At the NEC2025 International Solar Photovoltaic and Smart Energy Conference, silicon wafer manufacturers such as Longi Green Energy, TCL Zhonghuan, and Gaoce Co., Ltd. showcased numerous innovative technologies, covering aspects such as silicon wafer production equipment, cutting consumables, silicon wafer products themselves, and intelligent management systems. The following is a detailed introduction:Longi Green EnergyCrystalline silicon-perovskite tandem cell technology: Certified by the National Renewable Energy Laboratory (NREL) of the United States, the large-area (260.9cm²) crystalline silicon-perovskite two-end tandem solar cells independently developed by it have a conversion efficiency of 33%, setting a new global record for the efficiency of large-area tandem cells. Through material innovation and structural optimization, high efficiency is achieved in an ultra-large size, opening up a new path for reducing the cost of photovoltaic power generation.BC battery technology: T...

As the core raw material for photovoltaic cells and semiconductor devices, the quality of after-sales service for silicon wafers directly affects the production efficiency and cost control of downstream enterprises. There are differences in after-sales service systems among silicon wafer manufacturers of different scales and technical levels, but a relatively standardized service framework has been formed within the industry. The following analysis is conducted from the dimensions of service content, service model, industry status quo and improvement direction:I. Core Contents of After-sales Service for Silicon Wafer ManufacturersTechnical support servicesProduct Application guidanceProvide customers with technical parameter suggestions for processes such as silicon wafer cutting, cleaning, and fuzz making (such as the cutting thickness tolerance of photovoltaic silicon wafers and the flatness requirements of semiconductor silicon wafers), and assist in optimizing the production p...

The combination of photovoltaic cells and energy storage systems is a key technical approach to addressing the intermittency of photovoltaic power generation and enhancing energy utilization efficiency. The integration of the two can be carried out from multiple dimensions such as system architecture, technical logic, and application scenarios. The following is a specific analysis:I. System Integration Architecture: From energy flow to device connection1. Physical connection methodDirect Current CouplingTechnical logic: The direct current (DC) generated by photovoltaic cells is directly connected to the battery management system (BMS) of the energy storage system, without the need for an inverter to convert it into alternating current (AC), resulting in higher energy conversion efficiency (reducing AC/DC conversion losses and increasing efficiency by approximately 5% to 10%).Equipment composition: Photovoltaic array →DC-DC converter → energy storage battery → bidirectional...