Why is the use of 21700 batteries more and more widespread?

Why is 21700 more and more popular? Since Tesla Model 3 began to replace the previous 18650 battery with 21700 lithium battery, many friends must have found that the 21700 battery is more and more widely used. We have more and more 21700 batteries on hand. Looking back, it seems that we are not far from using 18650 batteries. Although the 18650 battery is still in use, the mass production of the 21700 battery cannot be ignored. What caused the No. 21700 battery to catch fire? Today, we will dissect it with everyone. What is a 21700 battery? A 21700 battery means a cylindrical battery with an outer diameter of 21mm and a height of 70.0mm. Companies in South Korea, my country, the United States and many other countries are using this type. XTAR now sells two 21700 batteries, 217004200mAh and 217003750mAh. There will be a larger capacity of 217005000mAh. 21700 battery When it comes to the 21700 battery, Tesla has to mention it. The 21700 battery was originally developed by Panasonic for Tesla. At the investor meeting on January 4, 2017, Tesla announced that 21,700 new batteries jointly developed with Panasonic have begun mass production, which will be processed at the Gigafactory superbattery factory. Tesla CEO Elon Musk said that the energy density of 21,700 batteries is the highest in the world, the cost is also the lowest, and the price is more affordable. On July 28, 2017, the first Tesla Model 3 equipped with 21,700-cell batteries was delivered, becoming the world's first 21,700-cell all-electric passenger car with a minimum price of 35,000 U.S. dollars. 21,700 batteries make Model 3 Tesla's cheapest car to date. It can be said that Tesla Model 3 is completely powered by 21,700 batteries, opening a new stage of cylindrical battery capacity. Introduction to the advantages of 21700 battery: 21700 battery has a higher energy density than 18650 battery, and the number of single batteries used can be significantly reduced. The energy density of the 21700 battery system of Model 3 is about 300Wh/kg, which is more than 20% higher than the 18650 battery used in the original model s, and the energy density of Model 3 is 35% higher than that of the 18650 battery. The cost of the system has been reduced by approximately 9%. From the beginning, 21,700 huge advantages have attracted widespread attention and research in the industry. It can be imagined that the capacity of an 18650 battery is approximately 2600-3600 mAh, and the capacity of a 21700 battery is more than 4000 mAh. Currently, the market has shown 217005000mAh. And the larger the capacity, the more conducive to extending the durability of modern equipment. 21700 battery uses 21700 battery due to its energy density advantages, will be widely used in the future market. On August 4, 2017, the GB/t34013-2017 'Product Specifications and Scale of Accumulators for Electric Vehicles' published by the National Standards Committee clearly included 21,700 specifications and scales. This means that new energy vehicles using 21,700 batteries across the country will receive policy support. In addition, it is more convenient for battery manufacturers to move from the original mainstream 18650 to 21700, and will not invest excessively high equipment technology upgrade costs and new equipment investment. Some experts speculate that 21700 batteries will usher in a rising period in the future. Now stop, in addition to XTAR, China Wanwei Lithium Energy, Smart Energy and Shenyang have deployed 21,700 battery products. In addition to new energy vehicles, 21700 has also begun to be used in chargers, e-cigarettes, flashlights, handheld PTZ and other devices. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Why is the maximum capacity of the lithium battery decreased?