In October 2024, Contemporary Amperex Technology (CATL) launched the 'Freevoy Super Hybrid Battery' onto the market. According to the manufacturer, it is the world's first e-vehicle battery that enables a purely electric range of over 400 km and super-fast 4C charging.
According to CATL, unsatisfactory experiences of e-car users with short range, long charging times and reduced performance at low temperatures have been overcome. Freevoy uses a surface modification technology of the cathode material in combination with a novel high-voltage electrolyte formulation to create a nano-protective layer. According to the manufacturer, this effectively minimizes side reactions within the active layer. By integrating highly active particles in the excited state into the cathode material, the transport efficiency of lithium ions within the material is significantly improved. The SOC (state of charge) full-scene model and an improvement in the intelligent BMS (Battery Management System) algorithm and hardware have increased Freevoy's SOC control accuracy by 40% and increased the overall pure electric utilization rate by more than 10%, enabling the manufacturer to achieve a pure electric range of more than 400 km.
At the same time, the manufacturer conducted a model data analysis of the charge-discharge polarization characteristics of the battery to more accurately predict the future discharge capacity of the battery, and developed a multi-stage prediction on the power and control strategy for the battery, which increased the performance of the electric vehicles by approximately 20%.
In addition, 4C charging technology was implemented in Freevoy, achieving a range of over 280 km with a charging time of just 10 minutes. The lithium-ion transport is achieved by applying the coating technology for the fast ion conductor at the cathode.
According to CATL, the fast-charging technology with innovative graphite and nano-coating technologies for the anode and a particularly conductive electrolyte formulation made this progress possible in the first place. Sodium-ion battery (SIB) technology, which is also used in the Freevoy, breaks through the low-temperature restrictions of electric cars and enables discharging in extremely cold environments down to -40°C. Charging is possible down to -30 ° C. CATL specifies the lower temperature limit for 'normal' operation of the battery as -20 °C.
