Application areas of photovoltaic packaging films

Photovoltaic power station

Photovoltaic power plants are one of the most common photovoltaic application areas. Adhesive film packaging is used to protect photovoltaic cells
Cell components, improve their stability and life, thereby increasing the power generation efficiency of photovoltaic power stations.

Building integrated photovoltaics

By integrating photovoltaic modules into the exterior walls, roofs and other parts of the building, the adhesive film not only provides protection
protection, but also ensures transparency, allowing light to penetrate, allowing the building to perform both photovoltaic functions and
It can also maintain a beautiful appearance.

Portable photovoltaic equipment

Film packaging is widely used in solar chargers, mobile power supplies, etc. These devices require Thin, soft adhesive film to ensure device portability and durability.

Agrivoltaic

In the agricultural field, photovoltaic cell modules are often used in irrigation systems, greenhouses, etc. glue Film encapsulation can provide protection in these environments while ensuring light transmission, providing farmers with Industry produces renewable energy.

photovoltaic car

Used in electric vehicles and solar vehicles, the lightness and weather resistance of the film are important for automobiles. The solar charging system on the car surface is crucial.

Household photovoltaic system

In household applications, household photovoltaic systems usually include photovoltaic cell modules, and film encapsulation.It can protect these components and extend their service life.

Manufacturing process of photovoltaic packaging film

Substrate selection

Select a suitable substrate for photovoltaic packaging.

Add additives

Add additives that can improve film performance.

coating

The prepared adhesive film material is applied to the surface of the solar cell chip through a coating machine.

solidify

Usually heat curing or UV curing is used.

Lamination

The cured adhesive film is combined with other components (such as glass, backplane, etc.) through a lamination process
together.

Cut

Cut the photovoltaic encapsulation film to match the size of the photovoltaic cell module.

Testing and quality control

Test the manufactured photovoltaic packaging film to ensure that its performance meets the requirements.

Common photovoltaic packaging film materials

EVA (ethylene vinyl acetate)

EVA is currently one of the most commonly used photovoltaic packaging films. It has good transparency, electricity
It has excellent gas performance and mechanical strength, but is sensitive to moisture and prone to aging.

POE (polyolefin elastomer)

POE is a new type of film material with good moisture resistance and weather resistance.
Gradually it is applied in photovoltaic packaging.

TPU (thermoplastic polyurethane)

TPU is another new type of film material with good flexibility and anti-aging properties.Suitable for some application scenarios with high requirements on adhesive films.

TPT (polyester film)

TPT film has certain advantages over EVA in terms of moisture resistance, but its light transmittance and conductivity Performance is relatively poor.

photovoltaic packaging film Frequently Asked Questions and Solutions

moisture sensitivity

Traditional EVA film easily absorbs moisture, causing the moisture content inside the film to rise and affecting the battery pack.

The stability and life of the parts.

Adding anti-moisture additives can effectively reduce the sensitivity of the film to moisture.

photoaging

Photovoltaic modules are prone to photoaging under long-term sunlight exposure, resulting in the transparency of the film.The performance and mechanical properties are reduced.Adding anti-UV additives can slow down the photoaging process.

Battery thermal runaway

Due to the limited thermal conductivity of the encapsulating film, photovoltaic cells are prone to heat loss in high temperature environments.
control, affecting the stability of the system.
The introduction of high thermal conductivity additives can improve the thermal conductivity of the adhesive film.

Photovoltaic encapsulation film additive is an auxiliary material used in the packaging process of solar photovoltaic cells. It is mainly used to optimize the solar cell encapsulation process and improve the encapsulation efficiency and performance. The addition of appropriate photovoltaic encapsulation film additives (specially applied to the hot melt adhesive of photovoltaic film level) can enhance the success rate of photovoltaic encapsulation film packaging. After adding additives, the adhesion between the film and the solar silicon crystal panel will be effectively improved, thus increasing the yield. Kos photovoltaic packaging film additives with high transparency, low crystal point and other characteristics, high grafting rate, good fluidity, high resistivity, favored by the majority of users!
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