CN202749390U - Back contact solar battery string - Google Patents
Back contact solar battery string Download PDFInfo
- Publication number
- CN202749390U CN202749390U CN 201220361048 CN201220361048U CN202749390U CN 202749390 U CN202749390 U CN 202749390U CN 201220361048 CN201220361048 CN 201220361048 CN 201220361048 U CN201220361048 U CN 201220361048U CN 202749390 U CN202749390 U CN 202749390U
- Authority
- CN
- China
- Prior art keywords
- back contact
- contact solar
- solar cell
- solar battery
- conducting resinl
- 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.)
- Expired - Fee Related
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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
Abstract
The utility model discloses a back contact solar battery string. The back contact solar battery string comprises a plurality of back contact solar battery pieces, solidified conductive adhensive and a metal welded belt. The plurality of back contact solar battery pieces are arrayed in a line at intervals. The back surface of each back contact solar battery piece is bonded with the metal welded belt through the solidified conductive adhensive. The back contact solar battery string has the advantages that the bonding solidification between the back contact solar battery piece and the welded belt is avoided, and displacement of the battery pieces and the welded belt before the solidification of the conductive adhensive is prevented, and therefore the assembly performance is not affected.
Description
Technical field
The utility model relates to technical field of solar batteries, particularly the back contact solar cell string.
Background technology
The production process of conventional solar module mainly comprises: single weldering, series welding, lamination, lamination, frame up etc., Novel back contact solar cell establishment of component operation mainly comprises: beat glue, series connection, curing, lamination, lamination, frame up etc., from production process, both differences mainly are the step before the lamination.This is that the latter adopts the method for conductive adhesive because the former adopts welding method, can make the fragment rate reduction with respect to traditional welding because bonding temp is low; On the other hand, from photoelectric conversion efficiency, the assembly of unit are, because the cell piece sensitive surface of back of the body contact assembly is without welding, also dereliction grid line and secondary grid line, thereby the area of sensitive surface crested is few, photoelectric conversion efficiency will be apparently higher than conventional assembly.At present, the back contact solar cell assembly uses conductive backings to encapsulate, and cost is higher.
The utility model content
Utility model purpose: for the problem and shortage of above-mentioned prior art existence, the purpose of this utility model provides a kind of back contact solar cell string, solve the problem of back contact solar cell sheet (being called for short " cell piece ") and the bonding curing of welding, prevent that cell piece and welding from solidifying anterior displacement at conducting resinl, affects assembly property.
Technical scheme: for realizing above-mentioned utility model purpose, the first technical scheme that the utility model adopts is a kind of back contact solar cell string, comprise a plurality of back contact solar cell sheets, the conducting resinl that has solidified and metal welding, described a plurality of back contact solar cell sheet is linear interval to be arranged, and the back side of back contact solar cell sheet is bonding by the conducting resinl and the metal welding that have solidified.
Further, described metal welding is laid on the main grid line at the back contact solar cell sheet back side.
The second technical scheme that the utility model adopts is a kind of manufacture method of back contact solar cell string, comprises the steps:
(1) at the back side of a plurality of back contact solar cell sheets spraying conducting resinl;
(2) the back contact solar cell sheet back side is laid on the series connection template towards Linear;
(3) the metal welding is laid on the back side of back contact solar cell sheet;
(4) will the connect position of template, back contact solar cell sheet and welding is fixed;
(5) series connection template, back contact solar cell sheet and the welding heating to fixing solidified conducting resinl.
Further, described metal welding is laid on the main grid line at the back contact solar cell sheet back side.
Further, described series connection template is metallic plate, and the surface of this metallic plate is provided with a plurality of grooves that linear interval is arranged that are; In the described step (4), metal otter board is placed on the back contact solar cell sheet of laying welding, and with anchor clamps fixing metal web plate and metallic plate.
Further, also comprise step (6): remove described metallic plate and metal otter board.
Further, described conducting resinl is silver particles resin conducting resinl, and in the described step (5), curing temperature is 180 ℃, stablizes 10 minutes.
Further, described conducting resinl is tin bismuth granule subtree fat conducting resinl, and in the described step (5), curing temperature is 300 ℃, stablizes for 10 seconds.
Beneficial effect: the utility model can effectively pass through Curing conductive adhesive, carry out the bonding series connection of back contact solar cell sheet, solve the problem of the conducting resinl integrally curing on the cell piece after connecting, the conducting resinl that need not on the single battery sheet solidifies separately, has improved output capacity; Prevent that cell piece and welding from solidifying anterior displacement at conducting resinl, affects assembly property.
Description of drawings
Fig. 1 is the schematic diagram of self-contained battery sheet and each layer of metal welding belting;
Fig. 2 is the floor map of Fig. 1.
Embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the utility model, should understand these embodiment only is used for explanation the utility model and is not used in restriction scope of the present utility model, after having read the utility model, those skilled in the art all fall within the application's claims limited range to the modification of the various equivalent form of values of the present utility model.
As depicted in figs. 1 and 2, the manufacture method of back contact solar cell string comprises the steps:
(1) utilize automatic gluing machine to spray conducting resinl at the main grid line at back contact solar cell sheet 4 back sides;
(2) prepare series connection template 2: the series connection template is aluminium alloy or corrosion resistant plate, which is provided with a string groove, and the degree of depth of groove is suitable with the thickness of cell piece, and the shape of groove is consistent with cell piece, also is rectangle, and the size of groove is also identical with cell piece; The cell piece that then will spray conducting resinl is laid in the groove of series connection template successively, and the back side of cell piece up;
(3) many strip metals welding 3 is laid on the main grid line at the cell piece back side, paving mode as shown in Figure 2, guarantee to have at least between per two adjacent cell pieces two strip metal weldings to link to each other, and two best being spaced of welding, reached best solidification effect;
(4) determine the position of cell piece and welding corresponding errorless after, metal otter board 1 is put down gently on cell piece, and four jiaos of metal otter board with clip fixing metal web plate and series connection template, prevent that cell piece and metal welding misplace in moving process, affect solidification effect;
(5) metal otter board that fixes, the cell piece that connects (comprising conducting resinl and metal welding on it) and series connection template are put into continuous tunnel furnace together, carry out the different temperatures setting for different conducting resinls: when using silver particles resin conducting resinl, the continuous tunnel furnace furnace temperature is arranged on 180 ℃, stablized 10 minutes, silver particles resin conducting resinl composition is resin, silver particles, scaling powder etc.; When using tin bismuth granule subtree fat conducting resinl, the continuous tunnel furnace furnace temperature is arranged on 300 ℃, stablizes for 10 seconds, and tin bismuth granule subtree fat conducting resinl composition is resin, tin particle, bismuth granule, scaling powder etc.;
(6) conducting resinl curing is finished, the metal otter board that fixes, the cell piece that connects (comprising conducting resinl and metal welding on it) and series connection template are taken out from continuous tunnel furnace, unclamp clip, unload metal otter board and series connection template for fixing next time, this moment, the back contact solar cell sheet of series connection was connected to the back contact solar cell string.
In the present embodiment, metal otter board also can be replaced by the cover plate of other same function, is not limited to the described metal otter board of present embodiment.
The temperature control of continuous tunnel furnace, the conducting resinl that present embodiment uses uses the hot curing mode, and curing temperature is controlled by infrared temperature sounder.Yet present embodiment is not limited to the conducting resinl of hot curing, other for example: the conducting resinl of ultra-violet curing and tin cream also can be used as substituting of present embodiment, and continuous tunnel furnace can provide heating or ultraviolet irradiation.
Present embodiment can utilize the continuous tunnel furnace heating, also can use In Situ Heating device or original position ultraviolet irradiation device, avoids mobile.
Claims (2)
1. back contact solar cell string, comprise a plurality of back contact solar cell sheets, the conducting resinl that has solidified and metal welding, described a plurality of back contact solar cell sheet is linear interval to be arranged, and the back side of back contact solar cell sheet is bonding by the conducting resinl and the metal welding that have solidified.
2. described back contact solar cell string according to claim 1, it is characterized in that: described metal welding is laid on the main grid line at the back contact solar cell sheet back side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220361048 CN202749390U (en) | 2012-07-25 | 2012-07-25 | Back contact solar battery string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220361048 CN202749390U (en) | 2012-07-25 | 2012-07-25 | Back contact solar battery string |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202749390U true CN202749390U (en) | 2013-02-20 |
Family
ID=47708749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220361048 Expired - Fee Related CN202749390U (en) | 2012-07-25 | 2012-07-25 | Back contact solar battery string |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202749390U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751361A (en) * | 2012-07-25 | 2012-10-24 | 合肥海润光伏科技有限公司 | Back-contact solar battery string and production method thereof |
| CN116673645A (en) * | 2023-06-12 | 2023-09-01 | 无锡市斯威克科技有限公司 | Photovoltaic module welding mode |
-
2012
- 2012-07-25 CN CN 201220361048 patent/CN202749390U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751361A (en) * | 2012-07-25 | 2012-10-24 | 合肥海润光伏科技有限公司 | Back-contact solar battery string and production method thereof |
| CN116673645A (en) * | 2023-06-12 | 2023-09-01 | 无锡市斯威克科技有限公司 | Photovoltaic module welding mode |
| CN116673645B (en) * | 2023-06-12 | 2023-12-12 | 无锡市斯威克科技有限公司 | Photovoltaic module welding method |
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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: 20130220 Termination date: 20180725 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |