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

The peak has recently experienced a job transfer. He came to Xinjin County, Chengdu from Hebei, and served as the dean of the Battery Technology Research Institute of Yinlong New Energy Chengdu Industrial Park. This research institute, which was just established on May 4, is the largest new energy battery production base among the eight national bases of Yinlong New Energy. The research and development direction mainly includes lithium titanate battery, ternary battery, titanium iron lithium battery, ternary silicon carbon battery, solid electrolyte battery and fuel cell.

At present, lithium titanate batteries have achieved successful R&D production from 25Ah capacity to 40Ah capacity under the same volume. In the future, more “Chengdu Made” new energy batteries will be sold all over the world.

More than 600 full-time researchers

Driving from Chengya Expressway, after about 28 kilometers, you can reach Yinlong New Energy Chengdu Industrial Park. After entering the dark red door, the first thing that comes to mind is the office building and the advanced production workshop. It is also home to the Battery Technology Research Institute of Yinlong New Energy Chengdu Industrial Park.

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

At 9 o'clock in the morning, the peak entered the R&D center on time. More than 100 technicians are sorting data, modifying drawings and test samples in an orderly and orderly manner... High-end technical talents in the field of new energy batteries like the peak are coming from all over the country. Chengdu “assembles”. “At present, dozens of people have been brought from the base. In the near future, there will be more than 600 full-time researchers, 60% of whom have bachelor degree or above. Master degree has more than 15% including some foreign experts."

“In addition to supplying other bases in our country, the products developed by the institute will be sold all over the world. In the future, there will be more “Chengdu Made” new energy batteries appearing in everyone's field of vision.”

R&D technology overcomes five major problems in the world

When it comes to research and development, the most demanding peak is the lithium titanate battery used in buses. "Although this battery is ordinary in appearance, we have overcome the five world-wide problems recognized by the industry as safety, wide temperature resistance, rapid charge and discharge, longevity and industrialization."

According to him, since the lithium titanate structure is stable, the surface does not form a solid-liquid interface passivation film, and the kinetic properties at a low temperature can still maintain the state at normal temperature. The reactivity between the lithium titanate and the electrolyte is low, improving the stability and safety of the battery. At very high temperatures, lithium titanate absorbs the oxygen generated by the decomposition of the cathode, reducing the risk of thermal runaway and improving the safety of the battery.

Not only that, the lithium titanate battery can be quickly charged and discharged, and can be used with the bus on the bus. It can use the bus to reach the terminal driver's rest time (10-20 minutes) to quickly recharge the battery. It can realize 6 minutes of fast charging and up to 25,000 cycles of recycling.” Gao Feng said that the goal of lithium titanate battery this year is to realize the introduction of 45Ah capacity research and development. The increase of energy density means that the bus mileage is obtained upgrade.

The page contains the contents of the machine translation.