Solar Panel Production Equipment - Vacuum Laminator

The working principles of vacuum laminator

Vacuum laminator, as the name suggests, is a mechanical equipment that compresses multiple layers of materials together.

The vacuum laminator is a mechanical equipment that compresses multiple layers of materials under vacuum conditions.

The vacuum laminator is applied to the solar cell assembly production line. We call it the solar cell panel vacuum laminator. Regardless of which operation the vacuum laminator is applied to, the working principle is the same, that is to apply a certain pressure on the surface of multiple layers of materials and tightly compress these materials together. The difference lies in the different conditions for compression according to the purpose of lamination.

The role of vacuum laminator in the production of solar cells

The process flow of the solar cell panel assembly production line is as follows:

Front End - Laying - Laminating - Curing - Frame Assembly - Testing

The purpose of the process is: Raw Materials - Panel - Finishing

The solar cell panel vacuum laminator is the key equipment to achieve the transition from raw materials to solar cell panels.

Before laminating, from the laying process, we can see the material composition of the solar cell panel (using ordinary modules as an example):

• Glass

• EVA
  

• Connected monocrystalline cells
  

• EVA
  

• Backplate
  

The role of the vacuum laminator is to compress these materials together and require the following goals to be achieved after compression:

• No bubbles (<2);

• The fused materials must be integrated;
  

• There must be a certain bonding strength between the incompatible materials.
  

To achieve these three goals, the following conditions must be met:

Pressure, temperature, vacuum degree, and time are the necessary conditions for producing solar cell panels with vacuum laminators.

Definition: The vacuum laminator for solar cell components is a laminating equipment that meets all of the above four conditions.

The structure of vacuum laminator

Composition: Structural part + Temperature control part + Power system + Vacuum system + Control part, a total of 5 parts. Only the structure part is introduced here:

The solar cell panel vacuum laminator structure can be divided into upper chamber vacuum, lower chamber vacuum, upper cover, lower box, rack, a total of 6 parts.

The operation process of each structural part in the production of solar cell panels:

Open the lid - vacuum the upper chamber - put in the components to be pressed - close the lid - evacuate the lower chamber - inflate the upper chamber (lamination) - evacuate the lower chamber - open the lid - remove the cell plate.

The important parameters of vacuum laminator

• Main material: aluminum alloy or stainless steel. It is not recommended to use ordinary steel.

• Vacuum pumping rate.
  

• Temperature control accuracy.
  

• Temperature uniformity.
  

• Lamination height.
  

• How to open.
  

• Total power consumption.