Revolutionary technologies such as half-cell technology, double glass technology, multi-busbar technology, seamless soldering technology and shingled technology occurred during past years. In particular, the seamless soldering technology and the shingle technology have carried out major reforms in the interconnection technology of solar module encapsulation. All make full use of the cell spacing in the conventional solar module encapsulation. The seamless soldering technology uses an unprecedented double-strip flexible seamless connection technology, which has reached the ultimate utilization of cells and other materials. The shingled technology is more like a kind of overlap technology, in order to use the conventional cell spacing to overlap the cells, but the shingled technology has low compatibility with the existing solar panel encapsulation technology..
1 Seamless Soldering
Seamless soldering technology uses a solder ribbon to achieve ‘tiled’ interconnection of the cells, completely eliminating the typical 2mm gap between cells, and thereby increasing efficiency while reducing the BOM cost of the module. This technology is perfectly compatible with existing module encapsulation processes and equipment. It has high mass production maturity and stability, and capacity is easily scalable. In addition, seamless soldering has good technical compatibility that integrates with M6 monocrystalline silicon wafers, thin silicon wafers, soldering wires and reflective ribbons.
How Seamless Soldering technology works?
Due to the challenges of producing high efficiency and low cost solar modules, manufacturers are constantly seeking new technology and production process which help them to effectively produce high efficiency and output solar modules with competitive prices so as to beat the competition. The Seamless Soldering technology is a new technology that utilizes a solder ribbon to reach a “tiled” interconnection between the cells, thus completely eliminating the standard gap of 2 mm width, accordingly increasing the efficiency of the module while decreasing the material cost of the module.
Benefits of the Seamless Soldering technology
The Seamless Soldering technology is perfectly compatible as well with the existing process of module encapsulation and equipment, so it has a high probability for mass production stability, and the production capacity is simply scalable.
The Seamless Soldering technology has good technical compatibility for integration with the monocrystalline silicon wafers, soldering wire, thin silicon wafers and reflective ribbon.
2 Shingled Technology
It uses a specific pattern of cells and cut the cell along the busbar into 5 or 6 pieces (our company is 5 pieces) by laser scribing. The small pieces of cells are shingled into strings with conductive paste. And each two pieces are bonded and overlapped with conductive （ECA） to form a cell string. The cell string is arranged and laminated to make a module.
The current of the cell in shingled module is 1 / 5 of that of the whole cell after being cut. Therefore, parallel structure is introduced into the shingled module to keep its output performance consistent with that of the standard module.
The advantage of Shingled modules
· Shingled technology change cell connection and design compared to standard modules. It can allow more cells to be included on each panel. As a result, nearly 100 percent of the panel is covered with solar cells to promote power
· Shingled modules avoid the influence of cell main bus bar shadowing to promote output power
· Shingled modules reduce resistance inside and decrease impedance to enhance power
· Shingled modules use ECA instead of solder ribbon and reduce cracking among cells. It can improve greatly the reliability outdoors. Shingled structure makes sure that each cell string has contained lower current for reducing risk of hot spot. Shingled modules have a beautiful appearance, which is suitable for residential.
· Besides IEC, Shingled Module can be compatible with main technology of crystalline silicon cells, such as: black silicon, PERC, HJT and so on.
· It can reduce module transportation cost.
· It can reduce system installation space with same output power, which is suitable for installation environment with limited area.
· It can save BOS cost, shingled modules can reduce system project cost, including holder, cable, bus bar for hardware cost and also labour cost、management cost.
· Hyundai shingled modules offer customers 20 years product warranty and 25 years linear performance warranty (datasheet Shingled Module)
Seamless Soldering And Shingled Solar Panels
Overlapping cut cells 400W 405W Solar Panel
440W Half-cell PERC Monocrystalline Solar Panel
410W Half-cell PERC Monocrystalline Solar Panel
