News / Motoring
Saturday, May 08, 2010
Subaru STELLA Electric Car
Image: © 2010

Subaru's STELLA Electric Starts Production In Japan

GENEVA, SWITZERLAND - At the Geneva Motor Show Press Day in Switzerland (March 2-3, 2010), theirEarth Motoring took this photo of the 2010 Subaru STELLA electric car. Subaru says that the STELLA EV (Electric Vehicle) is built on their popular gasoline (petrol) engine STELLA chassis, which is categorized in the popular mini vehicle car category in Japan. Subaru started selling the STELLA EV electric car in the Japanese market starting in July 2009 and it is currently only marketed in Japan commercially. Subaru says that this mini vehicle car segment accounts for about one third of the domestic car sales in Japan.

Subaru's STELLA electric car is front-wheel drive and is powered by a 47 kW permanent magnet synchronous electric motor producing a maximum output power of 47 kW (64 hp) and a maximum torque of 170 Nm. The Subaru STELLA's electric motor derives power from a high-performance 8-module 346V lithium-ion battery pack, giving the car a full charge driving range of 90 km (about 56 miles). The STELLA's battery pack can be fully charged in 5 hours off of a standard 220V AC home outlet, or in 8 hours when using a 110 V outlet. The battery can also be charged in 15 minutes to 80% capacity using commercial quick-charger systems, undergoing installation in many public areas throughout the world. The charge connector for the lithium-ion battery is located at the front of the vehicle (see photo).

When the driver engages the STELLA's brakes or descends downhill, the the Subaru makes use of a regenerative braking system (reversing the polarity of the electric motor) to capture the car's rolling kinetic energy and charge the lithium-ion battery pack. Subaru says that the regenerative braking system works most efficiently when the driver selects the "low" range on the transmission. Subaru also says they have located all high voltage components of the STELLA's electric powertrain under the floor area to protect occupents in the event of a collision.

The Subaru STELLA comes with 4-channel ABS brakes and has traction control on the front wheels to help maintain vehicle stability in the wet, or on snow/ice. The STELLA's electric motor and transmission are mounted in the front of the vehicle, and the electric powertrain is derived from Subaru's successful R1e electric car developed by Subaru in 2006 along with their commercial partner Tokyo Electric Power Company (TEPCO).

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