Tesla's new battery production line debuts!

Tesla recently demonstrated its 4680 new battery and a battery production line called Roadrunner for the first time, and said that this production line will be used in super factories in Texas and Berlin. Its chief executive, Elon Musk, stated that 'complete electric cars will be produced in the same way as toy cars.' Netizens commented after watching the video: Musk loves bragging, but he has achieved all the bragging. If you still have an impression, we have previously reported: On September 23, 2020, at the Tesla shareholder meeting and battery day event, Tesla released the latest 4680 with no electrode, silicon anode, and cobalt-free technology. Battery. The electrodeless battery core, through the laser technology to remove the convex electrode structure of the traditional battery. The so-called tab is the metal conductor that leads the positive and negative poles from the battery. In other words, it is the contact point between the positive and negative poles of the battery during charging and discharging. The current must flow through the tab to connect to the outside of the battery. . However, having tabs will increase the internal resistance of the battery cell, causing excessive heat when the battery is charged, affecting battery life, and also bringing safety issues such as self-ignition. Andrew Baglino, head of Tesla's powertrain and energy engineering department, introduced five measures to solve battery problems: cell design, cell factory, anode materials, cathode materials, and vehicle integration. In terms of size, the electrodeless battery has a diameter of 46mm and a height of 80mm, so it is named 4680. It can be seen that the 4680 battery is larger, but the power is six times that of Tesla's previous battery, and the energy density is five times that of the previous battery. Like other large-volume battery designs, the 4680 also faces the problem of thermal management. However, the cylindrical 4680 directly takes off the clothes to dissipate heat! At the same time, the cost per kilowatt hour of 4680 was reduced by 14%. To be comparable to fuel vehicles, the cost of battery production per kilowatt-hour should be reduced to about $100, and Tesla's 4680 is very close to this goal. The 4680 battery was put into production at a pilot plant in Fremont, which is what we saw in the video today. Musk estimates that it will take Tesla about a year to reach the 10GWh target. Tesla will also use new materials instead of complex post-processing to design batteries that can withstand anode loss, so that the anode alone can reduce the cost per kilowatt-hour by 5%. Gigafactory is upgraded to Terafactory, reaching 3 TWh in 2030. At the same time, Musk mentioned that Tesla's ultimate goal is to achieve 'terawatt hour' (TWh) battery production. Tera means one trillion, which is 1,000 times the gigabit. At present, Tesla's short-term goal is to reach 100GWh per year by 2022 and 3TWh per year by 2030. This production efficiency, coupled with the capacity of the new battery, will reduce the cost per kilowatt hour by 32% by 2022. The production process of the Tesla battery factory has also ushered in a revolutionary change, and the battery production now looks more like filling Coke. In general, the energy density of the new '4680' battery has increased by 5 times, the cruising range has increased by 16%, and the power has increased by 6 times. At the same time, the speed of the Tesla battery production line has increased by 7 times due to the solution of the continuous production problem. Vertical integration, fast running in small steps, and persistence in innovation are all the secrets for Tesla to keep winning. When other companies thought they could catch up with Tesla, Tesla easily left everyone behind. This is suppression. The most expensive part of an electric car is the battery pack, and the cruising range directly depends on the quality of the battery. Due to better battery quality and advanced electric vehicle technology, Tesla has achieved a considerable lead in this field, but there is still much room for improvement. Tesla CEO Elon Musk said: 'The production of batteries is an important issue that really limits the development of sustainable energy in the future.'