solar PV Encapsulant Film
Under the background of global climate warming and the increasing depletion of fossil energy, the development and utilization of renewable energy has received increasing attention. Among various renewable energy sources, solar energy has developed rapidly due to its significant advantages such as cleanness, safety, inexhaustible supply, and inexhaustibility. The core part of the solar power generation system is the photovoltaic module. I believe that many friends have installed photovoltaic power generation devices in their homes. This device, which was once only found on spacecraft or satellites, has gradually entered the homes of ordinary people, and its mysterious veil has gradually been unveiled. open.
The function of photovoltaic modules is to convert solar energy into electrical energy. It is composed of three parts: high-transmission tempered glass, high-transmission adhesive film, and silicon crystal panels. The photovoltaic packaging film accounts for a very low proportion of the total cost of photovoltaic modules. However, it affects the quality of battery packaging, power generation efficiency, service life and other key factors.
Types of photovoltaic encapsulation films
Photovoltaic packaging films are mainly divided into two categories: EVA film and POE film. Both types of films have their own advantages and disadvantages.
The main component of EVA film is EVA, supplemented by various additives, such as cross-linking agents, thickeners, etc. It has the advantages of excellent packaging performance and low price, so it has been the preferred material for photovoltaic module packaging. However, its PID defect (potential potential induced decay) is also obvious, so its lifespan is relatively short.
POE film is a high-efficiency, high-reliability photovoltaic module encapsulation film with excellent water vapor barrier ability, ion barrier ability and anti-aging performance. It is the mainstream material for double-glass modules. But its processability is slightly weaker.
In the competition between these two types of adhesive films, many manufacturers have begun to use the EVA+POE combined packaging method for assembly, and this new method has become the choice of more and more users.
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The role of photovoltaic packaging film additives
However, no matter which method is chosen, it should be noted that in order to enhance the success rate of photovoltaic packaging film packaging, we must add appropriate photovoltaic packaging film additives (specially applied to photovoltaic film-level hot melt adhesives).
The adhesion between photovoltaic packaging films and solar silicon crystal panels has a great impact on the yield of photovoltaic panels. The key step to achieve this adhesion is to add photovoltaic packaging film additives. After adding additives, the adhesion between the film and the solar silicon crystal panel will be effectively improved, thereby improving the yield.
COACE is committed to the R&D, production and service of photovoltaic packaging film additives, and has a R&D team led by several senior engineers and doctors. COACES photovoltaic packaging film additives have the characteristics of high transparency, low crystal point, high grafting rate, good fluidity and high resistivity, and are favored by the majority of users!
