Battery string production method and equipment

Abstract

The invention discloses a battery string production method, which comprises the following steps of: arranging N battery pieces and N back diaphragms at intervals to form N laying units, and laying a welding strip group and a front diaphragm on the laying units, wherein the front diaphragm to be positioned at the top part of the welding strip group; fixedly connecting the welding strip group, the front diaphragm and the laying units into a whole to form battery units; connecting n battery units in series to obtain battery string segments, connecting the battery string segments in series to form a long string, and cutting the long string at cut-off gaps thereof to obtain battery strings. The invention further provides battery string production equipment, which comprises a film making unit, a battery piece supply unit and a solder strip preparation unit, wherein the film making unit, the battery piece supply unit and the solder strip preparation unit can be used for preparing battery pieces, front membranes, back membranes and solder strip groups, the manipulator unit can be used for laying a plurality of solder strip groups and front membranes, meanwhile, a first curing unit works to obtain the battery units, and a transfer unit conveys the multiple groups of battery units to a connecting platform to be connected in series.

Description

technical field [0001] The present invention relates to the technical field of solar cells, in particular to a method and equipment for producing a battery string. Background technique [0002] PERC+ cells (emitter and back passivation cells), TOPCon (tunneling oxide passivation contact technology) cells, heterojunctions, perovskites, stacks, solar cell technology is developing rapidly, and efficiency continues to improve. At the same time, photovoltaic module packaging technology and packaging materials also need to continue to improve in order to match the technical needs of different cells. Heterojunction cells have a series of advantages such as high conversion efficiency, simple manufacturing process, thin silicon wafer application, low temperature coefficient, no light-induced attenuation and potential attenuation, and bifacial power generation. However, the production of photovoltaic modules by heterojunction cells faces a series of technical challenges, especially t...

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Problems solved by technology

[0003] At present, it is generally used to use an independent machine to combine the film and the ribbon into a roll-shaped conductor plate, and then use the conductor plate to connect the battery pieces on the stringer to produce battery strings. The roll-shaped conductor plate that has been made is only It can adapt to the production of cells of one specification, or a single type of battery string unit, but cannot adapt to the adjustment of the spacing between battery strings and string spacing; in addition, the existing solutions are based on the production of a single cell as a string. The battery strings are produced continuously in the welding cycle, and the production capacity of the production method of the battery strings in the prior art is very low

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