At present, the transformation of fuel vehicles to electric vehicles is the general trend. However, the safety of electric vehicles has always been the most concerned safety issue in the industry. The most unstable safety factor of electric vehicle is the on-board battery. For this reason, the Ministry of industry and information technology of the people’s Republic of China has also issued the safety requirements for electric vehicles, which clearly points out that the battery system shall not fire or explode within 5 minutes after thermal runaway of the battery cell, so as to reserve safe escape time for passengers. < p > < p > according to media reports, from October 16 to 17, “the Fifth International Summit on power battery applications (cbis2020) and the first China new energy and new materials (Ningde) summit” was opened grandly. At the opening ceremony on October 16, Zeng Yuqun, chairman of Ningde times, delivered a speech. In terms of materials, Zeng Yuqun said that in terms of materials, the R & D team has developed high stability cathode materials and high safety electrolyte through atomic level innovation, and the high temperature resistance boundary of the battery has been increased by 40 ℃, and the thermal stability has been greatly improved. < / P > < p > in the design of battery pack, the damage to the battery cell caused by different elastic deformation and plastic deformation of the shell under the action of external force is quantitatively analyzed, and the structural strength of the battery pack is optimized. < / P > < p > in battery thermal management, based on the physical and chemical characteristics of the battery, accurately control the safety boundary of temperature / voltage / current, ensure that the battery works in a safe and comfortable area, improve the monitoring model, identify the safety risk and early warning in time. < / P > < p > in the thermal diffusion part of the system, aviation grade heat-resistant materials and directional heat diversion technology are used to prevent the system from spreading and fire even if the monomer is out of control. In addition, this year’s new national standard of power battery and the United Nations global technical regulations put forward the requirement that the system thermal diffusion time should not be less than 5 minutes, which is very important to improve safety and ensure personnel escape. But the national standard is only the basic threshold, Ningde era has higher requirements. < / P > < p > here is a video to show you that the 811 ternary battery system designed and developed by us can easily pass the thermal diffusion test, and the time is not 5 minutes, but it will never catch fire. < / P > < p > according to the online public data, the installed capacity of global power batteries in August was 10.8 GWH, and Ningde times ranked first in the world with the installed capacity of 2.8 GWH, with a market share of 25.9%. However, from January to August this year, LG Chemical ranked first in the world with 15.9 GWH installed capacity, with a market share of 24.6%; Ningde times ranked second with an installed capacity of 15.5 GWH, with a market share of 24%. Global Tech