What batteries are currently used in pure electric vehicles?
1 Answers
Currently, pure electric vehicles use ternary lithium batteries and lithium iron phosphate batteries. Ternary Lithium Battery: Also known as ternary polymer lithium battery, it uses graphite material for the negative electrode and nickel-cobalt-manganese oxide (NCM) or nickel-cobalt-aluminum oxide (NCA) materials for the positive electrode. The ternary composite positive electrode material can adjust the ratio according to actual needs. Compared with lithium iron phosphate batteries, it has higher energy density, smaller battery size, and better low-temperature performance. Lithium Iron Phosphate Battery: Since lithium iron phosphate is used as the positive electrode material, it is called lithium iron phosphate battery. Its raw materials are low-cost, and the thermal control temperature of lithium iron phosphate batteries is relatively high, generally above 500 degrees. Therefore, compared with ternary lithium batteries, lithium iron phosphate batteries have relatively stronger stability. The most important advantage of lithium iron phosphate batteries is their long service life, and their charge-discharge cycle times are better than those of ternary lithium batteries.