Solar energy is a green, sustainable and non-polluting energy source, which is widely used in the production of electricity and heating. Monocrystalline silicon cells are currently the fastest developed solar cells, with a high photoelectric conversion efficiency, which can reach more than 20%. This means that monocrystalline silicon cells can more effectively convert solar energy into electricity, improving the power generation efficiency of photovoltaic systems. It is also an important part of the production of integrated circuits used in computers, mobile phones and televisions. But compared to polysilicon, mass production is more expensive, so polysilicon is more commonly used in solar cells. Manufacturing silicon products for the solar and electronics industries requires accurate, reliable temperature measurements to ensure excellent quality and process efficiency. This is becoming increasingly important as the demand for these products grows.

In many fault types, the thermal spots of crystalline silicon batteries are the most harmful and occur most frequently. Heat spot refers to the barrier due to the battery broken, hidden cracks, welding and other quality problems or shadows, feces, dust and so on. The problem battery is used as a load to consume the energy generated by the other series batteries, resulting in a local temperature rise.

By detecting the temperature distribution on the surface of crystalline silicon cells, the potential defects of crystalline silicon cells can be found by using infrared thermal imager. The infrared thermal imager can be used for the detection of crystalline silicon cells in real time, large quantities and fast detection. Through the temperature distribution displayed by thermal imaging, the staff can quickly find the problem area and accurately locate the location of the hot spot.

Some of the application points of infrared thermal imagers in the solar and silicon industries:

The polycrystalline silicon reactor

The temperature control in the reactor is very important for the production of high-purity polysilicon for solar cells. The infrared thermal imager can monitor the temperature of the polysilicon reactor in real time and assist the staff to control the temperature.

Photovoltaic module assembly

Infrared thermal imagers can detect extremely small temperature differences, providing clear thermal imaging pictures and providing complete temperature data that can help workers detect small defects.

Polycrystalline silicon ingots

The infrared thermal imager can detect the temperature of polysilicon ingot, which provides the simplest and most convenient management method for the solidification process of polysilicon casting.