Is lithium iron phosphate battery really safe?

in Technology
Nowadays, when people buy new energy battery, they objectively have to choose between lithium iron phosphate battery and ternary lithium battery technologies. Insiders tell us that the ternary lithium iron phosphate system should pay attention to its endurance and lightweight, and the safety lithium iron phosphate system should be chosen. To this, consumers are eager for industry insiders to give a practical answer from a technical point of view: Is lithium iron phosphate battery safe? This question should be answered from three aspects: material/structure stability, production process, and charging-discharge characteristics.

1. Lithium iron phosphate is the safest anode material for lithium-ion batteries at present. It does not contain any heavy metal elements harmful to the human body.

2. The production process of lithium iron phosphate battery is the same as that of other lithium batteries. Its core processes include: batching, coating, rolling, making, and winding. In the dosing process, lithium iron phosphate material has relatively poor conductivity, so the particles are generally made smaller. The objective effect of this is that the internal arrangement is more uniform, which enables it to form a balanced voltage platform and maintain the stable state of the battery when working.

3. Charge and discharge are two basic working states of lithium batteries. When the lithium iron phosphate battery is charged and discharged, due to the weak oxidation capacity of iron ions, oxygen will not be released, and it is naturally difficult to have a REDOX reaction with the electrolyte, which makes the charging and discharging process of lithium iron phosphate battery in a safe environment. Not only that, in the high rate of discharge, even in the process of overcharge and discharge, it is difficult to occur violent REDOX reaction. At the same time, the crystal cell (the smallest component unit of the crystal) will shrink in the final volume due to the lattice change after the deinsetting of lithium, which just offset the increased volume of the carbon-negative pole in the reaction. Therefore, the lithium iron phosphate battery can maintain the stability of the physical structure in the charging and discharging process, eliminating the hidden danger of battery burst caused by the increase in volume.

It says the battery is for convenience and safety using monomer make this clear, for example, when in use, the lithium iron phosphate batteries need to provide suitable for electrical appliances of rated voltage and capacity, is the need for the lithium iron phosphate battery with group work, that is, the monomer of lithium iron phosphate batteries in series/parallel/series-parallel way equipment into a lithium-ion battery pack is available for practical. The most important thing in this configuration is the consistency of the individual cells. In general, it also has a balanced management system to ensure the safety of lithium batteries by controlling key parameters, which is a common feature of various lithium battery packs.


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