Product Specifications

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Product Description

Solar panels are power generation devices that generate direct current when exposed to sunlight and consist of thin-body solid photovoltaic cells made almost entirely of semiconductor materials(such as Silicon).

The photovoltaic system can provide lighting for houses and power the grid. The photovoltaic panel components can be made into different shapes, and the components can be connected to generate more electricity. Both the rooftop and the building surface will use photovoltaic panels and are even used as part of Windows, skylights or shadowing devices. These photovoltaic facilities are often referred to as photovoltaic systems attached to buildings. Monocrystalline Silicon solar cells have a photoelectric conversion efficiency of about 15 % and a maximum of 24 %. This is the most efficient photoelectric conversion of all types of solar cells at present, but the production cost is so large that it can not be widely used. Widely and universally used. Since monocrystalline silicon is generally packaged with tempered glass and waterproof resin, it is durable and has a service life of up to 15 years and a maximum of 25 years.

Polycrystalline silicon solar cells

The production process of polysilicon solar cells is similar to that of monocrystalline Silicon solar cells, but the photoelectric conversion efficiency of polysilicon solar cells is reduced by a lot, and its photoelectric conversion efficiency is about 12 %(July 1, 2004 Sharp's market efficiency is 14.8 % of the world's most efficient polysilicon solar cells). In terms of production costs, it is cheaper than single-crystal Silicon solar cells, materials are simple to manufacture, power consumption is saved, and the total production cost is low, so it has been greatly developed. In addition, polysilicon solar cells have a shorter service life than monocrystalline Silicon solar cells. In terms of performance prices, monocrystalline Silicon solar cells are slightly better.

Solar cell assemblies

1 laminate

2 Aluminum alloy protective laminate, plays a certain role in sealing and supporting

The junction box protects the entire power generation system and acts as a current transfer station. If the component short-circuit junction box automatically disconnects the short-circuit battery string, it will prevent the entire system from being burned. The most important thing in the junction box is the selection of diodes. According to the type of battery piece in the component, the corresponding diodes are also different.

4 Silicone seal for sealing the border between the assembly and aluminum alloy, the assembly and the junction of the junction of the junction of the junction of the junction of the assembly and the junction of the junction. Some companies use double-sided rubber strips and foam cotton to replace the silicone. Silicon gel is commonly used in China. The process is simple, convenient, easy to operate, and The cost is very low.

Layout structure

1 Steeled glass: Its role is to protect the main power generation body(such as batteries). The choice of light transmission is required, and the light transmission rate must be high(generally more than 91 %); Ultra-white steel-treatment.

2 EVA: Used to bind fixed tempered glass and power generation body(such as batteries). The advantages and disadvantages of transparent EVA materials directly affect the lifetime of the component. EVA exposed to air is prone to aging and yellowing, which affects the light transmission rate of the component. Thus, in addition to the quality of the component's power generation, in addition to the quality of the EVA itself, the lamination process of the component manufacturer is also very large. For example, the viscosity of the EVA adhesive is not up to standard, and the bonding strength of the EVA with the tempered glass and the back plate is not enough, all of which will cause EVA. Early aging affects the life of the component.

3 Power generation main body: The main role is to generate electricity. The main market for power generation is crystal silicon solar cells and thin-film solar cells. Each of them has advantages and disadvantages of crystal silicon solar cells. The cost of equipment is relatively low, but the cost of consumption and battery cells is high. However, the photoelectric conversion efficiency is also high. It is more suitable for generating thin-film solar cells in outdoor sunlight. The relative equipment cost is relatively high, but the consumption and battery cost are very low, but the photoelectric conversion efficiency is more than half that of crystal Silicon cells, but the weak light effect is very good. Can generate electricity under normal lights.

4: Backplate action, sealing, insulating, waterproof(usually using TPT, TPE, etc.) material must be resistant to aging, most component manufacturers are quality assurance for 25 years, tempered glass, aluminum alloys are generally no problem, The key is whether the back plate and silicone can meet the requirements. Basic requirements 1. to provide sufficient mechanical strength to enable solar cell assemblies to withstand stresses such as shocks, vibrations, etc., during transport, installation and use, and to withstand the impact of hail; 2, has a good sealability, can prevent wind, water, isolation from the atmosphere under the conditions of corrosion of solar cells; 3, has a good electrical insulation performance; 4, strong anti-ultraviolet ability; 5, the operating voltage and output power are designed according to different requirements, can provide a variety of wiring methods, to meet different voltage, current and power output requirements;

5: The efficiency loss caused by the combination of solar cell chips and parallel combinations is small;

6: Reliable connection of solar cells;

7: Long working life, requiring solar cell components to be able to use for more than 20 years under natural conditions;

8: The packaging cost is as low as possible under the above conditions.

Power calculation

Solar AC power generation system is composed of solar panels, charging controllers, inverters and batteries. Solar DC power generation systems do not include inverters. In order for the solar power system to provide enough power for the load, it is necessary to select the components reasonably according to the power of the electric appliance. Take 100W output power and use 6 hours per day as an example to introduce the calculation method:

1. The number of watt-hours consumed per day(including the loss of the inverter) should first be calculated:

If the conversion efficiency of the inverter is 90 %, when the output power is 100W, the actual output power required should be 100W/90 % = 111W; If you use 5 hours per day, the power consumption is 111W * 5 hours = 555 Wh.

2. Calculate solar panels:

According to the daily effective sunshine time of 6 hours, and taking into account the charging efficiency and loss during the charging process, the output power of the solar panel should be 555 Wh/6h/70 % = 130W. 70 % of this is the actual power used by solar panels during charging.

Supply Ability

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Packaging and Shipping

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Packaging details

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