The application of lithium iron phosphate battery in new energy pure electric vehicle

Since lithium-ion batteries available around it research and development work has been in constant. Lithium ion batteries anode material has always been a debate topic, today let's talk just lithium iron phosphate (LiFePO4) as the cathode material lithium iron phosphate batteries。

lithium iron phosphate battery full name should be lithium iron phosphate lithium ion battery. The name was too long, referred to as lithium iron phosphate batteries. Because of its performance is particularly suitable for power applications, to join in the name of "power" two words, namely lithium iron phosphate power battery. Also some people called it "lithium iron (LiFe) power battery".

Using LiFePO4 as the anode material cost

LiFePO4 battery internal structure

Currently used in lithium ion battery cathode material basically has: LiCoO2, LiMn2O4, LiNiO2 and LiFePO4.Of these battery cathode material of metal elements, cobalt (Co) is the most expensive, and the storage capacity is not much, nickel (Ni), manganese (Mn), cheaper, and iron (Fe) the cheapest. The price of the anode materials is consistent with the prices of these metals market. Therefore, the use of LiFePO4 cathode material of lithium ion batteries should be the cheapest.

Advantage is that security is better; Longer service life; Do not contain any heavy metals and rare metals (low cost of raw materials);No memory effect; High temperature resistant; Can be easily through the acupuncture experiment.

Slightly potential is the lithium iron phosphate has some defects on the performance, such as low tap density and compaction density; The low temperature performance is poor; Battery capacity is small; The same battery capacity, the weight of the lithium iron phosphate batteries more bigger; Seriously affected the life of electric cars. In addition, the lithium iron phosphate battery scrap after basically cannot be recycled, there is no recycling value.

Why the Chinese car companies favor the lithium iron phosphate batteries

China's new energy vehicles power lithium battery development there has been controversy - direction, ternary lithium manganese acid lithium, lithium iron phosphate battle has not subsided. But why is the present domestic mainstream of new energy car companies use basic it is lithium iron phosphate batteries, careful analysis for three reasons.

BYD Qin electric version

One, the development of China's new energy vehicles, must ensure that the use of safe and reliable, stable performance and low cost of power battery. Among them, safe and reliable is the first, there is no safe there would be no new energy automobile industry in the future; Tesla has adopted the best Panasonic battery of ternary lithium electricity, also can't avoid caught fire three times five weeks. Fortunately, tesla advanced vehicle safety design did not cause person casualties, and China's new energy automobile enterprises in terms of vehicle safety design, and a few can reach the level of the tesla? The lithium iron phosphate battery has the congenital advantage in security.

Second, at present, the core technology of ternary lithium manganese acid lithium is both in Japan and South Korea enterprise hands. Especially the ternary lithium, technologies, processes and equipment, Japan and South Korea industry leading has reached a very mature and stable stage. If we stick to three yuan on the new energy vehicle power battery line, I'm afraid we still chasing the road, has been the international giant to kill, more don't talk about what corner overtaking. lithium iron phosphate batteries are different. Japan and South Korea enterprise basic not involved the international main competitors from the United States. But the difference between the technology level of China and the United States, with universal group acquired A123, in fact Chinese companies have mastered the lithium iron phosphate battery technique and technology to the world's highest. As long as the increasing investment curing this advantage, China's new energy vehicles will be the possibility of overtaking corners.

Third, at present, the global nickel and cobalt resources nervous, ternary lithium electricity materials formula, whether nickel cobalt manganese acid lithium, lithium nickel or cobalt aluminate, is inseparable from the two kinds of precious metals. Much of its application will lead to market prices, both metals are very scarce in China, China's cobalt need to import the use of more than 90%, the two precious metals have international futures trading, prices are not only high and volatile. China's new energy cars didn't achieve the goal of policy is expected to one big reason, is the high prices. Among them, the most important reason, is occupying the new energy car costs nearly 50% of the high power lithium battery prices. The results of three yuan route, is the new energy car prices higher, requires the government's subsidies also want more, never come to market promotion.

Article summary:

In my opinion, the key of the development of new energy vehicle also is the key to haunt the mobile digital products, the development of the battery. Despite the complex battle over the relative merits of technology, how to under the condition of the safety guarantee battery technology can satisfy the growing consumer demand is the key.

The page contains the contents of the machine translation.