CN203617305U - Grid line structure of solar cell - Google Patents
Grid line structure of solar cell Download PDFInfo
- Publication number
- CN203617305U CN203617305U CN201320862267.2U CN201320862267U CN203617305U CN 203617305 U CN203617305 U CN 203617305U CN 201320862267 U CN201320862267 U CN 201320862267U CN 203617305 U CN203617305 U CN 203617305U
- Authority
- CN
- China
- Prior art keywords
- main grid
- grid line
- solid
- solar cell
- segmentation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000007787 solid Substances 0.000 claims abstract description 59
- 238000003466 welding Methods 0.000 claims abstract description 11
- 230000011218 segmentation Effects 0.000 claims description 42
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 239000002002 slurry Substances 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 description 9
- 238000004513 sizing Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000013083 solar photovoltaic technology Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Abstract
The utility model discloses a grid line structure of a solar cell. The grid line structure comprises main grid lines and auxiliary grid lines, the main grid lines comprises at least one hollow main grid line located on a light-receiving surface of the solar cell and at least two solid main grid lines electrically connected with welding zones, each hollow main grid line is provided with solid welding sections which are located at end parts of the corresponding hollow main grid line and a plurality of hollow subsections which have hollow structures and are arranged in a sectioned manner, and each disconnected part between corresponding adjacent hollow subsections is located in a blank area of the two corresponding adjacent auxiliary grid lines. According to the grid line structure, the dosage of material slurry is reduced, the series resistance is also reduced, and conversion efficiency of the cell is improved.
Description
Technical field
The utility model relates to a kind of grid line structure of solar cell, belongs to solar-photovoltaic technology field.
Background technology
At present, positive electrode design mostly is the design of segmentation hollow type, although this design has reduced the consumption of slurry, has increased widely the conduction of electric current, has virtually increased resistance, and the while, grid line broken string was day by day serious along with thin grid line is growing; In order to obtain high as far as possible photoelectric conversion efficiency, must carry out detailed design to the structure of battery, and the principle that when design need to be considered has:
1, how to reduce incident reflection of light and transmission loss;
2, how to make photo-generated carrier be collected by P-n knot as much as possible, so that photoelectric current maximum, dark current minimum;
3, the design of the electric current collection grid line of power loss minimum.
Although and the design of present kind electrode has reduced the light-receiving area of silion cell, increased the series resistance of cell piece, the transformation efficiency of silicon chip produced to very large impact.Although can reduce series resistance by the very high and very narrow sectional area that grid line is done now, increase like this use amount of slurry, increase manufacturing cost.
Summary of the invention
Technical problem to be solved in the utility model is the defect that overcomes prior art, and a kind of grid line structure of solar cell is provided, and it has not only reduced usage of sizing agent, and has reduced series resistance, has improved the conversion efficiency of battery.
In order to solve the problems of the technologies described above, the technical solution of the utility model is: a kind of grid line structure of solar cell, it comprises main grid line and secondary grid line, main grid line comprises at least one hollow out main grid line being positioned on solar cell sensitive surface and at least two solid main grid lines that are electrically connected with welding, hollow out main grid line has the solid welding section and the multiple hollow out segmentation that is provided with engraved structure and is segmentation shape layout that are positioned at its end, and the breaking part between adjacent hollow out segmentation is positioned at the white space of two adjacent secondary grid lines.
Further, in order to reduce better usage of sizing agent, the width of described solid welding section reduces gradually on the end direction of hollow out main grid line.
Further, described hollow out main grid line is three, and described solid main grid line is eight, and take two solid main grid lines and a hollow out main grid line as base unit, becomes array-like to be side by side arranged on solar cell sensitive surface.
Further in order to increase the collection probability of grid line to minority carrier, and further reduce usage of sizing agent, in described solid main grid line, two solid main grid lines that are positioned at the each outermost end of solar cell sensitive surface respectively are the first solid main grid line and the second solid main grid line, the first solid main grid line is made up of multiple the first main grid segmentations that are segmentation shape layout, the second solid main grid line is made up of multiple the second main grid segmentations that are segmentation shape layout, thereby the interlaced connection of the first adjacent main grid segmentation and the second main grid segmentation forms a complete solid main grid line.
Further, in described solid main grid line, two solid main grid lines that are positioned at the each outermost end of solar cell sensitive surface respectively are the first solid main grid line and the second solid main grid line, the first solid main grid line is made up of multiple the first main grid segmentations that are segmentation shape layout, the second solid main grid line is made up of multiple the second main grid segmentations that are segmentation shape layout, thereby the interlaced connection of the first adjacent main grid segmentation and the second main grid segmentation forms a complete solid main grid line, all the other four solid main grid lines are respectively continuous shape and arrange.
Adopt after technique scheme, the utility model is by the combining structure of hollow out main grid line and solid main grid line, guarantee the quantity of main grid line, reduced series resistance simultaneously, and hollow out main grid line has reduced usage of sizing agent, and the breaking part between adjacent hollow out segmentation is positioned at the white space of two adjacent secondary grid lines, do not increase the distance that secondary grid line is pooled to main grid line, thereby do not increase series resistance, reduce manufacturing cost, and easy to use, be conducive in industry promote; In addition, two solid main grid lines of the outermost end by mutual complementation, make the utility model take full advantage of the advantage of high square resistance in the middle of cell substrate, have increased the collection probability of grid line to minority carrier, and can further reduce usage of sizing agent.
Accompanying drawing explanation
Fig. 1 is the structural representation of the grid line structure of solar cell of the present utility model;
Fig. 2 is the A portion enlarged diagram of Fig. 1.
Embodiment
For content of the present utility model is more easily expressly understood, according to specific embodiment also by reference to the accompanying drawings, the utility model is described in further detail below,
As shown in Figure 1, 2, a kind of grid line structure of solar cell, it comprises main grid line 1 and secondary grid line 2, main grid line 1 comprises at least one hollow out main grid line 1-1 being positioned on solar cell sensitive surface and at least two solid main grid line 1-2 that are electrically connected with welding, hollow out main grid line 1-1 has the solid welding section 1-1-1 and the multiple hollow out segmentation 1-1-2 that is provided with engraved structure and is segmentation shape layout that are positioned at its end, and the breaking part between adjacent hollow out segmentation 1-1-2 is positioned at the white space of two adjacent secondary grid lines 2.
In order to reduce better usage of sizing agent, as shown in Figure 2, the width of solid welding section 1-1-1 reduces gradually on the end direction of hollow out main grid line 1-1.
As shown in Figure 1, hollow out main grid line 1-1 is three, and solid main grid line 1-2 is eight, and take two solid main grid line 1-2 and a hollow out main grid line 1-1 as base unit, becomes array-like to be side by side arranged on solar cell sensitive surface.
In order to increase the collection probability of grid line to minority carrier, and further reduce usage of sizing agent, as shown in Figure 1, in solid main grid line 1-2, two solid main grid line 1-2 that are positioned at the each outermost end of solar cell sensitive surface respectively are the first solid main grid line and the second solid main grid line, the first solid main grid line is made up of multiple the first main grid segmentation 1-2-1 that are segmentation shape layout, the second solid main grid line is made up of multiple the second main grid segmentation 1-2-2 that are segmentation shape layout, thereby the interlaced connection of the first adjacent main grid segmentation 1-2-1 and the second main grid segmentation 1-2-2 forms a complete solid main grid line 1-2.All the other four solid main grid line 1-2 are respectively continuous shape and arrange.
Operation principle of the present utility model is as follows:
The utility model is by the combining structure of hollow out main grid line 1-1 and solid main grid line 1-2, guarantee the quantity of main grid line, reduced series resistance simultaneously, and hollow out main grid line 1-1 has reduced usage of sizing agent, and breaking part between adjacent hollow out segmentation 1-1-2 is positioned at the white space of two adjacent secondary grid lines 2, do not increase secondary grid line 2 and be pooled to the distance of main grid line, thereby do not increase series resistance, reduce manufacturing cost, and easy to use, be conducive in industry promote; In addition, two solid main grid line 1-2 of the outermost end by mutual complementation, make the utility model take full advantage of the advantage of high square resistance in the middle of cell substrate, have increased the collection probability of grid line to minority carrier, and can further reduce usage of sizing agent.
Above-described specific embodiment; technical problem, technical scheme and beneficial effect that the utility model is solved further describe; institute is understood that; the foregoing is only specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (5)
1. the grid line structure of a solar cell, it is characterized in that: it comprises main grid line (1) and secondary grid line (2), main grid line (1) comprises at least one hollow out main grid line (1-1) being positioned on solar cell sensitive surface and at least two solid main grid lines (1-2) that are electrically connected with welding, hollow out main grid line (1-1) has the solid welding section (1-1-1) and the multiple hollow out segmentation (1-1-2) that is provided with engraved structure and is segmentation shape layout that are positioned at its end, breaking part between adjacent hollow out segmentation (1-1-2) is positioned at the white space of two adjacent secondary grid lines (2).
2. the grid line structure of solar cell according to claim 1, is characterized in that: the width of described solid welding section (1-1-1) reduces gradually on the end direction of hollow out main grid line (1-1).
3. the grid line structure of solar cell according to claim 1, it is characterized in that: described hollow out main grid line (1-1) is three, described solid main grid line (1-2) is eight, and take two solid main grid lines (1-2) and a hollow out main grid line (1-1) as base unit, become array-like to be side by side arranged on solar cell sensitive surface.
4. the grid line structure of solar cell according to claim 1, it is characterized in that: in described solid main grid line (1-2), the two solid main grid lines (1-2) that are positioned at the each outermost end of solar cell sensitive surface respectively are the first solid main grid line and the second solid main grid line, the first solid main grid line is made up of multiple the first main grid segmentations (1-2-1) that are segmentation shape layout, the second solid main grid line is made up of multiple the second main grid segmentations (1-2-2) that are segmentation shape layout, the first adjacent main grid segmentation (1-2-1) and the second main grid segmentation (1-2-2) thus interlaced connection form a complete solid main grid line (1-2).
5. the grid line structure of solar cell according to claim 3, it is characterized in that: in described solid main grid line (1-2), the two solid main grid lines (1-2) that are positioned at the each outermost end of solar cell sensitive surface respectively are the first solid main grid line and the second solid main grid line, the first solid main grid line is made up of multiple the first main grid segmentations (1-2-1) that are segmentation shape layout, the second solid main grid line is made up of multiple the second main grid segmentations (1-2-2) that are segmentation shape layout, the first adjacent main grid segmentation (1-2-1) and the second main grid segmentation (1-2-2) thus interlaced connection form a complete solid main grid line (1-2), all the other four solid main grid lines (1-2) are respectively continuous shape and arrange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320862267.2U CN203617305U (en) | 2013-12-25 | 2013-12-25 | Grid line structure of solar cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320862267.2U CN203617305U (en) | 2013-12-25 | 2013-12-25 | Grid line structure of solar cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203617305U true CN203617305U (en) | 2014-05-28 |
Family
ID=50769929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320862267.2U Expired - Lifetime CN203617305U (en) | 2013-12-25 | 2013-12-25 | Grid line structure of solar cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203617305U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332507A (en) * | 2014-10-24 | 2015-02-04 | 无锡帝科电子材料科技有限公司 | Cross positive electrode screen printing graph |
| CN104576781A (en) * | 2015-01-27 | 2015-04-29 | 苏州阿特斯阳光电力科技有限公司 | Solar cell |
| CN106601832A (en) * | 2015-10-15 | 2017-04-26 | 浙江鸿禧能源股份有限公司 | Main grid line structure of solar cell piece |
| CN106784045B (en) * | 2016-12-28 | 2019-05-07 | 中国电子科技集团公司第十八研究所 | A kind of multistage grid line layout structure and method of solar cell |
| US20230123997A1 (en) * | 2021-10-18 | 2023-04-20 | Zhejiang Jinko Solar Co., Ltd. | Solar cell and photovoltaic module |
-
2013
- 2013-12-25 CN CN201320862267.2U patent/CN203617305U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332507A (en) * | 2014-10-24 | 2015-02-04 | 无锡帝科电子材料科技有限公司 | Cross positive electrode screen printing graph |
| CN104576781A (en) * | 2015-01-27 | 2015-04-29 | 苏州阿特斯阳光电力科技有限公司 | Solar cell |
| CN106601832A (en) * | 2015-10-15 | 2017-04-26 | 浙江鸿禧能源股份有限公司 | Main grid line structure of solar cell piece |
| CN106784045B (en) * | 2016-12-28 | 2019-05-07 | 中国电子科技集团公司第十八研究所 | A kind of multistage grid line layout structure and method of solar cell |
| US20230123997A1 (en) * | 2021-10-18 | 2023-04-20 | Zhejiang Jinko Solar Co., Ltd. | Solar cell and photovoltaic module |
| US11848392B2 (en) * | 2021-10-18 | 2023-12-19 | Zhejiang Jinko Solar Co., Ltd. | Solar cell and photovoltaic module |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203617305U (en) | Grid line structure of solar cell | |
| CN102779861B (en) | Electrode structure with grid lines on front surface | |
| CN102610668A (en) | Improved electrode structure of solar cell | |
| CN202502998U (en) | Solar cell and solar cell panel | |
| CN203423193U (en) | MWT solar cell | |
| CN203752663U (en) | Solar cell front electrode screen printing plate | |
| CN204596801U (en) | A kind of N-type double-sided solar battery sheet of many main grids | |
| CN201796897U (en) | Front contact structure of crystalline silicon solar cell | |
| CN102544128B (en) | Solar cell | |
| CN103545386A (en) | Solar cell electrode shape | |
| CN203055923U (en) | Solar cell front face grid line and solar cell sheet printed with same | |
| CN203085565U (en) | Novel solar battery positive electrode | |
| CN107146822B (en) | Solar cell capable of being connected at will without broken grid | |
| CN206619601U (en) | A kind of improved solar battery sheet of grid line structure | |
| CN202183381U (en) | Cell plate for solar cell pack with low shading area and high current collection | |
| CN203150564U (en) | Solar cell front face grid line segmented cell piece | |
| CN202957258U (en) | Crystalline silicon solar battery and front side electrode thereof | |
| CN203250750U (en) | Solar cell with sectional main grid lines | |
| CN203521432U (en) | Electrode structure of solar cell sheet | |
| CN204516780U (en) | Cell piece front gate line structure | |
| CN203013743U (en) | Crystalline silica solar right side main grid electrode | |
| CN203218271U (en) | Solar cell sheet | |
| CN204792813U (en) | Brilliant silicon solar cell positive electrode and solar cell | |
| CN103117314B (en) | Solar battery sheet | |
| CN202183384U (en) | Grid structure of solar cell |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Solar photovoltaic industry park Tianhe Road 213031 north of Jiangsu Province, Changzhou City, No. 2 Patentee after: TRINA SOLAR Co.,Ltd. Address before: Solar photovoltaic industry park Tianhe Road 213031 north of Jiangsu Province, Changzhou City, No. 2 Patentee before: trina solar Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Solar photovoltaic industry park Tianhe Road 213031 north of Jiangsu Province, Changzhou City, No. 2 Patentee after: trina solar Ltd. Address before: Tianhe Electronic Industrial Park Road 213022 north of Jiangsu Province, Changzhou City, No. 2 Patentee before: CHANGZHOU TRINA SOLAR ENERGY Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140528 |