CN220306264U - Low-resistance photovoltaic solder strip - Google Patents
Low-resistance photovoltaic solder strip Download PDFInfo
- Publication number
- CN220306264U CN220306264U CN202321133115.9U CN202321133115U CN220306264U CN 220306264 U CN220306264 U CN 220306264U CN 202321133115 U CN202321133115 U CN 202321133115U CN 220306264 U CN220306264 U CN 220306264U
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- Prior art keywords
- solder
- hollow copper
- column
- resistance
- strip
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- 229910000679 solder Inorganic materials 0.000 title claims description 44
- 229910052802 copper Inorganic materials 0.000 claims abstract description 48
- 239000010949 copper Substances 0.000 claims abstract description 48
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 47
- 238000003466 welding Methods 0.000 claims abstract description 37
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052709 silver Inorganic materials 0.000 claims abstract description 23
- 239000004332 silver Substances 0.000 claims abstract description 23
- 238000005476 soldering Methods 0.000 claims description 16
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 15
- 239000000155 melt Substances 0.000 claims description 4
- 238000007711 solidification Methods 0.000 claims description 3
- 230000008023 solidification Effects 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims description 2
- 241001391944 Commicarpus scandens Species 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Landscapes
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
Abstract
The utility model relates to a low-resistance photovoltaic welding strip, which aims to solve the technical problems that the existing photovoltaic welding strip is not moderate in hardness and cannot achieve both mechanical and manual welding operations, and the full copper design resistance is high. The welding strip has the advantages that the hardness of the main body of the welding strip can be customized according to the needs, so that the size of a silver column is increased when automatic equipment is used, the automatic equipment is not easy to break when in use, but the size of a hollow copper column is increased when in manual welding, the operation is convenient, the resistance of the welding strip can be optimized through the arrangement of the silver column, the resistance value of a silver material is lower than that of a copper resistance, and the effect of low resistance is realized.
Description
Technical Field
The utility model relates to a photovoltaic solder strip, in particular to a low-resistance photovoltaic solder strip.
Background
Along with the rapid development of society and the progress of science and technology, solar energy is widely applied, the solar energy is used as a welding strip for welding a photovoltaic module in solar energy application, the welding strip plays an important role in welding, the welding strip is an important raw material in the welding process of the photovoltaic module, the quality of the welding strip directly influences the collection efficiency of the current of the photovoltaic module, the power of the photovoltaic module is greatly affected, and the thickness of the welding strip is determined according to the thickness of a battery piece and the short-circuit current according to the standard.
The existing photovoltaic welding strip is usually provided with copper and tin to form a photovoltaic welding strip main body, but the structure is too high in hardness, so that the photovoltaic welding strip is convenient to use in automatic equipment, the operation is inconvenient in manual welding, the structure is soft in hardness, the automatic equipment is easy to break in use, meanwhile, after the welding of the whole structure, the welding strip is easy to unweld under the action of stress, when current passes through, the copper resistivity is not optimal, and the resistance is high. In view of this, we propose a low resistance photovoltaic solder strip.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art, adapt to the actual needs, provide a low-resistance photovoltaic welding strip, solve the technical problems that the existing photovoltaic welding strip is not moderate in hardness, cannot realize the mechanical and manual welding operation, and adopts an all-copper design to have higher resistance.
In order to achieve the purpose of the utility model, the technical scheme adopted by the utility model is as follows: the low-resistance photovoltaic welding strip comprises a welding strip main body, wherein the welding strip main body is formed by a plurality of hollow copper columns in parallel, silver columns are inserted in the middle of the hollow copper columns in an inserting mode, and soldering tin base surfaces are welded on the surfaces of the plurality of hollow copper columns.
Preferably, the surface of the hollow copper column is provided with side rough surface gaps which are convenient for soldering tin, and a position gap for storing soldering tin is reserved between the side rough surface gaps of the two hollow copper columns.
Preferably, the solder base surface is a surface formed by solidification of melted solder, the surface of the solder base surface is provided with upper rough surface gaps, and the upper rough surface gaps are provided with a plurality of capillary cavities.
Preferably, a slot for fixing the silver column is arranged in the middle of each hollow copper column, and the slot is fixed with the fixed silver column through soldering tin.
Preferably, the right upper end of the position gap of the soldering base surface is provided with a trapezoid groove 4 convenient to cut, and the soldering base surface melts and flows into the position gap to improve the rigidity of the two hollow copper columns.
Compared with the prior art, the utility model has the beneficial effects that:
1. the thickness of the silver column is adjusted by adjusting the wall thickness of the hollow copper column, so that the overall hardness of the welding strip main body 1 is adjusted, the welding strip main body can be customized according to the needs, automatic welding equipment and labor can be used, the resistance of the welding strip can be optimized by setting the silver column, the silver material is lower than the resistance value of the copper resistance, and the effect of low resistance is realized.
2. The upper rough surface gap is formed by the raised strips, and when the raised strips are melted, the circuit contacts are fully covered, the fixing area is increased, and the connection strength is increased, so that the off-welding is prevented.
Drawings
FIG. 1 is a schematic diagram of a front perspective view of the present utility model;
FIG. 2 is an enlarged schematic view of the trapezoid slot of the present utility model;
FIG. 3 is a schematic view of an enlarged position gap structure according to the present utility model;
fig. 4 is an enlarged schematic view of the slot according to the present utility model.
In the figure: 1. a solder strip body; 11. a solder base surface; 12. silver columns; 13. a hollow copper column; 2. upper burr clearance; 3. side burr gaps; 4. a trapezoid groove; 5. a position gap; 6. a slot.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1:
as shown in fig. 1 to 4, the solder strip comprises a solder strip main body 1, wherein the solder strip main body 1 is formed by juxtaposing a plurality of hollow copper columns 13, silver columns 12 are inserted in the middle of the hollow copper columns 13, and solder base surfaces 11 are welded on the surfaces of the plurality of hollow copper columns 13.
The hollow copper column 13 may be made of red copper, and has low resistivity, low heat productivity, and flat upper and lower end surfaces of the hollow copper column 13, so that the connection between the solder base surface 11 and the hollow copper column 13 is more stable.
The silver column 12 is inserted into the hollow copper column 13, the hardness of the solder strip main body 1 is adjusted by reducing the dosage of copper, or the thickness of the hollow copper column 13 is adjusted, the thickness of the silver column 12 is adjusted, the whole hardness of the solder strip main body 1 can also be adjusted, the solder base surface 11 is heated to melt and solidify again to strengthen and fix a plurality of the hollow copper columns 13, the hardness of the solder strip main body 1 can be customized according to the requirement, the size of the silver column 12 is increased when automatic equipment is used, the automatic equipment is not easy to break when being used, but the size of the hollow copper column 13 is improved when being welded manually, the operation is convenient, the resistance of the solder strip can be optimized through the arrangement of the silver column 12, the silver material is lower than the resistance value of copper, and the effect of low resistance is realized.
Specifically, the side rough surface gaps 3 convenient for soldering tin are arranged on the surfaces of the hollow copper columns 13, and a position gap 5 for storing soldering tin is reserved between the side rough surface gaps 3 of the two hollow copper columns 13. According to the utility model, after the solder base surface 11 is heated and melted, the side rough surface gap 3 and the position gap 5 are filled, the solder base surface 11 at the lower end of the hollow copper column 13 plays a role in connecting a circuit, the solder base surface 11 at the upper end of the hollow copper column 13 plays a role in connecting and fixing the hollow copper columns 13, and the side rough surface gap 3 can connect the two hollow copper columns 13 more stably.
Further, the solder base 11 is formed by solidifying melted solder, and the surface of the solder base 11 is provided with upper burr gaps 2, and the upper burr gaps 2 are provided as a plurality of capillary cavities. When the upper burr surface gap 2 of the soldering tin base surface 11 at the lower end of the hollow copper column 13 contacts and melts, the upper burr surface gap 2 is formed by the convex strips, so that the convex strips can fully cover the circuit contacts when melting, the connection strength is increased, and the solder strip is prevented from being detached, and meanwhile, the upper burr surface gap 2 is arranged at two sides of the solder strip main body 1 for the convenience of use, and any surface can be used.
Still further, slot 6 for fixing silver column 12 is provided in the middle of each hollow copper column 13, and slot 6 is fixed with fixed silver column 12 by soldering tin. According to the utility model, the silver column 12 can be limited and fixed by the slot 6, meanwhile, the size of the slot 6 determines the size of the silver column 12, namely the whole softness and hardness degree of the welding strip main body 1, and also the resistance of the welding strip main body 1, the shape of the slot 6 can be set to be arbitrary, and only the slot 6 is required to be arranged in the middle of a copper column, and the hollow copper column 13 is formed.
It should be noted that, the trapezoid groove 4 which is convenient to cut is arranged at the right upper end of the position gap 5 of the solder base surface 11, and the solder base surface 11 melts and flows into the position gap 5 to improve the rigidity of the two hollow copper columns 13. According to the utility model, the solder strip main body 1 is selected according to the size of the circuit contact, when the contact is welded, if the solder strip main body 1 needs to be cut to meet the use requirement, a user can cut along the trapezoid grooves 4, the distance between the two trapezoid grooves 4 can be set to be a fixed value, so that the cutting is convenient for the user, the use range of the solder strip main body 1 can be increased by the arrangement, the soldering tin solution can be contained in the position gap 5, and the two copper columns can be connected and fixed by soldering tin solidification, so that the structural stability is improved.
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. The utility model provides a low resistance photovoltaic solder strip, includes solder strip main part (1), its characterized in that: the welding strip comprises a welding strip main body (1) and is characterized in that the welding strip main body is composed of a plurality of hollow copper columns (13) in parallel, silver columns (12) are inserted in the middle of the hollow copper columns (13), and a soldering tin base surface (11) is welded on the surface of the plurality of hollow copper columns (13).
2. The low resistance photovoltaic solder strip of claim 1, wherein: the surface of the hollow copper column (13) is provided with side rough surface gaps (3) which are convenient for soldering tin, and a position gap (5) for storing soldering tin is reserved between the two side rough surface gaps (3) of the hollow copper column (13).
3. The low resistance photovoltaic solder strip of claim 1, wherein: the solder base surface (11) is formed by solidification after solder melting, the surface of the solder base surface (11) is provided with an upper rough surface gap (2), and the upper rough surface gap (2) is provided with a plurality of capillary cavities.
4. The low resistance photovoltaic solder strip of claim 1, wherein: the middle part of each hollow copper column (13) is provided with a slot (6) for fixing the silver column (12), and the slot (6) is fixed with the fixed silver column (12) through soldering tin.
5. The low resistance photovoltaic solder strip of claim 1, wherein: the right upper end of the solder base surface (11) positioned in the position gap (5) is provided with a trapezoid groove (4) convenient to cut, and the solder base surface (11) melts and flows into the position gap (5) to improve the rigidity of the two hollow copper columns (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321133115.9U CN220306264U (en) | 2023-05-12 | 2023-05-12 | Low-resistance photovoltaic solder strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321133115.9U CN220306264U (en) | 2023-05-12 | 2023-05-12 | Low-resistance photovoltaic solder strip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220306264U true CN220306264U (en) | 2024-01-05 |
Family
ID=89348237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321133115.9U Active CN220306264U (en) | 2023-05-12 | 2023-05-12 | Low-resistance photovoltaic solder strip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220306264U (en) |
-
2023
- 2023-05-12 CN CN202321133115.9U patent/CN220306264U/en active Active
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