Positioning device and method for welding of solder strip of crystalline silicon cell and series welding machine

Abstract

A positioning device for welding of a solder strip of a crystalline silicon cell comprises a mounting base, a lift mechanism, and a driving mechanism. A groove for positioning a solder strip is formed in the mounting base, such that the solder strip running through the groove directly faces a main gate line on the back of a cell placed on the mounting base up and down. Through holes in spaced distribution are formed in the groove of the mounting base. The lift mechanism runs through the through holes. The driving mechanism drives the lift mechanism to move upwards in the through holes of the mounting base such that a solder strip in the groove of the mounting base is lifted up to come into close contact with a main gate line on the back of a cell placed on the mounting base. According to an embodiment of the present invention, a solder strip for connection with the back of a cell can be aligned with the main gate line on the shady face of the cell well; in addition, the case of rosin joint or failure in welding due to that a cell may not contact with a solder strip due to deformation thereof and the characteristics of a manufacturing process is avoided, and the problem of unstable welding of a solder strip with the main gate line of a cell is solved; and the welding quality of the series welding process for cells is improved. Furthermore, the present invention also provides a series welding machine.

Description

technical field [0001] The invention relates to the technical field of solar cell serial welding equipment, in particular to a crystalline silicon battery ribbon welding positioning device, a positioning method and a stringer. Background technique [0002] With the development of the photovoltaic solar energy industry, the sales price of components has gradually dropped. In order to reduce manufacturing costs and improve the power generation efficiency of components, various component factories have found that the consumption of silver paste of dense grid solar cells is much higher than that in the current market through continuous research and comparison tests. The consumption of silver paste for the three-grid, four-grid and five-grid cells is reduced by 30% to 50%, and because the distance between the main grid lines of dense grid cells is shortened, the auxiliary grid lines are shortened accordingly, which reduces the resistance loss. Moreover, since the round ribbon has...

AI Technical Summary

Problems solved by technology

[0005] 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 process, the technology of fixing the position of the cells has been mature. Since the cells are usually placed with the light-receiving side up and the backlight side down during the stringing production process, due to the diameter error of the circular ribbon manufacturing, its own gravity, and the manufacturing of the battery Due to factors such as cell technology, it is difficult for the solder ribbon under the backlight to be in reliable contact with the busbar on the back of the cell. If the cell is still deformed and warped, it will further affect the contact between the solder ribbon and the busbar on the backlight. Tightness, so the welding quality cannot be guaranteed

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