1002 is connected to the third frame unit 1003 by a second connector, a portion of which is inserted into a connection groove of the second frame unit 1002, and another portion of which is inserted into a connection groove of the third frame unit 1003.

The third frame unit 1003 is connected to the fourth frame unit 1004 by a third connector, a part of which is inserted into a connection groove of the third frame unit 1003, and another part of which is inserted into a connection groove of the fourth frame unit 1004.

The fourth frame unit 1004 is connected to the first frame unit 1001 by a fourth connector, a part of which is inserted into a connection groove of the fourth frame unit 1004, and another part of which is inserted into a connection groove of the first frame unit 1001.

Furthermore, in other embodiments, the top view of the solar cell assembly may not be rectangular, such as triangular, parallelogram, or other polygon. The corresponding frame component can contain less than or equal to the number of the side edges of the solar cell component. When the length of one frame unit is far smaller than the length of the single side edge of the solar cell module, the frame units can be connected into a whole through the connecting piece and are jointly installed on the single side edge of the solar cell module, and the frame units are jointly installed on the two opposite side edges of the solar cell module, so that the solar cell module is packaged.

Example 3

The present embodiment provides a photovoltaic module, referring to fig. 5, including: the bezel assembly described in embodiment 2; and a vertically installed solar cell module 200, an edge of the solar cell module 200 being located in the installation groove 120; the line between the two ends of the reflecting portion 112 forms an angle of 30 ° -70 ° with the solar cell module 200.

The broken line in fig. 5 represents a line connecting both ends of the reflecting portion 112; beta in fig. 5 represents an angle between the reflecting portion 112 and the solar cell module 200. In this embodiment, the connecting wall 110 is at right angles to the supporting portion 111, and α+β is equal to 90 °.

Specifically, referring to fig. 5, when the incident light irradiates the surface of the second structure B, the reflecting portion 112 may reflect the incident light E directly to form reflected light F to be directed to the back surface of the solar cell module, so as to improve the utilization rate of the incident light, and thus improve the back power of the solar cell module.

Bifacial ratio of solar cell module = module back power/module front power. The higher the double-sided rate of the solar cell module is, the higher the generated energy of the photovoltaic system is. The double-sided rate of the solar cell module is greater than or equal to 95% through measurement and calculation; compared with the solar cell module in the prior art, the power generation amount of the solar cell module is increased by 5W.

The solar cell module 200 includes: the solar battery pack comprises a first packaging layer, a second packaging layer, a solar battery pack, a first electrode layer, a second electrode layer, a first electrode layer and a second electrode layer, wherein the first packaging layer and the second packaging layer are arranged oppositely, and the solar battery pack is arranged between the first packaging layer and the second packaging layer.

The solar battery pack comprises a plurality of parallel battery strings, wherein each battery string comprises a plurality of battery plates connected in series.

In one embodiment, the solar cell module 200 further includes: the first adhesive film is positioned on one side of the first packaging layer, which faces the solar battery pack, and the second adhesive film is positioned on one side of the second packaging layer, which faces the solar battery pack.

In one embodiment, the first encapsulation layer comprises glass and the second encapsulation layer comprises a back plate or glass; the first adhesive film comprises a polyethylene-polyvinyl acetate copolymer adhesive film, an expandable polyethylene adhesive film, a polyvinyl butyral adhesive film or an ethylene-octene copolymer adhesive film, and the second adhesive film comprises a polyethylene-polyvinyl acetate copolymer adhesive film, an expandable polyethylene adhesive film, a polyvinyl butyral adhesive film or an ethylene-octene copolymer adhesive film.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims (10)

1. A bezel unit, comprising:

the solar cell module comprises a first structure, a second structure and a third structure, wherein the first structure is provided with a mounting groove which is used for accommodating at least the edge of a solar cell module;

a second structure connected to the first structure to form a connecting wall; the second structure is provided with a supporting part and a reflecting part, and one end of the supporting part is connected with the connecting wall; one end of the reflecting part is connected with one end of the supporting part, which is not connected with the connecting wall, and the other end of the reflecting part is connected with one end of the connecting wall, which is not connected with the reflecting part, and a connecting groove is formed between the supporting part and the reflecting part at least partially in a hollow mode.

2. The bezel unit of claim 1, wherein the connection wall is at right angles to the support portion, and a line between both ends of the reflection portion forms an angle of 20 ° -60 ° with the support portion.

3. The bezel unit as recited in claim 1, wherein the reflective portion is planar or curved; when the reflecting part is in a curved surface, one side of the reflecting part, which is away from the supporting part, is concavely arranged, or one side of the reflecting part, which is away from the supporting part, is convexly arranged.

4. The rim unit as set forth in claim 1, wherein the cross-sectional shape of the connection groove in the vertical cross-sectional direction is a closed figure; the cross-sectional shape of the notch of the connecting groove comprises a triangle.

5. The rim unit as set forth in claim 1, wherein the mounting groove has a first groove wall provided apart from the connection wall, and a second groove wall connected to the first groove wall and the connection wall, respectively;

the first groove wall and the connecting wall are relatively parallel and are respectively perpendicular to the plane of the second groove wall, and the second groove wall is positioned between the first groove wall and the connecting wall and is connected with one end of the connecting wall through the supporting part.

6. The frame unit according to any one of claims 1 to 5, wherein a surface of the reflecting portion is provided with a light reflecting layer; the reflecting layer comprises a titanium dioxide reflecting layer, an aluminum reflecting layer, an acrylic polymer reflecting layer, a polyester resin reflecting layer or a polyvinyl chloride reflecting layer.

7. The bezel unit of claim 6, wherein the reflective layer has a thickness of 10um to 50um.

8. A bezel assembly, comprising: a plurality of border elements as defined in any one of claims 1 to 7 and connectors adapted to be inserted into the connecting slots of the second structure; adjacent ones of the border units are adapted to be connected by the connector.

9. The rim assembly of claim 8, wherein the rim assembly includes at least two pairs of the rim units; two frame units in each pair of frame units are oppositely arranged; all the frame units are suitable for enclosing a rectangle or a parallelogram; the connecting piece is suitable for being inserted into the connecting groove of the adjacent frame units to enable the adjacent frame units to be connected.

10. A photovoltaic module, comprising:

the bezel assembly of any one of claims 8 to 9;

and a vertically mounted solar cell module, an edge of the solar cell module being located in the mounting groove; the connecting line between the two ends of the reflecting part forms an included angle of 30-70 degrees with the solar cell module.