How about the lithium iron phosphate battery pack used by the new energy vehicle?

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The new energy car uses the lithium iron ion battery pack, how is the three-dimensional ion battery? The power lithium-ion battery pack is the key core of the new energy vehicle. About a new energy car, the battery is life. In recent years, with the rapid development and expansion of new energy vehicles, it has greatly stimulated the demand for lithium-ion battery industry.

Today, I will take a look at the phosphate ion battery pack and the three-dimensional ion battery of the new energy car on the market. What is important for domestic electric vehicle battery technology is a lithium iron phosphate and a three-dimensional lithium ion battery. Throughout the technical route of domestic new energy vehicles, most of them are based on "lithium iron phosphate", and the technical route of lithium iron phosphate is selected.

1, mainstream battery - lithium iron phosphate ion battery pack At present, the mainstream of the market is still a lithium iron phosphate ion battery pack, refers to a lithium ion battery with lithium iron phosphate as a positive material. In the early stages of new energy vehicles, the lithium iron phosphate ion battery has become the first choice for major manufacturers due to its advantages of its thermal stability, good safety and low development cost. However, with the continuous development of the technology, the three-dimensional lithium-ion battery in which the type can be superior, and the energy density of the lithium iron ion battery is low, and the lithium iron ion battery is mounted with a lithium iron phosphate ion battery.

The vehicle is high, directly leading to energy consumption. Moreover, the national energy density requirements of the new energy to make the car will also increase year by year. The lithium phosphate ion battery is limited by the problem.

The energy density is difficult to continue, so many manufacturers slowly turn the three-dimensional ion battery. development of. 2, the future may be mainstream battery-ternary lithium ion battery three-dimensional lithium ion battery, refers to a lithium ion battery, a lithium ion battery, a lithium ion battery, a ferrite, an energy density, a lithium iron ion battery, a lithium iron-free battery, an energy density High, price is suitable, comprehensive performance is more excellent, and has become the type of battery used in most new energy vehicles.

It seems a perfect three-dimensional lithium-ion battery, its shortcomings are also questioned by everyone. The largest disadvantage of the three-dimensional lithium-ion battery is to decompose at around 200 degrees. Under the use of high temperatures, the electrolyte will quickly burn, and the new battery has spontaneously or self-burst.

With the development of technology, many manufacturers have developed an excellent battery management system. The security issues have been improved, and the excellent performance has won the recognition of major automakers. Three-dimensional lithium ion battery will become the mainstream battery of new energy vehicles.

3, the lithium iron phosphate ion battery and the ternary lithium ion battery are compared that the energy density of the lithium phosphate ion battery is far less than the ternary lithium ion battery, but the safety is generally considered to be better than the ternary lithium ion battery. Energy density: The theoretical energy density of lithium iron phosphate dynamic lithium battery is limited, and the lithium iron phosphate ion battery pack monomer is 120Wh / kg, and the energy density of the group is 80Wh / kg, so the company is actively developing energy density High phosphate ferrite lithium material new power lithium ion battery. In contrast, the energy density of ternary batteries is high, and the single energy density of the ternary lithium-ion battery is 180Wh / kg, and 110Wh / kg after completion, the corresponding market advantage is obvious.

Therefore, in terms of energy density, the ternary lithium ion battery is superior to the lithium iron ion battery. ▲ Safety performance: Safety. The reason is that the nickel-cobalt aluminum 18650 battery in the ternary material will be self-heating, and it is difficult to control after the fire, and the lithium iron phosphate material will only exotherm in 250 ° C.

In general: three-dimensional lithium material is more prone to fire than phosphate materials. ▲ Circulating life: Lithium iron phosphate ion battery comparable to the ternary battery, the cycle life of the monomer battery is more than 3000 times, after the group, due to complex working environment, the service life has declined. Lithium iron phosphate electrode material is currently the safest lithium-ion battery positive material, coupled with its cycle life reaches 2,000 times, standard charging (5 hours), can reach 2000 cycle characteristics, plus due to industrial maturity The price technology threshold and the decline of technology have made many manufacturers who use lithium iron phosphate ion batteries for consideration of various factors.

It can be said that the rise of new energy vehicles, and the lithium iron phosphate ion battery pack has an inexpensive relationship. The material used by the lithium-ion battery is the lithium phosphate ion battery pack with high energy density, small size, light weight, safety environmental protection, long service life, high temperature performance number, and is widely put into the use of new energy vehicles. Summary: In Xiaobian's view, the key to the development of new energy vehicles is also a development of lithium-ion battery pack technology.

How to ensure that battery technology can meet the growing demand for battery technology to meet consumer, manufacturers should actively go to research and improve. .