The most important thing to know about how to market solar panels is to know

There are also procedures that need to be taken by the company and the company.

How to calculate the rate of return, ** the subsidy given.

How many square meters of electricity! State subsidy policy! How much is the square meter of local policy.

Home solar panels have gradually become well-known in recent years, so are home solar panels good? Next, let's go through the following content to understand it specifically!

Principle of home solar panels.

Household solar panels are the core part of the solar power system, the role of solar panels is to convert the sun's light energy into electricity, and then output direct current and store it in the battery. Solar panels are one of the most important components in household solar power generation, and their conversion rate and service life are important factors in determining whether solar cells have use value.

How about home solar panels.

1. Cell: Adopt high-efficiency (above) monocrystalline silicon solar sheet packaging to ensure that the power generation power of solar panels is sufficient.

2. Glass: low-iron tempered suede glass (also known as white glass) is used, with thickness, transmittance of more than 91% in the wavelength range of solar cell spectral response (320-1100nm), and high reflectivity for infrared light greater than 1200nm. At the same time, the glass can resist the radiation of the sun's ultraviolet rays, and the light transmittance does not decrease.

3. EVA: The high-quality EVA film with the thickness of anti-ultraviolet agent, antioxidant and curing agent is used as the sealing agent of solar cells and the connecting agent between glass and TPT. It has high light transmittance and anti-aging ability.

4. TPT: The back cover of the solar cell - fluoroplastic film is white, which reflects sunlight, so the efficiency of the element is slightly improved, and because it has a high infrared emissivity, it can also reduce the working temperature of the element, and is also conducive to improving the efficiency of the element. Of course, this fluoroplastic film first has the basic requirements of aging resistance, corrosion resistance, and impermeability required by solar cell packaging materials.

5. Frame: The aluminum alloy Zhenglu frame used has high strength and strong mechanical impact resistance. It is also the most valuable part of household solar power generation.

Its function is to convert the sun's radiation capacity into electrical energy, or send it to the battery for storage, or push the load to work. About home solar panels.

Top China Yingli I spent four years there knowing how the front-line workers in the workshop carried out production tasks. Absolutely.

The largest in China is Wuxi Suntech.

There are three types of photovoltaic systems:

1. Independent photovoltaic power generation system, main components 1Photovoltaic Array 2PV 3Battery pack 4Inverter 5Monitoring System 6Load.

2. Grid-connected photovoltaic power generation system, main components 1Photovoltaic Array 2Grid-tied inverter 3Public Grid 4Monitoring system.

3. Distributed photovoltaic power generation system, main components 1Photovoltaic Array 2DC combiner box 3

DC Distribution Cabinet 4Grid-tied inverter 5AC distribution cabinet 6

Load 7Public Grid 8Monitoring system.

Fourth, the composition of solar cell modules and the functions of each part:

1) Tempered glass is used to protect the main body of power generation (such as cells), and the selection of light transmission is required, 1The light transmittance must be high (generally more than 91%); 2.Ultra-white tempered treatment.

2) EVA is used to bond and fix the tempered glass and the main body of power generation (such as cells), the advantages and disadvantages of transparent EVA material directly affect the life of the module, and the EVA exposed to the air is easy to age and yellow, thereby affecting the light transmittance of the module, thereby affecting the power generation quality of the moduleIn addition to the quality of EVA itself, the lamination process of the module manufacturer also has a very large impact, such as the EVA adhesive bonding is not up to standard, and the bonding strength between EVA and the tempered glass and backplate is not enough, which will cause EVA to age prematurely and affect the life of the module.

3) The main role of the cell is to generate electricity, the main power generation market is the mainstream crystalline silicon solar cells, thin-film solar cells, both have their own advantages and disadvantages of crystalline silicon solar cells, the equipment cost is relatively low, but the consumption and cell cost is very high, but the photoelectric conversion efficiency is also high, the power generation in outdoor sunlight is more suitable for thin-film solar cells, the relative equipment cost is higher, but the consumption and battery cost is very low, but the photoelectric conversion efficiency is more than half of the crystalline silicon cell, but the weak light effect is very good, It can also generate electricity under ordinary lights, such as the solar cells on the calculator.

4) EVA functions as above, mainly bonding and encapsulating the power generation body and backplane.

5) Backplane function, sealing, insulation, waterproof (generally used TPT, TPE and other materials must be age-resistant, most module manufacturers warranty is 25 years, tempered glass, aluminum alloy is generally no problem, the key is to meet the requirements with the backplane and silicone. ）

6) Aluminum alloy protects the laminate, which plays a certain role in sealing and supporting.

7) Junction box protects the whole power generation system, plays the role of a current transfer station, if the component short-circuit junction box automatically disconnects the short-circuit battery string to prevent burning out the whole system junction box The most critical thing is the selection of diodes, according to the type of cells in the module, the corresponding diodes are not the same.

8) Silicone sealing, used to seal the junction between the component and the aluminum alloy frame, the component and the junction box Some companies use double-sided adhesive strips and foam to replace silica gel, and the domestic commonly used silica gel, the process is simple, convenient, easy to operate, and the cost is very low.

To convert the sun's energy into electricity, only the combination of solar panels, lithium batteries, and controllers can play a role in generating electricity.

Solar panels, also called photovoltaic cells, refer to the voltage generated under the action of light, and then the current will be generated when the load is connected. Photovoltaic cells are divided into crystalline silicon, amorphous silicon, microcrystalline silicon, selenium photonics, organic semiconductors and compound solar cells according to the production materials.

Crystalline silicon cells are divided into: monocrystalline silicon solar cells and polycrystalline silicon solar cells, and the conversion rate of crystalline silicon cells can reach 16%-20%, which is the most widely used solar cell, especially for large-scale ground solar power stations. The disadvantage is that it cannot generate electricity in low light.

Amorphous silicon cells are divided into: single-junction solar cells, double-junction solar cells, and multi-junction solar cells. The conversion rate of amorphous silicon cell power is only 7% to 10%, which is not large in the current application market.

The advantage is that it is highly adaptable to weak light and scattered light, so most of these solar modules are used in areas with more humid weather or low latitudes. Solar modules refer to finished solar panels that have been processed with solar cells.

I don't know if it will help you, you can Beijing Hetian New Energy, I heard that his battery panel is good.

The upstairs is very detailed, so I won't say it.

Answer monocrystalline silicon solar cells: At present, the photoelectric conversion efficiency of monocrystalline silicon solar cells is about 15%, and the highest is 24, which is the highest photoelectric conversion efficiency among all types of solar cells at present.

Xinhai", "Jindi", "Tianyang". Generally speaking, 1 square crystalline silicon solar panel is about 120-140W, if it is calculated at 120W, the sun at 6 o'clock a day is 120 6 720W.

The above is the answer to this question.

Find out more about the benefits.

I know he'll test it.

1. Battery test: first classify the performance parameters of the cell, so that it can effectively combine the cells together. Battery testing classifies batteries by testing the size of the battery's parameters, etc., to make a quality battery and improve the efficiency of the battery.

2. Frontal welding: It is to weld the busbar to the front (negative) of the battery, the busbar is tinned copper strip, and the welding machine we use can spot weld the ribbon on the busbar in the form of multiple points.

3. Back side connection: It is to use different templates according to different solar panels, so that the size of the back welding groove corresponds to the size of the battery, and it is completely integrated.

4. Lamination laying: When the back is connected in series and passed the inspection, then the component string, glass and cut EVA, glass fiber, and backplate are laid according to a certain level and ready for lamination.

5. Module lamination: Put the laid battery into the laminator, extract the air in the module through vacuuming, and then heat to melt EVA to bond the battery, glass and backplate together; Finally cool and remove the components.

6. Trimming: When laminating, EVA will be cured outward due to pressure after melting, and burr will be formed, and the staff will remove it.

7. Framing: similar to putting a frame on glass; Install aluminum frames for glass modules to increase the strength of the modules, further seal the battery modules, and extend the service life of the solar panels.

8. Soldering junction box: Soldering a box at the lead on the back of the component for easy connection with other equipment.

9. High-voltage test: High-voltage test refers to applying a certain voltage between the frame of the module and the electrode lead to test the voltage resistance and dielectric strength of the module, and test whether it can be used normally under harsh conditions.

10. Module test: This is the final test, which is mainly to determine the output power of the battery and test its output characteristics, so that the quality level of the solar panel can be displayed.

A solar cell is a device that responds to light and converts light energy into electricity. There are many kinds of materials that can produce photovoltaic effects, such as: monocrystalline silicon, polycrystalline silicon, amorphous silicon, gallium arsenide, selenium, indium copper, etc.

The principle of their power generation is basically the same, and the process of light generation is described by crystal as an example. p-type crystalline silicon can be doped with phosphorus to obtain n-type silicon to form p-n junction.

When light hits the surface of a solar cell, a portion of the photons are absorbed by the silicon material; The energy of the photons is transferred to the silicon atoms, so that the electrons undergo a migration, becoming free electrons and accumulating on both sides of the p n junction to form a potential difference, when the external circuit is turned on, under the action of this voltage, there will be a current flowing through the external circuit to produce a certain output power. The essence of this process is the process of converting photon energy into electrical energy.

Hope it helps