

This project belongs to the key technology direction of energy Internet in the field of advanced energy technology. Environmental problems are becoming increasingly serious, and electricity and clean substitution in the transportation sector are of great strategic significance. The increasing popularity of electric vehicles has put forward higher requirements for charging facility technology. With the construction of the Energy Internet, facing the need for innovation in electric vehicle charging technology, the application need for deep integration of electric vehicles and the Internet of Things, and the technical need to promote the consumption of new energy power generation and provide support for the power grid, this project has been jointly researched in the country and international science and technology. With the support of projects such as projects, the National Natural Science Foundation of China and other projects, we have jointly tackled key problems for 9 years and achieved a series of results integrating technology, equipment and application. The main innovations are as follows: 1) In terms of key equipment and flexible control strategies that support the layered interaction of network-stations-piles-vehicles, an optimized control strategy based on flexible power automatic distribution technology of group charging and group control is proposed, and a flexible automatic power control system is developed; a multi-agent based on-site distributed and orderly charging strategy is proposed to achieve collaborative optimization of charging revenue and peak-valley differences of the power grid, and reduce the impact of group charging on the power grid; A new IP65-level charging equipment with dual air cooling and heat dissipation has been developed to achieve safe maintenance-free operation of the equipment; a charging pile that can be charged and discharged in both directions has been developed, realizing the auxiliary function of electric vehicles to participate in power grid regulation. 2) Based on& ldquo; Internet +& rdquo; In terms of intelligent charging service technology for electric vehicles, it proposed a master-slave game charging guidance method and charging navigation strategy based on transportation and power information fusion to improve charging economy from both operators and users; developed an electric vehicle battery based on a battery aging model. Intelligent diagnosis technology improves user convenience through real-time battery status monitoring; developed charging pile remote fault diagnosis and real-time status monitoring technology to improve the safety of the electric vehicle charging process. 3) In terms of key technologies of the wind/light-storage-charging integrated power station as the energy node of the energy Internet, the wind/light-storage-charging integrated power station energy storage system design and a modular hierarchical energy management system have been developed; an integrated power station energy collaborative dispatch strategy based on multiple feedback of energy storage status and dynamic compensation of equivalent resistance power shortage is proposed; An integrated power station demonstration platform has been built to achieve demand response, achieving economic and stable operation of the integrated power station and improving the consumption level of new energy power generation in the power grid. The project has 12 authorized patents, 5 software copyrights, 3 national standards, 2 industry standards, and 16 papers have been published, including 9 SCI/EI papers. Project achievement appraisal opinion: ldquo; The overall project results have reached the international advanced level, including flexible automatic distribution of group charge and group control power and wind/light-storage-charging energy collaborative scheduling technology, and safe and efficient charging technology for electric vehicles in the ubiquitous Internet of Things environment. Technology has reached the international leading level rdquo;. The research results have been applied to 40 charging outlets such as Shanghai Anchi Greenland, 228 urban public fast charging stations and high-speed fast charging stations such as Shanghai Xinqiao Photovoltaic Energy Storage Public Fast Charging Station, and 312 fast charging stations in Beijing-Hong Kong-Macao and other highway service areas. Fast charging stations and fast charging stations in 120 cities across the country have been promoted and applied. As of the end of 2018, a total of more than 7800 sets of fast charging systems using this project's technology have been produced, with a market share of more than 30%, new sales of 820.16 million yuan, new profits of 64.61 million yuan, and new taxes of 21.99 million yuan; New electricity sales revenue and photovoltaic Internet access revenue totaled 94.02 million yuan, new profits of 23.44 million yuan, and new taxes of 12.964 million yuan, with significant economic and social benefits. The results of the project have promoted technological progress in the electric vehicle charging equipment industry, provided users with safer, intelligent, convenient and fast charging services, promoted the deep integration of electric vehicles and the energy Internet, and promoted the large-scale, healthy and orderly development of the electric vehicle and energy Internet industries.
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