Solar cell module potting compound
A solar cell module is an optoelectronic device with solar cells as the main component. However, due to the defects of the solar cells themselves, exposure to natural conditions such as sunlight and rain can cause permanent damage. Therefore, in order to realize the industrial application of solar power generation, it is necessary to carry out protective encapsulation to form solar cell modules. Specifically, it is protectively cured and encapsulated using an epoxy adhesive with high light transmittance. The process has low cost, simple structure, wide application and unique development advantages.
The main factors affecting the sealing effect are:
Glue ratio, stable and accurate ratio is the basis for the normal curing of two-liquid glue. Only the two-liquid adhesive can be cured within the set time and meet the specified curing requirements, in order to protect the product. If the glue ratio is not accurate, the glue will not be cured, or the curing will be incomplete, which will affect the quality of the product.
In order to mix the glue evenly, use a mixer to mix the glue well. If ordinary manual stirring is not thorough, the component surface will be partially uncured or incompletely cured after sealing.
Glue potting is to apply a layer of glue of about 2 mm on the surface of the solar module to be potted. Component defoaming treatment, the glue may be mixed with air during the stirring process, so after the glue filling is completed, it is necessary to vacuum the workpiece to extract the air bubbles in the glue to ensure the quality of the product. During the glue mixing process, a large number of air bubbles will be generated in the glue mixing, and because the glue has a certain viscosity, the air bubbles are difficult to be discharged, so it is necessary to vacuum defoaming the glue-filled components. Glue curing is the curing of components in a curing oven at a certain temperature and time to form a hard surface to protect the solar cells.
keywords: glue-filling-machineEpoxy-gluedouble-liquid-adhesive
