CN210224045U - Grid line structure of solar cell - Google Patents
Grid line structure of solar cell Download PDFInfo
- Publication number
- CN210224045U CN210224045U CN201920931206.4U CN201920931206U CN210224045U CN 210224045 U CN210224045 U CN 210224045U CN 201920931206 U CN201920931206 U CN 201920931206U CN 210224045 U CN210224045 U CN 210224045U
- Authority
- CN
- China
- Prior art keywords
- grid line
- grid
- main
- lines
- solar cell
- 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.)
- Active
Links
Images
Abstract
The utility model provides a grid line structure of a solar cell, which comprises five main grid lines and a plurality of auxiliary grid lines, wherein the five main grid lines are parallel to each other and are uniformly distributed, and each main grid line is perpendicular to and intersects with the plurality of auxiliary grid lines; the main grid line comprises a main grid head part and a grid line main body, the main grid head part comprises a top end fine grid line and a welding part, two ends of the welding part are respectively connected with the top end fine grid line and the grid line main body, and the widths of the main grid head part, the welding part and the grid line main body are decreased progressively; the grid line main part is fretwork grid line. The utility model aims at providing a grid line structure of solar wafer increases main grid line aspect ratio, reduces the hidden split of empty rosin joint of head and tail portion.
Description
Technical Field
The utility model relates to a technical field is made to solar wafer, concretely relates to grid line structure of solar wafer.
Background
And the solar cell is welded at the temperature of 200-350 ℃, so that the heated welding strip is connected with the solidified silver paste main grid after melting and solidification. There are two abnormal situations in this process: on one hand, the solder strip or silver paste is not melted sufficiently, so that the connection effect is poor after cooling, and cold joint is caused; on the other hand, in the cooling process after welding, because the thermal expansion coefficient difference of the welding strip, the silver paste and the crystalline silicon wafer is large, the welding strip and the crystalline silicon wafer can generate thermal stress, the thermal stress can cause the fracture probability of the crystalline silicon wafer to increase, and the thermal stress can cause the welding strip to generate a false welding phenomenon, so that the series resistance of the component is increased, and the power loss is caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a grid line structure of solar wafer increases main grid line aspect ratio, reduces the hidden split of empty rosin joint of head and tail portion.
The utility model provides a following technical scheme:
a grid line structure of a solar cell comprises five main grid lines and a plurality of auxiliary grid lines, wherein the five main grid lines are parallel to each other and are uniformly distributed, and each main grid line is perpendicular to and intersects with the plurality of auxiliary grid lines;
the main grid line comprises a main grid head part and a grid line main body, the main grid head part comprises a top end fine grid line and a welding part, two ends of the welding part are respectively connected with the top end fine grid line and the grid line main body, and the widths of the main grid head part, the welding part and the grid line main body are decreased progressively; the grid line main part is fretwork grid line.
Preferably, the grid line main body comprises eight sections of branch lines, four sections of the branch lines are arranged in a hollow manner, slurry is filled in the other four sections of the branch lines, and the branch lines arranged in the hollow manner are connected with the branch lines provided with the slurry in a staggered manner.
Preferably, the width of the head part of the main grid is 1.5 cm.
Preferably, the width of the welded portion is 1.2 cm.
Preferably, the width of the grid line main body is 0.7 cm.
Preferably, the distance between two adjacent secondary grid lines is 0.6 cm.
The utility model has the advantages that: the main grid line of the utility model adopts eight-section hollow arrangement, and saves hollow part slurry to be accumulated at other non-hollow positions of the main grid line on the premise that the unit consumption cost of the slurry for printing the battery is equivalent to that of the conventional graph, so that the height-width ratio of the main grid line is larger; the utility model discloses the width of the thin grid line in top of main grid line, weld part and grid line main part steadilys decrease in proper order, when welding the head and the tail of taking welding main grid, can reduce and conduct the welding stress because of the weld part brings, reduces the hidden split of empty rosin joint of head and tail.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic diagram of a grid line structure of a battery cell of the present invention;
fig. 2 is a schematic view of the main grid structure of the present invention;
fig. 3 is a cross-sectional view of the main grid line of the conventional and inventive solar cell;
labeled as: 1. a main gate line; 2. a secondary gate line; 3. a main gate head; 4. a gate line body; 5. a top fine grid line; 6. a conventional bus bar surface; 7. the main grid line surface of the embodiment; 8. and (7) welding the parts.
Detailed Description
As shown in fig. 1-3, a grid line structure of a solar cell comprises five main grid lines 1 and a plurality of auxiliary grid lines 2, wherein the five main grid lines 1 are parallel to each other and are uniformly distributed, each main grid line 1 is perpendicular to and intersects with the plurality of auxiliary grid lines 2, and the distance between two adjacent auxiliary grid lines 2 is 0.6 cm;
the main grid line 1 includes main grid head 3 and grid line main part 4, main grid head 3 includes the thin grid line 5 in top and welding part 8, the both ends of welding part 8 are connected with the thin grid line 5 in top and grid line main part 4 respectively, main grid head 3, the width of welding part 8 and grid line main part 4 subtracts progressively, it is specific, the width of main grid head 3 is 1.5cm, the width of welding part 8 is 1.2cm, the width of grid line main part 4 is 0.7cm, when welding the area welding main grid head afterbody, can reduce and conduct the welding stress because of welding part 8 brings, it is hidden to split to reduce the empty rosin joint of head and tail portion.
The grid line main body 4 is a hollowed grid line, specifically, the grid line main body 4 comprises eight sections of branch lines, four sections of branch lines are hollowed, slurry is filled in the other four sections of branch lines, the branch lines which are hollowed are connected with the branch lines with the slurry in a staggered mode, on the premise that the unit consumption cost of the slurry for battery printing is equivalent to that of the slurry for conventional patterns, the slurry for hollowed parts is saved and is accumulated in other non-hollowed positions of the main grid line 1, and the height-width ratio of the main grid line 1 is larger;
meanwhile, in the embodiment, the non-pressing mode of the battery piece printing screen is changed into the pressing mode, and according to the cross-sectional view of fig. 3, compared with the conventional main grid line surface 6, the main grid line surface 7 in the embodiment is smoother, the main grid edge is neat, when the machine image identifies the battery piece, the positioning is more accurate, and the welding offset is reduced.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The grid line structure of the solar cell is characterized by comprising five main grid lines and a plurality of auxiliary grid lines, wherein the five main grid lines are parallel to each other and are uniformly distributed, and each main grid line is perpendicular to and intersected with the plurality of auxiliary grid lines;
the main grid line comprises a main grid head part and a grid line main body, the main grid head part comprises a top end fine grid line and a welding part, two ends of the welding part are respectively connected with the top end fine grid line and the grid line main body, and the widths of the main grid head part, the welding part and the grid line main body are decreased progressively; the grid line main part is fretwork grid line.
2. The grid line structure of a solar cell according to claim 1, wherein the grid line body comprises eight segments of branch lines, four segments of the branch lines are arranged in a hollow manner, the other four segments of the branch lines are filled with slurry, and the branch lines arranged in the hollow manner are connected with the branch lines provided with the slurry in a staggered manner.
3. The grid line structure of a solar cell of claim 1, wherein the width of the head of the main grid is 1.5 cm.
4. The grid line structure of a solar cell according to claim 3, wherein the width of the welding part is 1.2 cm.
5. The grid line structure of a solar cell of claim 4, wherein the width of the grid line main body is 0.7 cm.
6. The grid line structure of a solar cell of claim 1, wherein the distance between two adjacent secondary grid lines is 0.6 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920931206.4U CN210224045U (en) | 2019-06-18 | 2019-06-18 | Grid line structure of solar cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920931206.4U CN210224045U (en) | 2019-06-18 | 2019-06-18 | Grid line structure of solar cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210224045U true CN210224045U (en) | 2020-03-31 |
Family
ID=69932987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920931206.4U Active CN210224045U (en) | 2019-06-18 | 2019-06-18 | Grid line structure of solar cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210224045U (en) |
-
2019
- 2019-06-18 CN CN201920931206.4U patent/CN210224045U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110098275B (en) | Solar cell interconnect | |
| CN108687418B (en) | Solder strip connection method of solar cell | |
| JP2006310798A (en) | Solar cell module and method of manufacturing the same | |
| CN210052815U (en) | Secondary lithium battery with multiple winding cores | |
| WO2021036801A1 (en) | New metal-semiconductor-contact-type multi-busbar single crystalline efficient cell | |
| JP3978203B2 (en) | Connection method of solar cell elements | |
| CN105215497A (en) | Photovoltaic module crystalline silicon battery plate welding procedure | |
| CN210224045U (en) | Grid line structure of solar cell | |
| CN203325945U (en) | Solder strip for solar cell and solar module | |
| JP2006080217A (en) | Solar battery and solar battery module | |
| CN102729666A (en) | Improved secondary printing method for crystalline silicon solar cell | |
| CN209666550U (en) | A kind of anti-crack halftone of solar battery | |
| CN207386806U (en) | A kind of Laser Welding connection structure of battery pole ear | |
| CN203950824U (en) | Solar module | |
| CN201350539Y (en) | Braze welding bracket for brazed heat exchanger | |
| CN210123736U (en) | Multi-main-grid solar cell and solar module | |
| CN102738249B (en) | Photovoltaic panel and method for forming conductive channel of photovoltaic panel | |
| CN207868206U (en) | A kind of more main grid cell pieces | |
| CN115224161A (en) | Manufacturing method of novel main-grid-free solar photovoltaic module | |
| CN208424822U (en) | A kind of U-shaped heater of communications optical cable | |
| CN208753335U (en) | A kind of compatible front metal electrode of the full half of interdigitated | |
| CN111438418A (en) | Tin sticky welding head | |
| CN212230439U (en) | Multi-main-grid crystalline silicon solar cell | |
| CN107369727B (en) | A kind of crystal silicon solar batteries piece | |
| CN210524082U (en) | Welding pin pressure plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |