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1. The 18650 battery is cylindrical with transparent liquid inside. This is due to the battery concept and material. 18650 is suitable for high current, so that almost all laptops and electric cars are basically designed with 18650 batteries; only super notebooks, This is due to environmental protection and energy saving, so polymer lithium-ion batteries can be used instead of 18650 batteries, especially for tablet computers, etc. Digital cameras are due to the large voltage and instantaneous high current required for charging and discharging of the photo flash, so only 18650 can be used. Similar batteries, only slightly smaller;

The "2016 Third China Lithium Battery Industry Summit and Data Conference for Top 100 Lithium Battery Enterprises", sponsored by the lithium power big data and co organized by the electric big data and starting point research, with the theme of "discovering trends and grasping the future", was grandly held in Sheraton Grand China Shenzhen Hotel. More than 400 CEOs and leaders from various subdivisions of the national lithium battery industry chain attended to jointly explore the development trend of the lithium battery industry and grasp the new trend of the lithium battery industry in the future. Through industry interaction, we will promote better collaboration between upstream and downstream of the industry chain, and bring greater breakthroughs and breakthroughs to China's lithium battery industry chain. At this summit, Zhou, Head of Research and Development of Haisida Power

Lithium ion batteries have been widely used in notebook computers, video cameras, mobile communications and other portable appliances due to their unique performance advantages. At present, the large capacity lithium ion battery developed has been put into trial use in electric vehicles, and is expected to become one of the main power sources of electric vehicles in the 21st century, and be applied in artificial satellites, aerospace, energy storage and other fields. So, what are the main advantages of lithium batteries for electric vehicles?

In recent years, more and more new energy vehicles have entered people's lives. According to relevant data, by the end of 2020, the number of new energy vehicles in China has reached 4.92 million, accounting for 1.75% of the total number of vehicles, an increase of 1.11 million over 2019, or 29.18%. In addition, the growth of new energy vehicles has exceeded 1 million for three consecutive years, showing a trend of sustained and rapid growth, which indicates that the industry has a good development trend.

Japan's Nikkei Shimbun reported on December 9 that Toyota is developing a solid state battery, which can run 500 kilometers once charged, and takes 10 minutes to fully charge, at least two-thirds less than traditional electric vehicles. Toyota is expected to become the world's first manufacturer of solid state battery vehicles in mass production, and will launch prototype vehicles next year.

The battery manufacturing process is mainly divided into two technical routes: lamination process and winding process. At present, the main technical direction of Chinese battery enterprises is mainly around winding, but with the progress of lamination technology, a large number of battery enterprises begin to enter the lamination field.