The solar cell components of packaging process?
the quality of the packaging process directly determines the quality of parts and components, including its life, impact resistant ability, especially the attenuation rate, and the key quality index is customer concern, because it is directly related to customer returns, so the packaging process on the meaning of the enterprise is self-evident.
cell sorting: solar cell production line has a strong randomness, the battery performance are also different. Therefore, in order to effectively combine with a consistent performance or similar performance of battery, should be classified according to their performance parameters; Battery test that is, by testing the battery output parameters ( Current and voltage) Classify it. In order to improve the utilization rate of the battery and produce qualified battery components.
one side welding: bus-bar welding in the battery positive ( Cathode) The main gate online. Bus-bar for tin plating copper strip, electrode length is about twice the cell edge length. Additional electrodes in welding on the back with the back of the cell electrodes on the back.
line welding, after welding is n battery string together, forming a series of components. Positioning mainly based on the diaphragm of the battery. Operators use welding iron and Hanxisi welding single battery electrode (before Cathode) To & other; After the battery & throughout; After the electrode ( The anode) , make n pieces of string together, in turn, the component list of the positive and negative lead wire on the welding. :
stack at the back in series connection and after verification, according to certain level laying component series, glass and cut EVA, and ready to laminate. When installation should guarantee the battery string, glass and other materials of the relative position, adjust the distance between the battery and to lay a good foundation for the lamination. Laying level: : at the bottom of the glass, EVA, batteries, EVA, glass fiber, floor) 。
element laminated: laying good battery to be included in the laminating machine, through the air to the vacuum components, and then heating to make EVA melt, will the battery, glass and back together, component cooling. Laminating process is a critical step in component production, laminating temperature laminating time is decided by the properties of the EVA. When we use Foster, EVA, laminating cycle time is about 17 minutes. Laminating temperature is 142 ℃.
trimming: when laminating, EVA for melting solidification outward pressure, should be cleared after laminated. Framework: similar to install glass frame; For the glass component installation aluminum frame, increase strength of component, further sealed battery components, extend battery life. Clearance between frame and glass components with silicon resin filling. Edges are connected by a horn button. Connection box: the component on the back of the place to connect a terminal box, lead to facilitate the battery and other equipment or the connection between the battery.