Copper foil type solar cell photovoltaic solder strip

Abstract

The utility model discloses a copper foil type solar cell photovoltaic solder strip, and belongs to the technical field of solar cell photovoltaic solder strips. The copper foil type solar cell photovoltaic solder strip comprises a cell photovoltaic panel body, the surface of the cell photovoltaic panel body is provided with a flat strip body, the interior of the flat strip body is provided with a conductive wire, the surface of the conductive wire is provided with a copper foil strip, the surface of the copper foil strip is coated with a tin-coated layer, and the surface of the tin-coated layer is provided with an anti-oxidation layer. According to the copper foil type solar cell photovoltaic solder strip, the anti-oxidation layer is arranged on the surface of the tin-coated layer, the anti-oxidation layer is made of the modified nylon material, the surface of the tin-coated layer is uniformly coated with the anti-oxidation layer, and the modified nylon material has the advantages of light weight, high ductility and electrical insulation performance, so that the tin-coated layer is effectively prevented from reacting with moisture in air; the performance of the tin-coated layer is ensured, the flexibility and tensile strength of the solder strip are maintained, and the service life of the photovoltaic solder strip is further prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic welding strips for solar cells, and more specifically to a copper foil type photovoltaic welding strip for solar cells. Background Art

[0002] Photovoltaic ribbon, also known as solar cell ribbon, is a key material used in the production of solar cell modules. It has excellent electrical conductivity, anti-oxidation and welding properties, and is the connecting bridge between cells in solar cell modules. Photovoltaic ribbon is usually made of copper foil as the main material.

[0003] Chinese patent application number CN201420834975.X discloses a copper foil spirally wrapped solar cell photovoltaic welding ribbon, comprising a longitudinally extending flat ribbon body, the ribbon body comprising a conductive wire and a copper foil ribbon, the copper foil ribbon is spirally wrapped around the conductive wire, and the surface of the copper foil ribbon is coated with a tin coating layer;

[0004] The above technical solution brings multiple advantages. The copper foil wrapped around the conductive wire can increase the flexibility of the tape and reduce the thermal stress of the welding part. Due to the improvement of the conversion efficiency of the solar panel, especially in the hot summer, the current passing through the inside of the welding tape is getting larger and larger, the welding tape will generate heat, and the battery cell will be subjected to greater heat. Since the solar panel is outdoors for a long time, the tin coating is exposed to the air surface, and the air contains moisture, the welding tape will also generate a lot of heat. The tin coating will react with the moisture in the air for a long time, and cracks or spots will appear on the surface of the tin coating, which will not only cause the performance of the tin coating to deteriorate, but also reduce the flexibility and tensile strength of the welding tape, thereby shortening the service life of the photovoltaic welding tape. Utility Model Content

[0005] The purpose of the utility model is to provide a copper foil type solar cell photovoltaic welding strip to solve the problems raised in the above background technology:

[0006] When solar panels are outdoors for a long time, the tin coating is exposed to the air surface. The air contains moisture, and the soldering tape will generate a lot of heat. The tin coating will react with the moisture in the air for a long time, and cracks or spots will appear on the surface of the tin coating, which will not only cause the performance of the tin coating to degrade, but also reduce the flexibility and tensile strength of the soldering tape, thereby shortening the service life of the photovoltaic soldering tape.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A copper foil type solar cell photovoltaic welding strip comprises a solar cell photovoltaic panel body, a flat strip body is arranged on the surface of the solar cell photovoltaic panel body, a conductive wire is arranged inside the flat strip body, a copper foil strip is arranged on the surface of the conductive wire, a tin coating layer is coated on the surface of the copper foil strip, and an anti-oxidation layer is arranged on the surface of the tin coating layer.

[0009] By adopting the above technical scheme, an anti-oxidation layer is provided on the surface of the tin-coated layer. The anti-oxidation layer is made of modified nylon material. The anti-oxidation layer is evenly coated on the surface of the tin-coated layer. The modified nylon material has light weight, high ductility, and electrical insulation properties. It effectively prevents the tin-coated layer from reacting with moisture in the air, which not only ensures the performance of the tin-coated layer, but also maintains the flexibility and tensile strength of the welding strip, thereby extending the service life of the photovoltaic welding strip.

[0010] Preferably, the copper foil tape is spirally wound on the surface of the conductive wire.

[0011] Preferably, the conductive wire is formed by conductive threads arranged in parallel or twisted.

[0012] Preferably, the thickness of the copper foil tape is 20 micrometers to 350 micrometers, and the thickness of the tin coating layer is 10 micrometers to 50 micrometers.

[0013] Preferably, the anti-oxidation layer is evenly coated on the surface of the tin coating layer.

[0014] By adopting the above technical solution, the reaction between the tin coating layer and moisture in the air can be prevented.

[0015] Preferably, the anti-oxidation layer is made of modified nylon material.

[0016] By adopting the above technical solution, the modified nylon material has light weight, high ductility, and electrical insulation properties, which effectively prevents the tin coating layer from reacting with moisture in the air. It not only ensures the performance of the tin coating layer, but also maintains the flexibility and tensile strength of the welding strip, thereby extending the service life of the photovoltaic welding strip.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1) When the copper foil solar cell photovoltaic welding strip is in use, an anti-oxidation layer is provided on the surface of the tin-coated layer. The anti-oxidation layer is made of modified nylon material. The anti-oxidation layer is evenly coated on the surface of the tin-coated layer. The modified nylon material has light weight, high ductility, and electrical insulation performance, which effectively prevents the tin-coated layer from reacting with moisture in the air, which not only ensures the performance of the tin-coated layer, but also maintains the flexibility and tensile strength of the welding strip, thereby extending the service life of the photovoltaic welding strip.

[0019] 2) The anti-oxidation layer is made of modified nylon material, which has light weight, high ductility and electrical insulation properties, ensuring the ductility and flexibility of the photovoltaic welding ribbon. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the flat belt structure of the utility model.

[0022] Explanation of the numbers in the figure: 1. Solar cell photovoltaic panel body; 2. Flat belt body; 3. Conductive wire; 4. Copper foil belt; 5. Tin coating layer; 6. Anti-oxidation layer. DETAILED DESCRIPTION

[0023] Example 1

[0024] When solar panels are outdoors for a long time, the tin coating is exposed to the air surface. The air contains moisture, and the soldering tape will generate a lot of heat. The tin coating will react with the moisture in the air for a long time, and cracks or spots will appear on the surface of the tin coating. This will not only cause the performance of the tin coating to degrade, but also reduce the flexibility and tensile strength of the soldering tape, thereby shortening the service life of the photovoltaic soldering tape. The following solution can be used to solve this problem.

[0025] See also Figure 1 to Figure 2 A copper foil type solar cell photovoltaic welding strip comprises a battery photovoltaic panel body 1, a flat strip body 2 is arranged on the surface of the battery photovoltaic panel body 1, a conductive wire 3 is arranged inside the flat strip body 2, a copper foil strip 4 is arranged on the surface of the conductive wire 3, a tin coating layer 5 is coated on the surface of the copper foil strip 4, an anti-oxidation layer 6 is arranged on the surface of the tin coating layer 5, an anti-oxidation layer 6 is arranged on the surface of the tin coating layer 5, and the anti-oxidation layer 6 is made of modified nylon material. The anti-oxidation layer 6 is evenly coated on the surface of the tin coating layer 5. The modified nylon material has light weight, high ductility, and electrical insulation performance, which effectively prevents the tin coating layer 5 from reacting with moisture in the air, not only ensuring the performance of the tin coating layer 5, but also maintaining the flexibility and tensile strength of the welding strip, thereby extending the service life of the photovoltaic welding strip.

[0026] The copper foil tape 4 is spirally wound on the surface of the conductive wire 3 .

[0027] The conductive wires 3 are formed by conductive threads arranged in parallel or twisted.

[0028] The thickness of the copper foil tape 4 is 20 micrometers to 350 micrometers, and the thickness of the tin coating layer 5 is 10 micrometers to 50 micrometers.

[0029] The anti-oxidation layer 6 is evenly coated on the surface of the tin coating layer 5 to prevent the tin coating layer 5 from reacting with moisture in the air.

[0030] The anti-oxidation layer 6 is made of modified nylon material, which has light weight, high ductility and electrical insulation properties. It effectively prevents the tin coating layer 5 from reacting with moisture in the air, not only ensuring the performance of the tin coating layer 5, but also maintaining the flexibility and tensile strength of the welding strip, thereby extending the service life of the photovoltaic welding strip.

[0031] Usage steps of the utility model: When the copper foil type solar cell photovoltaic welding strip is in use, in order to prevent the tin coating layer 5 from reacting with moisture in the air, an antioxidant layer 6 is provided on the surface of the tin coating layer 5. The antioxidant layer 6 is made of modified nylon material. The antioxidant layer 6 is evenly coated on the surface of the tin coating layer 5. The modified nylon material has light weight, high ductility, and electrical insulation performance, which effectively prevents the tin coating layer 5 from reacting with moisture in the air, which not only ensures the performance of the tin coating layer 5, but also maintains the flexibility and tensile strength of the welding strip, thereby extending the service life of the photovoltaic welding strip.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A copper foil solar cell photovoltaic ribbon, comprising a photovoltaic panel body (1), characterized in that: The surface of the photovoltaic panel body (1) is provided with a flat belt (2), the interior of the flat belt (2) is provided with a conductive wire (3), the surface of the conductive wire (3) is provided with a copper foil belt (4), the surface of the copper foil belt (4) is coated with a tin coating layer (5), and the surface of the tin coating layer (5) is provided with an anti-oxidation layer (6); The copper foil tape (4) is spirally wound on the surface of the conductive wire (3); The conductive wire (3) is formed by conductive wires arranged in parallel or twisted; The copper foil strip (4) has a thickness of 20 micrometers to 350 micrometers, and the tin coating layer (5) has a thickness of 10 micrometers to 50 micrometers.

2. A copper foil solar cell photovoltaic ribbon according to claim 1, characterized in that: The anti-oxidation layer (6) is evenly coated on the surface of the tin coating layer (5).

3. A copper foil solar cell photovoltaic welding ribbon according to claim 1, characterized in that: The anti-oxidation layer (6) is made of modified nylon material.

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