1. Look carefully at the surface Tempered glass Surface In order to increase production speed, small manufacturers generally do not worry about droplets accidentally falling. on the surface of the tempered glass. If it is not cleaned, the power generation efficiency of the battery panel will be reduced.
2. Look at the battery cells. Many irregular manufacturers use broken battery cells to assemble them into seemingly complete cells for soldering. This may not be obvious at first, but. the splicing process The battery slices are easily disconnected later, affecting the use of the entire battery panel.
3. Look at the back to see how well the pressure is on the back and whether there are any irregularities after the pressure, such as bubbles, wrinkles, etc.
No.
EVA is usedfor bonding and fixing tempered glass and main power generation body (such as battery cells). The quality of the transparent EVA material directly affects the service life of the EVA component. exposed to air is prone to aging and degeneration, thereby affecting the light transmission of the module, thereby affecting the power generation quality of the module. In addition to the quality of the EVA itself, the module manufacturer's lamination process also has. a big impact. For example, the EVA bonding degree does not meet the standards, and EVA and tempered glass, backplane Insufficient bonding strength will cause EVA to prematurely age and affect the service life of the components.