Custom Solar Panel Construction

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

WSL Solar’s Latest Product – 5W Solar Panel | IoT Solar Panel

5W Solar Panel

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.

Solar Panel Specification

Item No.WSL-C028
Solar Panel Size185x185x15mm
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 TypeMono PERC Solar Cell
Power Tolerance±5%
Encapsulation method3.2mm Tempered glass
Back sheetTPT
Product Warranty5 Years
Lead time25 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. 

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. 

What is PET Solar Panel?

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.

                                                   PET 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.

https://www.wsl-solar.com

Original source: https://www.wsl-solar.com/Product_News/2022/0411/what-is-PET-solar-panel.html

IoT Solar Panel, 4W 5V

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.

IoT Solar Panel



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

Solar Panel Specification

Item No.WSL-C027
Solar Panel Size250x97x4.5mm
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 TypeMonocrystalline PERC Solar Cell
Power Tolerance±5%
Encapsulation method3.2mm Tempered glass
Back sheetTPT
Product Warranty5 Years
Lead time25 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