“If a certain brand claims that their car can run 1,000 kilometers, can be fully charged in a few minutes, is extremely safe, and is very low cost, then you don’t need to believe it, because this is currently impossible to achieve at the same time. ” These are the exact words of Ouyang Minggao, vice chairman of the China Electric Vehicles Committee of 100 and academician of the Chinese Academy of Sciences, at the China Electric Vehicles Committee of 100 forum.
What are the technical routes of several car companies that have announced a 1,000-kilometer battery life? Is it even possible?
Just a few days ago, GAC Aian also vigorously promoted its graphene battery that only takes 8 minutes to charge and has a range of 1,000 kilometers.NIO announced a 1,000-kilometer battery life at the NIO Dayshang at the beginning of 2021, which also became a hot topic in the industry.
On January 13, the IM Automobile brand released a global announcement, stating that the battery equipped with the IM Automobile will use the "silicon-doped lithium-replenished battery cell" technology jointly developed by SAIC and CATL. The energy density of the battery cell reaches 300Wh/kg, which can achieve a range of 1,000 kilometers. Battery life and zero attenuation for 200,000 kilometers.
Hu Shiwen, product experience manager of IM Auto, said during the question and answer session: "First, regarding CATL, SAIC has already begun to cooperate with CATL and jointly established SAIC Era and Era SAIC. One of these two companies produces batteries, and the other Focus on battery management. The cooperation between SAIC and CATL is patent sharing. SAIC can enjoy the most cutting-edge technologies of CATL for the first time. Therefore, the most cutting-edge technology of silicon doping and lithium supplementation is the first in the world for IM Automobile. "
Due to the Coulombic efficiency (the percentage of discharge capacity and charge capacity) of 811 ternary lithium during the first charge and discharge and the cycle process, the capacity will be significantly reduced. Silicon-doped lithium can effectively improve this problem. Silicon-doped lithium supplementation is to pre-coat a layer of lithium metal on the surface of the silicon-carbon negative electrode, which is equivalent to making up for part of the loss of lithium ions, thus improving the durability of the battery.
The silicon-doped lithium-replenished 811 ternary lithium battery used by IM Automobile was jointly developed with CATL. In addition to the battery pack, in terms of energy replenishment, IM Auto is also equipped with 11kW wireless charging.
With the improvement of cruising range and the gradual improvement of charging infrastructure, more and more pure electric new energy vehicles are beginning to enter the homes of ordinary people.
Recently, the China Association of Automobile Manufacturers released data showing that in 2020, China's new energy vehicles sold a total of 1.367 million vehicles, a year-on-year increase of 10.9%. Among them, the sales of pure electric passenger vehicles exceeded 1 million for the first time, accounting for 10% of the annual passenger vehicle sales. 5%.
As a high-end brand of SAIC Group, IM Auto can be said to be "born with a golden key." Different from other independent brands of SAIC Group, IM Auto has independent shareholders. It is jointly built by SAIC, Pudong New Area and Alibaba. The strength of the three shareholders is evident.
Among the registered capital of IM Automobile of 10 billion yuan, SAIC Group holds 54% of the equity, Zhangjiang Hi-Tech and Alibaba each hold 18% of the equity, and the other 10% of the equity is 5.1% ESOP (core employee stock ownership platform) and 4.9%. % of CSOP (User Rights Platform).
According to the plan, IM Auto's first mass-produced model will accept global reservations during the Shanghai Auto Show in April 2021, which will bring more product details and user experience solutions worth looking forward to.
Post time: Apr-26-2024