大连化物所开发100千瓦时级钠离子电池系统已并网运行

Core Insights - The Dalian Institute of Chemical Physics of the Chinese Academy of Sciences has developed a 100kWh sodium-ion battery energy storage system, which has been successfully integrated into the grid in Shandong's Binzhou Lingang Chemical Industrial Park [1] Group 1: Technology Development - The sodium-ion battery utilizes phosphate as the positive electrode material, offering advantages such as high power, stability, and safety, making it a preferred choice for energy storage applications [1] - The energy storage system consists of over 1,000 36Ah battery cells integrated into 28 modules, along with a power control module [1] - The system achieved a discharge energy of 120.6kWh under a constant current of 290A, with a direct current energy conversion efficiency exceeding 95% [1] Group 2: Application and Impact - The system, in conjunction with charging stations, forms a "light-storage-charge" system that stores excess electricity during peak solar generation and releases it during evening peak usage, thus reducing electricity costs and addressing grid absorption capacity issues [1] - The implementation of the 100kWh sodium-ion battery system serves as a demonstration of the team's technological reliability across various components, providing a typical case and experience accumulation for the development and promotion of sodium-ion battery technology [1]