CN213660433U - Arc-shaped photovoltaic module - Google Patents

Abstract

This practical novel a curved photovoltaic module that discloses, photovoltaic module includes: the solar cell comprises a back plate, a cell layer and a glass plate, wherein the cell layer is bonded on one side surface of the back plate, the cell layer comprises a plurality of cell sheets which are distributed in a row, the plurality of cell sheets which are positioned in the same row are mutually connected in series to form a cell string, and the plurality of cell strings are connected through a bus bar. The glass plate is bonded on one side of the battery layer, which is far away from the back plate, and the glass plate is bent in an arc shape in a first direction, and the first direction is consistent with the row direction of the battery piece. Wherein the width of the battery piece is a, the length of the battery piece is b, and a is less than or equal to b/6. Therefore, the battery pieces are attached to the glass plate more tightly, the gap between each battery piece and the glass plate is smaller, the protection of the battery pieces is increased, and the battery pieces are prevented from being broken in the bending process.

Description

Arc-shaped photovoltaic module

Technical Field

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

Background

The effective close combination of solar power generation, new energy automobiles and special roofs is one of the hot topics of research in the industry. However, the shed roof of the solar car shed usually has a radian, the conventional crystalline silicon component belongs to a flat plate structure and cannot be bent, the further collection of the photovoltaic component and a new energy car is limited, in addition, the crystalline silicon cell is very fragile and is very easy to damage under stress, the solar cell is generally applied by adopting toughened glass for protection at present, and the solar component of the type is suitable for planar installation and is difficult to install on a curved surface. As shown in fig. 5, the photovoltaic module is generally formed by an aspect ratio of 2: the cell pieces 21 'of 1 are connected in series and then are jointed with the glass plate 30', the clearance during jointing is large, and the cell pieces are easy to break when the photovoltaic module is manufactured and bent.

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 present invention is to provide an arc-shaped photovoltaic module.

The utility model discloses photovoltaic module includes: the solar cell comprises a back plate, a cell layer and a glass plate, wherein the cell layer is bonded on one side surface of the back plate, the cell layer comprises a plurality of cell sheets which are distributed in a row and a column, the plurality of cell sheets which are positioned in the same column are mutually connected in series to form a cell string, and the plurality of cell strings are connected through a bus bar. The glass plate is bonded to one side, away from the back plate, of the battery layer, and is bent in an arc shape in a first direction, and the first direction is consistent with the row direction of the battery pieces. The width of the battery piece is a, the length of the battery piece is b, and a is less than or equal to b/6.

Therefore, the width of each cell is shortened by improving the length-width ratio of each cell, so that the number of the cells arranged in the arc bending direction of the glass plate is larger, each cell is attached to the glass plate more tightly, the gap between each cell and the glass plate is smaller, the protection of the cells is increased, and the cells are prevented from being broken in the bending process.

In some embodiments, a ≧ b/10.

In some embodiments, the glass sheet has a width c, wherein 600mm ≦ c ≦ 1000 mm.

In some embodiments, the glass sheet has a thickness ≧ 3.2 mm.

In some embodiments, the glass plate is bent in a circular arc shape, and the central angle between the arc shapes is o, and is more than or equal to 45 degrees and less than or equal to 75 degrees.

In some embodiments, the back plate is curved and the curvature of the back plate corresponds to the curvature of the glass sheet.

In some embodiments, the photovoltaic module further includes a first adhesive film layer and a second adhesive film layer, the back plate is bonded to the battery layer through the first adhesive film layer, and the battery layer is connected to the glass plate through the second adhesive film layer.

In some embodiments, the length of the battery piece is b, 152mm ≦ b ≦ 215mm, and the thickness d of the battery piece is ≦ 0.2 mm.

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 cross-sectional view of a curved photovoltaic module according to an embodiment of the present invention.

Fig. 2 is a schematic view of a curved photovoltaic module glass sheet in accordance with an embodiment of the present invention.

Fig. 3 is a schematic arrangement diagram of the arc-shaped photovoltaic module cell pieces according to the embodiment of the present invention.

Fig. 4 is a left side schematic view of a first direction of a curved photovoltaic module according to an embodiment of the present invention.

Fig. 5 is a schematic left side view of a prior art photovoltaic module in a first orientation.

Reference numerals:

a photovoltaic module 100;

a back plate 10; a battery layer 20; a battery piece 21;

a glass plate 30;

a first adhesive film layer 40; a second adhesive film layer 50;

a terminal block 60.

Detailed Description

Embodiments of the present invention are described in detail below, and the embodiments described with reference to the drawings are exemplary.

A curved photovoltaic module 100 according to an embodiment of the present invention is described below with reference to fig. 1-4.

According to the utility model discloses curved photovoltaic module 100 includes: a back sheet 10, a battery layer 20, and a glass plate 30.

As shown in fig. 1, the battery layer 20 is adhered to one side surface of the back sheet 10, the battery layer 20 includes a plurality of battery pieces 21 arranged in a row, the plurality of battery pieces 21 in the same row are connected in series to form a battery string, and the plurality of battery strings are connected by a bus bar. The glass plate 30 is adhered to the side of the battery layer 20 away from the back plate 10, and the glass plate 30 is bent in an arc shape in a first direction, wherein the first direction is consistent with the row direction of the battery pieces 21. In other words, the length direction of each cell 21 is perpendicular to the column direction (i.e., the first direction), the long edges (the edges where the lengths are located) of the cells 21 in the same column may be parallel to each other, and the short edges (the edges where the widths are located) may be aligned.

Wherein the width of the battery piece 21 is a, the length of the battery piece 21 is b, and b/10 is more than or equal to a and less than or equal to b/6.

As shown in fig. 1 and 3, the cells are sandwiched between the backsheet 10 and the glass sheet 30, and a photovoltaic module 100 is formed by a lamination process by placing a glue between the cells and the backsheet 10 and between the cells and the glass sheet 30, the glue adhering one side of the cells to the glass sheet 30 and the other side of the cells to the backsheet 10.

Therefore, as shown in fig. 4, by increasing the length-width ratio of the single cell 21, the width of the cell 21 is shortened, so that the number of the cells 21 arranged in the arc bending direction of the glass plate 30 is larger, thus the individual cells 21 can be attached to the glass plate 30 more closely, the gap between each cell 21 and the glass plate 30 is smaller, the protection of the cell 21 is increased, and the cell 21 is prevented from being broken in the bending process.

Optionally, the width of the glass plate 30 is c, wherein c is more than or equal to 600mm and less than or equal to 1000mm, and the thickness of the glass plate 30 is more than or equal to 3.2 mm.

Therefore, the width size of the glass plate 30 in the range can reduce the production and research and development costs and improve the comprehensive competitiveness of the product. In addition, the minimum thickness of the glass plate 30 is controlled, so that the glass plate 30 can keep a better self-shape and has certain rigidity and toughness.

Further, as shown in fig. 2, the glass plate 30 is bent in an arc shape, and the central angle between the arcs is o, and o is not less than 45 ° and not more than 75 °. That is, the angle between the radii connecting the ends of the glass plate 30 in the longitudinal direction respectively across the center of the circle is controlled to be 45 ° to 75 °. This makes it possible to bend the glass sheet 30 to the maximum extent while maintaining the strength of the glass sheet 30, and the application range is widened.

As shown in fig. 1, the back sheet 10 has an arc shape, and the arc of the back sheet 10 corresponds to the arc of the glass sheet 30. Thus, the degree of curvature of the back plate 10 is matched with that of the glass plate 30, the position of the battery piece 21 can be further limited, the gap between the glass plate 30 and the back plate 10 is reduced, and the occupation of the peripheral space is reduced.

Specifically, the photovoltaic module 100 further includes a first adhesive film layer 40 and a second adhesive film layer 50, the back plate 10 is bonded to the battery layer 20 through the first adhesive film layer 40, and the battery layer 20 is connected to the glass plate 30 through the second adhesive film layer 50. It is understood that the battery layer 20 is bonded to the back sheet 10 through the first adhesive film layer 40, and then the glass plate 30 is bonded to the battery layer 20 through the first adhesive film layer 40.

Therefore, the photovoltaic module 100 formed by laminating and bonding can improve the firmness of the photovoltaic module 100, and the adhesive film layer can further fill gaps among the glass plate 30, the battery layer 20 and the back plate 10 during lamination, so that the stability of the whole photovoltaic module 100 is higher, and the damage rate of the photovoltaic module 100 in the manufacturing or bending process is effectively reduced.

Optionally, the length of the cell 21 is b, and 152mm ≤ b ≤ 215mm, and the thickness d of the cell 21 is ≤ 0.2 mm. Therefore, by adopting the battery piece 21 with the size, the battery piece 21 can be closer to the glass plate 30, the gap between the battery piece 21 and the glass plate 30 and the back plate 10 is reduced, and the battery piece 21 is prevented from being broken in the laminating process to influence the quality and the service life of the photovoltaic module 100.

It should be noted that, a junction box 60 is further disposed on a side of the back sheet 10 of the photovoltaic module 100 away from the cell layer 20, and is used for connecting and protecting the photovoltaic module 100, and connecting the electric power generated by the solar cell with an external circuit, so as to conduct the electric current generated by the photovoltaic module 100.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship 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.

In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features. In the description of the present invention, "a plurality" means two or more. In the description of the present invention, the first feature "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween. In the description of the invention, the first feature being "on", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature.

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 (8)

1. An arcuate photovoltaic module, comprising:

a back plate;

the battery layer is adhered to one side surface of the back plate and comprises a plurality of battery pieces which are distributed in a row and a column, the battery pieces in the same column are mutually connected in series to form a battery string, and the battery strings are connected through a bus bar;

the glass plate is bonded to one side, away from the back plate, of the battery layer, and is bent in an arc shape in a first direction, and the first direction is consistent with the row direction of the battery pieces;

the width of the battery piece is a, the length of the battery piece is b, and a is less than or equal to b/6.

2. The photovoltaic module of claim 1, wherein a ≧ b/10.

3. The photovoltaic module of claim 1, wherein the glass sheet has a width c, wherein 600mm ≦ c ≦ 1000 mm.

4. The photovoltaic module of claim 1, wherein the glass sheet has a thickness of 3.2mm or more.

5. The photovoltaic module according to claim 1, wherein the glass plate is bent in a circular arc shape, and the central angle between the circular arc shapes is o, and is between 45 ° and 75 °.

6. The photovoltaic module of claim 5, wherein the backsheet is curved and the curvature of the backsheet conforms to the curvature of the glass sheet.

7. The photovoltaic module according to any one of claims 1 to 5, further comprising a first adhesive film layer and a second adhesive film layer, wherein the back sheet is bonded to the cell layer through the first adhesive film layer, and the cell layer is connected to the glass plate through the second adhesive film layer.

8. The photovoltaic module according to any one of claims 1 to 5, wherein the length of the cell sheet is b, 152mm ≤ b ≤ 215mm, and the thickness d of the cell sheet is ≤ 0.2 mm.

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