Summary of important parameters of new energy vehicle power lithium-ion battery

Important parameter table of several types of lithium batteries Lithium cobalt oxide is the ancestor of the positive data of lithium batteries. Its important advantage is high energy density, but the disadvantage is poor stability, that is, low safety. Tesla's use of this battery is important to extend battery life. The ternary data, that is, the three types of positive electrode data of nickel, cobalt and manganese are mixed in a certain proportion, with outstanding energy density, but overall safety, which is an important flow of the world's power lithium ion battery research and development. Due to the outstanding comprehensive level of lithium manganese oxide, the market share is the first. Among them, lithium manganese oxide battery technology is the world's first in Japan and South Korea. The stability and service life of lithium iron phosphate are excellent. The domestic technology is strong and the country has invested a lot of money. However, many of its limitations are low energy density and poor consistency. Consistency refers to the degree of error of key indicators such as components, voltage, and internal resistance between the type single battery. The greater the error, the worse the consistency. An electric vehicle is a battery pack composed of many individual batteries connected in series. The more strings, the more inconsistent the multiplier, and the shorter the battery life. Regarding the application of these four types of batteries, each type of lithium battery has its applicable model. Pure electric vehicles have higher requirements for cost and lifespan, so ternary lithium batteries have more potential. Plug-in hybrid electric vehicles need to be discharged frequently at high power, and the frequency of charge and discharge is high, so they are suitable for lithium iron phosphate. Low-speed electric vehicles should not have high energy density. The price of lead-acid batteries is lower than that of lithium batteries, so they have a certain survival value in this type of market. Electric bicycles use fewer batteries, so it is an inevitable trend for ternary lithium batteries to replace lead-acid batteries. At present, most of the large domestic power lithium battery manufacturers have been transformed from consumer lithium battery manufacturers, and the safety and technical standards of power lithium batteries are much higher than those of consumer lithium batteries. The quality of the batteries of individual domestic companies may be better. If they are used in complete vehicles, the quality of these batteries has yet to be developed. Compared with battery giants in Japan and South Korea, Chinese manufacturers still have a certain gap in safety and consistency. One of the important reasons is that some domestic processing technology parameters are not as high as those of foreign companies, resulting in large differences in products. Nowadays, many foreign battery giants have entered the Chinese market. In the next few years, the competition in the power lithium-ion battery industry will be very fierce. To occupy half of the power lithium-ion battery industry, it is necessary to continuously innovate technology and steadily fight. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Introducing the new energy vehicle battery thermal management system