BAIC to Unleash Battery-replaceable EV in China in 2011

Nov 9, 2010
Naoshige Shimizu, Nikkei Electronics
The "C71 EV" battery-replaceable electric vehicle (EV)
The "C71 EV" battery-replaceable electric vehicle (EV)
[Click to enlarge image]
The battery is located in the lower part of the body.
The battery is located in the lower part of the body.
[Click to enlarge image]
The replaceable battery pack
The replaceable battery pack
[Click to enlarge image]

Beijing Automotive Industry Holding Co Ltd (BAIC) exhibited a battery-replaceable electric vehicle (EV) at the 25th World Battery, Hybrid and Fuel Cell Electric Vehicle Symposium and Exhibition (EVS25).

The EV, "C71 EV," is scheduled to be released in China in 2011 at a price of Rmb300,000 (approx US$44,974). The battery of the EV can be replaced in five minutes, according to BAIC.

Currently, the Chinese government is planning to standardize a method of replacing EV batteries and set up stations for replacing batteries. And BAIC developed the C71 EV, considering that battery-replaceable EVs are very promising in China.

This time, BAIC showcased the battery pack equipped in the EV. It was developed by Beijing Pride Power Systems Technology Co Ltd. Its capacity and mass are 22kWh and 340kg, respectively. The positive-electrode material of the battery cell is lithium iron phosphate (LiFePO4). The voltage of the cell is 3.2V, and its current capacity is 60Ah.

The battery pack contains 10 modules, each of which consists of 10 cells. In other words, the EV is equipped with 100 cells.

The C71 EV is a five-seater sedan and can travel 150km per charge. It has a mass of 1,880kg and measures 4,852 (L) x 1,788 (W) x 1,525mm (H). The output and torque of its water-cooled permanent-magnet three-phase synchronous motor are 60kW and 160N·m, respectively. Its maximum speed is 160km/h.