Why don't electric vehicles use lithium polymer batteries

The advancement and development of polymer lithium battery technology and its use in the key information market of emerging companies (electric vehicle industry) has set off a global research and development boom. Polymer lithium battery will definitely play a role in the field of electric vehicles and new energy industries. Critically affect the use. At present, the lithium battery that can be widely studied and used for electric vehicles is lithium iron phosphate battery, which has a good thermal stability and safety, and the price level is relatively low. These social factors have made lithium iron phosphate batteries the first choice for small electric vehicles and plug-in hybrid learning power lithium-ion batteries. However, among lithium batteries, the specific energy, specific power, and working voltage of lithium phosphate batteries are relatively low, while lithium cobalt oxide and lithium manganese oxide batteries have more competitive advantages in the use of large-scale pure electric vehicles. Lithium batteries currently include liquid lithium batteries (LIB) and polymer lithium batteries (PLB). Among them, liquid lithium batteries refer to secondary batteries, and Li intercalation compounds are positive and negative. The positive electrode is a lithium compound LiCoO2, LiNiO2 or LiMn2O4, and the negative electrode is a lithium-carbon intercalation compound LixC6. . The principle of the polymer lithium battery is the same as that of the liquid lithium battery, but the important difference is that the electrolyte is different from the liquid lithium battery. The critical structure of the battery consists of three parts: positive electrode, negative electrode and electrolyte. Polymer lithium battery refers to a battery in which at least one or more of the three critical structures uses polymer materials as a primary battery system. In the polymer lithium battery system currently under development, the polymer is mainly used for the positive electrode and the electrolyte. Positive electrode materials including conductive polymers or inorganic compounds commonly used in lithium batteries, electrolytes can be used for solid or colloidal polymer electrolytes, or organic electrolytes. Lithium ion technology is usually liquid or gel electrolyte, which is necessary The secondary packaging to contain the solid flammable active ingredients adds weight while also limiting size flexibility. 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: Briefly describe the meaning and use of lithium battery protection board and battery management system