What is a solar photovoltaic module?

Single solar photovoltaic modules cannot be used directly as power sources. As the power source of solar photovoltaic modules, several single cells must be connected in series, connected in parallel, and tightly sealed to form solar photovoltaic modules. Solar photovoltaic modules are the core part of the solar power system and the most important part of the solar power system. The role of solar photovoltaic modules is to convert solar energy into electrical energy, or send it to storage batteries, or drive loads to work. So what is a solar photovoltaic module? Let us take a look together next.

Here is the content list:

• Principles of solar photovoltaic module power generation

• Solar photovoltaic module component materials

Principles of solar photovoltaic module power generation

For positive and negative charges, the solar photovoltaic module can generate an external current field because the positive and negative charges in the PN junction area are separated, and the current flows from the bottom end of the crystalline silicon solar photovoltaic module through the load to the top of the battery. This is the "photovoltaic effect" of solar photovoltaic modules. When a load is connected between the upper and lower surfaces of the solar photovoltaic module, current will flow through the load, and the solar photovoltaic module will generate current. The more photons a solar photovoltaic module absorbs, the greater the current generated. The energy of a photon is determined by wavelength. A photon below the base energy cannot produce free electrons. A photon with higher energy than the base energy will only produce one free electron. The excess energy will cause the solar photovoltaic module to heat up, and the solar photovoltaic module will lose electricity. The impact of this will reduce the efficiency of solar photovoltaic modules.

Solar photovoltaic module component materials

Solar photovoltaic module glass: ultra-white cloth-patterned tempered glass, with a thickness of 3.2mm, with a light transmittance of more than 91% within the wavelength range of the solar photovoltaic module's spectral response (320-1100nm), resistant to ultraviolet radiation, and the light transmittance does not decrease. The solar photovoltaic module made of tempered glass can withstand the impact of an ice ball with a diameter of 25 mm at a speed of 23 meters per second.

EVA: A high-quality EVA film with a thickness of 0.5 mm is used as a sealant for solar photovoltaic modules and a connecting agent with glass and TPT. Solar photovoltaic module EVA has high light transmittance and anti-aging ability. Performance requirements of EVA film used for solar photovoltaic module encapsulation after curing.

The light transmittance of EVA used for encapsulation of solar photovoltaic modules is greater than 90%, the degree of cross-linking is greater than 65-85%, the peel strength of EVA (N/cm), glass/adhesive film used for encapsulation of solar photovoltaic modules is greater than 30; TPT/adhesive film is greater than 15. The EVA used for solar photovoltaic module encapsulation must have temperature resistance: high-temperature 85℃, low temperature -40℃.

TPT: The back of the solar photovoltaic module, the solar photovoltaic module has basic requirements such as aging resistance, corrosion resistance, ultraviolet radiation resistance, and airtightness.

Frame: The aluminum alloy frame of the solar photovoltaic module used has high strength and strong resistance to mechanical impact.

To let consumers know what solar photovoltaic modules are, the manufacturer of Anhui JF Solar Technology Co., Ltd. (JF Solar) puts the product description of solar photovoltaic modules on each product. If you are interested in solar photovoltaic modules, you can contact us, our website is https://www.jf-solartech.com/.