|Battery and motor packaging in the eRUF. Click to enlarge. Source: CalMotors|
The recently introduced eRUF Porsche-based all-electric sports car is being powered by a UQM PowerPhase 150 electric propulsion system. The eRUF is being developed by RUF Automobile GmbH, a manufacturer of high-performance automobiles and producer of the renowned CTR-series of sports cars.
The eRUF all-electric sports car, designated the eRUF Model A, accelerates from zero to 100 kph in less than seven seconds and has a top speed of 225 kph (140 mph). Estimated range per charge is 250 kilometers to 320 kilometers (155-199 miles), depending on performance level, using a 50.72 kWh lithium-ion iron-phosphate pack from Axeon plc.
The UQM electric propulsion system in the eRUF Model A puts many conventional combustion engines to shame, producing a maximum 650 Nm of torque output which rips into the drive shaft so impressively during acceleration, that one is immediately reminded of the extremely powerful RUF Rt 12.—Alois Ruf Jr., owner and CEO of RUF Automobile GmbH
Ruf engaged CalMotors in Camarillo, California, specialized in the implementation of hybrid-electric and electric-only power train design, to combine the lithium-ion batteries with the motor.
The battery pack consists of 96 160Ah Axeon lithium-ion iron-phosphate cells, each weighing 5.6 kg (12.3 pounds). Total weight of the pack is 550 kg (1,213 lbs). The pack is constantly monitored by an intelligent bus system from Axeon. Each individual cell is coupled with a sensor that sends information on cell temperature and voltage to the central control system. The cells, with a nominal voltage of 3.3 V, have a lifecycle of 3,000 charging cycles.