Lithium iron phosphate batteries and ternary lithium battery energy density contrast analysis

Source: 2020 - 04 - Strip hits: 20 times the comparative analysis of the ternary lithium iron phosphate battery and lithium battery compares the performance of lithium iron phosphate material and ternary lithium batteries, lithium iron phosphate lithium and ternary battery safety, energy density and efficiency of charging and discharging lithium iron phosphate and lithium batteries, three yuan, and so on. In today's power battery market, mainly include the lithium iron phosphate batteries and ternary lithium battery. Main characteristics of the two is the difference between the energy density and safety. The energy density of power battery life, and security is also one of the most important indicator in power lithium batteries. Then from the energy density and safety, temperature adaptability, introduce two kinds of lithium battery charge and discharge efficiency four aspects of the differences and relations. 1. Lithium iron phosphate and ternary lithium battery energy density contrast analysis 1. Lithium iron phosphate battery energy density of lithium battery is very different from the rest. At present, new energy vehicles subsidies standards important indicator for the energy density of the battery system. Here it is important to note that the long battery production car energy density of power battery has reached 125 wh/kg. 2 energy density, lithium iron phosphate battery is usually 90 - between monomer 120 wh/kg, and three yuan energy density of lithium battery monomer of up to 200 wh/kg, ternary lithium battery energy density advantages are more obvious, it is also in recent years a large number of domestic online ternary lithium battery production line, with Japan and South Korea the persistence of the ternary lithium battery technology direction, injected powerful confidence into the market. Ternary lithium iron phosphate and lithium battery safety comparative analysis we know that in the material system, ternary lithium battery cathode material of decomposition temperature is about 200 ℃, the decomposition temperature of lithium iron phosphate batteries battery anode materials is about 700 ℃. In a laboratory test environment, short circuit of lithium iron phosphate battery monomer, basically no fire, ternary lithium batteries also have no, when using the ternary lithium batteries, especially for thermal management put forward higher request. For the vehicle battery pack, the safety measures to be more perfect and science. Effectively for the lithium battery with BMS management, make the battery in safe working condition. With ternary lithium iron phosphate lithium battery temperature adaptability of comparative analysis of our country is a large country, and climate is complex, from the northern provinces of northeast China to the southernmost tip of hainan island, the temperature change is very rich. In Beijing, for example. As the main market of electric vehicles in Beijing, the highest temperature in summer in 40 ℃, the highest temperature in winter about 16 ℃ below zero and even lower. The temperature range is suitable for low temperature performance significantly better ternary lithium battery. And to pay attention to the high temperature resistant performance of lithium iron phosphate battery, in winter in Beijing will appear a little thin. In addition, three yuan high temperature resistant and lithium iron phosphate lithium-ion batteries, the gap is not big. Ternary lithium battery or lithium iron phosphate batteries can be seen from above, on the basis of 25 ℃ at room temperature, under the principle of lithium ion batteries, lithium and lithium iron phosphate ternary battery discharge in 55 ℃ and 25 ℃ respectively when the discharge capacity of basically the same. And in - At 20 ℃, the ternary lithium battery and lithium iron phosphate batteries advantages more apparent. 4. With ternary lithium iron phosphate lithium battery charge and discharge efficiency analysis in addition to the battery life, charging is the electric car is an important part in actual use, the ternary lithium batteries on the charging efficiency than the lithium iron phosphate battery has a great advantage.