What kind of power batteries are available for lithium iron phosphate batteries?

①Lithium iron phosphate battery: Lithium iron phosphate battery refers to a lithium battery that uses lithium iron phosphate as a positive electrode material. The cathode materials of lithium batteries mainly include lithium cobalt oxide, lithium manganate, lithium nickelate, ternary materials, lithium iron phosphate, and so on. Among them, lithium cobalt oxide is currently the cathode material used in most lithium batteries. The nominal voltage of the lithium iron phosphate battery is 3.2V, the final charging voltage is 3.6V, and the final discharge voltage is 2.0V. Due to the different quality and technology of the positive and negative electrode materials and electrolyte materials used by various lithium battery processing manufacturers, there will be some differences in their performance. Advantages: long life, high charge and discharge rate, good safety, good high temperature performance, harmless elements, low cost. Disadvantages: low energy density, low tap density (bulk density). ②Ternary lithium battery: Ternary lithium battery generally refers to a lithium battery that uses lithium nickel cobalt manganese oxide or lithium nickel cobalt aluminate ternary cathode material, and uses nickel salt, cobalt salt and manganese salt as three different component ratios. Different adjustments, so called ternary, contain many types of batteries with different ratios. From the shape to distinguish, can be divided into soft-pack batteries, cylindrical batteries and square hard-shell batteries. Due to the high density of ternary lithium batteries and relatively long cruising range, domestic car companies and passenger cars have switched to ternary lithium batteries, including BAIC, BYD, and JAC. However, ternary lithium batteries have shortcomings such as poor safety, poor high temperature resistance, and poor life. At the beginning of 2016, they were also stopped by the Ministry of Industry and Information Technology, and the ternary lithium battery buses were suspended and included in the list of recommended models for the promotion of new energy vehicles. The nominal voltage of the ternary lithium battery can reach 3.6-3.8V, the energy density is relatively high, the voltage platform is high, the tap density is high, the cruising range is long, the output power is large, the high temperature stability is poor, but the low temperature performance is excellent, and the cost is relatively high. high. Advantages: high energy density and high tap density. Disadvantages: poor safety, poor high temperature resistance, poor lifespan, poor high-power discharge, and toxic elements (the temperature rises sharply after high-power charging and discharging of ternary lithium batteries, and the release of oxygen after high temperature is very easy to burn). ③Lithium manganate battery: Lithium manganate battery refers to a battery that uses lithium manganate as the positive electrode. The nominal voltage of lithium manganate battery is 2.5~4.2v. Lithium manganate battery is widely used because of its low cost and good safety. . Lithium manganate is one of the more promising lithium ion cathode materials. Compared with traditional cathode materials such as lithium cobalt oxide, lithium manganate has the advantages of rich resources, low cost, no pollution, good safety, and good rate performance, which is ideal. Power lithium-ion battery cathode material, but its poor cycle performance and electrochemical stability greatly limit its industrialization. Advantages: high tap density, low cost, good rate performance, and easier preparation. Disadvantages: poor high temperature resistance, the temperature rises sharply after long-term use of lithium manganate, the battery life decays seriously, the cycle life decays quickly, and swelling is prone to occur. ④Lithium cobalt oxide battery: Lithium cobalt oxide battery has stable structure, high capacity ratio, outstanding comprehensive performance, but its safety is poor, and the cost is very high. It is mainly used for small and medium-sized batteries, and is widely used in notebook computers, mobile phones, MP3/4, etc. In small electronic equipment, the nominal voltage is 3.7V. At present, the cost of cobalt lithium is too high. Many companies use manganese lithium instead, and some are all manganese lithium. Lithium cobalt oxide has stable performance and is currently the most mature technology used in mobile phones, but the biggest disadvantage of its use is the high cost. Cobalt is a relatively scarce strategic metal; in addition, it is also difficult to use in power lithium-ion batteries. In theory, the power lithium battery we want should have high energy density, high volume density, good safety, high temperature and low temperature resistance, long cycle life, non-toxic and harmless, high-power charging and discharging, and integrating all the advantages and low cost . But there is no such battery at present, so 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, only a long-term judgment on electric vehicles can help us correctly judge the choice of battery route. 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