Rear ribbon positioning device, component, method, and stringer

Abstract

A back welding strip positioning device comprises a first guiding block, a second guiding block, a first guiding shaft, a second guiding shaft, a first pressing spring and a second pressing spring. The first pressing spring and the second pressing spring are arranged in parallel relatively, and the first pressing spring and the second pressing spring are in one horizontal plane from the perspective of height. When cells are placed on the back welding strip positioning device, the shady faces of the cells contact with the fixed ends of the first welding strip and the second welding strip. The first guiding block and the second guiding block rotate by the pressure action of the cells. The supporting faces of the first cell and the second cell are located at the same height and above the height of the first pressing spring and the second pressing spring. The distance between the fixed end of the first welding strip and the fixed end of the second welding strip equals the width of one welding strip, so that the welding strip is fixed at the location corresponding to the main grid line of the cells accurately. The invention further provides a welding strip positioning device module, a string welding machine and a back welding strip positioning method.

Description

technical field [0001] The invention relates to the technical field of mechanical equipment, in particular to a backside welding ribbon positioning device, assembly and method, and a stringer. Background technique [0002] Cells are used in solar power generation systems, mainly for collecting solar energy and outputting it to storage devices in the form of electrical energy. A single crystal cell generally has an output of about 0.51 volts at no load. To obtain a higher voltage, it is necessary to connect multiple cells in series to meet the user's requirements. Ribbon is a common material used to connect cells, as attached Figure 9 As shown, the power generation efficiency of a crystalline silicon cell is mainly determined by the intensity of sunlight and the effective area of ​​illumination. The intensity of sunlight can be guaranteed according to the region and orientation, while the effective area of ​​illumination depends on the effective utilization of the area on th...

AI Technical Summary

Problems solved by technology

Connecting cells with ribbons includes welding the busbars on the light-receiving surface of the cells to the ribbons, and welding the busbars on the backlight side of the cells to the ribbons. At present, the operation of the fully automatic stringer During the operation, the technology for fixing the position of the cells is mature. Since the light-receiving side of the cells is usually placed upwards during the stringing process, due to factors such as gravity, it is difficult to properly position the cells when welding the back-light side of the cells. The welding ribbon is aligned with the busbar on the backlight surface of the cell, so the welding quality cannot be guaranteed

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