3D printing technology-based coloring device and coloring method of photovoltaic piece

Abstract

A 3D printing technology-based coloring device of a photovoltaic piece comprises a transmission assembly line, wherein an identification assembly, a printing assembly and a controller are arranged onthe transmission assembly line, the printing assembly comprises a lifting rack and a sprayer, the lifting rack is arranged on the transmission assembly line, the sprayer is arranged on the lifting rack, the lifting rack comprises a lifting rod and a sliding rod, the lifting rod ascends and descends along a vertical direction, the sliding rod is arranged on the lifting rod, the sprayer is arrangedon the sliding rod in a sliding way, a CCD image sensor is used for shooting the photovoltaic piece on the transmission assembly line, a welding strip on the photovoltaic piece is identified by a processor, a position signal of the welding strip is transferred to the controller, the sprayer is controlled to slide on the sliding rod by the controller so as to spray a pigment onto the welding stripon the photovoltaic piece, a coloring layer is formed on a surface of the welding strip, so that the welding strip on the photovoltaic piece is maintained consistent with color of a battery piece, thewelding requirement of connecting the battery piece to form the photovoltaic piece is greatly reduced, and the production efficiency of the photovoltaic piece with color consistency is improved.

Description

technical field [0001] The invention relates to the field of photovoltaic technology, in particular to a photovoltaic sheet coloring device and coloring method based on 3D printing technology. Background technique [0002] Soldering ribbon is a soldering material used on solar cell modules, which mainly plays the role of connecting and conducting electricity. After the traditional ribbon is applied to the solar cell module, the natural color of the ribbon substrate is inconsistent with the color of the solar cell and the backsheet of the photovoltaic module, which affects the aesthetics of the photovoltaic module. In addition, in the use of solar cell components, in some buildings with high appearance requirements, it is expected that the cells and even the whole component will present a color. [0003] The existing solution to the problem is to coat the surface of the ribbon substrate with a colored layer. However, the existence of the colored layer will have a certain imp...

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Problems solved by technology

[0003] The existing solution to the problem is to coat the surface of the ribbon substrate with a colored layer. However, the existence of the colored layer will have a certain impact on the welding performance, and it is prone to false welding, which affects the photoelectric conversion efficiency of the photovoltaic module.

[0004] The company's previous application for a Chinese patent document with the application number CN201820892525.4 discloses a twistable colored photovoltaic ribbon, including a ribbon base, a metal coating and a colored layer; The metal coating is divided into an upper metal coating, a lower metal coating and a side wall metal coating according to its relative position to the welding ribbon base; only on the upper metal coating and the The metal coating on the side wall is covered with a colored layer; a twisted part is arranged on the base of the welding strip; in the above technical solution, the segmented welding strip with a colored layer interval in the welding strip is realized by twisting, but in the section When the segmented ribbon is connected to the battery, the user needs to place the battery strictly according to the position of the metal coating and the coloring layer. The accuracy of welding is very high, which greatly increases the difficulty of welding. There are improvements in the existing technology

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