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Surface irregular high-power tin-plate copper strip of photovoltaic subassembly and manufacture method of surface irregular high-power tin-plate copper strip

A technology of tin-coated copper tape and photovoltaic modules, applied in photovoltaic power generation, cable/conductor manufacturing, electrical components, etc., can solve the problem of low heat-to-electricity conversion efficiency of solar photovoltaic modules, affecting the power of photovoltaic solar modules, poor heating effect, etc. problems, to achieve the effect of improving the photoelectric conversion efficiency, increasing the heating area, and improving the welding performance

Active Publication Date: 2012-10-17
SUZHOU YOURBEST NEW TYPE MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. During welding, due to the smooth contact surface between the traditional tin-coated solder strip and the battery sheet, and the contact surface is small, the welding is not strong
[0004] 2. The surface of traditional tin-coated ribbon is smooth and easy to reflect sunlight back into the air, which affects the power of the entire photovoltaic solar module
[0005] 3. When traditional tin-coated solder strips are used in combination with photothermal-voltaic cells, the self-heating effect is poor due to the small surface area, which indirectly leads to low heat-to-electricity conversion efficiency of the entire solar photovoltaic module

Method used

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  • Surface irregular high-power tin-plate copper strip of photovoltaic subassembly and manufacture method of surface irregular high-power tin-plate copper strip
  • Surface irregular high-power tin-plate copper strip of photovoltaic subassembly and manufacture method of surface irregular high-power tin-plate copper strip
  • Surface irregular high-power tin-plate copper strip of photovoltaic subassembly and manufacture method of surface irregular high-power tin-plate copper strip

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] When the required surface profile of the tin-coated copper strip is elliptical, an embossing device is used to carry out surface profile treatment on the high-purity oxygen-free copper strip as a conductor: as Figure 4 Rolling wheels with oval raised patterns are used on the rolling machine as shown, the positions of the two rolling wheels are adjusted according to the desired depth of the pattern, and the high purity of the conductor is maintained under the drive of the motor (11) The oxygen-free copper strip (12) is rolled with a rolling wheel (13) at a speed of 10 m / min to 15 m / min to obtain the required oxygen-free copper strip (14) with elliptical pits on the surface .

[0035] Ultrasonic treatment is carried out to the high-purity oxygen-free copper strip of described surface special-shaped treatment again, and its main purpose is in order to degreasing and deoxidation; The ultrasonic cleaning agent used in the ultrasonic treatment process is organic For the sol...

Embodiment 2

[0039] When the required surface irregular shape of the tin-coated copper strip is square, its processing steps are basically the same as that of the above-mentioned anisotropic pattern being oval, the difference lies in two points:

[0040] 1. Use a roller with a rectangular raised pattern on the roller press.

[0041] 2. In the process of hot-dipping tin, the dipping time is 8S, and the special-shaped high-power tin-coated copper strip with a rectangular pattern on the surface with a thickness of 28-32 microns on one side of the coating is obtained.

Embodiment 3

[0043] When the required surface profile of the tin-coated copper strip is a strip groove, its processing technology differs from that of Example 1 in two places, and the others are the same. These two differences are:

[0044] 1. Use a high-precision slow-moving wire cutting machine, and use imported tungsten steel cutting heads to process the mold into the required wire drawing mold. Such as Figure 5 Pass the high-purity oxygen-free copper strip (12) through the wire drawing die (15) as shown, and draw it at a speed of 4 m / s to 5 m / s through the wire drawing tractor (16) to obtain the required surface strips. Oxygen-free copper strip (17) with grooves.

[0045] 2. In the process of hot-dip tinning, the dipping time is 10 seconds, and a special-shaped high-power tin-coated copper strip with a strip pattern on the surface with a thickness of 36-40 microns on one side of the coating is obtained.

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Abstract

The invention discloses a surface irregular high-power tin-plate cooper strip of a photovoltaic subassembly and a manufacture method of the surface irregular high-power tin-plate copper strip. The tin-plate copper strip comprises an oxygen-free cooper strip which serves as a base material, and a tin-plate layer covered on the external surface of the oxygen-free cooper strip, wherein irregular structures are also uniformly distributed on the positive surface and the negative surface of the oxygen-free cooper strip; and the irregular structures are in regular geometrical shapes in the form of a groove. The stability of the physical performance of a product can be ensured by the irregular structures, simultaneously the irregular structure at the negative surface can enlarge the contact area with a battery piece, and can improve the welding performance while combining with the battery piece; while being used in combination with the common solar battery piece, the irregular structure on the positive surface can reflect more sunshine on the battery piece due to the irregular structure, and therefore, the power of a whole solar photovoltaic subassembly can be improved; while being used in combination of a photothermal-photovolatic battery piece subassembly, the irregular structure on the positive surface can enlarge the heating area due to the enlarged surface area of the irregular structure, besides the reflection of the sunshine is improved, and thus, the power of the whole solar photovoltaic subassembly can be improved to a greater extent.

Description

technical field [0001] The invention relates to a welding strip and a manufacturing method thereof, in particular to a high-power tin-coated copper strip with a heterogeneous structure on the surface suitable for the welding production of solar photovoltaic modules and a manufacturing method thereof. Background technique [0002] At present, the traditional tin-coated soldering strips used in the welding production of photovoltaic modules are all smooth-surfaced structures, which have the following disadvantages: [0003] 1. During welding, due to the smooth contact surface between the traditional tin-coated ribbon and the battery sheet, and the contact surface is small, the welding is not strong. [0004] 2. The surface of traditional tin-coated ribbon is smooth and easy to reflect sunlight back into the air, affecting the power of the entire photovoltaic solar module. [0005] 3. When the traditional tin-coated ribbon is used in combination with solar thermal-voltaic cell...

Claims

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Application Information

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IPC IPC(8): H01B5/02H01B13/00H01L31/05
CPCY02E10/50
Inventor 肖锋孙曹
Owner SUZHOU YOURBEST NEW TYPE MATERIALS
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