Your Professional Commercial Solar Panel Supplier
Founded in 2016, Voltix is a leading international brand specializing in integrated solar-storage-charging solutions. We operate a 20,000+ m² factory with over 200 employees,Our fully-owned manufacturing system covers battery production, solar modules, inverters, energy storage systems, and charging equipment, allowing us to offer comprehensive solutions to meet the global demand for sustainable energy.
Why choose us
Our Certificate
The products have passed international certifications such as ISO9001、ISO14001、CE, RoHS, and UN38.3, and comply with safety standards such as IEC62133, ensuring compliance and safety when entering the global market.
Strong R&D Capability
Our team includes 30+ skilled engineers. We focus on battery design, BMS control, and integrated solar-storage-charging technology.
Sales Market
We export our products to Southeast Asia, Europe, South Africa, and more. We offer energy solutions for different regions.
Wide Product Applications
Our systems work in homes, commercial and industrial parks, telecom sites, e-mobility, and off-grid areas. They support many real-world needs.
A Polycrystalline Silicon Solar Cell is made up of several photovoltaic cells, each of which contains silicon crystals that serve as semiconductors. These types of solar cells are exposed to sunlight, which causes the silicon to absorb its energy and release electrons. Electron mobility produces an electric current that can be used to generate power.
After being collected by the cells’ metal contacts, the produced electricity is sent to an inverter, where it is converted into a form suitable for power buildings. This method enables polycrystalline solar panels to convert sunlight into pure, renewable electricity.
|
Efficiency(%) |
Pmpp(W) |
Umpp(V) |
Impp(A) |
Uoc(V) |
Isc(A) |
|
19.0 |
4.68 |
548.4 |
8.537 |
641.6 |
8.998 |
|
18.9 |
4.65 |
546.8 |
8.517 |
640.4 |
8.985 |
|
18.8 |
4.63 |
545.2 |
8.497 |
638.9 |
8.968 |
|
18.7 |
4.60 |
543.7 |
8.475 |
637.7 |
8.942 |
|
18.6 |
4.58 |
542.3 |
8.453 |
636.5 |
8.928 |
|
18.5 |
4.55 |
540.7 |
8.430 |
635.7 |
8.919 |
|
18.4 |
4.53 |
539.7 |
8.411 |
634.2 |
8.901 |
|
18.3 |
4.51 |
537.1 |
8.408 |
632.4 |
8.883 |
Features of Polycrystalline Silicon Solar Cell
Eco-Friendliness: Harnessing pristine and renewable solar energy through polycrystalline panels to generate electricity showcases its substantial contribution to environmental sustainability. Producing electricity devoid of greenhouse gases or other perilous pollutants assists in curbing carbon footprint and averting climate change.
Temperature Resilience: For denizens residing in scorching climates, polycrystalline solar panels can prove highly advantageous, as they exhibit commendable temperature resilience, enabling them to perform admirably in sweltering surroundings.
Temperature Coefficient: A solar panel’s temperature coefficient elucidates how fluctuations in temperature might impact its efficiency and electricity production. Polycrystalline panels typically possess a higher temperature coefficient than monocrystalline panels, indicating that their efficiency may decline significantly as the temperature ascends. Nevertheless, technological breakthroughs have bolstered the temperature coefficient of contemporary polycrystalline panels.
Power Density: The quantum of power generated by solar panels relative to their size is denominated as power density. Polycrystalline panels manifest a lower power density compared to other panel variants, implying that they will necessitate slightly more space to generate an equivalent amount of electricity. Nonetheless, this disparity is trifling and is unlikely to exert a substantial influence on their overall performance.
Structural Frame: A robust structural frame in polycrystalline solar panels affords support, protection, and durability. The underlying objective of this sturdy framework is to fortify polycrystalline solar against inclement weather conditions such as gusts of wind, heavy snowfall, and hail. It also ensures the panels’ longevity throughout their operational lifespan.
Less Expensive than Monocrystalline Solar Panels: If you aspire to invest in solar power system while managing your budget then Polycrystalline panels will befit you the best as it is cost-effective to fabricate than monocrystalline panels.
High Power Density: Despite being less efficient than monocrystalline panels, polycrystalline panels often proffer competitive power density. This implies they can engender a substantial measure of electricity for the available space, rendering them suitable for installations with limited area.
Durability and longevity: Polycrystalline panels are engineered in a way so that they can withstand inclement weather conditions, such as rain, snow, and hail. It also provides warranties which may extend up to 25 years or more.
Lower Electric Bills: You could downsize your reliance on grid power and perhaps truncate your electricity costs by fabricating your own electricity using solar energy.
Type of Polycrystalline Silicon Solar Cell
Standard polycrystalline silicon solar cells
Use traditional polycrystalline silicon wafers (composed of multiple silicon crystal particles) with a planar or simply textured surface.
Black silicon polycrystalline silicon solar cells
A "black silicon" surface is formed through nanostructured surface treatments (such as laser etching or chemical etching) to reduce light reflection.
PERC polycrystalline silicon solar cells
Based on standard polycrystalline silicon cells, a passivation layer (such as aluminum oxide or silicon nitride) is added to the back to reduce carrier recombination.
Bifacial polycrystalline silicon solar cells
Employ transparent or glass backsheets, allowing light to pass through from the back and be reflected for utilization.
Application of Polycrystalline Silicon Solar Cell
Residential Solar Panels: It proved to be a low-cost solution for households who want to generate electricity for their own house and save money on their utility bills. The panels can be installed on a house, garage, etc.
Commercial Solar Panels: They can be used for commercial applications too. Businesses and commercial properties need more energy which can be saved by installing polycrystalline solar panels on rooftops or anywhere with abundant sunlight.
Utility-scale solar panels: Polycrystalline panels can be harnessed in colossal solar farms as well as gargantuan utility-scale installations. These installations consist of sprawling arrays of solar panels that engender a substantial abundance of electricity that may be infused into the grid to energize a vast region.
Standalone Solar Panels: Polycrystalline solar panels can be employed in autonomous applications such as electrifying remote areas or off-grid setups. They can empower cabins, remote communication stations, water pumping systems, and other contraptions, where connection to the main grid is not viable or cost-effective.
Agricultural Applications: Solar panels can be set in motion on farms and generate electricity for the purpose of agricultural operations. This methodology is dubbed agrivoltaics, which bestows dual advantages that are energy generation and land utilization.
Emergency and Disaster Relief: Portable polycrystalline solar panels can be deployed for exigency or calamity relief scenarios to furnish power for charging devices, illuminating and indispensable equipment
Working Principle of Polycrystalline Silicon Solar Cell
Sunlight Absorption
When sunlight hits the surface of the solar cell, the energy from photons excites electrons in the silicon material, creating electron-hole pairs.
Generation of Charge Carriers
The energy from photons frees electrons, generating a flow of electrical charge within the silicon structure.
Charge Separation
Metal contacts on the top and bottom of the cell create an electric field, which directs electrons toward the external circuit and holes toward the opposite contact.
Electric Current Flow
The movement of electrons through the external circuit produces direct current (DC) electricity, which can be used to power electrical devices or stored in batteries.
Power Conversion
The DC electricity can be converted into alternating current (AC) using inverters for use in homes and businesses.
Repeat Cycle
Continuous exposure to sunlight sustains the process, generating ongoing electrical power as long as sunlight is available.
How Polycrystalline Solar Cells Convert Sunlight into Electricity
Absorption
When sunlight hits a polycrystalline solar panel, the photons (or particles of light) are absorbed by the solar cells.
Generation
Once the photons are absorbed, they knock electrons in the silicon atoms of the solar cells to a higher energy level. This generates an electric field across the solar cell.
Collection
The electric field created by the absorbed photons causes the electrons to flow through the solar cells and into the electrical circuit, generating a flow of electricity.
Conversion
The electrical energy generated by the solar panel is then converted from direct current (DC) to alternating current (AC) by an inverter, which can be used to power household appliances or fed back into the electrical grid.
How are Polycrystalline Silicon Solar Cell made
They’re made with polysilicon – hence the name – which is produced by heating up quartzite in temperatures of about 1,700°C.
This process separates the quartzite, also known as silicon dioxide, by releasing the oxygen and leaving the silicon.
Since this silicon comes from many different chunks of quartzite, it’s called polysilicon. This material is refined via the Siemens process, channelled into large moulds, then sliced into wafers.
Workers will then print a grid pattern of metal contacts onto these wafers, giving them the ability to carry electric current, before affixing them to glass or plastic, and attaching a backsheet and frame.
The resulting product is blue, since the existence of multiple silicon crystals creates grain boundaries that cause light to be scattered before being absorbed.
This requires the electrons to use more energy as they flow through, which reduces the panel’s efficiency, output, and lifespan.
Monocrystalline solar panels, on the other hand, undergo an extra step known as the Czochralski method, which turns polysilicon into a single ingot that ultimately leads to black solar panels.
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