According to the website of the Ministry of Industry and Information Technology, in order to solve the problem of recycling and utilization of new energy vehicle power batteries, the Ministry of Industry and Information Technology, in conjunction with relevant departments, organized China Railway Tower Co., Ltd. (hereinafter referred to as “Iron Tower Company”) to carry out the use of power battery ladders in 2018. The main role of power battery recycling and utilization is to strengthen innovation in business model construction, key technology research and development, standard specification research and information platform construction. As a state-owned large-scale communication infrastructure comprehensive service enterprise, the company has 1.9 million base stations and has a large demand for backup power. By promoting the recycling and utilization of decommissioned power batteries, the company has realized the retiring power while ensuring the needs of communication services. The centralized utilization and control of the battery have achieved remarkable results.
Boldly explore and conduct pilot experiments. For a long time, the base station backup power supply of the company has mainly used lead-acid batteries, and it purchases about 100,000 tons of lead-acid batteries every year. Lead-acid batteries have shortcomings such as short service life, low performance, and a large amount of heavy metal lead. If they are disposed of improperly, they will cause secondary pollution to the environment. To this end, the company started in 2015, and successively used the battery replacement of lead-acid batteries in more than 3,000 base stations in 12 provinces and cities, which fully verified the safety of the use of the ladder and the technical and economic feasibility.
Stop purchasing lead-acid batteries and vigorously promote the use of lithium batteries. The company has accelerated the demonstration and promotion of base station echelon utilization. In 2018, it has stopped purchasing lead-acid batteries and unified procurement of batteries. By the end of 2018, about 120,000 base stations in 31 provinces and cities across the country had used 1.5 GWh of ladder batteries, replacing about 45,000 tons of lead-acid batteries. The company cooperates with 11 automobile manufacturers such as China FAW and SAIC to plan and build recycling channels, and takes the lead in Shanghai, Hubei and Guangdong. It cooperates with recycling enterprises to optimize the recycling process of decommissioned power battery batteries to ensure the use of waste. Centralized recycling and harmless disposal of batteries. At the same time, it cooperated with China Post, Commercial Bank, State Grid Electric Vehicle and other enterprises to research and apply the battery in the standby power supply of the equipment room, power grid peak-filling, new energy power generation and power dynamic expansion, and is under construction in Hexi area of Gansu Province. 15MWh photovoltaic emission elevator utilization project, 10MWh wind power elevator utilization and other test projects, to improve the overall efficiency of the cascade utilization.
Strengthen technical cooperation and establish a standard system. The company promotes the cooperation of industry, academia and research, and leads the industry to break through a number of key technologies such as battery grouping and capacity comprehensive evaluation, unifying the communication interface and protocol requirements of the battery management system, and promoting the intelligentization and standardization of the cascade utilization. The company has formed relevant technical specifications such as "Technical Specifications for Ladder Battery Products", "Requirements for Control of Packaging, Transportation and Storage of Ladders", and led the development of the industry standard "Technical Requirements and Test Methods for Power Stations for Communication Base Stations" to fill the domestic The communication industry uses the technical specification blanks to lead the use of technology.
In the process of vigorously promoting the utilization of power battery ladders, the company has some problems, mainly because the number of decommissioned batteries is currently small, and the downstream enterprises in the industrial chain are competing for the limited retired battery resources, and the purchase price of the battery is high. At the same time, the industry still has bottlenecks in technologies such as residual value assessment. The historical data such as the use of power batteries are urgently needed to evaluate the performance of decommissioned power storage batteries to ensure that the battery products used in the screening and reorganization are safe and reliable.
The Iron Tower Company has played an important demonstration role. According to the plan of the Iron Tower Company, it will continue to expand the use of batteries in 2019. It is estimated that the application of the battery will be about 5GWh, and the lead-acid battery will be replaced by about 150,000 tons. It is estimated that more than 50,000 tons of decommissioned power batteries can be consumed. In the 17 provinces and municipalities, 150 recycling service outlets have been built, and various application modes such as integrated backup power solutions have been developed. A number of key common technologies such as residual value assessment and rapid detection have been broken, and the technical standardization system has been improved.
