18650 rechargeable battery lithium 3.7v 3500mah
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18650 rechargeable battery lithium 3.7v 3500mah
18650 rechargeable battery lithium 3.7v 3500mah

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The future development of lithium battery diaphragm materials

release time:2023-03-07 Hits:     Popular:AG11 battery

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  In addition to the electrolyte, the main materials of lithium -ion batteries also include positive materials, negative electrode materials, and diaphragm. The lithium battery pack diaphragm has good mechanical properties, chemical stability, and high temperature autism performance. Therefore, it can improve the comprehensive performance of lithium ion batteries from the aspects of quarantine battery positive and negative poles, allowing lithium ions to pass, and preventing battery explosions caused by high temperature. Therefore, lithium ion batteries are more advantageous in terms of energy density, cycle life, environmental protection and safety than traditional lead -acids, nickel -cadmium batteries, etc., and also enable lithium ion batteries to replace traditional lead -acid and nickel -cadmium batteries. They are widely used widely. In the fields of new energy vehicles, energy storage power stations, electric bicycles, electric tools, aerospace, medical and digital electronic products. Because of this, lithium battery septum has become one of the key materials for polymer lithium -ion battery production, and even an important part of its industrial chain.

  Demand rapid growth

  According to data from the China Automobile Association, in June, the production and sales of new energy vehicles in China were 86,000 and 84,000, respectively, an increase of 31.7%and 42.9%over the same period last year. 413,000 and 412,000, respectively, an increase of 94.9%and 111.5%over the same period last year. Among them, the production and sales of pure electric vehicles were 314,000 and 313,000, respectively, an increase of 79.0%and 96.0%over the same period last year, respectively. The production and sales of plug -in hybrid vehicles were 10 million and 99,000, respectively, an increase of 170.2%and 181.6%over the same period last year, respectively. The increase in production and sales of new energy vehicles in the first half of the year is calculated. This year, the production and sales of new energy vehicles in my country exceeded 1 million vehicles. The "Three -Year Action Plan for the Blue Sky Defense War" proposes that by 2020, the goal of my country's new energy vehicle production and sales will reach 2 million units, which also means that in the next two years, the annual growth rate of the production and sales of new energy vehicles in my country will It will exceed 30%. Each car requires a battery of 50kWh, and the battery per WH needs 0.01-0.02 square meters of a battery septum conservative estimation. In 2018, my country's new energy vehicles alone will need a lithium battery diaphragm of 5-1 billion square meters, and by 2020, in 2020 It requires a lithium battery diaphragm of 100-20 billion square meters, and the growth potential of lithium battery diaphragms is amazing.

  Due to the production process of the diaphragm has a high technical barrier, its cost accounts for about 10%-20%of the cost of lithium-ion battery, and the gross profit margin can reach 50%-60%. Therefore, the lithium battery diaphragm is also considered by lithium battery manufacturers as one of the most valuable industries in the lithium -ion battery industry chain.


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