CN203218271U - Solar cell sheet - Google Patents
Solar cell sheet Download PDFInfo
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- CN203218271U CN203218271U CN 201320099547 CN201320099547U CN203218271U CN 203218271 U CN203218271 U CN 203218271U CN 201320099547 CN201320099547 CN 201320099547 CN 201320099547 U CN201320099547 U CN 201320099547U CN 203218271 U CN203218271 U CN 203218271U
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- main grid
- grid
- level main
- battery sheet
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The utility model relates to a solar cell sheet comprising a crystalline silica wafer, a front face grid wire and a back face electrode. The solar cell sheet is characterized in that the front face grid wire which is arranged at a light-receiving face of a cell comprises at least two primary main grids, secondary main grids and auxiliary grids. The primary main grids are arranged in a parallel manner, each primary main grid is divided into at least two segments, the secondary main grids which are regular or irregular graphs or lines connect segmented parts of each primary main grid, and the auxiliary grids which are perpendicular to the primary main grids are evenly distributed on the light-receiving face of the cell sheet and are connected with the main grids. The solar cell sheet of the utility model is characterized in that on one hand, direct contact between main grid electrodes and the silicon wafer can be reduced, the surface passivation area is increased, and the light-receiving area of the solar cell is increased and the photoelectric conversion efficiency of the solar cell is effectively improved; and on the other hand, a silver paste consumption quantity in production processes can be effectively decreased, and the production cost can be reduced.
Description
Technical field
The utility model relates to a kind of solar cell, is specifically related to a kind of solar battery sheet, and this battery sheet has the step grate line structure.
Background technology
Developing rapidly of solar energy industry needs constantly to reduce Material Cost, improves the electricity conversion height and reduces cost of electricity-generating, reaches with civil power with valency or be lower than the target of civil power electricity price.
Current conventional crystal silicon battery is along with the development of industrialization, and conversion efficiency promotes and the cost reduction has had bigger progress.The manufacturing process of crystal silicon solar batteries sheet generally has following several steps: chemical cleaning and surface-texturing are handled, diffusion system knot, edge etching and dephosphorization silex glass, deposition antireflective coating, print electrode, sintering.Solar battery sheet is becoming transform light energy in the process of electric energy, and its inner photo-generated carrier that produces need be collected and draw by the electrode of outside printing, is connected with external circuit then, thereby electric current is transported out.Electrode by described outside printing not only can be used for collecting photo-generated carrier, and can also test solar cell, and then chooses the battery sheet of different efficient, can obtain maximum power output when making solar module.
Solar cell adopts two main grids or three main grid structures in the prior art, and the area that main grid line and secondary grid line cover on the silicon chip is bigger, and this makes the grid line shading rate of prior art reach more than 6%, has reduced the utilization ratio of solar battery sheet.In addition, need precious metal as electrocondution slurry when printing electrode, the area that main grid line and secondary grid line cover on the silicon chip also must make the use of electrocondution slurry increase greatly, therefore, causes the cost of manufacture of solar battery sheet higher.
Summary of the invention
The purpose of this utility model just provides a kind of solar battery sheet, the positive electrode structure of this battery sheet can improve light utilization and the electron collection rate of solar battery sheet effectively, improve fill factor, curve factor and the conversion efficiency of solar cell, and can reduce the cost of manufacture of solar battery sheet.
It is to comprise crystal silicon chip, front gate line, backplate that a kind of solar battery sheet of the present utility model adopts technical scheme; The sensitive surface that described front gate line is positioned at battery comprises one-level main grid, secondary main grid and secondary grid; Wherein, at least two of one-level main grids and being parallel to each other, every one-level main grid is divided at least two sections, and the secondary main grid is that rule or irregular figure or lines connect every one-level main grid segmentation place, and secondary grid are vertical with the one-level main grid and link together with main grid.
Described one-level main grid is strip or is the shape at band tip, both ends or one end.
Described secondary main grid is circular, oval, square, rhombus or irregular figure or lines.
Described secondary main grid width≤one-level main grid width.
Described backplate is in the electrode back side and corresponding to bar number and the position of positive one-level main grid.
One-level main grid and backplate are solid or are made of hollow out or segmentation pattern.
Described crystal silicon solar batteries sheet is monocrystalline, polycrystalline or accurate monocrystalline.
The beneficial effects of the utility model are: a kind of solar battery sheet of the present utility model comprises crystal silicon chip, front gate line, backplate; The sensitive surface that described front gate line is positioned at battery comprises one-level main grid, secondary main grid and secondary grid; Wherein, at least two of one-level main grids and being parallel to each other, every one-level main grid is divided at least two sections, and the secondary main grid is figure and will every one-level main grid segmentation place connection, and secondary grid are vertical with the one-level main grid and link together with main grid.
Adopt battery shading rate of the present utility model significantly to reduce, simultaneously because electrode crypto set more, collect the capability improving of electronics, this makes the series resistance of solar battery sheet reduce, fill factor, curve factor rises, can reduce the main grid electrode on the other hand and the direct of silicon chip contacts, increase the surface passivation area, improve whole conversion efficiency then.Simultaneously, the front electrode area reduces, and the printing weight of anodal silver slurry also decreases, and has reduced the manufacturing cost of solar battery sheet then.For reaching the same valency of civil power, promote this green novel energy source of solar energy and replace traditional energy that deep meaning is arranged.
Description of drawings:
Figure 1 shows that the solar battery sheet structural representation of embodiment 1 of the present utility model;
Figure 2 shows that the solar battery sheet structural representation of embodiment 2 of the present utility model;
Figure 3 shows that the solar battery sheet structural representation of embodiment 3 of the present utility model;
Figure 4 shows that the solar battery sheet structural representation of embodiment 4 of the present utility model;
Figure 5 shows that the solar battery sheet structural representation of embodiment 5 of the present utility model;
Figure 6 shows that the solar battery sheet structural representation of embodiment 6 of the present utility model.
Among the figure, 1. one-level main grid; 2. secondary main grid; 3. secondary grid.
Embodiment:
In order to understand the utility model better, below in conjunction with accompanying drawing and example the technical solution of the utility model is described, but the utility model is not limited thereto.
A kind of solar battery sheet of the present utility model comprises crystal silicon chip, front gate line, backplate; The sensitive surface that described front gate line is positioned at battery comprises one-level main grid 1, secondary main grid 2 and secondary grid 3; Wherein, 1 at least two of one-level main grid and being parallel to each other, every one-level main grid 1 is divided at least two sections, and secondary main grid 2 is that rule or irregular figure or lines connect every one-level main grid 1 segmentation place, and secondary grid 3 and one-level main grid 1 are vertical and link together with main grid.
Described one-level main grid 1 is strip or is the shape at band tip, both ends or one end.
Described secondary main grid 2 is circular, oval, square, rhombus or irregular figure.
Described secondary main grid 2 width≤one-level main grid 1 width.
Described backplate is in the electrode back side and corresponding to bar number and the position of positive one-level main grid 1.
One-level main grid 1 and backplate are solid or are made of hollow out or segmentation pattern.
Described crystal silicon solar batteries sheet is monocrystalline, polycrystalline or accurate monocrystalline.
Embodiment 1
Select 156 monocrystalline silicon piece batteries, the front gate line structure comprises: one-level main grid 1, secondary main grid 2 and secondary grid 3; Wherein, one-level main grid 1 has two and be parallel to each other, and three sections of every one-level main grids 1 minute, secondary main grid 2 are square and each squarely connects every one-level main grid 1 segmentation place respectively, and secondary grid 3 and one-level main grid 1 are vertical and be evenly distributed on battery sheet front; Described secondary main grid width≤one-level main grid width.Two of backplates, shape and structure is corresponding to positive one-level main grid 1.
Select 156 polysilicon chip batteries, the front gate line structure comprises: one-level main grid 1, secondary main grid 2 and secondary grid 3; Wherein, one-level main grid 1 has two and be parallel to each other, the two sections settings in 1 fen of every one-level main grid, and secondary main grid 2 is to connect perpendicular to " day " shape of main grid direction and with 1 segmentation place of one-level main grid, secondary grid 3 and one-level main grid 1 are vertical and be evenly distributed on battery sheet front; Described secondary main grid width≤one-level main grid width.Two of backplates, is shape and structure right corresponding to positive one-level main grid 1(?).
Select 125 monocrystalline silicon piece batteries, the front gate line structure comprises: one-level main grid 1, secondary main grid 2 and secondary grid 3; Wherein, one-level main grid 1 has two and be parallel to each other, two sections of every one-level main grids 1 minute, secondary main grid 2 be circular and each circular respectively will every one-level main grid 1 segmentation place connection, secondary grid 3 and one-level main grid 1 are vertical and be evenly distributed on battery sheet front; Described secondary main grid width≤one-level main grid width.Two of backplates, shape and structure is corresponding to positive one-level main grid 1.
Embodiment 4
Select 125 polysilicon chip batteries, the front gate line structure comprises: one-level main grid 1, secondary main grid 2 and secondary grid 3; Wherein, one-level main grid 1 has two and be parallel to each other, and two sections of every one-level main grids 1 minute, secondary main grid 2 are square and each squarely connects every one-level main grid 1 segmentation place respectively, and secondary grid 3 and one-level main grid 1 are vertical and be evenly distributed on battery sheet front; Described secondary main grid width≤one-level main grid width.Two of backplates, shape and structure is corresponding to positive one-level main grid 1.
Embodiment 5
Select 156 quasi-monocrystalline silicon sheet batteries, the front gate line structure comprises: one-level main grid 1, secondary main grid 2 and secondary grid 3; Wherein, one-level main grid 1 has two and be parallel to each other, two sections of every one-level main grids 1 minute, and secondary main grid 2 is two continuous " worker " shapes and 1 segmentation place of one-level main grid is connected, and secondary grid 3 and one-level main grid 1 are vertical and be evenly distributed on battery sheet front; Described secondary main grid width≤one-level main grid width.Three of backplates, shape and structure is corresponding to positive one-level main grid 1.
Embodiment 6
Select 156 quasi-monocrystalline silicon sheet batteries, the front gate line structure comprises: one-level main grid 1, secondary main grid 2 and secondary grid 3; Wherein, one-level main grid 1 has two and be parallel to each other, the three sections settings in 1 fen of every one-level main grid, secondary main grid 2 connects 1 each segmentation place of one-level main grid respectively for the circular of sealing and with each circle, and secondary grid 3 and one-level main grid 1 are vertical and be evenly distributed on battery sheet front; Described secondary main grid width≤one-level main grid width.Three of backplates, shape and structure is corresponding to positive one-level main grid 1.
Claims (7)
1. a solar battery sheet comprises crystal silicon chip, front gate line, backplate; It is characterized in that the sensitive surface that described front gate line is positioned at battery comprises one-level main grid, secondary main grid and secondary grid; Wherein, at least two of one-level main grids and being parallel to each other, every one-level main grid is divided at least two sections, and the secondary main grid is that rule or irregular figure or lines connect every one-level main grid segmentation place, and secondary grid are vertical with the one-level main grid and link together with main grid.
2. a kind of solar battery sheet according to claim 1, it is characterized in that: described one-level main grid is strip or is the shape at band tip, both ends or one end.
3. a kind of solar battery sheet according to claim 1 is characterized in that: described secondary main grid is circular, oval, square, rhombus or irregular figure or lines.
4. a kind of solar battery sheet according to claim 1 is characterized in that: described secondary main grid width≤one-level main grid width.
5. a kind of solar battery sheet according to claim 1 is characterized in that: described backplate is in the electrode back side and corresponding to bar number and the position of positive one-level main grid.
6. a kind of solar battery sheet according to claim 1 is characterized in that: one-level main grid and backplate are solid or are made of hollow out or segmentation pattern.
7. a kind of solar battery sheet according to claim 1, it is characterized in that: described crystal silicon solar batteries sheet is monocrystalline, polycrystalline or accurate monocrystalline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320099547 CN203218271U (en) | 2013-03-05 | 2013-03-05 | Solar cell sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320099547 CN203218271U (en) | 2013-03-05 | 2013-03-05 | Solar cell sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203218271U true CN203218271U (en) | 2013-09-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320099547 Expired - Fee Related CN203218271U (en) | 2013-03-05 | 2013-03-05 | Solar cell sheet |
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| CN (1) | CN203218271U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103117314A (en) * | 2013-03-05 | 2013-05-22 | 山东力诺太阳能电力股份有限公司 | Solar cell piece |
-
2013
- 2013-03-05 CN CN 201320099547 patent/CN203218271U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103117314A (en) * | 2013-03-05 | 2013-05-22 | 山东力诺太阳能电力股份有限公司 | Solar cell piece |
| CN103117314B (en) * | 2013-03-05 | 2016-01-06 | 山东力诺太阳能电力股份有限公司 | Solar battery sheet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130925 Termination date: 20210305 |