According to the website of the Ministry of Industry and Information Technology, in order to solve the problem of the recycling and utilization of power batteries for new energy vehicles, the Ministry of Industry and Information Technology, in conjunction with relevant departments, organized China Tower Co., Ltd. (hereinafter referred to as "Tower Company") and others to carry out cascade utilization of power batteries in 2018. The role of the main channel for the recycling of power batteries is to strengthen innovation in business model construction, key technology research and development, standard and normative research, and information platform construction. As a large-scale state-owned communication infrastructure comprehensive service enterprise, the Tower Company has 1.9 million base stations and has a large demand for backup power. By promoting the recycling and echelon utilization of decommissioned power batteries, it has realized the power of decommissioning while ensuring the needs of communication services. The centralized utilization and management of storage batteries have achieved remarkable results.
Boldly explore and carry out pilot trials. For a long time, the tower company's base station backup power supply mainly uses lead-acid batteries, and it purchases about 100,000 tons of lead-acid batteries every year. Lead-acid batteries have a short service life, low performance, and contain a large amount of heavy metal lead. If they are discarded, they will cause secondary pollution to the environment if they are not handled properly. To this end, the Tower Company started in 2015 and successively carried out trials to replace lead-acid batteries with batteries in more than 3,000 base stations in 12 provinces and cities, fully verifying the safety and technical and economic feasibility of the use of cascades.
Stop purchasing lead-acid batteries and vigorously promote the cascading use of lithium batteries. The Tower Company accelerated the demonstration and promotion of echelon utilization of base stations. In 2018, it stopped purchasing lead-acid batteries and purchased batteries for echelon utilization in a unified manner. As of the end of 2018, about 120,000 base stations in 31 provinces and cities across the country have used about 1.5GWh of echelon batteries, replacing about 45,000 tons of lead-acid batteries. Tower Company cooperated with 11 automobile manufacturers such as China FAW and SAIC to plan and build recycling channels, and took the lead in implementation in Shanghai, Hubei, Guangdong and other regions; cooperated with recycling companies to optimize the recycling process of decommissioned power batteries to ensure the use of scrapped tiers Centralized recycling and harmless disposal of batteries. At the same time, it is cooperating with China Post, Commercial Bank, State Grid Electric Vehicles and other companies to study the application of cascading batteries in computer room backup power, grid peak and valley filling, new energy power generation and power dynamic expansion, etc., and is under construction in Hexi, Gansu Province The 15MWh photovoltaic power generation elevator utilization project and the 10MWh wind power generation elevator utilization test projects have improved the overall efficiency of the utilization of the elevators.
Strengthen technical cooperation and establish a standard system. The Tower Company promotes industry-university-research cooperation, leading the industry to break through a number of key technologies for echelon utilization such as battery packs and comprehensive capacity evaluation, unify the communication interface and protocol requirements of the battery management system, and promote the intelligentization and standardization of echelon utilization. The company has formed the "Technical Specification for Echelon Battery Products", "Echelon Battery Packaging, Transportation and Storage Control Requirements" and other related technical specifications, and took the lead in formulating the industry standard "Technical Requirements and Test Methods for Echelon Utilization of Vehicle Power Batteries in Communication Base Stations" to fill domestic The communication industry is using blanks in technical specifications for cascading utilization, leading the advancement of cascading utilization technology.
In the process of vigorously promoting the echelon utilization of power batteries, the Tower Company still has some problems. The main reason is that the current amount of decommissioned batteries is relatively small. The downstream enterprises in the industry chain compete for the limited resources of decommissioned batteries, and the procurement price of echelon batteries remains high. At the same time, the industry still has bottlenecks in technologies such as residual value evaluation, and it is urgently needed to use historical data and other information used by power batteries to evaluate the performance of retired power batteries to ensure the safety and reliability of battery products that are screened and reorganized.
The Tower Company has already played an important demonstration role. According to the plan of the Iron Tower Company, it will continue to expand the scale of battery utilization in cascade utilization in 2019. It is estimated that the utilization cascade utilization battery will be about 5GWh, and the replacement of lead-acid batteries will be about 150,000 tons. Build 150 recycling service outlets in 17 provinces, cities, and regions, and develop multiple application modes such as comprehensive solutions for backup power, breakthrough a number of key common technologies such as residual value assessment and rapid detection, and improve and optimize the technical standard specification system.
