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Ternary material 18650 battery 3500mah lithium will become the mainstream of new energy technology development
There are generally recognized three routes for the development of energy vehicle battery technology, one is lithium battery, the second is ternary material battery, and the third is supercapacitor. From the application point of view, lithium battery has the highest applicability.
With the development of domestic new energy vehicles, lithium iron phosphate 18650 battery 3500mah lithium have encountered a bottleneck period, especially in terms of driving range, which is difficult to break through. Supercapacitor 18650 battery 3500mah lithium are still in the ideal stage, while ternary material 18650 battery 3500mah lithium have replaced lithium iron phosphate 18650 battery 3500mah lithium and become the mainstream trend of new energy vehicle power battery development.
The technology is more mature, safe and stable, and the price is relatively low. There are more than 100 domestic lithium iron phosphate power battery manufacturers, and in the existing domestic new energy vehicle power battery supply link, lithium iron phosphate power 18650 battery 3500mah lithium almost occupy the entire market.
Compared with these two 18650 battery 3500mah lithium, ternary lithium 18650 battery 3500mah lithium have the advantages of high safety performance, long life, and light battery weight, but due to their high cost, only a few car companies such as Tesla and BAIC New Energy are using them among the electric vehicle models currently on sale.
Recently, Phoenix Auto came to the factory that produces the "heart" of the BAIC New Energy E150EV second-generation car - ternary lithium 18650 battery 3500mah lithium. The power battery system of the Beijing E150EV second-generation new energy vehicle, which will be launched at the end of the year, will use ternary lithium 18650 battery 3500mah lithium from South Korea's SK Group.
The person in charge of BAIC New Energy said that at present, domestic new energy vehicle manufacturers are increasingly favoring power lithium 18650 battery 3500mah lithium with ternary materials as positive electrode materials, and the traditional lithium iron phosphate power battery market is gradually being eroded. Wang Binggang, leader of the Ministry of Science and Technology's "863 Plan" Energy-saving and New Energy Vehicle Major Project Supervision and Consulting Expert Group, said in an interview with Phoenix Auto that the development of lithium iron phosphate 18650 battery 3500mah lithium has reached a bottleneck period, and ternary lithium 18650 battery 3500mah lithium will replace lithium iron phosphate 18650 battery 3500mah lithium. This will be the historical trend of the development of new energy vehicle power 18650 battery 3500mah lithium.
"The safety of early ternary lithium 18650 battery 3500mah lithium was very poor, but now this aspect has been improved a lot. Due to its relatively high energy, it can significantly increase the vehicle's mileage, thereby increasing the company's vehicle sales. I personally believe that ternary lithium 18650 battery 3500mah lithium will enter the market." The head of BAIC New Energy took the Beijing E150EV second-generation new energy vehicle as an example. Its power battery can store up to 30.4 degrees of electricity, and the driving range can reach 240 kilometers at an economic speed. The mileage under comprehensive working conditions exceeds 200 kilometers, and the battery life exceeds 10 years and 200,000 kilometers, which is not available in lithium iron phosphate power 18650 battery 3500mah lithium.
Lin Yi, an expert of the National 863 Program and deputy chief engineer of BAIC Group, said that the structure of ternary lithium battery adopts aluminum-plastic soft packaging, which is different from the metal shell of liquid battery. Once a safety hazard occurs, the battery will only swell at most, and will not cause danger, so the safety performance is good; secondly, although the ternary material is light in weight, it has a large capacity and a higher energy ratio. Taking the E150EV second-generation car as an example, the ternary lithium battery currently used is 40% lighter than the steel shell lithium battery of the same capacity, and 20% lighter than the aluminum shell battery, and the energy density can reach 150Wh per kilogram, or even 200Wh. This also means that although the battery pack capacity of the E150EV second-generation car has increased by 4.8 degrees, the weight of the whole vehicle has not increased but decreased; thirdly, the internal resistance of the ternary lithium battery is small, which can directly reduce the heat generation of the battery, and the power utilization efficiency can be maximized.
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