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Review on Mitsubishi Stylish new hybrid Electric Car Innovative Electric Vehicle (i-MiEV)!
By Amarendra Bhushan for CEOWORLD Magazine Updated:June 5, 2009
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Japan’s carmaker Mitsubishi Motors announced that its heavily anticipated i-MiEV electric car will begin being leased to corporate and government customers in Japan in July.
Mitsubishi Motors Corp would price its i-MiEV electric vehicle at 4.599 million yen ($47,580) when it starts selling the car to fleet customers in Japan next month.
That compares with Fuji Heavy Industries’ electric car which the company said on Thursday would be sold for 4.7 million yen to fleet users in Japan, starting late next month.
Mitsubishi will be among the first large-scale automotive OEMs to sell an EV in more than a decade. Subaru announced it would begin selling the Stella EV in Japan in July at a comparable price as well, though its range is limited to 62 miles.
The all-electric vehicle will have 100 mile range using lithium ion batteries. Fleet sales will start in Japan this July with about 1,400 vehicles slated for leases to corporations and local authorities. Starting in April 2010, Mitsubishi plans to begin leasing the i-MiEV to the public.
The i-MiEV will have an onboard charger so that it can charge into standard outlets in Japan (100 or 200 volt). Charge times to replenish the 16 kWh battery pack will be 7-14 hours, although Mitsubishi is developing fast charging stations that will take just half an hour.
Price of the small four-seat EV will be about 4 million yen, the equivalent today of $41,750, with Japanese government subsidies reducing it to about 3 million yen, or $31,300.
Powered by an advanced lithium-ion battery, the Mitsubishi i-MiEV will be one of the first of the new generation of lithium-ion-powered electric vehicles to be developed by a major automobile manufacturer that will be available to the public. Mitsubishi plans to deliver its i-MiEV to Oregon for fleet testing in late 2009.
Mitsubishi’s stylish four-passenger car – the i-MiEV (Mitsubishi Innovative Electric Vehicle) – when Mitsubishi brought the all-electric vehicle to Portland for a two-day visit as part of its zero-emission vehicle (ZEV) partnership with the state of Oregon and Portland General Electric (PGE).
Mitsubishi also plans to sell the i-MIEV globally – including in the U.S. – beginning in 2010, while Subaru is sticking with the Japanese market and in far more limited numbers: 170 Stella EVs this year versus 1,400 i-MIEVs.
The 1,100 kg (2,425 lb) rear-wheel drive i-MiEV makes maximum use of the long wheelbase that stems from its base model “i” minicar’s rear-midship layout to install a large capacity lithium-ion drive battery under the floor and the power unit under the luggage compartment.
This supports a 160 km (99 mile) cruising range under the Japanese 10-15 mode urban driving cycle—adequate for everyday use without compromising the seating or luggage space of the “i”. (In-house research found via a nationwide survey in Japan that on average, 90% of car drivers cover less than 40 km/day (25 miles) on weekdays and that 80% cover less than 60 km/day (37 miles) at weekends and holidays.
The main powertrain components include:
- A 300V. 16 kWh lithium-ion battery pack manufactured by Lithium Energy Japan, a joint venture between Mitsubishi Motors, GS Yuasa and Mitsubishi Corporation. (Earlier post.) The battery comprises 88 lithium-ion cells connected in series.
- Motor. The i-MiEV uses a high-efficiency compact and lightweight permanent magnet synchronous electric motor specially developed for the vehicle. Maximum output is 47 kW at 3000-6000 rpm, with maximum torque of 180 N·m (133 lb-ft) from 0-2000 rpm. When the vehicle slows down the regenerative brake system causes the motor to operate as a generator. The electrical energy recovered is stored in the drive battery.
- Transmission. The i-MiEV uses a lightweight and compact single-speed reduction gear transmission, exploiting the high low-end torque inherent to the electric motor and eliminating the need for complex gear shifting mechanisms as found in internal combustion engine powered vehicles.
- DC/DC converter. The DC/DC converter is used to charge the 12-volt auxiliary battery and power electrical equipment. It is integrated with the on-board charger in a single unit to reduce size and weight
- Inverter. The i-MiEV’s motor is driven by an alternating current. The inverter converts high-voltage direct current from the drive battery to alternating current and supplies motor with the power required to drive the vehicle.
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