CN203491269U - Solar cell and solar cell assembly - Google Patents

Solar cell and solar cell assembly Download PDF

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Publication number
CN203491269U
CN203491269U CN201320364497.6U CN201320364497U CN203491269U CN 203491269 U CN203491269 U CN 203491269U CN 201320364497 U CN201320364497 U CN 201320364497U CN 203491269 U CN203491269 U CN 203491269U
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China
Prior art keywords
thin grid
grid line
solar cell
line
electrode
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CN201320364497.6U
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Chinese (zh)
Inventor
高艳杰
董建华
肖永欣
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Nanjing multi base Observation Technology Research Institute Co., Ltd
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Yingli Group Co Ltd
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Abstract

The utility model provides a solar cell and a solar cell assembly, wherein, the solar cell comprises a cell body. The sun-facing surface of the cell body is internally provided with a first electrode and a plurality of first thin grid lines which are arranged radially. The radiation origin of each first thin grid line is arranged at the first electrode. The solar cell provided by the utility model has the following functions: saving silver slurry required in production, and reducing production cost of the solar cell.

Description

Solar cell and solar module
Technical field
The utility model relates to photovoltaic cell field, in particular to a kind of solar cell and solar module.
Background technology
In the prior art, as shown in Figure 1 to Figure 3, solar module comprises framework 2 ' and is arranged on the solar cell 1 ' in framework, the main grid line 11 ' that the sunny slope of solar cell 1 ' has the thin grid line 13 ' of a plurality of parallel settings and connects a plurality of thin grid lines.Wherein, the electric current that main grid line 11 ' produces for collecting thin grid line 13 ', and be connected with the backplate 12 ' of adjacent solar cell 1 ', make adjacent solar cell 1 ' formation battery pack.
As shown in Figure 1, due to the wider width of main grid line 11 ', area is larger, can exert an influence to the generating efficiency of solar cell 1 ', and the silver slurry coating that wider main grid line 11 ' need to be a large amount of, cause the with high costs of solar cell 1 '.
Utility model content
The utility model aims to provide a kind of solar cell cheaply and solar module.
To achieve these goals, according to an aspect of the present utility model, a kind of solar cell is provided, comprise: battery body, in the sunny slope of battery body, be provided with first electrode and many first thin grid lines, many first thin grid lines radially distribute, the radiation initial point of each first thin grid line is all positioned at the first electrode place, the first thin grid line comprises First Line and the second line, on battery body, be also provided with many second thin grid lines that extend along first direction and many 3rd thin grid lines that extend along second direction, the first end of the second thin grid line is arranged on first-line end, the first end of the 3rd thin grid line arranges on the second line.
Further, the sunny slope of battery body comprises a first He Liangge Second Region, district, and the firstth district is arranged between two Second Regions, and First Line and the second thin grid line are distributed in the firstth district, and the second line and the 3rd thin grid line are distributed in Second Region.
Further, also have many articles the 4th thin grid lines and many articles the 5th thin grid lines in the firstth district, the 4th thin grid line and the second thin grid line interval arrange, and the 5th thin grid line is arranged between the 4th thin grid line and First Line.
Further, be also provided with the first connection grid line in the firstth district, first connects grid line is connected with the second end of each the second thin grid line, is also provided with the second connection grid line in Second Region, and second connects grid line is connected with the second end of each the 3rd thin grid line.
Further, battery body has first side edge and the Second Edge edge being oppositely arranged, and the first electrode is arranged on the first edge, is also provided with the second electrode in the opaco of battery body, and the second electrode is arranged on the second edge.
According on the other hand of the present utility model, a kind of solar module is provided, solar module comprises the solar cell of a plurality of series connection, solar cell is above-mentioned solar cell.
Further, solar module of the present utility model also comprises framework, and a plurality of solar cells are matrix distribution in framework.
Further, the arranged direction of two the adjacent solar cells in same a line is contrary.
Further, solar module of the present utility model also comprises many convergent belts, and the first end of convergent belt is connected with the first electrode or second electrode of a solar cell.
In the technical solution of the utility model, many first thin grid lines radially distribute on the sunny slope of battery body, the first electrode is arranged on the radiation initial point place of the first thin grid line and is connected with each first thin grid line, and assembles by the electric current producing on each first thin grid line of the first electrode pair.This set of the first thin grid line and the first electrode, make the first electrode when playing the effect of main grid line of the prior art, what the area of the first electrode can also be arranged is less, and then has saved the silver slurry amount that need to use while producing, has reduced the production cost of solar cell.
Accompanying drawing explanation
The Figure of description that forms the application's a part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 show solar cell of the prior art to sunny slope;
Fig. 2 shows the sunny side dorsad of solar cell of the prior art;
Fig. 3 shows solar module of the prior art;
Fig. 4 shows the structure schematic diagram according to the embodiment of solar cell of the present utility model;
The positive mapping of the solar cell that Fig. 5 shows Fig. 4 on battery matrix;
Fig. 6 shows solar cell minute back side distribution map on battery matrix of Fig. 4; And
Fig. 7 shows the structural representation of the embodiment of solar module of the present utility model.
Reference numeral in above-mentioned accompanying drawing is as follows:
1, solar cell; 2, framework; 10, battery body; 111, the first electrode; 112, the second electrode; 121, First Line; 122, the second line; 13, the second thin grid line; 14, the 3rd thin grid line; 15, first connects grid line; 16, second connects grid line; 18, the 4th thin grid line; 19, the 5th thin grid line; 1 ', solar cell; 2 ', framework; 11 ', main grid line; 12 ', backplate; 13 ', thin grid line.
Embodiment
It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.
Fig. 4 shows the structural representation of the embodiment of solar cell of the present utility model, as can be seen from the figure, the solar cell of the present embodiment comprises battery body 10, in the sunny slope of battery body 10, be provided with first electrode 111 and many first thin grid lines, many first thin grid lines radially distribute in sunny slope, and the radiation initial point of each first thin grid line is positioned at the first electrode 111 places.In the present embodiment, the first electrode 111 plays the effect of main grid line of the prior art, collects the electric current producing on the first thin grid line.It is less that solar cell of the present utility model can arrange the area of the first electrode 111, and then saved the silver slurry amount that need to use while producing, reduced the production cost of solar cell.
Because the first thin grid line is radial arrangement, from radiation initial point more away from, the distance between two first adjacent thin grid lines is larger.While being only provided with the first thin grid line on battery body 10, the area on battery body 10 cannot be fully utilized, and therefore, except the first thin grid line, also in the sunny slope of battery body 10, is provided with the second thin grid line 13 and the 3rd thin grid line 14.As shown in Figures 4 to 6, the second thin grid line 13 extends along first direction, and the 3rd thin grid line 14 extends along second direction.The first thin grid line comprises First Line 121 and the second line 122, the first end of the second thin grid line 13 is connected on one end away from radiation far-end of First Line 121, the first end of the 3rd thin grid line 14 is connected on one end away from radiation far-end of the second line 122, so that the second thin grid line 13 is connected with the first electrode 111 by the first thin grid line with the 3rd thin grid line 14, make the first electrode 111 can assemble the electric current producing on the first thin grid line, the second thin grid line 13 and the 3rd thin grid line 14.In such set-up mode, many the second thin grid lines 13 that be arranged in parallel and many 3rd thin grid lines 14 that be arranged in parallel are all away from radiation initial point, can utilize fully the area on battery body 10, make to be covered with in the sunny slope of battery body 10 can generation current grid line, avoid the low problem of the area utilization that caused battery is set of the single first thin grid line.Preferably, first direction is perpendicular to second direction.The second thin grid line 13 and the 3rd thin grid line 14, except top is arranged, also can carry out the layout of other form, only need to fill the blank area that the first thin grid line stays.
On battery body 10, be provided with first side edge and Second Edge edge, first side edge and Second Edge are along being oppositely arranged.In the opaco of battery body 10, be also provided with the second electrode 112.The first electrode 111 is arranged on the first edge, and the second electrode 112 is arranged on the second edge.Preferably, the first electrode 111 and the second electrode 112 lay respectively at the middle part on first side edge and Second Edge edge.This set of the first electrode 111 and the second electrode 112, when the first electrode 111 on the solar cell with other or the second electrode 112 are connected, the impact of the light-receiving area of sunny slope is reduced to minimum, the loss causing when avoiding connecting the first electrode 111 in adjacent solar battery or the second electrode 112.For reducing the area of the first electrode 111 and the second electrode 112, the first electrode 111 and the second electrode 112 are preferably point electrode setting.Preferably, the second above-mentioned thin grid line is perpendicular to first side edge.
Preferably, as shown in Figures 4 to 6, the interior sunny slope of each battery body 10 comprises a first He Liangge Second Region, district, this firstth district is arranged between two Second Regions, above-mentioned First Line 121 and the second thin grid line 13 are distributed in the firstth district, the second line 122 and the 3rd thin grid line 14 are distributed in Second Region, so that the area of battery body 10 maximizes the use.
In sunny slope, be also provided be positioned at first of the firstth district connect grid line 15 be positioned at Second Region second be connected grid line 16, wherein, second end of each second thin grid line 13 is all connected on the first connection grid line 15, and second end of each the 3rd thin grid line 14 is all connected on the thin grid line of the second connection.As shown in Figures 4 to 6, preferably, the first two ends that connect grid line 15 are connected on the First Line 121 of outermost end of corresponding side.The second two ends that connect grid line 16 are connected on the first electrode 111 and the 3rd thin grid line 14.First connects grid line 15 is connected this set of grid line 16 with second, in the time of can preventing that broken string from appearring in parts of fine grid line, still have collection circuit that the electric current producing on thin grid line is converged to the first electrode 111 places, guarantees the collection of 111 pairs of electric currents of the first electrode.Preferably, be further collected current, in the firstth district, be also provided with many articles the 4th thin grid lines 18 and many articles the 5th thin grid lines 19.Wherein, the 4th thin grid line 18 and the second thin grid line 13 intervals arrange, and the 5th thin grid line 19 is connected between the 4th thin grid line 18 and the second thin grid line 13.The setting of the 4th thin grid line 18 and the 5th grid line 19, takes full advantage of the first thin grid line 12 and radiates the space that arranges and stay, to arrange more thin grid line in sunny slope, and then fully electric current is collected.
The arrangement of above-mentioned thin grid line except utilizing to greatest extent the area of battery body 10, is arranged more thin grid line in limited area, can also avoid the problem of the polycrystalline battery color distortion that caused by crystal boundary.Graphic designs in the first Shang He Second Region, district has flexibility, also can replace to as required other lines shape.
The silk-screen patterns when solar cell of the present embodiment need to be to printing when producing changes.Owing to having cancelled main grid line of the prior art, except saving silver slurry, the solar cell of the present embodiment is under identical power supply output, and the area of battery is less than solar cell of the prior art.Meanwhile, the solar cell of small size can also reduce the fragment rate while producing, and reduces further the production cost of solar cell.
Solar cell completes on battery matrix, and as shown in Figures 4 to 6, the division on each battery matrix has the solar cell of a plurality of the present embodiment.The division of solar cell on battery matrix can realize by laser scribing technique, on the basis of existing manufacture craft, before welding procedure, battery matrix is carried out to laser scribing processing, it is true edge edge that laser scribing need to be take an edge of battery body 10, on battery matrix, along being parallel in true edge edge and/or the direction perpendicular to true edge edge, cut apart battery matrix, to form solar cell one by one on battery matrix.Preferably, to cutting apart with nine and be divided into preferred plan cutting apart with six of the carrying out of battery matrix.Than a mode that battery matrix can only be produced a solar cell in prior art, the solar cell of the present embodiment can be produced a plurality of on a battery matrix, and the volume of the solar cell of the present embodiment is less than solar cell of the prior art.The setting of this small size has reduced battery matrix fragment rate in process of production effectively.The output voltage of the solar cell of the present embodiment is identical with the output voltage of solar cell of the prior art, but the output current of the solar cell of the present embodiment is owing to cutting apart the cause of battery matrix and be less than the output current of solar cell of the prior art.
The utility model also provides a kind of solar module, according to the embodiment of solar module, comprises the solar cell 1 of a plurality of series connection, and wherein, solar cell 1 is above-mentioned solar cell.
As shown in Figure 7, solar module also comprises framework 2, and the solar cell 1 of series connection is all arranged in framework 2.Preferably, a plurality of solar cells 1 are matrix arrangement in framework 2.In order to facilitate the connection between each solar cell, the orientation of two adjacent solar cells 1 that is positioned at same a line is contrary, when the first side of the battery body on odd column edge is positioned at the below on Second Edge edge, the first side of the battery body 10 on even column is along the top that is positioned at Second Edge edge.The arrangement mode of this solar cell 1 in assembly, can reduce the length of the connecting band between solar cell 1 in same column, and the length of the connecting band between the solar cell 1 of the ends of adjacent two row, and then reduces production costs, and convenient connection.
The solar module of the present embodiment in use, on the matrix also forming at a plurality of solar cells 1, be connected with many convergent belts, the first end of every convergent belt is all connected on first electrode 111 or the second electrode 112 of a solar cell, and the second end of each convergent belt is connected on output device.Preferably, every two convergent belts have formed an output group, between two convergent belts of each output group, are in series with one or more solar cells 1.Due to the quantity of solar cell 1 and the output voltage of output group linear, can be according to the quantity of the demand of output voltage being adjusted to the solar cell 1 of connecting between two convergent belts of each output group.The output voltage of output group be take the common voltages such as 5V, 12V, 15V, 110V and 220V as main, also can adjust according to demand the output voltage of output group.From aforementioned, the area of the solar cell that the present embodiment is used is less, and therefore, doubly, N is the quantity of the solar cell divided on every battery matrix to the N of the quantity of the solar cell connecting in framework solar cell quantity more of the prior art.Therefore the solar module of the present embodiment can produce higher output voltage.
Between convergent belt and the first electrode 111 or the second electrode 112, can adopt and be welded to connect, due to the first electrode 111 and the second electrode 112 be point electrode setting, between convergent belt and the first electrode 111 or the second electrode 112 for being preferably means of spot welds.
By aforementioned, can be learnt, the output current of each solar cell 1 is less than the output current of solar cell of the prior art, through verification experimental verification, the output current that monolithic solar cell of the prior art produces is 7A left and right, the monolithic output current of the solar cell of the present embodiment is below 1.5A, therefore, the convergent belt in the present embodiment can be selected the convergent belt that sectional area is less when selecting.According to the principle of " caloric value and electric current square be directly proportional ", less operating current also can reduce the electric energy power loss on circuit greatly.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.

Claims (9)

1. a solar cell, it is characterized in that, comprise: battery body (10), in the sunny slope of described battery body (10), be provided with first electrode (111) and many first thin grid lines, described many first thin grid lines radially distribute, described in each, the radiation initial point of the first thin grid line is all positioned at described the first electrode (111) and locates, the described first thin grid line comprises First Line (121) and the second line (122), on described battery body (10), be also provided with many second thin grid lines (13) that extend along first direction and many 3rd thin grid lines (14) that extend along second direction, the first end of the described second thin grid line (13) is connected on the end of described First Line (121), the first end of the described the 3rd thin grid line (14) is connected on described the second line (122).
2. solar cell according to claim 1, it is characterized in that, the sunny slope of described battery body (10) comprises a first He Liangge Second Region, district, described the firstth district is arranged between two described Second Regions, described First Line (121) and the described second thin grid line (13) are distributed in described the firstth district, and described the second line (122) and the described the 3rd thin grid line (14) are distributed in described Second Region.
3. solar module according to claim 2, it is characterized in that, in described the firstth district, also there are many articles the 4th thin grid lines (18) and many articles the 5th thin grid lines (19), the described the 4th thin grid line (18) and the described second thin grid line (13) interval arrange, and the described the 5th thin grid line (19) is arranged between the described the 4th thin grid line (18) and described First Line (121).
4. solar cell according to claim 2, it is characterized in that, in described the firstth district, be also provided with the first connection grid line (15), described first connects grid line (15) is connected with the second end of the second thin grid line (13) described in each, in described Second Region, be also provided with the second connection grid line (16), described second connects grid line (16) is connected with the second end of the 3rd thin grid line (14) described in each.
5. solar cell according to claim 1, it is characterized in that, described battery body (10) has first side edge and the Second Edge edge being oppositely arranged, described the first electrode (111) is arranged on described the first edge, in the opaco of described battery body (10), be also provided with the second electrode (112), described the second electrode (112) is arranged on described the second edge.
6. a solar module, is characterized in that, described solar module comprises the solar cell (1) of a plurality of series connection, and described solar cell (1) is the solar cell described in any one in claim 1 to 4.
7. solar module according to claim 6, is characterized in that, also comprises framework (2), and a plurality of described solar cells (1) are matrix distribution in described framework (2).
8. solar module according to claim 7, is characterized in that, the arranged direction of adjacent two the described solar cells (1) in same a line is contrary.
9. solar module according to claim 6, is characterized in that, also comprises many convergent belts, and the first end of described convergent belt is connected with the first electrode (111) or second electrode (112) of a described solar cell (1).
CN201320364497.6U 2013-06-24 2013-06-24 Solar cell and solar cell assembly Active CN203491269U (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103346174A (en) * 2013-06-24 2013-10-09 英利集团有限公司 Solar cell and solar cell assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103346174A (en) * 2013-06-24 2013-10-09 英利集团有限公司 Solar cell and solar cell assembly
CN103346174B (en) * 2013-06-24 2016-12-28 英利集团有限公司 Solaode and solar module

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Effective date of registration: 20211214

Address after: 211500 No. 59 Wang Qiao Road, Xiongzhou Street, Liuhe District, Nanjing City, Jiangsu Province

Patentee after: Nanjing multi base Observation Technology Research Institute Co., Ltd

Address before: No. 3399, Chaoyang North Street, Baoding City, Hebei Province 071051

Patentee before: YINGLI Group Ltd.