What are the characteristics of lithium iron phosphate batteries?

What are the characteristics of lithium iron phosphate batteries?

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1. High energy density

According to reports, the energy density of the monomer of the aluminum-shaped aluminum-shaped iron phosphate battery in 2018 is about 160Wh/kg. In 2019, some battery companies can reach the level of about 175-180Wh/kg. The process and capacity are large or 185Wh/kg.

2. Good safety

The electrochemical properties of lithium iron phosphate batteries are relatively stable. This determines that it has a seamless charging and discharge platform, so the battery structure remains unchanged during the charging and discharge process, will not explode, and it is also very safe under special conditions such as short circuit, overcharge, squeezing, impregnation, etc.

3. Long life

The cycle of lithium iron phosphate battery generally reaches 2000 times, or even more than 3500 times. Taking the energy storage market as an example, it guarantees 4000 ~ 5,000 times, 8-10 years of life, and the cycle life of more than 1,000 times of ternary batteries, longevity lead acid The cycle of the battery is about 300 times.

Synthesis of lithium iron phosphate batteries.

The synthesis process of lithium iron phosphate has been basically complete, mainly divided into solid phase and liquid phase method. Among them, the high -temperature solid -phase reaction method is used many, and some researchers combine the microwave synthesis method of the solid phase and the hydraulic synthesis method of the liquid phase method -microwave water thermal method.

In addition, the synthesis method of lithium iron phosphate includes bionic method, cooling drying method, emulsification drying method, pulse laser deposition method, etc. Choosing other methods with small synthesis and good dispersing performance can effectively reduce the diffusion path of Li, two stages of two stages, two stages The area of contact is large, and the spread of li is accelerated.

What are the industrial applications of lithium iron phosphate batteries?

Application of the new energy vehicle industry

In my country's "Energy Conservation and New Energy Vehicle Industry Development Plan", it proposes: "The overall goal of my country's new energy vehicle development is by 2020, and the cumulative production and sales of new energy vehicles will reach 5 million. . "Lithium iron phosphate batteries are widely used in the fields of cars, passenger cars, logistics cars, low -speed electric vehicles and other fields with their advantages of low safety and cost. The density advantage, lithium iron phosphate batteries still have irreplaceable advantages in the areas of passenger cars, logistics vehicles. In the bus field, lithium iron phosphate batteries accounted for about 76%, 81%, and 78%in 5, 6 times, and 7 times in 2018 Keep mainstream. In the field of special vehicles, lithium iron phosphate batteries accounted for about 30%, 32%, and 40%of the "Catalogs" in 5, 6 and 7 in 2018, and the application ratio gradually increased. Academician Yang Yousheng believes that the use of lithium iron phosphate batteries to increase the electric vehicle market, which can not only improve the safety of the vehicle, but also support the marketization of increasing electric vehicles, thereby eliminating pure electric vehicles in mileage, safety, price, and charging , Subsequent battery problems and other anxiety. From 2007 to 2013, many automobile companies began to increase the program for pure electric vehicles.

Start the application from the power supply

In addition to the power lithium battery function, the launching type of iron phosphate battery also has an instantaneous high -power output function. It uses electric power lithium batteries with less than 1 degree instead of traditional lead -acid batteries. It has idle start stopping function, and also has engine shutdown, taxiing and braking energy recycling, accelerated assistance and electric cruise functions.