On October 24, CATL released the world's first pure electric hybrid battery with a battery life of more than 400 kilometers and 4C supercharging in Beijing - the Freevoy super hybrid battery, fully opening the "large battery" era of hybrid batteries.

Redefining new standards for hybrid batteries and creating an all-around "hexagonal warrior" Freevoy

As hybrid models gradually become the main force in the new energy vehicle market, the negative experience of pure electric driving in hybrid models has become increasingly prominent. Pain points such as short battery life, slow energy replenishment, and low temperature attenuation have become key challenges.

The CATL Freevoy super hybrid battery allows car owners to say goodbye to the trouble of frequent charging caused by the short pure electric range of traditional hybrid models, achieving "one charge, a week of commuting"; on the other hand, Freevoy, with its "10-minute charge, The excellent performance of "recharging energy over 280km" has solved the energy replenishment anxiety of hybrid vehicle owners.

Behind the outstanding battery life and supercharge performance are continuous breakthroughs in technology research and development. Gao Huan, CTO of CATL’s domestic passenger car division, introduced in detail the technical innovation of Freevoy’s super hybrid battery at the press conference.

The Freevoy battery uses positive electrode material surface modification technology, combined with an innovative high-voltage electrolyte formula to form a "nano-scale protective layer", which effectively reduces side reactions in the active layer. Highly active excited state particles are also introduced into the cathode material, which greatly improves the transmission efficiency of lithium ions in the material. CATL also built a full-scenario high-precision model of SOC, improving SOC control accuracy by 40%. Material innovation combined with BMS intelligent algorithm optimization has increased the overall pure electric usage rate of Freevoy batteries by more than 10%, achieving a pure electric range of more than 400km. In addition, CATL created a multi-level battery power prediction control strategy by modeling the battery charge and discharge polarization characteristics, which further improved the power performance of hybrid vehicles by 20%.

In addition, CATL has also "replicated" the 4C supercharging technology on the Freevoy battery, enabling "charging in 10 minutes and replenishing energy over 280km." Positive electrode fast ion conductor coating technology, negative electrode second-generation fast-charging graphite and new nano-coating technology, multi-gradient layered pole piece design and new ultra-high conductive electrolyte formula make the penetration of lithium ions "enjoy silky smoothness" ”, allowing hybrid models to enjoy the ultimate charging experience like pure electricity.

CATL sodium-ion battery technology has also been applied to the Freevoy super hybrid battery this time, breaking the low-temperature limitations of new energy vehicles and enabling discharge in extremely cold environments of minus 40 degrees Celsius, recharging at minus 30 degrees Celsius, and recharging at minus 2 degrees Celsius. Ten degrees is no different from the driving experience at normal temperature.

In order to further improve the low-temperature performance of Freevoy batteries, CATL has made three aspects of technological innovation around sodium-ion battery technology.

Relying on CATL's pioneering AB battery system integration technology, the Freevoy battery pack mixes, matches, and arranges sodium-ion batteries and lithium-ion batteries in a certain proportion and arrangement to achieve a 5% increase in low-temperature battery life. Secondly, CATL uses sodium-ion batteries as the SOC monitoring scale of the AB battery system to assist in calibrating the power of the lithium-ion batteries, which improves the overall control accuracy of the system by 30% and increases the pure electric cruising range by more than 10km. In view of the difference in low-temperature performance of lithium-ion batteries and sodium-ion batteries, CATL has also developed a full-temperature domain accurate power calculation BMS technology to perform targeted partition management of different chemical systems in all-weather scenarios, effectively solving the problem of power prediction in high and low temperature harsh environments. Issues such as distortion or power performance degradation.

The high performance and super strength of Freevoy super hybrid battery are based on high reliability and high safety. Starting from raw material screening and molecular design, CATL has built a reliability management and evaluation system that includes multi-level protective structures, extreme manufacturing processes, all-round testing and verification, and big data early warning.

At present, Freevoy batteries have been successfully launched in multiple vehicle brands, including Ideal, Avita, Deep Blue, Qiyuan, and Nezha. It is expected that by 2025, nearly 30 hybrid models including Geely, Chery, GAC, Lantu, etc. will be equipped with CATL Freevoy super hybrid batteries.

The release of the Freevoy super hybrid battery is another industry innovation brought about by CATL's insistence on creating a high-quality travel experience for users. In the future, CATL will bring users a more extreme new energy experience through continuous technological innovation and accelerate the process of comprehensive electrification.