What are the characteristics of Tesla's battery pack development?

With the fires of lithium batteries and new energy vehicles in the past two years, and the recent small disasters in the stock market, the lithium battery sector has gradually climbed out of the quagmire and has attracted market attention. As a new energy vehicle is relatively complicated, there are many standards, and detailed classification and comparison of prices. The author, as a former electronic and electrical professional technician, makes us simple and effective in terms of lithium batteries, which is simple and easy to understand , There is no further research. The leader of new energy vehicles is Tesla. Technology and market are the leaders. Therefore, learning from Tesla is the first step in learning in the field of new energy. The knowledge of lithium batteries also began with the lithium batteries of Tesla Motors. In addition to electric motor technology, Tesla's performance is as good as traditional gasoline-powered cars, thanks to its advanced battery technology. As one of the core technologies of electric vehicles, what are the characteristics of Tesla’s battery pack development? This is the battery pack used in Tesla cars: this is a sealed appearance, 900 kg, which accounts for almost half of the car’s mass. And the battery is undoubtedly the core. Look at this: It turned out to be an ordinary 18650 lithium battery, which is an ordinary lithium battery for laptops and mobile power supplies. The Tesla model has at least 7,104 18650 lithium batteries packed into battery packs. Of course, the actual structure is more complicated, and many problems such as connection, heat dissipation, and explosion-proof have to be solved. What is this damn 18650 lithium battery? Read on. 18650: Indicates that the battery has a diameter of 18 mm and a length of 65 mm. A typical AA battery is 14,500, with a diameter of 14mm and a length of 50mm. Generally, 18650 lithium batteries are used more in industry and less in civilian use. They are also used in notebook batteries and high-end flashlights. In other words: 18650 is the size of the battery. According to the type of battery, it can be divided into 18650 lithium ion (the most common), lithium iron phosphate 18650 (second), and nickel hydrogen 18650 (the least). Now, the 18650 lithium battery is almost clear. What are the benefits of this model? First of all, it must use lithium (Li) as an important material, and the lithium battery is light in weight, large in capacity, and has no memory effect. Before, the 1980s should be impressed), the widely used digital devices are powered by lithium batteries. The biggest advantage of the lithium battery is its high energy density, the capacity is 1.5 to 2 times that of the nickel-hydrogen battery of the same weight, and the self-discharge rate is very low. In addition, lithium batteries have almost no memory effect and no toxic substances, which is an important reason why lithium batteries are widely used. Another advantage is that the 18650 lithium battery can theoretically be charged 800 times. According to Tesla's standard version, the theory is that the battery should be charged at 370 kilometers. In fact, considering battery loss and temperature, 300 kilometers is appropriate. The author drives 50 kilometers a day, and takes his family to play on weekends and holidays, about 100 kilometers. Throughout the year, 400 kilometers per week and 20,000 kilometers per year, the battery pack can be used for 8 years. To make a simple summary: 18650 lithium battery has the characteristics of large capacity and long life. As the first lithium battery, the 18650 battery is currently the most mature and stable battery pack in the world, and it still occupies a leading position. Billions of years of processing 18650 batteries, the number of batteries is better than other materials. New energy vehicles are powered by 18650 batteries, which is the best choice at this stage. Therefore, if you want to invest in the stocks of the new energy automobile industry, you can start with the core battery pack, learn 18650 related knowledge, and then transfer to the vehicle, motor and other subdivisions. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Briefly describe the shortcomings of lithium iron phosphate batteries