Of all parts of a solar panel, the back sheet plays the most important role in preventing overheating. This sheet connects the back of a solar panel to the mounting surface and ensures the system's structural integrity. It also shields panels from moisture and insulates the solar module so that the cells last as long as possible.
The outer layer of a solar panel that serves as the primary defense for solar module components, particularly the solar cells, is known as a solar backsheet. It works by safeguarding solar panels against different and severe environmental conditions, UV radiation, moisture, dust, etc., throughout their lifespan.
Each of these solar panel parts plays an essential role in the systems. Let’s take a closer look: Solar cells are the main components of a solar panel. Also known as photovoltaic (PV) cells, they are made up of a semiconducting material, often silicon. They do not trigger chemical reactions like batteries and do not require fuel to create energy.
A photovoltaic system consists of one or more solar panels, an inverter that converts DC electricity to alternating current (AC) electricity, and sometimes other components such as controllers, meters, and trackers. Most panels are in solar farms or rooftop solar panels which supply the electricity grid
This sheet connects the back of a solar panel to the mounting surface and ensures the system's structural integrity. It also shields panels from moisture and insulates the solar module so that the cells last as long as possible. The frame holds the laminated solar cells in place.
Solar cells serve as the fundamental building blocks of solar panels. Numerous solar cells are combined to create a single solar panel. These solar cells are interconnected through processes such as soldering, encapsulation, mounting onto a metal frame, and testing.
The junction box, located on the back of the solar panel, houses the electrical connections and serves as a point for external wiring to connect to the panel. It often includes bypass diodes to manage shading issues and protect the PV cells.