Advantages of lifepo4 battery
Good safety performance
Safety comes from the stability of cathode materials and reliable safety design. lifepo4 battery pack has passed strict safety test and will not explode even in severe collision.
Long cycle life
The 1C cycle life of lifepo4 battery generally reaches 2000 times, or even more than 3500 times. The energy storage market requires more than 4000-5000 times, which is higher than other types of lithium batteries.
Good high temperature performance
The thermal peak of lifepo4 battery can reach 350 ~ 500 ℃. The working temperature range is wide, and 100% capacity can still be released under high temperature.
Fast charging
Using a special charger, the battery can be fully charged after charging at 1.5C for 40 minutes.
Green environmental protection
Lifepo4 battery is green, non-toxic, pollution-free, with a wide range of raw materials and low price.
Cycle life of lifepo4 battery
Lifepo4 battery is used at room temperature
Basically, the cycle life is more than 2000 times. Small lithium battery manufacturers with slightly inferior quality also have a cycle life of more than 1000 times.
Lifepo4 battery used in high temperature environment
At present, the high temperature performance of lifepo4 battery is not very mature, and the operating temperature is – 20 ℃ to 125 ℃. This temperature range is the theoretical value, and the actual application temperature range is smaller.
Lifepo4 battery used in low temperature environment
The effect of low temperature on the performance of lifepo4 battery is greater than that of high temperature. According to the current market situation, the service life of lifepo4 battery is significantly reduced when it works below – 20 ℃ to – 40 ℃, and the cycle service life is about 300 times.
Factors affecting cycle life of lifepo4 battery
Charge discharge
When selecting a charger, it is best to use a charger with a proper termination charging device. In order to avoid shortening the service life of lifepo4 battery due to overcharge. Generally speaking, slow charging can prolong the service life of the battery better than fast charging.
Discharge depth
The depth of discharge is the main factor affecting the service life of lifepo4 battery. The higher the depth of discharge, the shorter the life of lifepo4 battery. In other words, as long as the discharge depth is reduced, the service life of lifepo4 battery can be greatly prolonged. Therefore, we should avoid over discharging the lithium battery ups to a very low voltage.
Work environment
If lifepo4 battery is used at high temperature for a long time, its electrode activity will be attenuated and its service life will be shortened. Therefore, it is a good way to prolong the service life of lifepo4 battery to keep it at an appropriate operating temperature.
Recovery of lifepo4 battery
Fire recovery process
The traditional fire recovery method is generally to burn the electrode pieces at high temperature to burn the carbon and organic matter in the electrode fragments. The remaining ash that cannot be burned is finally screened to obtain fine powder materials containing metals and metal oxides.
Wet recovery process
Wet recovery mainly dissolves metal ions in lifepo4 battery through acid-base solution. Further, the dissolved metal ions are extracted in the form of oxides and salts by precipitation and adsorption. Reagents such as H2SO4, NaOH and H2O2 are mostly used in the reaction process.