Many thanks to our employees for their hard work. Pay attention to every detail in the production process, such as wire welding, silicone molding, EL testing, measuring dimensions, etc. It is because of their carefulness and hard work that we can produce high quality solar panels.
WSL Solar has been a quality and professional manufacturer of custom solar panels, solar mini panels, IoT solar panels and solar solution provider in China since 2006.
Photovoltaic glass is a special type of glass that converts sunlight into electricity by encapsulating solar cell modules in layers of glass. Usually low-iron tempered glass or double-layer glass is used, and the surface is coated with anti-reflection coating and transparent conductive layer.
Float glass is a common glass manufacturing process. In the production process, glass raw materials (such as silica sand, sodium carbonate, limestone, etc.) are melted, flowed out evenly from the top of the glass melting bath, and solidified into thin flake glass after cooling. This technique produces high-quality, uniform-thickness glass for a wide variety of applications.
The difference between photovoltaic glass and float glass is mainly reflected in the following aspects:
Different uses: Photovoltaic glass is mainly used in the manufacture of solar panels, while float glass is widely used in construction, automobiles and other fields;
Different materials: Photovoltaic glass usually uses special materials such as low-iron tempered glass or double-layer glass, while float glass is produced by using ordinary glass raw materials through special processes;
The manufacturing method is different: photovoltaic glass needs to be coated with anti-reflection coating and transparent conductive layer on the surface, and the solar cell module is encapsulated in it. Float glass, on the other hand, is made from thin sheets of glass by melting the raw material.
Different performance requirements: Photovoltaic glass needs to have certain special properties such as transmittance, reflectivity and wind pressure resistance, while float glass mainly requires uniform thickness, high strength and light transmission performance.
WSL Solar has been a quality and professional manufacturer of custom solar panels, solar mini panels, IoT solar panels and solar solution provider in China since 2006.
https://www.wsl-solar.com
Considering factors such as conversion efficiency of solar panels, technical level, maturity of production process, market share, etc., for large-scale grid-connected photovoltaic power plants, the types of solar panels currently commonly used can be roughly divided into crystalline silicon solar panels and amorphous silicon solar panels. Crystalline silicon solar panels are further divided into monocrystalline silicon solar panels and polycrystalline silicon solar panels. Amorphous silicon solar panels are mainly thin-film solar panels. The following is a brief analysis of the conversion efficiency of various photovoltaic solar panels:
1. Monocrystalline silicon solar panels
Monocrystalline solar panels are the most common high-efficiency solar panels on the market today. The production process and technological breakthroughs of the single crystal industry chain determine that it has a more perfect crystal lattice, can better absorb light, and has a higher conversion efficiency. For monocrystalline solar panels, the efficiency of PERC high-efficiency monocrystalline solar cells has exceeded 23%, setting a world record. The conversion efficiency of ordinary monocrystalline solar cells is also above 19%, which is the highest photoelectric conversion efficiency among all types of solar cells.
With the continuous maturity of technology, the price of monocrystalline solar panels is almost the same as that of polycrystalline. Because monocrystalline silicon is generally encapsulated with tempered glass and waterproof resin, it is durable and its service life can generally reach 20 years, and the maximum can reach 30 years.
2. Polycrystalline silicon solar panels
Compared with monocrystalline solar cells, the silicon wafer of polycrystalline solar cells is a combination of multiple tiny single crystals, with a large number of grain boundaries in the middle, including many defects. It is actually a minority carrier recombination center, thus reducing the polycrystalline silicon. At present, the conversion efficiency of polycrystalline solar cells is about 18%-20%.
3. Thin film solar panels
After several years of rapid development, the laboratory efficiency of single-junction amorphous silicon thin-film solar cells can reach about 12.7%, and the laboratory efficiency of microcrystalline silicon multi-junction solar cells can reach 13.4%. The laboratory photoelectric conversion efficiency of solar cells can reach 16%, and the average efficiency of commercial solar cells is 8%-10%. The conversion efficiency of copper indium gallium selenide can reach 14%.
However, compared with crystalline silicon solar panels, the main problem of thin-film solar panels is the low photoelectric conversion efficiency, and the area of thin-film solar panels required to convert the same amount of electric energy is huge. In addition, thin-film solar panels also have the disadvantage of poor stability, and their energy conversion efficiency changes with the prolongation of irradiation time. These shortcomings are the biggest obstacles to the wide application of thin-film solar panels.
From the analysis of the conversion efficiency of the above three types of photovoltaic solar panels, it is not difficult to see that the conversion efficiency of crystalline silicon solar panels is significantly higher and more stable than that of thin-film solar panels. Monocrystalline silicon solar panels have significantly higher conversion efficiency and are more stable than polycrystalline silicon solar panels. For the selection of photovoltaic power plant components, it should be combined with the specific conditions of the project, and the corresponding technical and economic comparison analysis should be carried out to finally determine the best solar panel selection suitable for the photovoltaic power plant.
WSL Solar has been a quality and professional manufacturer of custom solar panels, solar mini panels, IoT solar panels and solar solution provider in China since 2006.
https://www.wsl-solar.com
Key Features:
– Utilize high efficiency mono PERC solar cell, up to 22.5% efficiency
– Laminated by tempered glass, rigid, durable and long lasting
– Waterproof, scratch resistant, and UV resistant
– Customized solar panels for industrial use
Description:
5V 3W Solar Panel
This custom shaped 3w solar panel utilizes high efficiency mono PERC solar cells with efficiency up to 22.5%, to ensure its high output. It is laminated by tempered glass to protect the solar cells inside, making it rigid, durable and long lasting. This rigid solar panel is waterproof, scratch resistant, and UV resistant, specially designed for long term outdoor use in any challenging condition.
Applications:
Tempered glass solar panels are widely used in IoT applications, marine buoys, wireless sensors, traffic warning devise, GPS devices, asset tracking, electric fence chargers, outdoor lighting systems, weather monitoring systems etc.
| Item No. | WSL-C029 |
| Solar Panel Size | 155x155x4.5mm |
| Peak Power (Pmax) | 3.2W |
| Voltage at Pmax (Vmp) | 5V |
| Current at Pmax (Imp) | 640mA |
| Open Circuit Voltage (Voc) | 6V |
| Short Circuit Current (Isc) | 704mA |
| Solar Cell Type | Mono PERC Solar Cell |
| Power Tolerance | ±5% |
| Encapsulation method | 3.2mm Tempered glass |
| Back sheet | TPT |
| Product Warranty | 5 Years |
| Lead time | 25 Days |
| Storage temperature | -40°C ~ 85°C |
| Working temperature | -40°C ~ 85°C |
| Standard Test Conditions (STC) | 1000W/m2, 1.5AM, 25°C Cell temperature |
Click here to watch the video of this type of custom solar panels.
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WSL Solar has been a quality and professional manufacturer of custom solar panels and solar solution provider in China since 2006.
Source of origin: https://www.wsl-solar.com/3w-solar-panel.html
The construction of custom solar panels varies slightly depending on the lamination method and the materials used. The following is a brief introduction to the construction of tempered glass solar panels and ETFE solar panels.
1. Solar Panel Construction of Tempered Glass Solar Panels
Tempered Glass / EVA / Solar Cell / EVA / Backsheet
2. Solar Panel Construction of ETFE Solar Panels
ETFE film / EVA / Solar Cell / PCB
Tempered glass:
The role of tempered glass is to protect the solar cells, the selected photovoltaic glass must have high light transmittance (generally more than 91%), and requires ultra-white tempering treatment. The thickness of photovoltaic glass is either 3.2mm or 2.0mm. The most commonly used is the 3.2mm thick glass.
EVA:
EVA is an important encapsulant material, which is used to bond tempered glass and solar cells. It is usually cut into a thin sheet that can be inserted at the front and rear of the solar cells. The quality of transparent EVA material directly affects the lifespan of the solar panel. Should EVA be exposed to the air, it will easily age and turn yellow, thus affecting the light transmittance of the solar panel, and power generation quality.
The thickness of EVA ranges from 3mm to 4.5mm; among them, 4mm and 4.5mm are used the most.
Solar Cell:
Solar cells convert sunlight into electricity via the photovoltaic effect. They are the core parts of solar panels. Generally speaking, the power of a solar panel is proportional to the area of the solar cell.
Backsheet
The function of the backsheet is to seal, insulate and waterproof. Therefore, the selected backsheet materials such as TPT and TPE must be resistant to aging.
The backsheet is available in white and black. The white backsheet is commonly used, but some clients choose to use the black backsheet in order to maintain the color consistency with the application product and to be aesthetically pleasing.
ETFE Film:
ETFE film is a film used to protect solar cells inside solar panels. Its thickness is usually less than 0.2mm, making it thin and light. In addition, it has the characteristics of resistance to temperature changes, high light transmittance of up to 95%, high self-cleaning, corrosion resistance, and long service life.
IBC Solar Cell
ETFE solar panels adopt IBC solar cells (interdigitated back contact) with efficiency up to 24%, to achieve a higher power output in a limited area. Traditional solar cells achieve energy conversion by having front contacts in the cell, while IBC solar cells have the contacts on the rear side, instead of placing them in the front of the cell. This allows them to achieve higher efficiency due to reduced shading on the front of the cell, and also increases the aesthetics since no contacts are visible on the front. IBC solar cell technology also improves the temperature coefficient, which means an IBC solar panel can deliver a better performance in hot climate installations. It also has excellent performance under low light conditions.
WSL Solar has been a quality and professional manufacturer of custom solar panels, solar mini panels, IoT solar panels and solar solution provider in China since 2006.
https://www.wsl-solar.com
Source of origin: https://www.wsl-solar.com/Product_News/2022/1212/Custom-Solar-Panel-Construction.html
Quality is of paramount importance to us. To deliver outstanding quality solar panels while meeting highly customized demands for solar applications is the most import thing to us. From the selection of raw materials, through the process of manufacturing, to packaging and transportation; quality control is strictly implemented.
At WSL Solar facility, in-process inspection is an overall effort performed at each stage of solar panel manufacturing. We will conduct 100% visual inspection and performance tests of all custom solar panels before packaging and shipping.
This 5v 5w solar panel utilizes high efficiency mono PERC solar cells with efficiency up to 22.5%, to ensure its high output. It is laminated by tempered glass to protect the solar cells inside, making it rigid, durable and long lasting. This IoT solar panel is waterproof, scratch resistant, and UV resistant, specially designed for long term outdoor use in any challenging condition.
Key Features:
– Utilize high efficiency mono PERC solar cell, up to 22.5% efficiency
– Laminated by tempered glass, rigid, durable and long lasting
– Waterproof, scratch resistant, and UV resistant
– Customized solar panels for industrial use
Applications:
Tempered glass solar panels are widely used in IoT applications, marine buoys, wireless sensors, traffic warning devise, GPS devices, asset tracking, electric fence chargers, outdoor lighting systems, weather monitoring systems etc.
| Item No. | WSL-C028 |
| Solar Panel Size | 185x185x15mm |
| Peak Power (Pmax) | 5.5W |
| Voltage at Pmax (Vmp) | 5.5V |
| Current at Pmax (Imp) | 1A |
| Open Circuit Voltage (Voc) | 6.6V |
| Short Circuit Current (Isc) | 1.1A |
| Solar Cell Type | Mono PERC Solar Cell |
| Power Tolerance | ±5% |
| Encapsulation method | 3.2mm Tempered glass |
| Back sheet | TPT |
| Product Warranty | 5 Years |
| Lead time | 25 Days |
| Storage temperature | -40°C ~ 85°C |
| Working temperature | -40°C ~ 85°C |
| Standard Test Conditions (STC) | 1000W/m2, 1.5AM, 25°C Cell temperature |
Click here to watch the video of this type of custom solar panels.
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5V Solar Panels | 6V Solar Panels | 9V Solar Panels
WSL Solar has been a quality and professional manufacturer of custom solar panels and solar solution provider in China since 2006.
This 6v 1.2w IBC solar panel is built with the super high efficiency back contact solar cell (IBC solar cell). It is laminated by PET film, which is light weight and thin. This 6 volt solar panel is great for charging your 3.7-volt DC batteries and ideal for use in off grid applications such as IoT applications, wireless sensors etc.
Features:
– IBC solar cell with efficiencies of up to 23% guarantee high power output
– Matte finish and no busbar on panel surface
– PET laminated, light weight and thin
– Waterproof, scratch resistant & UV resistant
– Excellent performance under low light environments
– Custom manufacturing in various size & shapes available
Solar Panel Specification
| Item No. | WSL-S001 |
| Solar Panel Size | 85x85x1.8mm |
| Peak Power (Pmax) | 1.2W |
| Voltage at Pmax (Vmp) | 6V |
| Current at Pmax (Imp) | 200mA |
| Open Circuit Voltage (Voc) | 7.2V |
| Short Circuit Current (Isc) | 220mA |
| Solar Cell Type | High Efficiency IBC Solar Cell |
| Power Tolerance | ±5% |
| Encapsulation method | PET Film |
| Back Sheet | Double-sided FR4 PCB |
| Product Warranty | 2 Years |
| Lead time | 20 Days |
| Storage temperature | -20°C ~ 45°C |
| Working temperature | -40°C ~ 65°C |
| Standard Test Conditions (STC) | 1000W/m2, 1.5AM, 25°C Cell temperature |
Click here to watch the video of this type of custom solar panels.
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WSL Solar has been a quality and professional manufacturer of custom solar panels and solar solution provider in China since 2006.
PET Solar Panel means that the top layer of encapsulated material is PET film, which is a plastic film with a light transmittance of about 85%. Its surface can look shiny without any treatment, and if it is sprayed with a layer of frosted, it will look matte and a little rough to the touch.
PET solar panels are customized products with small sizes or low power output. The product structure is PET Film + EVA + Solar Cells + EVA or not + PCB. The solar cells are cut into small pieces by a laser machine, and the voltage and the electric current can be done as per the requirements, and then the single-layer transparent PET, EVA, solar cells, EVA, PCB backplanes are sequentially placed in a solar laminator for lamination. After about 20 minutes, take it out and then stick a soft and transparent protective film on the surface of the solar panel.
What are the advantages of PET solar panels?
1. It is suitable for the production of solar modules of various sizes and different voltages and currents to meet different application scenarios.
2. Quality standards are lower than glass laminated solar panel.
3. Short lamination time and high production efficiency.
4. Low cost.
What are the disadvantages of PET solar panels?
1. Long-term exposure to the outdoors will make the PET film hard, brittle, and discolored, reducing the light transmittance of the solar panel, and at the same time, it can’t well protect the PV cells inside to avoid oxidation and corrosion. If the surface is frosted, this layer of frosted will start to fall off and become very ugly after about 0.5 years.
2. Because the lamination time is not enough, the cross-linking degree of the entire solar panel will not meet the requirements.
3. It can’t resist the relatively large impact from the outside.
What are the applications of PET solar panels?
Used for solar lawn lights, solar wall lights, solar handicrafts, solar toys, solar radios, solar flashlights, solar mobile phone chargers, solar small water pumps, solar home/office power supplies and portable mobile power systems and other products.
It is not recommended to use PET solar panels that need to be placed outdoors for a long time and have a life expectancy of more than 2 years.
WSL Solar has been a quality and professional manufacturer of custom solar panels, solar mini panels, IoT solar panels and solar solution provider in China since 2006.
Original source: https://www.wsl-solar.com/Product_News/2022/0411/what-is-PET-solar-panel.html
WSL Solar’s 4W 5V IoT solar panel is built with the latest monocrystalline PERC solar cell. It is laminated by tempered glass, which is durable and robust. This custom solar panel is ideal for use in off grid applications such as IoT devices, solar powered LED lightings, solar traffic signs, small solar powered systems etc.
Features:
– With latest high efficiency monocrystalline PERC solar cell
– Positive power tolerance
– Tempered glass laminated, high transmission, durable & robust
– Withstanding challenging environmental conditions
– Waterproof, scratch resistant & UV resistant
– Excellent performance under low light environments
| Item No. | WSL-C027 |
| Solar Panel Size | 250x97x4.5mm |
| Peak Power (Pmax) | 4W |
| Voltage at Pmax (Vmp) | 5V |
| Current at Pmax (Imp) | 0.8A |
| Open Circuit Voltage (Voc) | 6V |
| Short Circuit Current (Isc) | 0.88A |
| Solar Cell Type | Monocrystalline PERC Solar Cell |
| Power Tolerance | ±5% |
| Encapsulation method | 3.2mm Tempered glass |
| Back sheet | TPT |
| Product Warranty | 5 Years |
| Lead time | 25 Days |
| Storage temperature | -20°C ~ 65°C |
| Working temperature | -40°C ~ 85°C |
| Standard Test Conditions (STC) | 1000W/m2, 1.5AM, 25°C Cell temperature |
Click here to watch the video of this type of custom solar panels.
View More Custom Solar Panels
5V Solar Panels | 6V Solar Panels | 9V Solar Panels
WSL Solar has been a quality and professional manufacturer of custom solar panels and solar solution provider in China since 2006.
Source of origin: https://www.wsl-solar.com/iot-solar-panel.html
Custom Solar Panel 