What is the current status of the energy density of lithium batteries?

Current status of energy density of lithium batteries The energy density of batteries refers to the size of the reserves in a certain space and how much electric energy can be released in an average unit. Under the same volume or weight, a battery with a higher energy density can store more electricity, and the driving range of an electric vehicle is longer. Therefore, the battery energy density has a great impact on the driving range of electric vehicles, and the state has also put forward certain requirements for the energy density of lithium-ion batteries for new energy vehicles in the form of subsidies. In 2017 and 2018, the national new energy vehicle subsidy has requirements for energy density and energy consumption coefficient in addition to the requirements for the cruising range. In 2017, the minimum energy density requirement was only 90Wh/kg, and in 2018 it was increased to 105Wh/kg. Among them, the energy density of non-fast-charging pure electric bus battery systems was higher than 115Wh/kg, an increase of 27.8%. In 2018, with the widespread use of ternary lithium batteries with higher energy density, the energy density of lithium-ion batteries for electric vehicle power has been greatly improved. Judging from the promotion catalog, the energy density of the batteries on the electric vehicles launched in 2018 is basically about 140Wh/kg-170Wh/kg, but the main body is about 140Wh/kg, and there are still very few above 160Wh/kg. The first batch of promotion catalogues in 2019 have been announced. It can be seen from the promotion information that in 2019, the energy density of lithium batteries for electric vehicles has reached 160Wh/kg, and it is estimated that more than 180Wh/kg models will appear in the future. The biggest benefit of increasing the energy density of lithium batteries for pure electric vehicles is to increase the comprehensive cruising range of pure electric vehicles to solve the problem of consumers’ anxiety about the mileage of new energy vehicles. After the charging infrastructure of new energy vehicles is relatively complete in the future, it will be added. The improvement of the energy density of the battery of Shanghai new energy vehicles will be an important development direction of the new energy vehicle industry in the future. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous article: What is the difference between power lithium battery and lithium carbonate battery?