The performance of the lithium-ion battery cathode material directly affects the performance of the lithium-ion battery, and its cost also directly determines the cost of the battery. At present, the positive electrode materials that have been successfully developed and applied mainly include lithium cobalt oxide, lithium iron phosphate, lithium manganate, ternary materials nickel cobalt lithium manganate (NCM) and nickel cobalt lithium aluminate (NCA).

The BMS battery management system is simply the steward of the battery, which plays important functions such as ensuring safety, extending the service life, and estimating the remaining power. , reduce the loss caused by battery damage.

What is the real lifespan of a LiFePO4 battery pack? In fact, the lifespan of lithium battery packs is similar. Whether it is a LiFePO4 battery or a ternary lithium battery, the actual service life is related to the user's usage and protection. In this article, how long is the real life of a LiFePO4 battery pack?

LiFePO4 battery has a series of unique advantages such as high working voltage, high energy density, long cycle life, low self-discharge rate, no memory effect, green environmental protection, etc., and supports stepless expansion, suitable for large-scale electric energy storage, in renewable Energy power stations have good application prospects in the fields of safe grid connection of power generation, power grid peak regulation, distributed power stations, UPS power supplies, and emergency power supply systems.

Ternary lithium batteries generally refer to ternary polymer lithium batteries. Ternary polymer lithium battery refers to a lithium battery whose positive electrode material uses nickel cobalt lithium manganate (Li(NiCoMn)O2) ternary positive electrode material. The precursor product of ternary composite positive electrode material is nickel salt, cobalt salt, manganese salt. As the raw material, the ratio of nickel, cobalt and manganese in it can be adjusted according to actual needs. The battery with ternary material as the positive electrode is safer than the lithium cobalt oxide battery, but the voltage is too low, so it is used in mobile phones (the cut-off voltage of mobile phones is generally around 3.4V). ) will have a clear feeling of insufficient capacity.

Research published in the latest issue of the American Chemical Society "NanoLetters" shows that Chinese scientists are expected to develop a lithium battery that is resistant to combustion and explosions. This lithium battery made of new materials is flexible, low-cost and safer.

Lithium manganese iron phosphate (LMFP) is a new type of cathode material obtained by adding manganese element on the basis of LiFePO4. On the one hand, it can improve the voltage of the material system and make up for the lack of low energy density caused by low voltage of LiFePO4; The surface is coated with a carbon material conductive agent to improve the conductivity. So, what are the advantages of LMFP cathode material?

Ternary lithium-ion batteries refer to lithium-ion batteries that use three transition metal oxides of nickel, cobalt, and manganese as cathode materials. Compared with lithium iron phosphate batteries, ternary lithium-ion batteries have more average overall performance and higher energy density. high, the volume specific energy is also higher. Because it combines the advantages of lithium cobaltate, lithium nickelate and lithium manganate, its performance is better than any of the above single-component cathode materials.

Lithium manganese iron phosphate (LiMnxFe1-xPO4) is a new type of phosphate lithium-ion battery cathode material formed by doping a certain proportion of manganese (Mn) on the basis of lithium iron phosphate (LiFePO4). Through the doping of manganese element, on the one hand, the advantageous characteristics of iron and manganese can be effectively combined, and on the other hand, manganese and iron are both located in the fourth periodic subgroup and adjacent to the periodic table, and have similar ions Radius and some chemical properties, so doping will not significantly affect the original structure.

Many people will be entangled in the type of battery when purchasing new energy vehicles. In fact, the difference between ternary lithium battery and lithium iron phosphate battery mainly lies in the positive electrode material. Among them, the positive electrode material of ternary lithium battery is nickel salt, cobalt salt, manganese salt, and the positive electrode material of lithium iron phosphate battery is lithium iron phosphate. In addition, the electrolyte and anode materials of both use lithium hexafluorophosphate and graphite.