BMW iX4: Advanced 800V Electric Powertrain with 108.7 kWh Battery
Written with artificial intelligence.
The BMW iX4 showcases a sixth-generation electric drivetrain on the Neue Klasse platform, featuring an 800-volt architecture and a 108.7 kWh battery. It boasts a competitive WLTP range of up to 828 km and rapid charging capabilities.
Overview of the BMW iX4
The BMW iX4 introduces a sophisticated electric powertrain integrated into the Neue Klasse platform, highlighting advancements in efficiency and performance. This SUV coupe continues the 800-volt architecture seen in the iX3, while achieving a lower drag coefficient (Cx of 0.23) and a lighter weight.
Battery and Performance Specs
At the heart of the iX4 is a lithium-ion battery with a net capacity of 108.7 kWh and a nominal voltage of around 699 volts. The cylindrical cells are positioned in the vehicle's floor, lowering the center of gravity and enhancing structural rigidity. The iX4 50 xDrive variant is projected to be the best seller, offering a WLTP range of up to 828 km due to its efficient energy consumption of between 15.7 and 19.0 kWh per 100 km.
On highways, energy consumption increases to between 20.0 and 24.1 kWh per 100 km, which remains competitive for a vehicle of this size and weight (approximately 2,305 kg). The iX4 supports DC fast charging at 400 kW, allowing it to charge from 10% to 80% in just 21 minutes, and recover between 296 and 387 km of range in 10 minutes, depending on conditions.
Dual Electric Motors and Dynamic Control
The all-wheel-drive system employs two sixth-generation electric motors. The front motor is an asynchronous unit rated at 123 kW and 255 Nm, while the rear features a synchronous motor with separated excitation (EESM) rated at 240 kW and 435 Nm. Together, these motors produce a combined output of 345 kW (469 hp) and 645 Nm of torque. This design minimizes weight and energy losses by sharing the housing with the power electronics and single-speed reducer.
Dynamic torque management between the front and rear axles allows the system to optimize either efficiency or traction based on driving conditions. The advanced Heart of Joy computer enhances control, coordinating the motors, brakes, and energy recovery for precise and nearly fully regenerative deceleration, only engaging hydraulic brakes during emergency stops or aggressive driving.
Additional Features
The iX4 also includes a Soft Stop feature for smooth braking and bidirectional charging capabilities, enabling Vehicle-to-Load (up to 3.7 kW), Vehicle-to-Home, and Vehicle-to-Grid (up to 11 kW) functionalities. This allows for practical home use and interaction with the electrical grid, enhancing the vehicle's versatility and sustainability.