Are solar panel frames needed for solar modules?
From the picture of solar panel material breakdown as below, we can see that solar panel frames are part of solar panels. It hugs the glass covering the top and the solar back sheet at the bottom.
From this picture, we know that A solar PV module consists of solar cells, glass, EVA, backsheet, and frame.
Among these components, the most important part is solar cells, and the most common material to create PV cells with is silicon crystals. As per solar frame, it seems to be a protective item for solar modules.
The frame will also provide protection against impact and weather. The use of a frame will also allow the mounting of the panel in a variety of ways, for example with mounting clamps.
EVA (ethylene vinyl acetate) is the glue that binds everything together. It is very important that the quality of the encapsulant is high so it doesn’t damage the cells under harsh weather conditions.
Solar glass is a type of window and building material that is designed to block radiant heat transfer, which is basically the amount of heat from the sun that passes through the glass and into whatever space is on the other side. This type of glass is most commonly used in the windows of office buildings and homes, though sometimes it is also used in automobiles and in industry, often in the panels of warehouses or machinery that is exposed to a lot of solar radiation. There are a number of different coatings that can be applied, each with its own specifications. Most are designed to reduce heat absorption and improve insulation, both of which can reduce energy costs.
Functions of solar panel frames?
1. Prevent solar cells and glass from damage during mass production and transport of solar modules.
2. It will be installed easier because of the mounting holes from the solar frames.
3. Multy color treatment of the frames makes the surface more beautiful.
4. It can adapt to various environments through the selection of different materials;
5. The service life is more than 25 years.
It seems that frames are needed for solar modules, while before we give this conclusion, we should talk about the types of solar panels.
Types of solar panels/solar module
There are three major types of solar panels: monocrystalline, polycrystalline, and thin-film. Each type has its own unique advantages and disadvantages, and the solar panel type best suited for your installation will depend on factors specific to your own property and desired system characteristics.
What do different solar panel types look like?
Monocrystalline solar panels
If you see a solar panel with black cells, it’s most likely a monocrystalline panel. These cells appear black because of how light interacts with the pure silicon crystal.
While the solar cells themselves are black, monocrystalline solar panels have a variety of colors for their back sheets and frames. The back sheet of the solar panel will most often be black, silver or white, while the metal frames are typically black or silver.
Polycrystalline solar panels
Polycrystalline solar cells tend to have a bluish hue to them due to the light reflecting off the silicon fragments in the cell in a different way than it reflects off a pure monocrystalline silicon wafer.
Similarly to monocrystalline, polycrystalline panels have different colors for back sheets and frames. Most often, the frames of polycrystalline panels are silver, and the back sheets are either silver or white.
Thin-film solar panels
As their name suggests, thin-film panels are often slimmer than other panel ty[es. This is because the cells within the panels are roughly 350 times thinner than the crystalline wafers used in monocrystalline and polycrystalline solar panels.
Unlike mono and poly solar panels, thin-film solar panels do not need frames because of its special characteristics.
Mono and poly solar panels cover a big area of the solar panels market and only 15% of thin-film solar panels are needed globally. And based on our marketing experience, First Solar get the top share of the thin-film solar panels.
Finally we can draw the conclusion that solar panel frames are needed for mono and poly panels but not needed for thin-film solar panels.
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