How safe are lithium iron phosphate batteries?

How safe are lithium iron phosphate batteries?

Among various types of lithium batteries, the safest one should be lithium iron phosphate batteries. Under the same application conditions, the positive electrode material of lithium iron phosphate batteries is not easily decomposed, oxygen evolution is not severe, and it is not easy to generate a large amount of internal combustion pressure in a short period of time, so it is not easy to explode. At most, it will only slowly start to burn gradually.

Under normal circumstances, lithium iron phosphate batteries will not explode. In extreme cases, battery cells usually have safety valves (cylindrical/aluminum shells) to release pressure, while soft pack batteries are more prone to expansion and release pressure, so they will not explode. Therefore, in extreme cases, the explosion of lithium iron phosphate batteries is a rare event, and the probability of explosion is even smaller than the special prizes in welfare and sports lotteries.

Of course, there may still be one-time situations, such as severe collisions in accidents that could lead to spontaneous combustion and explosions. Of course, compared to other types of lithium batteries, its performance is relatively "mild", so it requires the use of a fireproof shell (iron box or aluminum shell or fireproof plastic shell), as well as reliable protective plates and fireproof materials to fix internal wiring harnesses/fill auxiliary materials.

Use reliable dedicated chargers, as the lithium iron phosphate batteries we use are generally not individual cells, but a battery pack that meets practical application requirements through the combination of wires and battery protection plates. This means that the voltage, battery capacity, and battery discharge capacity of the battery pack can meet the application needs. The battery charger needs to ensure that it can detect and control the charging voltage and current during charging, in order to balance the voltage and capacity errors between the individual cells in the battery pack, and control the temperature to ensure charging safety.

However, identified through 45 degree or 60 degree cycling tests, the cycling life of lithium iron phosphate batteries at high temperatures is generally proportional to their safety (batteries with longer lifespans at high temperatures typically have materials and designs that can improve safety). Of course, the quality of lithium iron phosphate battery cells varies, and the resulting battery pack will naturally have both good and bad qualities. The difference between good and bad may vary several times on this indicator.

As a professional manufacturer of lithium iron phosphate battery packs, BPI customizes high safety lithium iron phosphate battery packs according to customer needs, covering multiple fields such as automotive domain control, energy storage systems, electric forklifts, heavy-duty trucks, power tools, UPS power supplies, etc.