CN102290125A - Composite solar photovoltaic confluence welding band and preparation method thereof - Google Patents
Composite solar photovoltaic confluence welding band and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a composite solar photovoltaic confluence welding band and a preparation method thereof, which relate to a solar photovoltaic welding conduction band and a preparation method thereof and are used for solving the technical problem of high cost of a preparation method of soft copper in the conventional tin-plated copper conduction band. The composite solar photovoltaic confluence welding band is a parallel three-layer composite structural band consisting of a first copper layer, a middle aluminum layer and a second copper layer, or a core-spun composite structural band consisting of an aluminum and a copper layer, wherein the copper layer is coated on the outer surface of the aluminum. In the preparation method, the composite solar photovoltaic confluence welding band is prepared by rolling with a flattener. Aluminum is taken as a middle layer or a core, so that fatigue breakage of a welding band or a polycrystalline silicon cell panel under thermal stress can be avoided, and the cost is low; and the composite solar photovoltaic confluence welding band is applied to a solar device.
Description
Technical field
The present invention relates to photovoltaic welding conduction band and preparation method thereof.
Background technology
Along with international economic environment is increasingly competitive, the national economic development faces huge challenge, and the contention and the status of strategic plan in the overall background of whole economy market in new forms of energy market become increasingly conspicuous.Conventional energy shortage simultaneously to conservation of natural environment require harsh day by day down; solar energy is a kind of as regenerative resource; status as the most important components in the future source of energy structure also highlights day by day; how to improve the service efficiency and the life-span of solar energy equipment, its importance is self-evident.The life-span of solar components depends primarily on the fatigue life of its interconnector, promptly is coated with the useful life of tin copper conduction band.Non-dismountable owing to the Highgrade integration of modern sun energy device design, wherein between each photovoltaic assembly such as polysilicon and ceramic constituent element under each at work temperature change thermal cycle thermal stress will produce strain and not match, width is that 2mm～62mm, thickness are that the tin copper conduction band that is coated with of 0.1mm～0.25mm just very easily causes the thermal fatigue fracture as the conduction connecting line in the thermal cycle process, even under thermal stress, cause polysilicon solar cell plate generation embrittlement, result be the termination solar energy equipment operation.In order to overcome this defective that is coated with tin copper conduction band, generally be to adopt the cold rolling reduction of control copper or the method that copper carries out annealing recrystallization is obtained soft attitude copper, the vickers hardness hv 0.2＜50 of soft attitude copper, tensile strength＞240MPa, can reduce the probability that the fracture of thermal fatigue fracture thermal fatigue produces, but preparation method's energy consumption of soft attitude copper is big, the cost height.
Summary of the invention
The present invention will solve the existing high technical problem of preparation method's cost that is coated with soft attitude copper in the tin copper conduction band, and the composite solar photovoltaic welding and preparation method thereof that confluxes is provided.
The composite solar photovoltaic of the present invention welding that confluxes is the parallel three-layer composite structure band that is made of the first bronze medal layer, aluminium lamination and the second bronze medal layer, the width of composite construction band is 2mm～62mm, thickness is 0.1mm～0.25mm, in the middle of wherein aluminium lamination is positioned at, the first bronze medal layer and the second bronze medal layer lay respectively at the upper and lower both sides of aluminium lamination, the contact rate that the thickness of aluminium lamination accounts for 50%～80%, the first bronze medal layer of composite construction tape thickness and aluminium lamination greater than the contact rate of 99%, the second bronze medal layer and aluminium lamination greater than 99%.
Above-mentioned composite solar photovoltaic confluxes the preparation method of welding to carry out according to the following steps: with thickness is that the aluminium sheet of 0.10mm～0.25mm is as the intermediate layer, upper and lower cladding thickness is the copper coin of 0.03mm～0.07mm, join in the calender rolling, obtain composite board, cut into the tape that width is 2mm～62mm then, obtain the composite solar photovoltaic welding that confluxes.
The composite solar photovoltaic of the present invention welding that confluxes is the cladded type composite construction band that is made of aluminium and copper layer, the width of composite construction band is 2mm～62mm, thickness is 0.1mm～0.25mm, wherein aluminium is core, the copper layer is coated on the outer surface of aluminium, the thickness of aluminium accounts for 50%～80% of composite construction tape thickness, and the contact rate of copper layer and aluminium is greater than 99%.
The conflux preparation method of welding carries out above-mentioned composite solar photovoltaic according to the following steps: with width is that 1mm～60mm, thickness are that the aluminium sheet of 0.10mm～0.25mm is as sandwich layer, it is the copper coin of 0.03mm～0.07mm that outer surface coats thickness, join in the calender rollingly, obtain the composite solar photovoltaic welding that confluxes.
The modulus of elasticity and the thermal coefficient of expansion of material therefor depended in the thermal stress of photovoltaic conduction band and strain, is linear relationship basically.The present invention breaks through with manufacturability and prepares rigidly adhering to of soft attitude copper solution thermal stress, on conduction band material and structure, explore, the present invention adopts the laminboard layer composite construction of copper cover aluminum, or the sandwich structure of the parallel multilayer of employing copper-clad aluminium lamination, stress when introducing the application of metallic aluminium intermediate layer realization conduction band product in conduction band reduces, product quality is alleviated,, be coated with for convenience and hang solder and improve its conductivity by copper is placed skin.Because aluminium is the key of conduction band relieve stresses, it can exceed about 30% by the unidimensional fine copper conduction band of force rate.The compound conduction band of copper aluminium of bag core of the present invention or sandwich structure is calculated by two-dimentional thermal stress and can many relief of thermal stress 12%～25%, quality than fine copper and reduce 35%～55%.Compound conduction band of the present invention can just can be made the conduction band that has copper cover aluminum or parallel multi-layer compound structure and meet product specification by simple and mechanical processing, need not too much energy consumption process.The fine copper part also will be coated with the extension solder as direct current-carrying part and directly be connected with solar element, the aluminium part is as good conductor, because it is than copper superior flexibility, can alleviate the stress that thermal cycle produces better than copper, prolong the useful life of conduction band significantly.Simultaneously, aluminium has the density more much lower than copper, is with under the situation of specification confluxing equally, and the conduction band quality that contains aluminium is significantly reduced.Aluminium is not only good conductor, and its price only is again 1/3rd of a copper, and the band that confluxes that this method is made just provides the scale effect of producing in enormous quantities simultaneously.
Composite solar photovoltaic of the present invention confluxes and directly is connected with solar element after welding is coated with the extension solder, uses as solar components.
Description of drawings
Fig. 1 is the conflux structural representation of cross section of welding of the composite solar photovoltaic of embodiment one, and 1 is the first bronze medal layer among the figure, and 2 is aluminium lamination, and 3 is the second bronze medal layer; Fig. 2 is the conflux structural representation of cross section of welding of the composite solar photovoltaic of embodiment 12, and 4 is the copper layer among the figure, and 5 is aluminium.
Embodiment
Embodiment one: the composite solar photovoltaic of (please refer to accompanying drawing 1) present embodiment welding that confluxes is the parallel three-layer composite structure band that is made of the first bronze medal layer 1, aluminium lamination 2 and the second bronze medal layer 3, the width of composite construction band is 2mm～62mm, thickness is 0.1mm～0.25mm, in the middle of wherein aluminium lamination 2 is positioned at, the first bronze medal layer 1 and the second bronze medal layer 3 lay respectively at the upper and lower both sides of aluminium lamination 2, the thickness of aluminium lamination 2 accounts for 50%～80% of composite construction tape thickness, the contact rate of the first bronze medal layer 1 and aluminium lamination 2 greater than the contact rate of 99%, the second bronze medal layer 3 and aluminium lamination 2 greater than 99%.
Present embodiment breaks through with manufacturability and prepares rigidly adhering to of soft attitude copper solution thermal stress, on conduction band material and structure, explore, present embodiment adopts the sandwich structure of the parallel multilayer of copper-clad aluminium lamination, stress when introducing the application of metallic aluminium intermediate layer realization conduction band product in conduction band reduces, product quality is alleviated, by copper is placed skin, be coated with for convenience and hang solder and improve its conductivity.Because aluminium is the key of conduction band relieve stresses, it can exceed about 30% by the unidimensional fine copper conduction band of force rate.The compound conduction band of copper aluminium of the sandwich structure of present embodiment is calculated by two-dimentional thermal stress and can many relief of thermal stress 12%～25%, quality than fine copper and reduce 35%～55%.The compound conduction band of present embodiment can just can be made the conduction band that has parallel multi-layer compound structure and meet product specification by simple and mechanical processing, need not too much energy consumption process.The fine copper part also will be coated with the extension solder as direct current-carrying part and directly be connected with solar element, the aluminium part is as good conductor, because it is than copper superior flexibility, can alleviate the stress that thermal cycle produces better than copper, prolong the useful life of conduction band significantly.Simultaneously, aluminium has the density more much lower than copper, is with under the situation of specification confluxing equally, and the conduction band quality that contains aluminium is significantly reduced.Aluminium is not only good conductor, and its price only is again 1/3rd of a copper, and the band that confluxes that this method is made just provides the scale effect of producing in enormous quantities simultaneously.
Embodiment two: present embodiment and embodiment one are different is that the width of composite construction band is 5mm～58mm, and thickness is 0.15mm～0.20mm.Other is identical with embodiment one.
Embodiment three: present embodiment and embodiment one are different is that the width of composite construction band is 30mm, and thickness is 0.18mm.Other is identical with embodiment one.
Embodiment four: present embodiment is different with one of embodiment one to three is that the thickness of aluminium lamination accounts for 55%～75% of composite construction tape thickness.Other is identical with one of embodiment one to three.
Embodiment five: present embodiment is different with one of embodiment one to three is that the thickness of aluminium lamination accounts for 65% of composite construction tape thickness.Other is identical with one of embodiment one to three.
Embodiment six: the conflux preparation method of welding carries out embodiment one described composite solar photovoltaic according to the following steps: with thickness is that the aluminium sheet of 0.10mm～0.25mm is as the intermediate layer, upper and lower cladding thickness is the copper coin of 0.03mm～0.07mm, join in the calender rolling, obtain composite board, cut into the tape that width is 2mm～62mm then, obtain the composite solar photovoltaic welding that confluxes.
Present embodiment adopts the sandwich structure of the parallel multilayer of copper-clad aluminium lamination, stress when introducing the application of metallic aluminium intermediate layer realization conduction band product in conduction band reduces, product quality is alleviated,, be coated with for convenience and hang solder and improve its conductivity by copper is placed skin.Because aluminium is the key of conduction band relieve stresses, it can exceed about 30% by the unidimensional fine copper conduction band of force rate.The compound conduction band of copper aluminium of the sandwich structure of present embodiment is calculated by two-dimentional thermal stress and can many relief of thermal stress 12%～25%, quality than fine copper and reduce 35%～55%.The compound conduction band of present embodiment can just can be made the conduction band that has parallel multi-layer compound structure and meet product specification by simple and mechanical processing, need not too much energy consumption process.The fine copper part also will be coated with the extension solder as direct current-carrying part and directly be connected with solar element, the aluminium part is as good conductor, because it is than copper superior flexibility, can alleviate the stress that thermal cycle produces better than copper, prolong the useful life of conduction band significantly.Simultaneously, aluminium has the density more much lower than copper, is with under the situation of specification confluxing equally, and the conduction band quality that contains aluminium is significantly reduced.Aluminium is not only good conductor, and its price only is again 1/3rd of a copper, and the band that confluxes that this method is made just provides the scale effect of producing in enormous quantities simultaneously.
Embodiment seven: present embodiment and embodiment six are different is that thickness as the aluminium sheet in intermediate layer is 0.18mm～0.23mm, and the thickness of copper coin is 0.04mm～0.06mm.Other is identical with embodiment six.
Embodiment eight: present embodiment and embodiment six are different is that thickness as the aluminium sheet in intermediate layer is 0.20mm, and the thickness of copper coin is 0.05mm.Other is identical with embodiment six.
Embodiment nine: present embodiment is different with one of embodiment six to eight is that the temperature of calender when rolling is 40 ℃～80 ℃, and roll spacing is 0.1～0.25mm, and the thin-pass number of times is 6～8 times, and roll spacing is constant during thin-pass.Other is identical with one of embodiment six to eight.
Embodiment ten: present embodiment is different with one of embodiment six to eight is that the temperature of calender when rolling is 60 ℃, and roll spacing is 0.2mm, and the thin-pass number of times is 7 times, and roll spacing is constant during thin-pass.Other is identical with one of embodiment six to eight.
Embodiment 11: the conflux preparation method of welding carries out the composite solar photovoltaic of present embodiment according to the following steps: with thickness is that the aluminium sheet of 0.20mm is as the intermediate layer, upper and lower cladding thickness is the 0.07mm copper coin, join in the calender rolling, temperature when rolling is 60 ℃, and roll spacing is 0.2mm, and the thin-pass number of times is 6 times, roll spacing is constant during thin-pass, obtain composite board, cut into the tape that width is 10mm then, obtain the composite solar photovoltaic welding that confluxes.
The composite solar photovoltaic of the present embodiment preparation parallel three-layer composite structure band that welding is made of the first bronze medal layer 1, aluminium lamination 2 and the second bronze medal layer 3 that confluxes, the width of composite construction band is 10mm, thickness is 0.23mm, in the middle of wherein aluminium lamination 2 is positioned at, the first bronze medal layer 1 and the second bronze medal layer 3 lay respectively at the upper and lower both sides of aluminium lamination 2, the thickness of aluminium lamination 2 accounts for 65% of composite construction tape thickness, by ultrasonic examination, the contact rate of the first bronze medal layer 1 and aluminium lamination 2 is that the contact rate of 99.8%, the second bronze medal layer 3 and aluminium lamination 2 is 99.9%.
The composite solar photovoltaic of the present embodiment preparation welding that confluxes is confluxed to be with copper and welded by the double glazing plate holder, be placed on temperature and be in 80 ℃ the incubator, and the alternating current of logical 220V, as thermal cycle, after keeping 24h, find the copper band fracture of confluxing, and the composite solar photovoltaic of the present embodiment preparation welding that confluxes is intact.
The compound conduction band of present embodiment can just can be made the conduction band that has parallel multi-layer compound structure and meet product specification by simple and mechanical processing, need not too much energy consumption process.The fine copper part also will be coated with the extension solder as direct current-carrying part and directly be connected with solar element, the aluminium part is as good conductor, because it is than copper superior flexibility, can alleviate the stress that thermal cycle produces better than copper, prolong the useful life of conduction band significantly.Simultaneously, aluminium has the density more much lower than copper, is with under the situation of specification confluxing equally, and the conduction band quality that contains aluminium is significantly reduced.Aluminium is not only good conductor, and its price only is again 1/3rd of a copper, and the band that confluxes that this method is made just provides the scale effect of producing in enormous quantities simultaneously.
Embodiment 12: the composite solar photovoltaic of (please refer to accompanying drawing 2) present embodiment welding that confluxes is the cladded type composite construction band that is made of aluminium 5 and copper layer 4, the width of composite construction band is 2mm～62mm, thickness is 0.1mm～0.25mm, wherein aluminium 5 is core, copper layer 4 is coated on the outer surface of aluminium 5, the thickness of aluminium 5 accounts for 50%～80% of composite construction tape thickness, and the contact rate of copper layer 4 and aluminium 5 is greater than 99%.
Present embodiment breaks through with manufacturability and prepares rigidly adhering to of soft attitude copper solution thermal stress, on conduction band material and structure, explore, present embodiment adopts the laminboard layer composite construction of copper cover aluminum, stress when introducing the application of metallic aluminium intermediate layer realization conduction band product in conduction band reduces, product quality is alleviated, by copper is placed skin, be coated with for convenience and hang solder and improve its conductivity.Because aluminium is the key of conduction band relieve stresses, it can exceed about 30% by the unidimensional fine copper conduction band of force rate.The compound conduction band of copper aluminium of the bag cored structure of present embodiment is calculated by two-dimentional thermal stress and can many relief of thermal stress 12%～25%, quality than fine copper and reduce 35%～55%.The compound conduction band of present embodiment can just can be made the conduction band that has the copper cover aluminum composite construction and meet product specification by simple and mechanical processing, need not too much energy consumption process.The fine copper part also will be coated with the extension solder as direct current-carrying part and directly be connected with solar element, the aluminium part is as good conductor, because it is than copper superior flexibility, can alleviate the stress that thermal cycle produces better than copper, prolong the useful life of conduction band significantly.Simultaneously, aluminium has the density more much lower than copper, is with under the situation of specification confluxing equally, and the conduction band quality that contains aluminium is significantly reduced.Aluminium is not only good conductor, and its price only is again 1/3rd of a copper, and the band that confluxes that this method is made just provides the scale effect of producing in enormous quantities simultaneously.
Embodiment 13: present embodiment and embodiment 12 are different is that the width of composite construction band is 10mm～55mm, and thickness is 0.15mm～0.20mm.Other are identical with embodiment 12.
Embodiment 14: present embodiment and embodiment 12 are different is that the width of composite construction band is 35mm, and thickness is 0.18mm.Other are identical with embodiment 12.
Embodiment 15: present embodiment is different with one of embodiment 12 to 14 is that the thickness of aluminium 5 accounts for 55%～75% of composite construction tape thickness.Other are identical with one of embodiment 12 to 14.
Embodiment 16: present embodiment is different with one of embodiment 12 to 14 is that the thickness of aluminium 5 accounts for 65% of composite construction tape thickness.Other are identical with one of embodiment 12 to 14.
Embodiment 17: the conflux preparation method of welding carries out embodiment 12 described composite solar photovoltaics according to the following steps: with width is that 1mm～60mm, thickness are that the aluminium sheet of 0.10mm～0.25mm is as sandwich layer, it is the copper coin of 0.03mm～0.07mm that outer surface coats thickness, join in the calender rollingly, obtain the composite solar photovoltaic welding that confluxes.
Present embodiment adopts the laminboard layer composite construction of copper cover aluminum, stress when introducing the application of metallic aluminium intermediate layer realization conduction band product in conduction band reduces, product quality is alleviated,, be coated with for convenience and hang solder and improve its conductivity by copper is placed skin.Because aluminium is the key of conduction band relieve stresses, it can exceed about 30% by the unidimensional fine copper conduction band of force rate.The compound conduction band of bag core of present embodiment is calculated by two-dimentional thermal stress and can many relief of thermal stress 12%～25%, quality than fine copper and reduce 35%～55%.The compound conduction band of present embodiment can just can be made the conduction band that has the copper cover aluminum composite construction and meet product specification by simple and mechanical processing, need not too much energy consumption process.The fine copper part also will be coated with the extension solder as direct current-carrying part and directly be connected with solar element, the aluminium part is as good conductor, because it is than copper superior flexibility, can alleviate the stress that thermal cycle produces better than copper, prolong the useful life of conduction band significantly.Simultaneously, aluminium has the density more much lower than copper, is with under the situation of specification confluxing equally, and the conduction band quality that contains aluminium is significantly reduced.Aluminium is not only good conductor, and its price only is again 1/3rd of a copper, and the band that confluxes that this method is made just provides the scale effect of producing in enormous quantities simultaneously.
Embodiment 18: present embodiment and embodiment 17 are different is that thickness as the aluminium sheet in intermediate layer is 0.18mm～0.23mm, and the thickness of copper coin is 0.04mm～0.06mm.Other is identical with embodiment 17.
Embodiment 19: present embodiment and embodiment 17 are different is that thickness as the aluminium sheet in intermediate layer is 0.20mm, and the thickness of copper coin is 0.05mm.Other is identical with embodiment 17.
Embodiment 20: present embodiment is different with one of embodiment 17 to 19 is that the temperature of calender when rolling is 40 ℃～80 ℃, and roll spacing is 0.1～0.25mm, and the thin-pass number of times is 6～8 times, and roll spacing is constant during thin-pass.Other is identical with one of embodiment 17 to 19.
Embodiment 21: present embodiment is different with one of embodiment 17 to 19 is that the temperature of calender when rolling is 60 ℃, and roll spacing is 0.2mm, and the thin-pass number of times is 7 times, and roll spacing is constant during thin-pass.。Other is identical with one of embodiment 17 to 19.
Embodiment 22: the conflux preparation method of welding carries out the composite solar photovoltaic of present embodiment according to the following steps: with width is that 10mm, thickness are that the aluminium sheet of 0.20mm is as sandwich layer, it is the copper coin of 0.05mm that outer surface coats thickness, join in the calender rolling, temperature when rolling is 60 ℃, roll spacing is 0.2mm, the thin-pass number of times is 6 times, during thin-pass roll spacing constant, obtain the composite solar photovoltaic welding that confluxes.
The composite solar photovoltaic of the present embodiment welding that confluxes is the cladded type composite construction band that is made of aluminium 5 and copper layer 4, the width of composite construction band is 12mm, thickness is 0.22mm, wherein aluminium 5 is core, copper layer 4 is coated on the outer surface of aluminium 5, the thickness of aluminium 5 accounts for 70% of composite construction tape thickness, and by ultrasonic examination, copper layer 4 is 99.9% with the contact rate of aluminium 5.
The composite solar photovoltaic of the present embodiment preparation welding that confluxes is confluxed to be with copper and welded by the double glazing plate holder, be placed on temperature and be in 80 ℃ the incubator, and the alternating current of logical 220V, as thermal cycle, after keeping 24h, find the copper band fracture of confluxing, and the composite solar photovoltaic of the present embodiment preparation welding that confluxes is intact.
The compound conduction band of present embodiment can just can be made the conduction band that has the cladded type composite construction and meet product specification by simple and mechanical processing, need not too much energy consumption process.The fine copper part also will be coated with the extension solder as direct current-carrying part and directly be connected with solar element, the aluminium part is as good conductor, because it is than copper superior flexibility, can alleviate the stress that thermal cycle produces better than copper, prolong the useful life of conduction band significantly.Simultaneously, aluminium has the density more much lower than copper, is with under the situation of specification confluxing equally, and the conduction band quality that contains aluminium is significantly reduced.Aluminium is not only good conductor, and its price only is again 1/3rd of a copper, and the band that confluxes that this method is made just provides the scale effect of producing in enormous quantities simultaneously.
Claims (10)
1. the composite solar photovoltaic welding that confluxes, it is characterized in that the composite solar photovoltaic welding that confluxes is by the first bronze medal layer (1), the parallel three-layer composite structure band of aluminium lamination (2) and the second bronze medal layer (3) formation, the width of composite construction band is 2mm～62mm, thickness is 0.1mm～0.25mm, in the middle of wherein aluminium lamination (2) is positioned at, the first bronze medal layer (1) and the second bronze medal layer (3) lay respectively at aluminium lamination (2) on, following both sides, the thickness of aluminium lamination (2) accounts for 50%～80% of composite construction tape thickness, the contact rate of the first bronze medal layer (1) and aluminium lamination (2) greater than the contact rate of 99%, the second bronze medal layer (3) and aluminium lamination (2) greater than 99%.
2. the composite solar photovoltaic according to claim 1 welding that confluxes, the width that it is characterized in that the composite construction band is 5mm～58mm, thickness is 0.15mm～0.20mm.
3. the composite solar photovoltaic according to claim 1 and 2 welding that confluxes is characterized in that the thickness of aluminium lamination (2) accounts for 55%～75% of composite construction tape thickness.
4. the conflux preparation method of welding of composite solar photovoltaic as claimed in claim 1, it is characterized in that the conflux preparation method of welding of composite solar photovoltaic carries out according to the following steps: with thickness is that the aluminium sheet of 0.10mm～0.25mm is as the intermediate layer, upper and lower cladding thickness is the copper coin of 0.03mm～0.07mm, join in the calender rolling, obtain composite board, cut into the tape that width is 2mm～62mm then, obtain the composite solar photovoltaic welding that confluxes.
5. the conflux preparation method of welding of composite solar photovoltaic according to claim 4 is characterized in that the thickness as the aluminium sheet in intermediate layer is 0.18mm～0.23mm, and the thickness of copper coin is 0.04mm～0.06mm.
6. the conflux preparation method of welding of composite solar photovoltaic according to claim 4 is characterized in that the temperature when calender is rolling is 40 ℃～80 ℃, and roll spacing is 0.1～0.25mm, and the thin-pass number of times is 6～8 times, and roll spacing is constant during thin-pass.
7. the composite solar photovoltaic welding that confluxes, it is characterized in that the composite solar photovoltaic welding that confluxes is the cladded type composite construction band that is made of aluminium (5) and copper layer (4), the width of composite construction band is 2mm～62mm, thickness is 0.1mm～0.25mm, wherein aluminium (5) is core, copper layer (4) is coated on the outer surface of aluminium (5), and the thickness of aluminium (5) accounts for 50%～80% of composite construction tape thickness, and the contact rate of copper layer (4) and aluminium (5) is greater than 99%.
8. the composite solar photovoltaic according to claim 7 welding that confluxes, the width that it is characterized in that the composite construction band is 10mm～55mm, thickness is 0.15mm～0.20mm.
9. the conflux preparation method of welding of composite solar photovoltaic as claimed in claim 7, it is characterized in that the conflux preparation method of welding of composite solar photovoltaic carries out according to the following steps: with width is that 1mm～60mm, thickness are that the aluminium sheet of 0.10mm～0.25mm is as sandwich layer, it is the copper coin of 0.03mm～0.07mm that outer surface coats thickness, join in the calender rollingly, obtain the composite solar photovoltaic welding that confluxes.
10. the conflux preparation method of welding of composite solar photovoltaic according to claim 9 is characterized in that the temperature when calender is rolling is 40 ℃～80 ℃, and roll spacing is 0.1～0.25mm, and the thin-pass number of times is 6～8 times, and roll spacing is constant during thin-pass.
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| CN106782746A (en) * | 2016-12-30 | 2017-05-31 | 河海大学 | A kind of photovoltaic junction box copper-clad aluminium conductive plate and its finish rolling complex method |
| CN106935673A (en) * | 2017-04-11 | 2017-07-07 | 江苏东昇光伏科技有限公司 | A kind of photovoltaic module welding |
| CN109728118A (en) * | 2019-02-28 | 2019-05-07 | 同享（苏州）电子材料科技股份有限公司 | A kind of low current welding and preparation method thereof |
| JP2020140951A (en) * | 2019-02-27 | 2020-09-03 | エイエフダブリュー カンパニー リミテッド | Busbar manufacturing method for fuse |
| CN114714701A (en) * | 2022-04-13 | 2022-07-08 | 连云港中彩科技有限公司 | Cold-rolled copper-aluminum composite plate strip and preparation method thereof |
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| CN106782746A (en) * | 2016-12-30 | 2017-05-31 | 河海大学 | A kind of photovoltaic junction box copper-clad aluminium conductive plate and its finish rolling complex method |
| CN106935673A (en) * | 2017-04-11 | 2017-07-07 | 江苏东昇光伏科技有限公司 | A kind of photovoltaic module welding |
| JP2020140951A (en) * | 2019-02-27 | 2020-09-03 | エイエフダブリュー カンパニー リミテッド | Busbar manufacturing method for fuse |
| CN109728118A (en) * | 2019-02-28 | 2019-05-07 | 同享（苏州）电子材料科技股份有限公司 | A kind of low current welding and preparation method thereof |
| CN114714701A (en) * | 2022-04-13 | 2022-07-08 | 连云港中彩科技有限公司 | Cold-rolled copper-aluminum composite plate strip and preparation method thereof |
| CN114714701B (en) * | 2022-04-13 | 2022-12-23 | 连云港中彩科技有限公司 | Cold-rolled copper-aluminum composite plate strip and preparation method thereof |
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