In the realm of electric vehicles (EVs), the competition between Lithium Iron Phosphate (LFP) batteries and Nickel-Cobalt-Manganese (NCM) batteries has been a focal point. With inherent advantages such as safety and long lifespan, LFP batteries have seen a resurgence since 2021, overtaking NCM batteries in market share.
Traditionally, LFP batteries were often viewed as "conservative" due to their lower energy density and charging efficiency. However, as technology advances in battery systems, these perceptions are being challenged. The high-performance lithium battery is now showing remarkable potential.
A major milestone was achieved by VREMT, a renowned domestic power battery supplier, with the launch of their 800V EV battery. This innovation marks a significant leap forward for battery packs used in electric vehicles. Not only has the charging speed been dramatically improved, but the discharge performance now rivals that of NCM batteries. This opens up new possibilities for LFP batteries in high-performance vehicles, particularly in PHEV solutions.
One of the standout features of VREMT's 800V battery pack is its ultra-fast charging speed. The liquid-cooled battery achieves a charging rate of up to 4.5C, enabling the vehicle to gain over 500km of range in just 15 minutes. This nearly matches the speed of refueling a traditional car, effectively alleviating range anxiety for EV users.
Beyond charging speed, the discharge performance of this high-voltage battery pack is equally impressive. With a 3-second pulse discharge rate of 16C, vehicles can achieve 0-100 km/h acceleration in just 3 seconds. This remarkable acceleration capability highlights the power of VREMT's Triple-stack module in providing an unprecedented driving experience, positioning vehicles like the Zeekr 007 among the fastest mid-sized sedans globally.
VREMT's breakthrough in the 800V battery is attributed to two core technological innovations. Firstly, the company pioneered lithium-ion acceleration technology. This involves the design of nanoscale LFP particles and composite conductive agents, the introduction of ultra-fast dissociation electrolytes, and a three-layer composite porous membrane. Additionally, the design of multi-gradient electrode sheets and the application of a low-impedance SEI film further enhance the efficiency of lithium-ion generation and transfer within the EV battery system.
Secondly, VREMT introduced a dual-rivet pole structure and stacked multi-tab design in the battery cell. This significantly improves the current-carrying capacity within the battery pack, much like expanding the lanes and adding ETC channels on an electronic "highway." This design not only boosts the charging efficiency of the EV battery but also optimizes the thermal management performance of the automotive battery during fast charging, ensuring even heat distribution and efficient temperature control.
While material properties may impose physical limitations, the innovation in battery systems knows no bounds. VREMT's 800V battery represents a bold challenge to the limits of LFP battery performance and a profound exploration of the future direction of the EV industry.
As technology continues to advance, electric vehicles will become more intelligent and efficient, thanks to the relentless innovation of power battery suppliers like VREMT. High-quality PHEV solutions will undoubtedly make travel more convenient and environmentally friendly.