Safety performance has always been a concern of consumers, especially after the Tesla electric car caught fire, consumers are more concerned about the safety of lithium-ion batteries.

　　So is the safety of lithium iron phosphate batteries, which claim to be able to replace lead-acid batteries, be stronger?

　　First, let's look at the safety of lead-acid batteries.

　　Normally qualified lead-acid batteries are actually very safe.

　　However, at the end of the life of a lead-acid battery, if the charging voltage is too high or the charging time is too long, a large amount of hydrogen and oxygen gas will be generated inside the battery. When the concentration of these mixed gases reaches a certain concentration, it is too late to be discharged, or the vent is blocked, and it may explode when the positive and negative electrodes of the battery are short-circuited or an open flame occurs.

　　Let's look at the safety of lithium iron phosphate batteries.

　　When the lithium battery is used improperly, the internal temperature of the battery will rise rapidly, the positive electrode material will decompose, and the electrolyte will be oxidized. These two reactions can generate a lot of heat, which will cause the battery temperature to rise further.

　　In this case, although the lithium iron phosphate battery will not explode or burn directly because of the material system, but because the temperature of the battery surface is very high, if there are flammable materials such as paper and leather around the battery at this time, it is easy to produce Fire.

　　Lithium-ion battery (LIB) has become the main energy storage solution in modern social life. Among them, lithium iron phosphate batteries are a perfect substitute for lead-acid batteries, and are the first choice for grid-connected peak shaving, off-grid energy storage, photovoltaic energy storage, UPS, data centers and other industries.

　　It can be seen from the above that the biggest problem with lead-acid batteries regarding safety lies in their constituent materials, while lithium iron phosphate batteries are related to the actual conditions of use.