New energy battery research and development technology overcomes the world's five major problems

　　Gao Feng experienced a job transfer recently. He came to Xinjin County from Handan, Hebei, and served as the director of the Battery Technology Research Institute of Yinlong New Energy Industrial Park. This research institute, which was just established on May 4, is the largest new energy battery production base among the eight bases in the country deployed by Yinlong New Energy. The research and development directions mainly include lithium titanate batteries, ternary batteries, lithium iron titanate batteries, ternary silicon carbon batteries, solid electrolyte batteries, and fuel cells.

　　At present, with the same volume, the lithium titanate battery has been successfully developed and mass-produced from 25Ah capacity to 40Ah capacity. In the future, more "made" new energy batteries will be sold all over the world.

　　will have more than 600 full-time scientific researchers

　　Driving from Chengya Expressway, about 28 kilometers, you will arrive at Yinlong New Energy Industrial Park. After entering from the dark red door, the first thing you see is the office building and advanced production workshop. This is also the location of the Battery Technology Research Institute of Yinlong New Energy Industrial Park.

　　The current existing office buildings and workshops are selected as the planning basis. The office buildings, R&D centers and laboratories cover an area of approximately 16,000 square meters, focusing on the realization of a new generation of high-safety, high-performance and low-cost lithium-ion batteries and new system batteries. Developed to meet the requirements of the new energy field for high specific capacity, long cycle life, wide operating temperature range, fast charge and discharge, high safety and environmental protection, and successfully applied to new energy fields such as electric vehicles and energy storage systems.

　　At 9 o'clock in the morning, Gao Feng walked into the R&D center on time. More than 100 technicians were intensively and orderly sorting out data, modifying drawings, and testing samples... High-end technical talents in the field of new energy batteries, like Gao Feng, are coming from all over the country. "Assemble", "At present, dozens of people have been brought over from the Handan base. In the near future, there will be more than 600 full-time scientific researchers, with a bachelor degree or above accounting for 60%. A master and doctoral degree accounting for more than 15%. Also included Some foreign experts."

　　"In addition to supplying the products needed by our other bases across the country, the products developed by the Institute will also be sold all over the world. In the future, more ‘made’ new energy batteries will appear in everyone’s vision."

　　R & D technology to overcome the world's five major problems

　　Speaking of the direction of research and development, the most proud of Gao Feng is the lithium titanate battery used in buses. "Although this battery is ordinary in appearance, we have overcome the five world problems of safety, wide temperature resistance, fast charge and discharge, life span, and industrialization recognized in the industry."

　　According to him, due to the stable structure of lithium titanate, no solid-liquid interface passivation film is formed on the surface, and the various dynamic properties at low temperatures can still maintain the state at room temperature. The reaction activity between lithium titanate and the electrolyte is low, which improves the stability and safety of the battery. At very high temperatures, lithium titanate can absorb oxygen generated by the decomposition of the positive electrode, reducing the risk of thermal runaway and improving the safety of the battery.

　　Not only that, based on the lithium titanate battery can be quickly charged and discharged, the application on the bus can realize on-the-fly charging, and the bus can be used to reach the terminal and the driver’s rest time (10-20 minutes) to quickly recharge the battery. It can achieve 6 minutes of fast charging and up to 25,000 cycles of use." Gao Feng said that the goal of this year for lithium titanate batteries is to achieve the R&D and mass production of 45Ah capacity. The increase in energy density means that the driving range of buses will be improved. promote.