CN204538034U - A kind of welding for solar module - Google Patents
A kind of welding for solar module Download PDFInfo
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- CN204538034U CN204538034U CN201520056738.XU CN201520056738U CN204538034U CN 204538034 U CN204538034 U CN 204538034U CN 201520056738 U CN201520056738 U CN 201520056738U CN 204538034 U CN204538034 U CN 204538034U
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- welding
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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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Abstract
The utility model discloses a kind of welding for solar module, comprise metal wire body, the cross section of described metal wire body is arc, and its area is more than or equal to semicircle area.The utility model, by arranging a tangent plane on the basis of circle, under the prerequisite not affecting shading loss, not obvious increase resistance, can not only reduce welding height, and can also increase the reliability of welding, have positive realistic meaning.
Description
Technical field
The utility model relates to area of solar cell, is specifically related to a kind of welding for solar module.
Background technology
Conventional fossil fuel approach exhaustion day by day, in all sustainable energies, solar energy is undoubtedly the most clean, the most general and most potential alternative energy source of one.Photovoltaic generation is one of generation technology of most sustainable development desired characteristics.At present, in all solar cells, silicon solar cell is one of solar cell obtaining business promotion on a large scale, this is because silicon materials have very abundant reserves in the earth's crust, the solar cell of other types compared by silicon solar cell simultaneously, has excellent electric property and mechanical performance.In the development of following photovoltaic technology, along with the further raising of silicon solar cell photoelectric properties, the further reduction of silicon materials price, silicon solar cell will occupy consequence at photovoltaic art.
Welding is the welder be used on solar module, mainly plays the effect connecting conduction.Welding conventional in current industry is all elongated, mainly contains 2 kinds, and one be cross section is rectangular welding, and two is cross sections is circular welding.Be for rectangular welding for cross section, this welding shading is serious, have impact on component power.For the welding that cross section is circle, although major part can be gone back to cell piece surface by the light reflection be irradiated on it by circular welding, thus its shading is avoided to affect; But circular welding has two shortcomings: (1) falls low-resistance object to reach, the diameter of circular welding needs the larger of setting, and when this just causes welding, the aspect ratio of welding is higher, and this just must increase the thickness of EVA in assembly, causes cost increase; (2) circular welding is too little with the contact-making surface of cell piece, thus causes soldering reliability poor.
Summary of the invention
The purpose of this utility model is to provide a kind of welding for solar module.
To achieve the above object of the invention, the technical solution adopted in the utility model is: a kind of welding for solar module, comprises metal wire body, and the cross section of described metal wire body is arc, and its area is more than or equal to semicircle area.
Above, the cross section of described metal wire body is arc, and its area is greater than semicircle area, and namely its cross section is more than half circle, is equivalent to cut away a part on original circular basis.Its tangent plane is used to be formed with battery and is electrically connected.
In technique scheme, in the cross section of described metal wire body, the angle corresponding to its string is 45 ~ 180 degree.
In technique scheme, the tangential section place of described metal wire body is provided with tangent plane coating.The effect of tangent plane coating is used to cell piece electrical connection, and conducting resinl can certainly be adopted to replace.
Preferably, described tangent plane coating is low-melting-point metal layer or low-melting point metal alloy layer; Described low-melting-point metal layer is selected from Bi, In, Sn or Pb layer, and described low-melting point metal alloy layer is selected from two or more alloy-layer any in Bi, In, Sn, Pb.In the process of lamination, the metal or alloy layer of low melting point is understood melting and realizes being electrically connected with the metal electrode of solar cell.Certainly, tangent plane coating also can adopt conventional welding material, realizes the electrical connection with metal electrode by welding manner.
In technique scheme, described metal wire is copper cash.Its diameter is 150 ~ 800 microns.
In technique scheme, the cambered surface place of described metal wire body is provided with reflector.Reflector can adopt high reverse--bias material, its objective is that the light reflection be irradiated on it goes back to cell piece surface by major part, improves the utilance of light further.
Described reflector can be reflector layer (playing reflex), can be also oxide protective layer simultaneously, play the effect of oxidation protection.
Tangent plane coating and reflector can adopt same material.
Above, described reflector is low-melting-point metal layer or low-melting point metal alloy layer; Described low-melting-point metal layer is selected from Bi, In, Sn or Pb layer, and described low-melting point metal alloy layer is selected from two or more alloy-layer any in Bi, In, Sn, Pb.The selection of metal alloy layer is the consumption in order to save noble metal, such as In.
Preferably, tangent plane coating and reflector can adopt different materials, can reduce the consumption of noble metal so further, reduce costs.
In technique scheme, the thickness in described reflector is 0.5 ~ 30 micron.Preferably 0.5 ~ 20 micron.
Because technique scheme is used, the utility model compared with prior art has following advantages:
1. the utility model devises a kind of welding for solar module, by arranging a tangent plane on the basis of circle, under the prerequisite not affecting shading loss, not obvious increase resistance, welding height can not only be reduced, and the reliability of welding can also be increased, there is positive realistic meaning;
2. the welding of the utility model design can also combine to use with high reverse--bias material, can improve the utilance of light further, improve the power output of assembly;
3. the utility model arranges different coatings respectively in welding cambered surface and tangent plane, and the composition of coating is optimized, the consumption of noble coatings can be saved, reduce costs, the compatibility of subsequent technique can also be improved simultaneously, can better match from different electric connection mode;
4. structure of the present utility model is simple, and be easy to preparation, cost is lower, is suitable for applying.
Accompanying drawing explanation
Fig. 1 is the cutaway view of the utility model embodiment one.
Wherein: 1, metal wire body; 2, tangent plane coating; 3, reflector.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described:
Embodiment one.
Shown in Figure 1, a kind of welding for solar module, comprises metal wire body 1, and the cross section of described metal wire body is arc, and its area is greater than semicircle area.
The tangential section place of described metal wire body is provided with tangent plane coating 2.
Described tangent plane coating is In/Sn alloy.
In the cross section of described metal wire body, the angle corresponding to its string is 80 degree.
Described metal wire is copper cash.
The diameter of described metal wire is 500 microns.
The outer surface at the arc place of described metal wire body is provided with reflector 3.Described reflector is tin layers.Namely the present embodiment the midsagittal plane coating and reflector can adopt not same material.
The thickness in described reflector is 10 microns.
Claims (9)
1. for a welding for solar module, comprise metal wire body (1), it is characterized in that: the cross section of described metal wire body is arc, and its area is more than or equal to semicircle area.
2. welding according to claim 1, is characterized in that: the tangential section place of described metal wire body is provided with tangent plane coating (2).
3. welding according to claim 2, is characterized in that: described tangent plane coating is low-melting-point metal layer or low-melting point metal alloy layer; Described low-melting-point metal layer is selected from Bi, In, Sn or Pb layer, and described low-melting point metal alloy layer is selected from two or more alloy-layer any in Bi, In, Sn, Pb.
4. welding according to claim 1, is characterized in that: in the cross section of described metal wire body, and the angle corresponding to its string is 45 ~ 180 degree.
5. welding according to claim 1, is characterized in that: described metal wire is copper cash.
6. welding according to claim 1, is characterized in that: the diameter of described metal wire is 150 ~ 800 microns.
7. welding according to claim 1, is characterized in that: the cambered surface place of described metal wire body is provided with reflector (3).
8. welding according to claim 7, is characterized in that: the thickness in described reflector is 0.5 ~ 30 micron.
9. the welding according to claim 7 or 8, is characterized in that: described reflector is low-melting-point metal layer or low-melting point metal alloy layer; Described low-melting-point metal layer is selected from Bi, In, Sn or Pb layer, and described low-melting point metal alloy layer is selected from two or more alloy-layer any in Bi, In, Sn, Pb.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520056738.XU CN204538034U (en) | 2015-01-27 | 2015-01-27 | A kind of welding for solar module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520056738.XU CN204538034U (en) | 2015-01-27 | 2015-01-27 | A kind of welding for solar module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204538034U true CN204538034U (en) | 2015-08-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520056738.XU Active CN204538034U (en) | 2015-01-27 | 2015-01-27 | A kind of welding for solar module |
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| CN (1) | CN204538034U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104576767A (en) * | 2015-01-27 | 2015-04-29 | 苏州阿特斯阳光电力科技有限公司 | Solder strip for solar cell module |
-
2015
- 2015-01-27 CN CN201520056738.XU patent/CN204538034U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104576767A (en) * | 2015-01-27 | 2015-04-29 | 苏州阿特斯阳光电力科技有限公司 | Solder strip for solar cell module |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |