Nio ET9

Nio ET9
Overview
Manufacturer	Nio
Production	2025 (to commence)
Assembly	China
Body and chassis
Class	Full-size luxury car (F)
Body style	4-door liftback
Layout	Dual-motor, all-wheel-drive
Platform	NT 3.0
Powertrain
Electric motor	340 kW permanent magnet synchronous 180 kW AC induction
Power output	697 hp (520 kW; 707 PS)
Battery	100 kWh
Electric range	650 km (404 mi) (CLTC)
Plug-in charging	600 kW DC
Dimensions
Wheelbase	3,250 mm (128.0 in)
Length	5,325 mm (209.6 in)
Width	2,017 mm (79.4 in)
Height	1,621 mm (63.8 in)

The Nio ET9 is a battery-powered full-size sedan produced by Chinese electric car company Nio. ^[1] It is the first Nio vehicle to use the NT 3.0 platform and self-developed Shenji autonomous driving chip, and serves as the brand's flagship vehicle. It is also the first production car to use steer-by-wire technology and a fully 900 V electrical architecture in China. ^{[2] [3]}

Overview

A pre-production version of the Nio ET9 was initially revealed in China on December 23, 2023 at the 'Nio Day 2023' event at Xi'an's Olympic Sports Center, after which pre-orders for the ET9 opened with delivery scheduled for March 2025. ^[4] At the 'Nio Day 2024' event held at Guangzhou on December 21, 2024, the production version of the ET9 was revealed with notable changes to its design, along with significantly more information about features and pricing. ^[2]

The ET9 is an F-segment four-seater full-size luxury liftback sedan with a length of 5,325 millimetres (209.6 in) and a wheelbase of 3,250 millimetres (128.0 in), which is close to the 3,300-millimetre (129.9 in) maximum wheelbase that third generation Nio battery swap stations can accommodate, and is too long to be incompatible with first and second generation stations. It is the second vehicle to be built on the NT 3.0 platform after the Onvo L60, and uses fully 900 V powertrain components, the first to do so in China. ^[3]

Autonomous driving system

The ET9 has the first implementation of Nio's self-developed 5 nm Shenji NX9031 autonomous driving chip. According to Nio, each of the ET9's two Shenji chips has higher computational ability than the previous 1016 TOP Adam system, which consists of four Nvidia Orin-X chips. ^{[2] [3]} It has a total of 31 sensors in its autonomous driving sensor suite called Aquila 2.0, including 360-degreee camera coverage. ^[5] The ET9 features Nio's first use of 4-dimension mmWave radars, which are capable of measuring elevation in addition to azimuth, range, and velocity like conventional 3-dimension radars. ^[6] It has two side-facing LiDAR units mounted on the front fenders, which have a range of up to 150 metres (490 ft), along with a front-facing roof mounted unit which allows for 350-degree LiDAR coverage. ^[3]

Powertrain

The ET9 is the first vehicle to use Nio's Thunder EDS (electric drive system), which is the first in China to use a mass produced global 900 V electrical architecture, which includes the traction motors, battery, drive power supply electronics, and HVAC system. ^[7] The single powertrain option is a dual-motor all-wheel drive system with a total output of 697 hp (520 kW; 707 PS) and 700 N⋅m (520 lb⋅ft) of torque. It uses a 79kg permanent magnet synchronous motor with W-pin (continuous wave) windings for higher efficiency and smaller dimensions, and runs at 925V to output 340 kW (456 hp; 462 PS) to the rear wheels, for a power density of 4.3kW/kg. It also has a 180 kW (241 hp; 245 PS) AC induction motor powering the front wheels, with a power density of 2.6kW/kg, which Nio claims is the world's highest for the motor type. ^[8] Power is fed to the motors through a 1200V silicon carbide inverter with a power density of 1315kW/L.

The ET9 is powered by a swappable 100 kWh battery with an energy density of 292 Wh/kg using Nio's self-developed 46105 cylindrical format battery cells. ^{[7] [9]} The high pack voltage allows for the battery to be charged by 500–1000 V DC fast chargers at a peak power of 600 kW and a peak current of 772 A, allowing for 5C charging rates. ^[9] The battery can be swapped at a fourth generation Nio swap station in 144 seconds, and provides a CLTC range rating of 650 kilometres (404 mi). ^[9]

References

1. "蔚来ET9-NIO蔚来官网". NIO China. Retrieved 2024-06-18.
2. Zhang, Phate (2024-12-21). "Nio ET9 sedan launched: Price starts at $108,000, deliveries due in Mar 2025". CnEVPost. Retrieved 2024-12-21.
3. Andrews, Mark (2024-12-21). "Nio ET9 launches with prices starting at just 90,450 USD". CarNewsChina.com. Retrieved 2024-12-21.
4. "NIO Day 2023 Held in Xi'an, Smart Electric Executive Flagship ET9 Unveiled" [2023蔚来日在西安举行 智能电动行政旗舰蔚来ET9正式亮相]. NIO China. Retrieved 2024-06-18.
5. Bobylev, Denis (2024-12-21). "Nio Day 2024 live updates: Firefly EV, Nio ET9 and more". CarNewsChina.com. Retrieved 2024-12-21.
6. Han, Zeyu; Wang, Jiahao; Xu, Zikun; Yang, Shuocheng; He, Lei; Xu, Shaobing; Wang, Jianqiang; Li, Keqiang (2024-04-26), 4D Millimeter-Wave Radar in Autonomous Driving: A Survey, doi:10.48550/arXiv.2306.04242 , retrieved 2024-12-21
7. "NIO's executive flagship sedan model ET9 hits market, delivery to begin in March 2025". Gasgoo. Retrieved 2024-12-21.
8. Bobylev, Denis (2024-03-27). "Nio rolls out world's first mass-produced 900V drive system". CarNewsChina.com. Retrieved 2024-12-21.
9. Andrews, Mark (2024-12-21). "Nio ET9 launches with prices starting at just 90,450 USD". CarNewsChina.com. Retrieved 2024-12-21.

External links

• Official website