CN209766448U

CN209766448U - Solar cell module

Info

Publication number: CN209766448U
Application number: CN201920409337.6U
Authority: CN
Inventors: 张学良; 王钊; 罗乐平; 高广超; 李广旭
Original assignee: Beijing Apollo Ding Rong Solar Technology Co Ltd
Current assignee: Shanghai zuqiang Energy Co.,Ltd.
Priority date: 2019-03-28
Filing date: 2019-03-28
Publication date: 2019-12-10
Anticipated expiration: 2029-03-28

Abstract

The utility model discloses a solar module, solar cell is including base plate, molybdenum electrode layer, the light absorption layer that stacks gradually, solar module includes: the power generation device comprises a power generation area, a first transverse molybdenum-remaining film removing area, a second transverse molybdenum-remaining film removing area, a first longitudinal molybdenum-remaining film removing area, a second longitudinal molybdenum-remaining film removing area, an insulation scribing line, a bus bar and a bus bar leading-out end. Compared with the prior art, the utility model discloses a cavity viewing device includes following advantage: the busbar is fixed and is vertically stayed molybdenum and remove the membrane area with the second vertically stays molybdenum and remove the membrane area, can reduce the length of busbar to reduce cost, simultaneously, the busbar is fixed and is vertically stayed molybdenum and remove the membrane area with the second vertically stays molybdenum and remove the membrane area and need not buckle, and the operation is easier, has reduced the fixed operation degree of difficulty of busbar.

Description

Solar cell module

Technical Field

The invention relates to the field of solar cells, in particular to a solar cell module.

Background

With the rapid development of economy and society and the increasing demand for energy, solar cells are increasingly widely used as a device capable of converting solar energy into electric energy. The bus bar is a part of a solar cell module, which is used for connecting each cell slice connected in series with each other, and the existing technology usually fixes the bus bar in a molybdenum layer area of the cell slice and then bends the bus bar to penetrate out of a bus bar lead-out hole. The fixing method of the bus bar usually needs a longer bus bar, so the cost is higher, and the bus bar needs to be bent when being fixed, so the operation is more complicated.

Disclosure of Invention

In order to solve the technical problem that the fixed operation of above-mentioned busbar is with high costs, busbar is complicated, the utility model provides a solar module, solar cell includes base plate, molybdenum electrode layer, the light absorption layer that stacks gradually, solar module includes: the power generation device comprises a power generation area, a first transverse molybdenum-remaining film removing area, a second transverse molybdenum-remaining film removing area, a first longitudinal molybdenum-remaining film removing area, a second longitudinal molybdenum-remaining film removing area, an insulation scribing line, a bus bar and a bus bar leading-out end; the first transverse molybdenum-remaining film removing area and the second transverse molybdenum-remaining film removing area are respectively positioned at the outer sides of two transverse edges of the power generation area; the insulation scribing line is positioned on the outer side of one longitudinal edge of the power generation area, so that the first transverse molybdenum film retaining and removing area and the second transverse molybdenum film retaining and removing area are insulated from the power generation area; the first longitudinal molybdenum film retaining and removing region and the second longitudinal molybdenum film retaining and removing region are respectively communicated with the first transverse molybdenum film retaining and removing region and the second transverse molybdenum film retaining and removing region and are positioned on one side of the insulation scribing line, which is far away from the power generation region; the bus bar is fixed on the first longitudinal molybdenum-remaining film removing area and the second longitudinal molybdenum-remaining film removing area and penetrates through the bus bar leading-out end.

Compared with the prior art, the utility model discloses a solar module includes following advantage:

the busbar is fixed and is vertically stayed molybdenum and remove the membrane area with the second vertically stays molybdenum and remove the membrane area, the length of reduction busbar that can be great to reduce cost, simultaneously, the busbar is fixed and is vertically stayed molybdenum and remove the membrane area with the second vertically stays molybdenum and removes the membrane area and need not buckle, and the operation is easier, has reduced the fixed operation degree of difficulty of busbar.

Drawings

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

Fig. 1 is a schematic structural diagram of a solar cell module in the related art;

Fig. 2 is a schematic structural view of a solar cell module without a bus bar according to an embodiment of the present invention;

Fig. 3 is a schematic structural diagram of a solar cell module according to an embodiment of the present invention.

Reference numerals:

11-power generation area, 12-membrane removing area, 13-first transverse molybdenum retaining membrane removing area, 14-second transverse molybdenum retaining membrane removing area, 15-bus bar leading-out end, 16-first longitudinal molybdenum retaining membrane removing area, 17-second longitudinal molybdenum retaining membrane removing area, 18-insulation scribing line and 19-bus bar

Detailed Description

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

A conventional solar cell generally includes a substrate, a molybdenum electrode layer, and a light absorbing layer, which are sequentially stacked. The substrate is usually glass, and the light absorbing layer is used for power generation. In a solar cell module, in order to connect the cells connected in series with each other, the existing technology generally fixes the bus bar in the molybdenum layer area of the cell, and then bends the bus bar to penetrate out of the bus bar lead-out hole.

As shown in fig. 1, the solar cell module includes: the power generation device comprises a power generation area (11), a film removing area (12), a first transverse molybdenum film removing area (13), a second transverse molybdenum film removing area (14), a bus bar (not shown) and a bus bar leading-out end (15). The first transverse molybdenum film retaining and removing area (13) and the second transverse molybdenum film retaining and removing area (14) are respectively positioned at the outer sides of two transverse sides of the power generation area (11). The film removing region (12) is located on the outermost side of the solar cell module. The bus bar is fixed on the first transverse molybdenum film removing area (13) and the second transverse molybdenum film removing area (14), and the bus bar penetrates through the bus bar leading-out end (15) after being bent.

wherein, the power generation area (11) is an area with a light absorption layer, the film removing area (12) is an area for completely removing the molybdenum electrode layer, the first transverse molybdenum film remaining area (13) and the second transverse molybdenum film remaining area (14) are areas for removing the light absorption layer while retaining the molybdenum electrode layer,

When the solar cell module shown in fig. 1 is used for fixing the bus bar, on one hand, the length of the bus bar at least comprises the length fixed in the first transverse molybdenum film retaining region (13) and the second transverse molybdenum film retaining region (14) and the length bent to penetrate through the bus bar leading-out end (15) in the film removing region (12). The required bus bars are long and costly. On the other hand, in the preparation process of the solar cell module, the bus bar is firstly required to be accurately fixed on the first transverse molybdenum film removing region (13) and the second transverse molybdenum film removing region (14), and then the bus bar is bent and fixed on the film removing region (12) and penetrates through the bus bar leading-out end (15). Therefore, the whole operation process is relatively complex and the operation difficulty is relatively high.

As shown in fig. 2 and 3, the present invention provides a solar cell module, including: the power generation device comprises a power generation area (11), a first transverse molybdenum film removing area (13), a second transverse molybdenum film removing area (14), a first longitudinal molybdenum film removing area (16), a second longitudinal molybdenum film removing area (17), an insulation scribing line (18), a bus bar (19) and a bus bar leading-out end (15).

The first transverse molybdenum film retaining and removing area (13) and the second transverse molybdenum film retaining and removing area (14) are respectively positioned at the outer sides of two transverse sides of the power generation area (11). Optionally, the first transverse molybdenum film remaining and removing region (13) and the second transverse molybdenum film remaining and removing region (14) are of a symmetrical structure. Specifically, the width of the first transverse molybdenum film retaining and removing area (13) is 3mm-6mm, the width of the second transverse molybdenum film retaining and removing area (14) is 3mm-6mm,

The insulation scribing line (18) is positioned outside one longitudinal side of the power generation area (11), namely outside one side of the power generation area (11) which is vertical to the first transverse molybdenum film retaining area (13) and the second transverse molybdenum film retaining area (14). Specifically, the insulating scribing line (18) removes the film layer completely by means of mechanical scribing or laser scribing. The first longitudinal molybdenum film retaining and removing area (16) and the second longitudinal molybdenum film retaining and removing area (17) can be completely insulated from the power generation area (11) by the insulating scribing lines (18), and meanwhile, the first longitudinal molybdenum film retaining and removing area (16) and the second longitudinal molybdenum film retaining and removing area (17) are required to be respectively communicated with the first transverse molybdenum film retaining and removing area (13) and the second transverse molybdenum film retaining and removing area (14).

Specifically, the length of the insulation scribing line (18) is 3mm-5mm, the width is 20 μm-150 μm, and optionally, the length of the insulation scribing line (18) is equal to the length of the longitudinal side of the power generation area (11) adjacent to the length of the insulation scribing line.

the first longitudinal molybdenum film retaining and removing area (16) and the second longitudinal molybdenum film retaining and removing area (17) are respectively communicated with the first transverse molybdenum film retaining and removing area (13) and the second transverse molybdenum film retaining and removing area (14) and are positioned on one side of the insulation scribing line (18) far away from the power generation area (11). Optionally, the first longitudinal molybdenum film retaining and removing region (16) and the second longitudinal molybdenum film retaining and removing region (17) are symmetrical structures. Specifically, the length of the first longitudinal molybdenum film retaining and removing area (16) is 5mm-15mm, the width of the first longitudinal molybdenum film retaining and removing area is 3mm-6mm, and the length of the second longitudinal molybdenum film retaining and removing area (17) is 5mm-15mm, and the width of the second longitudinal molybdenum film retaining and removing area is 3mm-6 mm.

as shown in fig. 3, the bus bar (19) is fixed on the first longitudinal molybdenum film retaining region (16) and the second longitudinal molybdenum film retaining region (17), and passes through the bus bar leading-out end (15). The bus bars (19) are typically aluminum or tin-plated copper strips, with a width of 2mm to 5 mm.

Generally, the fixing manner of the bus bars (19) is welding, and the number of the bus bars (19) is two. The two bus bars are respectively fixed on the first longitudinal molybdenum film retaining and removing area (16) and the second longitudinal molybdenum film retaining and removing area (17), and the fixed length of the two bus bars on the first longitudinal molybdenum film retaining and removing area (16) and the second longitudinal molybdenum film retaining and removing area (17) is smaller than or equal to the length of the first longitudinal molybdenum film retaining and removing area (16) and the second longitudinal molybdenum film retaining and removing area (17). The two bus bars can be same in fixed length of the first longitudinal molybdenum film retaining and removing area (16) and the second longitudinal molybdenum film retaining and removing area (17) or different in fixed length. For example, the fixed length of one of the bus bars in the first longitudinal molybdenum-remaining film removing region (16) is equal to the length of the first longitudinal molybdenum-remaining film removing region (16), or is one half or one third of the length of the first longitudinal molybdenum-remaining film removing region (16).

Further, the solar cell module can also comprise a film removing area (12), and the film removing area (12) is positioned at the outermost side of the solar cell module.

The bus bar leading-out end (15) is close to the first longitudinal molybdenum film removing region (16) and the second longitudinal molybdenum film removing region (17) and penetrates through the substrate of the solar cell. The bus bar (19) passes through the bus bar leading-out end (15) and is connected with the junction box. Optionally, the number of the bus bar leading-out ends (15) is two, and the two bus bars (19) are respectively used for passing through. The cross-sectional shape of the bus bar leading end (15) is not limited as long as the bus bar (19) can pass through, and specifically, the cross-sectional shape may be circular, elliptical, or the like.

compared with the prior art, the utility model provides a solar module has following advantage:

Compare among the prior art, the busbar need be fixed and transversely stay the molybdenum and remove the membrane district and further buckle, then pass the busbar and draw forth the end, the utility model discloses a solar module's busbar only need be fixed and vertically stay the molybdenum and remove membrane district and the second and vertically stay the molybdenum and remove the membrane district at first, can reduce the length of required busbar to reduce cost. Meanwhile, the bus bar is fixed on the first longitudinal molybdenum film removing area and the second longitudinal molybdenum film removing area, the bus bar is only fixed in one direction, bending is not needed, operation is easier, and the bus bar can be accurately fixed, so that the operation difficulty of fixing the bus bar is reduced.

It is understood that the terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. "lateral" and "longitudinal" are used merely to facilitate describing the invention and to simplify the description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered limiting of the invention.

Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A solar cell module, the solar cell including a substrate, a molybdenum electrode layer, and a light absorbing layer that are sequentially stacked, the solar cell module comprising: the power generation device comprises a power generation area (11), a first transverse molybdenum-remaining film removing area (13), a second transverse molybdenum-remaining film removing area (14), a first longitudinal molybdenum-remaining film removing area (16), a second longitudinal molybdenum-remaining film removing area (17), an insulation scribing line (18), a bus bar (19) and a bus bar leading-out end (15); the first transverse molybdenum film retaining and removing region (13) and the second transverse molybdenum film retaining and removing region (14) are respectively positioned at the outer sides of two transverse edges of the power generation region (11); the insulation scribing line (18) is positioned outside one longitudinal edge of the power generation area (11) and insulates the first transverse molybdenum film retaining area (13) and the second transverse molybdenum film retaining area (14) from the power generation area (11); the first longitudinal molybdenum film retaining and removing region (16) and the second longitudinal molybdenum film retaining and removing region (17) are respectively communicated with a first transverse molybdenum film retaining and removing region (13) and a second transverse molybdenum film retaining and removing region (14), and are positioned on one side of the insulation scribing line (18) far away from the power generation region (11); the bus bar (19) is fixed on the first longitudinal molybdenum film retaining and removing area (16) and the second longitudinal molybdenum film retaining and removing area (17) and penetrates through the bus bar leading-out end (15).

2. The solar cell module according to claim 1, further comprising a film removal region (12), wherein the film removal region (12) is located at the outermost side of the solar cell module.

3. The solar cell module according to claim 1, wherein the first lateral molybdenum film-remaining region (13) and the second lateral molybdenum film-remaining region (14) are of a symmetrical structure.

4. The solar cell module according to claim 3, wherein the width of the first lateral molybdenum film leaving zone (13) is 3mm to 6 mm.

5. the solar cell module according to claim 1, wherein the first longitudinal molybdenum film retaining region (16) and the second longitudinal molybdenum film retaining region (14) are of a symmetrical structure.

6. The solar cell module according to claim 5, wherein the first longitudinal molybdenum film leaving zone (16) has a length of 10mm to 20mm and a width of 3mm to 6 mm.

7. Solar cell module according to any of claims 1 to 6, characterised in that the length of the insulating score line (18) is equal to the length of the longitudinal edge of the power generation region (11) adjacent thereto.

8. Solar module according to any of claims 1 to 6, characterized in that the number of bus bars (19) is two.

9. The solar cell module according to any one of claims 1 to 6, wherein the number of the bus bar lead-out terminals (15) is two.

10. The solar cell module according to claim 9, wherein the bus bar lead-out terminal (15) is circular in cross section.