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What effect does the service life of lithium iron phosphate battery have?

26 Dec 2020 - Lithium iron phosphate battery lithium ion battery Lifepo4 battery
Lithium iron phosphate battery refers to the lithium ion battery with lithium iron phosphate as the positive electrode material. The cathode materials of lithium ion battery include lithium cobalt acid, lithium manganese acid, lithium nickel acid, ternary materials, lithium iron phosphate and so on. Lithium cobalt oxide is the cathode material of most lithium ion batteries.

Recycle Lifepo4 battery.
After 5000 cycles, the capacity of lithium iron phosphate battery reached 84%, and the 1C cycle life of the laboratory of lithium iron phosphate battery reached more than 3500 times, and some reached more than 5000 times.

Factors influencing the service life of lithium iron phosphate battery
First: charging and discharging
When choosing a charger, it is best to use a charger with the correct terminal charging equipment (such as reverse overcharge time equipment, negative voltage difference (-DV) cut-out charging equipment and reverse overheating induction equipment) to prevent the lithium iron phosphate battery from being overcharged and shortening its service life. In general, slow charging extends battery life more than fast charging.

Discharge depth is an important factor affecting the life of lithium iron phosphate batteries. The higher the discharge depth, the shorter the life of the lithium iron phosphate battery. In other words, as long as the discharge depth is reduced, the service life of lithium iron phosphate batteries can be greatly extended. Therefore, we should prevent lithium ion battery UPS from overdischarging at extremely low voltage.

Lithium iron phosphate batteries have different capacities, chemical structures or charging levels, and the mixed use of new and old batteries will also cause excessive discharge of lithium iron phosphate batteries, or even reverse charging.
If the lithium iron phosphate battery is not charged for a long time, its life will be reduced. Lithium iron phosphate batteries require a long period of electron flow to achieve their expected service life.

Second.The operating environment
If the use of lithium iron phosphate battery in high temperature for a long time, it will make the electrode activity attenuation, shorten the service life, therefore, as far as possible to maintain the appropriate operating temperature is a good way to extend the life of lithium iron phosphate battery.
Prevent dust accumulation in the cabinet and maintain the battery in the power supply in time. Battery maintenance is also an important point to extend the battery life, dust accumulation is because the battery operation caused by static electricity attracts dust, dust accumulation will prevent the module operation, so it is important to clean the dust to ensure a good operating environment for lithium ferrous phosphate batteries.

The experimental results show that the life of lithium iron phosphate from battery decreases with the increase of charging times. In general, lithium iron phosphate batteries are charged 3000-5000 times.
To measure the performance of a rechargeable battery, we defined the number of cycles. User practices vary because experiments under different conditions are not comparable, and comparisons must be made to standardize the meaning of the lifecycle. The service life number of lithium iron phosphate battery can generally be obtained from the label of its theoretical life number, but there is a certain gap between the actual service life number and the theoretical life number, and the prominent use habit makes our battery life can be extended.
LiFePo4 Battery 750Li-ion Battery 750
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