What is the role of solar photovoltaic modules?
What are the application fields of solar photovoltaic modules?

Solar photovoltaic modules are the core part of the solar power generation system, and also the most important part of the solar power generation system.

Application fields of solar photovoltaic modules

1. User solar power supply: 

(1) small power supply ranging from 10-100W, used for military and civilian life in remote areas without electricity, such as plateaus, islands, pastoral areas, frontier posts, etc., such as lighting, TV, tape recorders, etc.; 

(2) 3 - 5KW home roof grid-connected power generation system; 

(3) Photovoltaic water pump: solve deep water well drinking and irrigation in areas without electricity.

2. Transportation field: such as beacon lights, traffic/railway signal lights, traffic warning/sign lights, Yuxiang street lights, high-altitude obstruction lights, highway/railway wireless telephone booths, unattended road shift power supply, etc.

3. Communication/communication field: solar unattended microwave relay station, optical cable maintenance station, broadcast/communication/paging power system; rural carrier telephone photovoltaic system, small communication machine, GPS power supply for soldiers, etc.

4. Petroleum, marine, and meteorological fields: cathodic protection solar power systems for oil pipelines and reservoir gates, domestic and emergency power supplies for oil drilling platforms, marine testing equipment, meteorological/hydrological observation equipment, etc.

5. Household lamp power supply: such as garden lamps, street lamps, portable lamps, camping lamps, mountaineering lamps, fishing lamps, black light lamps, rubber tapping lamps, energy-saving lamps, etc.

6. Photovoltaic power station: 10KW-50MW independent photovoltaic power station, wind-solar (firewood) complementary power station, various large parking plant charging stations, etc.

7. Solar buildings: Combining solar power generation with building materials will enable large buildings in the future to achieve self-sufficiency in electricity, which is a major development direction in the future.

8. Other fields include: 

(1) Supporting cars: solar cars/electric cars, battery charging equipment, car air conditioners, ventilation fans, cold drink boxes, etc.; 

(2) Solar hydrogen production plus fuel cell regenerative power generation system; 

(3) Sea water Power supply for desalination equipment; 

(4) Satellites, spacecraft, space solar power plants, etc.

Photovoltaic glass, also known as "photoelectric glass", is a special glass that presses solar photovoltaic modules, can use solar radiation to generate electricity, and has related current extraction devices and cables. It is composed of glass, solar cells, film, back glass, special metal wires, etc. It is the most novel high-tech glass product for construction.

The main raw materials of photovoltaic glass include quartz sand, soda ash, limestone, dolomite, sodium nitrate, Glauber's salt, sodium pyroantimonate, aluminum hydroxide, etc. Its production process is mainly divided into two major links: original film production and deep processing. The production of the original sheet is to obtain the untreated semi-finished photovoltaic original sheet after five steps of mixing, melting, calendering, annealing and cutting of raw materials, and then further processing. The deep processing process includes two processes of tempering and coating. The original film is edged and then tempered to obtain a tempered sheet, or tempered + coated to obtain a coated sheet for component packaging.

At present, the mainstream product of photovoltaic glass is low-iron toughened patterned glass (also known as toughened suede glass), with a thickness of 3.2mm or 4mm. In the wavelength range of solar cell spectral response (380~1100nm), the light transmittance can Up to 91%, and has a high reflectivity for infrared light greater than 1200nm. It is made by using a special embossing machine to press a special pyramid-shaped pattern on the surface of ultra-white glass.

The main function of photovoltaic glass is to protect the battery from water vapor erosion, block oxygen to prevent oxidation, high and low temperature resistance, good insulation and aging resistance. It is an important part of solar photovoltaic modules and has important values of protecting cells and light transmission.

The advantages and disadvantages of photovoltaic glass are as follows:

advantage:

Photovoltaic glass can use solar radiation to generate electricity, which is a clean and renewable green energy.

Photovoltaic glass has the functions of protecting batteries from water vapor erosion, blocking oxygen to prevent oxidation, high and low temperature resistance, good insulation and aging resistance.

Photovoltaic glass can improve the light transmittance of glass, increase the transmittance of light, and improve the efficiency of photoelectric conversion.

Photovoltaic glass can save space and be installed on idle roofs or exterior walls without occupying additional land.

Photovoltaic glass can reduce the comprehensive outdoor temperature, reduce the heat gain of the wall and the cooling load of the indoor air conditioner, and play a role in building energy saving.

shortcoming:

Photovoltaic glass is expensive and requires professional installation and maintenance.

The power generation of photovoltaic glass is affected by sunshine conditions and seasonal changes, which is unstable.

Photovoltaic glass may have quality problems such as self-explosion, delamination, blistering, bulging, and yellowing, which affect service life and safety.

Photovoltaic glass needs to be connected to the grid and is restricted by grid policies and prices.