NIO ES9 Features Self-Developed 48V Integrated Fully Active Suspension System

On May 27, at the ES9 launch event, NIO announced that the vehicle is equipped with its self-developed Tianxing 48V integrated fully active suspension system. Li Bin, founder of NIO, stated that the company began researching fully active suspension technology a decade ago and bypassed the conventional 400V/800V discrete architecture, opting instead for a 48V integrated solution. Although this approach entails higher costs and greater production complexity, it delivers superior safety and a better user experience. 48V represents the voltage standard of next-generation electronic and electrical architectures. Currently, only a few intelligent electric vehicles—such as the Tesla Cybertruck, NIO ET9, and now the ES9—adopt this standard. NIO previously pioneered mass production of a 48V power supply system with the ET9, and the ES9 adopts the same architecture. This architecture supports dual-circuit power redundancy across the entire vehicle and powers the fully active suspension via 48V, significantly reducing voltage-related risks for occupants. According to Li Bin, the integrated fully active suspension outperforms discrete solutions across five key dimensions: agility, precision, energy efficiency, quietness, and comprehensiveness. The system reduces connecting piping by 95%, shortens operational latency by 67%, and achieves a control response time of no more than 6 milliseconds, substantially enhancing control accuracy. Its compact actuator units are mounted near the wheels and positioned away from the passenger cabin, ensuring cabin quietness remains unaffected. The system also features a more efficient mechanical force transmission path, lower power consumption, and an instantaneous peak energy recovery capability of 8,000 watts.