Is the ternary lithium-ion battery safe?

Many people say that ternary batteries are not safe. Do you think so? Let me tell you the fact that the three batteries are unsafe. People are all making lithium iron phosphate batteries and spreading public opinion that the three batteries are unsafe. There is room for living. This is what an executive of a power lithium battery company said in an interview with the media. Very simple two sentences, but said a point, that is, the person who sang the bad ternary battery turned out to be lithium iron phosphate steel powder. On January 24, 2016, the Ministry of Industry and Information Technology of the Zhangxiangmu equipment industry department made it clear that due to the safety of power lithium batteries, the ternary lithium-ion battery bus has been suspended from the list of recommended models for the promotion and promotion of new energy vehicles. application. At present, the regulations have been implemented for nearly 4 years, the ternary battery in the passenger car field has not been announced, and new energy vehicles have not been included in the recommended list of passenger cars carrying ternary batteries. However, the application prospects of ternary batteries in the passenger car field are bright. According to statistics from the tramexchangedata think tank, in the 1-11 batches of new energy vehicle recommendations this year, triple batteries account for about 70% of the types of power lithium batteries. Although the proportion of lithium iron phosphate batteries is relatively low, the overall trend is rising, especially in recent months, more and more passenger car companies have begun to support lithium iron phosphate batteries. The competent authority has no specific requirements for the battery type of special vehicles, so the car company can choose the battery type according to the actual situation. According to the statistics exchange data of the think tanks of trams, the new energy vehicles in the 1-11 batches of this year in the recommended catalogue support new energy special vehicles in the type of power lithium batteries, and the model supports more than 70% of the lithium iron phosphate batteries, and The supported quantitative model suggests an overall upward trend. The proportion of three-pole batteries is around 20%, and the number of three-pole batteries is decreasing. The phenomenon. Now we look at another set of data. At the end of 2018, the research results of the power lithium battery testing and evaluation technology of the national key research and development project were announced. Researchers conducted thermal runaway expansion experiments on soft-packed terns and lithium iron phosphate battery modules. By collecting characteristic parameters such as battery voltage and temperature, the characteristics of lithium-ion batteries when thermal runaway caused by heating and the propagation characteristics of thermal runaway between lithium-ion batteries are studied. The thermal runaway characteristics and thermal runaway expansion characteristics of the two batteries are compared. The final conclusion is that the ternary lithium ion battery and the lithium iron phosphate lithium ion battery are used in the experiment. The extended specific heat is in the thermal runaway experiment. After the ternary lithium ion battery module causes the battery thermal runaway, the battery, in turn, has Thermal runaway, and some laws of the development of thermal runaway. There is no thermal runaway expansion of the lithium iron phosphate battery module. After one battery triggered thermal runaway, no thermal runaway occurred in other batteries, and no thermal runaway occurred after continuous heating for 3 hours. The ternary lithium-ion battery burns violently when it loses control of heat, and releases more energy than lithium iron phosphate batteries. This conclusion is not surprising. Many laymen may understand that lithium iron phosphate batteries are safer than ternary batteries, but this is only one aspect. Ternary batteries have many advantages compared with lithium iron phosphate batteries. The ternary lithium ion battery is a polymer containing three metal elements: nickel (Ni), cobalt (Co), manganese (Mn) or aluminum (Al). These three are indispensable and play a huge role in batteries. Cobalt is a very expensive rare metal with high cost, while manganese or aluminum is used to reduce the cost of cathode materials while improving the safety and stability of the battery. By adjusting the ratio of nickel, cobalt, and manganese (or aluminum), battery companies can further increase the energy density of batteries, which means that under the same volume, the higher the energy density of the battery, the greater the range of electric vehicles. In the past two years, this has always been the focus of people’s attention. Consumers are concerned about mileage, while automakers are concerned about limit statements: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete the previous one. Article: The share of Chinese companies in the lithium-ion battery market is expected to rise sharply!