What is the big comparison of LiFePo4 battery and NMC(Li(NiCoMn)o2 Battery for New Energy Electric Vehicle
The rapid growth of China's new energy vehicle production and sales has directly led to the development of power batteries, not only that, at present, China's power battery market is basically dominated by local enterprises. 2017, the CATL by virtue of lithium iron phosphate and NMC lithium ion battery two routes continue to advance, market share successfully surpass BYD, become the first supplier of domestic power battery. BYD also began to gradually give up lithium iron phosphate batteries, switch to the NMC lithium ion batteries. Another hand, BYD cooperated with Chang’an(CHONGQING CHANGAN AUTOMOBILE Co., Ltd) to develop power batteries and committed to new energy electric vehicle development.
Lithium-ion batteries are widely used in lithium iron phosphate batteries[LiFePo4] and NMC lithium ion batteries[Li(NiCoMn)O2], these two types of lithium-ion batteries lead the power of the battery two era. First of all, the lithium iron phosphate battery, although the current market most of the new energy vehicles using NMC lithium batteries, but in the early stages of new energy promotion and development, lithium iron phosphate battery[LiFePo4] is the main power source of new energy vehicles, which is more representative of BYD car enterprises. The vast majority of BYD's models were powered by lithium iron phosphate batteries prior to a large shift to lithium-ion batteries last year.
There are probably several reasons why lithium iron phosphate batteries[LiFePo4] can be popularized in large scale.
Lithium iron phosphate battery has a long service life, under normal circumstances, its cycle life can reach more than 2000 times. In addition, in all lithium-ion batteries, lithium iron phosphate battery is the best thermal stability, its electric peak can reach 350-500 ℃, when the temperature reached about 500 ℃, the internal chemical composition began to decompose, such characteristics also make lithium iron phosphate battery safety is guaranteed.
The another reason why lithium iron phosphate batteries are widely promoted is the low cost. As we all know, the cost of batteries in a pure electric vehicle accounted for a large proportion of the total cost, reducing battery cost is one of the most effective ways to improve the performance of vehicles. For lithium iron phosphate batteries, it does not contain nickel, cobalt and other valuable elements, raw materials for the rich resources of phosphorus, iron, so the cost is relatively easy to control.
However, since it will gradually be replaced by NMC lithium batteries, it naturally has its own shortcomings. One of the most important is that the energy density of lithium iron phosphate is low, the same mileage, the use of lithium iron phosphate battery vehicle weight is higher, and excessive weight of energy control is obviously unfavorable. In addition, China's new energy policy is increasing the demand for energy density, limited by the characteristics of the material itself, lithium iron phosphate battery energy density is difficult to improve, which is one of the reasons for its abandonment.
Again, the most widely used lithium-ion batteries, this is the CATL can win the key to the power battery market. Compared with lithium iron phosphate battery[LiFePo4], NMC lithium battery has more average performance, higher energy density and higher volume than energy, and with the development of battery industry, the price of NMC lithium battery has come to the range that a manufacturer can accept.
The biggest advantage of NMC lithium-ion battery is that the energy density of batteries is high, and the storage density is usually above 200wh/kg, so it is more friendly to the lightweight design and more suitable for the current demand of the new energy passenger car market than the 90-120wh/kg of lithium iron phosphate.
However, the shortcomings of NMC lithium-ion batteries are also prominent, the decomposition temperature of 250-350 ℃ or so, at this time the internal chemical components began to decompose, releasing oxygen molecules, under the action of high-temperature electrolyte will quickly burn, increase the risk of spontaneous combustion and explosion of batteries. Therefore, The battery management system(BMS) is highly required for the electric vehicle with NMC lithium battery, in the design process needs to do a overcharge protection, over protection, over temperature protection and overcurrent protection. But as the technology progresses, the safety of NMC lithium batteries has been improved, such as Jianghuai New energy-owned liquid-cooled battery control technology, to ensure that the battery pack temperature between 10-35 degrees and not affected by outdoor temperature, greatly protect the battery activity and endurance, to avoid low temperature caused by the loss of endurance and high temperature caused by the rapid decay.
At present, because of its outstanding comprehensive performance, NMC lithium battery has been widely used in the market, and all the major new energy vehicle companies have all equipped with NMC lithium batteries, including Tesla, Geely EV, BAIC BJEV EX and EU series, Jianghuai iEV series. Resources from OFweek.
Lithium-ion batteries are widely used in lithium iron phosphate batteries[LiFePo4] and NMC lithium ion batteries[Li(NiCoMn)O2], these two types of lithium-ion batteries lead the power of the battery two era. First of all, the lithium iron phosphate battery, although the current market most of the new energy vehicles using NMC lithium batteries, but in the early stages of new energy promotion and development, lithium iron phosphate battery[LiFePo4] is the main power source of new energy vehicles, which is more representative of BYD car enterprises. The vast majority of BYD's models were powered by lithium iron phosphate batteries prior to a large shift to lithium-ion batteries last year.
There are probably several reasons why lithium iron phosphate batteries[LiFePo4] can be popularized in large scale.
Lithium iron phosphate battery has a long service life, under normal circumstances, its cycle life can reach more than 2000 times. In addition, in all lithium-ion batteries, lithium iron phosphate battery is the best thermal stability, its electric peak can reach 350-500 ℃, when the temperature reached about 500 ℃, the internal chemical composition began to decompose, such characteristics also make lithium iron phosphate battery safety is guaranteed.
The another reason why lithium iron phosphate batteries are widely promoted is the low cost. As we all know, the cost of batteries in a pure electric vehicle accounted for a large proportion of the total cost, reducing battery cost is one of the most effective ways to improve the performance of vehicles. For lithium iron phosphate batteries, it does not contain nickel, cobalt and other valuable elements, raw materials for the rich resources of phosphorus, iron, so the cost is relatively easy to control.
However, since it will gradually be replaced by NMC lithium batteries, it naturally has its own shortcomings. One of the most important is that the energy density of lithium iron phosphate is low, the same mileage, the use of lithium iron phosphate battery vehicle weight is higher, and excessive weight of energy control is obviously unfavorable. In addition, China's new energy policy is increasing the demand for energy density, limited by the characteristics of the material itself, lithium iron phosphate battery energy density is difficult to improve, which is one of the reasons for its abandonment.
Again, the most widely used lithium-ion batteries, this is the CATL can win the key to the power battery market. Compared with lithium iron phosphate battery[LiFePo4], NMC lithium battery has more average performance, higher energy density and higher volume than energy, and with the development of battery industry, the price of NMC lithium battery has come to the range that a manufacturer can accept.
The biggest advantage of NMC lithium-ion battery is that the energy density of batteries is high, and the storage density is usually above 200wh/kg, so it is more friendly to the lightweight design and more suitable for the current demand of the new energy passenger car market than the 90-120wh/kg of lithium iron phosphate.
However, the shortcomings of NMC lithium-ion batteries are also prominent, the decomposition temperature of 250-350 ℃ or so, at this time the internal chemical components began to decompose, releasing oxygen molecules, under the action of high-temperature electrolyte will quickly burn, increase the risk of spontaneous combustion and explosion of batteries. Therefore, The battery management system(BMS) is highly required for the electric vehicle with NMC lithium battery, in the design process needs to do a overcharge protection, over protection, over temperature protection and overcurrent protection. But as the technology progresses, the safety of NMC lithium batteries has been improved, such as Jianghuai New energy-owned liquid-cooled battery control technology, to ensure that the battery pack temperature between 10-35 degrees and not affected by outdoor temperature, greatly protect the battery activity and endurance, to avoid low temperature caused by the loss of endurance and high temperature caused by the rapid decay.
At present, because of its outstanding comprehensive performance, NMC lithium battery has been widely used in the market, and all the major new energy vehicle companies have all equipped with NMC lithium batteries, including Tesla, Geely EV, BAIC BJEV EX and EU series, Jianghuai iEV series. Resources from OFweek.
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