Solar laminate: Procedure, Advantages, and Future
Solar panel lamination is critical to the module’s solar cells’ lifespan. Becauseare exposed to and affected by a variety of climatic conditions, encapsulating the solar cells via lamination is a critical step in traditional solar photovoltaic module manufacture.
Solar panels are laminated in the following manner:
Solar lamination is a well-established idea that operates as follows:
Two layers of ethylene-vinyl acetate (EVA) are used in the following sequence to laminate a:
Glass / EVA / Solar Cell Strings / EVA / Tedlar Polyester Tedlar (TPT).
The prepared 5-layer module is placed in the lamination machine and heated to a maximum of 135°C for approximately 22 minutes. The laminate that emerges is totally sealed and, when manufactured properly, protects the solar cells for at least 25 years.
After cooling the laminate, excess EVA and TPT will be removed and the junction box installed. Finally, the laminate is ready for framing.
Advantages of solar lamination
Less Weightful in nature
Solar Laminate strips have the advantage of being substantially lighter than conventional solar panels (2.09kg/m2 vs. 11.36kg/m2). This means that any new or existing roof structure can readily support the weight of a large array.
This is especially true when retrofitting commercial buildings, which may struggle to support the significantly larger weight that a comparably sized array would contribute to the structure.
Due to the strips being flush with the roof surface, they provide exceptional wind resistance. Conventional solar panels are brackets positioned above the roof, allowing wind to enter and apply upward pressure on the underside of the panels, which are over 1.6m in length and 1.6m2 in area.
Because the strips do not require the several penetrations required for conventional panel mounting, there is no risk of water infiltration related to the roof’s solar element when employing Laminates. Additionally, all associated wiring is hidden and protected beneath the ridge or head barge flashings.
Additionally, the use of Laminate strips eliminates any hassles associated with certifying roofing material warranty coverage, which needs regular cleaning of ‘unwashed areas.’ Using conventional solar panels to accomplish this can be challenging at best.
Due to the lack of metal components in the Laminate strip system, such as mounting hardware and panel frames that might build debris, there is a much-reduced danger of corrosion over time. This makes them advantageous in places with a high level of salt exposure.
Besides, Cleaning Laminate strips is as simple as a periodic wash with fresh water and a soft brush.
Solar lamination’s future
Numerous encapsulants are anticipated to supplant the traditional method of laminating. Numerous businesses are continually researching and developing novel methods of enclosing solar panels. Qsolar, a Canadian producer, has dispensed with the traditional lamination technique in favor of a spray machine that evenly distributes an adhesive on the solar panel. The primary advantage of the spray technique is the gentle treatment of the solar cell. However, this is only the beginning; a great deal of innovation aimed at simplifying panel lamination is still in the works.