What is a double-sided double-glass module?

As the name implies, bifacial modules are modules that can generate electricity on both sides. When the sun shines on the bifacial module, part of the light will be reflected by the surrounding environment to the back of the bifacial module, and this part of the light can be absorbed by the cell, thus making a certain contribution to the photocurrent and efficiency of the cell.

Double-sided battery technology

Compared with conventional monocrystalline cells, double-sided photovoltaic modules can generate electricity under direct sunlight on the front and reflected sunlight on the back.

Double-sided double-glass module

According to the packaging technology of double-sided cells, it can be divided into double-sided double-glass components and double-sided (with frame) components. The structure of double-sided double-glass components includes: double-layer glass + frameless structure; double-sided (with frame) components adopt Transparent back panel + frame form, etc. The double-glass bifacial module with mainstream structure has the advantages of long life cycle, low attenuation rate, weather resistance, high fire rating, good heat dissipation, good insulation, easy cleaning, and higher power generation efficiency.

Influencing factors of power generation gain

The most important factors for the power generation gain of bifacial modules are: the surface reflectivity and the installation height of the modules. The sun's direct radiation and scattered light will be reflected after reaching the ground, and some will be reflected to the back of the module.

I believe that after seeing this, everyone has a certain understanding of double-sided double-glass modules, and compared with conventional single-crystal modules, double-sided double-glass modules have the following advantages:

Function level: longer life cycle

PERC double-glass double-sided modules integrate the anti-PID characteristics of double-glass modules, and have the advantages of being suitable for harsh environments and 1500V high-efficiency and low-cost systems. The average attenuation is lower than ordinary modules, so the service life is longer.

In addition to attenuation, low-light and temperature characteristics of components are also critical.

Weak light performance: Excellent low-irradiation performance, allowing the power station to work earlier and stop working later, thereby increasing the power generation gain.

Temperature characteristics: The glass structure of the double-glass double-sided module is more wear-resistant and corrosion-resistant, and the water permeability is almost zero. Various application environments such as deserts and seasides.