Why should you buy shingled cell solar panels?
To keep up with the evolving needs of people, technology must constantly innovate. In recent years, leading solar battery manufacturers such as Anernmarketing have transformed the technology in their high-end shingled cell solar panels from traditional Full-cell to Half-cell.
New cell with outstanding advantages in terms of performance, performance, longevity…So what is the improvement in this battery compared to traditional panels that makes people so interested?
Distinguishing Full-cell and Half-cell solar panels
Full-cell battery panel
Full-cell solar panels are traditional batteries usually consisting of 60 cells, connected in series. Normally, Full-cell batteries, each cell is usually 6 inches x 6 inches (equivalent to 156mmx156mm). Investors often choose this type of solar panels a lot because of the low cost.
What is a Half-cell panel?
Half-cell is a technology created by using the traditional method of dividing a cell into two equal halves by a laser beam. The cells connect together to form a complete panel. This technique increases the efficiency of the panels. Moreover, it makes them more efficient than conventional Full-cell panels.
Half-cell technology is quite popular, which is a major turning point in the technology of solar battery systems. So far, in addition to Anernmarketing, there have been many manufacturers applying Half-cell technology to their solar battery production lines.
Features of identifying shingled cell solar panels
– The solar panel divides into 2 symmetrical halves and separated by a white line in the middle.
– Cell of the solar panel has a rectangular shape and has twice the number of conventional panels.
– The connection wire locates in the middle of the plate and separates the 2 ends
The outstanding advantages of Half-cell solar panels
Reducing the amperage flowing on the bus bars (shiny metallic streaks on the panel’s surface, with power transmission function) to minimize consumption, maximize efficiency
Shingled cell solar panels use photovoltaic cells that are cut in half. Hence, it improves photovoltaic efficiency. The traditional form of panels with 60 and 72 photovoltaic cells will have 120 and 144 half-cell photovoltaic cells, respectively.
– When the photovoltaic cell comes in half, its current is also halved, resulting in reduced resistance losses and the panel being able to produce more power. According to the loss calculation formula: P= (I^2)*R when the current I is halved, the loss will be reduced by 4 times.
Reducing the bus bar size increases the efficiency of light absorption
The bus bars themselves running along the battery cells also partially shade the sun, reducing the efficiency of light absorption. Therefore, reducing the bus bar size will increase the absorption efficiency of the battery cell.
Optimizing the operation of solar panels when shaded
For shingled cell solar panels, due to being connected in series, usually, if a cell shades, the capacity of the whole panel will reduces. Therefore, to avoid this problem, manufacturers have divided the cells into 3 lines connected in series and used 3 diodes to separate the shaded cell arrays. Therefore, if a cell is shaded, the panel will reduce its capacity by 1/3.
But with Half-cell panels, the cells will be divided into 6 lines, if 1 cell shades, the capacity of the panel will only decrease by 1/6. So, under the same condition that the panels shade, the performance of shingled cell solar panels reduces compared to the Full-cell system.
Increased longevity and durability of shingled cell solar panels
– Experts have conducted an experiment that shows that smaller photovoltaic cells are less susceptible to mechanical loads, thereby reducing the possibility of cracking and breaking.
Half-cell series shingled cell solar panels will give higher output power and are more reliable than traditional technology solar panels. Therefore, not only increasing efficiency, Half-cell panels also increase the durability of the electrical system.
When a battery cell shades, the energy obtained from the light conversion of the unshaded cells in the same array will flow to the shaded cell and generate heat. If this phenomenon occurs for a long time, it will lead to the risk of battery damage.
For Half-cell batteries, the conduction distance is short, many bus bars, the current flowing in the bus bar reduces by half. It will be possible to minimize the heat generation due to this shaded battery cell.
How do shingled cell solar panels work?
Energy from the sun provides an abundant source of energy that is inexhaustible and does not produce carbon dioxide emissions. Therefore, the development of shingled cell solar panels technology industry is being interested by many scientists. So what is a solar battery? How does it work?
What are solar panels?
Solar panels are special materials capable of converting sunlight into electricity installed in a solar power system. Just like hydroelectricity generates electricity from water, thermoelectricity generates electricity from coal… and solar cells generate electricity from the sun’s light.
The structure of solar cells is made of monocrystalline and polycrystalline photovoltaic cells. They are highly efficient and have an average lifespan of up to 30 years.
The history of the development of solar cells:
The photoelectric effect was first discovered in 1839 by French physicist Alexandre Edmond Becquerel. However, it was not until 1883 that a new solar cell created, by Charles Fritts, who coated the selenium semiconductor circuit with an extremely thin layer of gold to form the junction.
The device is only 1% efficient, credited by Russell Ohl as the creator of the first solar cell in 1946. Sven Ason Berglund had a method that involved increasing the battery’s ability to perceive light.
Working principle of solar cell:
A solar panel (solar panel/solar cell/photovoltaic cell) is a device that directly converts sunlight (photovoltaic) energy into electrical energy (electricity) based on the photovoltaic effect. The photoelectric effect is the ability of matter to emit electrons (electrons) when illuminated by light.
Silicon is known as a semiconductor. “Semiconductors are intermediate materials between a conductor and an insulator. Semiconductors act as an insulator at low temperatures and conduct electricity at room temperature.” With such properties, silicon is an important component in the structure of solar cells.
Silicon has a limited electrical conductivity, but it has a crystalline structure that is good for making semiconductors. The silicon atom needs 4 electrons to neutralize the charge, but the outer shell of a silicon atom only has half the number of electrons needed so it will cling to other atoms to find a way to neutralize the charge.