Photovoltaic assembly based on IBC battery packaging and manufacturing method

Abstract

The invention discloses a photovoltaic assembly based on IBC battery packaging and a manufacturing method; the photovoltaic assembly comprises a toughened glass layer, the first packaging material layer, an IBC battery sheet layer and the second packaging material layer stacked in sequence, and a conductive glue and a conductive backboard layer; the method comprises the following steps: selectingone toughened glass sheet, paving the first packaging material layer on the toughened glass, placing a plurality of IBC battery sheets in order, thus forming the IBC battery sheet layer; opening rectangular holes, corresponding to the battery edge electrodes, on the second packaging material layer; the battery edge negative and positive electrodes corresponding to the rectangular holes are printedwith conductive glues; the rectangular holes and electrode printing conductive glues are matched one by one, thus forming excellent contacts with the conductive backboard layer; the method also comprises the steps of paving the second packaging material layer on the plurality of battery sheets, and paving the conductive backboard on the second packaging material layer, thus forming the assembly.The photovoltaic assembly and making method can effectively solve the welding strip stress, are high in assembly power, and reliable.

Description

technical field [0001] The invention relates to a photovoltaic component based on an IBC (Interdigitated back contact) battery and a manufacturing method thereof, and belongs to the application field of solar cell components. Background technique [0002] At present, the photovoltaic market is booming, new technologies are constantly innovating, and the pursuit of high efficiency is the main goal of technological progress in the industry. Various technologies promoted for high efficiency, such as PERC, diamond wire, and black silicon, have been mass-produced one after another. However, the common features of these technologies The point is that the electrodes are located on the front and back of the battery respectively, and the resulting welding stress and attenuation problems are difficult to solve. In order to avoid this technical problem, the IBC battery is a good technical way to integrate the positive and negative electrodes on the back of the battery, but this kind of...

AI Technical Summary

Problems solved by technology

[0002] At present, the photovoltaic market is prosperous, new technologies are constantly innovating, and the pursuit of high efficiency is the main goal of technological progress in the industry. Various technologies that promote high efficiency, such as PERC, diamond wire, and black silicon, have been mass-produced, but the commonality of these technologies The point is that the electrodes are located on the front and back of the battery, and the resulting welding stress and attenuation problems are difficult to solve

In order to avoid this technical problem, the IBC battery is a good technical way to integrate the positive and negative electrodes on the back of the battery, but this kind of battery cannot use H-type welding, and the reliability of single-sided welding is low, and the fragmentation rate is very high. The stress not only does not decrease, but increases significantly. This invention introduces a photovoltaic module based on IBC cells and its manufacturing method, which can effectively solve the stress of the welding strip. At the same time, the module has high power, low attenuation, and reliability can also be guaranteed

Images