What are the advantages of lithium iron phosphate battery?

Improvement of safety performance. The P-O bond in lithium iron phosphate crystal is stable and difficult to decompose. Even at high temperatures or overcharges, it will not collapse and heat like lithium cobalt oxide or from strong oxidizing substances, so it has good safety. It is reported that in the actual operation, a small number of samples were found to burn in the acupuncture or short-circuit experiment, but there was no explosion. In the overcharge experiment, it was found that there was still an explosion when high voltage charging was used, which was much more than several times its own discharge voltage. Nevertheless, its overcharge safety has been greatly improved compared with ordinary liquid electrolyte lithium cobaltate batteries.

High energy density

It is reported that the energy density of the square aluminum shell lithium iron phosphate battery produced in 2018 is about 160wh / kg. In 2019, some excellent battery manufacturers can achieve the level of 175-180wh / kg. Some powerful manufacturers use lamination technology and have a larger capacity, or can achieve 185wh / kg.

Good safety performance

The electrochemical performance of lithium iron phosphate battery cathode material is relatively stable, which determines that it has a stable charge and discharge platform. Therefore, the structure of the battery will not change, burn and explode during the charge and discharge process, and it is still very safe even under special conditions such as short circuits, overcharging, extrusion, acupuncture, and so on.

Long cycle life

The cycle life of lithium iron phosphate battery 1C generally reaches 2000 times, or even more than 3500 times. For the energy storage market, it is required to reach more than 4000-5000 times to ensure the service life of 8-10 years, which is higher than the cycle life of a ternary battery for more than 1000 times, while the cycle life of the long-life lead-acid battery is about 300 times