CN214043680U - Front grid line structure - Google Patents
Front grid line structure Download PDFInfo
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- CN214043680U CN214043680U CN202022205156.7U CN202022205156U CN214043680U CN 214043680 U CN214043680 U CN 214043680U CN 202022205156 U CN202022205156 U CN 202022205156U CN 214043680 U CN214043680 U CN 214043680U
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Abstract
The utility model belongs to the technical field of solar wafer front electrode graphic design, concretely relates to front grid line structure. The utility model discloses a positive grid line structure, including many vertical positive electrode main grid lines that set up and the horizontal positive electrode secondary grid line that sets up, main grid line and secondary grid line mutually perpendicular just intersect, and each main grid line comprises a plurality of pads and pad connecting wire, the both ends of main grid line are provided with harpoon column structure, the pad is square or circular structure, the left and right sides symmetry of pad is provided with hollow out construction. The utility model discloses carried out further optimization to the pad structure on current MBB technique main grid line design basis, the pad structure has hollow out construction's novel structure by traditional square or circular structural optimization for both sides, on not changing battery piece and subassembly electrical property basis, has saved the effect of printing positive silver unit consumption and improve current, can improve subassembly end welding skew problem moreover.
Description
Technical Field
The utility model belongs to the technical field of solar wafer front electrode graphic design, concretely relates to front grid line structure.
Background
At present, the main grid of a solar cell adopts mbb (multi busbar) technology, that is: the main grid lines are generally designed into 9-12 rows, the whole structure of the main grids is in a gourd string shape, so that the more the number of the main grids is, the shorter the distance between the main grids is, the smaller the series resistance is, and the higher the filling factor of the battery piece is.
However, the current pads on the gourd string-shaped main grid are basically designed to be rectangular solid, unnecessary cost waste exists in the process of printing solid conductive silver paste on the screen, the larger the printing area of the silver paste is, the larger the illumination area of the solar cell can be shielded, and the current of the solar cell can be reduced, so that the design of the main grid pads is very necessary to be further optimized.
Disclosure of Invention
An object of the utility model is to prior art not enough, provide a positive grid line structure. The utility model discloses carried out further optimization to the pad structure on current MBB technique main grid line design basis, the pad structure has hollow out construction's novel structure by traditional square or circular structural optimization for both sides, on not changing battery piece and subassembly electrical property basis, has not only saved the effect of printing positive silver unit consumption and improve current, can improve subassembly end welding skew problem moreover.
For solving the deficiency of the prior art, the utility model adopts the following technical scheme: the utility model provides a front grid line structure, includes many vertical front electrode main grid lines that set up and the horizontal front electrode secondary grid line that sets up, main grid line and secondary grid line mutually perpendicular and crossing, each main grid line by a plurality of pad and pad connecting wire are constituteed, the both ends of main grid line are provided with the harpoon column structure, the pad is square or circular structure, the left and right sides symmetry of pad is provided with hollow out construction.
When the bonding pad is of a square structure, the four corners are transited through arcs.
The hollow structure is a saw-toothed structure and comprises concave parts and convex parts which are arranged at intervals
Compared with the prior art, the utility model has the advantages of it is following:
1. the utility model discloses set up hollow out construction in the both sides of pad on the basis of traditional square or circular structure pad structure, on not changing battery piece and subassembly electrical property basis, can further save the positive silver unit cost of printing.
2. The utility model discloses a pad structure compares traditional pad structure printing area and reduces, on not changing battery piece and subassembly electrical property basis, the area of solar illumination on the battery piece increases, can further promote the electric current and the conversion efficiency of battery piece.
3. The utility model discloses the hollow out construction of pad structure both sides can improve the subassembly end and weld and take the welding skew, avoids producing pulling force low on the one side and subassembly power loss problem.
Drawings
Fig. 1 is a schematic structural diagram of a pad in embodiment 1 of the present invention.
Fig. 2 is a schematic diagram of a pad structure in the prior art.
Fig. 3 is a schematic diagram of a front gate line structure of a multi-main gate battery in embodiment 1 of the present invention.
Fig. 4 is a schematic diagram of the structure of a main gate line in the multiple main gate battery of fig. 3.
Description of reference numerals: 1-a pad; 2-hollow structure; 3-main grid line; 4-secondary grid line; 5-pad connection lines; 6-a harpoon-like structure.
The following describes the embodiments of the present invention in detail with reference to the drawings and the technical solutions.
Detailed Description
Example 1
As shown in fig. 1, in the patterned bonding pad structure of the multi-master-gate battery, a bonding pad 1 is of a square structure, four corners of the square structure are in arc transition, and hollow-out structures 2 are symmetrically arranged on the left side and the right side of the bonding pad 1.
The hollow structure 2 is a saw-toothed structure and comprises a concave part 21 and a convex part 22 which are arranged at intervals.
As shown in fig. 3, the front grid line structure is arranged on a battery substrate and comprises a plurality of front electrode main grid lines 3 arranged longitudinally and front electrode auxiliary grid lines 4 arranged transversely, the main grid lines 3 and the auxiliary grid lines 4 are perpendicular to each other and intersect with each other, as shown in fig. 4, each main grid line 3 is composed of a plurality of bonding pads 1 and bonding pad connecting lines 5 shown in fig. 1, and fish-fork-shaped structures 6 are arranged at two ends of each main grid line 3.
In summary, the above embodiments are only used for illustrating the technical solutions of the present invention, not for limiting the same, the protection scope of the present invention is not limited thereto, and any person skilled in the art can obviously obtain simple changes or equivalent replacements of the technical solutions within the technical scope of the present invention.
Claims (3)
1. The utility model provides a front grid line structure, includes many vertical front electrode main grid line (3) that set up and the vice grid line (4) of front electrode that transversely sets up, main grid line (3) and vice grid line (4) mutually perpendicular and crossing, its characterized in that, each main grid line (3) comprise a plurality of pads (1) and pad connecting wire (5), the both ends of main grid line (3) are provided with the fork structure, pad (1) are square or circular structure, the left and right sides symmetry of pad (1) is provided with hollow out construction (2).
2. The front gate line structure of claim 1, wherein the bonding pad (1) has a square structure, and the four corners of the bonding pad are transited by arcs.
3. The front grid line structure according to claim 1 or 2, wherein the hollow structure (2) is a saw-tooth structure, and comprises a recessed portion (21) and a protruding portion (22) which are arranged at intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022205156.7U CN214043680U (en) | 2020-09-30 | 2020-09-30 | Front grid line structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022205156.7U CN214043680U (en) | 2020-09-30 | 2020-09-30 | Front grid line structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214043680U true CN214043680U (en) | 2021-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022205156.7U Active CN214043680U (en) | 2020-09-30 | 2020-09-30 | Front grid line structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN214043680U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023116683A1 (en) * | 2021-12-20 | 2023-06-29 | 天合光能股份有限公司 | Photovoltaic module main grid structure, preparation method therefor and use thereof |
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2020
- 2020-09-30 CN CN202022205156.7U patent/CN214043680U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023116683A1 (en) * | 2021-12-20 | 2023-06-29 | 天合光能股份有限公司 | Photovoltaic module main grid structure, preparation method therefor and use thereof |
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