CN208189601U - A kind of the front main grid structure and solar battery of more main grid batteries - Google Patents
A kind of the front main grid structure and solar battery of more main grid batteries Download PDFInfo
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- CN208189601U CN208189601U CN201820897897.6U CN201820897897U CN208189601U CN 208189601 U CN208189601 U CN 208189601U CN 201820897897 U CN201820897897 U CN 201820897897U CN 208189601 U CN208189601 U CN 208189601U
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Abstract
The utility model provides the front main grid structure and solar battery of a kind of more main grid batteries, each main gate line includes two parallel linear electrodes, several pads are distributed between two linear electrodes, pad is connected by connecting line and the linear electrode on both sides, secondary grid are located at parallel lines electrode two sides, and secondary grid are vertical with linear electrode.The structure ensures contact and forms welding there are in the case where contraposition deviation, welding there will not be with secondary grid during actual welding, solves welding and contacts caused welding EL disconnection problem with pair grid.
Description
Technical field
The utility model belongs to area of solar cell, in particular to a kind of front main grid structure of more main grid batteries.
Background technique
A kind of energy utilization patterns of the solar energy power generating as clean and effective, have obtained global common concern,
It is the strategic emerging technology industry of state key development.
Metal electrode is the important major part of solar cell, the effect of electric current collection and transmission is primarily served, to battery
Performance has great influence.
More main grid solar cells (main grid quantity >=10 piece) on the one hand can greatly improve battery efficiency, on the other hand can be with
Silver paste consumption and manufacturing cost is effectively reduced, has become industry focus of attention at present.
The electrode structure at right side of more main grid batteries generally comprises longitudinal 10~30 front electrode main gate lines and a plurality of pair
Grid line, every main gate line and secondary grid line are mutually perpendicular to and intersect, and main gate line is single continuous solid line, are provided on main grid multiple
Pad point, for realizing welding welding and battery series connection.
Welding generally uses diameter for the tin plating round welding of 0.2~0.5mm.
During battery series welding, while welding and main grid and pad form welding, because main grid line width is obviously relatively welded
Band wants narrow, and main grid and welding inevitably have certain contraposition deviation, so the secondary grid that welding and main grid intersect vertically
Welding may also be will form.
Secondary grid and welding are formed in welding process, and secondary grid are thinner, and silver is relatively fewer, and welding tin is relatively excessive.Welding process
The middle fluctuation because of technique, it may occur that secondary grid silver paste near welding is all or part of to form silver-tin alloy with molten tin, makes
At secondary grid with the fracture of welding junction or portion fractures, be shown as breaking or component is followed cold and hot under EL test after welding
After ring TC test, more crisp silver-tin alloy is broken, and is shown as breaking under EL.It eventually leads to component series resistance to rise, under power
Drop, has seriously affected product quality and reliability.
Therefore, how to solve the problems, such as more main grid welding batteries secondary grid welding breaking in the process, be that this field is badly in need of solving
One of the technical issues of.
Utility model content
To solve the problems, such as secondary grid line welding breaking during more main grid welding batteries, it is more that the utility model provides one kind
The front main grid electrode structure of main grid battery.Ensure during actual welding there are in the case where contraposition deviation, welding and secondary grid
It there will not be contact and form welding.
To achieve the above object, the technical solution of the utility model is,
A kind of front main grid structure of more main grid batteries, each main gate line include two parallel linear electrodes, and two
Several pads for connecting with welding are distributed between linear electrode, pad is connected by connecting line and the linear electrode on both sides
It connects, secondary grid are located at main gate line two sides, and secondary grid are vertical with linear electrode.
The distance s of two linear electrodes are greater than the transverse width of pad, less than or equal to the spacing d of two neighboring secondary grid.
Linear electrode is continuous solid line, and width is 30~200um.
Number of pads between two linear electrodes is 6~20.
Bond pad shapes are rectangle, circle or diamond shape, and the shape of all pads is identical or different.
The spacing of all adjacent pads is identical or different.
The width W of connecting line2Greater than secondary grid W1Width.
The line of the connecting line of pad two sides passes through the center of pad.
Connecting line and secondary grid are in same straight line or not on the same line.
A kind of solar battery, using the front main grid structure.
Compared with prior art, the utility model has the beneficial effects that
The front main grid structure of more main grid batteries of the utility model, by the way that main gate line is designed to two parallel straight lines
Electrode, between parallel lines, secondary grid line is located at except parallel lines pad, thoroughly avoids circle welding and secondary grid in welding process
The contact of line solves caused by welding is contacted with secondary grid and welds EL disconnection problem.Pass through the width of two parallel lines of main gate line
Greater than the design of pad width, it is ensured that there are in the case where contraposition deviation during actual welding, welding there will not be with secondary grid
It contacts and forms welding.
Detailed description of the invention
Fig. 1 is the utility model battery front side structure chart；
Fig. 2 is the utility model front main grid structure partial enlarged drawing one；
Wherein: 1- linear electrode, 2- pad, 3- connecting line, 4- pair grid.
Specific embodiment
The technology of the utility model is described in detail with reference to the accompanying drawing:
Embodiment 1
As shown in Figure 1, a kind of front main grid structure of more main grid batteries, each main gate line include two parallel straight lines
Electrode 1, is distributed with several pads 2 between two parallel linear electrodes 1, and the parallel lines electrode on pad 2 and both sides passes through company
Wiring 3 connects, and secondary grid 4 are located at 1 two sides of parallel lines electrode, and secondary grid 4 are vertical with linear electrode 1.
As shown in Fig. 2, the distance s of two parallel lines electrodes 1 are greater than the width of pad 2, it is less than or equal to 4 spacing d of secondary grid；
Linear electrode 1 is continuous solid line, and width is 30~200um.
2 quantity of pad between two parallel lines electrodes 1 is 6~20,2 shape of pad be rectangle, circle, diamond shape or
Other polygons, 2 width of pad are 0.5~1.5mm, and pad 2 is for realizing the welding with welding.
2 size of pad is identical can also be different, and 2 spacing of pad is identical can also be different.
The connecting line 3 of pad 2 and parallel lines electrode 1 is located at the center of pad, width W2For 50~200um, and it is greater than
Secondary grid W1Width.Connecting line 3 can be with secondary grid 4 in same straight line, can not also be on the same line.
The principles of the present invention are as follows: by the way that main gate line is designed to that two parallel linear electrodes, pad are located at parallel
Between line, secondary grid line is located at except parallel lines, thoroughly avoids the contact of circle welding and secondary grid line in welding process, solves weldering
Band welds EL disconnection problem caused by contacting with secondary grid.It is greater than setting for pad width by the width of two parallel lines of main gate line
Meter, it is ensured that contact and form welding there are in the case where contraposition deviation, welding there will not be with pair grid during actual welding.
Embodiment 2
A kind of solar battery, using front main grid structure described in embodiment 1.
In addition, the above embodiment of the utility model is embodiment, have and claims of the utility model
Technical idea is allowed to identical method and plays the technical solution of identical function and effect, is all contained in the utility model.
Claims (10)
1. a kind of front main grid structure of more main grid batteries, it is characterised in that: each main gate line includes two parallel straight lines
Several pads (2) for connecting with welding are distributed between two linear electrodes (1) in electrode (1), and pad (2) passes through connection
Line (3) is connect with the linear electrode (1) on both sides, and secondary grid (4) are located at main gate line two sides, and secondary grid (4) are vertical with linear electrode (1).
2. a kind of front main grid structure of more main grid batteries according to claim 1, it is characterised in that: two linear electrodes
(1) the spacing d that distance s are greater than the transverse width of pad (2), are less than or equal to two neighboring secondary grid (4).
3. a kind of front main grid structure of more main grid batteries according to claim 1 or 2, it is characterised in that: linear electrode
It (1) is continuous solid line, width is 30~200um.
4. a kind of front main grid structure of more main grid batteries according to claim 1, it is characterised in that: two linear electrodes
(1) pad (2) quantity between is 6~20.
5. a kind of front main grid structure of more main grid batteries according to claim 1 or 4, it is characterised in that: pad (2) shape
Shape is rectangle, circle or diamond shape, and the shape of all pads (2) is identical or different.
6. a kind of front main grid structure of more main grid batteries according to claim 1 or 4, it is characterised in that: all adjacent
The spacing of pad (2) is identical or different.
7. a kind of front main grid structure of more main grid batteries according to claim 1, it is characterised in that: connecting line (3)
Width W2Greater than secondary grid W1Width.
8. a kind of front main grid structure of more main grid batteries according to claim 1, it is characterised in that: pad (2) two sides
Connecting line (3) line pass through pad (2) center.
9. a kind of front main grid structure of more main grid batteries according to claim 1, it is characterised in that: connecting line (3) with
Secondary grid (4) are in same straight line or not on the same line.
10. a kind of solar battery, it is characterised in that: using front main grid structure described in claim 1 to 9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820897897.6U CN208189601U (en) | 2018-06-11 | 2018-06-11 | A kind of the front main grid structure and solar battery of more main grid batteries |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820897897.6U CN208189601U (en) | 2018-06-11 | 2018-06-11 | A kind of the front main grid structure and solar battery of more main grid batteries |
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| Publication Number | Publication Date |
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| CN208189601U true CN208189601U (en) | 2018-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820897897.6U Active CN208189601U (en) | 2018-06-11 | 2018-06-11 | A kind of the front main grid structure and solar battery of more main grid batteries |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023103971A1 (en) * | 2021-12-06 | 2023-06-15 | 天合光能股份有限公司 | Cell |
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2018
- 2018-06-11 CN CN201820897897.6U patent/CN208189601U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023103971A1 (en) * | 2021-12-06 | 2023-06-15 | 天合光能股份有限公司 | Cell |
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