CN203660984U - Welding connection structure for reducing edge subfissure of photovoltaic module - Google Patents
Welding connection structure for reducing edge subfissure of photovoltaic module Download PDFInfo
- Publication number
- CN203660984U CN203660984U CN201320818412.7U CN201320818412U CN203660984U CN 203660984 U CN203660984 U CN 203660984U CN 201320818412 U CN201320818412 U CN 201320818412U CN 203660984 U CN203660984 U CN 203660984U
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- China
- Prior art keywords
- welding
- battery strings
- convergent belt
- photovoltaic module
- connection structure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Photovoltaic Devices (AREA)
Abstract
The utility model discloses a welding connection structure for reducing the edge subfissure of a photovoltaic module, and relates to the field of solar photovoltaic module manufacturing technology, which comprises a row of battery strings connected in series through solder strips. The solder strips, led out of each row of the battery strings, are connected in series through different busbars. The solder strips, led out from the front surfaces of the battery strings, are connected with the upper parts of the busbars. The solder strips, led out from the back surfaces of the battery strings, are connected with the lower parts of the busbars. According to the technical scheme of the utility model, through changing the connection positions of the solder strips with the busbars, the stress applied to the connection parts of the battery strings with the solder strips is reduced, so that the subfissure phenomenon during the subsequent laminating process is relieved. Meanwhile, the fragmentation rate is reduced and the yield of photovoltaic modules is improved. Meanwhile, the product quality is improved and the production cost is lowered.
Description
Technical field
The utility model relates to solar photovoltaic assembly manufacture technology field.
Background technology
The need of production of solar photovoltaic assembly is through a series of operations such as welding, lamination, encapsulation, at welding sequence, first need, single welding of battery film composition battery strings, then the welding of drawing from battery strings front and back and convergent belt to be welded together.At present, the connected mode of welding and convergent belt be the welding of drawing from battery strings front be connected in convergent belt below, cause like this welding being connected with convergent belt to be case of bending.The position of the edge being connected with cell piece due to welding in distortional stress maximum, the welding being connected with convergent belt herein is also case of bending simultaneously, will strengthen stress concentration phenomenon, in the lamination operation of postorder, the edge of photovoltaic module is easy to produce hidden splitting, and the welding that is case of bending can crush cell piece, causes cell piece fragment rate high, percent defective is high, has also strengthened production cost.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of hidden welding connection structure splitting of photovoltaic module edge that reduces, by changing the link position of welding and convergent belt, reduce the stress of battery strings and welding junction, thereby the hidden phenomenon of splitting while reducing postorder lamination, reduce fragment rate, improve photovoltaic module rate of finished products, improve the quality of products, reduce production costs.
For solving the problems of the technologies described above, technical solution adopted in the utility model is: a kind of hidden welding connection structure splitting of photovoltaic module edge that reduces, comprise the battery strings that a row is cascaded by welding, the described welding of drawing from each row's battery strings is in series by different convergent belts, the described welding of drawing from battery strings front be connected in convergent belt above, the described welding of drawing from the battery strings back side be connected in convergent belt below.
Described welding is connected with corresponding convergent belt is vertical, and described welding extends to the outside of corresponding convergent belt.
The length that described welding extends to corresponding convergent belt outside is less than 1mm.
Described different convergent belt all extends to the outside of corresponding outermost welding.
The length that described different convergent belt extends to corresponding outermost welding outside is less than 2mm.
The beneficial effect that adopts technique scheme to produce is: by changing the connected mode of welding and convergent belt, the welding of drawing from battery strings front be connected in convergent belt above, the welding of drawing from the battery strings back side be connected in convergent belt below, make that welding is straight draws, avoid welding bending, reduce the stress of battery strings edge and welding junction, thereby the hidden phenomenon of splitting while reducing postorder lamination, reduce fragment rate, improve photovoltaic module rate of finished products, reduce production costs.
Accompanying drawing explanation
Fig. 1 is the utility model structure schematic diagram;
Mark in figure: 1-battery strings; 2-welding; 3-convergent belt.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Referring to Fig. 1, the utility model comprises the battery strings 1 that a row is cascaded by welding 2, the described welding 2 of drawing from each row's battery strings 1 is in series by different convergent belt 3, the described welding 2 of drawing from battery strings 1 front be connected in convergent belt 3 above, the described welding 2 of drawing from battery strings 1 back side be connected in convergent belt 3 below; Described welding 2 is connected with corresponding convergent belt 3 is vertical, and described welding 2 extends to the outside of corresponding convergent belt 3, and the length that described welding 2 extends to corresponding convergent belt 3 outsides is less than 1mm; Described different convergent belt 3 all extends to the outside of corresponding outermost welding 2, and the length that described different convergent belt 3 extends to corresponding outermost welding 2 outsides is less than 2mm.
Because the dilation coefficient of welding is much larger than the dilation coefficient of cell piece, therefore welds rear cell piece and be microbend state, the position of the edge that welding is connected with cell piece in stress maximum.In the prior art, due to the welding 2 of drawing from battery strings 1 front be connected in convergent belt 3 below, now, be case of bending with the welding 2 of convergent belt 3 junctions, can strengthen stress concentration phenomenon, in the lamination process of postorder, the edge of battery strings 1 easily produces the hidden defect of splitting, and bending welding 2 is easy to cell piece to crush in the time of lamination.The utility model is by changing the connected mode of welding 2 and convergent belt 3, the welding 2 that is about to draw from battery strings 1 front connects with above convergent belt 3, the welding 2 of drawing from battery strings 1 back side be connected in convergent belt 3 below, thereby making to be straightened condition with the welding 1 of convergent belt 3 junctions draws, reduce the stress of convergent belt 3 and welding 2 junctions, thereby be reduced in the hidden defect of splitting of cell piece in lamination process, reduce the fragment rate of cell piece, improve the rate of finished products of photovoltaic module, improve the quality of products.
Claims (5)
1. one kind is reduced the hidden welding connection structure splitting of photovoltaic module edge, comprise the battery strings (1) that a row is cascaded by welding (2), the described welding (2) of drawing from each row's battery strings (1) is in series by different convergent belt (3), it is characterized in that: the described welding (2) of drawing from battery strings (1) front be connected in convergent belt (3) above, the described welding (2) of drawing from battery strings (1) back side be connected in convergent belt (3) below.
2. a kind of hidden welding connection structure splitting of photovoltaic module edge that reduces according to claim 1, it is characterized in that: described welding (2) is connected with corresponding convergent belt (3) is vertical, and described welding (2) extends to the outside of corresponding convergent belt (3).
3. a kind of hidden welding connection structure splitting of photovoltaic module edge that reduces according to claim 2, is characterized in that: the length that described welding (2) extends to corresponding convergent belt (3) outside is less than 1mm.
4. a kind of hidden welding connection structure splitting of photovoltaic module edge that reduces according to claim 3, is characterized in that: described different convergent belt (3) all extends to the outside of corresponding outermost welding (2).
5. a kind of hidden welding connection structure splitting of photovoltaic module edge that reduces according to claim 4, is characterized in that: the length that described different convergent belt (3) extends to corresponding outermost welding (2) outside is less than 2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320818412.7U CN203660984U (en) | 2013-12-13 | 2013-12-13 | Welding connection structure for reducing edge subfissure of photovoltaic module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320818412.7U CN203660984U (en) | 2013-12-13 | 2013-12-13 | Welding connection structure for reducing edge subfissure of photovoltaic module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203660984U true CN203660984U (en) | 2014-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320818412.7U Expired - Fee Related CN203660984U (en) | 2013-12-13 | 2013-12-13 | Welding connection structure for reducing edge subfissure of photovoltaic module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203660984U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105047747A (en) * | 2015-09-09 | 2015-11-11 | 英利集团有限公司 | Photovoltaic module |
-
2013
- 2013-12-13 CN CN201320818412.7U patent/CN203660984U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105047747A (en) * | 2015-09-09 | 2015-11-11 | 英利集团有限公司 | Photovoltaic module |
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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: 20140618 Termination date: 20161213 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |