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Lithium iron phosphate batteries in the analysis of application of new energy pure electric vehicles

by:Vglory      2020-11-03
Since lithium-ion batteries available around it have been conducting research and development work. Lithium ion battery cathode material has been hotly debated. Today we will discuss using lithium iron phosphate ( 磷酸铁锂) As the anode material of lithium iron phosphate batteries. Lithium iron phosphate battery full name should be lithium iron phosphate lithium ion battery, this name is too long, is called the lithium iron phosphate batteries. Due to its application performance is particularly suitable for power supply, thus added in the name of the 'power' is a word, the lithium iron phosphate power battery. Someone called it 'lithium iron ( 生活) Power battery '. For current lithium ion battery cathode materials mainly include: LiCoO 2, LiMn 2 O 4, LiNiO 2 and LiFePO 4. The metal elements that make up the battery cathode material, the cobalt ( Co) The most expensive and less storage capacity, the nickel ( 倪) And manganese, Mn) Cheaper, iron ( Fe) The cheapest. The price of the cathode materials is also in line with the price of these metals. Therefore, made of LiFePO4 battery anode materials of lithium ion battery should be the cheapest. The safety of the advantage is better; Long service life; Do not contain any heavy metals and rare metals ( Low cost of raw materials) ; No memory effect; Resistance to high temperature it can be easily through the acupuncture experiment. The general trend is the lithium iron phosphate has some defects, such as low tap density and compaction density. Low temperature performance is poor; Battery capacity is small; The same battery capacity, lithium iron phosphate battery weight is heavier, larger; The serious influence the electric car battery life. In addition, the lithium iron phosphate battery scrap after cannot be recycled, there is no recycling value. Domestic development of new energy automobile power lithium battery is always a direction, manganese acid lithium, argument between ternary lithium and lithium iron phosphate has never faded. However, the domestic mainstream of new energy automobile company basically USES lithium iron phosphate battery for three reasons. 1. Domestic development of new energy vehicles must ensure that the use of safe, reliable, stable performance of the low cost power battery. Among them, the security and reliability is a top priority. There is no security, new energy automobile industry, we have no future. Tesla using ternary lithium battery in best panasonic battery, and can't avoid three fires occur in five weeks. Fortunately, tesla advanced vehicle safety design did not cause personal injury, how many new energy automobile companies in China in terms of vehicle safety design can achieve the tesla levels? And the lithium iron phosphate battery has inherent advantages in security. 2. At present, and the core technology of ternary lithium manganese acid lithium in the hands of the Japanese and south Korean companies. Especially for the ternary lithium, whether technology, technology or equipment, Japan and South Korea industry leader has reached a very mature and stable stage. If we insist to use new energy automobile power battery three yuan route, I'm afraid that we are still chasing the road, we will be killed by the international giant, let alone on the corner overtaking. Lithium iron phosphate batteries. Japan and South Korea company basically not involved, a major international competitors from the United States. However, the technical level between China and the United States. 3. At present, the global nickel and cobalt resources in short supply. Both lithium cobalt nickel manganese oxide and lithium nickel and cobalt aluminate, ternary lithium battery materials formula cannot be separated from the two kinds of precious metals. It will lead to large-scale application of market prices. Two metals are very scarce in China. More than 90% of the cobalt used in domestic need to import. Two kinds of precious metals have international futures trading, the price is not only high and volatile. Domestic promotion of new energy vehicles failed to meet the policy goals of an important reason is the high prices. One of the most important reason is that nearly 50% of the cost of new energy vehicles power lithium battery price is still high. Three yuan route as a result, new energy vehicles prices higher, government subsidy and need more, marketing will never be able to achieve.
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