Lithium iron phosphate as one of the current battery types of electric vehicles, which is characterized by its relatively stable thermal stability, production costs are not high, long service life, etc.. However, its low temperature resistance is very low, in the case of minus 10 degrees, although the battery can be used normally, but the charging efficiency will be significantly reduced.
For lithium iron phosphate winter is too bad this statement, in fact, winter low temperature lithium iron phosphate is will be greater than the ternary lithium battery decay, but is not large. Under the same conditions, if the vehicle equipped with ternary lithium batteries will shrink 25% due to winter low temperature range, while lithium iron phosphate is likely to reach 30%. The gap between the two is just that, and not as big as the gap rumored by some people online. In addition, the gap is not entirely determined by the innate properties of the battery.
The difference between lithium iron phosphate and ternary lithium battery comparison
Battery energy density is an index that affects the performance of new energy vehicles range. Lithium iron phosphate battery cell energy density is only about 110Wh/kg, while ternary lithium battery cell energy density is generally 200Wh/kg. that is, the same weight of the battery, ternary lithium battery energy density is 1.7 times that of lithium iron phosphate battery, ternary lithium battery can bring a longer range for new energy vehicles.
Lithium iron phosphate battery is currently the best thermal stability of the power battery, in terms of safety compared to ternary lithium batteries have absolute advantages. Lithium iron phosphate battery electrothermal peak up to 350 ℃, the internal chemical composition of the battery needs to reach 500 ~ 600 ℃ before it begins to decompose; while the thermal stability of ternary lithium battery performance is very general, it will begin to decompose at about 300 ℃.Lithium iron phosphate battery is currently the best thermal stability of the power battery, in terms of safety compared to ternary lithium batteries have absolute advantages. Lithium iron phosphate battery electrothermal peak up to 350 ℃, the internal chemical composition of the battery needs to reach 500 ~ 600 ℃ before it begins to decompose; while the thermal stability of ternary lithium battery performance is very general, it will begin to decompose at about 300 ℃.Lithium iron phosphate battery is currently the best thermal stability of the power battery, in terms of safety compared to ternary lithium batteries have absolute advantages. Lithium iron phosphate battery electrothermal peak up to 350 ℃, the internal chemical composition of the battery needs to reach 500 ~ 600 ℃ before it begins to decompose; while the thermal stability of ternary lithium battery performance is very general, it will begin to decompose at about 300 ℃.Lithium iron phosphate battery is currently the best thermal stability of the power battery, in terms of safety compared to ternary lithium batteries have absolute advantages. Lithium iron phosphate battery electrothermal peak up to 350 ℃, the internal chemical composition of the battery needs to reach 500 ~ 600 ℃ before it begins to decompose; while the thermal stability of ternary lithium battery performance is very general, it will begin to decompose at about 300 ℃.
Ternary lithium batteries are more efficient. Experimental data show that the difference between the two is not much when charging under 10 ℃ conditions, but above 10 ℃ will pull away, in 20 ℃ charging, the constant current ratio of ternary lithium batteries is 52.75%, the constant current ratio of lithium iron phosphate is 10.08%, the former is 5 times the latter.
Lithium iron phosphate battery cycle life is better than the ternary lithium battery, ternary lithium battery theoretical life is 2000 times, but basically to 1000 cycles, the capacity decay to 60%. Even if the industry is more excellent Tesla, after 3000 times can only maintain 70% of the power, while lithium iron phosphate battery after the same cycle cycle, but also 80% of the capacity.
In contrast, lithium iron phosphate battery safety, long life, high temperature resistance; ternary lithium battery light weight, high charging efficiency, low temperature resistance. Therefore, the difference between the two generated by the time and place of their respective adaptability is the reason for the coexistence.
Post time: Nov-02-2022