CN202231020U - Novel bus bar of crystalline silica solar cell - Google Patents
Novel bus bar of crystalline silica solar cell Download PDFInfo
- Publication number
- CN202231020U CN202231020U CN2011203846907U CN201120384690U CN202231020U CN 202231020 U CN202231020 U CN 202231020U CN 2011203846907 U CN2011203846907 U CN 2011203846907U CN 201120384690 U CN201120384690 U CN 201120384690U CN 202231020 U CN202231020 U CN 202231020U
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- CN
- China
- Prior art keywords
- solar cell
- bus bar
- main grid
- grid electrode
- silicon solar
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- 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.)
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Abstract
The utility model relates to a novel bus bar of a crystalline silica solar cell. The bus bar is provided with a hollowed-out conductive slurry layer which comprises frames on the two sides of the bus bar, and I-shaped contact strips uniformly arranged in the center of the bus bar at equal intervals. The I-shaped contact strips and the frames are combined to be one body. The novel bus bar is of a structure that helps to prevent tin filaments from being generated on a crystalline silica solar cell sheet during welding and enables consumption of conductive silver slurry printing for the bus bar of a crystalline silica solar cell to be saved, thereby reducing the cost and improving effects.
Description
Technical field
The utility model relates to the novel main grid electrode of a kind of crystal-silicon solar cell, the novel main grid electrode of particularly a kind of crystal-silicon solar cell (bus-bar) engraved structure.
Background technology
Crystal-silicon solar cell is a kind of semiconductor device that can effectively absorb solar radiation and make it to be converted into electric energy, can be applicable to various electricity generation systems.The main drive that the crystal-silicon solar cell generation technology is applied both ways, high conversion efficiency and low cost.Except silicon chip, the optimized application of conductive silver paste is to realize the emphasis of this two aspects target simultaneously.
The main grid effect of crystal silicon solar energy battery is to collect and conduct charges.In order to reduce the power loss that electrode resistance causes, ensure the solderability of electrode main grid, improve the conversion efficiency of crystal silicon solar energy battery, the electrocondution slurry that crystalline silicon solar battery electrode uses noble metal silver to process usually prepares.Conventional crystalline silicon solar battery electrode main grid is generally by the conductive silver paste complete filling; This has not only increased huge silver slurry unit consumption cost; And in welding process, cause the tin overflow easily, and produce the tin silk, " drawing the tin phenomenon " not only causes bad order; Cause rework rate, fragment rate and scrappage to rise, further raise cost.Therefore, designing a kind of main grid electrode structure, improve the welding yields, guarantee that charge-trapping and transmission are not affected, is a kind of effective way of cost efficiency.
Summary of the invention
The purpose of the utility model provides the novel main grid electrode of a kind of crystal-silicon solar cell; Can avoid crystal silicon solar cell sheet when welding, to produce the electrode structure of tin silk; Can practice thrift the consumption of crystalline silicon solar battery electrode printing conductive silver slurry, thereby reach the purpose of cost efficiency.
The technical scheme that the utility model is taked is:
The novel main grid electrode of a kind of crystal-silicon solar cell; Electrode is provided with the hollow out formula conductive paste bed of material; The hollow out formula conductive paste bed of material comprises middle equidistant evenly distributed " worker " font bow strip of frame, main grid electrode that is positioned at main grid electrode both sides, and " worker " font bow strip and frame are connected as a single entity.
There are the electrocondution slurry lines to connect between described adjacent two " worker " font bow strips.
Described electrocondution slurry lines preferably have the 1-3 bar, between frame, form the figure that contains 2-4 rectangle hollow out.
" worker " of the utility model main grid electrode but the font bow strip can provide certain bonding area; Ensure the adhesive strength and the welding reliability of welding; Solid line wherein connects frame can effectively reduce main grid electrode body resistance, can guarantee the continuity of employee's welding operation simultaneously.There is the rectangle pierced pattern between adjacent two " worker " font bow strips, can effectively reduces the consumption of conductive silver paste; The rectangle hollow out can store the scolding tin that overflows when welding, can avoid the appearance of tin silk, improves the yields of welding; Rectangular hollow out can also reduce the contact area of conductive silver paste and silicon chip surface, thereby it is compound to reduce charge carrier, improves open circuit voltage and short circuit current.Adopt the crystal silicon solar energy battery main grid structure of aforesaid way preparation, can not only reduce crystalline silicon too can production cost of cells, but also can improve the yields of battery component, reduces the production cost of assembly.
The battery electrical property correction data such as the following table 1 of the utility model and the complete non-hollow out main grid of grid formula electrode:
Table 1
Description of drawings
Fig. 1 is the structure chart of the utility model embodiment 1;
Fig. 2 is the structure chart of the utility model embodiment 2;
Fig. 3 is the structural representation of the utility model embodiment 3;
Wherein: 1 frame, 2 secondary grid, 3 " worker " font bow strip, 4 rectangle hollow out figures.
Embodiment
The novel main grid electrode of a kind of crystal-silicon solar cell; Electrode is provided with the hollow out formula conductive paste bed of material; The hollow out formula conductive paste bed of material comprises middle equidistant evenly distributed " worker " font bow strip 3 of frame 1, main grid electrode that is positioned at main grid electrode both sides, and " worker " font contact point bar 3 is connected as a single entity with frame 1.
Crystal silicon battery electrode main grid two ends are by the solid border 1 of electrocondution slurry complete filling, and the electrode main grid links to each other with secondary grid 2 through the frame solid line, and electrode main grid mid portion is filled for the electrocondution slurry selectivity.
Embodiment 1
Between adjacent two " worker " font bow strips of crystal-silicon solar cell main grid electrode is hollow out, and no electrocondution slurry lines connect.
Embodiment 2
There are the electrocondution slurry lines to connect between adjacent two " worker " font bow strips of crystal-silicon solar cell main grid electrode.
Described electrocondution slurry lines have 1, between frame, form the figure that contains 2 rectangle hollow outs.
There are the electrocondution slurry lines to connect between adjacent two " worker " font bow strips of crystal-silicon solar cell main grid electrode.
Described electrocondution slurry lines have 3, between frame, form the figure that contains 4 rectangle hollow outs.
Claims (3)
1. novel main grid electrode of crystal-silicon solar cell; It is characterized in that; Electrode is provided with the hollow out formula conductive paste bed of material; The hollow out formula conductive paste bed of material comprises middle equidistant evenly distributed " worker " font bow strip of frame, main grid electrode that is positioned at main grid electrode both sides, and " worker " font bow strip and frame are connected as a single entity.
2. crystal-silicon solar cell main grid electrode according to claim 1 is characterized in that, has the electrocondution slurry lines to connect between described adjacent two " worker " font bow strips.
3. crystal-silicon solar cell main grid electrode according to claim 2 is characterized in that described electrocondution slurry lines preferably have the 1-3 bar, between frame, forms the figure that contains 2-4 rectangle hollow out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203846907U CN202231020U (en) | 2011-10-11 | 2011-10-11 | Novel bus bar of crystalline silica solar cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203846907U CN202231020U (en) | 2011-10-11 | 2011-10-11 | Novel bus bar of crystalline silica solar cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202231020U true CN202231020U (en) | 2012-05-23 |
Family
ID=46081598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203846907U Expired - Lifetime CN202231020U (en) | 2011-10-11 | 2011-10-11 | Novel bus bar of crystalline silica solar cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202231020U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102361038A (en) * | 2011-10-11 | 2012-02-22 | 润峰电力有限公司 | Novel main gate electrode of crystalline silicon solar battery |
-
2011
- 2011-10-11 CN CN2011203846907U patent/CN202231020U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102361038A (en) * | 2011-10-11 | 2012-02-22 | 润峰电力有限公司 | Novel main gate electrode of crystalline silicon solar battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120523 |
|
| CX01 | Expiry of patent term |