Truck power in small Slovenia hub motors
SLOVENIAN company Elaphe introduced its leading in wheel technology to local and international automotive audience at the 2017 Shanghai motor show.
Delivering the keynote address at the ninth Transmission Syposium hosted as part of the motor show, CEO of Elaphe Propulsion Technologies Gorazd Lampi said Elaphe’s in-wheel system is 10% more efficient compared to the latest central electric motor and its inverter.
“Our high torque motors are based on the Elaphe electromagnetic topology, which enables all of the desired properties of an in-wheel electric motor. The core innovation in the electromagnetic part was developed in co-operation with the accomplished Slovene physicist, innovator and philosopher Andrej Detela and is part of a 20-year-old vision that has been brought to life by the Elaphe team.
“We constantly expand the theory and integrate new solutions into our motors.”
Elaphe demonstrated this with a 4×4 fully electric in wheel driven SUV on the show and a video of the SUVs during recent winter testing.
During a presentation on in-wheel technologies, Dr Zhang Zhojun from Shanghai eDrive also presented the many possible applications of in-wheel motor technology.
In Zhojun’s study, even with not too recent data, one of the old Elaphe in-wheel motor designs had the highest specific torque (27,8 Nm/kg).
Based on this independent analysis, Elaphe currently has the leading in-wheel motor technology on the market.
Five hub motors have been developed, serving from cars to trucks, with either air or liquid cooling systems.
The smallest hub motor for cars weighs only 23 kg, but makes 75 kW and 700 Nm, and as the motors are electric, all the power is available from the first revolution.
An air-cooled hub motor suitable for scooters or trike cars weighs 20 kg and makes 20 kW and 225 Nm.
Elaphe competes with the Chinese company Protean, but the Slovenian company said it can jump start a small to medium series production line or provide support to large series equipment manufacturers for high volume production anywhere. Protean is still testing its prototypes.
Future car platforms: A flat battery pack and hubwheels allow for true customisation, as Mitsubishi showed with a modern 1917 model (top).