my country Energy Storage Network News Although the domestic subsidy policy for new energy vehicles has begun to decline, the gradually rich infrastructure and more and more optional models have also allowed consumers to accept the popularity of new energy vehicles. As the source of power for electric vehicles, all uses of electric vehicles, such as battery life, charging and discharging, are inextricably linked to the performance of the battery.
At present, domestic power lithium batteries are mainly divided into two factions, which are divided into lithium iron phosphate and ternary materials according to the difference of cathode materials. Although both belong to secondary batteries and can be used repeatedly for charging and discharging, due to the difference in materials, there is still a relatively large difference in the performance reflected in the final use level.
Ternary material or lithium iron phosphate?
The so-called lithium iron phosphate battery refers to a lithium battery that uses lithium iron phosphate as the positive electrode material. This type of battery is characterized by the absence of precious metal elements (such as cobalt, etc.). In actual use, lithium iron phosphate batteries have the advantages of high temperature resistance, strong safety and stability, low price and better cycle performance.
my country Energy Storage Network News Although the domestic subsidy policy for new energy vehicles has begun to decline, the gradually rich infrastructure and more and more optional models have also allowed consumers to accept the popularity of new energy vehicles. As the source of power for electric vehicles, all uses of electric vehicles, such as battery life, charging and discharging, are inextricably linked to the performance of the battery.
At present, domestic power lithium batteries are mainly divided into two factions, which are divided into lithium iron phosphate and ternary materials according to the difference of cathode materials. Although both belong to secondary batteries and can be used repeatedly for charging and discharging, due to the difference in materials, there is still a relatively large difference in the performance reflected in the final use level.
Ternary material or lithium iron phosphate?
The so-called lithium iron phosphate battery refers to a lithium battery that uses lithium iron phosphate as the positive electrode material. This type of battery is characterized by the absence of precious metal elements (such as cobalt, etc.). In actual use, lithium iron phosphate batteries have the advantages of high temperature resistance, strong safety and stability, low price and better cycle performance.
Low temperature lithium iron phosphate battery 3.2V 20A
-20℃ charge, -40℃ 3C discharge capacity≥70%
Charging temperature: -20~45℃
-Discharge temperature: -40~+55℃
-40℃ support maximum discharge rate: 3C
-40℃ 3C discharge capacity retention rate≥70%
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The ternary material lithium battery refers to a lithium battery that uses nickel cobalt lithium manganate as the positive electrode material and graphite as the negative electrode material. Different from lithium iron phosphate, the voltage platform of ternary lithium battery is very high, which means that under the same volume or weight, the specific energy and specific power of ternary lithium battery are greater. In addition, ternary lithium batteries also have great advantages in terms of high-rate charging and low-temperature resistance.
On the battery alone, there is no so-called who is better or who is worse. It is just applied to the actual use scenario. Compared with lithium iron phosphate batteries, ternary lithium batteries are more suitable for current and future home electric vehicles.
Ternary material batteries are more suitable for passenger cars
Better low temperature discharge performance
my country has a vast territory and a complex climate. From the three northeastern provinces at the northernmost end to the Hainan Islands at the southernmost end, the temperature changes are very rich. Taking Beijing as an example, as the main market for electric vehicles, the highest temperature in Beijing is around 40°C in summer, while it is basically kept at about minus 16°C in winter, or even lower. Such a temperature range is obviously suitable for ternary lithium batteries with better low temperature performance. The lithium iron phosphate battery that attaches great importance to high temperature resistance will appear a little weak in Beijing's winter.