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Electric vehicle battery and lithium iron phosphate ternary lithium battery which is better?

by:Vglory      2020-12-05
Source: 2020 - 03 - 23 and clicks: power auxiliary electric vehicles use lithium iron phosphate and ternary lithium battery which good? Lithium iron phosphate battery: the lithium iron phosphate battery refers to the lithium iron phosphate anode of lithium ion battery. The positive data including lithium cobalt acid lithium ion batteries, lithium manganese acid lithium, nickel acid, three metadata, lithium iron phosphate, etc. Lithium iron phosphate battery with high safety, high charge and discharge rate and long cycle life, etc. In addition to taking long, charge and discharge function good, the biggest advantage of lithium iron phosphate battery is its security and stability of the chemical properties of lithium iron phosphate, high temperature stability, 700 - Differentiation of 800 ℃ was going on, and the influence of the face, such as acupuncture, under the condition of short-circuit will not release oxygen, won't produce intense burning, high security features. Lithium iron phosphate batteries are the shortcomings of its function are greatly influenced by temperature, especially in low temperature environment, discharge capacity and capacity will be greatly reduced. In addition, the energy density of the lithium iron phosphate is relatively low, only calculate the battery as long as the components of the energy density of 120 wh/kg, if calculated the entire reactor, including battery processing system, heat dissipation part such as low energy density. Dynamic auxiliary electric vehicles use lithium iron phosphate and ternary lithium battery which good? Ternary lithium battery: ternary lithium battery, also known as' with ternary polymer such as manganese acid cobalt nickel or cobalt nickel aluminate copolymerization of 'lithium ion secondary battery. Because of the ternary lithium battery is now widely used in new energy vehicles, such as tesla, we know it's all models use ternary lithium battery. Ternary lithium battery is small in size, high density, good low temperature resistance, cycle performance, become the mainstream of new energy car. Life is 2000 charge-discharge cycles, we calculated on a single charge, every day can last more than five years. Ternary lithium battery safety is poor. Three yuan the poor thermal stability of lithium-ion batteries, in 250 - 300 ℃ happens differentiation. When the charges of the electrolyte in the battery and carbon data, the heat will worsen polarization, in a very short period of time of detonation occurs. Therefore, for the ternary lithium battery, the battery processing system, cooling system is critical. Dynamic auxiliary electric vehicles use lithium iron phosphate and ternary lithium battery which good? Lithium iron phosphate batteries, there are two defects cannot be ignored: it is a relatively low energy density, element size bigger; Second, it is more sensitive to temperature. In low temperature environment, charge to be markedly reduced. Due to the energy density is not in conformity with the provisions of the state of 150 watts per kilogram, so not suitable for large-scale used in passenger cars. The ternary lithium battery has been widely used in high speed. Due to national policy guidance in passenger car type, the energy density in a higher position, so the car companies are promoting substitute for ternary lithium battery cars. Even if is byd, the previously using lithium iron phosphate technology company, is also gradually replace it with the ternary lithium power battery used in the model. These patterns include: tang, qin, tengs, etc. Although the use of the ternary lithium battery tengze not yet on the market, but the news that the next round of the new product will use ternary lithium battery. The accord, the camry ( camry) Hybrid electric vehicles ( Including Japanese manufacturers) And the latest version using the ternary lithium batteries. Using the ternary lithium batteries, due to the energy density, cell volume and weight increased significantly, as the crew compartment or trunk provides a more practical space. Therefore, in general, the ternary lithium battery under the current policy environment has more obvious advantage. In addition to the battery life, charging is the electric car is an important part in practical application, the ternary lithium batteries on the charging power than the lithium iron phosphate battery has a great advantage. When the ternary lithium battery and lithium iron phosphate battery charging below 10 c, constant current than there was no significant difference. When the battery to more than 10 c, lithium iron phosphate batteries constant current share flexible, flexible charging power decreases. Finally, the service life of batteries, electric charge and discharge of the intimate contact with the function of the battery.
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