Main-grid-free battery piece, manufacturing method thereof and photovoltaic module

• Main Authors: ZHANG RUI, ZHENG ANQI, HUANG CHANGGENG, LIU YUNLEI, LYU SHALI
• Format: Patent
• Language: Chinese; English
• Published: 04.07.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; SEMICONDUCTOR DEVICES

The invention discloses a main-grid-free battery piece and a manufacturing method thereof, and a photovoltaic module, the main-grid-free battery piece comprises a battery piece body, and the surface of the battery piece body is provided with fine grids; each welding strip is composed of a wire and a conductive coating wrapping the wire, and the melting point of the conductive coating is smaller than the lamination temperature; the plurality of welding strips stretch across the surface of the battery piece body and are crossed with the fine grids, fixing glue is arranged on the sides, deviating from the surface of the battery piece body, of the welding strips at the crossed positions of the welding strips and the fine grids, and the fixing glue is bonded with the battery piece body to enable the welding strips to be in contact with the fine grids. The welding strips with smaller diameters can be adopted, and meanwhile, the number of the welding strips can be increased, so that the power of the photovoltaic mod