– General Motors’ next-generation EVs are expected to be powered by a family of five interchangeable drive units and three motors, known collectively as “Ultium Drive.” Ultium Drive will help the company transition its current portfolio to a fully electric lineup, providing significant advantages over GM’s previous EVs in performance, scale, speed to market and manufacturing efficiencies.
Ultium Drive combines electric motors and single-speed transmissions to apply power – generated by Ultium battery cells – to the wheels of GM’s upcoming electric vehicles. GM will lead the design and development of Ultium Drive’s modular architecture.
Ultium Drive will be more responsive than its internal combustion equivalents with precision torque control of its motors for smooth performance. These motors within Ultium Drive are expected to offer industry-leading torque and power density across a wide spectrum of different vehicle types.
“GM has built transmissions for many notable automakers,” said Ken Morris, GM vice president, Autonomous and Electric Vehicle Programs. “Making motors, transmissions, driveline components and systems are among GM’s best-known competencies, and our manufacturing expertise is proving not only transferable but advantageous as we make the transition to EVs.”
GM applied 25 years of EV experience to Ultium Drive with lighter and more efficient designs that feature clever integration. For example, by integrating the power electronics into the drive units’ assemblies, the mass of the power electronics has been reduced by nearly 50 percent from GM’s previous EV generation, saving cost and packaging space while increasing capability by 25 percent.