
1、 Better low-temperature discharge performance
Compared with other batteries, ternary batteries are more suitable for use
at low temperatures. Low temperatures do not affect the performance of
batteries, as they have a vast territory in China, resulting in significant
differences in temperature between the north and south of the country.
In addition, China is also a large country of electric vehicles. In cities
where the temperature difference between winter and summer is obvious, the
ternary lithium battery can play a more important role. Compared with the
ternary lithium battery, the Lithium iron phosphate battery, which attaches
importance to high temperature resistance, cannot play its advantages in low
temperature winter, and will be extremely weak.
2、 Higher energy density
At present, according to relevant data, the energy density of the 18650
cylindrical battery made of ternary materials has reached 232Wh/kg, and will
continue to increase to 293Wh/kg in the future.
Compared with the ternary lithium battery, the energy density of the
Lithium iron phosphate battery is slightly lower, which can only reach about
150Wh/kg.
Moreover, there is little hope that the energy density of Lithium iron
phosphate battery will exceed 300Wh/kg in the future.
Moreover, for household electric vehicles, batteries with low energy
density not only occupy more space, but also have heavier weight, which greatly
affects the battery's endurance during use.
Relatively speaking, the ternary lithium battery will save more space than
the Lithium iron phosphate battery, and will solve the problem of excessive
weight.
3、 Higher charging efficiency
In addition to the advantages in endurance, the ternary lithium battery
also has certain advantages in charging. Compared with the Lithium iron
phosphate battery, the charging efficiency of the ternary lithium battery is
higher.
At present, there are two widely used charging methods: constant current
charging and constant voltage charging. When starting charging, constant current
charging is generally used. At this time, the current is larger and the charging
efficiency is higher.
After constant current charging, the voltage inside the battery will reach
a certain value, which will enter the constant voltage charging stage. This
charging method will make the battery charge more fully.
In this charging process, the ratio of constant current charging capacity
to total battery capacity is called constant current ratio, which is the key
value for measuring the charging efficiency of a group of batteries. Compared
with Lithium iron phosphate battery, the percentage of ternary lithium battery
is higher, which means that the charging efficiency of ternary lithium battery
is higher.
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