How safe is lithium iron phosphate battery?

Among the types of lithium batteries, the safest one should be lithium iron phosphate battery under the same application conditions. The positive electrode material of lithium iron phosphate is not easy to decompose, oxygen evolution is not serious, and it is not easy to generate a large amount of internal combustion pressure in a short time, so it is not easy to explode. At most, it will slowly start to burn gradually.

Under normal circumstances, lithium iron phosphate batteries will not explode. In an extreme case, the battery cell generally has a safety valve (cylindrical/aluminum shell) to release pressure, and the soft pack is more likely to deflate and release pressure, so it will not explode. Therefore, the explosion of lithium iron phosphate batteries in extreme cases is a small probability event, and the probability of winning is smaller than the special prize of welfare lottery sports lottery.

Of course, there will still be a one-off situation, such as a violent collision in an accident, which may cause spontaneous combustion and explosion. Of course, compared with other types of lithium batteries, it will be relatively "gentle", so you need a flame-retardant shell (iron box or aluminum shell or flame-retardant plastic shell), a reliable performance protection board, and flame-retardant materials for internal wiring harness/filler fixing auxiliary materials.

Use a reliable dedicated charger, because the lithium iron phosphate battery we use is generally not just a single-cell battery, but a battery pack that meets the actual application requirements through the cooperation of wires and battery protection boards, that is, the voltage, battery capacity, battery pack discharge size, etc. can meet the application requirements. The battery charger needs to ensure that the charging voltage and current can be detected and controlled when the battery is charging, so as to balance the voltage and capacity errors between the cells in the battery pack and control the temperature, so as to ensure charging safety.

However, through the 45-degree or 60-degree cycle test to identify, the cycle life of lithium iron phosphate batteries at high temperatures is basically proportional to safety (batteries with a long life at high temperatures often have materials and designs that can also improve safety.) Of course, the quality of lithium iron phosphate battery cells is good and bad, and the battery packs formed will naturally be good and bad. The good and bad may differ several times in this indicator.

BPI, a professional lithium iron phosphate battery pack manufacturer, 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 trucks, power tools, UPS power supplies, etc.