There is no doubt that Tesla is currently the most popular and advanced all-electric vehicle manufacturer. Since its launch in 2012, it has been proved that electric vehicles can be used for daily driving as long as reliable and rich charging networks are provided in place. Before Model S, electric vehicles were considered city cars at best. As Model S is about to be released for 10 years, it is surprising that it has witnessed the development of battery technology.
The battery technology is also constantly developing, from the three-dimensional dimensions such as capacity, packaging form, charging speed and so on. Earlier, the high-energy-density ternary lithium battery brought super long battery life and stronger performance, but it was slightly inferior in safety, and now battery technology has entered a balanced stage of pursuit of performance and safety. In terms of endurance, from 100 kilometers to 300 kilometers, and then from 400 kilometers to 500 kilometers, even the new generation models have crossed to 600 kilometers, mileage anxiety is no longer a problem.
BYD blade battery gives new vitality to lithium iron phosphate technology.
BYD considers battery safety in seven dimensions and four levels, and has corresponding protective measures in each dimension and level. Among them, the four levels refer to monomers, modules, battery packs, and systems. The seven dimensions include reliable connection, high voltage protection, collision, overcharge, short circuit, and thermal runaway, which effectively protect the battery in all directions. In addition, in terms of the service life of the battery cell, a blade battery that can reach 1.2 million kilometers at most for 8 years also has advantages over a ternary lithium battery that can only achieve about 1,000 cycles.
The BYD blade battery uses a square-shell long battery cell with a flat design and a maximum length of 2.5 meters, which is more than 10 times that of traditional lithium iron phosphate batteries. And adopts GCTP packaging technology, which can directly integrate the battery cells into the battery pack, thereby eliminating the intermediate module link, improving the utilization rate of the battery pack in the package, and increasing the battery capacity.
Therefore, from the “1 + 1 + 1” mode composed of "space utilization", "volume energy density" and "heat dissipation", BYD's "blade battery" has both the high energy density of the ternary lithium battery and the lithium iron phosphate battery security.
CATL ternary lithium battery is still the industry choice.
In the declaration information published by the Ministry of Industry and Information Technology, the domestic Model 3 will be equipped with lithium iron phosphate batteries from the Ningde era for the first time. This Model 3 using domestic batteries should be the standard endurance version, and the price should continue to be cheap. Previously, the domestic Model 3 was equipped with ternary lithium batteries from LG in South Korea and Panasonic Corporation in Japan. The battery pack made CTAL in China was 30% to 45% cheaper than imported ternary lithium batteries.
In addition, the Ministry of Industry and Information Technology has shown that the new car BMW iX3 is equipped with the NCM811 ternary lithium battery coded by Ningde era, and the NEDC battery life is expected to exceed 500 kilometers. The Audi e-tron new car is equipped with front and rear dual motors with maximum powers of 115 kW and 172 kW, respectively, and also uses the ternary lithium-ion battery provided by the Ningde era.
The cobalt-free battery released by Svolt Energy becomes a sweet bun.
Svolt Energy was the first to release two cobalt-free batteries, which are scheduled to be launched in the market as early as June 2021. One battery has a NEDC operating range of up to 880 kilometers. The predecessor of Svolt Energy Technology Co., Ltd. was Great Wall Motor Power Battery Business Unit, which was completely divested from Great Wall Motors in 2018 and became Svolt Energy Technology Co., Ltd. The company is mainly engaged in the research and development and product manufacturing of battery materials, batteries, modules, battery systems, and BMS.
The emergence of cobalt-free batteries has well solved the demand of ternary lithium batteries for cobalt elements, which can reduce the production cost of batteries and allow consumers to really benefit when buying and using cars.
On the whole, the battery technology of new energy vehicles has been greatly improved in the past few years. We have reason to believe that more powerful technologies will appear in the future. With the upgrade of battery technology, the anxiety of mileage of electric vehicles will be basically eliminated, and the overall cost of using cars will also be reduced. We also hope that battery technology will accelerate the entire era of electric vehicles.