250 Watt Photovoltaic Poly Solar Panel supplier

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Loading Port:
China main port
Payment Terms:
TT or LC
Min Order Qty:
1000 watt
Supply Capability:
500000 watt/month

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Item specifice:

Material: Polycrystalline Silicon Max. Power(W): 250 Number of Cells(pieces): 60

Product Description:

Instruction

Quality and Safety

1. Rigorous quality control meets the highest international standards.

2. High-transmissivity low-iron tempered glass, strong aluminium frame.

3. Using UV-resistant silicon.

4. IS09001/14001/CE/TUV/UL  

5.3w-300w mono & poly solar panel supply

Warranties

1. 10 years limited product warranty

2. 15 years at 90% of the minimal rated power output

3. 25 years at 80% of the minimal rated power output

   

Feature

1. High efficiency and High power.

2. Long-term electrical stability.

3. Lowest price and Fastest delivery.

4. Good quality and good service.

5.Bulk supply

6. Good Warranty

7.Big Sale

8.High quality

9.More than 35 years on the lifetime.

10 DHL/Fedex/UPS/TNT/EMS etc

 

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250 Watt Photovoltaic Poly Solar Panel supplier

250 Watt Photovoltaic Poly Solar Panel supplier

Specification

 

Model

SIM-100

Maximum Power at ST(Pmax)W

100Wp

Maximum Power Voltage(Vmp)V

18.0V

Maximum Power Current(Imp)A

5.56A

Open Circuit Voltage(Voc)V

22.0V

Short Circuit Current(Isc)A

5.9A

Cell Efficiency(%)

17.0%

Module Efficiency(%)

15.37%

Operating Temperature°C

-40°C to    85°C

Maximum system voltage

1000V(IEC)DC

Power tolerance

-0.03

Temperature coefficients of Pmax

-0.45%/°C

Temperature coefficients of Voc

-0.27%/°C

Temperature coefficients of Isc

0.05%/°C

Weight(kg)

7.4

Number of cell(pcs)

4*9

 

FAQ

We have organized several common questions for our clients,may help you sincerely:

1). What’s price per watt?

A: It’s depends on the quantity, delivery date and payment terms of the order. We can talk further about the detail price issue. Our products is high quality with lower price level.

2). Can you tell me the parameter of your solar panels?

We have different series of cells with different power output, both from c-si to a-si. Please take our specification sheet for your reference.

3). How do you pack your products?

We have rich experience on how to pack the panels to make sure the safety on shipment when it arrives at the destination.

4). How long can we receive the product after purchase?

In the purchase of product within three working days, We will arrange the factory delivery as soon as possible. The perfect time of receiving is related to the state and position of customers. Commonly 7 to 10 working days can be served.


How do solar cells work?

A solar cell is a sandwich of n-type silicon (blue) and p-type silicon (red). It generates electricity by using sunlight to make electrons hop across the junction between the different flavors of silicon:

  1. When sunlight shines on the cell, photons (light particles) bombard the upper surface.

  2. The photons (yellow blobs) carry their energy down through the cell.

  3. The photons give up their energy to electrons (green blobs) in the lower, p-type layer.

  4. The electrons use this energy to jump across the barrier into the upper, n-type layer and escape out into the circuit.

  5. Flowing around the circuit, the electrons make the lamp light up.

 Principles of  the  working about solar  cells

 Solar cells convert the sun’s energy into electricity. Whether they’re adorning your calculator or orbiting our planet on satellites, they rely on the the photoelectric effect: the ability of matter to emit electrons when a light is shone on it.

Silicon is what is known as a semi-conductor, meaning that it shares some of the properties of metals and some of those of an electrical insulator, making it a key ingredient in solar cells. Let’s take a closer look at what happens when the sun shines onto a solar cell.

Sunlight is composed of miniscule particles called 
photons, which radiate from the sun. As these hit the silicon atoms of the solar cell, they transfer their energy to loose electrons, knocking them clean off the atoms. The photons could be compared to the white ball in a game of pool, which passes on its energy to the coloured balls it strikes.

Freeing up electrons is however only half the work of a solar cell: it then needs to herd these stray electrons into an electric current. This involves creating an electrical imbalance within the cell, which acts a bit like a slope down which the electrons will flow in the same direction.

Creating this imbalance is made possible by the internal organisation of silicon. Silicon atoms are arranged together in a tightly bound structure. By squeezing small quantities of other elements into this structure, two different types of silicon are created: n-type, which has spare electrons, and p-type, which is missing electrons, leaving ‘holes’ in their place. 

When these two materials are placed side by side inside a solar cell, the n-type silicon’s spare electrons jump over to fill the gaps in the p-type silicon. This means that the n-type silicon becomes positively charged, and the p-type silicon is negatively charged, creating an electric field across the cell. Because silicon is a semi-conductor, it can act like an insulator, maintaining this imbalance.

As the photons smash the electrons off the silicon atoms, this field drives them along in an orderly manner, providing the electric current to power calculators, satellites and everything in between.

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Q:Is silicon-based solar cells and silicon-based thin-film solar cells the same?
Monocrystalline silicon polysilicon battery components with tempered glass panel aluminum alloy frame when the flat, hard board. Soft with flexible material, thin battery is a soft board
Q:Monocrystalline silicon and polycrystalline silicon cell in the appearance of what is the difference?
There is a part of the area filled with dissatisfaction, and polysilicon solar cells are square, there is no such problem, so the efficiency of the solar cell components is almost the same. In addition, due to the two solar cell materials manufacturing process is not the same, polysilicon solar cell manufacturing process consumption of energy than monocrystalline silicon solar cells about 30%, so polysilicon solar cells
Q:What are the tin bands, sinks and interconnections used on solar modules, and what are the solar cells used in the solar cells?
At present, the general crystal silicon cells using p-type silicon, in the phosphorus diffusion process, the two sides of the silicon and the edge will be phosphorus doping.
Q:Solar cells and the difference between ordinary batteries. Why is the solar cell is converted into electrical energy, zinc battery is what is converted into chemical energy
The so-called chemical energy, in fact, is "chemical potential". Can be released through the oxidation-reduction reaction of energy, into other energy. This is the release of chemical energy.
Q:How can the huge solar cells be applied into the market?
If you are just using power supply for daily usage, such as a family of 6, you don’t need the huge solar cells.
Q:What should I know about the Crystalline silicon photovoltaic cells?
Crystalline silicon photovoltaic cells, known as cSi PV, are made of silicon atoms connected to one another to form a crystal lattice. This lattice comprises the solid material that forms the photovoltaic (PV) cell's semiconductors.
Q:How many types of solar cells are now being used in real life?
3 kinds of solar cells, Silicon-based, organic, chemical.
Q:Does the solar cell generate electricity in the absence of the sun, only in the case of strong lights or lasers? If you can achieve how much, and the same day?
Sunlight is a composite light, in which only the frequency is greater than the solar cell threshold photons can effectively stimulate the solar cell power generation.
Q:What is the solar cells market in China?
The Chinese market is booming, but the solar cells' market was developed 8 years ago. It was supported by the Chinese government before because the whole country has been aiming at saving energy and protecting the envionment.
Q:How can I understand the working principles of solar cells?
My way of understand the working principles of solar cells is to read tons of books about that topic.

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