The first layer of material in the solar cell module structure, toughened glass, can effectively protect the panels and solar cells and 8mm solar cable from the effects of physical stress, snow, wind, dust and moisture, while ensuring that sunlight can shine in.
Double-glass photovoltaic module refers to the photovoltaic cell module formed by a composite layer composed of two pieces of glass and solar cells. The cells are connected to the lead end by wire series and parallel connections. Existing glass solar panels are usually protected by an opaque sheet, called a backplane. The entire structure is held in place by an aluminum frame structure that provides strength during installation and prevents accidents and misoperations. In other words, the double glass PV module is a glass retrofit to the existing solar panel.
Advantages and disadvantages of dual-glass PV modules and existing glass solar panels:
With conventional solar panels, when the snow thickens or when people step on it (during installation), the solar cell can significantly bend, which can lead to microcracks in the cell. Due to the increased strength brought by the two layers of glass, the deformation of the solar cell will be greatly reduced, and the possibility of forming microcracks in the solar cell will be greatly reduced. In contrast to the plastic backboard (the backboard material for single-pane glass solar panels), glass is nonreactive. This means that the overall structure of the dual-glass solar cell module (two layers of glass with one layer of solar cell in the middle) is highly resistant to chemical reactions, such as overall corrosion.
But compared with traditional solar panels, the cost of dual-glass photovoltaic modules is higher, not only the price, but also the cost of bad. Dual-glass PV modules are particularly prone to bubbles when laminated. Because both sides are glass, fixation is more difficult, the inside of the solid glue after the high temperature of the laminator, into liquid, easy to slide, displacement phenomenon. Secondly, the weight of the double glass photovoltaic module is higher than that of the single glass module, so the weight has requirements, then this is also a fatal injury.