In order to pursue longer battery life, power battery suppliers and car companies have started to work on the battery capacity density. The lithium iron phosphate battery, which was originally known for its high safety, has been abandoned, and the current pure electric vehicles basically use ternary lithium The battery, without it, is due to its high energy density. Even BYD, which has been focusing on lithium iron phosphate batteries, has to carry ternary lithium batteries in passenger cars.
In addition to the car companies themselves wanting to make breakthroughs, the policy requirements are getting higher and higher. According to the latest national policy in 2019, the requirements for the battery capacity density of new energy vehicles have now reached 125Wh / kg, which is eliminated Many non-compliant vehicles. But now the power battery with higher energy density is only 180Wh / kg, and because of the high cost, it is only used in some mid-to-high-end models.
According to the estimates of some battery suppliers, the current ternary lithium battery can increase the energy density to 300Wh / kg in 2020, but in the current situation, it is not very optimistic, and what the ternary lithium battery can do The limit is about 350Wh / kg, I am afraid that it will be a little disappointing.
The solid-state battery favored by the industry, according to the data released by Qingtao Energy last year, the energy density of its first batch of solid-state batteries put into production can reach 400Wh / kg, which is more than twice that of the current ternary lithium battery. Even more frightening is that this is the beginning of solid-state batteries. After more and more companies develop, there will definitely be further breakthroughs. That is to say, with the same weight batteries, solid-state batteries can be more expensive than ternary lithium. The battery doubles the distance and the future is limitless.
It is also verified that not long ago, all roads lead to Rome, but some people were born in Rome.
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