Lithium iron phosphate battery is the development direction of electric vehicle batteries

Lithium iron phosphate battery is the development direction of electric vehicle batteries. Why is the battery the core of electric vehicles? It began in the history of electric vehicles. When it comes to electric new energy vehicles, it is easy to summarize it as a brand-new skill and thing. In fact, the history of electric vehicles is much earlier than expected, even before fuel vehicles. American Thomas Davenport built the first electric car driven by a DC motor in 1834. In 1838, Scotsman Robert Davidson invented the electric train; the tram, still in use today, was patented in the United Kingdom in 1840. In 1881, French engineer Gustav Truf invented the first electric car. This is a tricycle powered by a lead-acid battery. Later, lead-acid batteries, nickel-cadmium batteries, nickel-hydrogen batteries, lithium batteries and other fuel power batteries also appeared in the form of electricity. It can be seen that although the development of electric vehicles is earlier than that of fuel vehicles, and has gained a certain scale in the early days, in modern times, due to the development of fuel vehicles, electric vehicles are frustrated in the competition. But the real problem is that in the past, electric vehicles based on lead-acid batteries were restricted by the density, lifespan, and power of lead-acid batteries, and they have not been able to obtain a source of power, that is, the battery has achieved breakthroughs, making the development of electric vehicles a hindrance. . The classification and advantages and disadvantages of lithium batteries until the emergence of lithium batteries and 20 years of intensive development, this problem was gradually solved. Lithium batteries are generally divided into two categories: lithium metal batteries: lithium metal batteries generally use manganese dioxide as the positive electrode data, lithium metal or its alloy metal as the negative electrode data, and use a non-aqueous electrolyte solution. Lithium batteries: Lithium batteries generally use lithium alloy metal oxide as the positive electrode data, graphite as the negative electrode data, and non-aqueous electrolyte batteries. Although lithium metal batteries have a high energy density, they can theoretically reach 3,860 watts per kilogram. However, due to its unstable nature and cannot be charged, it cannot be used repeatedly as a power lithium-ion battery. Lithium batteries have become important power lithium-ion batteries because of their good charging capabilities. However, due to its combination with different elements, the composition of the positive electrode data shows great differences in various aspects, leading to more and more disputes about the positive electrode data path in the industry. Generally speaking, we say that most of the power lithium-ion batteries are lithium iron phosphate batteries, lithium manganese acid batteries, lithium cobalt acid batteries and ternary lithium batteries (ternary nickel cobalt manganese). The advantages and disadvantages of the above various batteries can be roughly summarized as: lithium iron phosphate: advantages: long life, high charge and discharge rate, good safety, good high temperature performance, harmless components, and low cost. Disadvantages: low energy density, low vibration density (bulk density). Ternary lithium: Advantages: high energy density and high vibration density. Disadvantages: poor safety, poor high temperature resistance, poor life, poor discharge capacity, toxic elements (the temperature of ternary lithium batteries rises sharply after high-power charging and discharging, and oxygen is easy to burn after high-temperature release). Lithium manganese acid: Advantages: high vibration density and low cost. Disadvantages: poor high temperature resistance, the temperature rises sharply after long-term use of lithium manganate, and the battery life is seriously attenuated (such as the Nissan electric car LEAF). Lithium cobalt oxide: generally used in 3C products, with poor safety and not suitable for power lithium ion batteries In theory, the battery we want should have high energy density, high volume density, good safety performance, high temperature and low temperature, long cycle life, non-toxic and harmless, high-power charging and discharging, integrating all the advantages, and low cost. But this kind of battery no longer exists, and it is necessary to choose between the advantages and disadvantages of different types of batteries. Moreover, different electric vehicles have different requirements for batteries. Therefore, we only need to distinguish between electric vehicles in the long-term to help us correctly distinguish the choice of battery roads. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Application of Lithium Iron Phosphate Battery in Mobile Base Station