Photovoltaic panel busbar welding method

Can busbar-free solar cells be interconnected by multiple wires?

The interconnection of busbar-free solar cells by multiple wires is a simple and evolutionary concept to lower the cost of PV modules by reducing silver consumption for the front side metallization and to increase the module efficiency by lower series resistance and improved light harvesting.

Why is multi-busbar technology important for photovoltaic cells & modules?

With the multi-busbar design, module performance can be increased because of the reduction in the total series resistance of the interconnected cell strings and also because of improved light utilization owing to the round wires. There are four key advantages to using MBB technology for photovoltaic cells and modules:

How welding strip affect the power of photovoltaic module?

The quality of welding strip will directly affect the current collection efficiency of photovoltaic module, so it has a great impact on the power of photovoltaic module. The so-called photovoltaic welding strip is to coat binary or ternary low-melting alloy on the surface of copper strip with given specification.

Does heterogeneous welding strip affect PV Assembly power improvement?

The welding strip is an important part of photovoltaic module. The current of the cell is collected by welding on the main grid of the cell. Therefore, this paper mainly studies the influence of different surface structure of heterogeneous welding strip on PV assembly power improvement. The main findings are as follows:

How to reduce the shading area of a photovoltaic welding strip?

The shading area of the photovoltaic welding strip is reduced by reducing the width of the main grid line and the PV welding strip, and the total amount of light received by the solar cell is increased. However, the contact resistance of the whole PV assembly is too large, which increases the electrical loss of the photovoltaic module.

Does infrared soldering improve the performance of multi busbar cells?

A 0.33 % absolute higher performance of MBB against the established H-pattern solar cell has already been demonstrated by Braun . This work focuses on the interconnection of Multi Busbar cells (MBB) by infrared soldering and the optimization of the front metallization design in order to achieve reliable solder joints.