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Assembly Conditions For Solar Panels

Assembly conditions for solar panels

The function of the solar panel is to convert the sun's light energy into electrical energy, and then output the DC power to the battery. Solar panel is one of the most important components in a solar power system. Its conversion rate and service life are important factors that determine whether a solar cell has value in use.

Solar module design: According to the International Electrotechnical Commission GB / T9535-98 and IEC61215 standards, the battery chips are designed in accordance with the GBT6495 standard requirements. 36 or 72 polycrystalline silicon solar cells are connected in series to form various types of 12V and 24V modules. The solar module can be used in various household photovoltaic systems, independent photovoltaic power stations and grid-connected photovoltaic power stations. Characteristics of raw materials Cells: High-efficiency (above 15.5) polysilicon (single-crystal silicon above 16.5) solar cell packages are used to ensure sufficient power generation of solar panels. Glass: Low-iron tempered suede glass, also known as white glass, with a thickness of 3.2mm in the wavelength range of the solar cell's spectral response of 320-1100nm and a light transmittance of more than 91, has a high reflectance for infrared light greater than 1200nm. The glass is also resistant to the sun's ultraviolet radiation and the transmittance does not decrease. EVA: Uses a high-quality EVA film layer with a thickness of 0.78mm added with anti-ultraviolet agents, antioxidants and curing agents as the sealant for solar cells and the connecting agent with glass and TPT. Has a high light transmittance and anti-aging ability.

TPT: The back cover of the solar cell-the fluoroplastic film is white, which reflects the sunlight, so it slightly improves the efficiency of the module, and because of its high infrared emission rate, it can also reduce the operating temperature of the module. Conducive to improving the efficiency of the component. Of course, this fluoroplastic film first has the basic requirements of aging resistance, corrosion resistance and air tightness required by solar cell packaging materials. Frame: The aluminum alloy frame used has high strength and strong resistance to mechanical impact. Basic requirements such as air tightness. Basic parameters Standard test conditions: (AM1.5) Irradiance 1000W / m2 Battery temperature 25 ° C Insulation voltage and voltage: ≥600V (≥100V above 100W) Frame ground resistance: ≤10hm Upwind pressure: 2400Pa Fill factor: 73% Short circuit Current temperature coefficient: 0.4mA / ℃, open circuit voltage temperature coefficient: -60mV / ℃, working temperature: -40 ℃ ~ 85 ℃, component wiring instructions, tools required for installation, M4 slotted screwdriver, Phillips screwdriver.

Opening the terminal box cover Insert the M4 slotted screwdriver into the mounting hole on the box cover according to the label on the terminal box, and gently lift one leg up.In this way, first lift the four corners of the side to open the box cover . There is a wiring cover inside the box, you can see the three wiring terminals by lifting it.

In 1849, the term "photo-voltaic" appeared, meaning the generation of electromotive force by light. In the 1950s, with the gradual understanding of the physical properties of semiconductors, Bell Labs in the United States discovered in 1954 that doping a certain amount of impurities in silicon would make it more sensitive to light, and produced the first Solar cells for practical applications.

There are more positively charged holes, while N-type silicon has more negatively charged electrons. The electrons and holes diffuse and recombine relatively, and a built-in electric field is generated at the contact surface of the P-type and N-type silicon materials from the N-type silicon to the P-type silicon. When the incident sunlight is absorbed, the electrons generated at the built-in electric field will be moved to the N-type silicon by the electric field, and the holes will be moved to the P-type silicon and accumulated on both sides. If connected by wires, current can be generated.