Lithium ferrous phosphate has two disadvantages that can not be ignored: first, its energy density is relatively low, its weight is large and its volume is large; Second, it is sensitive to temperature. In the low temperature environment, the charging amount will decrease obviously. Because the energy density can't meet the national requirements of 150 WHr/kg, it is not suitable for large-scale application in passenger cars. ?
Ternary lithium battery, due to the significant increase of energy density, the battery volume is reduced and the weight is reduced, which makes more practical space for passenger compartment or trunk. Therefore, on the whole, the advantages of ternary lithium batteries are more obvious in the current policy environment. ?
Ternary lithium batteries have higher energy density and better cycle performance than ordinary iron phosphate. At present, with the continuous improvement of formula and structure, the nominal voltage of the battery has reached 3.7V, which has reached or exceeded the level of iron phosphate battery in capacity. Ternary lithium polymer is indeed better than lithium iron phosphate battery, so ternary lithium polymer is better.