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Home> Articles>News>An Unsolved Problem In The World — Non Chargeable Cylindrical Li-Fes2 Battery

An Unsolved Problem In The World — Non Chargeable Cylindrical Li-Fes2 Battery

From:CTECHI GROUP Limited     Release time:2018-12-07

Overview:In terms of development direction, lithium-ion batteries as automotive power have the advantages of high capacity density, high charging and discharging efficiency, small size and light weight, which are the inevitable trend of new energy for passenger cars. However, due to the chemical properties of lithium ion and the flammability of battery materials, it is much more difficult to ensure the safety of lithium ion batteries than that of nickel-hydrogen batteries. At present, the safety of lithium ion batteries is still an unsolved problem in the world.

In terms of development direction, lithium-ion batteries as automotive power have the advantages of high capacity density, high charging and discharging efficiency, small size and light weight, which are the inevitable trend of new energy for passenger cars. However, due to the chemical properties of lithium ion and the flammability of battery materials, it is much more difficult to ensure the safety of lithium ion batteries than that of nickel-hydrogen batteries. At present, the safety of lithium ion batteries is still an unsolved problem in the world.


There are three main types of lithium-ion batteries currently used in new energy vehicles, namely lithium manganate battery, high energy density lithium iron phosphate lifepo4 battery and lithium cobalt oxide battery. In terms of composition, lithium is a very active chemical element. In addition, the electrolyte of lithium ion batteries is combustible. Under extreme conditions such as severe collision and puncture, lithium ion precipitation and leakage of electrolyte are very easy to cause combustion.

High Energy Density Lithium Iron Phosphate Lifepo4 Battery

In fact, even in relatively small collisions, as long as the battery pack is deformed, resulting in leakage of related elements, it is possible to burn after being oxidized for a period of time. In May 2011, the National Traffic Safety Administration (NHTSA) conducted a fierce side and roll crash test on the EPV. Three weeks later, in early June, the EPV parked at the NHTSA Test Center suddenly caught fire and ignited other nearby vehicles. This test can be used as evidence.


Therefore, the author suggests that the owners of new energy vehicles, after the collision of vehicles, must ask professionals to carry out systematic inspection, especially battery packs, in order to prevent leakage.


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