CN203118962U - Sectional solar battery positive electrode structure - Google Patents
Sectional solar battery positive electrode structure Download PDFInfo
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- CN203118962U CN203118962U CN 201320141049 CN201320141049U CN203118962U CN 203118962 U CN203118962 U CN 203118962U CN 201320141049 CN201320141049 CN 201320141049 CN 201320141049 U CN201320141049 U CN 201320141049U CN 203118962 U CN203118962 U CN 203118962U
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Abstract
The utility model discloses a sectional solar battery positive electrode structure, which comprises main grid lines and a plurality of fine grid lines (3) which are vertical to the main grid lines, wherein the main grid lines are of a sectional structure, and comprise at least two segments of primary main grid lines (21) and at least one segment of secondary main grid lines (22), the primary main grid lines (21) and the secondary main grid lines (22) are connected with the fine grid line (3), adjacent primary main grid lines (21) are connected through the secondary main grid lines (22), the number of the main grid lines at least is four, and the widths of the secondary main grid lines (22) are 20 micron-1mm. The sectional solar battery positive electrode structure can save dosage of sizing agent, and reduces making cost of batteries.
Description
Technical field
The utility model relates to a kind of solar cell, relates in particular to a kind of segmented front electrode of solar battery structure.
Background technology
Along with the development constantly of photovoltaic industry, have higher requirement to the photovoltaic product in market, not only will pursue higher conversion efficiency, and the manufacturing cost of battery sheet has also been proposed requirements at the higher level.
At present, the electrode preparation of battery sheet mainly adopts screen printing technique, for improving conductivity and the solderability of electrode, front electrode prepares the electrocondution slurry that adopts noble metal silvery to be equipped with, and this makes electrode preparation become and removes the silicon chip cost main part of battery sheet preparation cost in addition.As shown in Figure 1, H shape figure is the main front electrode structure of present silk screen printing, it comprises 3 main grid lines 2 and many thin grid lines 3 perpendicular to the main grid line that are arranged on silicon chip 1 front, wherein thin grid line plays collected current, the electric current of collecting is aggregated on the main grid line, and the main grid line also plays the effect that is welded into assembly except the electric current that compiles thin grid line collection.
Power loss during for minimizing main grid collected current, the way of mainly taking at present is the quantity that increases the main grid line.In addition, for reducing the shading area and reducing the power loss that grid line resistance causes, main way is the depth-width ratio that increases thin grid line at present, and when improving thin grid line height, main grid line height also will improve, the excessive raising of main grid line height not only can not bring corresponding benefit for current delivery, electrode hidden danger such as come off in the time of can bringing flexural deformation behind the battery sheet sintering, welding on the contrary, and can cause the increase of silver slurry cost.
At present, for improving the electric current collection ability of battery sheet, can effectively reduce silver slurry cost simultaneously, prior art is by increasing the conversion efficiency that main grid quantity promotes solar cell at present; Also there is technology by making at front electrode main grid line printing zone such as triangle, circular close-shaped latex film the part coverage to be carried out in main grid line zone, blocks seeing through of electrocondution slurry, reach the slurry reduction effect, thereby reduce cost.But, in above-mentioned two kinds of methods, increase main grid and will significantly increase silver slurry consumption; And adopting the local method of covering front electrode main grid line not change the width of main grid line own and length, it is limited that slurry reduces degree.
The utility model content
The technical problems to be solved in the utility model just is: at the technical problem that prior art exists, the utility model provides a kind of segmented front electrode of solar battery structure that can effectively reduce the slurry consumption, save manufacturing cost.
For achieving the above object, a kind of segmented front electrode of solar battery structure of the present utility model, comprise that main grid line and Duo Gen are perpendicular to the thin grid line of main grid line, the main grid line is segmental structure, comprise at least 2 sections elementary main grid lines and at least 1 section secondary main grid line, elementary main grid line all links to each other with thin grid line with secondary main grid line, connects by secondary main grid line between the adjacent elementary main grid line, the quantity of above-mentioned main grid line is at least 4, and secondary main grid line width is 20 microns ~ 1 millimeter.
As further improvement of the utility model, the length ratio of above-mentioned elementary main grid line and secondary main grid line is 1:1-1:3.
Further, the elementary main grid line segment number in the above-mentioned every main grid line is the 2-100 section, evenly distributes along main grid line direction.
Further, the hop count 1-10 section of the secondary main grid line between the above-mentioned adjacent elementary main grid line.
Preferably, the quantity of above-mentioned main grid line is 4, and the elementary main grid line segment number in every main grid line is 8 sections, 3 sections of the hop counts of secondary main grid line between the adjacent elementary main grid line, and namely adjacent elementary main grid line connects by 3 sections secondary main grid lines that are parallel to each other.
Preferably, above-mentioned secondary main grid line width is 20 microns ~ 49 microns.
Preferably, above-mentioned secondary main grid line width is 501 microns ~ 1 millimeter.
The utlity model has following advantage:
1, a kind of segmented front electrode of solar battery structure of the present utility model adopts at least 4 main grid line designs, can significantly promote battery sheet collected current effect, effectively promotes battery sheet conversion efficiency;
2, the utility model adopts segmented main grid line can effectively lower main grid line slurry consumption, thereby reduces cost.
3, segmented main grid line structure of the present utility model also has the advantage of fragment being cut recycling arbitrarily, also can reduce flexural deformation and main grid line dropping situations that main grid line sintering causes in addition, saves cost.
Description of drawings
Fig. 1 is the front electrode structure of existing solar cell in the background technology;
Fig. 2 is structural representation of the present utility model;
Fig. 3 is main grid line structure schematic diagram of the present utility model.
Marginal data: 1, silicon chip; 2, main grid line; 3, thin grid line; 21, elementary main grid line; 22, secondary main grid line.
Embodiment
Below with reference to Figure of description and specific embodiment the utility model is described in further details.
As shown in Figure 2, a kind of segmented front electrode of solar battery structure of the present utility model, comprise that main grid line and Duo Gen are perpendicular to the thin grid line 3 of main grid line, the main grid line is segmental structure, comprise at least 2 sections elementary main grid lines 21 and at least 1 section secondary main grid line 22, as much as possible electric current is derived for making positive electrode, do not influence its electrical property, above-mentioned elementary main grid line 21 all links to each other with thin grid line 3 with secondary main grid line 22, connect by secondary main grid line 22 between the adjacent elementary main grid line 21, the quantity of above-mentioned main grid line is at least 4, and secondary main grid line 22 width are 20 microns ~ 1 millimeter.Solar cell main grid line of the prior art is generally the 2-3 root, in the present embodiment, adopts at least 4 main grid lines can significantly promote battery sheet collected current effect, has effectively promoted battery sheet conversion efficiency; Adopt segmented main grid line can effectively lower main grid line slurry consumption, thereby reduce cost.
On the basis of embodiment 1, for reduce electrode shading area and reduce silver slurry consumption as far as possible, the length ratio of above-mentioned elementary main grid line 21 and secondary main grid line 22 is 1:1-1:3, elementary main grid line 21 hop counts in every main grid line are the 2-100 section, evenly distribute the hop count 1-10 section of the secondary main grid line 22 between the adjacent elementary main grid line 21 along main grid line direction.
As shown in Figure 3, on above-described embodiment basis, the lifting of comprehensive battery sheet conversion efficiency and reduce by two demands of consumption of silver slurry and in conjunction with the production difficulty, the front electrode of solar battery of present embodiment comprises 4 main grid lines, comprise 8 sections elementary main grid lines in the every main grid line, adjacent elementary main grid line 21 connects by 3 sections secondary main grid lines that are parallel to each other 22, and secondary main grid line 22 live widths are between 100 microns to 500 microns.In the practical application, the quantity of secondary main grid line 22 can be adjusted according to the actual requirements, as being adjusted into the twin wire structure, namely adjacent elementary main grid line 21 connects by 2 sections secondary main grid lines that are parallel to each other 22, and secondary main grid line 22 live widths are between 100 microns to 500 microns; Also can be adjusted into the bamboo joint type structure, adjacent elementary main grid line 21 only connects by 1 section secondary main grid line 22, and secondary main grid line 22 live widths are between 200 microns to 1000 microns.Said structure makes improvements on the basis of existing front electrode of solar battery technology slightly, set up 1 segmented main grid line, both improved battery sheet conversion efficiency, reduced the silver slurry consumption of wall scroll main grid line simultaneously, compared to increasing more main grid line and bigger increase number of fragments, the production complexity of solar cell positive electrode structure is relatively low in the present embodiment.
Embodiment 4
The front electrode of solar battery of present embodiment comprises at least 4 main grid lines, comprises 50 sections elementary main grid lines in the every main grid line, and adjacent elementary main grid line 21 connects by 10 sections secondary main grid lines that are parallel to each other 22, and secondary main grid line 22 live widths are 49 microns; The length ratio of elementary main grid line 21 and secondary main grid line 22 is 1:2.
Embodiment 5
The front electrode of solar battery of present embodiment comprises at least 4 main grid lines, comprises 100 sections elementary main grid lines in the every main grid line, and adjacent elementary main grid line 21 connects by 1 section secondary main grid line 22, and secondary main grid line 22 live widths are 501 microns; The length ratio of elementary main grid line 21 and secondary main grid line 22 is 1:3.
Below only be preferred implementation of the present utility model, protection range of the present utility model also not only is confined to above-described embodiment, and all technical schemes that belongs under the utility model thinking all belong to protection range of the present utility model.Should be pointed out that for those skilled in the art the some improvements and modifications not breaking away under the utility model principle prerequisite should be considered as protection range of the present utility model.
Claims (7)
1. segmented front electrode of solar battery structure, comprise that main grid line and Duo Gen are perpendicular to the thin grid line (3) of main grid line, described main grid line is segmental structure, comprise at least 2 sections elementary main grid lines (21) and at least 1 section secondary main grid line (22), described elementary main grid line (21) all links to each other with thin grid line (3) with secondary main grid line (22), connect by secondary main grid line (22) between the adjacent elementary main grid line (21), it is characterized in that, the quantity of described main grid line is at least 4, and described secondary main grid line (22) width is 20 microns ~ 1 millimeter.
2. a kind of segmented front electrode of solar battery structure according to claim 1 is characterized in that, the length ratio of described elementary main grid line (21) and secondary main grid line (22) is 1:1-1:3.
3. a kind of segmented front electrode of solar battery structure according to claim 1 is characterized in that, elementary main grid line (21) hop count in the described every main grid line is the 2-100 section, evenly distributes along main grid line direction.
4. a kind of segmented front electrode of solar battery structure according to claim 1 is characterized in that, the hop count 1-10 section of secondary main grid line (22) between the described adjacent elementary main grid line (21).
5. according to the arbitrary described a kind of segmented front electrode of solar battery structure of claim 1 to 4, it is characterized in that, the quantity of described main grid line is 4, elementary main grid line (21) hop count in the described every main grid line is 8 sections, 3 sections of the hop counts of the secondary main grid line (22) between the described adjacent elementary main grid line (21).
6. according to the arbitrary described a kind of segmented front electrode of solar battery structure of claim 1 to 4, it is characterized in that described secondary main grid line (22) width is 20 microns ~ 49 microns.
7. according to the arbitrary described a kind of segmented front electrode of solar battery structure of claim 1 to 4, it is characterized in that described secondary main grid line (22) width is 501 microns ~ 1 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320141049 CN203118962U (en) | 2013-03-26 | 2013-03-26 | Sectional solar battery positive electrode structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320141049 CN203118962U (en) | 2013-03-26 | 2013-03-26 | Sectional solar battery positive electrode structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203118962U true CN203118962U (en) | 2013-08-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320141049 Expired - Fee Related CN203118962U (en) | 2013-03-26 | 2013-03-26 | Sectional solar battery positive electrode structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203118962U (en) |
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2013
- 2013-03-26 CN CN 201320141049 patent/CN203118962U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20130807 Termination date: 20180326 |
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| CF01 | Termination of patent right due to non-payment of annual fee |