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CATL releases new battery products and technologies at its first Technology Day
By HY-MeganApril 22nd, 2025779 views
On April 21, 2025, CATL released a series of new battery products and technologies at its first Technology Day to consolidate its industry leadership. Highlights include the second-generation super-chargeable battery, the "NaXin" sodium-ion battery series, self-generated negative electrode technology, and a new "dual-core" battery architecture that integrates the above innovations.
1.Second-generation Shenxing Taking into account 800 km of driving range and 12C supercharging CATL first launched the second-generation Shenxing supercharging battery. Based on the lithium iron phosphate chemical system, the second-generation Shenxing battery can provide 800 kilometers of driving range, while supporting a peak charging rate of up to 12C, corresponding to a charging power of 1.3MW, and achieving 520 kilometers of energy replenishment in 5 minutes. This performance index exceeds the second-generation blade battery released by BYD in early March. CATL also emphasized that the second-generation Shenxing battery can provide strong power in the full temperature range and full SOC (remaining power) range, and still has an output power of 830kW even in the low-power state; in the harsh environment of low-power at a low temperature of minus 10℃, it can still meet the power demand for acceleration from 0 to 100 kilometers. 2."NaXin" sodium battery Energy density reaches 175Wh/kg, no attenuation at -40℃ CATL also launched the "NaXin" sodium-ion battery brand, including NaXin passenger car power battery and NaXin 24V heavy truck start-stop integrated battery. Both products claim to be able to operate in extreme temperature ranges from -40℃ to +70℃. Among them, the NaXin passenger car battery can still maintain 90% of the available power at -40℃, and in the extreme state of only 10% SOC, the vehicle power is basically not attenuated at -40℃. The battery has an energy density of 175Wh/kg (corresponding to a range of 500 kilometers), which is comparable to lithium iron phosphate batteries; it also supports a peak 5C charging rate and a cycle life of more than 10,000 times. In terms of safety, the NaXin battery eliminates the combustion factors in thermal runaway from the intrinsic level of the material, achieving a breakthrough from "passive defense" to "intrinsic safety". The new sodium 24V starter battery for heavy trucks has a service life of more than 8 years, and the total life cycle cost is 61% lower than that of traditional lead-acid batteries. The battery has the advantages of full-capacity deep discharge, one-button start at minus 40℃, and can still be started after being left for a year, aiming to promote commercial vehicles into a new stage of higher efficiency, environmental protection and economy. 3.Self-generated negative electrode Lithium metal technology that breaks through the bottleneck of circulation At the conference, CATL also introduced a "self-generated negative electrode technology". This technology increases the ion conduction speed by two orders of magnitude by precisely controlling the nano-level interface components and structures. The key to this technology is that it can achieve dense and uniform deposition of metal elements on the interface, reducing the active ion consumption rate by nearly 90%, corresponding to a 300% increase in battery storage performance, and ultimately achieving the effect of slowing down battery degradation and extending battery cycle life. 4."Dual-core" architecture Customized combination of ultra-long battery life and ultra-high rate Based on the above products and technologies, CATL has further launched the "dual-core architecture". This dual-core architecture has five core functional features. (1) The high-voltage dual-core uses independent energy units (usually a combination of high-energy density and high-rate batteries). In the event of an extreme fault, the BMS can complete fault cutting and energy reconstruction in milliseconds. Through physical and electrical dual isolation and topological reorganization technology, it ensures that the high-voltage power supply is not interrupted. (2) The low-voltage dual-core provides redundant power supply for the critical 12-volt system. Once a fault occurs, it can be switched seamlessly within milliseconds to ensure that the core low-voltage functions such as lighting and steering can operate stably with zero degradation. (3) The structural dual-core draws on the concept of aerospace compartment division to achieve physical isolation and functional backup. Even if part of the structure is damaged, the overall function can be maintained to ensure that the vehicle continues to drive, setting a new standard of "structural damage does not mean functional failure". (4) The thermal management dual-core supports independent and differentiated temperature control of different areas in the battery pack. (5) Thermal runaway safety protection The dual-core adopts an original partition isolation plus active defense mechanism, which can quickly and directional exhaust and isolate the faulty unit when the battery cell is in thermal runaway, ensuring that the rest of the parts operate "without interference in the whole area", thus reconstructing the thermal runaway protection system.
