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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18650 3.7v battery.Prospects for power lithium-ion battery technology

release time:2023-10-14 Hits:     Popular:AG11 battery

  

  In recent years, driven by my country's new energy industry policy, the new energy industry has ushered in a period of rapid development. As the core component of new energy vehicles, the power lithium-ion battery industry has also ushered in its own highlight moment, with the emergence of companies including CATL, BYD is waiting

  In recent years, driven by my country's new energy industry policy, the new energy industry has ushered in a period of rapid development. As the core component of new energy vehicles, the power lithium-ion battery industry has also ushered in its own highlight moment, with the emergence of companies including CATL, There are a large number of internationally competitive leading power lithium-ion battery companies, including BYD, and CATL has defeated industry giant Panasonic to become the world's number one power lithium-ion battery manufacturer. It can be said that the past ten years have been a glorious decade for my country's power lithium-ion battery industry. So where will my country's power lithium-ion battery industry go in the next ten years?

  As we all know, lithium-ion batteries were first commercialized in Japan. Therefore, Japan has long occupied an important position in the global lithium-ion battery business map. For example, Japan's Panasonic and Yuasa are world-famous lithium-ion battery processors. Among them With the help of Tesla, Panasonic has become the number one company in global shipments. Although the relationship between the two parties has not been harmonious in recent years, Tesla still cannot get rid of Panasonic's influence in a short period of time. Not only that, as a veteran lithium-ion battery powerhouse, Japan can definitely stand out among the others in terms of lithium battery technology reserves. NCA material was developed by Japan and has become the only material that can compete with ternary NCM materials. Relevant studies have stated that the cycle life of NCA materials , NCM materials also have certain advantages related to the dissolution of transition metal elements. In recent years, as the energy density of power lithium-ion batteries continues to increase, NCA materials with higher capacity have gradually attracted the attention of power lithium-ion battery manufacturers, and NCA material processing technology is currently in the hands of Japanese manufacturers, such as Sumitomo Chemical, Nippon Chemical and Toda Chemical are important global suppliers of NCA materials. Korean manufacturers Ecopro and GSEM also sell a small amount of products. Although domestic raw material manufacturers have also begun to make efforts in NCA materials in recent years, some technical indicators and related In terms of patents, there is still a big gap compared with Japan.

  South Korea has closely followed Japan in lithium-ion battery technology, and internationally leading power lithium-ion battery manufacturers such as Samsung SDI, SK Innovation, and LG Chem have emerged. According to data recently released by Korean market research agency SNE Research, it will be the first in 2020. In the quarter, LG Chem's share of the global power market jumped from 10.7% to 27.1%, surpassing Panasonic and CATL and becoming the world's largest power lithium-ion battery manufacturer for the first time. Samsung SDI ranked fourth with a global market share of 6%. , SK Innovation ranks 7th with a market share of 4.5%. South Korean power lithium-ion batteries are using the European and American markets as a position to develop the global power lithium-ion battery market.

  Low temperature lithium iron phosphate battery 3.2V 20A -20℃ charging, -40℃ 3C discharge capacity ≥70%

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  my country's power lithium-ion battery market has achieved rapid development with the support of new energy vehicle industry policies. Representative power lithium-ion battery manufacturers such as CATL and BYD have emerged. Although CATL's shipments in the first quarter of 2020 It was overtaken by LG, but before that, CATL had ranked first in global power lithium-ion battery shipments for three consecutive years, accounting for half of my country's power lithium-ion battery market. In February this year, CATL won the Tesla’s “big order” will soon return it to the top spot in global shipments.

  At present, the global power lithium-ion battery market has basically formed a three-legged pattern of China, Japan and South Korea. Among them, my country is the most dynamic power lithium-ion battery market in the world. In 2017, my country's market power lithium-ion battery production reached 88.7GWh, with an annual increase The rate reached 29.3%, of which power lithium-ion batteries accounted for 44.5GWh, surpassing traditional 3C consumer electronics and becoming the main force in the lithium-ion battery market.

  With the rapid development of the power lithium-ion battery market, traditional LCO materials are gradually being replaced by ternary cathode materials. Many new energy vehicle manufacturers, including Tesla, have adopted the ternary system in order to extend their cruising range. Power lithium-ion batteries, among which Tesla uses the 18650 batteries and 21700 batteries of the NCA system supplied by Panasonic of Japan.

  The reason why ternary materials are called ternary materials is because there are mainly three transition metal elements. There are currently two mainstream ternary materials: LiNixCoyMn1-x-yO2 (NCM) and LiNixCoyAl1-x-yO2 ( NCA), the capacity of ternary materials increases with the addition of nickel content. The specific capacity of NCM622 material can reach about 170mAh/g, and the specific capacity of NCM811 material can reach more than 190mAh/g, which is much higher than traditional LCO materials. At the same time, the Co content in ternary materials has been greatly reduced, which has significantly reduced the price of the materials. At the same time, ternary materials have better cycle life than LCO materials. These advantages have made ternary materials quickly establish themselves in the field of power lithium-ion batteries. Steady footing.


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