How to distinguish the new energy vehicle battery is ternary lithium battery or lithium iron phosphate battery?
The three commonly used batteries of new energy vehicles are ternary lithium battery, lithium iron phosphate battery, and nickel metal hydride battery, and the current more common and popular recognition is ternary lithium battery and lithium iron phosphate battery. So, how to distinguish the new energy vehicle battery is ternary lithium battery or lithium iron phosphate battery? The following is a brief introduction to the method.
For the average consumer, the easiest way to tell whether a battery is lithium or lithium iron phosphate is to look at the battery data in the vehicle configuration sheet, which is usually labeled by the manufacturer.
At the same time, it can also be distinguished by looking at the data of the power battery system on the body nameplate. For vehicles like Chery Xiaoant and Wuling Hongguang MINI EV, there are lithium iron phosphate versions and lithium ternary versions.
By comparing the data on the nameplates of the two models, it was found that the rated voltage of the lithium iron phosphate version was higher than that of the lithium iron phosphate version, while the rated capacity of the lithium iron phosphate version was higher.
In addition, compared with lithium iron phosphate batteries, lithium iron phosphate batteries have higher energy density and better low-temperature discharge performance, while lithium iron phosphate batteries are superior in terms of life, manufacturing cost and safety. If you find yourself buying a long endurance model, or in the winter low temperature environment, the endurance attenuation is less than other models, then nine times out of ten is a three-way lithium battery, on the contrary is lithium iron phosphate battery.
Because the power battery pack is difficult to distinguish from the appearance of the terre lithium battery or lithium iron phosphate battery, so in addition to the above methods, to distinguish the terre lithium battery and lithium iron phosphate battery, you can only use professional instruments to measure the voltage, current and other data of the battery pack.
The characteristics of ternary lithium battery: ternary lithium battery is characterized by good low temperature performance, the limit working temperature can reach minus 30 degrees. But its disadvantage is that the thermal runaway temperature is low, only more than 200 degrees Celsius, for relatively hot areas, prone to spontaneous combustion.
The characteristics of lithium iron phosphate: lithium iron phosphate battery development history is relatively long, it is characterized by good stability, and high thermal runaway temperature, can reach 800 degrees. In other words, a lithium iron phosphate battery won‘t catch fire until the temperature reaches 800 degrees. But it is more afraid of cold, in the temperature is more cold place, battery decay will be more severe.
