CN220172146U - Barrier type photovoltaic solder strip - Google Patents
Barrier type photovoltaic solder strip Download PDFInfo
- Publication number
- CN220172146U CN220172146U CN202321399090.7U CN202321399090U CN220172146U CN 220172146 U CN220172146 U CN 220172146U CN 202321399090 U CN202321399090 U CN 202321399090U CN 220172146 U CN220172146 U CN 220172146U
- Authority
- CN
- China
- Prior art keywords
- copper sheet
- tin
- welding
- solder strip
- photovoltaic solder
- 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
- 229910000679 solder Inorganic materials 0.000 title claims abstract description 21
- 230000004888 barrier function Effects 0.000 title claims abstract description 12
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 47
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 41
- 229910052802 copper Inorganic materials 0.000 claims abstract description 41
- 239000010949 copper Substances 0.000 claims abstract description 41
- 238000007747 plating Methods 0.000 claims abstract description 15
- 238000003466 welding Methods 0.000 abstract description 39
- 239000000853 adhesive Substances 0.000 abstract description 5
- 230000001070 adhesive effect Effects 0.000 abstract description 5
- 230000002708 enhancing effect Effects 0.000 abstract description 2
- 238000005476 soldering Methods 0.000 description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Photovoltaic Devices (AREA)
Abstract
The utility model relates to a barrier type photovoltaic solder strip, which aims to solve the technical problem that the adhesive force is small after molten tin is cooled and formed when the current busbar solder strip is welded with a plurality of interconnection solder strips, so that cold joint is easy to occur, and comprises a copper sheet and a tin plating layer; copper sheets; the tinning layer is plated on the outer wall of the copper sheet; an insulating layer is arranged on the outer side of the copper sheet, and the insulating layer is positioned between the copper sheet and the tin plating layer; the utility model has the advantages of forming a clamping structure near the welding side of the copper sheet, enhancing the firmness of the welded copper sheet after welding and avoiding the occurrence of cold joint.
Description
Technical Field
The utility model relates to the technical field of photovoltaic solder strips, in particular to a barrier type photovoltaic solder strip.
Background
Solar photovoltaic cells are used to directly convert the light energy of the sun into electrical energy. The ground photovoltaic system is largely a silicon solar cell using silicon as a substrate, and can be classified into a single crystal silicon solar cell, a polycrystalline silicon solar cell, and an amorphous silicon solar cell.
The solar photovoltaic cell comprises a cell, the cell and the cell are connected through an interconnection conductive tin-coated welding strip, a confluence welding strip is welded at the end part of the cell panel, the confluence welding strip is welded with a plurality of interconnection welding strips, and the confluence welding strip is perpendicular to the plurality of interconnection welding strips. The existing bus welding strip is sheet-shaped, and the welding surface of the bus welding strip is basically a plane when the bus welding strip is welded with a plurality of interconnection welding strips, so that the molten tin is small in adhesive force after cooling and forming, and the situation of cold welding is easy to occur.
In view of this, we propose a barrier type photovoltaic solder strip.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art, adapt to the actual needs, and provide a barrier type photovoltaic solder strip so as to solve the technical problem that the cold forming of molten tin is small in adhesive force after the current reflow solder strip and a plurality of interconnection solder strips are welded, so that cold welding is easy to occur.
In order to achieve the purpose of the utility model, the technical scheme adopted by the utility model is as follows: designing a barrier type photovoltaic welding strip, which comprises a copper sheet and a tin plating layer;
copper sheets; the tinning layer is plated on the outer wall of the copper sheet; the copper sheet is characterized in that clamping grooves are respectively formed in two sides of the copper sheet, tin bars are respectively arranged on two sides of the inner wall of the tin plating layer, and the tin bars are welded with the clamping grooves.
Preferably, an insulating layer is arranged on the outer side of the copper sheet, and the insulating layer is located between the copper sheet and the tin plating layer.
Preferably, the clamping groove is close to the welding side of the copper sheet.
Preferably, the inner bottom wall of the clamping groove is provided with an arc-shaped surface, and both side walls of the clamping groove are provided with inclined surfaces; wherein, two draw-in groove lateral walls and draw-in groove inner bottom wall form outwards open-ended loudspeaker form.
Preferably, the tin bar is matched with the clamping groove.
Compared with the prior art, the utility model has the beneficial effects that:
1. the utility model has the advantages of strengthening the firmness of the welded copper sheet welding side after welding tin and avoiding the occurrence of virtual welding by arranging the tin bars and the clamping grooves, and solves the problem that the virtual welding is easy to occur due to smaller adhesive force after the melted tin is cooled and molded when the bus welding strip and the plurality of interconnecting welding strips are welded.
2. The horn-shaped clamping groove is arranged, so that molten soldering tin can enter the clamping groove more easily, the soldering tin in the clamping groove forms a horn shape, the soldering tin is not easy to fall off after being clamped with the clamping groove, and the connection is more stable.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic view of the structure of the tin plating layer of the present utility model;
FIG. 3 is a schematic view of the copper sheet connection structure of the present utility model;
FIG. 4 is an enlarged schematic view of FIG. 3A in accordance with the present utility model;
in the figure: 1. copper sheets; 2. an insulating layer; 3. tinning;
101. a clamping groove;
301. tin bars.
Detailed Description
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
example 1: a barrier type photovoltaic solder strip, see fig. 1 to 4, comprises a copper sheet 1 and a tin plating layer 3; a copper sheet 1; the tinning layer 3 is plated on the outer wall of the copper sheet 1; wherein, draw-in groove 101 has been seted up respectively to copper sheet 1 both sides, and tinning layer 3 inner wall both sides are equipped with tin bar 301 respectively, and tin bar 301 and draw-in groove 101 butt fusion. The utility model has the advantages of enhancing the firmness of the welded soldering tin of the welding side of the copper sheet 1, avoiding the occurrence of false soldering by arranging the tin bars 301 and the clamping grooves 101, and solving the problem that the false soldering is easy to occur due to smaller adhesive force after the melted tin is cooled and molded when the busbar and the plurality of interconnection welding strips are welded.
Specifically, the outside of copper sheet 1 is equipped with insulating layer 2, and insulating layer 2 is located between copper sheet 1 and tin-plating layer 3. According to the utility model, the insulating layer 2 is arranged on the unwelded side of the copper sheet 1, so that the insulating layer 2 plays a role in external blocking and insulation when the copper sheet 1 passes through current.
Further, the clamping groove 101 is close to the welding side of the copper sheet 1. The solder in the clamping groove 101 and the solder on the welding side of the copper sheet 1 are melted and cooled to form a whole, so that the connection is firmer.
Still further, the inner bottom wall of the clamping groove 101 is provided with an arc-shaped surface, and both side walls of the clamping groove 101 are provided with inclined surfaces; wherein, the two side walls of the clamping groove 101 and the inner bottom wall of the clamping groove 101 form a horn shape which is open outwards. The horn-shaped clamping groove 101 is arranged, so that molten soldering tin can enter the clamping groove 101 more easily, the soldering tin in the clamping groove 101 is horn-shaped, and the soldering tin is not easy to fall off after being clamped with the clamping groove 101, and the connection is more stable.
It should be noted that the tin bar 301 is adapted to the card slot 101. The arrangement of the tin bars 301 ensures that a sufficient amount of solder can be melted and welded, and avoids the situation that the tin amount of the tin plating layer 3 is insufficient during welding.
Working principle: by using the device provided by the utility model, the busbar welding strip is placed at the busbar welding position of the battery piece, the welding side of the copper sheet 1 corresponds to the busbar welding position of the battery piece, the tin plating layer 3 and the tin bar 301 at the welding side of the copper sheet 1 are melted through the welding head of the external welding machine, and the tin plating layer of the extending part of the interconnection welding strip is melted, so that the tin plating layer 3 at the welding side of the copper sheet 1 and the tin plating layer of the extending part of the interconnection welding strip are melted and then welded together, the melted tin part enters the clamping groove 101 to form horn-shaped tin, and the welding side of the copper sheet 1, the extending part of the interconnection welding strip and the tin in the clamping groove 101 are welded into a whole, so that the firmness of the welded tin at the welding side of the copper sheet 1 is enhanced.
The embodiments of the present utility model are disclosed as preferred embodiments, but not limited thereto, and those skilled in the art will readily appreciate from the foregoing description that various modifications and variations can be made without departing from the spirit of the present utility model.
Claims (5)
1. A barrier photovoltaic solder strip, comprising:
copper sheets;
the tinning layer is plated on the outer wall of the copper sheet;
the copper sheet is characterized in that clamping grooves are respectively formed in two sides of the copper sheet, tin bars are respectively arranged on two sides of the inner wall of the tin plating layer, and the tin bars are welded with the clamping grooves.
2. The barrier type photovoltaic solder strip of claim 1, wherein an insulating layer is provided on the outside of the copper sheet, and the insulating layer is located between the copper sheet and the tin plating layer.
3. The barrier photovoltaic solder strip of claim 1, wherein the clip groove is adjacent to the solder side of the copper sheet.
4. The barrier type photovoltaic solder strip of claim 1, wherein the inner bottom wall of the clamping groove is provided with an arc surface, and both side walls of the clamping groove are provided with inclined surfaces;
wherein, two draw-in groove lateral walls and draw-in groove inner bottom wall form outwards open-ended loudspeaker form.
5. The barrier-type photovoltaic solder strip of claim 1, wherein the tin bars are adapted to the clamping grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321399090.7U CN220172146U (en) | 2023-06-05 | 2023-06-05 | Barrier type photovoltaic solder strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321399090.7U CN220172146U (en) | 2023-06-05 | 2023-06-05 | Barrier type photovoltaic solder strip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220172146U true CN220172146U (en) | 2023-12-12 |
Family
ID=89063190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321399090.7U Active CN220172146U (en) | 2023-06-05 | 2023-06-05 | Barrier type photovoltaic solder strip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220172146U (en) |
-
2023
- 2023-06-05 CN CN202321399090.7U patent/CN220172146U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |