On September 23rd, Beijing time, "Tesla Battery Day" was held in Tesla fremont Super Factory.
on this battery day, Tesla focused on a number of innovative technologies such as battery design, battery factory, anode materials, cathode materials and vehicle manufacturing, and released Plaid? Model? S model, showing Tesla's latest achievements in the field of sustainable energy.
brand-new 468 electrodeless battery: In order to rapidly expand the production scale, significantly reduce the battery cost and greatly improve the cruising range, Tesla developed a brand-new 468 electrodeless battery with a height of 8mm and a diameter of 46mm. Compared with the traditional lithium battery, there are no protruding tabs at both ends of the battery. This design can significantly reduce the calorific value, solve the heat dissipation problem of high energy density batteries, and improve the peak power of charge and discharge. Finally, the energy and power of the new battery are 5 times and 6 times of the past, while the cost is reduced by 14% and the cruising range is increased by 16%.
Raw silicon anode material: Tesla selects raw silicon material with good energy storage effect, redevelops the battery anode, and stabilizes the silicon surface structure by adding elastic ionic polymer coating, thus improving the stability and safety of the battery. This technology can increase the cruising range by 2% and reduce the cost by 5%.
cobalt-free high-nickel cathode material: cathode material is very important to improve energy density, so Tesla developed a cobalt-free high-nickel cathode material to maximize nickel content, and at the same time adopted new coatings and dopants to reduce cathode cost by 15%.
Brand-new battery factory: The new 468 electrodeless battery has simpler manufacturing process and fewer parts because it does not need to install and weld the lugs. To this end, Tesla has built a new production line, which has 7 times the production capacity of the previous production line, which can significantly improve production efficiency, while the investment cost per kilowatt-hour capacity is reduced by 75%, providing favorable conditions for rapid expansion of production scale.
vehicle manufacturing: Tesla has developed a brand-new vehicle body structure, which designs the battery pack as a vehicle body structural member and integrates the battery pack and the front and rear parts of the vehicle body. This structure brings an ultra-high-strength vehicle body, and the weight distribution of the vehicle is closer to the center, which brings more flexible handling. In order to realize this design, Tesla specially developed an unprecedented new formula alloy material to strengthen the strength of the car body. This body structure will increase the cruising range by 14%, reduce the overall structure weight by 1% and reduce 37 parts.
Through systematic combination innovation, Tesla's battery cost per kWh is reduced by 56%, its cruising range is increased by 54%, and its investment and production cost is reduced by 69%. However, it will take Tesla about 18 months to form the above advantages, and it will take about three years to fully realize them. At the same time, based on the significantly reduced production cost, Tesla is confident to develop an electric car with a price of about $25, within three years.
in addition, on battery day, Tesla unveiled Plaid? Model? S。 The new model will be delivered next year, with a maximum power of more than 1,1 horsepower and a quarter-mile acceleration time of less than 9 seconds, which exceeds the world's top internal combustion engine supercar.
Tesla has always taken "accelerating the transformation of the world to sustainable energy" as its mission, hoping to accelerate the replacement of fuel vehicles by expanding the competitiveness of electric vehicles, improve traffic efficiency and safety, and build a future traffic system. As a technology pioneer and innovator focusing on energy innovation, Tesla will continue to develop advanced battery technology to accelerate the realization of this goal.
This article comes from the author of Chejia, car home, and does not represent car home's standpoint.