On February 16, the China Automotive Power Battery Industry Innovation Alliance released the january 2022 mainland power battery data, with a total production capacity of 29.7 GWh, an increase of 146.2% year-on-year. In terms of loading capacity, the loading capacity of ternary lithium batteries in January this year was 7.3GWh, and the loading capacity of lithium iron phosphate batteries was 8.9GWh.
Ternary lithium battery and lithium iron phosphate battery which is good, these years have been countless media, netizens have discussed, here is a brief explanation of the advantages of the two batteries. The advantages of ternary lithium batteries are higher energy density, endurance and power. Take Tesla motors as an example, the Model 3 standard endurance rear-drive upgrade version is a lithium iron phosphate battery, and the high-performance version and high-endurance version are ternary lithium batteries.
The energy density of lithium iron phosphate batteries is not as good as that of ternary lithium batteries, and in the case of the same volume of batteries, the endurance is definitely worse, but it has an advantage that is enough to make up for all the shortcomings, that is, higher safety. In general, the material of ternary lithium batteries will decompose at 200 ° C and produce a violent chemical reaction, and the electrolyte will burn rapidly. Lithium iron phosphate batteries will only decompose at 700 ~ 800 ° C, and will not release oxygen molecules, and the battery combustion is not so intense.
Which is more important, battery life and safety? I believe that the vast majority of people will choose safety, especially in the 21st century, where car accidents are frequent. In the past two years, Xiao Lei has seen a lot of electric vehicle accidents, and the ternary lithium battery is easy to burn after the collision, and the fire is difficult to extinguish.
There are many car companies that choose lithium iron phosphate batteries, among which BYD, the new energy automobile company with the highest sales volume in China, is a strong supporter of lithium iron phosphate batteries. We all understand the principle that fish and bear paws cannot be combined, but consumers definitely still hope that manufacturers can take into account both endurance and safety.
Ternary lithium batteries are limited by materials, and if you want to improve safety, you must reduce the energy density. Although lithium iron phosphate batteries have low energy density, but inherent safety is higher, manufacturers continue to upgrade technology, even if it has not been able to catch up with ternary lithium batteries, it is enough to meet the needs of long-distance users and users in cold areas in the north.
From the current situation, lithium iron phosphate batteries have become a trend, BYD, BAIC, Jianghuai and other car companies, are investing heavily in the development of lithium iron phosphate battery technology. It is believed that it does not take too long for a pure electric vehicle equipped with lithium iron phosphate batteries to reach an endurance of 1,000 kilometers.