CN211088284U - Novel solar cell electrode - Google Patents
Novel solar cell electrode Download PDFInfo
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- CN211088284U CN211088284U CN201922111600.6U CN201922111600U CN211088284U CN 211088284 U CN211088284 U CN 211088284U CN 201922111600 U CN201922111600 U CN 201922111600U CN 211088284 U CN211088284 U CN 211088284U
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- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract description 16
- 229910052709 silver Inorganic materials 0.000 abstract description 16
- 239000004332 silver Substances 0.000 abstract description 16
- 238000006243 chemical reaction Methods 0.000 abstract description 9
- 238000007639 printing Methods 0.000 description 18
- 238000007650 screen-printing Methods 0.000 description 10
- 238000013461 design Methods 0.000 description 8
- 238000002360 preparation method Methods 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model discloses a novel solar cell electrode, including the electrode mainboard, be equipped with the main grid electrode on the electrode mainboard, the main grid electrode is including being a plurality of auxiliary grids that the rectangle array distributes, and parallel arrangement just has clearance one between the adjacent auxiliary grid about, is in on the collinear and have clearance two between the adjacent auxiliary grid about, and the clearance two that is in on same upper and lower position is filled in and is equipped with the main grid, and the main grid is connected all auxiliary grids that are located its both sides, the auxiliary grid has a plurality of breakpoints along its length direction, is provided with connection structure on the breakpoint, and connection structure interconnect the auxiliary grid that separates about or the auxiliary grid that separates from top to bottom; the edge frame line is in a line segment shape and is connected with two upper and lower adjacent auxiliary grids. The solar cell electrode has the characteristics of high electric energy conversion efficiency, low silver paste unit consumption, complete overall functions and strong practicability.
Description
Technical Field
The utility model relates to a solar cell electrode makes technical field, and more specifically says, it relates to a novel solar cell electrode.
Background
The solar cell electrode is used for collecting and conducting current on the surface of the cell and is an indelible part of a solar cell process. However, the electrode is positioned on the surface of the solar cell, so that the surface position of the solar cell is occupied, the light absorption area on the surface of the cell is reduced, and the current formed by the solar light on the surface of the cell is blocked, but the current generated by the cell cannot be led out without the electrode. Therefore, the existence of the electrodes and the solar cell sheet for absorbing sunlight to generate current are indispensable to each other. Meanwhile, the wider the electrode width is, the greater the consumption of silver paste is, and the higher the battery cost is.
In order to solve or optimize the above-mentioned opposite problem, the conventional idea is as follows:
mode 1: the upgrading and transformation of the battery preparation process, for example, an IBC battery, is to prepare the electrode on the solar light receiving surface to the back surface, so that the light receiving surface is not affected by the electrode, and the battery conversion efficiency can be greatly improved. However, the IBC battery is complex in preparation process and high in preparation cost, is in the research stage since the 20 th century and the 70 th era, and has no large-batch production application.
Mode 2: the line width of the electrode auxiliary grid is narrowed, the number of the main grids is increased, and the width is narrowed. In 2010, the width of the battery grating printing screen is designed to be 65-75 mu, and the width of the silver line is 80-90 mu after the screen is printed on a battery piece. The main stream of the synchronous main grid design is 3, the width of a single grid is 1500 mu, and the width of the single grid printed on the battery piece is 1520 and 1550 mu. The consumption of the silver paste is 170-200 mg/piece. And by the end of 2018, the width of the battery secondary grid line printing screen is designed to be 26-35 mu, and the width of a silver line printed on a battery piece is 38-50 mu. The main flow of the synchronous main grid design is 5, the width of a single grid is 700 mu, and the width of the grid printed on the cell slice is 720-750 mu. The consumption of the silver paste is 85-100 mg. The narrowing of the electrode secondary grid and the main grid is benefited from the updating of the printing silver paste on one hand, but is benefited from the upgrading and upgrading of the printing screen on the more important hand. As early as 2010, the specification of the screen plate is mainly the wire diameter of a tilted screen of 400 meshes to 18 mu. And at the end of 2018, the specification of the screen printing plate mainly comprises the wire diameters of 430-13 mu of inclined mesh, 400-16 mu of 0-degree non-mesh knot and 500-16 mu of mesh. In the future, the specification of the screen printing plate can guide 480-11 mu wire diameter of the inclined net, 520-11 mu wire diameter and 0-degree 430-13 mu wire diameter without net knots. In order to realize the design of narrower line width of the printing screen plate, the silver lines printed on the battery plate can be ensured to be continuous, continuous and uniform. The trend of screen printing is to increase the screen mesh number and decrease the line diameter of the screen printing plate. And meanwhile, the plate making process is upgraded, and the non-mesh knot of the ink leakage area of the electrode secondary grid line is realized.
However, the narrowest line width of the inclined screen printing screen with 480 meshes to 11 mu line diameters and 520 meshes to 11 mu line diameters is designed to be 23 to 28 mu, the narrowest line width of the screen printing screen without the net knots is designed to be 22 to 26 mu when the inclined screen printing screen with 430 meshes to 13 mu line diameters is 0 degree, and the width of the silver line after printing is 35 to 40 mu. The line width is lower than the design, the silver line has more broken lines after printing, the uniformity of the silver line is poor, and the height fluctuation is large. This results in a reduction in the conversion efficiency of the battery and a reduction in the reliability of the assembly. In addition, in the silk screen printing plate, the printing line area has the net knots and the gauze, so that the permeation of the slurry is blocked, and the printing of finer lines is difficult to realize. Therefore, the utility model provides a novel solar cell electrode.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome not enough among the above-mentioned prior art, provide a novel solar cell electrode, this solar cell electrode has the characteristics that electric energy conversion efficiency is high, and silver thick liquid unit consumption is low.
In order to solve the technical problem, the purpose of the utility model is to realize like this: the utility model relates to a novel solar cell electrode, including the electrode mainboard, be equipped with the main grid electrode on the electrode mainboard, the main grid electrode is including being a plurality of vice bars that the rectangle array distributes, and parallel arrangement just has clearance one between upper and lower adjacent vice bars, controls to be in between adjacent vice bars on the same straight line and have clearance two, is in to be equipped with the main grid with two intussuseptions in the clearance on the upper and lower position, and the main grid is connected and is located all vice bars of its both sides, the vice grid has a plurality of breakpoints on following its length direction, is provided with connection structure on the breakpoint, connection structure interconnect controls the vice grid of separation or the vice grid of separation from top to bottom.
The utility model discloses further set up to: the edge frame line is in a line segment shape and is connected with two upper and lower adjacent auxiliary grids.
The utility model discloses further set up to: the connecting structures are mutually connected with the auxiliary grids which are separated from each other left and right, and the connecting structures are line segment-shaped, circular or rectangular.
The utility model discloses further set up to: the auxiliary grids are connected with each other and separated from each other up and down, and the connecting structures are in a linear segment shape.
The utility model discloses further set up to: and 1-3 breakpoints are arranged on the auxiliary grid between the frame line and the adjacent main grid, and the width of each breakpoint is 0.1-2 mm.
The utility model discloses further set up to: and 1-6 break points are arranged on the auxiliary grid between two adjacent main grids, and the width of the break points is 0.1-2 mm.
To sum up, the utility model discloses following beneficial effect has: the utility model relates to a novel solar cell electrode through the mode that adopts the distribution printing, separates out the vice grid line of solar cell electrode figure and prints alone, then with main grid and frame line overprinting to the vice grid line again. The main grid adopts a silk screen printing plate, the auxiliary grid line can adopt a metal plate for printing, no net knots and no gauze blocking can be realized in a line area, the design with the line width of 10-22 mu can be printed, the uniformity of the printed line is good, the height fluctuation is small, the consumption of silver paste can be reduced, and the conversion efficiency of the solar cell is improved; and so both can satisfy solar cell electrode design demand, the vice grid line metal half tone of preparation that again can be better satisfies the printing demand, realizes the printing of more meticulous lines, reaches the electric energy conversion efficiency height, and silver thick liquid unit consumption is low function, and whole function is perfect, and the practicality is strong.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic structural diagram of the present invention for embodying a connecting structure;
fig. 3 is a schematic structural diagram of another connection structure according to the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the following description of the preferred embodiments of the present invention is provided in conjunction with the specific examples, but it should be understood that these descriptions are only for the purpose of further illustrating the features and advantages of the present invention, and are not intended to limit the patent requirements of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The invention will be further described with reference to the accompanying drawings and preferred embodiments.
Referring to fig. 1 to 3, the novel solar cell electrode according to the present embodiment includes an electrode main plate, a main grid electrode 100 is disposed on the electrode main plate, the main grid electrode 100 includes a plurality of sub-grids 10 distributed in a rectangular array, a gap i 11 is disposed between upper and lower adjacent sub-grids 10 in parallel, a gap ii 12 is disposed between left and right adjacent sub-grids 10 on the same straight line, a main grid 20 is filled in the gap ii 12 on the same upper and lower positions, the main grid 20 is connected to all sub-grids 10 located on two sides of the main grid 20, the sub-grids 10 have a plurality of break points 13 along the length direction thereof, the break points 13 are provided with connection structures 14, and the connection structures 14 are connected to the left and right separated sub-grids 10 or the up and down separated sub-grids 10.
Furthermore, the side frame wire 30 is arranged at the end part of the auxiliary grid 10 at the outermost side, and the side frame wire 30 is in a line segment shape and is connected with two adjacent upper and lower auxiliary grids 10.
Further, the connection structures 14 connect the sub-grids 10 separated from each other in the left-right direction, and the connection structures 10 are in various shapes such as line segments, circles, rectangles, and the like.
Further, the connecting structures 14 connect the sub-grids 10 separated from each other up and down, and the connecting structures 10 are in the shape of straight line segments and other various figures for realizing the same connecting function.
Furthermore, 1-3 break points 13 are arranged on the auxiliary grid 10 between the frame line 30 and the adjacent main grid 20, and the width of the break points 13 is 0.1-2 mm.
Furthermore, 1-6 break points 13 are arranged on the auxiliary grid 10 between two adjacent main grids 20, and the width of the break points 13 is 0.1-2 mm.
In this embodiment, when the sub-grid 10 is printed, the break points 13 are intermittently arranged on the sub-grid 10 to make the lines of the sub-grid 10 uniform, and the connection structures 14 are arranged on the break points 13 for connecting the adjacent left-right separated sub-grids 10 or the adjacent up-down separated sub-grids 10; and the end part of the auxiliary grid 10 at the outermost side is provided with a line-segment-shaped frame line 30 for connecting two adjacent upper and lower auxiliary grids 10 to realize the printing of the main grid electrode 100, so that the purposes of multiple line segments, good uniformity and small height fluctuation are achieved, the conversion efficiency of the battery is high, and the reliability of the assembly is improved.
The utility model relates to a novel solar cell electrode through the mode that adopts the distribution printing, separates out the vice grid line of solar cell electrode figure and prints alone, then with main bars, frame line, vice bars breakpoint connection structure overprinting to the vice grid line again. The main grid adopts a silk screen printing plate, the auxiliary grid line can adopt a metal plate for printing, no net knots and no gauze blocking can be realized in a line area, the design with the line width of 10-22 mu can be printed, the uniformity of the printed line is good, the height fluctuation is small, the consumption of silver paste can be reduced, and the conversion efficiency of the solar cell is improved; and so both can satisfy solar cell electrode design demand, the vice grid line metal half tone of preparation that again can be better satisfies the printing demand, realizes the printing of more meticulous lines, reaches the electric energy conversion efficiency height, and silver thick liquid unit consumption is low function, and whole function is perfect, and the practicality is strong.
Unless otherwise specified, in the present invention, if the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate an orientation or positional relationship based on the actual orientation or positional relationship shown, it is only for convenience of describing the present invention and simplifying the description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the terms describing orientation or positional relationship in the present invention are used for illustrative purposes only, and should not be construed as limiting the present patent, it is possible for those skilled in the art to combine the embodiments and understand the specific meanings of the above terms according to specific situations.
Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass both fixed and removable connections, or integral connections; the connection may be direct or indirect via an intermediate medium, and may be a communication between the two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (6)
1. The utility model provides a novel solar cell electrode, includes the electrode mainboard, is equipped with main grid electrode on the electrode mainboard, its characterized in that: the main grid electrode comprises a plurality of auxiliary grids distributed in a rectangular array, a first gap is formed between the upper and lower adjacent auxiliary grids in a parallel mode, a second gap is formed between the left and right adjacent auxiliary grids on the same straight line, the main grids are filled in the second gaps in the upper and lower positions, the main grids are connected with all the auxiliary grids located on the two sides of the main grids, a plurality of breakpoints are formed in the auxiliary grids along the length direction of the auxiliary grids, connecting structures are arranged on the breakpoints, and the auxiliary grids separated left and right or the auxiliary grids separated up and down are connected with each other through the connecting structures.
2. The novel solar cell electrode of claim 1, wherein: the edge frame line is in a line segment shape and is connected with two upper and lower adjacent auxiliary grids.
3. The novel solar cell electrode according to claim 1 or 2, characterized in that: the connecting structures are mutually connected with the auxiliary grids which are separated from each other left and right, and the connecting structures are line segment-shaped, circular or rectangular.
4. The novel solar cell electrode according to claim 1 or 2, characterized in that: the auxiliary grids are connected with each other and separated from each other up and down, and the connecting structures are in a linear segment shape.
5. The novel solar cell electrode of claim 2, wherein: and 1-3 breakpoints are arranged on the auxiliary grid between the frame line and the adjacent main grid, and the width of each breakpoint is 0.1-2 mm.
6. The novel solar cell electrode of claim 2, wherein: and 1-6 break points are arranged on the auxiliary grid between two adjacent main grids, and the width of the break points is 0.1-2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922111600.6U CN211088284U (en) | 2019-11-30 | 2019-11-30 | Novel solar cell electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922111600.6U CN211088284U (en) | 2019-11-30 | 2019-11-30 | Novel solar cell electrode |
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| Publication Number | Publication Date |
|---|---|
| CN211088284U true CN211088284U (en) | 2020-07-24 |
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| CN201922111600.6U Active CN211088284U (en) | 2019-11-30 | 2019-11-30 | Novel solar cell electrode |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114709276A (en) * | 2022-03-31 | 2022-07-05 | 上饶捷泰新能源科技有限公司 | Method for printing solar cell step by step and solar cell |
| CN117374136A (en) * | 2023-12-07 | 2024-01-09 | 无锡华晟光伏科技有限公司 | Solar cell, manufacturing method thereof and solar cell module |
| CN117936606A (en) * | 2024-03-21 | 2024-04-26 | 晶科能源(海宁)有限公司 | Solar cell and photovoltaic module |
-
2019
- 2019-11-30 CN CN201922111600.6U patent/CN211088284U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114709276A (en) * | 2022-03-31 | 2022-07-05 | 上饶捷泰新能源科技有限公司 | Method for printing solar cell step by step and solar cell |
| CN117374136A (en) * | 2023-12-07 | 2024-01-09 | 无锡华晟光伏科技有限公司 | Solar cell, manufacturing method thereof and solar cell module |
| CN117374136B (en) * | 2023-12-07 | 2024-03-01 | 无锡华晟光伏科技有限公司 | Solar cell, manufacturing method thereof and solar cell module |
| CN117936606A (en) * | 2024-03-21 | 2024-04-26 | 晶科能源(海宁)有限公司 | Solar cell and photovoltaic module |
| CN117936606B (en) * | 2024-03-21 | 2024-08-09 | 晶科能源(海宁)有限公司 | Solar cell and photovoltaic module |
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Address after: 314000 room 529, building 11, standard workshop, plot a-02, phase II Industrial Zone, Tongxiang Economic Development Zone, Jiaxing City, Zhejiang Province Patentee after: Zhejiang Shuoke Technology Co.,Ltd. Country or region after: China Address before: 314000 room 529, building 11, standard workshop, plot a-02, phase II Industrial Zone, Tongxiang Economic Development Zone, Jiaxing City, Zhejiang Province Patentee before: ZHEJIANG SHUOKE SCIENCE & TECHNOLOGY Co.,Ltd. Country or region before: China |