CN202487195U - Extremely soft tin-coated copper belt for solar cell - Google Patents
Extremely soft tin-coated copper belt for solar cell Download PDFInfo
- Publication number
- CN202487195U CN202487195U CN 201220068861 CN201220068861U CN202487195U CN 202487195 U CN202487195 U CN 202487195U CN 201220068861 CN201220068861 CN 201220068861 CN 201220068861 U CN201220068861 U CN 201220068861U CN 202487195 U CN202487195 U CN 202487195U
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- China
- Prior art keywords
- tin
- coated
- solar cell
- coated copper
- copper belt
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- 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
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Abstract
The utility model relates to an extremely soft tin-coated copper belt for a solar cell. The extremely soft tin-coated copper belt for the solar cell comprises a copper matrix and an alloy coating, wherein the alloy coating is uniformly coated on the front and back surfaces of the copper matrix to form the tin-coated copper belt. The single-sided alloy coating of the front and back surfaces is 0.01-0.03mm in thickness. The tin-coated copper belt has yield strength of less than or equal to 50 N/mm2, tensile strength of more than or equal to 135N/mm2 and elongation of more than or equal to 15%. When being soldered with the solar cell, the tin-coated copper belt clings to the solar cell, so that cold solder joint, unsolder and deflective solder caused by curling and arching can be avoided, the power generation efficiency of the solar cell can be comprehensively improved and the fragmentation rate is reduced, the cost is saved and the profit margin is improved for clients, and the competitiveness of products is improved.
Description
Technical field
The utility model relates to a kind of dead-soft and is coated with the tin copper strips, and specifically the critical component in the solar cell chip module belongs to mechanical equipment technical field.
Background technology
Solar cell is a kind of very promising novel power supply, and it has permanent, spatter property and flexibility three big advantages.Solar battery life is long, as long as the sun exists, solar cell just can once be invested and long-term the use; Compare with thermal power generation, nuclear energy power generation, solar cell can not cause environmental pollution; Solar cell can be realized large, medium and small combination easily, arrives the medium-sized power station of gigawatt greatly, and is little of the solar battery group that only supplies a family to use, and this is that other power supply is incomparable.Along with the emergence of domestic photovoltaic industry, be the emphasis that whole photovoltaic industry is paid close attention to as the battery sheet of photovoltaic module core.The fragment rate that how to reduce its cost, improve the generating rate, reduces in the production process will be the key of manufacturing solar cells sheet.Then it plays an important role as the connecting line (being coated with the tin copper strips) of indispensable series-connected cell sheet in the assembly.Being coated with the tin copper strips needs high temperature auxiliary when being connected with the battery sheet; Connecting line under action of high temperature (being coated with the tin copper strips) and battery sector-meeting generation thermal stress change; So because deformation (warpage) in various degree takes place in the battery sector-meeting in the process of cooling of the difference of thermal stress; Thin more battery sheet deformation (warpage) is serious more, and this deformation (warpage) crackle can occur or produce fragment in the operation manufacturing solar cells board laminate of back, directly influences the generating efficiency and the cost of assembly.And in manual welding, be coated with tin band self stress influence, be coated with the tin band and can warpage have a strong impact on welding efficiency and welding effect.The stress big (mainly showing finished product hardness and yield strength two aspects) that existing main flow is coated with the tin copper strips when client is used owing to being influenced by heat Stress Release; The stress retraction drives battery sheet retraction and causes the deformation of battery sheet again in the process of cooling, and flowing into down, operation then causes crackle and fragment.If in manual welding, then also can cause and curl or arch upward, influence welding quality and reduction welding efficiency because of being coated with the conference of tin copper strips stress.
Summary of the invention
The purpose of the utility model is to overcome above-mentioned weak point; Provide a kind of solar battery sheet to be coated with the tin copper strips with dead-soft; Can reduce the stress deformation on the material to greatest extent; Can raising be coated with tin copper strips performance, capture dead-soft and be coated with tin copper strips production technology difficulty, can improve the generating efficiency and reduction fragment rate of solar battery sheet comprehensively.
According to the technical scheme that the utility model provides, solar battery sheet is coated with the tin copper strips with dead-soft and comprises copper material matrix, alloy coat, and the positive and negative surface formation that said alloy coat is coated in the copper material matrix uniformly is coated with the tin copper strips.
The single face alloy coat thickness on said positive and negative surface is 0.01-0.03mm.
Said yield strength≤the 50N/mm that is coated with the tin copper strips
2, tensile strength>=135N/mm
2, elongation>=15%; The said specification that is coated with the tin copper strips: width range is 0.5-15mm, and thickness range is that its angularity of 0.03-1mm is 0～3mm.
The utlity model has following advantage:
The utility model dead-soft is coated with the tin copper strips and is formed through surface applied tin lead or lead-free alloy greater than 99.95% copper material matrix by purity, and finished surface is smooth, smooth, color and luster is even; Be coated with in the tin copper strips production process its hardness of control and yield strength at dead-soft, start with, hardness and yield strength are reduced under the constant prerequisite of other performances as far as possible, make its Stress Release that limit minimizing brings because of heating when client is used from technology; When welding, reduce because of being coated with tin copper strips stress; Being coated with the tin copper strips is coated with the tin band and is close to the battery sheet when welding with the battery sheet; The rosin joint of having avoided causing, sealing-off and weldering partially because of curling, arching upward; Can improve the generating efficiency and reduction fragment rate of solar battery sheet comprehensively, help the client to practice thrift cost and enlarge profit space, improve self product competitiveness.
Description of drawings
Fig. 1 is the utility model structural representation.
Embodiment
Following the utility model will combine the embodiment in the accompanying drawing to further describe:
As shown in Figure 1, comprise copper material matrix 1, alloy coat 2.
The utility model guarantees the performance before copper strips is coated with tin.Adopt the Buchholz protection bright annealing furnace that copper material is annealed, Buchholz protection is to guarantee that the annealing copper material is not oxidized, increases simultaneously that the adjustable permanent tension force of numerical control unreels, the mode of permanent tension rolling ensures that annealing back copper material reaches performance requirement:
1) copper content >=99.95%
2), resistivity TU1≤0.0168 Ω mm
2/ m; T2≤0.017241 Ω mm
2/ m.
The utility model adopts the low-tension process to be coated with the tin guarantee and is coated with the requirement of tin copper strips finished product.
The positive and negative surface formation that said alloy coat 2 is coated in copper material matrix 1 uniformly is coated with the tin copper strips.The single face alloy coat thickness on said positive and negative surface is 0.01-0.03mm.When copper strips is coated with tin, adopt accurate adjustable unreeling structure, guarantee that copper strips is in constant low-tension in whole process; Adopt numerical control triaxial three linkage manner to be equipped with tension force, speed, position transducer when being coated with the tin rolling, guaranteed that the tension force of take-up process is minimum, take-up is evenly neat.
The alloy coat composition:
1) the plumbous series of tin: tin 60% lead 40%, tin 63% lead 37%, tin 62%, lead 36%, silver 2%.
2) unleaded series: tin 97%, silver 3%.
Dead-soft is coated with tin copper strips the key technical indexes:
1), tensile strength:>=135N/mm
2
2), yield strength :≤50N/mm
2
3), elongation: >=15%
The said specification that is coated with the tin copper strips: width range is 0.5-15mm, and thickness range is 0.03-1mm, and its angularity is 0-3mm.
Claims (3)
1. a solar battery sheet is coated with the tin copper strips with dead-soft, comprises copper material matrix (1), it is characterized in that: also comprise alloy coat (2), the positive and negative surface formation that said alloy coat (2) is coated in copper material matrix (1) uniformly is coated with the tin copper strips.
2. solar battery sheet as claimed in claim 1 is coated with the tin copper strips with dead-soft, it is characterized in that: single face alloy coat (2) thickness on said positive and negative surface is 0.01-0.03mm.
3. solar battery sheet as claimed in claim 1 is coated with the tin copper strips with dead-soft, it is characterized in that: the said tin copper strips width range that is coated with is 0.5-15mm, and thickness range is 0.03-1mm, and its angularity is 0～3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220068861 CN202487195U (en) | 2012-02-28 | 2012-02-28 | Extremely soft tin-coated copper belt for solar cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220068861 CN202487195U (en) | 2012-02-28 | 2012-02-28 | Extremely soft tin-coated copper belt for solar cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202487195U true CN202487195U (en) | 2012-10-10 |
Family
ID=46961599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220068861 Expired - Fee Related CN202487195U (en) | 2012-02-28 | 2012-02-28 | Extremely soft tin-coated copper belt for solar cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202487195U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102592702A (en) * | 2012-02-28 | 2012-07-18 | 无锡市斯威克科技有限公司 | Dead-soft tin-coated copper belt for solar cell |
| CN103341698A (en) * | 2013-07-09 | 2013-10-09 | 无锡市斯威克科技有限公司 | Precoated tin-coated copper belt |
| CN105047249A (en) * | 2015-08-25 | 2015-11-11 | 无锡大力神钢构科技有限公司 | Lead-free environment-friendly tin-coating copper strip |
-
2012
- 2012-02-28 CN CN 201220068861 patent/CN202487195U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102592702A (en) * | 2012-02-28 | 2012-07-18 | 无锡市斯威克科技有限公司 | Dead-soft tin-coated copper belt for solar cell |
| CN103341698A (en) * | 2013-07-09 | 2013-10-09 | 无锡市斯威克科技有限公司 | Precoated tin-coated copper belt |
| CN105047249A (en) * | 2015-08-25 | 2015-11-11 | 无锡大力神钢构科技有限公司 | Lead-free environment-friendly tin-coating copper strip |
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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: 20121010 Termination date: 20190228 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |