Three yuan the advantages and disadvantages of lithium battery and lithium iron phosphate batteries

Source: 2020 - 03 - 29 'hits: ternary lithium battery and lithium iron phosphate battery the advantages and disadvantages of the lithium battery according to the data, first divided into iron phosphate lithium manganese batteries and battery series ( Including lithium cobalt, three metadata) 。 Lithium iron phosphate battery: the nominal voltage 3. 2 - 3. 3v; The ternary lithium battery: 3. 6 - 3. 7 v1。 The function of our country is a large country, and low temperature climate chaos, from the three northeastern provinces in the north to the southernmost tip of hainan island, the temperature change is very rich. In Beijing, for example. As the main shopping center of electric vehicles, Beijing approximately 40 ℃, the highest temperature in summer and winter about 16 ℃ below zero, the highest temperature is even lower. The temperature range is suitable for low temperature performance significantly better ternary lithium battery. Lithium iron phosphate batteries and Beijing in winter of high temperature resistant performance is a bit poor. 'relative capacity of 25 ℃ is refers to the discharge capacity and under the conditions of different temperature 25 ℃ when the ratio of the discharge capacity. This value can accurately reflect the attenuation of the battery life under the conditions of different temperature, the more close to 100%, the better the performance of the battery. On the basis of 25 ℃ at room temperature, two kinds of 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. Customers in different areas, when choosing lithium data, this must be taken into consideration. 2. Discharge linear linear just remaining charge and discharge the relationship between the voltage. Because of the characteristic of the data, lithium iron batteries discharge, channel area with high and low pressure area. In high voltage and low voltage, voltage drops very fast, and the channel area, the voltage drop is very slow. The discharge characteristics on the plus side, the first discharge voltage range is very steep, never a good side, user is difficult to according to the voltage display data to determine how much power left, may use the shopping cart. 3. Energy density of the current domestic new energy vehicles using lithium iron phosphate power battery for the first time, but the theory of energy density of lithium iron phosphate power battery co. , LTD. , co. , LTD. , the energy density of lithium iron phosphate battery monomer 120 wh/kg, after the group energy density 80 wh/kg, now the company is actively research and development of the higher energy density of lithium iron phosphate material new energy lithium manganese battery. Triad energy density is higher, after the grouping ternary lithium battery energy density is respectively 180 wh/kg and 110 wh/kg. The corresponding market advantage is obvious. Therefore, in terms of energy density, the ternary lithium battery is better than that of lithium iron phosphate batteries. 4. Security in terms of safety, lithium iron phosphate battery is better than that of three yuan. Reason is a triple data speculation, aluminum nickel and cobalt 18650 battery after more than 180 ℃, the phenomenon of the self-heating, after a fire is difficult to control, and will be shown after the lithium iron phosphate to 250 ℃ heating phenomenon. 5. Cycle life cycle of the single lithium iron phosphate battery life is 2000 times more than ordinary lithium batteries, the cycle of ternary single lithium battery life is about 1000 times that of the general lithium batteries. After group, due to the working environment, reduced service life. In general, the lithium iron phosphate battery energy density theory is limited, room for improvement is not very big, lithium iron phosphate better resistance to high temperature, low temperature resistance of the ternary lithium is better, the safety of the lithium iron phosphate will be better, the life of the lithium iron phosphate is relatively long, because both have their own advantages and disadvantages, so the application field is different. Power battery enterprises should pay more attention to the safety of the battery, enhancing monitoring of production, strict quality assurance, to ensure that the use of new energy vehicles and passenger safety.