what is solar panel?

A solar panel is a device that absorbs sunlight and converts solar radiation energy directly or indirectly into electrical energy through the photoelectric effect or photochemical effect. It is one of the important components in the solar power generation system, and the solar cell is the determining factor. Important factors in conversion rate and service life.

Struchure of solar panel

Tempered glass

Its function is to protect the main body of power generation (such as battery cells). There are requirements for the selection of light transmittance. One is that the light transmittance must be high (generally more than 91%), and the other is ultra-white tempered treatment

EVA

It is used to bond and fix tempered glass and the main body of power generation (such as battery cells). The quality of the transparent EVA material directly affects the life of the component. EVA exposed to the air is prone to aging and yellowing, thus affecting the light transmittance of the component, thus affecting the In addition to the quality of EVA itself, the power generation quality of components

Solar cell

The main function is to generate electricity. The mainstream power generation market is crystalline silicon solar cells and thin film solar cells, both of which have their own advantages and disadvantages. Crystalline silicon solar cells have relatively low equipment costs, but high consumption and cell costs. However, the photoelectric conversion efficiency is also high, and they are more suitable for generating electricity under outdoor sunlight.

Junction box

It protects the entire power generation system and acts as a current transfer station. If a component is short-circuited, the junction box automatically disconnects the short-circuited battery string to prevent the entire system from burning out. The most critical thing in the junction box is the selection of diodes. Depending on the type of cells in the module, the corresponding diodes are also different.

Aluminum alloy frame

Protect laminated parts and play a certain sealing and supporting role

Backsheet

The function of the back plate is to seal, insulate and waterproof

Silicone

Sealing function, used to seal the junction between components and aluminum alloy frames, components and junction boxes.

why choose us

13 years manufacturer of solar prodcuts

why choose our products

Qinhuangdao Sufu Electronics Co., Ltd. focuses on the research and development, production and sales of high-efficiency crystalline silicon components, solar application products, solar energy storage batteries and solar power generation systems.

We provide portable power systems, distributed photovoltaic power stations, solar panel accessories and other products to global users.

The company adheres to the business philosophy of "integrity, gratitude, and dedication" and the corporate philosophy of "regarding quality as life and taking integrity as the cornerstone" to comprehensively enhance the core competitiveness of the brand and provide users with excellent products while constantly providing perfect professional services. With excellent pre-sales, in-sales and after-sales services, we have established long-term and stable distribution cooperation relationships with many high-quality customers, and have won a good market reputation and brand influence.

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FAQ

01.How long do solar panels last?

The service life of solar panels is approximately 25 to 30 years. Because the solar panel itself has no moving components, it does not require tedious maintenance during use to maintain good power generation. Although the power generation efficiency of solar panels that are more than 25 years old has declined significantly, they continue to generate electricity and continue to spread the cost of solar power generation.

02.How do solar panels work?

The working principle of solar panels is simple. In short, it is to concentrate light through solar panels. When the sun's rays hit the solar panel, it will generate heat, which will generate electricity. In this way, light energy is converted into heat energy, and heat energy is further converted into electrical energy. Both household solar energy and solar energy used in factories achieve the final electricity conversion through this principle.

How to maintain solar panels in photovoltaic power stations?

1. Keep the lighting surface of the solar panel clean. If there is dust, use a clean wire duster to clean it. If there is dirt that cannot be removed, rinse it with clean water and then wipe it dry with a clean rag. Never clean with corrosive solvents or wipe with hard objects. When there is snow, clean it up in time.
2. Regularly check whether the metal brackets of solar panels are corroded, and paint the brackets regularly for anti-corrosion treatment. The square array bracket must be well grounded.
3. During use, the photoelectric parameters and output power of the solar panels should be tested regularly (such as 1 to 2 months) to ensure the normal operation of the solar panels.
4. During use, the packaging and connection joints of the solar cell modules should be checked regularly (such as 1 to 2 months). If there is any leakage of water in the package, discoloration of the cells, loose joints, disconnection, corrosion, etc., repair them in time. or replace.

Mono&Poly solar panel from 10w to 400w
Flexible solar panel, double glass solar panel OEM
Off-grid solar system&On-grid solar system

We're well-known as one of the leading solar panel manufacturers and suppliers in China, specialized in providing the best customized service. We warmly welcome you to buy or wholesale high quality solar panel for sale here from our factory. For price consultation, contact us.

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